Class: Rattler::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/rattler/runner.rb

Overview

Rattler::Runner defines the command-line parser generator.

Constant Summary collapse

ERRNO_USAGE =

Invalid command line arguments

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ERRNO_READ_ERROR =

Error reading grammar file

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ERRNO_WRITE_ERROR =

Error writing parser file

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ERRNO_PARSE_ERROR =

Error parsing grammar

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ERRNO_GEN_ERROR =

Error generaing ruby code

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Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Runner

Create a new command-line parser.

Parameters:

  • args (Array) —

    the command-line arguments



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# File 'lib/rattler/runner.rb', line 32

def initialize(args)
  @standalone = false
  @optimize = true
  options.parse!(args)
  if args.size == 1
    @srcfname = Pathname.new(args.shift)
  else
    puts options
    exit ERRNO_USAGE
  end
end

Class Method Details

.run(args) ⇒ Object

Run the command-line parser

Parameters:

  • args (Array) —

    the command-line arguments



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# File 'lib/rattler/runner.rb', line 25

def self.run(args)
  self.new(args).run
end

Instance Method Details

#run ⇒ Object

Run the command-line parser.



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# File 'lib/rattler/runner.rb', line 45

def run
  if result = analyze
    synthesize(result)
  else
    puts parser.failure
    exit ERRNO_PARSE_ERROR
  end
end