Files
nushell/crates/nu-engine/src/eval_helpers.rs
2025-05-13 16:49:30 +02:00

94 lines
3.5 KiB
Rust

use crate::{
eval_block, eval_block_with_early_return, eval_expression, eval_expression_with_input,
eval_ir_block, eval_subexpression,
};
use nu_protocol::{
PipelineData, ShellError, Value,
ast::{Block, Expression},
debugger::{WithDebug, WithoutDebug},
engine::{EngineState, Stack},
};
/// Type of eval_block() function
pub type EvalBlockFn =
fn(&EngineState, &mut Stack, &Block, PipelineData) -> Result<PipelineData, ShellError>;
/// Type of eval_ir_block() function
pub type EvalIrBlockFn =
fn(&EngineState, &mut Stack, &Block, PipelineData) -> Result<PipelineData, ShellError>;
/// Type of eval_block_with_early_return() function
pub type EvalBlockWithEarlyReturnFn =
fn(&EngineState, &mut Stack, &Block, PipelineData) -> Result<PipelineData, ShellError>;
/// Type of eval_expression() function
pub type EvalExpressionFn = fn(&EngineState, &mut Stack, &Expression) -> Result<Value, ShellError>;
/// Type of eval_expression_with_input() function
pub type EvalExpressionWithInputFn =
fn(&EngineState, &mut Stack, &Expression, PipelineData) -> Result<PipelineData, ShellError>;
/// Type of eval_subexpression() function
pub type EvalSubexpressionFn =
fn(&EngineState, &mut Stack, &Block, PipelineData) -> Result<PipelineData, ShellError>;
/// Helper function to fetch `eval_block()` with the correct type parameter based on whether
/// engine_state is configured with or without a debugger.
pub fn get_eval_block(engine_state: &EngineState) -> EvalBlockFn {
if engine_state.is_debugging() {
eval_block::<WithDebug>
} else {
eval_block::<WithoutDebug>
}
}
/// Helper function to fetch `eval_ir_block()` with the correct type parameter based on whether
/// engine_state is configured with or without a debugger.
pub fn get_eval_ir_block(engine_state: &EngineState) -> EvalIrBlockFn {
if engine_state.is_debugging() {
eval_ir_block::<WithDebug>
} else {
eval_ir_block::<WithoutDebug>
}
}
/// Helper function to fetch `eval_block_with_early_return()` with the correct type parameter based
/// on whether engine_state is configured with or without a debugger.
pub fn get_eval_block_with_early_return(engine_state: &EngineState) -> EvalBlockWithEarlyReturnFn {
if engine_state.is_debugging() {
eval_block_with_early_return::<WithDebug>
} else {
eval_block_with_early_return::<WithoutDebug>
}
}
/// Helper function to fetch `eval_expression()` with the correct type parameter based on whether
/// engine_state is configured with or without a debugger.
pub fn get_eval_expression(engine_state: &EngineState) -> EvalExpressionFn {
if engine_state.is_debugging() {
eval_expression::<WithDebug>
} else {
eval_expression::<WithoutDebug>
}
}
/// Helper function to fetch `eval_expression_with_input()` with the correct type parameter based
/// on whether engine_state is configured with or without a debugger.
pub fn get_eval_expression_with_input(engine_state: &EngineState) -> EvalExpressionWithInputFn {
if engine_state.is_debugging() {
eval_expression_with_input::<WithDebug>
} else {
eval_expression_with_input::<WithoutDebug>
}
}
/// Helper function to fetch `eval_subexpression()` with the correct type parameter based on whether
/// engine_state is configured with or without a debugger.
pub fn get_eval_subexpression(engine_state: &EngineState) -> EvalSubexpressionFn {
if engine_state.is_debugging() {
eval_subexpression::<WithDebug>
} else {
eval_subexpression::<WithoutDebug>
}
}