neo-devpack-solidity 0.22.0

Production-focused Solidity-to-NeoVM compilation system
Documentation 
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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77

use super::*;

impl VMBridge {
    pub(crate) fn handle_modmul(
        _bridge: &mut VMBridge,
        context: &mut execution::ExecutionContext,
        _state: &mut state::StateManager,
        _storage: &mut storage::StorageManager,
        gas: &mut execution::GasTracker,
    ) -> Result<(), VMBridgeError> {
        gas.consume_gas("MODMUL", None)
            .map_err(|e| VMBridgeError::BridgeError {
                message: e.to_string(),
            })?;

        let modulus = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        let b = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        let a = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;

        let result = Self::modmul_stack_items(a, b, modulus)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }

    pub(crate) fn handle_modpow(
        _bridge: &mut VMBridge,
        context: &mut execution::ExecutionContext,
        _state: &mut state::StateManager,
        _storage: &mut storage::StorageManager,
        gas: &mut execution::GasTracker,
    ) -> Result<(), VMBridgeError> {
        gas.consume_gas("MODPOW", None)
            .map_err(|e| VMBridgeError::BridgeError {
                message: e.to_string(),
            })?;

        let modulus = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        let exponent = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        let base = context
            .pop_stack()
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;

        let result = Self::modpow_stack_items(base, exponent, modulus)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }
}