Class: Brainfuck::Main

Inherits:
Object
  • Object
show all
Defined in:
lib/brainfuck/main.rb

Overview

Command line interface to Brainfuck.

Currently we only take a brainfuck source name to compile and run.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Main

Returns a new instance of Main.



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# File 'lib/brainfuck/main.rb', line 12

def initialize
  @print = Compiler::Print.new
  @compile_only = false
  @evals = []
  @rest = []
end

Instance Method Details

#compile ⇒ Object

Batch compile all brainfuck files given as arguments.



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# File 'lib/brainfuck/main.rb', line 27

def compile
  @rest.each do |bf|
    begin
      Compiler.compile_file bf, nil, @print
    rescue Compiler::Error => e
      e.show
    end
  end
end

#evals ⇒ Object

Evaluate code given on command line



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# File 'lib/brainfuck/main.rb', line 38

def evals
  bnd = Object.new
  def bnd.get; binding; end
  bnd = bnd.get
  mod = nil
  @evals.each do |code|
    CodeLoader.execute_code code, bnd, mod, @print
  end
end

#main(argv = ARGV) ⇒ Object 



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# File 'lib/brainfuck/main.rb', line 19

def main(argv=ARGV)
  options(argv)
  evals unless @evals.empty?
  script unless @rest.empty?
  compile if @compile_only
end

#options(argv) ⇒ Object

Parse command line options



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# File 'lib/brainfuck/main.rb', line 54

def options(argv)
  options = Rubinius::Options.new "Usage: brainfuck [options] [program]", 20
  options.doc "Brainfuck is a Brainfuck implementation for the Rubinius VM."
  options.doc ""
  options.doc "OPTIONS:"

  # options.on "-", "Read and evalute code from STDIN" do
  #   @evals << STDIN.read
  # end

  # options.on "--print-ast", "Print the Brainfuck AST" do
  #   @print.ast = true
  # end

  # options.on "--print-asm", "Print the Rubinius ASM" do
  #   @print.asm = true
  # end

  # options.on "--print-sexp", "Print the Brainfuck Sexp" do
  #   @print.sexp = true
  # end

  # options.on "--print-all", "Print Sexp, AST and Rubinius ASM" do
  #   @print.ast = @print.asm = @print.sexp = true
  # end

  options.on "-C", "--compile", "Just batch compile dont execute." do
    @compile_only = true
  end
# 
#       options.on "-e", "CODE", "Execute CODE" do |e|
#         @evals << e
#       end

  options.on "-h", "--help", "Display this help" do
    puts options
    exit 0
  end

  options.doc ""

  @rest = options.parse(argv)
end

#script ⇒ Object

Run the given script if any



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# File 'lib/brainfuck/main.rb', line 49

def script
  CodeLoader.execute_file @rest.first, nil, @print
end