Files
mruby-mruby/mrbgems/mruby-compiler
Yukihiro "Matz" Matsumoto 40264c9aad mruby-compiler: accept double-quoted strings in case/in patterns
The p_value rule only accepted bare tSTRING tokens, which the lexer
emits for single-quoted strings.  Double-quoted strings emit
tSTRING_BEG ... tSTRING (or with interpolation, tSTRING_BEG
string_rep tSTRING), so

  case "hello"
  in "hello"
    :match
  end

raised "syntax error, unexpected string literal" at the `"` after
`in`.  Use the existing `string` non-terminal instead of bare
tSTRING, which also enables alternation (`"a" | "b"`), interpolation
(`"hel#{x}"`), and concatenation by juxtaposition in patterns.

close #6830

Co-authored-by: Claude <noreply@anthropic.com>
2026-05-16 22:01:52 +09:00
..
2025-07-02 07:14:04 +09:00

mruby-compiler

This mrbgem provides the mruby compiler, which is responsible for parsing Ruby code and generating mruby bytecode.

Functionality

The mruby-compiler gem includes the following components:

  • Parser: Translates Ruby source code into an abstract syntax tree (AST).
  • Code Generator: Traverses the AST to produce executable mruby bytecode.
  • mrbc executable: A command-line tool for compiling .rb files into .mrb bytecode files.

Usage

The mrbc (mruby-bin-mrbc) executable will generate compiled binary from Ruby programs via this gem.

Example of using mrbc:

# Compile a Ruby script to bytecode
bin/mrbc my_script.rb

# Run the compiled script
bin/mruby my_script.mrb