Polkavm heap (#2)

Use PolkaVM heap

crates/integration/Cargo.toml

@@ -6,10 +6,13 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-hex = { workspace = true }
 polkavm = { workspace = true }
+alloy-primitives = { workspace = true }
 parity-scale-codec = { workspace = true }
 revive-solidity = { path = "../solidity" }
 era-compiler-llvm-context = { path = "../llvm-context" }
-alloy-primitives = { workspace = true }
+hex = { workspace = true }
+env_logger = { workspace = true }
+
+[dev-dependencies]
 alloy-sol-types = { workspace = true }

crates/integration/contracts/Computation.sol

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
 contract Computation {
     function triangle_number(int64 n) public pure returns (int64 sum) {
         unchecked {

crates/integration/contracts/flipper.sol

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
 contract Flipper {
     bool coin;
 

crates/integration/src/mock_runtime.rs

@@ -217,9 +217,21 @@ pub fn call(mut state: State, on: &InstancePre<State>, export: ExportIndex) -> S
 
     let call_args = polkavm::CallArgs::new(&mut state, export);
 
+    init_logs();
+
     match on.instantiate().unwrap().call(state_args, call_args) {
         Err(polkavm::ExecutionError::Trap(_)) => state,
         Err(other) => panic!("unexpected error: {other}"),
         Ok(_) => panic!("unexpected return"),
     }
 }
+
+fn init_logs() {
+    if std::env::var("RUST_LOG").is_ok() {
+        #[cfg(test)]
+        let test = true;
+        #[cfg(not(test))]
+        let test = false;
+        let _ = env_logger::builder().is_test(test).try_init();
+    }
+}