Class: Pure::Compiler::RubyParser

Inherits:
Object
  • Object
show all
Defined in:
lib/pure/compiler/ruby_parser.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RubyParser 



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# File 'lib/pure/compiler/ruby_parser.rb', line 14

def initialize
  @ruby2ruby = Ruby2Ruby.new
end

Instance Method Details

#compile_function(spec) ⇒ Object

Compiles a function spec extracted by Pure::Parser::RubyParser.

Returns an object which responds to spec.



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# File 'lib/pure/compiler/ruby_parser.rb', line 31

def compile_function(spec)
  sexp = (
    if spec[:origin] == :fun
      fun_to_define_method(spec[:name], spec[:code])
    else
      spec[:code]
    end
  )

  instance = Names.new(spec[:name], spec[:args])
  Thread.current[:pure_compiler_input] = @ruby2ruby.process(sexp)

  # use singleton to hide locals
  class << instance
    eval(Thread.current[:pure_compiler_input])
  end

  instance
end

#evaluate_function(spec, *args) ⇒ Object

Compiles and evaluates a function spec with arg values.



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# File 'lib/pure/compiler/ruby_parser.rb', line 21

def evaluate_function(spec, *args)
  compile_function(spec).send(spec[:name], *args)
end

#fun_to_define_method(name, sexp) ⇒ Object

Code-transform ‘fun’ definitions into ‘define_method’ definitions.



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# File 'lib/pure/compiler/ruby_parser.rb', line 54

def fun_to_define_method(name, sexp)
  s(:iter,
    s(:call, nil, :define_method, s(:arglist, s(:lit, name.to_sym))),
    sexp[2],
    sexp[3]
  )
end