bytecode_introspection_mod

🧱 Bytecode Introspection with RubyVM::InstructionSequence

Inspect or even rewrite Ruby bytecode at runtime via RubyVM::InstructionSequence. You can parse, disassemble, and recompile snippets to fine-tune performance-critical methods.

code = <<~RUBY
  def heavy_compute(x)
    (1..x).reduce(:*)
  end
RUBY

iseq = RubyVM::InstructionSequence.compile(code)
puts iseq.disasm
# Optionally, rebind modified iseq to a class
MyClass = iseq.eval
puts MyClass.new.heavy_compute(5)  # => 120