mirror of https://github.com/mruby/mruby synced 2026-06-08 16:11:16 +00:00

Files

T

Chris Hasiński 1e932dd161 Fix parse error with required kwargs and omitted parens

When defining a method with a required keyword argument without
parentheses, mruby incorrectly parsed the next line as the default
value:

    def foo arg:
      123
    end

Was parsed as: def foo(arg: 123); end  (optional kwarg, empty body)
Should be:     def foo(arg:); 123; end (required kwarg, body returns 123)

The fix sets EXPR_ARG lexer state after parsing f_label, making
newlines significant. This prevents the parser from consuming
expressions across line boundaries as default values for keyword
arguments.

Also fixes a pre-existing bug in f_label where tNUMPARAM (type <num>)
was implicitly assigned to $$ (type <id>) without conversion. Now
explicitly uses intern_numparam() to convert numbered parameters to
symbols.

Fixes https://github.com/mruby/mruby/issues/6268

2026-01-08 00:50:55 +01:00

core

Fix parse error with required kwargs and omitted parens

2026-01-08 00:50:55 +01:00

mrbgem.rake

Separating the build setup portion from the GEMS setup block

2025-09-11 22:53:06 +09:00

README.md

mruby-compiler: add README.md │

2025-07-02 07:14:04 +09:00

README.md

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