Class: Transform

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

Instance Method Summary collapse

Constructor Details

#initialize(inFd, outFd = $stdout) ⇒ Transform

Returns a new instance of Transform.



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# File 'lib/terrascript.rb', line 11

def initialize(inFd, outFd = $stdout)
  @in = inFd
  @out = outFd
  @mode = :read
  @argName = "block"
  @arg = ""
  @body = ""
end

Instance Method Details

#process ⇒ Object 



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# File 'lib/terrascript.rb', line 20

def process
  @in.each do |line|
    processLine line
  end
end

#processLine(line) ⇒ Object 



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# File 'lib/terrascript.rb', line 26

def processLine(line)
  case @mode

  when :read
    if line.lstrip.start_with?("@inline")
      args = line.split(' ')
      if !args[1].nil?
        @argName = args[1]
      end
      @mode = :body
    else
      @out.puts line
    end

  when :arg
    if line.lstrip.start_with?("@end")
      transform
      @arg = ""
      @body = ""
      @mode = :read
    else
      @arg << line
    end

  when :body
    @body << line
    if line.lstrip.start_with?("return")
      @mode = :arg
    end

  end
end

#transform ⇒ Object 



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# File 'lib/terrascript.rb', line 4

def transform
  s = $stdout
  $stdout = @out
  eval("lambda { |#{@argName}|\n#{@body}\n}").call(@arg)
  $stdout = s
end