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  • ripper/tools/dsl.rb

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DSL

Simple DSL implementation for Ripper code generation

input: % ripper: stmts_add(stmts_new, void_stmt) %

output:

VALUE v1, v2;
v1 = dispatch0(stmts_new);
v2 = dispatch0(void_stmt);
$$ = dispatch2(stmts_add, v1, v2);

Attributes

events[R]

Public Class Methods

new(code, options) click to toggle source 
 
               # File ripper/tools/dsl.rb, line 11
def initialize(code, options)
  @events = {}
  @error = options.include?("error")
  @brace = options.include?("brace")
  if options.include?("final")
    @final = "p->result"
  else
    @final = (options.grep(/\A\$(?:\$|\d+)\z/)[0] || "$$")
  end
  @vars = 0

  # create $1 == "$1", $2 == "$2", ...
  s = (1..20).map {|n| "$#{n}"}
  re = Array.new(s.size, "([^\0]+)")
  /#{re.join("\0")}/ =~ s.join("\0")

  # struct parser_params *p
  p = p = "p"

  @code = ""
  @last_value = eval(code)
end