1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

use crate::{
    circuit_input_builder::{CircuitInputStateRef, ExecStep},
    evm::{Opcode, OpcodeId},
    operation::CallContextField,
    Error,
};
use eth_types::{GethExecStep, Word};

#[derive(Debug, Copy, Clone)]
pub(crate) struct ErrorOOGLog;

impl Opcode for ErrorOOGLog {
    fn gen_associated_ops(
        state: &mut CircuitInputStateRef,
        geth_steps: &[GethExecStep],
    ) -> Result<Vec<ExecStep>, Error> {
        let geth_step = &geth_steps[0];
        let mut exec_step = state.new_step(geth_step)?;
        let next_step = if geth_steps.len() > 1 {
            Some(&geth_steps[1])
        } else {
            None
        };
        exec_step.error = state.get_step_err(geth_step, next_step)?;
        // assert op code can only be Log*
        assert!([
            OpcodeId::LOG0,
            OpcodeId::LOG1,
            OpcodeId::LOG2,
            OpcodeId::LOG3,
            OpcodeId::LOG4
        ]
        .contains(&geth_step.op));
        let mstart = geth_step.stack.nth_last(0)?;
        let msize = geth_step.stack.nth_last(1)?;

        state.stack_read(&mut exec_step, geth_step.stack.nth_last_filled(0), mstart)?;
        state.stack_read(&mut exec_step, geth_step.stack.nth_last_filled(1), msize)?;
        // read static call property
        state.call_context_read(
            &mut exec_step,
            state.call()?.call_id,
            CallContextField::IsStatic,
            Word::from(state.call()?.is_static as u8),
        )?;

        state.handle_return(&mut [&mut exec_step], geth_steps, true)?;
        Ok(vec![exec_step])
    }
}