Correct the key and value encoding for the cache

* WIP redo how we parse and use modes

* test expanding, too

* WIP integrate new Mode/ParsedMode into rest of code

* First pass integrated new mode bits

* fmt

* clippy

* Remove mode we no longer support from test metadata

* Address nits

* Add ability for compiler to opt out if it can't work with some Mode/version

* Elide viaIR input if compiler does not support it

* Improve test output a little; string modes and list ignored tests

* Move Mode to common crate

* constants.mod, and Display for CaseIdx to use it

* fmt

* Rename ModePipeline::E/Y

* Re-arrange Mode things; ParsedMode in format and Mode etc in common

* Move compile check to prepare_tests

* Remove now-unused deps

* clippy nits

* Update fallback tx weights to avoid out of gas errors

* Update kitchensink weights too and fmt

* Bump default geth timeout to 10s

* 30s timeout

* Improve geth stdout logging on failure

* fix line logging

* remove --networkid and arg, back to 5s timeout for geth

Cargo.toml

@@ -8,7 +8,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 license = "MIT/Apache-2.0"
 edition = "2024"
 repository = "https://github.com/paritytech/revive-differential-testing.git"
-rust-version = "1.85.0"
+rust-version = "1.87.0"
 
 [workspace.dependencies]
 revive-dt-common = { version = "0.1.0", path = "crates/common" }
@@ -25,26 +25,33 @@ revive-dt-solc-binaries = { version = "0.1.0", path = "crates/solc-binaries" }
 alloy-primitives = "1.2.1"
 alloy-sol-types = "1.2.1"
 anyhow = "1.0"
+bson = { version = "2.15.0" }
+cacache = { version = "13.1.0" }
 clap = { version = "4", features = ["derive"] }
 foundry-compilers-artifacts = { version = "0.18.0" }
 futures = { version = "0.3.31" }
 hex = "0.4.3"
-reqwest = { version = "0.12.15", features = ["blocking", "json"] }
+regex = "1"
+moka = "0.12.10"
+reqwest = { version = "0.12.15", features = ["json"] }
 once_cell = "1.21"
-rayon = { version = "1.10" }
 semver = { version = "1.0", features = ["serde"] }
 serde = { version = "1.0", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0", default-features = false, features = [
     "arbitrary_precision",
     "std",
+    "unbounded_depth",
 ] }
 sha2 = { version = "0.10.9" }
 sp-core = "36.1.0"
 sp-runtime = "41.1.0"
 temp-dir = { version = "0.1.16" }
 tempfile = "3.3"
-tokio = { version = "1", default-features = false, features = [
+thiserror = "2"
+tokio = { version = "1.47.0", default-features = false, features = [
     "rt-multi-thread",
+    "process",
+    "rt",
 ] }
 uuid = { version = "1.8", features = ["v4"] }
 tracing = "0.1.41"

assets/test_metadata.json

@@ -1,13 +1,24 @@
 {
     "modes": [
         "Y >=0.8.9",
-        "E",
+        "E"
-        "I"
     ],
     "cases": [
         {
             "name": "first",
             "inputs": [
+                {
+                    "address": "0xdeadbeef00000000000000000000000000000042",
+                    "expected_balance": "1233"
+                },
+                {
+                    "address": "0xdeadbeef00000000000000000000000000000042",
+                    "is_storage_empty": true
+                },
+                {
+                    "address": "0xdeadbeef00000000000000000000000000000042",
+                    "is_storage_empty": false
+                },
                 {
                     "instance": "WBTC_1",
                     "method": "#deployer",

crates/common/Cargo.toml

@@ -10,8 +10,8 @@ rust-version.workspace = true
 
 [dependencies]
 anyhow = { workspace = true }
-futures = { workspace = true }
+moka = { workspace = true, features = ["sync"] }
-semver = { workspace = true }
-tracing = { workspace = true }
 once_cell = { workspace = true }
-tokio = { workspace = true }
+semver = { workspace = true }
+serde = { workspace = true }
+tokio = { workspace = true, default-features = false, features = ["time"] }

crates/common/src/cached_fs/mod.rs

@@ -0,0 +1,49 @@
+//! This module implements a cached file system allowing for results to be stored in-memory rather
+//! rather being queried from the file system again.
+
+use std::fs;
+use std::io::{Error, Result};
+use std::path::{Path, PathBuf};
+
+use moka::sync::Cache;
+use once_cell::sync::Lazy;
+
+pub fn read(path: impl AsRef<Path>) -> Result<Vec<u8>> {
+    static READ_CACHE: Lazy<Cache<PathBuf, Vec<u8>>> = Lazy::new(|| Cache::new(10_000));
+
+    let path = path.as_ref().canonicalize()?;
+    match READ_CACHE.get(path.as_path()) {
+        Some(content) => Ok(content),
+        None => {
+            let content = fs::read(path.as_path())?;
+            READ_CACHE.insert(path, content.clone());
+            Ok(content)
+        }
+    }
+}
+
+pub fn read_to_string(path: impl AsRef<Path>) -> Result<String> {
+    let content = read(path)?;
+    String::from_utf8(content).map_err(|_| {
+        Error::new(
+            std::io::ErrorKind::InvalidData,
+            "The contents of the file are not valid UTF8",
+        )
+    })
+}
+
+pub fn read_dir(path: impl AsRef<Path>) -> Result<Box<dyn Iterator<Item = Result<PathBuf>>>> {
+    static READ_DIR_CACHE: Lazy<Cache<PathBuf, Vec<PathBuf>>> = Lazy::new(|| Cache::new(10_000));
+
+    let path = path.as_ref().canonicalize()?;
+    match READ_DIR_CACHE.get(path.as_path()) {
+        Some(entries) => Ok(Box::new(entries.into_iter().map(Ok)) as Box<_>),
+        None => {
+            let entries = fs::read_dir(path.as_path())?
+                .flat_map(|maybe_entry| maybe_entry.map(|entry| entry.path()))
+                .collect();
+            READ_DIR_CACHE.insert(path.clone(), entries);
+            Ok(read_dir(path).unwrap())
+        }
+    }
+}

crates/common/src/concepts/blocking_executor.rs

@@ -1,225 +0,0 @@
-//! The alloy crate __requires__ a tokio runtime.
-//! We contain any async rust right here.
-
-use std::{any::Any, panic::AssertUnwindSafe, pin::Pin, thread};
-
-use futures::FutureExt;
-use once_cell::sync::Lazy;
-use tokio::{
-    runtime::Builder,
-    sync::{mpsc::UnboundedSender, oneshot},
-};
-use tracing::Instrument;
-
-/// A blocking async executor.
-///
-/// This struct exposes the abstraction of a blocking async executor. It is a global and static
-/// executor which means that it doesn't require for new instances of it to be created, it's a
-/// singleton and can be accessed by any thread that wants to perform some async computation on the
-/// blocking executor thread.
-///
-/// The API of the blocking executor is created in a way so that it's very natural, simple to use,
-/// and unbounded to specific tasks or return types. The following is an example of using this
-/// executor to drive an async computation:
-///
-/// ```rust
-/// use revive_dt_common::concepts::*;
-///
-/// fn blocking_function() {
-///     let result = BlockingExecutor::execute(async move {
-///         tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-///         0xFFu8
-///     })
-///     .expect("Computation failed");
-///
-///     assert_eq!(result, 0xFF);
-/// }
-/// ```
-///
-/// Users get to pass in their async tasks without needing to worry about putting them in a [`Box`],
-/// [`Pin`], needing to perform down-casting, or the internal channel mechanism used by the runtime.
-/// To the user, it just looks like a function that converts some async code into sync code.
-///
-/// This struct also handled panics that occur in the passed futures and converts them into errors
-/// that can be handled by the user. This is done to allow the executor to be robust.
-///
-/// Internally, the executor communicates with the tokio runtime thread through channels which carry
-/// the [`TaskMessage`] and the results of the execution.
-pub struct BlockingExecutor;
-
-impl BlockingExecutor {
-    pub fn execute<R>(future: impl Future<Output = R> + Send + 'static) -> Result<R, anyhow::Error>
-    where
-        R: Send + 'static,
-    {
-        // Note: The blocking executor is a singleton and therefore we store its state in a static
-        // so that it's assigned only once. Additionally, when we set the state of the executor we
-        // spawn the thread where the async runtime runs.
-        static STATE: Lazy<ExecutorState> = Lazy::new(|| {
-            tracing::trace!("Initializing the BlockingExecutor state");
-
-            // All communication with the tokio runtime thread happens over mspc channels where the
-            // producers here are the threads that want to run async tasks and the consumer here is
-            // the tokio runtime thread.
-            let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel::<TaskMessage>();
-
-            thread::spawn(move || {
-                tracing::info!(
-                    thread_id = ?std::thread::current().id(),
-                    "Starting async runtime thread"
-                );
-
-                let runtime = Builder::new_current_thread()
-                    .enable_all()
-                    .build()
-                    .expect("Failed to create the async runtime");
-
-                runtime.block_on(async move {
-                    while let Some(TaskMessage {
-                        future: task,
-                        response_tx: response_channel,
-                    }) = rx.recv().await
-                    {
-                        tracing::trace!("Received a new future to execute");
-                        tokio::spawn(async move {
-                            // One of the things that the blocking executor does is that it allows
-                            // us to catch panics if they occur. By wrapping the given future in an
-                            // AssertUnwindSafe::catch_unwind we are able to catch all panic unwinds
-                            // in the given future and convert them into errors.
-                            let task = AssertUnwindSafe(task).catch_unwind();
-
-                            let result = task.await;
-                            let _ = response_channel.send(result);
-                        });
-                    }
-                })
-            });
-
-            ExecutorState { tx }
-        });
-
-        // We need to perform blocking synchronous communication between the current thread and the
-        // tokio runtime thread with the result of the async computation and the oneshot channels
-        // from tokio allows us to do that. The sender side of the channel will be given to the
-        // tokio runtime thread to send the result when the computation is completed and the receive
-        // side of the channel will be kept with this thread to await for the response of the async
-        // task to come back.
-        let (response_tx, response_rx) =
-            oneshot::channel::<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>();
-
-        // The tokio runtime thread expects a Future<Output = Box<dyn Any + Send>> + Send to be
-        // sent to it to execute. However, this function has a typed Future<Output = R> + Send and
-        // therefore we need to change the type of the future to fit what the runtime thread expects
-        // in the task message. In doing this conversion, we lose some of the type information since
-        // we're converting R => dyn Any. However, we will perform down-casting on the result to
-        // convert it back into R.
-        let future = Box::pin(
-            async move { Box::new(future.await) as Box<dyn Any + Send> }.in_current_span(),
-        );
-
-        let task = TaskMessage::new(future, response_tx);
-        if let Err(error) = STATE.tx.send(task) {
-            tracing::error!(?error, "Failed to send the task to the blocking executor");
-            anyhow::bail!("Failed to send the task to the blocking executor: {error:?}")
-        }
-
-        let result = match response_rx.blocking_recv() {
-            Ok(result) => result,
-            Err(error) => {
-                tracing::error!(
-                    ?error,
-                    "Failed to get the response from the blocking executor"
-                );
-                anyhow::bail!("Failed to get the response from the blocking executor: {error:?}")
-            }
-        };
-
-        let result = match result {
-            Ok(result) => result,
-            Err(error) => {
-                tracing::error!(?error, "An error occurred when running the async task");
-                anyhow::bail!("An error occurred when running the async task: {error:?}")
-            }
-        };
-
-        Ok(*result
-            .downcast::<R>()
-            .expect("An error occurred when downcasting into R. This is a bug"))
-    }
-}
-/// Represents the state of the async runtime. This runtime is designed to be a singleton runtime
-/// which means that in the current running program there's just a single thread that has an async
-/// runtime.
-struct ExecutorState {
-    /// The sending side of the task messages channel. This is used by all of the other threads to
-    /// communicate with the async runtime thread.
-    tx: UnboundedSender<TaskMessage>,
-}
-
-/// Represents a message that contains an asynchronous task that's to be executed by the runtime
-/// as well as a way for the runtime to report back on the result of the execution.
-struct TaskMessage {
-    /// The task that's being requested to run. This is a future that returns an object that does
-    /// implement [`Any`] and [`Send`] to allow it to be sent between the requesting thread and the
-    /// async thread.
-    future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
-
-    /// A one shot sender channel where the sender of the task is expecting to hear back on the
-    /// result of the task.
-    response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
-}
-
-impl TaskMessage {
-    pub fn new(
-        future: Pin<Box<dyn Future<Output = Box<dyn Any + Send>> + Send>>,
-        response_tx: oneshot::Sender<Result<Box<dyn Any + Send>, Box<dyn Any + Send>>>,
-    ) -> Self {
-        Self {
-            future,
-            response_tx,
-        }
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use super::*;
-
-    #[test]
-    fn simple_future_works() {
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-            0xFFu8
-        })
-        .unwrap();
-
-        // Assert
-        assert_eq!(result, 0xFFu8);
-    }
-
-    #[test]
-    #[allow(unreachable_code, clippy::unreachable)]
-    fn panics_in_futures_are_caught() {
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            panic!(
-                "If this panic causes, well, a panic, then this is an issue. If it's caught then all good!"
-            );
-            0xFFu8
-        });
-
-        // Assert
-        assert!(result.is_err());
-
-        // Act
-        let result = BlockingExecutor::execute(async move {
-            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
-            0xFFu8
-        })
-        .unwrap();
-
-        // Assert
-        assert_eq!(result, 0xFFu8)
-    }
-}

crates/common/src/concepts/mod.rs

@@ -1,3 +0,0 @@
-mod blocking_executor;
-
-pub use blocking_executor::*;

crates/common/src/fs/clear_dir.rs

@@ -0,0 +1,22 @@
+use std::{
+    fs::{read_dir, remove_dir_all, remove_file},
+    path::Path,
+};
+
+use anyhow::Result;
+
+/// This method clears the passed directory of all of the files and directories contained within
+/// without deleting the directory.
+pub fn clear_directory(path: impl AsRef<Path>) -> Result<()> {
+    for entry in read_dir(path.as_ref())? {
+        let entry = entry?;
+        let entry_path = entry.path();
+
+        if entry_path.is_file() {
+            remove_file(entry_path)?
+        } else {
+            remove_dir_all(entry_path)?
+        }
+    }
+    Ok(())
+}

crates/common/src/fs/mod.rs

@@ -0,0 +1,3 @@
+mod clear_dir;
+
+pub use clear_dir::*;

crates/common/src/futures/mod.rs

@@ -0,0 +1,3 @@
+mod poll;
+
+pub use poll::*;

crates/common/src/futures/poll.rs

@@ -0,0 +1,69 @@
+use std::ops::ControlFlow;
+use std::time::Duration;
+
+use anyhow::{Result, anyhow};
+
+const EXPONENTIAL_BACKOFF_MAX_WAIT_DURATION: Duration = Duration::from_secs(60);
+
+/// A function that polls for a fallible future for some period of time and errors if it fails to
+/// get a result after polling.
+///
+/// Given a future that returns a [`Result<ControlFlow<O, ()>>`], this function calls the future
+/// repeatedly (with some wait period) until the future returns a [`ControlFlow::Break`] or until it
+/// returns an [`Err`] in which case the function stops polling and returns the error.
+///
+/// If the future keeps returning [`ControlFlow::Continue`] and fails to return a [`Break`] within
+/// the permitted polling duration then this function returns an [`Err`]
+///
+/// [`Break`]: ControlFlow::Break
+/// [`Continue`]: ControlFlow::Continue
+pub async fn poll<F, O>(
+    polling_duration: Duration,
+    polling_wait_behavior: PollingWaitBehavior,
+    mut future: impl FnMut() -> F,
+) -> Result<O>
+where
+    F: Future<Output = Result<ControlFlow<O, ()>>>,
+{
+    let mut retries = 0;
+    let mut total_wait_duration = Duration::ZERO;
+    let max_allowed_wait_duration = polling_duration;
+
+    loop {
+        if total_wait_duration >= max_allowed_wait_duration {
+            break Err(anyhow!(
+                "Polling failed after {} retries and a total of {:?} of wait time",
+                retries,
+                total_wait_duration
+            ));
+        }
+
+        match future().await? {
+            ControlFlow::Continue(()) => {
+                let next_wait_duration = match polling_wait_behavior {
+                    PollingWaitBehavior::Constant(duration) => duration,
+                    PollingWaitBehavior::ExponentialBackoff => {
+                        Duration::from_secs(2u64.pow(retries))
+                            .min(EXPONENTIAL_BACKOFF_MAX_WAIT_DURATION)
+                    }
+                };
+                let next_wait_duration =
+                    next_wait_duration.min(max_allowed_wait_duration - total_wait_duration);
+                total_wait_duration += next_wait_duration;
+                retries += 1;
+
+                tokio::time::sleep(next_wait_duration).await;
+            }
+            ControlFlow::Break(output) => {
+                break Ok(output);
+            }
+        }
+    }
+}
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
+pub enum PollingWaitBehavior {
+    Constant(Duration),
+    #[default]
+    ExponentialBackoff,
+}

crates/common/src/iterators/files_with_extension_iterator.rs

@@ -1,4 +1,8 @@
-use std::{borrow::Cow, collections::HashSet, path::PathBuf};
+use std::{
+    borrow::Cow,
+    collections::HashSet,
+    path::{Path, PathBuf},
+};
 
 /// An iterator that finds files of a certain extension in the provided directory. You can think of
 /// this a glob pattern similar to: `${path}/**/*.md`
@@ -15,14 +19,20 @@ pub struct FilesWithExtensionIterator {
     /// this vector then they will be returned when the [`Iterator::next`] method is called. If not
     /// then we visit one of the next directories to visit.
     files_matching_allowed_extensions: Vec<PathBuf>,
+
+    /// This option controls if the the cached file system should be used or not. This could be
+    /// better for certain cases where the entries in the directories do not change and therefore
+    /// caching can be used.
+    use_cached_fs: bool,
 }
 
 impl FilesWithExtensionIterator {
-    pub fn new(root_directory: PathBuf) -> Self {
+    pub fn new(root_directory: impl AsRef<Path>) -> Self {
         Self {
             allowed_extensions: Default::default(),
-            directories_to_search: vec![root_directory],
+            directories_to_search: vec![root_directory.as_ref().to_path_buf()],
             files_matching_allowed_extensions: Default::default(),
+            use_cached_fs: Default::default(),
         }
     }
 
@@ -33,6 +43,11 @@ impl FilesWithExtensionIterator {
         self.allowed_extensions.insert(allowed_extension.into());
         self
     }
+
+    pub fn with_use_cached_fs(mut self, use_cached_fs: bool) -> Self {
+        self.use_cached_fs = use_cached_fs;
+        self
+    }
 }
 
 impl Iterator for FilesWithExtensionIterator {
@@ -45,16 +60,19 @@ impl Iterator for FilesWithExtensionIterator {
 
         let directory_to_search = self.directories_to_search.pop()?;
 
-        // Read all of the entries in the directory. If we failed to read this dir's entires then we
+        let iterator = if self.use_cached_fs {
-        // elect to just ignore it and look in the next directory, we do that by calling the next
+            let Ok(dir_entries) = crate::cached_fs::read_dir(directory_to_search.as_path()) else {
-        // method again on the iterator, which is an intentional decision that we made here instead
+                return self.next();
-        // of panicking.
+            };
-        let Ok(dir_entries) = std::fs::read_dir(directory_to_search) else {
+            Box::new(dir_entries) as Box<dyn Iterator<Item = std::io::Result<PathBuf>>>
-            return self.next();
+        } else {
+            let Ok(dir_entries) = std::fs::read_dir(directory_to_search) else {
+                return self.next();
+            };
+            Box::new(dir_entries.map(|maybe_entry| maybe_entry.map(|entry| entry.path()))) as Box<_>
         };
 
-        for entry in dir_entries.flatten() {
+        for entry_path in iterator.flatten() {
-            let entry_path = entry.path();
             if entry_path.is_dir() {
                 self.directories_to_search.push(entry_path)
             } else if entry_path.is_file()

crates/common/src/lib.rs

@@ -1,7 +1,9 @@
 //! This crate provides common concepts, functionality, types, macros, and more that other crates in
 //! the workspace can benefit from.
 
-pub mod concepts;
+pub mod cached_fs;
+pub mod fs;
+pub mod futures;
 pub mod iterators;
 pub mod macros;
 pub mod types;

crates/common/src/types/mod.rs

@@ -1,3 +1,5 @@
+mod mode;
 mod version_or_requirement;
 
+pub use mode::*;
 pub use version_or_requirement::*;

crates/common/src/types/mode.rs

@@ -0,0 +1,167 @@
+use crate::types::VersionOrRequirement;
+use semver::Version;
+use serde::{Deserialize, Serialize};
+use std::fmt::Display;
+use std::str::FromStr;
+
+/// This represents a mode that a given test should be run with, if possible.
+///
+/// We obtain this by taking a [`ParsedMode`], which may be looser or more strict
+/// in its requirements, and then expanding it out into a list of [`Mode`]s.
+///
+/// Use [`ParsedMode::to_test_modes()`] to do this.
+#[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
+pub struct Mode {
+    pub pipeline: ModePipeline,
+    pub optimize_setting: ModeOptimizerSetting,
+    pub version: Option<semver::VersionReq>,
+}
+
+impl Display for Mode {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.pipeline.fmt(f)?;
+        f.write_str(" ")?;
+        self.optimize_setting.fmt(f)?;
+
+        if let Some(version) = &self.version {
+            f.write_str(" ")?;
+            version.fmt(f)?;
+        }
+
+        Ok(())
+    }
+}
+
+impl Mode {
+    /// Return all of the available mode combinations.
+    pub fn all() -> impl Iterator<Item = Mode> {
+        ModePipeline::test_cases().flat_map(|pipeline| {
+            ModeOptimizerSetting::test_cases().map(move |optimize_setting| Mode {
+                pipeline,
+                optimize_setting,
+                version: None,
+            })
+        })
+    }
+
+    /// Resolves the [`Mode`]'s solidity version requirement into a [`VersionOrRequirement`] if
+    /// the requirement is present on the object. Otherwise, the passed default version is used.
+    pub fn compiler_version_to_use(&self, default: Version) -> VersionOrRequirement {
+        match self.version {
+            Some(ref requirement) => requirement.clone().into(),
+            None => default.into(),
+        }
+    }
+}
+
+/// What do we want the compiler to do?
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
+pub enum ModePipeline {
+    /// Compile Solidity code via Yul IR
+    ViaYulIR,
+    /// Compile Solidity direct to assembly
+    ViaEVMAssembly,
+}
+
+impl FromStr for ModePipeline {
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            // via Yul IR
+            "Y" => Ok(ModePipeline::ViaYulIR),
+            // Don't go via Yul IR
+            "E" => Ok(ModePipeline::ViaEVMAssembly),
+            // Anything else that we see isn't a mode at all
+            _ => Err(anyhow::anyhow!(
+                "Unsupported pipeline '{s}': expected 'Y' or 'E'"
+            )),
+        }
+    }
+}
+
+impl Display for ModePipeline {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ModePipeline::ViaYulIR => f.write_str("Y"),
+            ModePipeline::ViaEVMAssembly => f.write_str("E"),
+        }
+    }
+}
+
+impl ModePipeline {
+    /// Should we go via Yul IR?
+    pub fn via_yul_ir(&self) -> bool {
+        matches!(self, ModePipeline::ViaYulIR)
+    }
+
+    /// An iterator over the available pipelines that we'd like to test,
+    /// when an explicit pipeline was not specified.
+    pub fn test_cases() -> impl Iterator<Item = ModePipeline> + Clone {
+        [ModePipeline::ViaYulIR, ModePipeline::ViaEVMAssembly].into_iter()
+    }
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize, Deserialize)]
+pub enum ModeOptimizerSetting {
+    /// 0 / -: Don't apply any optimizations
+    M0,
+    /// 1: Apply less than default optimizations
+    M1,
+    /// 2: Apply the default optimizations
+    M2,
+    /// 3 / +: Apply aggressive optimizations
+    M3,
+    /// s: Optimize for size
+    Ms,
+    /// z: Aggressively optimize for size
+    Mz,
+}
+
+impl FromStr for ModeOptimizerSetting {
+    type Err = anyhow::Error;
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "M0" => Ok(ModeOptimizerSetting::M0),
+            "M1" => Ok(ModeOptimizerSetting::M1),
+            "M2" => Ok(ModeOptimizerSetting::M2),
+            "M3" => Ok(ModeOptimizerSetting::M3),
+            "Ms" => Ok(ModeOptimizerSetting::Ms),
+            "Mz" => Ok(ModeOptimizerSetting::Mz),
+            _ => Err(anyhow::anyhow!(
+                "Unsupported optimizer setting '{s}': expected 'M0', 'M1', 'M2', 'M3', 'Ms' or 'Mz'"
+            )),
+        }
+    }
+}
+
+impl Display for ModeOptimizerSetting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ModeOptimizerSetting::M0 => f.write_str("M0"),
+            ModeOptimizerSetting::M1 => f.write_str("M1"),
+            ModeOptimizerSetting::M2 => f.write_str("M2"),
+            ModeOptimizerSetting::M3 => f.write_str("M3"),
+            ModeOptimizerSetting::Ms => f.write_str("Ms"),
+            ModeOptimizerSetting::Mz => f.write_str("Mz"),
+        }
+    }
+}
+
+impl ModeOptimizerSetting {
+    /// An iterator over the available optimizer settings that we'd like to test,
+    /// when an explicit optimizer setting was not specified.
+    pub fn test_cases() -> impl Iterator<Item = ModeOptimizerSetting> + Clone {
+        [
+            // No optimizations:
+            ModeOptimizerSetting::M0,
+            // Aggressive optimizations:
+            ModeOptimizerSetting::M3,
+        ]
+        .into_iter()
+    }
+
+    /// Are any optimizations enabled?
+    pub fn optimizations_enabled(&self) -> bool {
+        !matches!(self, ModeOptimizerSetting::M0)
+    }
+}

crates/compiler/Cargo.toml

@@ -23,3 +23,4 @@ semver = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 tracing = { workspace = true }
+tokio = { workspace = true }

crates/compiler/src/constants.rs

@@ -0,0 +1,4 @@
+use semver::Version;
+
+/// This is the first version of solc that supports the `--via-ir` flag / "viaIR" input JSON.
+pub const SOLC_VERSION_SUPPORTING_VIA_YUL_IR: Version = Version::new(0, 8, 13);

crates/compiler/src/lib.rs

@@ -3,9 +3,10 @@
 //! - Polkadot revive resolc compiler
 //! - Polkadot revive Wasm compiler
 
+mod constants;
+
 use std::{
     collections::HashMap,
-    fs::read_to_string,
     hash::Hash,
     path::{Path, PathBuf},
 };
@@ -16,9 +17,13 @@ use semver::Version;
 use serde::{Deserialize, Serialize};
 
 use revive_common::EVMVersion;
+use revive_dt_common::cached_fs::read_to_string;
 use revive_dt_common::types::VersionOrRequirement;
 use revive_dt_config::Arguments;
 
+// Re-export this as it's a part of the compiler interface.
+pub use revive_dt_common::types::{Mode, ModeOptimizerSetting, ModePipeline};
+
 pub mod revive_js;
 pub mod revive_resolc;
 pub mod solc;
@@ -33,28 +38,36 @@ pub trait SolidityCompiler {
         &self,
         input: CompilerInput,
         additional_options: Self::Options,
-    ) -> anyhow::Result<CompilerOutput>;
+    ) -> impl Future<Output = anyhow::Result<CompilerOutput>>;
 
     fn new(solc_executable: PathBuf) -> Self;
 
     fn get_compiler_executable(
         config: &Arguments,
         version: impl Into<VersionOrRequirement>,
-    ) -> anyhow::Result<PathBuf>;
+    ) -> impl Future<Output = anyhow::Result<PathBuf>>;
 
     fn version(&self) -> anyhow::Result<Version>;
+
+    /// Does the compiler support the provided mode and version settings?
+    fn supports_mode(
+        compiler_version: &Version,
+        optimize_setting: ModeOptimizerSetting,
+        pipeline: ModePipeline,
+    ) -> bool;
 }
 
 /// The generic compilation input configuration.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct CompilerInput {
-    pub enable_optimization: Option<bool>,
+    pub pipeline: Option<ModePipeline>,
-    pub via_ir: Option<bool>,
+    pub optimization: Option<ModeOptimizerSetting>,
     pub evm_version: Option<EVMVersion>,
     pub allow_paths: Vec<PathBuf>,
     pub base_path: Option<PathBuf>,
     pub sources: HashMap<PathBuf, String>,
     pub libraries: HashMap<PathBuf, HashMap<String, Address>>,
+    pub revert_string_handling: Option<RevertString>,
 }
 
 /// The generic compilation output configuration.
@@ -84,25 +97,26 @@ where
     pub fn new() -> Self {
         Self {
             input: CompilerInput {
-                enable_optimization: Default::default(),
+                pipeline: Default::default(),
-                via_ir: Default::default(),
+                optimization: Default::default(),
                 evm_version: Default::default(),
                 allow_paths: Default::default(),
                 base_path: Default::default(),
                 sources: Default::default(),
                 libraries: Default::default(),
+                revert_string_handling: Default::default(),
             },
             additional_options: T::Options::default(),
         }
     }
 
-    pub fn with_optimization(mut self, value: impl Into<Option<bool>>) -> Self {
+    pub fn with_optimization(mut self, value: impl Into<Option<ModeOptimizerSetting>>) -> Self {
-        self.input.enable_optimization = value.into();
+        self.input.optimization = value.into();
         self
     }
 
-    pub fn with_via_ir(mut self, value: impl Into<Option<bool>>) -> Self {
+    pub fn with_pipeline(mut self, value: impl Into<Option<ModePipeline>>) -> Self {
-        self.input.via_ir = value.into();
+        self.input.pipeline = value.into();
         self
     }
 
@@ -142,16 +156,49 @@ where
         self
     }
 
+    pub fn with_revert_string_handling(
+        mut self,
+        revert_string_handling: impl Into<Option<RevertString>>,
+    ) -> Self {
+        self.input.revert_string_handling = revert_string_handling.into();
+        self
+    }
+
     pub fn with_additional_options(mut self, options: impl Into<T::Options>) -> Self {
         self.additional_options = options.into();
         self
     }
 
-    pub fn try_build(self, compiler_path: impl AsRef<Path>) -> anyhow::Result<CompilerOutput> {
+    pub fn then(self, callback: impl FnOnce(Self) -> Self) -> Self {
-        T::new(compiler_path.as_ref().to_path_buf()).build(self.input, self.additional_options)
+        callback(self)
+    }
+
+    pub fn try_then<E>(self, callback: impl FnOnce(Self) -> Result<Self, E>) -> Result<Self, E> {
+        callback(self)
+    }
+
+    pub async fn try_build(
+        self,
+        compiler_path: impl AsRef<Path>,
+    ) -> anyhow::Result<CompilerOutput> {
+        T::new(compiler_path.as_ref().to_path_buf())
+            .build(self.input, self.additional_options)
+            .await
     }
 
     pub fn input(&self) -> CompilerInput {
         self.input.clone()
     }
 }
+
+/// Defines how the compiler should handle revert strings.
+#[derive(
+    Clone, Debug, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Serialize, Deserialize,
+)]
+pub enum RevertString {
+    #[default]
+    Default,
+    Debug,
+    Strip,
+    VerboseDebug,
+}

crates/compiler/src/revive_resolc.rs

@@ -6,7 +6,6 @@ use std::{
     process::{Command, Stdio},
 };
 
-use alloy::json_abi::JsonAbi;
 use revive_dt_common::types::VersionOrRequirement;
 use revive_dt_config::Arguments;
 use revive_solc_json_interface::{
@@ -15,10 +14,13 @@ use revive_solc_json_interface::{
     SolcStandardJsonOutput,
 };
 
-use crate::{CompilerInput, CompilerOutput, SolidityCompiler};
+use super::constants::SOLC_VERSION_SUPPORTING_VIA_YUL_IR;
+use crate::{CompilerInput, CompilerOutput, ModeOptimizerSetting, ModePipeline, SolidityCompiler};
 
+use alloy::json_abi::JsonAbi;
 use anyhow::Context;
 use semver::Version;
+use tokio::{io::AsyncWriteExt, process::Command as AsyncCommand};
 
 // TODO: I believe that we need to also pass the solc compiler to resolc so that resolc uses the
 // specified solc compiler. I believe that currently we completely ignore the specified solc binary
@@ -35,20 +37,28 @@ impl SolidityCompiler for Resolc {
     type Options = Vec<String>;
 
     #[tracing::instrument(level = "debug", ret)]
-    fn build(
+    async fn build(
         &self,
         CompilerInput {
-            enable_optimization,
+            pipeline,
-            // Ignored and not honored since this is required for the resolc compilation.
+            optimization,
-            via_ir: _via_ir,
             evm_version,
             allow_paths,
             base_path,
             sources,
             libraries,
+            // TODO: this is currently not being handled since there is no way to pass it into
+            // resolc. So, we need to go back to this later once it's supported.
+            revert_string_handling: _,
         }: CompilerInput,
         additional_options: Self::Options,
     ) -> anyhow::Result<CompilerOutput> {
+        if !matches!(pipeline, None | Some(ModePipeline::ViaYulIR)) {
+            anyhow::bail!(
+                "Resolc only supports the Y (via Yul IR) pipeline, but the provided pipeline is {pipeline:?}"
+            );
+        }
+
         let input = SolcStandardJsonInput {
             language: SolcStandardJsonInputLanguage::Solidity,
             sources: sources
@@ -77,7 +87,9 @@ impl SolidityCompiler for Resolc {
                 output_selection: Some(SolcStandardJsonInputSettingsSelection::new_required()),
                 via_ir: Some(true),
                 optimizer: SolcStandardJsonInputSettingsOptimizer::new(
-                    enable_optimization.unwrap_or(false),
+                    optimization
+                        .unwrap_or(ModeOptimizerSetting::M0)
+                        .optimizations_enabled(),
                     None,
                     &Version::new(0, 0, 0),
                     false,
@@ -87,7 +99,7 @@ impl SolidityCompiler for Resolc {
             },
         };
 
-        let mut command = Command::new(&self.resolc_path);
+        let mut command = AsyncCommand::new(&self.resolc_path);
         command
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
@@ -109,9 +121,10 @@ impl SolidityCompiler for Resolc {
         let mut child = command.spawn()?;
 
         let stdin_pipe = child.stdin.as_mut().expect("stdin must be piped");
-        serde_json::to_writer(stdin_pipe, &input)?;
+        let serialized_input = serde_json::to_vec(&input)?;
+        stdin_pipe.write_all(&serialized_input).await?;
 
-        let output = child.wait_with_output()?;
+        let output = child.wait_with_output().await?;
         let stdout = output.stdout;
         let stderr = output.stderr;
 
@@ -195,7 +208,7 @@ impl SolidityCompiler for Resolc {
         Resolc { resolc_path }
     }
 
-    fn get_compiler_executable(
+    async fn get_compiler_executable(
         config: &Arguments,
         _version: impl Into<VersionOrRequirement>,
     ) -> anyhow::Result<PathBuf> {
@@ -227,17 +240,31 @@ impl SolidityCompiler for Resolc {
 
         Version::parse(version_string).map_err(Into::into)
     }
+
+    fn supports_mode(
+        compiler_version: &Version,
+        _optimize_setting: ModeOptimizerSetting,
+        pipeline: ModePipeline,
+    ) -> bool {
+        // We only support the Y (IE compile via Yul IR) mode here, which also means that we can
+        // only use solc version 0.8.13 and above. We must always compile via Yul IR as resolc
+        // needs this to translate to LLVM IR and then RISCV.
+        pipeline == ModePipeline::ViaYulIR
+            && compiler_version >= &SOLC_VERSION_SUPPORTING_VIA_YUL_IR
+    }
 }
 
 #[cfg(test)]
 mod test {
     use super::*;
 
-    #[test]
+    #[tokio::test]
-    fn compiler_version_can_be_obtained() {
+    async fn compiler_version_can_be_obtained() {
         // Arrange
         let args = Arguments::default();
-        let path = Resolc::get_compiler_executable(&args, Version::new(0, 7, 6)).unwrap();
+        let path = Resolc::get_compiler_executable(&args, Version::new(0, 7, 6))
+            .await
+            .unwrap();
         let compiler = Resolc::new(path);
 
         // Act

crates/compiler/src/solc.rs

@@ -10,7 +10,8 @@ use revive_dt_common::types::VersionOrRequirement;
 use revive_dt_config::Arguments;
 use revive_dt_solc_binaries::download_solc;
 
-use crate::{CompilerInput, CompilerOutput, SolidityCompiler};
+use super::constants::SOLC_VERSION_SUPPORTING_VIA_YUL_IR;
+use crate::{CompilerInput, CompilerOutput, ModeOptimizerSetting, ModePipeline, SolidityCompiler};
 
 use anyhow::Context;
 use foundry_compilers_artifacts::{
@@ -21,6 +22,7 @@ use foundry_compilers_artifacts::{
     solc::*,
 };
 use semver::Version;
+use tokio::{io::AsyncWriteExt, process::Command as AsyncCommand};
 
 #[derive(Debug)]
 pub struct Solc {
@@ -31,19 +33,31 @@ impl SolidityCompiler for Solc {
     type Options = ();
 
     #[tracing::instrument(level = "debug", ret)]
-    fn build(
+    async fn build(
         &self,
         CompilerInput {
-            enable_optimization,
+            pipeline,
-            via_ir,
+            optimization,
             evm_version,
             allow_paths,
             base_path,
             sources,
             libraries,
+            revert_string_handling,
         }: CompilerInput,
         _: Self::Options,
     ) -> anyhow::Result<CompilerOutput> {
+        let compiler_supports_via_ir = self.version()? >= SOLC_VERSION_SUPPORTING_VIA_YUL_IR;
+
+        // Be careful to entirely omit the viaIR field if the compiler does not support it,
+        // as it will error if you provide fields it does not know about. Because
+        // `supports_mode` is called prior to instantiating a compiler, we should never
+        // ask for something which is invalid.
+        let via_ir = match (pipeline, compiler_supports_via_ir) {
+            (pipeline, true) => pipeline.map(|p| p.via_yul_ir()),
+            (_pipeline, false) => None,
+        };
+
         let input = SolcInput {
             language: SolcLanguage::Solidity,
             sources: Sources(
@@ -54,7 +68,7 @@ impl SolidityCompiler for Solc {
             ),
             settings: Settings {
                 optimizer: Optimizer {
-                    enabled: enable_optimization,
+                    enabled: optimization.map(|o| o.optimizations_enabled()),
                     details: Some(Default::default()),
                     ..Default::default()
                 },
@@ -86,11 +100,20 @@ impl SolidityCompiler for Solc {
                         })
                         .collect(),
                 },
+                debug: revert_string_handling.map(|revert_string_handling| DebuggingSettings {
+                    revert_strings: match revert_string_handling {
+                        crate::RevertString::Default => Some(RevertStrings::Default),
+                        crate::RevertString::Debug => Some(RevertStrings::Debug),
+                        crate::RevertString::Strip => Some(RevertStrings::Strip),
+                        crate::RevertString::VerboseDebug => Some(RevertStrings::VerboseDebug),
+                    },
+                    debug_info: Default::default(),
+                }),
                 ..Default::default()
             },
         };
 
-        let mut command = Command::new(&self.solc_path);
+        let mut command = AsyncCommand::new(&self.solc_path);
         command
             .stdin(Stdio::piped())
             .stdout(Stdio::piped())
@@ -112,8 +135,9 @@ impl SolidityCompiler for Solc {
         let mut child = command.spawn()?;
 
         let stdin = child.stdin.as_mut().expect("should be piped");
-        serde_json::to_writer(stdin, &input)?;
+        let serialized_input = serde_json::to_vec(&input)?;
-        let output = child.wait_with_output()?;
+        stdin.write_all(&serialized_input).await?;
+        let output = child.wait_with_output().await?;
 
         if !output.status.success() {
             let json_in = serde_json::to_string_pretty(&input)?;
@@ -177,11 +201,11 @@ impl SolidityCompiler for Solc {
         Self { solc_path }
     }
 
-    fn get_compiler_executable(
+    async fn get_compiler_executable(
         config: &Arguments,
         version: impl Into<VersionOrRequirement>,
     ) -> anyhow::Result<PathBuf> {
-        let path = download_solc(config.directory(), version, config.wasm)?;
+        let path = download_solc(config.directory(), version, config.wasm).await?;
         Ok(path)
     }
 
@@ -210,17 +234,33 @@ impl SolidityCompiler for Solc {
 
         Version::parse(version_string).map_err(Into::into)
     }
+
+    fn supports_mode(
+        compiler_version: &Version,
+        _optimize_setting: ModeOptimizerSetting,
+        pipeline: ModePipeline,
+    ) -> bool {
+        // solc 0.8.13 and above supports --via-ir, and less than that does not. Thus, we support mode E
+        // (ie no Yul IR) in either case, but only support Y (via Yul IR) if the compiler is new enough.
+        pipeline == ModePipeline::ViaEVMAssembly
+            || (pipeline == ModePipeline::ViaYulIR
+                && compiler_version >= &SOLC_VERSION_SUPPORTING_VIA_YUL_IR)
+    }
 }
 
 #[cfg(test)]
 mod test {
     use super::*;
 
-    #[test]
+    #[tokio::test]
-    fn compiler_version_can_be_obtained() {
+    async fn compiler_version_can_be_obtained() {
         // Arrange
         let args = Arguments::default();
-        let path = Solc::get_compiler_executable(&args, Version::new(0, 7, 6)).unwrap();
+        println!("Getting compiler path");
+        let path = Solc::get_compiler_executable(&args, Version::new(0, 7, 6))
+            .await
+            .unwrap();
+        println!("Got compiler path");
         let compiler = Solc::new(path);
 
         // Act
@@ -232,4 +272,25 @@ mod test {
             Version::new(0, 7, 6)
         )
     }
+
+    #[tokio::test]
+    async fn compiler_version_can_be_obtained1() {
+        // Arrange
+        let args = Arguments::default();
+        println!("Getting compiler path");
+        let path = Solc::get_compiler_executable(&args, Version::new(0, 4, 21))
+            .await
+            .unwrap();
+        println!("Got compiler path");
+        let compiler = Solc::new(path);
+
+        // Act
+        let version = compiler.version();
+
+        // Assert
+        assert_eq!(
+            version.expect("Failed to get version"),
+            Version::new(0, 4, 21)
+        )
+    }
 }

crates/compiler/tests/lib.rs

@@ -4,11 +4,14 @@ use revive_dt_compiler::{Compiler, SolidityCompiler, revive_resolc::Resolc, solc
 use revive_dt_config::Arguments;
 use semver::Version;
 
-#[test]
+#[tokio::test]
-fn contracts_can_be_compiled_with_solc() {
+async fn contracts_can_be_compiled_with_solc() {
     // Arrange
     let args = Arguments::default();
-    let compiler_path = Solc::get_compiler_executable(&args, Version::new(0, 8, 30)).unwrap();
+    let compiler_path = Solc::get_compiler_executable(&args, Version::new(0, 8, 30))
+        .await
+        .unwrap();
+    println!("About to assert");
 
     // Act
     let output = Compiler::<Solc>::new()
@@ -16,7 +19,8 @@ fn contracts_can_be_compiled_with_solc() {
         .unwrap()
         .with_source("./tests/assets/array_one_element/main.sol")
         .unwrap()
-        .try_build(compiler_path);
+        .try_build(compiler_path)
+        .await;
 
     // Assert
     let output = output.expect("Failed to compile");
@@ -42,11 +46,13 @@ fn contracts_can_be_compiled_with_solc() {
     assert!(callable_file_contracts.contains_key("Callable"));
 }
 
-#[test]
+#[tokio::test]
-fn contracts_can_be_compiled_with_resolc() {
+async fn contracts_can_be_compiled_with_resolc() {
     // Arrange
     let args = Arguments::default();
-    let compiler_path = Resolc::get_compiler_executable(&args, Version::new(0, 8, 30)).unwrap();
+    let compiler_path = Resolc::get_compiler_executable(&args, Version::new(0, 8, 30))
+        .await
+        .unwrap();
 
     // Act
     let output = Compiler::<Resolc>::new()
@@ -54,7 +60,8 @@ fn contracts_can_be_compiled_with_resolc() {
         .unwrap()
         .with_source("./tests/assets/array_one_element/main.sol")
         .unwrap()
-        .try_build(compiler_path);
+        .try_build(compiler_path)
+        .await;
 
     // Assert
     let output = output.expect("Failed to compile");

crates/config/src/lib.rs

@@ -58,10 +58,6 @@ pub struct Arguments {
     #[arg(long = "geth-start-timeout", default_value = "5000")]
     pub geth_start_timeout: u64,
 
-    /// The test network chain ID.
-    #[arg(short, long = "network-id", default_value = "420420420")]
-    pub network_id: u64,
-
     /// Configure nodes according to this genesis.json file.
     #[arg(long = "genesis", default_value = "genesis.json")]
     pub genesis_file: PathBuf,
@@ -77,7 +73,7 @@ pub struct Arguments {
     /// This argument controls which private keys the nodes should have access to and be added to
     /// its wallet signers. With a value of N, private keys (0, N] will be added to the signer set
     /// of the node.
-    #[arg(long = "private-keys-count", default_value_t = 30)]
+    #[arg(long = "private-keys-count", default_value_t = 100_000)]
     pub private_keys_to_add: usize,
 
     /// The differential testing leader node implementation.
@@ -92,9 +88,22 @@ pub struct Arguments {
     #[arg(long = "compile-only")]
     pub compile_only: Option<TestingPlatform>,
 
-    /// Determines the amount of tests that are executed in parallel.
+    /// Determines the amount of nodes that will be spawned for each chain.
-    #[arg(long = "workers", default_value = "12")]
+    #[arg(long, default_value = "1")]
-    pub workers: usize,
+    pub number_of_nodes: usize,
+
+    /// Determines the amount of tokio worker threads that will will be used.
+    #[arg(
+        long,
+        default_value_t = std::thread::available_parallelism()
+            .map(|n| n.get())
+            .unwrap_or(1)
+    )]
+    pub number_of_threads: usize,
+
+    /// Determines the amount of concurrent tasks that will be spawned to run tests. Defaults to 10 x the number of nodes.
+    #[arg(long)]
+    pub number_concurrent_tasks: Option<usize>,
 
     /// Extract problems back to the test corpus.
     #[arg(short, long = "extract-problems")]
@@ -111,6 +120,10 @@ pub struct Arguments {
     /// By default it uses `eth-rpc` binary found in `$PATH`.
     #[arg(short = 'p', long = "eth_proxy", default_value = "eth-rpc")]
     pub eth_proxy: PathBuf,
+
+    /// Controls if the compilation cache should be invalidated or not.
+    #[arg(short, long)]
+    pub invalidate_compilation_cache: bool,
 }
 
 impl Arguments {
@@ -130,6 +143,13 @@ impl Arguments {
         panic!("should have a workdir configured")
     }
 
+    /// Return the number of concurrent tasks to run. This is provided via the
+    /// `--number-concurrent-tasks` argument, and otherwise defaults to --number-of-nodes * 20.
+    pub fn number_of_concurrent_tasks(&self) -> usize {
+        self.number_concurrent_tasks
+            .unwrap_or(20 * self.number_of_nodes)
+    }
+
     /// Try to parse `self.account` into a [PrivateKeySigner],
     /// panicing on error.
     pub fn wallet(&self) -> EthereumWallet {
@@ -159,7 +179,9 @@ impl Default for Arguments {
 /// The Solidity compatible node implementation.
 ///
 /// This describes the solutions to be tested against on a high level.
-#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, ValueEnum, Serialize, Deserialize)]
+#[derive(
+    Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, ValueEnum, Serialize, Deserialize,
+)]
 #[clap(rename_all = "lower")]
 pub enum TestingPlatform {
     /// The go-ethereum reference full node EVM implementation.

crates/core/Cargo.toml

@@ -23,10 +23,17 @@ revive-dt-report = { workspace = true }
 
 alloy = { workspace = true }
 anyhow = { workspace = true }
+bson = { workspace = true }
+cacache = { workspace = true }
 clap = { workspace = true }
+futures = { workspace = true }
 indexmap = { workspace = true }
+once_cell = { workspace = true }
+tokio = { workspace = true }
 tracing = { workspace = true }
 tracing-subscriber = { workspace = true }
-rayon = { workspace = true }
 semver = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
 temp-dir = { workspace = true }
+tempfile = { workspace = true }

crates/core/src/cached_compiler.rs

@@ -0,0 +1,261 @@
+//! A wrapper around the compiler which allows for caching of compilation artifacts so that they can
+//! be reused between runs.
+
+use std::{
+    collections::HashMap,
+    path::{Path, PathBuf},
+    sync::Arc,
+};
+
+use futures::FutureExt;
+use revive_dt_common::iterators::FilesWithExtensionIterator;
+use revive_dt_compiler::{Compiler, CompilerOutput, Mode, SolidityCompiler};
+use revive_dt_config::Arguments;
+use revive_dt_format::metadata::{ContractIdent, ContractInstance, Metadata};
+
+use alloy::{hex::ToHexExt, json_abi::JsonAbi, primitives::Address};
+use anyhow::{Error, Result};
+use once_cell::sync::Lazy;
+use semver::Version;
+use serde::{Deserialize, Serialize};
+use tokio::sync::{Mutex, RwLock};
+use tracing::{Instrument, debug, debug_span, instrument};
+
+use crate::Platform;
+
+pub struct CachedCompiler(ArtifactsCache);
+
+impl CachedCompiler {
+    pub async fn new(path: impl AsRef<Path>, invalidate_cache: bool) -> Result<Self> {
+        let mut cache = ArtifactsCache::new(path);
+        if invalidate_cache {
+            cache = cache.with_invalidated_cache().await?;
+        }
+        Ok(Self(cache))
+    }
+
+    /// Compiles or gets the compilation artifacts from the cache.
+    #[instrument(
+        level = "debug",
+        skip_all,
+        fields(
+            metadata_file_path = %metadata_file_path.as_ref().display(),
+            %mode,
+            platform = P::config_id().to_string()
+        ),
+        err
+    )]
+    pub async fn compile_contracts<P: Platform>(
+        &self,
+        metadata: &Metadata,
+        metadata_file_path: impl AsRef<Path>,
+        mode: &Mode,
+        config: &Arguments,
+        deployed_libraries: Option<&HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>>,
+    ) -> Result<(CompilerOutput, Version)> {
+        static CACHE_KEY_LOCK: Lazy<RwLock<HashMap<CacheKey, Arc<Mutex<()>>>>> =
+            Lazy::new(Default::default);
+
+        let compiler_version_or_requirement = mode.compiler_version_to_use(config.solc.clone());
+        let compiler_path = <P::Compiler as SolidityCompiler>::get_compiler_executable(
+            config,
+            compiler_version_or_requirement,
+        )
+        .await?;
+        let compiler_version =
+            <P::Compiler as SolidityCompiler>::new(compiler_path.clone()).version()?;
+
+        let cache_key = CacheKey {
+            platform_key: P::config_id().to_string(),
+            compiler_version: compiler_version.clone(),
+            metadata_file_path: metadata_file_path.as_ref().to_path_buf(),
+            solc_mode: mode.clone(),
+        };
+
+        let compilation_callback = || {
+            async move {
+                compile_contracts::<P>(
+                    metadata.directory()?,
+                    compiler_path,
+                    metadata.files_to_compile()?,
+                    mode,
+                    deployed_libraries,
+                )
+                .map(|compilation_result| compilation_result.map(CacheValue::new))
+                .await
+            }
+            .instrument(debug_span!(
+                "Running compilation for the cache key",
+                cache_key.platform_key = %cache_key.platform_key,
+                cache_key.compiler_version = %cache_key.compiler_version,
+                cache_key.metadata_file_path = %cache_key.metadata_file_path.display(),
+                cache_key.solc_mode = %cache_key.solc_mode,
+            ))
+        };
+
+        let compiled_contracts = match deployed_libraries {
+            // If deployed libraries have been specified then we will re-compile the contract as it
+            // means that linking is required in this case.
+            Some(_) => {
+                debug!("Deployed libraries defined, recompilation must take place");
+                debug!("Cache miss");
+                compilation_callback().await?.compiler_output
+            }
+            // If no deployed libraries are specified then we can follow the cached flow and attempt
+            // to lookup the compilation artifacts in the cache.
+            None => {
+                debug!("Deployed libraries undefined, attempting to make use of cache");
+
+                // Lock this specific cache key such that we do not get inconsistent state. We want
+                // that when multiple cases come in asking for the compilation artifacts then they
+                // don't all trigger a compilation if there's a cache miss. Hence, the lock here.
+                let read_guard = CACHE_KEY_LOCK.read().await;
+                let mutex = match read_guard.get(&cache_key).cloned() {
+                    Some(value) => value,
+                    None => {
+                        drop(read_guard);
+                        CACHE_KEY_LOCK
+                            .write()
+                            .await
+                            .entry(cache_key.clone())
+                            .or_default()
+                            .clone()
+                    }
+                };
+                let _guard = mutex.lock().await;
+
+                self.0
+                    .get_or_insert_with(&cache_key, compilation_callback)
+                    .await
+                    .map(|value| value.compiler_output)?
+            }
+        };
+
+        Ok((compiled_contracts, compiler_version))
+    }
+}
+
+async fn compile_contracts<P: Platform>(
+    metadata_directory: impl AsRef<Path>,
+    compiler_path: impl AsRef<Path>,
+    mut files_to_compile: impl Iterator<Item = PathBuf>,
+    mode: &Mode,
+    deployed_libraries: Option<&HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>>,
+) -> Result<CompilerOutput> {
+    let all_sources_in_dir = FilesWithExtensionIterator::new(metadata_directory.as_ref())
+        .with_allowed_extension("sol")
+        .with_use_cached_fs(true)
+        .collect::<Vec<_>>();
+
+    Compiler::<P::Compiler>::new()
+        .with_allow_path(metadata_directory)
+        // Handling the modes
+        .with_optimization(mode.optimize_setting)
+        .with_pipeline(mode.pipeline)
+        // Adding the contract sources to the compiler.
+        .try_then(|compiler| {
+            files_to_compile.try_fold(compiler, |compiler, path| compiler.with_source(path))
+        })?
+        // Adding the deployed libraries to the compiler.
+        .then(|compiler| {
+            deployed_libraries
+                .iter()
+                .flat_map(|value| value.iter())
+                .map(|(instance, (ident, address, abi))| (instance, ident, address, abi))
+                .flat_map(|(_, ident, address, _)| {
+                    all_sources_in_dir
+                        .iter()
+                        .map(move |path| (ident, address, path))
+                })
+                .fold(compiler, |compiler, (ident, address, path)| {
+                    compiler.with_library(path, ident.as_str(), *address)
+                })
+        })
+        .try_build(compiler_path)
+        .await
+}
+
+struct ArtifactsCache {
+    path: PathBuf,
+}
+
+impl ArtifactsCache {
+    pub fn new(path: impl AsRef<Path>) -> Self {
+        Self {
+            path: path.as_ref().to_path_buf(),
+        }
+    }
+
+    #[instrument(level = "debug", skip_all, err)]
+    pub async fn with_invalidated_cache(self) -> Result<Self> {
+        cacache::clear(self.path.as_path())
+            .await
+            .map_err(Into::<Error>::into)?;
+        Ok(self)
+    }
+
+    #[instrument(level = "debug", skip_all, err)]
+    pub async fn insert(&self, key: &CacheKey, value: &CacheValue) -> Result<()> {
+        let key = bson::to_vec(key)?;
+        let value = bson::to_vec(value)?;
+        cacache::write(self.path.as_path(), key.encode_hex(), value).await?;
+        Ok(())
+    }
+
+    pub async fn get(&self, key: &CacheKey) -> Option<CacheValue> {
+        let key = bson::to_vec(key).ok()?;
+        let value = cacache::read(self.path.as_path(), key.encode_hex())
+            .await
+            .ok()?;
+        let value = bson::from_slice::<CacheValue>(&value).ok()?;
+        Some(value)
+    }
+
+    #[instrument(level = "debug", skip_all, err)]
+    pub async fn get_or_insert_with(
+        &self,
+        key: &CacheKey,
+        callback: impl AsyncFnOnce() -> Result<CacheValue>,
+    ) -> Result<CacheValue> {
+        match self.get(key).await {
+            Some(value) => {
+                debug!("Cache hit");
+                Ok(value)
+            }
+            None => {
+                debug!("Cache miss");
+                let value = callback().await?;
+                self.insert(key, &value).await?;
+                Ok(value)
+            }
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
+struct CacheKey {
+    /// The platform name that this artifact was compiled for. For example, this could be EVM or
+    /// PVM.
+    platform_key: String,
+
+    /// The version of the compiler that was used to compile the artifacts.
+    compiler_version: Version,
+
+    /// The path of the metadata file that the compilation artifacts are for.
+    metadata_file_path: PathBuf,
+
+    /// The mode that the compilation artifacts where compiled with.
+    solc_mode: Mode,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+struct CacheValue {
+    /// The compiler output from the compilation run.
+    compiler_output: CompilerOutput,
+}
+
+impl CacheValue {
+    pub fn new(compiler_output: CompilerOutput) -> Self {
+        Self { compiler_output }
+    }
+}

crates/core/src/lib.rs

@@ -26,7 +26,7 @@ pub trait Platform {
 pub struct Geth;
 
 impl Platform for Geth {
-    type Blockchain = geth::Instance;
+    type Blockchain = geth::GethNode;
     type Compiler = solc::Solc;
 
     fn config_id() -> TestingPlatform {

crates/core/src/main.rs

@@ -1,37 +1,80 @@
-use std::{collections::HashMap, sync::LazyLock};
+mod cached_compiler;
 
+use std::{
+    collections::HashMap,
+    path::{Path, PathBuf},
+    sync::{Arc, LazyLock},
+    time::Instant,
+};
+
+use alloy::{
+    network::{Ethereum, TransactionBuilder},
+    rpc::types::TransactionRequest,
+};
+use anyhow::Context;
 use clap::Parser;
-use rayon::{ThreadPoolBuilder, prelude::*};
+use futures::stream::futures_unordered::FuturesUnordered;
+use futures::{Stream, StreamExt};
+use revive_dt_node_interaction::EthereumNode;
+use temp_dir::TempDir;
+use tokio::sync::mpsc;
+use tracing::{Instrument, Level};
+use tracing_subscriber::{EnvFilter, FmtSubscriber};
 
+use revive_dt_common::types::Mode;
+use revive_dt_compiler::SolidityCompiler;
 use revive_dt_config::*;
 use revive_dt_core::{
     Geth, Kitchensink, Platform,
-    driver::{Driver, State},
+    driver::{CaseDriver, CaseState},
+};
+use revive_dt_format::{
+    case::{Case, CaseIdx},
+    corpus::Corpus,
+    input::{Input, Step},
+    metadata::{ContractPathAndIdent, Metadata, MetadataFile},
 };
-use revive_dt_format::{corpus::Corpus, metadata::MetadataFile};
 use revive_dt_node::pool::NodePool;
 use revive_dt_report::reporter::{Report, Span};
-use temp_dir::TempDir;
+
-use tracing::Level;
+use crate::cached_compiler::CachedCompiler;
-use tracing_subscriber::{EnvFilter, FmtSubscriber};
 
 static TEMP_DIR: LazyLock<TempDir> = LazyLock::new(|| TempDir::new().unwrap());
 
+/// this represents a single "test"; a mode, path and collection of cases.
+#[derive(Clone)]
+struct Test {
+    metadata: Metadata,
+    path: PathBuf,
+    mode: Mode,
+    case_idx: CaseIdx,
+    case: Case,
+}
+
+/// This represents the results that we gather from running test cases.
+type CaseResult = Result<usize, anyhow::Error>;
+
 fn main() -> anyhow::Result<()> {
     let args = init_cli()?;
 
-    for (corpus, tests) in collect_corpora(&args)? {
+    let body = async {
-        let span = Span::new(corpus, args.clone())?;
+        for (corpus, tests) in collect_corpora(&args)? {
-
+            let span = Span::new(corpus, args.clone())?;
-        match &args.compile_only {
+            match &args.compile_only {
-            Some(platform) => compile_corpus(&args, &tests, platform, span),
+                Some(platform) => compile_corpus(&args, &tests, platform, span).await,
-            None => execute_corpus(&args, &tests, span)?,
+                None => execute_corpus(&args, &tests, span).await?,
+            }
+            Report::save()?;
         }
+        Ok(())
+    };
 
-        Report::save()?;
+    tokio::runtime::Builder::new_multi_thread()
-    }
+        .worker_threads(args.number_of_threads)
-
+        .enable_all()
-    Ok(())
+        .build()
+        .expect("Failed building the Runtime")
+        .block_on(body)
 }
 
 fn init_cli() -> anyhow::Result<Arguments> {
@@ -62,10 +105,6 @@ fn init_cli() -> anyhow::Result<Arguments> {
     }
     tracing::info!("workdir: {}", args.directory().display());
 
-    ThreadPoolBuilder::new()
-        .num_threads(args.workers)
-        .build_global()?;
-
     Ok(args)
 }
 
@@ -83,71 +122,505 @@ fn collect_corpora(args: &Arguments) -> anyhow::Result<HashMap<Corpus, Vec<Metad
     Ok(corpora)
 }
 
-fn run_driver<L, F>(args: &Arguments, tests: &[MetadataFile], span: Span) -> anyhow::Result<()>
+async fn run_driver<L, F>(
+    args: &Arguments,
+    metadata_files: &[MetadataFile],
+    span: Span,
+) -> anyhow::Result<()>
 where
     L: Platform,
     F: Platform,
     L::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
     F::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
 {
-    let leader_nodes = NodePool::<L::Blockchain>::new(args)?;
+    let (report_tx, report_rx) = mpsc::unbounded_channel::<(Test, CaseResult)>();
-    let follower_nodes = NodePool::<F::Blockchain>::new(args)?;
 
-    tests.par_iter().for_each(
+    let tests = prepare_tests::<L, F>(args, metadata_files);
-        |MetadataFile {
+    let driver_task = start_driver_task::<L, F>(args, tests, span, report_tx).await?;
-             content: metadata,
+    let status_reporter_task = start_reporter_task(report_rx);
-             path: metadata_file_path,
-         }| {
-            // Starting a new tracing span for this metadata file. This allows our logs to be clear
-            // about which metadata file the logs belong to. We can add other information into this
-            // as well to be able to associate the logs with the correct metadata file and case
-            // that's being executed.
-            let tracing_span = tracing::span!(
-                Level::INFO,
-                "Running driver",
-                metadata_file_path = metadata_file_path.display().to_string(),
-            );
-            let _guard = tracing_span.enter();
 
-            let mut driver = Driver::<L, F>::new(
+    tokio::join!(status_reporter_task, driver_task);
-                metadata,
-                args,
-                leader_nodes.round_robbin(),
-                follower_nodes.round_robbin(),
-            );
-
-            let execution_result = driver.execute(span);
-            tracing::info!(
-                case_success_count = execution_result.successful_cases_count,
-                case_failure_count = execution_result.failed_cases_count,
-                "Execution completed"
-            );
-
-            let mut error_count = 0;
-            for result in execution_result.results.iter() {
-                if !result.is_success() {
-                    tracing::error!(execution_error = ?result, "Encountered an error");
-                    error_count += 1;
-                }
-            }
-            if error_count == 0 {
-                tracing::info!("Execution succeeded");
-            } else {
-                tracing::info!("Execution failed");
-            }
-        },
-    );
 
     Ok(())
 }
 
-fn execute_corpus(args: &Arguments, tests: &[MetadataFile], span: Span) -> anyhow::Result<()> {
+fn prepare_tests<L, F>(
+    args: &Arguments,
+    metadata_files: &[MetadataFile],
+) -> impl Stream<Item = Test>
+where
+    L: Platform,
+    F: Platform,
+    L::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+    F::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+{
+    metadata_files
+        .iter()
+        .flat_map(
+            |MetadataFile {
+                 path,
+                 content: metadata,
+             }| {
+                metadata
+                    .cases
+                    .iter()
+                    .enumerate()
+                    .flat_map(move |(case_idx, case)| {
+                        metadata
+                            .solc_modes()
+                            .into_iter()
+                            .map(move |solc_mode| (path, metadata, case_idx, case, solc_mode))
+                    })
+            },
+        )
+        .filter(
+            |(metadata_file_path, metadata, _, _, _)| match metadata.ignore {
+                Some(true) => {
+                    tracing::warn!(
+                        metadata_file_path = %metadata_file_path.display(),
+                        "Ignoring metadata file"
+                    );
+                    false
+                }
+                Some(false) | None => true,
+            },
+        )
+        .filter(
+            |(metadata_file_path, _, case_idx, case, _)| match case.ignore {
+                Some(true) => {
+                    tracing::warn!(
+                        metadata_file_path = %metadata_file_path.display(),
+                        case_idx,
+                        case_name = ?case.name,
+                        "Ignoring case"
+                    );
+                    false
+                }
+                Some(false) | None => true,
+            },
+        )
+        .filter(|(metadata_file_path, metadata, ..)| match metadata.required_evm_version {
+            Some(evm_version_requirement) => {
+                let is_allowed = evm_version_requirement
+                    .matches(&<L::Blockchain as revive_dt_node::Node>::evm_version())
+                    && evm_version_requirement
+                        .matches(&<F::Blockchain as revive_dt_node::Node>::evm_version());
+
+                if !is_allowed {
+                    tracing::warn!(
+                        metadata_file_path = %metadata_file_path.display(),
+                        leader_evm_version = %<L::Blockchain as revive_dt_node::Node>::evm_version(),
+                        follower_evm_version = %<F::Blockchain as revive_dt_node::Node>::evm_version(),
+                        version_requirement = %evm_version_requirement,
+                        "Skipped test since the EVM version requirement was not fulfilled."
+                    );
+                }
+
+                is_allowed
+            }
+            None => true,
+        })
+        .map(|(metadata_file_path, metadata, case_idx, case, solc_mode)| {
+            Test {
+                metadata: metadata.clone(),
+                path: metadata_file_path.to_path_buf(),
+                mode: solc_mode,
+                case_idx: case_idx.into(),
+                case: case.clone(),
+            }
+        })
+        .map(async |test| test)
+        .collect::<FuturesUnordered<_>>()
+        .filter_map(async move |test| {
+            // Check that both compilers support this test, else we skip it
+            let is_supported = does_compiler_support_mode::<L>(args, &test.mode).await.ok().unwrap_or(false) &&
+                does_compiler_support_mode::<F>(args, &test.mode).await.ok().unwrap_or(false);
+
+            // We filter_map to avoid needing to clone `test`, but return it as-is.
+            if is_supported {
+                Some(test)
+            } else {
+                tracing::warn!(
+                    metadata_file_path = %test.path.display(),
+                    case_idx = %test.case_idx,
+                    case_name = ?test.case.name,
+                    mode = %test.mode,
+                    "Skipping test as one or both of the compilers don't support it"
+                );
+                None
+            }
+        })
+}
+
+async fn does_compiler_support_mode<P: Platform>(
+    args: &Arguments,
+    mode: &Mode,
+) -> anyhow::Result<bool> {
+    let compiler_version_or_requirement = mode.compiler_version_to_use(args.solc.clone());
+    let compiler_path =
+        P::Compiler::get_compiler_executable(args, compiler_version_or_requirement).await?;
+    let compiler_version = P::Compiler::new(compiler_path.clone()).version()?;
+
+    Ok(P::Compiler::supports_mode(
+        &compiler_version,
+        mode.optimize_setting,
+        mode.pipeline,
+    ))
+}
+
+async fn start_driver_task<L, F>(
+    args: &Arguments,
+    tests: impl Stream<Item = Test>,
+    span: Span,
+    report_tx: mpsc::UnboundedSender<(Test, CaseResult)>,
+) -> anyhow::Result<impl Future<Output = ()>>
+where
+    L: Platform,
+    F: Platform,
+    L::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+    F::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+{
+    let leader_nodes = Arc::new(NodePool::<L::Blockchain>::new(args)?);
+    let follower_nodes = Arc::new(NodePool::<F::Blockchain>::new(args)?);
+    let number_concurrent_tasks = args.number_of_concurrent_tasks();
+    let cached_compiler = Arc::new(
+        CachedCompiler::new(
+            args.directory().join("compilation_cache"),
+            args.invalidate_compilation_cache,
+        )
+        .await?,
+    );
+
+    Ok(tests.for_each_concurrent(
+        // We want to limit the concurrent tasks here because:
+        //
+        // 1. We don't want to overwhelm the nodes with too many requests, leading to responses timing out.
+        // 2. We don't want to open too many files at once, leading to the OS running out of file descriptors.
+        //
+        // By default, we allow maximum of 10 ongoing requests per node in order to limit (1), and assume that
+        // this number will automatically be low enough to address (2). The user can override this.
+        Some(number_concurrent_tasks),
+        move |test| {
+            let leader_nodes = leader_nodes.clone();
+            let follower_nodes = follower_nodes.clone();
+            let report_tx = report_tx.clone();
+            let cached_compiler = cached_compiler.clone();
+
+            async move {
+                let leader_node = leader_nodes.round_robbin();
+                let follower_node = follower_nodes.round_robbin();
+
+                let tracing_span = tracing::span!(
+                    Level::INFO,
+                    "Running driver",
+                    metadata_file_path = %test.path.display(),
+                    case_idx = ?test.case_idx,
+                    solc_mode = ?test.mode,
+                );
+
+                let result = handle_case_driver::<L, F>(
+                    &test.path,
+                    &test.metadata,
+                    test.case_idx,
+                    &test.case,
+                    test.mode.clone(),
+                    args,
+                    cached_compiler,
+                    leader_node,
+                    follower_node,
+                    span,
+                )
+                .instrument(tracing_span)
+                .await;
+
+                report_tx
+                    .send((test, result))
+                    .expect("Failed to send report");
+            }
+        },
+    ))
+}
+
+async fn start_reporter_task(mut report_rx: mpsc::UnboundedReceiver<(Test, CaseResult)>) {
+    let start = Instant::now();
+
+    const GREEN: &str = "\x1B[32m";
+    const RED: &str = "\x1B[31m";
+    const COLOUR_RESET: &str = "\x1B[0m";
+    const BOLD: &str = "\x1B[1m";
+    const BOLD_RESET: &str = "\x1B[22m";
+
+    let mut number_of_successes = 0;
+    let mut number_of_failures = 0;
+    let mut failures = vec![];
+
+    // Wait for reports to come from our test runner. When the channel closes, this ends.
+    while let Some((test, case_result)) = report_rx.recv().await {
+        let case_name = test.case.name.as_deref().unwrap_or("unnamed_case");
+        let case_idx = test.case_idx;
+        let test_path = test.path.display();
+        let test_mode = test.mode.clone();
+
+        match case_result {
+            Ok(_inputs) => {
+                number_of_successes += 1;
+                eprintln!(
+                    "{GREEN}Case Succeeded:{COLOUR_RESET} {test_path} -> {case_name}:{case_idx} (mode: {test_mode})"
+                );
+            }
+            Err(err) => {
+                number_of_failures += 1;
+                eprintln!(
+                    "{RED}Case Failed:{COLOUR_RESET} {test_path} -> {case_name}:{case_idx} (mode: {test_mode})"
+                );
+                failures.push((test, err));
+            }
+        }
+    }
+
+    eprintln!();
+    let elapsed = start.elapsed();
+
+    // Now, log the failures with more complete errors at the bottom, like `cargo test` does, so
+    // that we don't have to scroll through the entire output to find them.
+    if !failures.is_empty() {
+        eprintln!("{BOLD}Failures:{BOLD_RESET}\n");
+
+        for failure in failures {
+            let (test, err) = failure;
+            let case_name = test.case.name.as_deref().unwrap_or("unnamed_case");
+            let case_idx = test.case_idx;
+            let test_path = test.path.display();
+            let test_mode = test.mode.clone();
+
+            eprintln!(
+                "---- {RED}Case Failed:{COLOUR_RESET} {test_path} -> {case_name}:{case_idx} (mode: {test_mode}) ----\n\n{err}\n"
+            );
+        }
+    }
+
+    // Summary at the end.
+    eprintln!(
+        "{} cases: {GREEN}{number_of_successes}{COLOUR_RESET} cases succeeded, {RED}{number_of_failures}{COLOUR_RESET} cases failed in {} seconds",
+        number_of_successes + number_of_failures,
+        elapsed.as_secs()
+    );
+}
+
+#[allow(clippy::too_many_arguments)]
+async fn handle_case_driver<L, F>(
+    metadata_file_path: &Path,
+    metadata: &Metadata,
+    case_idx: CaseIdx,
+    case: &Case,
+    mode: Mode,
+    config: &Arguments,
+    cached_compiler: Arc<CachedCompiler>,
+    leader_node: &L::Blockchain,
+    follower_node: &F::Blockchain,
+    _: Span,
+) -> anyhow::Result<usize>
+where
+    L: Platform,
+    F: Platform,
+    L::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+    F::Blockchain: revive_dt_node::Node + Send + Sync + 'static,
+{
+    let leader_pre_link_contracts = cached_compiler
+        .compile_contracts::<L>(metadata, metadata_file_path, &mode, config, None)
+        .await?
+        .0
+        .contracts;
+    let follower_pre_link_contracts = cached_compiler
+        .compile_contracts::<F>(metadata, metadata_file_path, &mode, config, None)
+        .await?
+        .0
+        .contracts;
+
+    let mut leader_deployed_libraries = None::<HashMap<_, _>>;
+    let mut follower_deployed_libraries = None::<HashMap<_, _>>;
+    let mut contract_sources = metadata.contract_sources()?;
+    for library_instance in metadata
+        .libraries
+        .iter()
+        .flatten()
+        .flat_map(|(_, map)| map.values())
+    {
+        let ContractPathAndIdent {
+            contract_source_path: library_source_path,
+            contract_ident: library_ident,
+        } = contract_sources
+            .remove(library_instance)
+            .context("Failed to find the contract source")?;
+
+        let (leader_code, leader_abi) = leader_pre_link_contracts
+            .get(&library_source_path)
+            .and_then(|contracts| contracts.get(library_ident.as_str()))
+            .context("Declared library was not compiled")?;
+        let (follower_code, follower_abi) = follower_pre_link_contracts
+            .get(&library_source_path)
+            .and_then(|contracts| contracts.get(library_ident.as_str()))
+            .context("Declared library was not compiled")?;
+
+        let leader_code = match alloy::hex::decode(leader_code) {
+            Ok(code) => code,
+            Err(error) => {
+                tracing::error!(
+                    ?error,
+                    contract_source_path = library_source_path.display().to_string(),
+                    contract_ident = library_ident.as_ref(),
+                    "Failed to hex-decode byte code - This could possibly mean that the bytecode requires linking"
+                );
+                anyhow::bail!("Failed to hex-decode the byte code {}", error)
+            }
+        };
+        let follower_code = match alloy::hex::decode(follower_code) {
+            Ok(code) => code,
+            Err(error) => {
+                tracing::error!(
+                    ?error,
+                    contract_source_path = library_source_path.display().to_string(),
+                    contract_ident = library_ident.as_ref(),
+                    "Failed to hex-decode byte code - This could possibly mean that the bytecode requires linking"
+                );
+                anyhow::bail!("Failed to hex-decode the byte code {}", error)
+            }
+        };
+
+        // Getting the deployer address from the cases themselves. This is to ensure that we're
+        // doing the deployments from different accounts and therefore we're not slowed down by
+        // the nonce.
+        let deployer_address = case
+            .steps
+            .iter()
+            .filter_map(|step| match step {
+                Step::FunctionCall(input) => Some(input.caller),
+                Step::BalanceAssertion(..) => None,
+                Step::StorageEmptyAssertion(..) => None,
+            })
+            .next()
+            .unwrap_or(Input::default_caller());
+        let leader_tx = TransactionBuilder::<Ethereum>::with_deploy_code(
+            TransactionRequest::default().from(deployer_address),
+            leader_code,
+        );
+        let follower_tx = TransactionBuilder::<Ethereum>::with_deploy_code(
+            TransactionRequest::default().from(deployer_address),
+            follower_code,
+        );
+
+        let leader_receipt = match leader_node.execute_transaction(leader_tx).await {
+            Ok(receipt) => receipt,
+            Err(error) => {
+                tracing::error!(
+                    node = std::any::type_name::<L>(),
+                    ?error,
+                    "Contract deployment transaction failed."
+                );
+                return Err(error);
+            }
+        };
+        let follower_receipt = match follower_node.execute_transaction(follower_tx).await {
+            Ok(receipt) => receipt,
+            Err(error) => {
+                tracing::error!(
+                    node = std::any::type_name::<F>(),
+                    ?error,
+                    "Contract deployment transaction failed."
+                );
+                return Err(error);
+            }
+        };
+
+        tracing::info!(
+            ?library_instance,
+            library_address = ?leader_receipt.contract_address,
+            "Deployed library to leader"
+        );
+        tracing::info!(
+            ?library_instance,
+            library_address = ?follower_receipt.contract_address,
+            "Deployed library to follower"
+        );
+
+        let Some(leader_library_address) = leader_receipt.contract_address else {
+            anyhow::bail!("Contract deployment didn't return an address");
+        };
+        let Some(follower_library_address) = follower_receipt.contract_address else {
+            anyhow::bail!("Contract deployment didn't return an address");
+        };
+
+        leader_deployed_libraries.get_or_insert_default().insert(
+            library_instance.clone(),
+            (
+                library_ident.clone(),
+                leader_library_address,
+                leader_abi.clone(),
+            ),
+        );
+        follower_deployed_libraries.get_or_insert_default().insert(
+            library_instance.clone(),
+            (
+                library_ident,
+                follower_library_address,
+                follower_abi.clone(),
+            ),
+        );
+    }
+
+    let (leader_post_link_contracts, leader_compiler_version) = cached_compiler
+        .compile_contracts::<L>(
+            metadata,
+            metadata_file_path,
+            &mode,
+            config,
+            leader_deployed_libraries.as_ref(),
+        )
+        .await?;
+    let (follower_post_link_contracts, follower_compiler_version) = cached_compiler
+        .compile_contracts::<F>(
+            metadata,
+            metadata_file_path,
+            &mode,
+            config,
+            follower_deployed_libraries.as_ref(),
+        )
+        .await?;
+
+    let leader_state = CaseState::<L>::new(
+        leader_compiler_version,
+        leader_post_link_contracts.contracts,
+        leader_deployed_libraries.unwrap_or_default(),
+    );
+    let follower_state = CaseState::<F>::new(
+        follower_compiler_version,
+        follower_post_link_contracts.contracts,
+        follower_deployed_libraries.unwrap_or_default(),
+    );
+
+    let mut driver = CaseDriver::<L, F>::new(
+        metadata,
+        case,
+        case_idx,
+        leader_node,
+        follower_node,
+        leader_state,
+        follower_state,
+    );
+    driver.execute().await
+}
+
+async fn execute_corpus(
+    args: &Arguments,
+    tests: &[MetadataFile],
+    span: Span,
+) -> anyhow::Result<()> {
     match (&args.leader, &args.follower) {
         (TestingPlatform::Geth, TestingPlatform::Kitchensink) => {
-            run_driver::<Geth, Kitchensink>(args, tests, span)?
+            run_driver::<Geth, Kitchensink>(args, tests, span).await?
         }
         (TestingPlatform::Geth, TestingPlatform::Geth) => {
-            run_driver::<Geth, Geth>(args, tests, span)?
+            run_driver::<Geth, Geth>(args, tests, span).await?
         }
         _ => unimplemented!(),
     }
@@ -155,24 +628,55 @@ fn execute_corpus(args: &Arguments, tests: &[MetadataFile], span: Span) -> anyho
     Ok(())
 }
 
-fn compile_corpus(
+async fn compile_corpus(
     config: &Arguments,
     tests: &[MetadataFile],
     platform: &TestingPlatform,
-    span: Span,
+    _: Span,
 ) {
-    tests.par_iter().for_each(|metadata| {
+    let tests = tests.iter().flat_map(|metadata| {
-        for mode in &metadata.solc_modes() {
+        metadata
-            match platform {
+            .solc_modes()
-                TestingPlatform::Geth => {
+            .into_iter()
-                    let mut state = State::<Geth>::new(config, span);
+            .map(move |solc_mode| (metadata, solc_mode))
-                    let _ = state.build_contracts(mode, metadata);
-                }
-                TestingPlatform::Kitchensink => {
-                    let mut state = State::<Kitchensink>::new(config, span);
-                    let _ = state.build_contracts(mode, metadata);
-                }
-            };
-        }
     });
+
+    let file = tempfile::NamedTempFile::new().expect("Failed to create temp file");
+    let cached_compiler = CachedCompiler::new(file.path(), false)
+        .await
+        .map(Arc::new)
+        .expect("Failed to create the cached compiler");
+
+    futures::stream::iter(tests)
+        .for_each_concurrent(None, |(metadata, mode)| {
+            let cached_compiler = cached_compiler.clone();
+
+            async move {
+                match platform {
+                    TestingPlatform::Geth => {
+                        let _ = cached_compiler
+                            .compile_contracts::<Geth>(
+                                metadata,
+                                metadata.path.as_path(),
+                                &mode,
+                                config,
+                                None,
+                            )
+                            .await;
+                    }
+                    TestingPlatform::Kitchensink => {
+                        let _ = cached_compiler
+                            .compile_contracts::<Kitchensink>(
+                                metadata,
+                                metadata.path.as_path(),
+                                &mode,
+                                config,
+                                None,
+                            )
+                            .await;
+                    }
+                }
+            }
+        })
+        .await;
 }

crates/format/Cargo.toml

@@ -11,11 +11,17 @@ rust-version.workspace = true
 [dependencies]
 revive-dt-common = { workspace = true }
 
+revive-common = { workspace = true }
+
 alloy = { workspace = true }
 alloy-primitives = { workspace = true }
 alloy-sol-types = { workspace = true }
 anyhow = { workspace = true }
+regex = { workspace = true }
 tracing = { workspace = true }
 semver = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
+
+[dev-dependencies]
+tokio = { workspace = true }

crates/format/src/case.rs

@@ -1,31 +1,50 @@
-use serde::Deserialize;
+use serde::{Deserialize, Serialize};
 
 use revive_dt_common::macros::define_wrapper_type;
 
 use crate::{
-    input::{Expected, Input},
+    input::{Expected, Step},
-    mode::Mode,
+    mode::ParsedMode,
 };
 
-#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+#[derive(Debug, Default, Serialize, Deserialize, Clone, Eq, PartialEq)]
 pub struct Case {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub name: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub comment: Option<String>,
-    pub modes: Option<Vec<Mode>>,
+
-    pub inputs: Vec<Input>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub modes: Option<Vec<ParsedMode>>,
+
+    #[serde(rename = "inputs")]
+    pub steps: Vec<Step>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub group: Option<String>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub expected: Option<Expected>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ignore: Option<bool>,
 }
 
 impl Case {
-    pub fn inputs_iterator(&self) -> impl Iterator<Item = Input> {
+    #[allow(irrefutable_let_patterns)]
-        let inputs_len = self.inputs.len();
+    pub fn steps_iterator(&self) -> impl Iterator<Item = Step> {
-        self.inputs
+        let steps_len = self.steps.len();
+        self.steps
             .clone()
             .into_iter()
             .enumerate()
-            .map(move |(idx, mut input)| {
+            .map(move |(idx, mut step)| {
-                if idx + 1 == inputs_len {
+                let Step::FunctionCall(ref mut input) = step else {
+                    return step;
+                };
+
+                if idx + 1 == steps_len {
                     if input.expected.is_none() {
                         input.expected = self.expected.clone();
                     }
@@ -35,9 +54,9 @@ impl Case {
                     // the case? What are we supposed to do with that final expected field on the
                     // case?
 
-                    input
+                    step
                 } else {
-                    input
+                    step
                 }
             })
     }
@@ -48,3 +67,9 @@ define_wrapper_type!(
     #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
     pub struct CaseIdx(usize);
 );
+
+impl std::fmt::Display for CaseIdx {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.0)
+    }
+}

crates/format/src/corpus.rs

@@ -3,6 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
+use revive_dt_common::cached_fs::read_dir;
 use serde::{Deserialize, Serialize};
 
 use crate::metadata::MetadataFile;
@@ -54,7 +55,7 @@ impl Corpus {
 /// `path` is expected to be a directory.
 pub fn collect_metadata(path: &Path, tests: &mut Vec<MetadataFile>) {
     if path.is_dir() {
-        let dir_entry = match std::fs::read_dir(path) {
+        let dir_entry = match read_dir(path) {
             Ok(dir_entry) => dir_entry,
             Err(error) => {
                 tracing::error!("failed to read dir '{}': {error}", path.display());
@@ -62,8 +63,8 @@ pub fn collect_metadata(path: &Path, tests: &mut Vec<MetadataFile>) {
             }
         };
 
-        for entry in dir_entry {
+        for path in dir_entry {
-            let entry = match entry {
+            let path = match path {
                 Ok(entry) => entry,
                 Err(error) => {
                     tracing::error!("error reading dir entry: {error}");
@@ -71,7 +72,6 @@ pub fn collect_metadata(path: &Path, tests: &mut Vec<MetadataFile>) {
                 }
             };
 
-            let path = entry.path();
             if path.is_dir() {
                 collect_metadata(&path, tests);
                 continue;

crates/format/src/input.rs

@@ -3,7 +3,7 @@ use std::collections::HashMap;
 use alloy::{
     eips::BlockNumberOrTag,
     hex::ToHexExt,
-    json_abi::JsonAbi,
+    json_abi::Function,
     network::TransactionBuilder,
     primitives::{Address, Bytes, U256},
     rpc::types::TransactionRequest,
@@ -15,26 +15,90 @@ use serde::{Deserialize, Serialize};
 
 use revive_dt_common::macros::define_wrapper_type;
 
-use crate::metadata::ContractInstance;
 use crate::traits::ResolverApi;
+use crate::{metadata::ContractInstance, traits::ResolutionContext};
 
-#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+/// A test step.
+///
+/// A test step can be anything. It could be an invocation to a function, an assertion, or any other
+/// action that needs to be run or executed on the nodes used in the tests.
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
+#[serde(untagged)]
+pub enum Step {
+    /// A function call or an invocation to some function on some smart contract.
+    FunctionCall(Box<Input>),
+    /// A step for performing a balance assertion on some account or contract.
+    BalanceAssertion(Box<BalanceAssertion>),
+    /// A step for asserting that the storage of some contract or account is empty.
+    StorageEmptyAssertion(Box<StorageEmptyAssertion>),
+}
+
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
 pub struct Input {
     #[serde(default = "Input::default_caller")]
     pub caller: Address,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub comment: Option<String>,
+
     #[serde(default = "Input::default_instance")]
     pub instance: ContractInstance,
+
     pub method: Method,
+
     #[serde(default)]
     pub calldata: Calldata,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub expected: Option<Expected>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub value: Option<EtherValue>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub storage: Option<HashMap<String, Calldata>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub variable_assignments: Option<VariableAssignments>,
 }
 
-#[derive(Clone, Debug, Deserialize, Eq, PartialEq)]
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
+pub struct BalanceAssertion {
+    /// An optional comment on the balance assertion.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub comment: Option<String>,
+
+    /// The address that the balance assertion should be done on.
+    ///
+    /// This is a string which will be resolved into an address when being processed. Therefore,
+    /// this could be a normal hex address, a variable such as `Test.address`, or perhaps even a
+    /// full on variable like `$VARIABLE:Uniswap`. It follows the same resolution rules that are
+    /// followed in the calldata.
+    pub address: String,
+
+    /// The amount of balance to assert that the account or contract has.
+    pub expected_balance: U256,
+}
+
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
+pub struct StorageEmptyAssertion {
+    /// An optional comment on the storage empty assertion.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub comment: Option<String>,
+
+    /// The address that the balance assertion should be done on.
+    ///
+    /// This is a string which will be resolved into an address when being processed. Therefore,
+    /// this could be a normal hex address, a variable such as `Test.address`, or perhaps even a
+    /// full on variable like `$VARIABLE:Uniswap`. It follows the same resolution rules that are
+    /// followed in the calldata.
+    pub address: String,
+
+    /// A boolean of whether the storage of the address is empty or not.
+    pub is_storage_empty: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
 #[serde(untagged)]
 pub enum Expected {
     Calldata(Calldata),
@@ -42,17 +106,21 @@ pub enum Expected {
     ExpectedMany(Vec<ExpectedOutput>),
 }
 
-#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
 pub struct ExpectedOutput {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub compiler_version: Option<VersionReq>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub return_data: Option<Calldata>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub events: Option<Vec<Event>>,
     #[serde(default)]
     pub exception: bool,
 }
 
-#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
 pub struct Event {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub address: Option<String>,
     pub topics: Vec<String>,
     pub values: Calldata,
@@ -109,7 +177,7 @@ pub struct Event {
 /// [`Single`]: Calldata::Single
 /// [`Compound`]: Calldata::Compound
 /// [reverse polish notation]: https://en.wikipedia.org/wiki/Reverse_Polish_notation
-#[derive(Clone, Debug, Deserialize, Eq, PartialEq)]
+#[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq)]
 #[serde(untagged)]
 pub enum Calldata {
     Single(Bytes),
@@ -143,7 +211,7 @@ enum Operation {
 }
 
 /// Specify how the contract is called.
-#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+#[derive(Debug, Default, Serialize, Deserialize, Clone, Eq, PartialEq)]
 pub enum Method {
     /// Initiate a deploy transaction, calling contracts constructor.
     ///
@@ -168,7 +236,7 @@ define_wrapper_type!(
     pub struct EtherValue(U256);
 );
 
-#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq)]
+#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq)]
 pub struct VariableAssignments {
     /// A vector of the variable names to assign to the return data.
     ///
@@ -187,36 +255,21 @@ impl Input {
         ContractInstance::new("Test")
     }
 
-    fn instance_to_address(
+    pub async fn encoded_input(
         &self,
-        instance: &ContractInstance,
+        resolver: &impl ResolverApi,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        context: ResolutionContext<'_>,
-    ) -> anyhow::Result<Address> {
-        deployed_contracts
-            .get(instance)
-            .map(|(a, _)| *a)
-            .ok_or_else(|| anyhow::anyhow!("instance {instance:?} not deployed"))
-    }
-
-    pub fn encoded_input<'a>(
-        &'a self,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<Bytes> {
         match self.method {
             Method::Deployer | Method::Fallback => {
-                let calldata =
+                let calldata = self.calldata.calldata(resolver, context).await?;
-                    self.calldata
-                        .calldata(deployed_contracts, variables, chain_state_provider)?;
 
                 Ok(calldata.into())
             }
             Method::FunctionName(ref function_name) => {
-                let Some(abi) = deployed_contracts.get(&self.instance).map(|(_, a)| a) else {
+                let Some(abi) = context.deployed_contract_abi(&self.instance) else {
                     tracing::error!(
                         contract_name = self.instance.as_ref(),
-                        available_abis = ?deployed_contracts.keys().collect::<Vec<_>>(),
                         "Attempted to lookup ABI of contract but it wasn't found"
                     );
                     anyhow::bail!("ABI for instance '{}' not found", self.instance.as_ref());
@@ -227,17 +280,27 @@ impl Input {
                 // We follow the same logic that's implemented in the matter-labs-tester where they resolve
                 // the function name into a function selector and they assume that he function doesn't have
                 // any existing overloads.
+                // Overloads are handled by providing the full function signature in the "function
+                // name".
                 // https://github.com/matter-labs/era-compiler-tester/blob/1dfa7d07cba0734ca97e24704f12dd57f6990c2c/compiler_tester/src/test/case/input/mod.rs#L158-L190
-                let function = abi
+                let selector = if function_name.contains('(') && function_name.contains(')') {
-                    .functions()
+                    Function::parse(function_name)
-                    .find(|function| function.signature().starts_with(function_name))
+                        .context(
-                    .ok_or_else(|| {
+                            "Failed to parse the provided function name into a function signature",
-                        anyhow::anyhow!(
+                        )?
-                            "Function with name {:?} not found in ABI for the instance {:?}",
+                        .selector()
-                            function_name,
+                } else {
-                            &self.instance
+                    abi.functions()
-                        )
+                        .find(|function| function.signature().starts_with(function_name))
-                    })?;
+                        .ok_or_else(|| {
+                            anyhow::anyhow!(
+                                "Function with name {:?} not found in ABI for the instance {:?}",
+                                function_name,
+                                &self.instance
+                            )
+                        })?
+                        .selector()
+                };
 
                 tracing::trace!("Functions found for instance: {}", self.instance.as_ref());
 
@@ -253,13 +316,10 @@ impl Input {
                 // We're using indices in the following code in order to avoid the need for us to allocate
                 // a new buffer for each one of the resolved arguments.
                 let mut calldata = Vec::<u8>::with_capacity(4 + self.calldata.size_requirement());
-                calldata.extend(function.selector().0);
+                calldata.extend(selector.0);
-                self.calldata.calldata_into_slice(
+                self.calldata
-                    &mut calldata,
+                    .calldata_into_slice(&mut calldata, resolver, context)
-                    deployed_contracts,
+                    .await?;
-                    variables,
-                    chain_state_provider,
-                )?;
 
                 Ok(calldata.into())
             }
@@ -267,13 +327,12 @@ impl Input {
     }
 
     /// Parse this input into a legacy transaction.
-    pub fn legacy_transaction<'a>(
+    pub async fn legacy_transaction(
-        &'a self,
+        &self,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<TransactionRequest> {
-        let input_data = self.encoded_input(deployed_contracts, variables, chain_state_provider)?;
+        let input_data = self.encoded_input(resolver, context).await?;
         let transaction_request = TransactionRequest::default().from(self.caller).value(
             self.value
                 .map(|value| value.into_inner())
@@ -282,7 +341,10 @@ impl Input {
         match self.method {
             Method::Deployer => Ok(transaction_request.with_deploy_code(input_data)),
             _ => Ok(transaction_request
-                .to(self.instance_to_address(&self.instance, deployed_contracts)?)
+                .to(context
+                    .deployed_contract_address(&self.instance)
+                    .context("Failed to get the contract address")
+                    .copied()?)
                 .input(input_data.into())),
         }
     }
@@ -351,28 +413,22 @@ impl Calldata {
         }
     }
 
-    pub fn calldata<'a>(
+    pub async fn calldata(
-        &'a self,
+        &self,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<Vec<u8>> {
         let mut buffer = Vec::<u8>::with_capacity(self.size_requirement());
-        self.calldata_into_slice(
+        self.calldata_into_slice(&mut buffer, resolver, context)
-            &mut buffer,
+            .await?;
-            deployed_contracts,
-            variables,
-            chain_state_provider,
-        )?;
         Ok(buffer)
     }
 
-    pub fn calldata_into_slice<'a>(
+    pub async fn calldata_into_slice(
-        &'a self,
+        &self,
         buffer: &mut Vec<u8>,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<()> {
         match self {
             Calldata::Single(bytes) => {
@@ -380,7 +436,7 @@ impl Calldata {
             }
             Calldata::Compound(items) => {
                 for (arg_idx, arg) in items.iter().enumerate() {
-                    match arg.resolve(deployed_contracts, variables.clone(), chain_state_provider) {
+                    match arg.resolve(resolver, context).await {
                         Ok(resolved) => {
                             buffer.extend(resolved.to_be_bytes::<32>());
                         }
@@ -403,12 +459,11 @@ impl Calldata {
     }
 
     /// Checks if this [`Calldata`] is equivalent to the passed calldata bytes.
-    pub fn is_equivalent<'a>(
+    pub async fn is_equivalent(
-        &'a self,
+        &self,
         other: &[u8],
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<bool> {
         match self {
             Calldata::Single(calldata) => Ok(calldata == other),
@@ -430,8 +485,7 @@ impl Calldata {
                         std::borrow::Cow::Borrowed(other)
                     };
 
-                    let this =
+                    let this = this.resolve(resolver, context).await?;
-                        this.resolve(deployed_contracts, variables.clone(), chain_state_provider)?;
                     let other = U256::from_be_slice(&other);
                     if this != other {
                         return Ok(false);
@@ -444,19 +498,18 @@ impl Calldata {
 }
 
 impl CalldataItem {
-    fn resolve<'a>(
+    async fn resolve(
-        &'a self,
+        &self,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<U256> {
         let mut stack = Vec::<CalldataToken<U256>>::new();
 
         for token in self
             .calldata_tokens()
-            .map(|token| token.resolve(deployed_contracts, variables.clone(), chain_state_provider))
+            .map(|token| token.resolve(resolver, context))
         {
-            let token = token?;
+            let token = token.await?;
             let new_token = match token {
                 CalldataToken::Item(_) => token,
                 CalldataToken::Operation(operation) => {
@@ -509,7 +562,7 @@ impl CalldataItem {
         }
     }
 
-    fn calldata_tokens<'a>(&'a self) -> impl Iterator<Item = CalldataToken<&'a str>> + 'a {
+    fn calldata_tokens(&self) -> impl Iterator<Item = CalldataToken<&str>> {
         self.0.split(' ').map(|item| match item {
             "+" => CalldataToken::Operation(Operation::Addition),
             "-" => CalldataToken::Operation(Operation::Subtraction),
@@ -533,9 +586,11 @@ impl<T> CalldataToken<T> {
     const GAS_LIMIT_VARIABLE: &str = "$GAS_LIMIT";
     const COINBASE_VARIABLE: &str = "$COINBASE";
     const DIFFICULTY_VARIABLE: &str = "$DIFFICULTY";
+    const BLOCK_BASE_FEE_VARIABLE: &str = "$BASE_FEE";
     const BLOCK_HASH_VARIABLE_PREFIX: &str = "$BLOCK_HASH";
     const BLOCK_NUMBER_VARIABLE: &str = "$BLOCK_NUMBER";
     const BLOCK_TIMESTAMP_VARIABLE: &str = "$BLOCK_TIMESTAMP";
+    const TRANSACTION_GAS_PRICE: &str = "$TRANSACTION_GAS_PRICE";
     const VARIABLE_PREFIX: &str = "$VARIABLE:";
 
     fn into_item(self) -> Option<T> {
@@ -555,24 +610,21 @@ impl<T: AsRef<str>> CalldataToken<T> {
     /// This piece of code is taken from the matter-labs-tester repository which is licensed under
     /// MIT or Apache. The original source code can be found here:
     /// https://github.com/matter-labs/era-compiler-tester/blob/0ed598a27f6eceee7008deab3ff2311075a2ec69/compiler_tester/src/test/case/input/value.rs#L43-L146
-    fn resolve<'a>(
+    async fn resolve(
         self,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        resolver: &impl ResolverApi,
-        variables: impl Into<Option<&'a HashMap<String, U256>>> + Clone,
+        context: ResolutionContext<'_>,
-        chain_state_provider: &impl ResolverApi,
     ) -> anyhow::Result<CalldataToken<U256>> {
         match self {
             Self::Item(item) => {
                 let item = item.as_ref();
                 let value = if let Some(instance) = item.strip_suffix(Self::ADDRESS_VARIABLE_SUFFIX)
                 {
-                    Ok(U256::from_be_slice(
+                    context
-                        deployed_contracts
+                        .deployed_contract_address(&ContractInstance::new(instance))
-                            .get(&ContractInstance::new(instance))
+                        .ok_or_else(|| anyhow::anyhow!("Instance `{}` not found", instance))
-                            .map(|(a, _)| *a)
+                        .map(AsRef::as_ref)
-                            .ok_or_else(|| anyhow::anyhow!("Instance `{}` not found", instance))?
+                        .map(U256::from_be_slice)
-                            .as_ref(),
-                    ))
                 } else if let Some(value) = item.strip_prefix(Self::NEGATIVE_VALUE_PREFIX) {
                     let value = U256::from_str_radix(value, 10).map_err(|error| {
                         anyhow::anyhow!("Invalid decimal literal after `-`: {}", error)
@@ -585,23 +637,36 @@ impl<T: AsRef<str>> CalldataToken<T> {
                         .ok_or_else(|| anyhow::anyhow!("`-0` is invalid literal"))?;
                     Ok(U256::MAX.checked_sub(value).expect("Always valid"))
                 } else if let Some(value) = item.strip_prefix(Self::HEX_LITERAL_PREFIX) {
-                    Ok(U256::from_str_radix(value, 16).map_err(|error| {
+                    U256::from_str_radix(value, 16)
-                        anyhow::anyhow!("Invalid hexadecimal literal: {}", error)
+                        .map_err(|error| anyhow::anyhow!("Invalid hexadecimal literal: {}", error))
-                    })?)
                 } else if item == Self::CHAIN_VARIABLE {
-                    let chain_id = chain_state_provider.chain_id()?;
+                    resolver.chain_id().await.map(U256::from)
-                    Ok(U256::from(chain_id))
+                } else if item == Self::TRANSACTION_GAS_PRICE {
+                    context
+                        .transaction_hash()
+                        .context("No transaction hash provided to get the transaction gas price")
+                        .map(|tx_hash| resolver.transaction_gas_price(tx_hash))?
+                        .await
+                        .map(U256::from)
                 } else if item == Self::GAS_LIMIT_VARIABLE {
-                    let gas_limit =
+                    resolver
-                        chain_state_provider.block_gas_limit(BlockNumberOrTag::Latest)?;
+                        .block_gas_limit(context.resolve_block_number(BlockNumberOrTag::Latest))
-                    Ok(U256::from(gas_limit))
+                        .await
+                        .map(U256::from)
                 } else if item == Self::COINBASE_VARIABLE {
-                    let coinbase = chain_state_provider.block_coinbase(BlockNumberOrTag::Latest)?;
+                    resolver
-                    Ok(U256::from_be_slice(coinbase.as_ref()))
+                        .block_coinbase(context.resolve_block_number(BlockNumberOrTag::Latest))
+                        .await
+                        .map(|address| U256::from_be_slice(address.as_ref()))
                 } else if item == Self::DIFFICULTY_VARIABLE {
-                    let block_difficulty =
+                    resolver
-                        chain_state_provider.block_difficulty(BlockNumberOrTag::Latest)?;
+                        .block_difficulty(context.resolve_block_number(BlockNumberOrTag::Latest))
-                    Ok(block_difficulty)
+                        .await
+                } else if item == Self::BLOCK_BASE_FEE_VARIABLE {
+                    resolver
+                        .block_base_fee(context.resolve_block_number(BlockNumberOrTag::Latest))
+                        .await
+                        .map(U256::from)
                 } else if item.starts_with(Self::BLOCK_HASH_VARIABLE_PREFIX) {
                     let offset: u64 = item
                         .split(':')
@@ -609,33 +674,34 @@ impl<T: AsRef<str>> CalldataToken<T> {
                         .and_then(|value| value.parse().ok())
                         .unwrap_or_default();
 
-                    let current_block_number = chain_state_provider.last_block_number()?;
+                    let current_block_number = match context.tip_block_number() {
-                    let desired_block_number = current_block_number - offset;
+                        Some(block_number) => *block_number,
+                        None => resolver.last_block_number().await?,
+                    };
+                    let desired_block_number = current_block_number.saturating_sub(offset);
 
-                    let block_hash =
+                    let block_hash = resolver.block_hash(desired_block_number.into()).await?;
-                        chain_state_provider.block_hash(desired_block_number.into())?;
 
                     Ok(U256::from_be_bytes(block_hash.0))
                 } else if item == Self::BLOCK_NUMBER_VARIABLE {
-                    let current_block_number = chain_state_provider.last_block_number()?;
+                    let current_block_number = match context.tip_block_number() {
+                        Some(block_number) => *block_number,
+                        None => resolver.last_block_number().await?,
+                    };
                     Ok(U256::from(current_block_number))
                 } else if item == Self::BLOCK_TIMESTAMP_VARIABLE {
-                    let timestamp =
+                    resolver
-                        chain_state_provider.block_timestamp(BlockNumberOrTag::Latest)?;
+                        .block_timestamp(context.resolve_block_number(BlockNumberOrTag::Latest))
-                    Ok(U256::from(timestamp))
+                        .await
+                        .map(U256::from)
                 } else if let Some(variable_name) = item.strip_prefix(Self::VARIABLE_PREFIX) {
-                    let Some(variables) = variables.into() else {
+                    context
-                        anyhow::bail!(
+                        .variable(variable_name)
-                            "Variable resolution required but no variables were passed in"
+                        .context("Variable lookup failed")
-                        );
+                        .copied()
-                    };
-                    let Some(variable) = variables.get(variable_name) else {
-                        anyhow::bail!("No variable found with the name {}", variable_name)
-                    };
-                    Ok(*variable)
                 } else {
-                    Ok(U256::from_str_radix(item, 10)
+                    U256::from_str_radix(item, 10)
-                        .map_err(|error| anyhow::anyhow!("Invalid decimal literal: {}", error))?)
+                        .map_err(|error| anyhow::anyhow!("Invalid decimal literal: {}", error))
                 };
                 value.map(CalldataToken::Item)
             }
@@ -673,52 +739,56 @@ impl<'de> Deserialize<'de> for EtherValue {
 #[cfg(test)]
 mod tests {
 
-    use super::*;
+    use alloy::{eips::BlockNumberOrTag, json_abi::JsonAbi};
-    use alloy::json_abi::JsonAbi;
+    use alloy_primitives::{BlockHash, BlockNumber, BlockTimestamp, ChainId, TxHash, address};
-    use alloy_primitives::address;
     use alloy_sol_types::SolValue;
     use std::collections::HashMap;
 
+    use super::*;
+    use crate::metadata::ContractIdent;
+
     struct MockResolver;
 
     impl ResolverApi for MockResolver {
-        fn chain_id(&self) -> anyhow::Result<alloy_primitives::ChainId> {
+        async fn chain_id(&self) -> anyhow::Result<ChainId> {
             Ok(0x123)
         }
 
-        fn block_gas_limit(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<u128> {
+        async fn block_gas_limit(&self, _: BlockNumberOrTag) -> anyhow::Result<u128> {
             Ok(0x1234)
         }
 
-        fn block_coinbase(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<Address> {
+        async fn block_coinbase(&self, _: BlockNumberOrTag) -> anyhow::Result<Address> {
             Ok(Address::ZERO)
         }
 
-        fn block_difficulty(&self, _: alloy::eips::BlockNumberOrTag) -> anyhow::Result<U256> {
+        async fn block_difficulty(&self, _: BlockNumberOrTag) -> anyhow::Result<U256> {
             Ok(U256::from(0x12345u128))
         }
 
-        fn block_hash(
+        async fn block_base_fee(&self, _: BlockNumberOrTag) -> anyhow::Result<u64> {
-            &self,
+            Ok(0x100)
-            _: alloy::eips::BlockNumberOrTag,
+        }
-        ) -> anyhow::Result<alloy_primitives::BlockHash> {
+
+        async fn block_hash(&self, _: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
             Ok([0xEE; 32].into())
         }
 
-        fn block_timestamp(
+        async fn block_timestamp(&self, _: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
-            &self,
-            _: alloy::eips::BlockNumberOrTag,
-        ) -> anyhow::Result<alloy_primitives::BlockTimestamp> {
             Ok(0x123456)
         }
 
-        fn last_block_number(&self) -> anyhow::Result<alloy_primitives::BlockNumber> {
+        async fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
             Ok(0x1234567)
         }
+
+        async fn transaction_gas_price(&self, _: &TxHash) -> anyhow::Result<u128> {
+            Ok(0x200)
+        }
     }
 
-    #[test]
+    #[tokio::test]
-    fn test_encoded_input_uint256() {
+    async fn test_encoded_input_uint256() {
         let raw_metadata = r#"
             [
                 {
@@ -750,12 +820,12 @@ mod tests {
         let mut contracts = HashMap::new();
         contracts.insert(
             ContractInstance::new("Contract"),
-            (Address::ZERO, parsed_abi),
+            (ContractIdent::new("Contract"), Address::ZERO, parsed_abi),
         );
 
-        let encoded = input
+        let resolver = MockResolver;
-            .encoded_input(&contracts, None, &MockResolver)
+        let context = ResolutionContext::default().with_deployed_contracts(&contracts);
-            .unwrap();
+        let encoded = input.encoded_input(&resolver, context).await.unwrap();
         assert!(encoded.0.starts_with(&selector));
 
         type T = (u64,);
@@ -763,8 +833,8 @@ mod tests {
         assert_eq!(decoded.0, 42);
     }
 
-    #[test]
+    #[tokio::test]
-    fn test_encoded_input_address_with_signature() {
+    async fn test_encoded_input_address_with_signature() {
         let raw_abi = r#"[
         {
             "inputs": [{"name": "recipient", "type": "address"}],
@@ -794,12 +864,12 @@ mod tests {
         let mut contracts = HashMap::new();
         contracts.insert(
             ContractInstance::new("Contract"),
-            (Address::ZERO, parsed_abi),
+            (ContractIdent::new("Contract"), Address::ZERO, parsed_abi),
         );
 
-        let encoded = input
+        let resolver = MockResolver;
-            .encoded_input(&contracts, None, &MockResolver)
+        let context = ResolutionContext::default().with_deployed_contracts(&contracts);
-            .unwrap();
+        let encoded = input.encoded_input(&resolver, context).await.unwrap();
         assert!(encoded.0.starts_with(&selector));
 
         type T = (alloy_primitives::Address,);
@@ -810,8 +880,8 @@ mod tests {
         );
     }
 
-    #[test]
+    #[tokio::test]
-    fn test_encoded_input_address() {
+    async fn test_encoded_input_address() {
         let raw_abi = r#"[
         {
             "inputs": [{"name": "recipient", "type": "address"}],
@@ -841,12 +911,12 @@ mod tests {
         let mut contracts = HashMap::new();
         contracts.insert(
             ContractInstance::new("Contract"),
-            (Address::ZERO, parsed_abi),
+            (ContractIdent::new("Contract"), Address::ZERO, parsed_abi),
         );
 
-        let encoded = input
+        let resolver = MockResolver;
-            .encoded_input(&contracts, None, &MockResolver)
+        let context = ResolutionContext::default().with_deployed_contracts(&contracts);
-            .unwrap();
+        let encoded = input.encoded_input(&resolver, context).await.unwrap();
         assert!(encoded.0.starts_with(&selector));
 
         type T = (alloy_primitives::Address,);
@@ -857,50 +927,56 @@ mod tests {
         );
     }
 
-    fn resolve_calldata_item(
+    async fn resolve_calldata_item(
         input: &str,
-        deployed_contracts: &HashMap<ContractInstance, (Address, JsonAbi)>,
+        deployed_contracts: &HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>,
-        chain_state_provider: &impl ResolverApi,
+        resolver: &impl ResolverApi,
     ) -> anyhow::Result<U256> {
-        CalldataItem::new(input).resolve(deployed_contracts, None, chain_state_provider)
+        let context = ResolutionContext::default().with_deployed_contracts(deployed_contracts);
+        CalldataItem::new(input).resolve(resolver, context).await
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_chain_id_variable() {
+    async fn resolver_can_resolve_chain_id_variable() {
         // Arrange
         let input = "$CHAIN_ID";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
-        assert_eq!(resolved, U256::from(MockResolver.chain_id().unwrap()))
+        assert_eq!(resolved, U256::from(MockResolver.chain_id().await.unwrap()))
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_gas_limit_variable() {
+    async fn resolver_can_resolve_gas_limit_variable() {
         // Arrange
         let input = "$GAS_LIMIT";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            U256::from(MockResolver.block_gas_limit(Default::default()).unwrap())
+            U256::from(
+                MockResolver
+                    .block_gas_limit(Default::default())
+                    .await
+                    .unwrap()
+            )
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_coinbase_variable() {
+    async fn resolver_can_resolve_coinbase_variable() {
         // Arrange
         let input = "$COINBASE";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
@@ -909,163 +985,192 @@ mod tests {
             U256::from_be_slice(
                 MockResolver
                     .block_coinbase(Default::default())
+                    .await
                     .unwrap()
                     .as_ref()
             )
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_block_difficulty_variable() {
+    async fn resolver_can_resolve_block_difficulty_variable() {
         // Arrange
         let input = "$DIFFICULTY";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            MockResolver.block_difficulty(Default::default()).unwrap()
+            MockResolver
+                .block_difficulty(Default::default())
+                .await
+                .unwrap()
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_block_hash_variable() {
+    async fn resolver_can_resolve_block_base_fee_variable() {
+        // Arrange
+        let input = "$BASE_FEE";
+
+        // Act
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
+
+        // Assert
+        let resolved = resolved.expect("Failed to resolve argument");
+        assert_eq!(
+            resolved,
+            MockResolver
+                .block_base_fee(Default::default())
+                .await
+                .map(U256::from)
+                .unwrap()
+        )
+    }
+
+    #[tokio::test]
+    async fn resolver_can_resolve_block_hash_variable() {
         // Arrange
         let input = "$BLOCK_HASH";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            U256::from_be_bytes(MockResolver.block_hash(Default::default()).unwrap().0)
+            U256::from_be_bytes(MockResolver.block_hash(Default::default()).await.unwrap().0)
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_block_number_variable() {
+    async fn resolver_can_resolve_block_number_variable() {
         // Arrange
         let input = "$BLOCK_NUMBER";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            U256::from(MockResolver.last_block_number().unwrap())
+            U256::from(MockResolver.last_block_number().await.unwrap())
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn resolver_can_resolve_block_timestamp_variable() {
+    async fn resolver_can_resolve_block_timestamp_variable() {
         // Arrange
         let input = "$BLOCK_TIMESTAMP";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            U256::from(MockResolver.block_timestamp(Default::default()).unwrap())
+            U256::from(
+                MockResolver
+                    .block_timestamp(Default::default())
+                    .await
+                    .unwrap()
+            )
         )
     }
 
-    #[test]
+    #[tokio::test]
-    fn simple_addition_can_be_resolved() {
+    async fn simple_addition_can_be_resolved() {
         // Arrange
         let input = "2 4 +";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(resolved, U256::from(6));
     }
 
-    #[test]
+    #[tokio::test]
-    fn simple_subtraction_can_be_resolved() {
+    async fn simple_subtraction_can_be_resolved() {
         // Arrange
         let input = "4 2 -";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(resolved, U256::from(2));
     }
 
-    #[test]
+    #[tokio::test]
-    fn simple_multiplication_can_be_resolved() {
+    async fn simple_multiplication_can_be_resolved() {
         // Arrange
         let input = "4 2 *";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(resolved, U256::from(8));
     }
 
-    #[test]
+    #[tokio::test]
-    fn simple_division_can_be_resolved() {
+    async fn simple_division_can_be_resolved() {
         // Arrange
         let input = "4 2 /";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(resolved, U256::from(2));
     }
 
-    #[test]
+    #[tokio::test]
-    fn arithmetic_errors_are_not_panics() {
+    async fn arithmetic_errors_are_not_panics() {
         // Arrange
         let input = "4 0 /";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         assert!(resolved.is_err())
     }
 
-    #[test]
+    #[tokio::test]
-    fn arithmetic_with_resolution_works() {
+    async fn arithmetic_with_resolution_works() {
         // Arrange
         let input = "$BLOCK_NUMBER 10 +";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         let resolved = resolved.expect("Failed to resolve argument");
         assert_eq!(
             resolved,
-            U256::from(MockResolver.last_block_number().unwrap() + 10)
+            U256::from(MockResolver.last_block_number().await.unwrap() + 10)
         );
     }
 
-    #[test]
+    #[tokio::test]
-    fn incorrect_number_of_arguments_errors() {
+    async fn incorrect_number_of_arguments_errors() {
         // Arrange
         let input = "$BLOCK_NUMBER 10 + +";
 
         // Act
-        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver);
+        let resolved = resolve_calldata_item(input, &Default::default(), &MockResolver).await;
 
         // Assert
         assert!(resolved.is_err())

crates/format/src/metadata.rs

@@ -1,7 +1,8 @@
 use std::{
+    cmp::Ordering,
     collections::BTreeMap,
     fmt::Display,
-    fs::{File, read_to_string},
+    fs::File,
     ops::Deref,
     path::{Path, PathBuf},
     str::FromStr,
@@ -9,13 +10,14 @@ use std::{
 
 use serde::{Deserialize, Serialize};
 
-use revive_dt_common::{iterators::FilesWithExtensionIterator, macros::define_wrapper_type};
+use revive_common::EVMVersion;
-
+use revive_dt_common::{
-use crate::{
+    cached_fs::read_to_string, iterators::FilesWithExtensionIterator, macros::define_wrapper_type,
-    case::Case,
+    types::Mode,
-    mode::{Mode, SolcMode},
 };
 
+use crate::{case::Case, mode::ParsedMode};
+
 pub const METADATA_FILE_EXTENSION: &str = "json";
 pub const SOLIDITY_CASE_FILE_EXTENSION: &str = "sol";
 pub const SOLIDITY_CASE_COMMENT_MARKER: &str = "//!";
@@ -43,34 +45,51 @@ impl Deref for MetadataFile {
     }
 }
 
-#[derive(Debug, Default, Deserialize, Clone, Eq, PartialEq)]
+#[derive(Debug, Default, Serialize, Deserialize, Clone, Eq, PartialEq)]
 pub struct Metadata {
-    pub targets: Option<Vec<String>>,
+    /// A comment on the test case that's added for human-readability.
-    pub cases: Vec<Case>,
+    #[serde(skip_serializing_if = "Option::is_none")]
-    pub contracts: Option<BTreeMap<ContractInstance, ContractPathAndIdent>>,
+    pub comment: Option<String>,
-    // TODO: Convert into wrapper types for clarity.
+
-    pub libraries: Option<BTreeMap<PathBuf, BTreeMap<ContractIdent, ContractInstance>>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub ignore: Option<bool>,
-    pub modes: Option<Vec<Mode>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub targets: Option<Vec<String>>,
+
+    pub cases: Vec<Case>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub contracts: Option<BTreeMap<ContractInstance, ContractPathAndIdent>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub libraries: Option<BTreeMap<PathBuf, BTreeMap<ContractIdent, ContractInstance>>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub modes: Option<Vec<ParsedMode>>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub file_path: Option<PathBuf>,
+
+    /// This field specifies an EVM version requirement that the test case has where the test might
+    /// be run of the evm version of the nodes match the evm version specified here.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub required_evm_version: Option<EvmVersionRequirement>,
+
+    /// A set of compilation directives that will be passed to the compiler whenever the contracts for
+    /// the test are being compiled. Note that this differs from the [`Mode`]s in that a [`Mode`] is
+    /// just a filter for when a test can run whereas this is an instruction to the compiler.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub compiler_directives: Option<CompilationDirectives>,
 }
 
 impl Metadata {
-    /// Returns the solc modes of this metadata, inserting a default mode if not present.
+    /// Returns the modes that we should test from this metadata.
-    pub fn solc_modes(&self) -> Vec<SolcMode> {
+    pub fn solc_modes(&self) -> Vec<Mode> {
-        self.modes
+        match &self.modes {
-            .to_owned()
+            Some(modes) => ParsedMode::many_to_modes(modes.iter()).collect(),
-            .unwrap_or_else(|| vec![Mode::Solidity(Default::default())])
+            None => Mode::all().collect(),
-            .iter()
+        }
-            .filter_map(|mode| match mode {
-                Mode::Solidity(solc_mode) => Some(solc_mode),
-                Mode::Unknown(mode) => {
-                    tracing::debug!("compiler: ignoring unknown mode '{mode}'");
-                    None
-                }
-            })
-            .cloned()
-            .collect()
     }
 
     /// Returns the base directory of this metadata.
@@ -231,7 +250,9 @@ impl Metadata {
             Ok(Box::new(std::iter::once(metadata_file_path.clone())))
         } else {
             Ok(Box::new(
-                FilesWithExtensionIterator::new(self.directory()?).with_allowed_extension("sol"),
+                FilesWithExtensionIterator::new(self.directory()?)
+                    .with_allowed_extension("sol")
+                    .with_use_cached_fs(true),
             ))
         }
     }
@@ -310,16 +331,22 @@ impl FromStr for ContractPathAndIdent {
                 identifier = Some(next_item.to_owned())
             }
         }
-        let Some(path) = path else {
+        match (path, identifier) {
-            anyhow::bail!("Path is not defined");
+            (Some(path), Some(identifier)) => Ok(Self {
-        };
+                contract_source_path: PathBuf::from(path),
-        let Some(identifier) = identifier else {
+                contract_ident: ContractIdent::new(identifier),
-            anyhow::bail!("Contract identifier is not defined")
+            }),
-        };
+            (None, Some(path)) | (Some(path), None) => {
-        Ok(Self {
+                let Some(identifier) = path.split(".").next().map(ToOwned::to_owned) else {
-            contract_source_path: PathBuf::from(path),
+                    anyhow::bail!("Failed to find identifier");
-            contract_ident: ContractIdent::new(identifier),
+                };
-        })
+                Ok(Self {
+                    contract_source_path: PathBuf::from(path),
+                    contract_ident: ContractIdent::new(identifier),
+                })
+            }
+            (None, None) => anyhow::bail!("Failed to find the path and identifier"),
+        }
     }
 }
 
@@ -337,6 +364,156 @@ impl From<ContractPathAndIdent> for String {
     }
 }
 
+/// An EVM version requirement that the test case has. This gets serialized and
+/// deserialized from and into [`String`].
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
+#[serde(try_from = "String", into = "String")]
+pub struct EvmVersionRequirement {
+    ordering: Ordering,
+    or_equal: bool,
+    evm_version: EVMVersion,
+}
+
+impl EvmVersionRequirement {
+    pub fn new_greater_than_or_equals(version: EVMVersion) -> Self {
+        Self {
+            ordering: Ordering::Greater,
+            or_equal: true,
+            evm_version: version,
+        }
+    }
+
+    pub fn new_greater_than(version: EVMVersion) -> Self {
+        Self {
+            ordering: Ordering::Greater,
+            or_equal: false,
+            evm_version: version,
+        }
+    }
+
+    pub fn new_equals(version: EVMVersion) -> Self {
+        Self {
+            ordering: Ordering::Equal,
+            or_equal: false,
+            evm_version: version,
+        }
+    }
+
+    pub fn new_less_than(version: EVMVersion) -> Self {
+        Self {
+            ordering: Ordering::Less,
+            or_equal: false,
+            evm_version: version,
+        }
+    }
+
+    pub fn new_less_than_or_equals(version: EVMVersion) -> Self {
+        Self {
+            ordering: Ordering::Less,
+            or_equal: true,
+            evm_version: version,
+        }
+    }
+
+    pub fn matches(&self, other: &EVMVersion) -> bool {
+        let ordering = other.cmp(&self.evm_version);
+        ordering == self.ordering || (self.or_equal && matches!(ordering, Ordering::Equal))
+    }
+}
+
+impl Display for EvmVersionRequirement {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let Self {
+            ordering,
+            or_equal,
+            evm_version,
+        } = self;
+        match ordering {
+            Ordering::Less => write!(f, "<")?,
+            Ordering::Equal => write!(f, "=")?,
+            Ordering::Greater => write!(f, ">")?,
+        }
+        if *or_equal && !matches!(ordering, Ordering::Equal) {
+            write!(f, "=")?;
+        }
+        write!(f, "{evm_version}")
+    }
+}
+
+impl FromStr for EvmVersionRequirement {
+    type Err = anyhow::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.as_bytes() {
+            [b'>', b'=', remaining @ ..] => Ok(Self {
+                ordering: Ordering::Greater,
+                or_equal: true,
+                evm_version: str::from_utf8(remaining)?.try_into()?,
+            }),
+            [b'>', remaining @ ..] => Ok(Self {
+                ordering: Ordering::Greater,
+                or_equal: false,
+                evm_version: str::from_utf8(remaining)?.try_into()?,
+            }),
+            [b'<', b'=', remaining @ ..] => Ok(Self {
+                ordering: Ordering::Less,
+                or_equal: true,
+                evm_version: str::from_utf8(remaining)?.try_into()?,
+            }),
+            [b'<', remaining @ ..] => Ok(Self {
+                ordering: Ordering::Less,
+                or_equal: false,
+                evm_version: str::from_utf8(remaining)?.try_into()?,
+            }),
+            [b'=', remaining @ ..] => Ok(Self {
+                ordering: Ordering::Equal,
+                or_equal: false,
+                evm_version: str::from_utf8(remaining)?.try_into()?,
+            }),
+            _ => anyhow::bail!("Invalid EVM version requirement {s}"),
+        }
+    }
+}
+
+impl TryFrom<String> for EvmVersionRequirement {
+    type Error = anyhow::Error;
+
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        value.parse()
+    }
+}
+
+impl From<EvmVersionRequirement> for String {
+    fn from(value: EvmVersionRequirement) -> Self {
+        value.to_string()
+    }
+}
+
+/// A set of compilation directives that will be passed to the compiler whenever the contracts for
+/// the test are being compiled. Note that this differs from the [`Mode`]s in that a [`Mode`] is
+/// just a filter for when a test can run whereas this is an instruction to the compiler.
+/// Defines how the compiler should handle revert strings.
+#[derive(
+    Clone, Debug, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Serialize, Deserialize,
+)]
+pub struct CompilationDirectives {
+    /// Defines how the revert strings should be handled.
+    pub revert_string_handling: Option<RevertString>,
+}
+
+/// Defines how the compiler should handle revert strings.
+#[derive(
+    Clone, Debug, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Serialize, Deserialize,
+)]
+#[serde(rename_all = "camelCase")]
+pub enum RevertString {
+    #[default]
+    Default,
+    Debug,
+    Strip,
+    VerboseDebug,
+}
+
 #[cfg(test)]
 mod test {
     use super::*;

crates/format/src/mode.rs

@@ -1,106 +1,262 @@
-use revive_dt_common::types::VersionOrRequirement;
+use regex::Regex;
-use semver::Version;
+use revive_dt_common::types::{Mode, ModeOptimizerSetting, ModePipeline};
-use serde::de::Deserializer;
 use serde::{Deserialize, Serialize};
+use std::collections::HashSet;
+use std::fmt::Display;
+use std::str::FromStr;
+use std::sync::LazyLock;
 
-/// Specifies the compilation mode of the test artifact.
+/// This represents a mode that has been parsed from test metadata.
-#[derive(Hash, Debug, Clone, Eq, PartialEq)]
+///
-pub enum Mode {
+/// Mode strings can take the following form (in pseudo-regex):
-    Solidity(SolcMode),
+///
-    Unknown(String),
+/// ```text
+/// [YEILV][+-]? (M[0123sz])? <semver>?
+/// ```
+///
+/// We can parse valid mode strings into [`ParsedMode`] using [`ParsedMode::from_str`].
+#[derive(Clone, Debug, PartialEq, Eq, Hash, Deserialize, Serialize)]
+#[serde(try_from = "String", into = "String")]
+pub struct ParsedMode {
+    pub pipeline: Option<ModePipeline>,
+    pub optimize_flag: Option<bool>,
+    pub optimize_setting: Option<ModeOptimizerSetting>,
+    pub version: Option<semver::VersionReq>,
 }
 
-/// Specify Solidity specific compiler options.
+impl FromStr for ParsedMode {
-#[derive(Hash, Debug, Default, Clone, Eq, PartialEq, Serialize, Deserialize)]
+    type Err = anyhow::Error;
-pub struct SolcMode {
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
-    pub solc_version: Option<semver::VersionReq>,
+        static REGEX: LazyLock<Regex> = LazyLock::new(|| {
-    solc_optimize: Option<bool>,
+            Regex::new(r"(?x)
-    pub llvm_optimizer_settings: Vec<String>,
+                ^
-}
+                (?:(?P<pipeline>[YEILV])(?P<optimize_flag>[+-])?)? # Pipeline to use eg Y, E+, E-
+                \s*
+                (?P<optimize_setting>M[a-zA-Z0-9])?                # Optimize setting eg M0, Ms, Mz
+                \s*
+                (?P<version>[>=<]*\d+(?:\.\d+)*)?                  # Optional semver version eg >=0.8.0, 0.7, <0.8
+                $
+            ").unwrap()
+        });
 
-impl SolcMode {
+        let Some(caps) = REGEX.captures(s) else {
-    /// Try to parse a mode string into a solc mode.
+            anyhow::bail!("Cannot parse mode '{s}' from string");
-    /// Returns `None` if the string wasn't a solc YUL mode string.
-    ///
-    /// The mode string is expected to start with the `Y` ID (YUL ID),
-    /// optionally followed by `+` or `-` for the solc optimizer settings.
-    ///
-    /// Options can be separated by a whitespace contain the following
-    /// - A solc `SemVer version requirement` string
-    /// - One or more `-OX` where X is a supposed to be an LLVM opt mode
-    pub fn parse_from_mode_string(mode_string: &str) -> Option<Self> {
-        let mut result = Self::default();
-
-        let mut parts = mode_string.trim().split(" ");
-
-        match parts.next()? {
-            "Y" => {}
-            "Y+" => result.solc_optimize = Some(true),
-            "Y-" => result.solc_optimize = Some(false),
-            _ => return None,
-        }
-
-        for part in parts {
-            if let Ok(solc_version) = semver::VersionReq::parse(part) {
-                result.solc_version = Some(solc_version);
-                continue;
-            }
-            if let Some(level) = part.strip_prefix("-O") {
-                result.llvm_optimizer_settings.push(level.to_string());
-                continue;
-            }
-            panic!("the YUL mode string {mode_string} failed to parse, invalid part: {part}")
-        }
-
-        Some(result)
-    }
-
-    /// Returns whether to enable the solc optimizer.
-    pub fn solc_optimize(&self) -> bool {
-        self.solc_optimize.unwrap_or(true)
-    }
-
-    /// Calculate the latest matching solc patch version. Returns:
-    /// - `latest_supported` if no version request was specified.
-    /// - A matching version with the same minor version as `latest_supported`, if any.
-    /// - `None` if no minor version of the `latest_supported` version matches.
-    pub fn last_patch_version(&self, latest_supported: &Version) -> Option<Version> {
-        let Some(version_req) = self.solc_version.as_ref() else {
-            return Some(latest_supported.to_owned());
         };
 
-        // lgtm
+        let pipeline = match caps.name("pipeline") {
-        for patch in (0..latest_supported.patch + 1).rev() {
+            Some(m) => Some(ModePipeline::from_str(m.as_str())?),
-            let version = Version::new(0, latest_supported.minor, patch);
+            None => None,
-            if version_req.matches(&version) {
+        };
-                return Some(version);
+
+        let optimize_flag = caps.name("optimize_flag").map(|m| m.as_str() == "+");
+
+        let optimize_setting = match caps.name("optimize_setting") {
+            Some(m) => Some(ModeOptimizerSetting::from_str(m.as_str())?),
+            None => None,
+        };
+
+        let version = match caps.name("version") {
+            Some(m) => Some(semver::VersionReq::parse(m.as_str()).map_err(|e| {
+                anyhow::anyhow!("Cannot parse the version requirement '{}': {e}", m.as_str())
+            })?),
+            None => None,
+        };
+
+        Ok(ParsedMode {
+            pipeline,
+            optimize_flag,
+            optimize_setting,
+            version,
+        })
+    }
+}
+
+impl Display for ParsedMode {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let mut has_written = false;
+
+        if let Some(pipeline) = self.pipeline {
+            pipeline.fmt(f)?;
+            if let Some(optimize_flag) = self.optimize_flag {
+                f.write_str(if optimize_flag { "+" } else { "-" })?;
             }
+            has_written = true;
         }
 
-        None
+        if let Some(optimize_setting) = self.optimize_setting {
+            if has_written {
+                f.write_str(" ")?;
+            }
+            optimize_setting.fmt(f)?;
+            has_written = true;
+        }
+
+        if let Some(version) = &self.version {
+            if has_written {
+                f.write_str(" ")?;
+            }
+            version.fmt(f)?;
+        }
+
+        Ok(())
+    }
+}
+
+impl From<ParsedMode> for String {
+    fn from(parsed_mode: ParsedMode) -> Self {
+        parsed_mode.to_string()
+    }
+}
+
+impl TryFrom<String> for ParsedMode {
+    type Error = anyhow::Error;
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        ParsedMode::from_str(&value)
+    }
+}
+
+impl ParsedMode {
+    /// This takes a [`ParsedMode`] and expands it into a list of [`Mode`]s that we should try.
+    pub fn to_modes(&self) -> impl Iterator<Item = Mode> {
+        let pipeline_iter = self.pipeline.as_ref().map_or_else(
+            || EitherIter::A(ModePipeline::test_cases()),
+            |p| EitherIter::B(std::iter::once(*p)),
+        );
+
+        let optimize_flag_setting = self.optimize_flag.map(|flag| {
+            if flag {
+                ModeOptimizerSetting::M3
+            } else {
+                ModeOptimizerSetting::M0
+            }
+        });
+
+        let optimize_flag_iter = match optimize_flag_setting {
+            Some(setting) => EitherIter::A(std::iter::once(setting)),
+            None => EitherIter::B(ModeOptimizerSetting::test_cases()),
+        };
+
+        let optimize_settings_iter = self.optimize_setting.as_ref().map_or_else(
+            || EitherIter::A(optimize_flag_iter),
+            |s| EitherIter::B(std::iter::once(*s)),
+        );
+
+        pipeline_iter.flat_map(move |pipeline| {
+            optimize_settings_iter
+                .clone()
+                .map(move |optimize_setting| Mode {
+                    pipeline,
+                    optimize_setting,
+                    version: self.version.clone(),
+                })
+        })
     }
 
-    /// Resolves the [`SolcMode`]'s solidity version requirement into a [`VersionOrRequirement`] if
+    /// Return a set of [`Mode`]s that correspond to the given [`ParsedMode`]s.
-    /// the requirement is present on the object. Otherwise, the passed default version is used.
+    /// This avoids any duplicate entries.
-    pub fn compiler_version_to_use(&self, default: Version) -> VersionOrRequirement {
+    pub fn many_to_modes<'a>(
-        match self.solc_version {
+        parsed: impl Iterator<Item = &'a ParsedMode>,
-            Some(ref requirement) => requirement.clone().into(),
+    ) -> impl Iterator<Item = Mode> {
-            None => default.into(),
+        let modes: HashSet<_> = parsed.flat_map(|p| p.to_modes()).collect();
+        modes.into_iter()
+    }
+}
+
+/// An iterator that could be either of two iterators.
+#[derive(Clone, Debug)]
+enum EitherIter<A, B> {
+    A(A),
+    B(B),
+}
+
+impl<A, B> Iterator for EitherIter<A, B>
+where
+    A: Iterator,
+    B: Iterator<Item = A::Item>,
+{
+    type Item = A::Item;
+    fn next(&mut self) -> Option<Self::Item> {
+        match self {
+            EitherIter::A(iter) => iter.next(),
+            EitherIter::B(iter) => iter.next(),
         }
     }
 }
 
-impl<'de> Deserialize<'de> for Mode {
+#[cfg(test)]
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+mod tests {
-    where
+    use super::*;
-        D: Deserializer<'de>,
-    {
-        let mode_string = String::deserialize(deserializer)?;
 
-        if let Some(solc_mode) = SolcMode::parse_from_mode_string(&mode_string) {
+    #[test]
-            return Ok(Self::Solidity(solc_mode));
+    fn test_parsed_mode_from_str() {
+        let strings = vec![
+            ("Mz", "Mz"),
+            ("Y", "Y"),
+            ("Y+", "Y+"),
+            ("Y-", "Y-"),
+            ("E", "E"),
+            ("E+", "E+"),
+            ("E-", "E-"),
+            ("Y M0", "Y M0"),
+            ("Y M1", "Y M1"),
+            ("Y M2", "Y M2"),
+            ("Y M3", "Y M3"),
+            ("Y Ms", "Y Ms"),
+            ("Y Mz", "Y Mz"),
+            ("E M0", "E M0"),
+            ("E M1", "E M1"),
+            ("E M2", "E M2"),
+            ("E M3", "E M3"),
+            ("E Ms", "E Ms"),
+            ("E Mz", "E Mz"),
+            // When stringifying semver again, 0.8.0 becomes ^0.8.0 (same meaning)
+            ("Y 0.8.0", "Y ^0.8.0"),
+            ("E+ 0.8.0", "E+ ^0.8.0"),
+            ("Y M3 >=0.8.0", "Y M3 >=0.8.0"),
+            ("E Mz <0.7.0", "E Mz <0.7.0"),
+            // We can parse +- _and_ M1/M2 but the latter takes priority.
+            ("Y+ M1 0.8.0", "Y+ M1 ^0.8.0"),
+            ("E- M2 0.7.0", "E- M2 ^0.7.0"),
+            // We don't see this in the wild but it is parsed.
+            ("<=0.8", "<=0.8"),
+        ];
+
+        for (actual, expected) in strings {
+            let parsed = ParsedMode::from_str(actual)
+                .expect(format!("Failed to parse mode string '{actual}'").as_str());
+            assert_eq!(
+                expected,
+                parsed.to_string(),
+                "Mode string '{actual}' did not parse to '{expected}': got '{parsed}'"
+            );
         }
+    }
 
-        Ok(Self::Unknown(mode_string))
+    #[test]
+    fn test_parsed_mode_to_test_modes() {
+        let strings = vec![
+            ("Mz", vec!["Y Mz", "E Mz"]),
+            ("Y", vec!["Y M0", "Y M3"]),
+            ("E", vec!["E M0", "E M3"]),
+            ("Y+", vec!["Y M3"]),
+            ("Y-", vec!["Y M0"]),
+            ("Y <=0.8", vec!["Y M0 <=0.8", "Y M3 <=0.8"]),
+            (
+                "<=0.8",
+                vec!["Y M0 <=0.8", "Y M3 <=0.8", "E M0 <=0.8", "E M3 <=0.8"],
+            ),
+        ];
+
+        for (actual, expected) in strings {
+            let parsed = ParsedMode::from_str(actual)
+                .expect(format!("Failed to parse mode string '{actual}'").as_str());
+            let expected_set: HashSet<_> = expected.into_iter().map(|s| s.to_owned()).collect();
+            let actual_set: HashSet<_> = parsed.to_modes().map(|m| m.to_string()).collect();
+
+            assert_eq!(
+                expected_set, actual_set,
+                "Mode string '{actual}' did not expand to '{expected_set:?}': got '{actual_set:?}'"
+            );
+        }
     }
 }

crates/format/src/traits.rs

@@ -1,30 +1,157 @@
+use std::collections::HashMap;
+
 use alloy::eips::BlockNumberOrTag;
+use alloy::json_abi::JsonAbi;
 use alloy::primitives::{Address, BlockHash, BlockNumber, BlockTimestamp, ChainId, U256};
+use alloy_primitives::TxHash;
 use anyhow::Result;
 
+use crate::metadata::{ContractIdent, ContractInstance};
+
 /// A trait of the interface are required to implement to be used by the resolution logic that this
 /// crate implements to go from string calldata and into the bytes calldata.
 pub trait ResolverApi {
     /// Returns the ID of the chain that the node is on.
-    fn chain_id(&self) -> Result<ChainId>;
+    fn chain_id(&self) -> impl Future<Output = Result<ChainId>>;
+
+    /// Returns the gas price for the specified transaction.
+    fn transaction_gas_price(&self, tx_hash: &TxHash) -> impl Future<Output = Result<u128>>;
 
     // TODO: This is currently a u128 due to Kitchensink needing more than 64 bits for its gas limit
     // when we implement the changes to the gas we need to adjust this to be a u64.
     /// Returns the gas limit of the specified block.
-    fn block_gas_limit(&self, number: BlockNumberOrTag) -> Result<u128>;
+    fn block_gas_limit(&self, number: BlockNumberOrTag) -> impl Future<Output = Result<u128>>;
 
     /// Returns the coinbase of the specified block.
-    fn block_coinbase(&self, number: BlockNumberOrTag) -> Result<Address>;
+    fn block_coinbase(&self, number: BlockNumberOrTag) -> impl Future<Output = Result<Address>>;
 
     /// Returns the difficulty of the specified block.
-    fn block_difficulty(&self, number: BlockNumberOrTag) -> Result<U256>;
+    fn block_difficulty(&self, number: BlockNumberOrTag) -> impl Future<Output = Result<U256>>;
+
+    /// Returns the base fee of the specified block.
+    fn block_base_fee(&self, number: BlockNumberOrTag) -> impl Future<Output = Result<u64>>;
 
     /// Returns the hash of the specified block.
-    fn block_hash(&self, number: BlockNumberOrTag) -> Result<BlockHash>;
+    fn block_hash(&self, number: BlockNumberOrTag) -> impl Future<Output = Result<BlockHash>>;
 
     /// Returns the timestamp of the specified block,
-    fn block_timestamp(&self, number: BlockNumberOrTag) -> Result<BlockTimestamp>;
+    fn block_timestamp(
+        &self,
+        number: BlockNumberOrTag,
+    ) -> impl Future<Output = Result<BlockTimestamp>>;
 
     /// Returns the number of the last block.
-    fn last_block_number(&self) -> Result<BlockNumber>;
+    fn last_block_number(&self) -> impl Future<Output = Result<BlockNumber>>;
+}
+
+#[derive(Clone, Copy, Debug, Default)]
+/// Contextual information required by the code that's performing the resolution.
+pub struct ResolutionContext<'a> {
+    /// When provided the contracts provided here will be used for resolutions.
+    deployed_contracts: Option<&'a HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>>,
+
+    /// When provided the variables in here will be used for performing resolutions.
+    variables: Option<&'a HashMap<String, U256>>,
+
+    /// When provided this block number will be treated as the tip of the chain.
+    block_number: Option<&'a BlockNumber>,
+
+    /// When provided the resolver will use this transaction hash for all of its resolutions.
+    transaction_hash: Option<&'a TxHash>,
+}
+
+impl<'a> ResolutionContext<'a> {
+    pub fn new() -> Self {
+        Default::default()
+    }
+
+    pub fn new_from_parts(
+        deployed_contracts: impl Into<
+            Option<&'a HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>>,
+        >,
+        variables: impl Into<Option<&'a HashMap<String, U256>>>,
+        block_number: impl Into<Option<&'a BlockNumber>>,
+        transaction_hash: impl Into<Option<&'a TxHash>>,
+    ) -> Self {
+        Self {
+            deployed_contracts: deployed_contracts.into(),
+            variables: variables.into(),
+            block_number: block_number.into(),
+            transaction_hash: transaction_hash.into(),
+        }
+    }
+
+    pub fn with_deployed_contracts(
+        mut self,
+        deployed_contracts: impl Into<
+            Option<&'a HashMap<ContractInstance, (ContractIdent, Address, JsonAbi)>>,
+        >,
+    ) -> Self {
+        self.deployed_contracts = deployed_contracts.into();
+        self
+    }
+
+    pub fn with_variables(
+        mut self,
+        variables: impl Into<Option<&'a HashMap<String, U256>>>,
+    ) -> Self {
+        self.variables = variables.into();
+        self
+    }
+
+    pub fn with_block_number(mut self, block_number: impl Into<Option<&'a BlockNumber>>) -> Self {
+        self.block_number = block_number.into();
+        self
+    }
+
+    pub fn with_transaction_hash(
+        mut self,
+        transaction_hash: impl Into<Option<&'a TxHash>>,
+    ) -> Self {
+        self.transaction_hash = transaction_hash.into();
+        self
+    }
+
+    pub fn resolve_block_number(&self, number: BlockNumberOrTag) -> BlockNumberOrTag {
+        match self.block_number {
+            Some(block_number) => match number {
+                BlockNumberOrTag::Latest => BlockNumberOrTag::Number(*block_number),
+                n @ (BlockNumberOrTag::Finalized
+                | BlockNumberOrTag::Safe
+                | BlockNumberOrTag::Earliest
+                | BlockNumberOrTag::Pending
+                | BlockNumberOrTag::Number(_)) => n,
+            },
+            None => number,
+        }
+    }
+
+    pub fn deployed_contract(
+        &self,
+        instance: &ContractInstance,
+    ) -> Option<&(ContractIdent, Address, JsonAbi)> {
+        self.deployed_contracts
+            .and_then(|deployed_contracts| deployed_contracts.get(instance))
+    }
+
+    pub fn deployed_contract_address(&self, instance: &ContractInstance) -> Option<&Address> {
+        self.deployed_contract(instance).map(|(_, a, _)| a)
+    }
+
+    pub fn deployed_contract_abi(&self, instance: &ContractInstance) -> Option<&JsonAbi> {
+        self.deployed_contract(instance).map(|(_, _, a)| a)
+    }
+
+    pub fn variable(&self, name: impl AsRef<str>) -> Option<&U256> {
+        self.variables
+            .and_then(|variables| variables.get(name.as_ref()))
+    }
+
+    pub fn tip_block_number(&self) -> Option<&'a BlockNumber> {
+        self.block_number
+    }
+
+    pub fn transaction_hash(&self) -> Option<&'a TxHash> {
+        self.transaction_hash
+    }
 }

crates/node-interaction/src/lib.rs

@@ -1,21 +1,35 @@
 //! This crate implements all node interactions.
 
+use alloy::primitives::{Address, StorageKey, U256};
 use alloy::rpc::types::trace::geth::{DiffMode, GethDebugTracingOptions, GethTrace};
-use alloy::rpc::types::{TransactionReceipt, TransactionRequest};
+use alloy::rpc::types::{EIP1186AccountProofResponse, TransactionReceipt, TransactionRequest};
 use anyhow::Result;
 
 /// An interface for all interactions with Ethereum compatible nodes.
 pub trait EthereumNode {
     /// Execute the [TransactionRequest] and return a [TransactionReceipt].
-    fn execute_transaction(&self, transaction: TransactionRequest) -> Result<TransactionReceipt>;
+    fn execute_transaction(
+        &self,
+        transaction: TransactionRequest,
+    ) -> impl Future<Output = Result<TransactionReceipt>>;
 
     /// Trace the transaction in the [TransactionReceipt] and return a [GethTrace].
     fn trace_transaction(
         &self,
         receipt: &TransactionReceipt,
         trace_options: GethDebugTracingOptions,
-    ) -> Result<GethTrace>;
+    ) -> impl Future<Output = Result<GethTrace>>;
 
     /// Returns the state diff of the transaction hash in the [TransactionReceipt].
-    fn state_diff(&self, receipt: &TransactionReceipt) -> Result<DiffMode>;
+    fn state_diff(&self, receipt: &TransactionReceipt) -> impl Future<Output = Result<DiffMode>>;
+
+    /// Returns the balance of the provided [`Address`] back.
+    fn balance_of(&self, address: Address) -> impl Future<Output = Result<U256>>;
+
+    /// Returns the latest storage proof of the provided [`Address`]
+    fn latest_state_proof(
+        &self,
+        address: Address,
+        keys: Vec<StorageKey>,
+    ) -> impl Future<Output = Result<EIP1186AccountProofResponse>>;
 }

crates/node/Cargo.toml

@@ -14,6 +14,7 @@ alloy = { workspace = true }
 tracing = { workspace = true }
 tokio = { workspace = true }
 
+revive-common = { workspace = true }
 revive-dt-common = { workspace = true }
 revive-dt-config = { workspace = true }
 revive-dt-format = { workspace = true }

crates/node/src/geth.rs

@@ -3,9 +3,13 @@
 use std::{
     fs::{File, OpenOptions, create_dir_all, remove_dir_all},
     io::{BufRead, BufReader, Read, Write},
+    ops::ControlFlow,
     path::PathBuf,
     process::{Child, Command, Stdio},
-    sync::atomic::{AtomicU32, Ordering},
+    sync::{
+        Arc,
+        atomic::{AtomicU32, Ordering},
+    },
     time::{Duration, Instant},
 };
 
@@ -13,23 +17,28 @@ use alloy::{
     eips::BlockNumberOrTag,
     genesis::{Genesis, GenesisAccount},
     network::{Ethereum, EthereumWallet, NetworkWallet},
-    primitives::{Address, BlockHash, BlockNumber, BlockTimestamp, FixedBytes, U256},
+    primitives::{
+        Address, BlockHash, BlockNumber, BlockTimestamp, FixedBytes, StorageKey, TxHash, U256,
+    },
     providers::{
         Provider, ProviderBuilder,
         ext::DebugApi,
         fillers::{CachedNonceManager, ChainIdFiller, FillProvider, NonceFiller, TxFiller},
     },
     rpc::types::{
-        TransactionReceipt, TransactionRequest,
+        EIP1186AccountProofResponse, TransactionReceipt, TransactionRequest,
         trace::geth::{DiffMode, GethDebugTracingOptions, PreStateConfig, PreStateFrame},
     },
     signers::local::PrivateKeySigner,
 };
-use revive_dt_common::concepts::BlockingExecutor;
+use anyhow::Context;
+use revive_common::EVMVersion;
+use tracing::{Instrument, Level};
+
+use revive_dt_common::{fs::clear_directory, futures::poll};
 use revive_dt_config::Arguments;
 use revive_dt_format::traits::ResolverApi;
 use revive_dt_node_interaction::EthereumNode;
-use tracing::Level;
 
 use crate::{Node, common::FallbackGasFiller, constants::INITIAL_BALANCE};
 
@@ -43,7 +52,7 @@ static NODE_COUNT: AtomicU32 = AtomicU32::new(0);
 ///
 /// Prunes the child process and the base directory on drop.
 #[derive(Debug)]
-pub struct Instance {
+pub struct GethNode {
     connection_string: String,
     base_directory: PathBuf,
     data_directory: PathBuf,
@@ -51,7 +60,6 @@ pub struct Instance {
     geth: PathBuf,
     id: u32,
     handle: Option<Child>,
-    network_id: u64,
     start_timeout: u64,
     wallet: EthereumWallet,
     nonce_manager: CachedNonceManager,
@@ -62,7 +70,7 @@ pub struct Instance {
     logs_file_to_flush: Vec<File>,
 }
 
-impl Instance {
+impl GethNode {
     const BASE_DIRECTORY: &str = "geth";
     const DATA_DIRECTORY: &str = "data";
     const LOGS_DIRECTORY: &str = "logs";
@@ -77,10 +85,17 @@ impl Instance {
     const GETH_STDERR_LOG_FILE_NAME: &str = "node_stderr.log";
 
     const TRANSACTION_INDEXING_ERROR: &str = "transaction indexing is in progress";
+    const TRANSACTION_TRACING_ERROR: &str = "historical state not available in path scheme yet";
+
+    const RECEIPT_POLLING_DURATION: Duration = Duration::from_secs(5 * 60);
+    const TRACE_POLLING_DURATION: Duration = Duration::from_secs(60);
 
     /// Create the node directory and call `geth init` to configure the genesis.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn init(&mut self, genesis: String) -> anyhow::Result<&mut Self> {
+        let _ = clear_directory(&self.base_directory);
+        let _ = clear_directory(&self.logs_directory);
+
         create_dir_all(&self.base_directory)?;
         create_dir_all(&self.logs_directory)?;
 
@@ -99,6 +114,8 @@ impl Instance {
         serde_json::to_writer(File::create(&genesis_path)?, &genesis)?;
 
         let mut child = Command::new(&self.geth)
+            .arg("--state.scheme")
+            .arg("hash")
             .arg("init")
             .arg("--datadir")
             .arg(&self.data_directory)
@@ -124,7 +141,7 @@ impl Instance {
     /// Spawn the go-ethereum node child process.
     ///
     /// [Instance::init] must be called prior.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn spawn_process(&mut self) -> anyhow::Result<&mut Self> {
         // This is the `OpenOptions` that we wish to use for all of the log files that we will be
         // opening in this method. We need to construct it in this way to:
@@ -147,8 +164,6 @@ impl Instance {
             .arg(&self.data_directory)
             .arg("--ipcpath")
             .arg(&self.connection_string)
-            .arg("--networkid")
-            .arg(self.network_id.to_string())
             .arg("--nodiscover")
             .arg("--maxpeers")
             .arg("0")
@@ -156,6 +171,12 @@ impl Instance {
             .arg("0")
             .arg("--cache.blocklogs")
             .arg("512")
+            .arg("--state.scheme")
+            .arg("hash")
+            .arg("--syncmode")
+            .arg("full")
+            .arg("--gcmode")
+            .arg("archive")
             .stderr(stderr_logs_file.try_clone()?)
             .stdout(stdout_logs_file.try_clone()?)
             .spawn()?
@@ -176,7 +197,7 @@ impl Instance {
     /// Wait for the g-ethereum node child process getting ready.
     ///
     /// [Instance::spawn_process] must be called priorly.
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn wait_ready(&mut self) -> anyhow::Result<&mut Self> {
         let start_time = Instant::now();
 
@@ -189,6 +210,7 @@ impl Instance {
 
         let maximum_wait_time = Duration::from_millis(self.start_timeout);
         let mut stderr = BufReader::new(logs_file).lines();
+        let mut lines = vec![];
         loop {
             if let Some(Ok(line)) = stderr.next() {
                 if line.contains(Self::ERROR_MARKER) {
@@ -197,9 +219,14 @@ impl Instance {
                 if line.contains(Self::READY_MARKER) {
                     return Ok(self);
                 }
+                lines.push(line);
             }
             if Instant::now().duration_since(start_time) > maximum_wait_time {
-                anyhow::bail!("Timeout in starting geth");
+                anyhow::bail!(
+                    "Timeout in starting geth: took longer than {}ms. stdout:\n\n{}\n",
+                    self.start_timeout,
+                    lines.join("\n")
+                );
             }
         }
     }
@@ -233,7 +260,11 @@ impl Instance {
         Box::pin(async move {
             ProviderBuilder::new()
                 .disable_recommended_fillers()
-                .filler(FallbackGasFiller::new(500_000_000, 500_000_000, 1))
+                .filler(FallbackGasFiller::new(
+                    25_000_000,
+                    1_000_000_000,
+                    1_000_000_000,
+                ))
                 .filler(ChainIdFiller::default())
                 .filler(NonceFiller::new(nonce_manager))
                 .wallet(wallet)
@@ -244,200 +275,230 @@ impl Instance {
     }
 }
 
-impl EthereumNode for Instance {
+impl EthereumNode for GethNode {
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
-    fn execute_transaction(
+    async fn execute_transaction(
         &self,
         transaction: TransactionRequest,
     ) -> anyhow::Result<alloy::rpc::types::TransactionReceipt> {
-        let provider = self.provider();
+        let provider = Arc::new(self.provider().await?);
-        BlockingExecutor::execute(async move {
+        let transaction_hash = *provider.send_transaction(transaction).await?.tx_hash();
-            let outer_span = tracing::debug_span!("Submitting transaction", ?transaction);
-            let _outer_guard = outer_span.enter();
 
-            let provider = provider.await?;
+        // The following is a fix for the "transaction indexing is in progress" error that we
-
+        // used to get. You can find more information on this in the following GH issue in geth
-            let pending_transaction = provider.send_transaction(transaction).await?;
+        // https://github.com/ethereum/go-ethereum/issues/28877. To summarize what's going on,
-            let transaction_hash = pending_transaction.tx_hash();
+        // before we can get the receipt of the transaction it needs to have been indexed by the
-
+        // node's indexer. Just because the transaction has been confirmed it doesn't mean that
-            let span = tracing::info_span!("Awaiting transaction receipt", ?transaction_hash);
+        // it has been indexed. When we call alloy's `get_receipt` it checks if the transaction
-            let _guard = span.enter();
+        // was confirmed. If it has been, then it will call `eth_getTransactionReceipt` method
-
+        // which _might_ return the above error if the tx has not yet been indexed yet. So, we
-            // The following is a fix for the "transaction indexing is in progress" error that we
+        // need to implement a retry mechanism for the receipt to keep retrying to get it until
-            // used to get. You can find more information on this in the following GH issue in geth
+        // it eventually works, but we only do that if the error we get back is the "transaction
-            // https://github.com/ethereum/go-ethereum/issues/28877. To summarize what's going on,
+        // indexing is in progress" error or if the receipt is None.
-            // before we can get the receipt of the transaction it needs to have been indexed by the
+        //
-            // node's indexer. Just because the transaction has been confirmed it doesn't mean that
+        // Getting the transaction indexed and taking a receipt can take a long time especially
-            // it has been indexed. When we call alloy's `get_receipt` it checks if the transaction
+        // when a lot of transactions are being submitted to the node. Thus, while initially we
-            // was confirmed. If it has been, then it will call `eth_getTransactionReceipt` method
+        // only allowed for 60 seconds of waiting with a 1 second delay in polling, we need to
-            // which _might_ return the above error if the tx has not yet been indexed yet. So, we
+        // allow for a larger wait time. Therefore, in here we allow for 5 minutes of waiting
-            // need to implement a retry mechanism for the receipt to keep retrying to get it until
+        // with exponential backoff each time we attempt to get the receipt and find that it's
-            // it eventually works, but we only do that if the error we get back is the "transaction
+        // not available.
-            // indexing is in progress" error or if the receipt is None.
+        poll(
-            //
+            Self::RECEIPT_POLLING_DURATION,
-            // Getting the transaction indexed and taking a receipt can take a long time especially
+            Default::default(),
-            // when a lot of transactions are being submitted to the node. Thus, while initially we
+            move || {
-            // only allowed for 60 seconds of waiting with a 1 second delay in polling, we need to
+                let provider = provider.clone();
-            // allow for a larger wait time. Therefore, in here we allow for 5 minutes of waiting
+                async move {
-            // with exponential backoff each time we attempt to get the receipt and find that it's
+                    match provider.get_transaction_receipt(transaction_hash).await {
-            // not available.
+                        Ok(Some(receipt)) => Ok(ControlFlow::Break(receipt)),
-            let mut retries = 0;
+                        Ok(None) => Ok(ControlFlow::Continue(())),
-            let mut total_wait_duration = Duration::from_secs(0);
+                        Err(error) => {
-            let max_allowed_wait_duration = Duration::from_secs(5 * 60);
+                            let error_string = error.to_string();
-            loop {
+                            match error_string.contains(Self::TRANSACTION_INDEXING_ERROR) {
-                if total_wait_duration >= max_allowed_wait_duration {
+                                true => Ok(ControlFlow::Continue(())),
-                    tracing::error!(
+                                false => Err(error.into()),
-                        ?total_wait_duration,
+                            }
-                        ?max_allowed_wait_duration,
-                        retry_count = retries,
-                        "Failed to get receipt after polling for it"
-                    );
-                    anyhow::bail!(
-                        "Polled for receipt for {total_wait_duration:?} but failed to get it"
-                    );
-                }
-
-                match provider.get_transaction_receipt(*transaction_hash).await {
-                    Ok(Some(receipt)) => {
-                        tracing::info!(?total_wait_duration, "Found receipt");
-                        break Ok(receipt);
-                    }
-                    Ok(None) => {}
-                    Err(error) => {
-                        let error_string = error.to_string();
-                        if !error_string.contains(Self::TRANSACTION_INDEXING_ERROR) {
-                            break Err(error.into());
                         }
                     }
-                };
+                }
-
+            },
-                let next_wait_duration = Duration::from_secs(2u64.pow(retries))
+        )
-                    .min(max_allowed_wait_duration - total_wait_duration);
+        .instrument(tracing::info_span!(
-                total_wait_duration += next_wait_duration;
+            "Awaiting transaction receipt",
-                retries += 1;
+            ?transaction_hash
-
+        ))
-                tokio::time::sleep(next_wait_duration).await;
+        .await
-            }
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
-    fn trace_transaction(
+    async fn trace_transaction(
         &self,
         transaction: &TransactionReceipt,
         trace_options: GethDebugTracingOptions,
     ) -> anyhow::Result<alloy::rpc::types::trace::geth::GethTrace> {
-        let tx_hash = transaction.transaction_hash;
+        let provider = Arc::new(self.provider().await?);
-        let provider = self.provider();
+        poll(
-        BlockingExecutor::execute(async move {
+            Self::TRACE_POLLING_DURATION,
-            Ok(provider
+            Default::default(),
-                .await?
+            move || {
-                .debug_trace_transaction(tx_hash, trace_options)
+                let provider = provider.clone();
-                .await?)
+                let trace_options = trace_options.clone();
-        })?
+                async move {
+                    match provider
+                        .debug_trace_transaction(transaction.transaction_hash, trace_options)
+                        .await
+                    {
+                        Ok(trace) => Ok(ControlFlow::Break(trace)),
+                        Err(error) => {
+                            let error_string = error.to_string();
+                            match error_string.contains(Self::TRANSACTION_TRACING_ERROR) {
+                                true => Ok(ControlFlow::Continue(())),
+                                false => Err(error.into()),
+                            }
+                        }
+                    }
+                }
+            },
+        )
+        .await
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
-    fn state_diff(&self, transaction: &TransactionReceipt) -> anyhow::Result<DiffMode> {
+    async fn state_diff(&self, transaction: &TransactionReceipt) -> anyhow::Result<DiffMode> {
         let trace_options = GethDebugTracingOptions::prestate_tracer(PreStateConfig {
             diff_mode: Some(true),
             disable_code: None,
             disable_storage: None,
         });
         match self
-            .trace_transaction(transaction, trace_options)?
+            .trace_transaction(transaction, trace_options)
+            .await?
             .try_into_pre_state_frame()?
         {
             PreStateFrame::Diff(diff) => Ok(diff),
             _ => anyhow::bail!("expected a diff mode trace"),
         }
     }
-}
 
-impl ResolverApi for Instance {
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    async fn balance_of(&self, address: Address) -> anyhow::Result<U256> {
-    fn chain_id(&self) -> anyhow::Result<alloy::primitives::ChainId> {
+        self.provider()
-        let provider = self.provider();
+            .await?
-        BlockingExecutor::execute(async move {
+            .get_balance(address)
-            provider.await?.get_chain_id().await.map_err(Into::into)
+            .await
-        })?
+            .map_err(Into::into)
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
-    fn block_gas_limit(&self, number: BlockNumberOrTag) -> anyhow::Result<u128> {
+    async fn latest_state_proof(
-        let provider = self.provider();
+        &self,
-        BlockingExecutor::execute(async move {
+        address: Address,
-            provider
+        keys: Vec<StorageKey>,
-                .await?
+    ) -> anyhow::Result<EIP1186AccountProofResponse> {
-                .get_block_by_number(number)
+        self.provider()
-                .await?
+            .await?
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .get_proof(address, keys)
-                .map(|block| block.header.gas_limit as _)
+            .latest()
-        })?
+            .await
-    }
+            .map_err(Into::into)
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
-    fn block_coinbase(&self, number: BlockNumberOrTag) -> anyhow::Result<Address> {
-        let provider = self.provider();
-        BlockingExecutor::execute(async move {
-            provider
-                .await?
-                .get_block_by_number(number)
-                .await?
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.beneficiary)
-        })?
-    }
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
-    fn block_difficulty(&self, number: BlockNumberOrTag) -> anyhow::Result<U256> {
-        let provider = self.provider();
-        BlockingExecutor::execute(async move {
-            provider
-                .await?
-                .get_block_by_number(number)
-                .await?
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.difficulty)
-        })?
-    }
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
-    fn block_hash(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
-        let provider = self.provider();
-        BlockingExecutor::execute(async move {
-            provider
-                .await?
-                .get_block_by_number(number)
-                .await?
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.hash)
-        })?
-    }
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
-    fn block_timestamp(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
-        let provider = self.provider();
-        BlockingExecutor::execute(async move {
-            provider
-                .await?
-                .get_block_by_number(number)
-                .await?
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.timestamp)
-        })?
-    }
-
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
-    fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
-        let provider = self.provider();
-        BlockingExecutor::execute(async move {
-            provider.await?.get_block_number().await.map_err(Into::into)
-        })?
     }
 }
 
-impl Node for Instance {
+impl ResolverApi for GethNode {
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn chain_id(&self) -> anyhow::Result<alloy::primitives::ChainId> {
+        self.provider()
+            .await?
+            .get_chain_id()
+            .await
+            .map_err(Into::into)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn transaction_gas_price(&self, tx_hash: &TxHash) -> anyhow::Result<u128> {
+        self.provider()
+            .await?
+            .get_transaction_receipt(*tx_hash)
+            .await?
+            .context("Failed to get the transaction receipt")
+            .map(|receipt| receipt.effective_gas_price)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_gas_limit(&self, number: BlockNumberOrTag) -> anyhow::Result<u128> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.gas_limit as _)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_coinbase(&self, number: BlockNumberOrTag) -> anyhow::Result<Address> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.beneficiary)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_difficulty(&self, number: BlockNumberOrTag) -> anyhow::Result<U256> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| U256::from_be_bytes(block.header.mix_hash.0))
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_base_fee(&self, number: BlockNumberOrTag) -> anyhow::Result<u64> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .and_then(|block| {
+                block
+                    .header
+                    .base_fee_per_gas
+                    .context("Failed to get the base fee per gas")
+            })
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_hash(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.hash)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn block_timestamp(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.timestamp)
+    }
+
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
+    async fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
+        self.provider()
+            .await?
+            .get_block_number()
+            .await
+            .map_err(Into::into)
+    }
+}
+
+impl Node for GethNode {
     fn new(config: &Arguments) -> Self {
         let geth_directory = config.directory().join(Self::BASE_DIRECTORY);
         let id = NODE_COUNT.fetch_add(1, Ordering::SeqCst);
@@ -460,7 +521,6 @@ impl Node for Instance {
             geth: config.geth.clone(),
             id,
             handle: None,
-            network_id: config.network_id,
             start_timeout: config.geth_start_timeout,
             wallet,
             // We know that we only need to be storing 2 files so we can specify that when creating
@@ -470,12 +530,12 @@ impl Node for Instance {
         }
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn connection_string(&self) -> String {
         self.connection_string.clone()
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
     fn shutdown(&mut self) -> anyhow::Result<()> {
         // Terminate the processes in a graceful manner to allow for the output to be flushed.
         if let Some(mut child) = self.handle.take() {
@@ -497,13 +557,13 @@ impl Node for Instance {
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
     fn spawn(&mut self, genesis: String) -> anyhow::Result<()> {
         self.init(genesis)?.spawn_process()?;
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id), err)]
     fn version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.geth)
             .arg("--version")
@@ -516,17 +576,21 @@ impl Node for Instance {
         Ok(String::from_utf8_lossy(&output).into())
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn matches_target(&self, targets: Option<&[String]>) -> bool {
         match targets {
             None => true,
             Some(targets) => targets.iter().any(|str| str.as_str() == "evm"),
         }
     }
+
+    fn evm_version() -> EVMVersion {
+        EVMVersion::Cancun
+    }
 }
 
-impl Drop for Instance {
+impl Drop for GethNode {
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(level = "info", skip_all, fields(geth_node_id = self.id))]
     fn drop(&mut self) {
         self.shutdown().expect("Failed to shutdown")
     }
@@ -550,9 +614,9 @@ mod tests {
         (config, temp_dir)
     }
 
-    fn new_node() -> (Instance, TempDir) {
+    fn new_node() -> (GethNode, TempDir) {
         let (args, temp_dir) = test_config();
-        let mut node = Instance::new(&args);
+        let mut node = GethNode::new(&args);
         node.init(GENESIS_JSON.to_owned())
             .expect("Failed to initialize the node")
             .spawn_process()
@@ -562,110 +626,110 @@ mod tests {
 
     #[test]
     fn init_works() {
-        Instance::new(&test_config().0)
+        GethNode::new(&test_config().0)
             .init(GENESIS_JSON.to_string())
             .unwrap();
     }
 
     #[test]
     fn spawn_works() {
-        Instance::new(&test_config().0)
+        GethNode::new(&test_config().0)
             .spawn(GENESIS_JSON.to_string())
             .unwrap();
     }
 
     #[test]
     fn version_works() {
-        let version = Instance::new(&test_config().0).version().unwrap();
+        let version = GethNode::new(&test_config().0).version().unwrap();
         assert!(
             version.starts_with("geth version"),
             "expected version string, got: '{version}'"
         );
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_chain_id_from_node() {
+    async fn can_get_chain_id_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let chain_id = node.chain_id();
+        let chain_id = node.chain_id().await;
 
         // Assert
         let chain_id = chain_id.expect("Failed to get the chain id");
         assert_eq!(chain_id, 420_420_420);
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_gas_limit_from_node() {
+    async fn can_get_gas_limit_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let gas_limit = node.block_gas_limit(BlockNumberOrTag::Latest);
+        let gas_limit = node.block_gas_limit(BlockNumberOrTag::Latest).await;
 
         // Assert
         let gas_limit = gas_limit.expect("Failed to get the gas limit");
         assert_eq!(gas_limit, u32::MAX as u128)
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_coinbase_from_node() {
+    async fn can_get_coinbase_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let coinbase = node.block_coinbase(BlockNumberOrTag::Latest);
+        let coinbase = node.block_coinbase(BlockNumberOrTag::Latest).await;
 
         // Assert
         let coinbase = coinbase.expect("Failed to get the coinbase");
         assert_eq!(coinbase, Address::new([0xFF; 20]))
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_difficulty_from_node() {
+    async fn can_get_block_difficulty_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let block_difficulty = node.block_difficulty(BlockNumberOrTag::Latest);
+        let block_difficulty = node.block_difficulty(BlockNumberOrTag::Latest).await;
 
         // Assert
         let block_difficulty = block_difficulty.expect("Failed to get the block difficulty");
         assert_eq!(block_difficulty, U256::ZERO)
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_hash_from_node() {
+    async fn can_get_block_hash_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let block_hash = node.block_hash(BlockNumberOrTag::Latest);
+        let block_hash = node.block_hash(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = block_hash.expect("Failed to get the block hash");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_timestamp_from_node() {
+    async fn can_get_block_timestamp_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let block_timestamp = node.block_timestamp(BlockNumberOrTag::Latest);
+        let block_timestamp = node.block_timestamp(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = block_timestamp.expect("Failed to get the block timestamp");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_number_from_node() {
+    async fn can_get_block_number_from_node() {
         // Arrange
         let (node, _temp_dir) = new_node();
 
         // Act
-        let block_number = node.last_block_number();
+        let block_number = node.last_block_number().await;
 
         // Assert
         let block_number = block_number.expect("Failed to get the block number");

crates/node/src/kitchensink.rs

@@ -16,7 +16,8 @@ use alloy::{
         TransactionBuilderError, UnbuiltTransactionError,
     },
     primitives::{
-        Address, B64, B256, BlockHash, BlockNumber, BlockTimestamp, Bloom, Bytes, FixedBytes, U256,
+        Address, B64, B256, BlockHash, BlockNumber, BlockTimestamp, Bloom, Bytes, FixedBytes,
+        StorageKey, TxHash, U256,
     },
     providers::{
         Provider, ProviderBuilder,
@@ -24,12 +25,15 @@ use alloy::{
         fillers::{CachedNonceManager, ChainIdFiller, FillProvider, NonceFiller, TxFiller},
     },
     rpc::types::{
-        TransactionReceipt,
+        EIP1186AccountProofResponse, TransactionReceipt,
         eth::{Block, Header, Transaction},
         trace::geth::{DiffMode, GethDebugTracingOptions, PreStateConfig, PreStateFrame},
     },
     signers::local::PrivateKeySigner,
 };
+use anyhow::Context;
+use revive_common::EVMVersion;
+use revive_dt_common::fs::clear_directory;
 use revive_dt_format::traits::ResolverApi;
 use serde::{Deserialize, Serialize};
 use serde_json::{Value as JsonValue, json};
@@ -37,7 +41,6 @@ use sp_core::crypto::Ss58Codec;
 use sp_runtime::AccountId32;
 use tracing::Level;
 
-use revive_dt_common::concepts::BlockingExecutor;
 use revive_dt_config::Arguments;
 use revive_dt_node_interaction::EthereumNode;
 
@@ -86,6 +89,9 @@ impl KitchensinkNode {
 
     #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
     fn init(&mut self, genesis: &str) -> anyhow::Result<&mut Self> {
+        let _ = clear_directory(&self.base_directory);
+        let _ = clear_directory(&self.logs_directory);
+
         create_dir_all(&self.base_directory)?;
         create_dir_all(&self.logs_directory)?;
 
@@ -154,7 +160,7 @@ impl KitchensinkNode {
         Ok(self)
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     fn spawn_process(&mut self) -> anyhow::Result<()> {
         let substrate_rpc_port = Self::BASE_SUBSTRATE_RPC_PORT + self.id as u16;
         let proxy_rpc_port = Self::BASE_PROXY_RPC_PORT + self.id as u16;
@@ -206,7 +212,7 @@ impl KitchensinkNode {
         if let Err(error) = Self::wait_ready(
             self.kitchensink_stderr_log_file_path().as_path(),
             Self::SUBSTRATE_READY_MARKER,
-            Duration::from_secs(30),
+            Duration::from_secs(60),
         ) {
             tracing::error!(
                 ?error,
@@ -235,7 +241,7 @@ impl KitchensinkNode {
         if let Err(error) = Self::wait_ready(
             self.proxy_stderr_log_file_path().as_path(),
             Self::ETH_PROXY_READY_MARKER,
-            Duration::from_secs(30),
+            Duration::from_secs(60),
         ) {
             tracing::error!(?error, "Failed to start proxy, shutting down gracefully");
             self.shutdown()?;
@@ -252,7 +258,7 @@ impl KitchensinkNode {
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     fn extract_balance_from_genesis_file(
         &self,
         genesis: &Genesis,
@@ -301,7 +307,7 @@ impl KitchensinkNode {
         }
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     pub fn eth_rpc_version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.eth_proxy_binary)
             .arg("--version")
@@ -361,9 +367,9 @@ impl KitchensinkNode {
                 .disable_recommended_fillers()
                 .network::<KitchenSinkNetwork>()
                 .filler(FallbackGasFiller::new(
-                    30_000_000,
+                    25_000_000,
-                    200_000_000_000,
+                    1_000_000_000,
-                    3_000_000_000,
+                    1_000_000_000,
                 ))
                 .filler(ChainIdFiller::default())
                 .filler(NonceFiller::new(nonce_manager))
@@ -376,138 +382,170 @@ impl KitchensinkNode {
 }
 
 impl EthereumNode for KitchensinkNode {
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn execute_transaction(
+    async fn execute_transaction(
         &self,
         transaction: alloy::rpc::types::TransactionRequest,
     ) -> anyhow::Result<TransactionReceipt> {
         tracing::debug!(?transaction, "Submitting transaction");
-        let provider = self.provider();
+        let receipt = self
-        let receipt = BlockingExecutor::execute(async move {
+            .provider()
-            Ok(provider
+            .await?
-                .await?
+            .send_transaction(transaction)
-                .send_transaction(transaction)
+            .await?
-                .await?
+            .get_receipt()
-                .get_receipt()
+            .await?;
-                .await?)
-        })?;
         tracing::info!(?receipt, "Submitted tx to kitchensink");
-        receipt
+        Ok(receipt)
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn trace_transaction(
+    async fn trace_transaction(
         &self,
         transaction: &TransactionReceipt,
         trace_options: GethDebugTracingOptions,
     ) -> anyhow::Result<alloy::rpc::types::trace::geth::GethTrace> {
         let tx_hash = transaction.transaction_hash;
-        let provider = self.provider();
+        Ok(self
-        BlockingExecutor::execute(async move {
+            .provider()
-            Ok(provider
+            .await?
-                .await?
+            .debug_trace_transaction(tx_hash, trace_options)
-                .debug_trace_transaction(tx_hash, trace_options)
+            .await?)
-                .await?)
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn state_diff(&self, transaction: &TransactionReceipt) -> anyhow::Result<DiffMode> {
+    async fn state_diff(&self, transaction: &TransactionReceipt) -> anyhow::Result<DiffMode> {
         let trace_options = GethDebugTracingOptions::prestate_tracer(PreStateConfig {
             diff_mode: Some(true),
             disable_code: None,
             disable_storage: None,
         });
         match self
-            .trace_transaction(transaction, trace_options)?
+            .trace_transaction(transaction, trace_options)
+            .await?
             .try_into_pre_state_frame()?
         {
             PreStateFrame::Diff(diff) => Ok(diff),
             _ => anyhow::bail!("expected a diff mode trace"),
         }
     }
+
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
+    async fn balance_of(&self, address: Address) -> anyhow::Result<U256> {
+        self.provider()
+            .await?
+            .get_balance(address)
+            .await
+            .map_err(Into::into)
+    }
+
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
+    async fn latest_state_proof(
+        &self,
+        address: Address,
+        keys: Vec<StorageKey>,
+    ) -> anyhow::Result<EIP1186AccountProofResponse> {
+        self.provider()
+            .await?
+            .get_proof(address, keys)
+            .latest()
+            .await
+            .map_err(Into::into)
+    }
 }
 
 impl ResolverApi for KitchensinkNode {
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn chain_id(&self) -> anyhow::Result<alloy::primitives::ChainId> {
+    async fn chain_id(&self) -> anyhow::Result<alloy::primitives::ChainId> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider.await?.get_chain_id().await.map_err(Into::into)
+            .get_chain_id()
-        })?
+            .await
+            .map_err(Into::into)
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn block_gas_limit(&self, number: BlockNumberOrTag) -> anyhow::Result<u128> {
+    async fn transaction_gas_price(&self, tx_hash: &TxHash) -> anyhow::Result<u128> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider
+            .get_transaction_receipt(*tx_hash)
-                .await?
+            .await?
-                .get_block_by_number(number)
+            .context("Failed to get the transaction receipt")
-                .await?
+            .map(|receipt| receipt.effective_gas_price)
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.gas_limit)
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn block_coinbase(&self, number: BlockNumberOrTag) -> anyhow::Result<Address> {
+    async fn block_gas_limit(&self, number: BlockNumberOrTag) -> anyhow::Result<u128> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider
+            .get_block_by_number(number)
-                .await?
+            .await?
-                .get_block_by_number(number)
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .await?
+            .map(|block| block.header.gas_limit as _)
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.beneficiary)
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn block_difficulty(&self, number: BlockNumberOrTag) -> anyhow::Result<U256> {
+    async fn block_coinbase(&self, number: BlockNumberOrTag) -> anyhow::Result<Address> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider
+            .get_block_by_number(number)
-                .await?
+            .await?
-                .get_block_by_number(number)
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .await?
+            .map(|block| block.header.beneficiary)
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.difficulty)
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn block_hash(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
+    async fn block_difficulty(&self, number: BlockNumberOrTag) -> anyhow::Result<U256> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider
+            .get_block_by_number(number)
-                .await?
+            .await?
-                .get_block_by_number(number)
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .await?
+            .map(|block| U256::from_be_bytes(block.header.mix_hash.0))
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .map(|block| block.header.hash)
-        })?
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn block_timestamp(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
+    async fn block_base_fee(&self, number: BlockNumberOrTag) -> anyhow::Result<u64> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider
+            .get_block_by_number(number)
-                .await?
+            .await?
-                .get_block_by_number(number)
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
-                .await?
+            .and_then(|block| {
-                .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+                block
-                .map(|block| block.header.timestamp)
+                    .header
-        })?
+                    .base_fee_per_gas
+                    .context("Failed to get the base fee per gas")
+            })
     }
 
-    #[tracing::instrument(skip_all, fields(geth_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
-    fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
+    async fn block_hash(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockHash> {
-        let provider = self.provider();
+        self.provider()
-        BlockingExecutor::execute(async move {
+            .await?
-            provider.await?.get_block_number().await.map_err(Into::into)
+            .get_block_by_number(number)
-        })?
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.hash)
+    }
+
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
+    async fn block_timestamp(&self, number: BlockNumberOrTag) -> anyhow::Result<BlockTimestamp> {
+        self.provider()
+            .await?
+            .get_block_by_number(number)
+            .await?
+            .ok_or(anyhow::Error::msg("Blockchain has no blocks"))
+            .map(|block| block.header.timestamp)
+    }
+
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
+    async fn last_block_number(&self) -> anyhow::Result<BlockNumber> {
+        self.provider()
+            .await?
+            .get_block_number()
+            .await
+            .map_err(Into::into)
     }
 }
 
@@ -549,7 +587,7 @@ impl Node for KitchensinkNode {
         self.rpc_url.clone()
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     fn shutdown(&mut self) -> anyhow::Result<()> {
         // Terminate the processes in a graceful manner to allow for the output to be flushed.
         if let Some(mut child) = self.process_proxy.take() {
@@ -576,12 +614,12 @@ impl Node for KitchensinkNode {
         Ok(())
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     fn spawn(&mut self, genesis: String) -> anyhow::Result<()> {
         self.init(&genesis)?.spawn_process()
     }
 
-    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id))]
+    #[tracing::instrument(skip_all, fields(kitchensink_node_id = self.id), err)]
     fn version(&self) -> anyhow::Result<String> {
         let output = Command::new(&self.substrate_binary)
             .arg("--version")
@@ -601,6 +639,10 @@ impl Node for KitchensinkNode {
             Some(targets) => targets.iter().any(|str| str.as_str() == "pvm"),
         }
     }
+
+    fn evm_version() -> EVMVersion {
+        EVMVersion::Cancun
+    }
 }
 
 impl Drop for KitchensinkNode {
@@ -1043,26 +1085,21 @@ mod tests {
     use revive_dt_config::Arguments;
     use std::path::PathBuf;
     use std::sync::{LazyLock, Mutex};
-    use temp_dir::TempDir;
 
     use std::fs;
 
     use super::*;
     use crate::{GENESIS_JSON, Node};
 
-    fn test_config() -> (Arguments, TempDir) {
+    fn test_config() -> Arguments {
-        let mut config = Arguments::default();
+        Arguments {
-        let temp_dir = TempDir::new().unwrap();
+            kitchensink: PathBuf::from("substrate-node"),
-
+            eth_proxy: PathBuf::from("eth-rpc"),
-        config.working_directory = temp_dir.path().to_path_buf().into();
+            ..Default::default()
-
+        }
-        config.kitchensink = PathBuf::from("substrate-node");
-        config.eth_proxy = PathBuf::from("eth-rpc");
-
-        (config, temp_dir)
     }
 
-    fn new_node() -> (KitchensinkNode, Arguments, TempDir) {
+    fn new_node() -> (KitchensinkNode, Arguments) {
         // Note: When we run the tests in the CI we found that if they're all
         // run in parallel then the CI is unable to start all of the nodes in
         // time and their start up times-out. Therefore, we want all of the
@@ -1081,20 +1118,20 @@ mod tests {
         static NODE_START_MUTEX: Mutex<()> = Mutex::new(());
         let _guard = NODE_START_MUTEX.lock().unwrap();
 
-        let (args, temp_dir) = test_config();
+        let args = test_config();
         let mut node = KitchensinkNode::new(&args);
         node.init(GENESIS_JSON)
             .expect("Failed to initialize the node")
             .spawn_process()
             .expect("Failed to spawn the node process");
-        (node, args, temp_dir)
+        (node, args)
     }
 
     /// A shared node that multiple tests can use. It starts up once.
     fn shared_node() -> &'static KitchensinkNode {
-        static NODE: LazyLock<(KitchensinkNode, TempDir)> = LazyLock::new(|| {
+        static NODE: LazyLock<(KitchensinkNode, Arguments)> = LazyLock::new(|| {
-            let (node, _, temp_dir) = new_node();
+            let (node, args) = new_node();
-            (node, temp_dir)
+            (node, args)
         });
         &NODE.0
     }
@@ -1102,7 +1139,7 @@ mod tests {
     #[tokio::test]
     async fn node_mines_simple_transfer_transaction_and_returns_receipt() {
         // Arrange
-        let (node, args, _temp_dir) = new_node();
+        let (node, args) = new_node();
 
         let provider = node.provider().await.expect("Failed to create provider");
 
@@ -1137,7 +1174,7 @@ mod tests {
         }
         "#;
 
-        let mut dummy_node = KitchensinkNode::new(&test_config().0);
+        let mut dummy_node = KitchensinkNode::new(&test_config());
 
         // Call `init()`
         dummy_node.init(genesis_content).expect("init failed");
@@ -1181,7 +1218,7 @@ mod tests {
         }
         "#;
 
-        let node = KitchensinkNode::new(&test_config().0);
+        let node = KitchensinkNode::new(&test_config());
 
         let result = node
             .extract_balance_from_genesis_file(&serde_json::from_str(genesis_json).unwrap())
@@ -1252,15 +1289,16 @@ mod tests {
 
     #[test]
     fn spawn_works() {
-        let (config, _temp_dir) = test_config();
+        let config = test_config();
 
         let mut node = KitchensinkNode::new(&config);
+
         node.spawn(GENESIS_JSON.to_string()).unwrap();
     }
 
     #[test]
     fn version_works() {
-        let (config, _temp_dir) = test_config();
+        let config = test_config();
 
         let node = KitchensinkNode::new(&config);
         let version = node.version().unwrap();
@@ -1273,7 +1311,7 @@ mod tests {
 
     #[test]
     fn eth_rpc_version_works() {
-        let (config, _temp_dir) = test_config();
+        let config = test_config();
 
         let node = KitchensinkNode::new(&config);
         let version = node.eth_rpc_version().unwrap();
@@ -1284,86 +1322,86 @@ mod tests {
         );
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_chain_id_from_node() {
+    async fn can_get_chain_id_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let chain_id = node.chain_id();
+        let chain_id = node.chain_id().await;
 
         // Assert
         let chain_id = chain_id.expect("Failed to get the chain id");
         assert_eq!(chain_id, 420_420_420);
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_gas_limit_from_node() {
+    async fn can_get_gas_limit_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let gas_limit = node.block_gas_limit(BlockNumberOrTag::Latest);
+        let gas_limit = node.block_gas_limit(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = gas_limit.expect("Failed to get the gas limit");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_coinbase_from_node() {
+    async fn can_get_coinbase_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let coinbase = node.block_coinbase(BlockNumberOrTag::Latest);
+        let coinbase = node.block_coinbase(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = coinbase.expect("Failed to get the coinbase");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_difficulty_from_node() {
+    async fn can_get_block_difficulty_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let block_difficulty = node.block_difficulty(BlockNumberOrTag::Latest);
+        let block_difficulty = node.block_difficulty(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = block_difficulty.expect("Failed to get the block difficulty");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_hash_from_node() {
+    async fn can_get_block_hash_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let block_hash = node.block_hash(BlockNumberOrTag::Latest);
+        let block_hash = node.block_hash(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = block_hash.expect("Failed to get the block hash");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_timestamp_from_node() {
+    async fn can_get_block_timestamp_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let block_timestamp = node.block_timestamp(BlockNumberOrTag::Latest);
+        let block_timestamp = node.block_timestamp(BlockNumberOrTag::Latest).await;
 
         // Assert
         let _ = block_timestamp.expect("Failed to get the block timestamp");
     }
 
-    #[test]
+    #[tokio::test]
-    fn can_get_block_number_from_node() {
+    async fn can_get_block_number_from_node() {
         // Arrange
         let node = shared_node();
 
         // Act
-        let block_number = node.last_block_number();
+        let block_number = node.last_block_number().await;
 
         // Assert
         let _ = block_number.expect("Failed to get the block number");

crates/node/src/lib.rs

@@ -1,5 +1,6 @@
 //! This crate implements the testing nodes.
 
+use revive_common::EVMVersion;
 use revive_dt_config::Arguments;
 use revive_dt_node_interaction::EthereumNode;
 
@@ -36,4 +37,7 @@ pub trait Node: EthereumNode {
     /// Given a list of targets from the metadata file, this function determines if the metadata
     /// file can be ran on this node or not.
     fn matches_target(&self, targets: Option<&[String]>) -> bool;
+
+    /// Returns the EVM version of the node.
+    fn evm_version() -> EVMVersion;
 }

crates/node/src/pool.rs

@@ -1,11 +1,12 @@
 //! This crate implements concurrent handling of testing node.
 
 use std::{
-    fs::read_to_string,
     sync::atomic::{AtomicUsize, Ordering},
     thread,
 };
 
+use revive_dt_common::cached_fs::read_to_string;
+
 use anyhow::Context;
 use revive_dt_config::Arguments;
 
@@ -24,7 +25,7 @@ where
 {
     /// Create a new Pool. This will start as many nodes as there are workers in `config`.
     pub fn new(config: &Arguments) -> anyhow::Result<Self> {
-        let nodes = config.workers;
+        let nodes = config.number_of_nodes;
         let genesis = read_to_string(&config.genesis_file).context(format!(
             "can not read genesis file: {}",
             config.genesis_file.display()

crates/report/Cargo.toml

@@ -8,6 +8,7 @@ repository.workspace = true
 rust-version.workspace = true
 
 [dependencies]
+revive-dt-common = { workspace = true }
 revive-dt-config = { workspace = true }
 revive-dt-format = { workspace = true }
 revive-dt-compiler = { workspace = true }

crates/report/src/reporter.rs

@@ -12,18 +12,19 @@ use std::{
 };
 
 use anyhow::Context;
-use revive_dt_compiler::{CompilerInput, CompilerOutput};
+use serde::Serialize;
-use serde::{Deserialize, Serialize};
 
+use revive_dt_common::types::Mode;
+use revive_dt_compiler::{CompilerInput, CompilerOutput};
 use revive_dt_config::{Arguments, TestingPlatform};
-use revive_dt_format::{corpus::Corpus, mode::SolcMode};
+use revive_dt_format::corpus::Corpus;
 
 use crate::analyzer::CompilerStatistics;
 
 pub(crate) static REPORTER: OnceLock<Mutex<Report>> = OnceLock::new();
 
 /// The `Report` datastructure stores all relevant inforamtion required for generating reports.
-#[derive(Clone, Debug, Default, Serialize, Deserialize)]
+#[derive(Clone, Debug, Default, Serialize)]
 pub struct Report {
     /// The configuration used during the test.
     pub config: Arguments,
@@ -41,14 +42,14 @@ pub struct Report {
 }
 
 /// Contains a compiled contract.
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize)]
 pub struct CompilationTask {
     /// The observed compiler input.
     pub json_input: CompilerInput,
     /// The observed compiler output.
     pub json_output: Option<CompilerOutput>,
     /// The observed compiler mode.
-    pub mode: SolcMode,
+    pub mode: Mode,
     /// The observed compiler version.
     pub compiler_version: String,
     /// The observed error, if any.
@@ -56,7 +57,7 @@ pub struct CompilationTask {
 }
 
 /// Represents a report about a compilation task.
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize)]
 pub struct CompilationResult {
     /// The observed compilation task.
     pub compilation_task: CompilationTask,
@@ -65,7 +66,7 @@ pub struct CompilationResult {
 }
 
 /// The [Span] struct indicates the context of what is being reported.
-#[derive(Clone, Copy, Debug, Serialize, Deserialize)]
+#[derive(Clone, Copy, Debug, Serialize)]
 pub struct Span {
     /// The corpus index this belongs to.
     corpus: usize,

crates/solc-binaries/Cargo.toml

@@ -14,6 +14,7 @@ revive-dt-common = { workspace = true }
 anyhow = { workspace = true }
 hex = { workspace = true }
 tracing = { workspace = true }
+tokio = { workspace = true }
 reqwest = { workspace = true }
 semver = { workspace = true }
 serde = { workspace = true }

crates/solc-binaries/src/cache.rs

@@ -6,37 +6,39 @@ use std::{
     io::{BufWriter, Write},
     os::unix::fs::PermissionsExt,
     path::{Path, PathBuf},
-    sync::{LazyLock, Mutex},
+    sync::LazyLock,
 };
 
-use crate::download::GHDownloader;
+use tokio::sync::Mutex;
+
+use crate::download::SolcDownloader;
 
 pub const SOLC_CACHE_DIRECTORY: &str = "solc";
 pub(crate) static SOLC_CACHER: LazyLock<Mutex<HashSet<PathBuf>>> = LazyLock::new(Default::default);
 
-pub(crate) fn get_or_download(
+pub(crate) async fn get_or_download(
     working_directory: &Path,
-    downloader: &GHDownloader,
+    downloader: &SolcDownloader,
 ) -> anyhow::Result<PathBuf> {
     let target_directory = working_directory
         .join(SOLC_CACHE_DIRECTORY)
         .join(downloader.version.to_string());
     let target_file = target_directory.join(downloader.target);
 
-    let mut cache = SOLC_CACHER.lock().unwrap();
+    let mut cache = SOLC_CACHER.lock().await;
     if cache.contains(&target_file) {
         tracing::debug!("using cached solc: {}", target_file.display());
         return Ok(target_file);
     }
 
     create_dir_all(target_directory)?;
-    download_to_file(&target_file, downloader)?;
+    download_to_file(&target_file, downloader).await?;
     cache.insert(target_file.clone());
 
     Ok(target_file)
 }
 
-fn download_to_file(path: &Path, downloader: &GHDownloader) -> anyhow::Result<()> {
+async fn download_to_file(path: &Path, downloader: &SolcDownloader) -> anyhow::Result<()> {
     tracing::info!("caching file: {}", path.display());
 
     let Ok(file) = File::create_new(path) else {
@@ -52,7 +54,7 @@ fn download_to_file(path: &Path, downloader: &GHDownloader) -> anyhow::Result<()
     }
 
     let mut file = BufWriter::new(file);
-    file.write_all(&downloader.download()?)?;
+    file.write_all(&downloader.download().await?)?;
     file.flush()?;
     drop(file);
 

crates/solc-binaries/src/download.rs

@@ -25,12 +25,12 @@ impl List {
     ///
     /// Caches the list retrieved from the `url` into [LIST_CACHE],
     /// subsequent calls with the same `url` will return the cached list.
-    pub fn download(url: &'static str) -> anyhow::Result<Self> {
+    pub async fn download(url: &'static str) -> anyhow::Result<Self> {
         if let Some(list) = LIST_CACHE.lock().unwrap().get(url) {
             return Ok(list.clone());
         }
 
-        let body: List = reqwest::blocking::get(url)?.json()?;
+        let body: List = reqwest::get(url).await?.json().await?;
 
         LIST_CACHE.lock().unwrap().insert(url, body.clone());
 
@@ -38,23 +38,23 @@ impl List {
     }
 }
 
-/// Download solc binaries from GitHub releases (IPFS links aren't reliable).
+/// Download solc binaries from the official SolidityLang site
 #[derive(Clone, Debug)]
-pub struct GHDownloader {
+pub struct SolcDownloader {
     pub version: Version,
     pub target: &'static str,
     pub list: &'static str,
 }
 
-impl GHDownloader {
+impl SolcDownloader {
-    pub const BASE_URL: &str = "https://github.com/ethereum/solidity/releases/download";
+    pub const BASE_URL: &str = "https://binaries.soliditylang.org";
 
-    pub const LINUX_NAME: &str = "solc-static-linux";
+    pub const LINUX_NAME: &str = "linux-amd64";
-    pub const MACOSX_NAME: &str = "solc-macos";
+    pub const MACOSX_NAME: &str = "macosx-amd64";
-    pub const WINDOWS_NAME: &str = "solc-windows.exe";
+    pub const WINDOWS_NAME: &str = "windows-amd64";
-    pub const WASM_NAME: &str = "soljson.js";
+    pub const WASM_NAME: &str = "wasm";
 
-    fn new(
+    async fn new(
         version: impl Into<VersionOrRequirement>,
         target: &'static str,
         list: &'static str,
@@ -67,7 +67,8 @@ impl GHDownloader {
                 list,
             }),
             VersionOrRequirement::Requirement(requirement) => {
-                let Some(version) = List::download(list)?
+                let Some(version) = List::download(list)
+                    .await?
                     .builds
                     .into_iter()
                     .map(|build| build.version)
@@ -85,41 +86,43 @@ impl GHDownloader {
         }
     }
 
-    pub fn linux(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
+    pub async fn linux(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
-        Self::new(version, Self::LINUX_NAME, List::LINUX_URL)
+        Self::new(version, Self::LINUX_NAME, List::LINUX_URL).await
     }
 
-    pub fn macosx(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
+    pub async fn macosx(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
-        Self::new(version, Self::MACOSX_NAME, List::MACOSX_URL)
+        Self::new(version, Self::MACOSX_NAME, List::MACOSX_URL).await
     }
 
-    pub fn windows(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
+    pub async fn windows(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
-        Self::new(version, Self::WINDOWS_NAME, List::WINDOWS_URL)
+        Self::new(version, Self::WINDOWS_NAME, List::WINDOWS_URL).await
     }
 
-    pub fn wasm(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
+    pub async fn wasm(version: impl Into<VersionOrRequirement>) -> anyhow::Result<Self> {
-        Self::new(version, Self::WASM_NAME, List::WASM_URL)
+        Self::new(version, Self::WASM_NAME, List::WASM_URL).await
-    }
-
-    /// Returns the download link.
-    pub fn url(&self) -> String {
-        format!("{}/v{}/{}", Self::BASE_URL, &self.version, &self.target)
     }
 
     /// Download the solc binary.
     ///
     /// Errors out if the download fails or the digest of the downloaded file
     /// mismatches the expected digest from the release [List].
-    pub fn download(&self) -> anyhow::Result<Vec<u8>> {
+    pub async fn download(&self) -> anyhow::Result<Vec<u8>> {
         tracing::info!("downloading solc: {self:?}");
-        let expected_digest = List::download(self.list)?
+        let builds = List::download(self.list).await?.builds;
-            .builds
+        let build = builds
             .iter()
             .find(|build| build.version == self.version)
-            .ok_or_else(|| anyhow::anyhow!("solc v{} not found builds", self.version))
+            .ok_or_else(|| anyhow::anyhow!("solc v{} not found builds", self.version))?;
-            .map(|b| b.sha256.strip_prefix("0x").unwrap_or(&b.sha256).to_string())?;
 
-        let file = reqwest::blocking::get(self.url())?.bytes()?.to_vec();
+        let path = build.path.clone();
+        let expected_digest = build
+            .sha256
+            .strip_prefix("0x")
+            .unwrap_or(&build.sha256)
+            .to_string();
+        let url = format!("{}/{}/{}", Self::BASE_URL, self.target, path.display());
+
+        let file = reqwest::get(url).await?.bytes().await?.to_vec();
 
         if hex::encode(Sha256::digest(&file)) != expected_digest {
             anyhow::bail!("sha256 mismatch for solc version {}", self.version);
@@ -131,29 +134,58 @@ impl GHDownloader {
 
 #[cfg(test)]
 mod tests {
-    use crate::{download::GHDownloader, list::List};
+    use crate::{download::SolcDownloader, list::List};
 
-    #[test]
+    #[tokio::test]
-    fn try_get_windows() {
+    async fn try_get_windows() {
-        let version = List::download(List::WINDOWS_URL).unwrap().latest_release;
+        let version = List::download(List::WINDOWS_URL)
-        GHDownloader::windows(version).unwrap().download().unwrap();
+            .await
+            .unwrap()
+            .latest_release;
+        SolcDownloader::windows(version)
+            .await
+            .unwrap()
+            .download()
+            .await
+            .unwrap();
     }
 
-    #[test]
+    #[tokio::test]
-    fn try_get_macosx() {
+    async fn try_get_macosx() {
-        let version = List::download(List::MACOSX_URL).unwrap().latest_release;
+        let version = List::download(List::MACOSX_URL)
-        GHDownloader::macosx(version).unwrap().download().unwrap();
+            .await
+            .unwrap()
+            .latest_release;
+        SolcDownloader::macosx(version)
+            .await
+            .unwrap()
+            .download()
+            .await
+            .unwrap();
     }
 
-    #[test]
+    #[tokio::test]
-    fn try_get_linux() {
+    async fn try_get_linux() {
-        let version = List::download(List::LINUX_URL).unwrap().latest_release;
+        let version = List::download(List::LINUX_URL)
-        GHDownloader::linux(version).unwrap().download().unwrap();
+            .await
+            .unwrap()
+            .latest_release;
+        SolcDownloader::linux(version)
+            .await
+            .unwrap()
+            .download()
+            .await
+            .unwrap();
     }
 
-    #[test]
+    #[tokio::test]
-    fn try_get_wasm() {
+    async fn try_get_wasm() {
-        let version = List::download(List::WASM_URL).unwrap().latest_release;
+        let version = List::download(List::WASM_URL).await.unwrap().latest_release;
-        GHDownloader::wasm(version).unwrap().download().unwrap();
+        SolcDownloader::wasm(version)
+            .await
+            .unwrap()
+            .download()
+            .await
+            .unwrap();
     }
 }

crates/solc-binaries/src/lib.rs

@@ -6,7 +6,7 @@
 use std::path::{Path, PathBuf};
 
 use cache::get_or_download;
-use download::GHDownloader;
+use download::SolcDownloader;
 
 use revive_dt_common::types::VersionOrRequirement;
 
@@ -19,22 +19,22 @@ pub mod list;
 ///
 /// Subsequent calls for the same version will use a cached artifact
 /// and not download it again.
-pub fn download_solc(
+pub async fn download_solc(
     cache_directory: &Path,
     version: impl Into<VersionOrRequirement>,
     wasm: bool,
 ) -> anyhow::Result<PathBuf> {
     let downloader = if wasm {
-        GHDownloader::wasm(version)
+        SolcDownloader::wasm(version).await
     } else if cfg!(target_os = "linux") {
-        GHDownloader::linux(version)
+        SolcDownloader::linux(version).await
     } else if cfg!(target_os = "macos") {
-        GHDownloader::macosx(version)
+        SolcDownloader::macosx(version).await
     } else if cfg!(target_os = "windows") {
-        GHDownloader::windows(version)
+        SolcDownloader::windows(version).await
     } else {
         unimplemented!()
     }?;
 
-    get_or_download(cache_directory, &downloader)
+    get_or_download(cache_directory, &downloader).await
 }