Crate frost_exec 

Command execution engine for frost.

Takes an AST produced by frost-parser and executes it, managing processes, pipelines, redirections, and the shell environment.

Platform-specific system calls are isolated in the sys module so the rest of the engine remains portable across Unix variants.

Re-exports

pub use env::ShellEnv;

pub use execute::Executor;

pub use job::Job;

pub use job::JobTable;

Modules

env

Shell environment — variables, functions, aliases, and process state.

execute

The main execution engine.

job

Job control — tracking background and suspended processes.

redirect

Redirection handling — applies I/O redirections via dup2(2).

sys

Platform abstraction layer.

Functions

execute

Convenience entry point: create a fresh environment, execute the program, and return the exit status.