neo-devpack-solidity 0.22.0

Production-focused Solidity-to-NeoVM compilation system
Documentation 
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use super::*;

impl VMBridge {
    pub(crate) fn handle_and(
        _bridge: &mut VMBridge,
        context: &mut execution::ExecutionContext,
        _state: &mut state::StateManager,
        _storage: &mut storage::StorageManager,
        gas: &mut execution::GasTracker,
    ) -> Result<(), VMBridgeError> {
        gas.consume_gas("AND", None)
            .map_err(|e| VMBridgeError::BridgeError {
                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::and_stack_items(a, b)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }

    pub(crate) fn handle_or(
        _bridge: &mut VMBridge,
        context: &mut execution::ExecutionContext,
        _state: &mut state::StateManager,
        _storage: &mut storage::StorageManager,
        gas: &mut execution::GasTracker,
    ) -> Result<(), VMBridgeError> {
        gas.consume_gas("OR", None)
            .map_err(|e| VMBridgeError::BridgeError {
                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::or_stack_items(a, b)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }

    pub(crate) fn handle_xor(
        _bridge: &mut VMBridge,
        context: &mut execution::ExecutionContext,
        _state: &mut state::StateManager,
        _storage: &mut storage::StorageManager,
        gas: &mut execution::GasTracker,
    ) -> Result<(), VMBridgeError> {
        gas.consume_gas("XOR", None)
            .map_err(|e| VMBridgeError::BridgeError {
                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::xor_stack_items(a, b)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }

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

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

        let result = Self::shift_left_value(value, shift)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }

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

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

        let result = Self::shift_right_value(value, shift)?;
        context
            .push_stack(result)
            .map_err(|e| VMBridgeError::StackOperationFailed {
                message: e.to_string(),
            })?;
        Ok(())
    }
}