Class: Ibex::Codegen::ActionSource

Inherits:
Object
  • Object
show all
Includes:
RubyAST
Defined in:
lib/ibex/codegen/action_source.rb

Overview

Generates static-check-only Ruby containing semantic action methods.

Instance Method Summary collapse

Constructor Details

#initialize(automaton, omit_action_call: nil) ⇒ ActionSource

Returns a new instance of ActionSource.



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# File 'lib/ibex/codegen/action_source.rb', line 19

def initialize(automaton, omit_action_call: nil)
  @automaton = automaton
  @grammar = automaton.grammar
  @omit_action_call = omit_action_call.nil? ? @grammar.options[:omit_action_call] : omit_action_call
  @method_source = ActionMethodSource.new(@grammar)
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/ibex/codegen/action_source.rb', line 27

def generate
  lines = [
    "# frozen_string_literal: true",
    "# Generated by Ibex #{grammar_digest_comment}.",
    "# Static-check-only semantic action shadow source.",
    "# DO NOT LOAD OR EXECUTE: runtime wiring and user code are intentionally absent.",
    ""
  ]
  modules, class_name = class_parts
  modules.each { |name| lines << "module #{name}" }
  lines << "class #{class_name}"
  append_ast(lines)
  append_value_printers(lines)
  append_actions(lines)
  lines << "end"
  modules.reverse_each { lines << "end" }
  "#{lines.join("\n")}\n"
end