the compiler interface

Signed-off-by: xermicus <bigcyrill@hotmail.com>

crates/compiler/src/lib.rs

@@ -0,0 +1,113 @@
+//! This crate provides compiler helpers for all supported Solidity targets:
+//! - Ethereum solc compiler
+//! - Polkadot revive compiler
+
+use std::{fs::read_to_string, path::Path};
+
+use revive_common::EVMVersion;
+use revive_solc_json_interface::{
+    SolcStandardJsonInput, SolcStandardJsonInputLanguage, SolcStandardJsonInputSettings,
+    SolcStandardJsonInputSettingsOptimizer, SolcStandardJsonInputSettingsSelection,
+    SolcStandardJsonOutput,
+};
+use semver::Version;
+
+pub mod revive_js;
+pub mod revive_resolc;
+pub mod solc;
+
+/// A common interface for all supported Solidity compilers.
+pub trait SolidityCompiler {
+    /// Extra options specific to the compiler.
+    type Options: Sized;
+
+    fn build(
+        &self,
+        input: &SolcStandardJsonInput,
+        extra_options: &Option<Self::Options>,
+    ) -> anyhow::Result<SolcStandardJsonOutput>;
+
+    fn new(solc_version: &Version) -> Self;
+}
+
+/// A generic builder style interface for configuring all compiler options.
+pub struct Compiler<T: SolidityCompiler> {
+    input: SolcStandardJsonInput,
+    extra_options: Option<T::Options>,
+    solc_version: Version,
+    allow_paths: Vec<String>,
+    base_path: Option<String>,
+}
+
+impl<T> Compiler<T>
+where
+    T: SolidityCompiler,
+{
+    pub fn new(solc_version: Version) -> Self {
+        Self {
+            input: SolcStandardJsonInput {
+                language: SolcStandardJsonInputLanguage::Solidity,
+                sources: Default::default(),
+                settings: SolcStandardJsonInputSettings::new(
+                    None,
+                    Default::default(),
+                    None,
+                    SolcStandardJsonInputSettingsSelection::new_required(),
+                    SolcStandardJsonInputSettingsOptimizer::new(
+                        false,
+                        None,
+                        &Version::new(0, 0, 0),
+                        false,
+                    ),
+                    None,
+                ),
+            },
+            extra_options: None,
+            solc_version,
+            allow_paths: Default::default(),
+            base_path: None,
+        }
+    }
+
+    pub fn solc_optimizer(mut self, enabled: bool) -> Self {
+        self.input.settings.optimizer.enabled = enabled;
+        self
+    }
+
+    pub fn with_source(mut self, path: &Path) -> anyhow::Result<Self> {
+        self.input
+            .sources
+            .insert(path.display().to_string(), read_to_string(path)?.into());
+        Ok(self)
+    }
+
+    pub fn evm_version(mut self, evm_version: EVMVersion) -> Self {
+        self.input.settings.evm_version = Some(evm_version);
+        self
+    }
+
+    pub fn solc_version(mut self, solc_version: Version) -> Self {
+        self.solc_version = solc_version;
+        self
+    }
+
+    pub fn extra_options(mut self, extra_options: T::Options) -> Self {
+        self.extra_options = Some(extra_options);
+        self
+    }
+
+    pub fn allow_path(mut self, path: String) -> Self {
+        self.allow_paths.push(path);
+        self
+    }
+
+    pub fn base_path(mut self, base_path: String) -> Self {
+        self.base_path = Some(base_path);
+        self
+    }
+
+    pub fn try_build(&self) -> anyhow::Result<SolcStandardJsonOutput> {
+        let compiler = T::new(&self.solc_version);
+        compiler.build(&self.input, &self.extra_options)
+    }
+}

crates/compiler/src/revive_js.rs

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+//! Implements the [SolidityCompiler] trait with revive Wasm for
+//! compiling contracts to PVM bytecode (via Wasm).

crates/compiler/src/revive_resolc.rs

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+//! Implements the [SolidityCompiler] trait with resolc for
+//! compiling contracts to PVM bytecode.

crates/compiler/src/solc.rs

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+//! Implements the [SolidityCompiler] trait with solc for
+//! compiling contracts to EVM bytecode.