Crate nu_engine

This crate primarily drives the evaluation of expressions.

(Some overlap with nu-protocol)

• Provides CallExt

Internal Nushell crate

This crate implements components of Nushell and is not designed to support plugin authors or other users directly.

Re-exports

• pub use column::get_columns;
• pub use documentation::get_full_help;
• pub use env::*;

Modules

• column
• command_prelude
• documentation
• env
• scope

Structs

• ClosureEval
  ClosureEval is used to repeatedly evaluate a closure with different values/inputs.
• ClosureEvalOnce
  ClosureEvalOnce is used to evaluate a closure a single time.

Traits

• CallExt

Functions

• compile
  Compile Nushell pipeline abstract syntax tree (AST) to internal representation (IR) instructions for evaluation.
• eval_block
• eval_block_with_early_return
• eval_call
• eval_expression
• eval_expression_with_input
  Checks the expression to see if it’s a internal or external call. If so, passes the input into the call and gets out the result Otherwise, invokes the expression
• eval_ir_block
  Evaluate the compiled representation of a Block.
• eval_subexpression
• eval_variable
• get_eval_block
  Helper function to fetch eval_block() with the correct type parameter based on whether engine_state is configured with or without a debugger.
• get_eval_block_with_early_return
  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.
• get_eval_expression
  Helper function to fetch eval_expression() with the correct type parameter based on whether engine_state is configured with or without a debugger.
• get_eval_expression_with_input
  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.
• get_eval_ir_block
  Helper function to fetch eval_ir_block() with the correct type parameter based on whether engine_state is configured with or without a debugger.
• get_eval_subexpression
  Helper function to fetch eval_subexpression() with the correct type parameter based on whether engine_state is configured with or without a debugger.
• glob_from
  This function is like nu_glob::glob from the glob crate, except it is relative to a given cwd.
• redirect_env
  Redirect the environment from callee to the caller.

Type Aliases

• EvalBlockFn
  Type of eval_block() function
• EvalBlockWithEarlyReturnFn
  Type of eval_block_with_early_return() function
• EvalExpressionFn
  Type of eval_expression() function
• EvalExpressionWithInputFn
  Type of eval_expression_with_input() function
• EvalIrBlockFn
  Type of eval_ir_block() function
• EvalSubexpressionFn
  Type of eval_subexpression() function