Class: LexerKit::Debug::Disassembler

Inherits:
Object
  • Object
show all
Defined in:
lib/lexer_kit/debug/disassembler.rb

Overview

Disassembler for CompiledProgram instructions

Instance Method Summary collapse

Constructor Details

#initialize(program) ⇒ Disassembler

Returns a new instance of Disassembler.



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# File 'lib/lexer_kit/debug/disassembler.rb', line 9

def initialize(program)
  @program = program
end

Instance Method Details

#disassemble(io: nil) ⇒ String

Disassemble all instructions

Parameters:

  • io (IO) (defaults to: nil) —

    output stream (default: StringIO)

Returns:

  • (String) —

    disassembled output



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# File 'lib/lexer_kit/debug/disassembler.rb', line 16

def disassemble(io: nil)
  output = io || StringIO.new

  # Header
  output.puts "# LexerKit Disassembly"
  output.puts "# Version: #{@program.version}"
  output.puts "# Instructions: #{@program.instructions.size}"
  output.puts "# Tokens: #{@program.token_names.join(', ')}"
  output.puts "# Modes: #{@program.mode_names.join(', ')}"
  output.puts

  # Mode labels
  mode_labels = {}
  @program.mode_offsets.each do |name, offset|
    mode_labels[offset] = name
  end

  # Disassemble each instruction
  @program.instructions.each_with_index do |instr, offset|
    # Mode label
    if mode_labels[offset]
      output.puts
      output.puts "#{mode_labels[offset]}:"
    end

    line = format_instruction(offset, instr)
    output.puts line
  end

  io ? nil : output.string
end