Module: RBF

Defined in:
lib/rbf/syntax.rb,
lib/rbf.rb,
lib/rbf/jit.rb,
lib/rbf/parser.rb,
lib/rbf/jit/code.rb,
lib/rbf/optimizer.rb,
lib/rbf/interpreter.rb,
lib/rbf/interpreter/storage.rb

Overview

–

         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                 Version 2, December 2004

Copyleft meh. [http://meh.paranoid.pk | [email protected]]

         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. You just DO WHAT THE FUCK YOU WANT TO.

++

Defined Under Namespace

Modules: Syntax Classes: Interpreter, JIT, Optimizer, Parser, Transform

Class Method Summary collapse

Class Method Details

.[](text, syn = nil) ⇒ Object 



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# File 'lib/rbf.rb', line 83

def self.[] (text, syn=nil)
  evaluate(text, :catch => true, :syntax => syn)
end

.evaluate(text, options = nil) ⇒ Object 



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# File 'lib/rbf.rb', line 73

def self.evaluate (text, options=nil)
  options ||= {}

  Interpreter.new(options).evaluate(text)
end

.execute(file, options = {}) ⇒ Object 



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# File 'lib/rbf.rb', line 79

def self.execute (file, options={})
  evaluate(File.read(file), options)
end

.optimize(text, options = nil) ⇒ Object 



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# File 'lib/rbf.rb', line 67

def self.optimize (text, options=nil)
  options ||= {}

  Optimizer.new(options).optimize(text.is_a?(Array) ? text : parse(text.to_s, options[:syntax]))
end

.parse(text, syn = nil) ⇒ Object 



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# File 'lib/rbf.rb', line 62

def self.parse (text, syn=nil)
  Transform.new.apply(Parser.syntax(syntax(syn)).new.parse_with_debug(text)) or
    raise SyntaxError, 'There is a syntax error'
end

.repl(options = nil) ⇒ Object 



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# File 'lib/rbf.rb', line 87

def self.repl (options=nil)
  begin
    require 'colorb'
    require 'readline'
  rescue LoadError
    warn 'You need colorb and readline to use the REPL, install them.'

    return false
  end

  interpreter = Interpreter.new(options || {})

  while line = Readline.readline_with_hist_management
    line.rstrip!

    if line.start_with?('!')
      case line[1 .. -1]
        when 'exit', 'quit'
          break

        when 'storage'
          STDOUT.puts interpreter.storage.inspect

        when /^position(?:\s+(\d+))?$/
          if $1
            interpreter.storage.position = $1
          else
            STDOUT.puts interpreter.storage.position.to_s.bold
          end

        when /^get(?:\s+(\d+))?$/
          STDOUT.puts "#{($1 || interpreter.storage.position).to_s.bold}: #{interpreter.storage.get($1)}"

        when /^set(?:\s+(\d+)\s+(\d+))/
          interpreter.storage.set($2.to_i, $1.to_i)

        when 'clear'
          interpreter.storage.clear!

        when 'reset'
          interpreter.storage.reset!

        else
          STDOUT.puts 'Command not found or used improperly'.red
      end

      next
    end

    begin
      interpreter.evaluate(line, interpreter.options.merge(:output => Class.new {
        attr_reader :last

        def print (text)
          STDOUT.print(text)

          @last = text[-1]
        end

        def flush
          STDOUT.sync
        end
      }.new))

      puts if interpreter.output.last && interpreter.output.last != "\n"
    rescue SyntaxError
      next
    rescue
      STDOUT.puts $!.inspect.red, $@.join("\n")
    end
  end
  
  puts "\nExiting REPL."
end

.syntax(name) ⇒ Object 



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# File 'lib/rbf.rb', line 57

def self.syntax (name)
  name.is_a?(Hash) ? name :
    (RBF::Syntax.const_get(name.to_s.capitalize) rescue nil) || Syntax::Default
end