revm_inspector/
lib.rs

1//! Inspector is a crate that provides a set of traits that allow inspecting the EVM execution.
2//!
3//! It is used to implement tracers that can be used to inspect the EVM execution.
4//! Implementing inspection is optional and it does not effect the core execution.
5#![cfg_attr(not(test), warn(unused_crate_dependencies))]
6#![cfg_attr(not(feature = "std"), no_std)]
7
8mod count_inspector;
9#[cfg(feature = "tracer")]
10mod eip3155;
11mod either;
12mod gas;
13/// Handler implementations for inspector integration.
14pub mod handler;
15mod inspect;
16mod inspector;
17mod mainnet_inspect;
18mod noop;
19mod traits;
20
21#[cfg(test)]
22mod inspector_tests;
23
24/// Inspector implementations.
25pub mod inspectors {
26    #[cfg(feature = "tracer")]
27    pub use super::eip3155::TracerEip3155;
28    pub use super::gas::GasInspector;
29}
30
31pub use count_inspector::CountInspector;
32pub use handler::{inspect_instructions, InspectorHandler};
33pub use inspect::{InspectCommitEvm, InspectEvm, InspectSystemCallEvm};
34pub use inspector::*;
35pub use noop::NoOpInspector;
36pub use traits::*;
37
38#[cfg(test)]
39mod tests {
40    use super::*;
41    use ::handler::{MainBuilder, MainContext};
42    use context::{BlockEnv, CfgEnv, Context, Journal, TxEnv};
43    use database::{BenchmarkDB, BENCH_CALLER, BENCH_TARGET};
44    use interpreter::{interpreter::EthInterpreter, InstructionResult, InterpreterTypes};
45    use primitives::TxKind;
46    use state::{bytecode::opcode, Bytecode};
47
48    struct HaltInspector;
49    impl<CTX, INTR: InterpreterTypes> Inspector<CTX, INTR> for HaltInspector {
50        fn step(&mut self, interp: &mut interpreter::Interpreter<INTR>, _context: &mut CTX) {
51            interp.halt(InstructionResult::Stop);
52        }
53    }
54
55    #[test]
56    fn test_step_halt() {
57        let bytecode = [opcode::INVALID];
58        let r = run(&bytecode, HaltInspector);
59        assert!(r.is_success());
60    }
61
62    fn run(
63        bytecode: &[u8],
64        inspector: impl Inspector<
65            Context<BlockEnv, TxEnv, CfgEnv, BenchmarkDB, Journal<BenchmarkDB>, ()>,
66            EthInterpreter,
67        >,
68    ) -> context::result::ExecutionResult {
69        let bytecode = Bytecode::new_raw(bytecode.to_vec().into());
70        let ctx = Context::mainnet().with_db(BenchmarkDB::new_bytecode(bytecode));
71        let mut evm = ctx.build_mainnet_with_inspector(inspector);
72        evm.inspect_one_tx(
73            TxEnv::builder()
74                .caller(BENCH_CALLER)
75                .kind(TxKind::Call(BENCH_TARGET))
76                .gas_limit(21100)
77                .build()
78                .unwrap(),
79        )
80        .unwrap()
81    }
82}
revm_inspector/lib.rs

revm_inspector/
lib.rs
