gsh/evaluator/docs

The docs module powers the shell’s built-in documentation engine.

It dynamically locates, reads, and lexes Gleam source files on demand to extract module-level (////) and function-level (///) docstrings. It then renders these raw strings into formatted, ANSI-colored terminal output for quick reference.

Values

pub fn get_function_help(
  module_path: String,
  func_name: String,
) -> String

Extracts and formats documentation and type signatures for a specific function (e.g., h simplifile.append).

Extraction Logic:

  • Lexes the target module and scans sequentially for the target function name.
  • Captures the preceding block of CommentDoc (///) strings.
  • Captures the exact function signature tokens up to the opening curly brace.
  • Renders the signature in green, followed by the formatted Markdown description.
pub fn get_module_help(module_path: String) -> String

Extracts and formats the top-level module documentation (e.g., h simplifile).

Extraction Logic:

  • Locates the module’s .gleam source file on disk.
  • Lexes the raw source and filters out all tokens except CommentModule (////).
  • Renders a centered, bolded title followed by the parsed Markdown description.
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