Class: AutoBind

Inherits:
Object show all
Defined in:
lib/goat/autobind.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(inp, out) ⇒ AutoBind

Returns a new instance of AutoBind.



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# File 'lib/goat/autobind.rb', line 4

def initialize(inp, out)
  @inp = inp
  @out = out
end

Class Method Details

.process(str) ⇒ Object 



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# File 'lib/goat/autobind.rb', line 9

def self.process(str)
  out = StringIO.new
  new(StringIO.new(str), out).process
  out.string
end

Instance Method Details

#expand(c) ⇒ Object 



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# File 'lib/goat/autobind.rb', line 46

def expand(c)
  @out.write("(closure(this, function(")
  
  if c == ?(
    while (c2 = @inp.getc) != ?)
      @out.putc c2
    end
    while @inp.getc != ?{
      nil
    end
  end
  
  @out.write("){")
  process
  @out.write("))")
end

#process ⇒ Object 



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# File 'lib/goat/autobind.rb', line 15

def process
  brace_count = 0
  while char = @inp.getc
    case char
    when ?^
      char2 = @inp.getc
      if char2 == ?{ || char2 == ?(
        expand(char2)
      else
        brace_count += 1
        @out.putc char
        @out.putc char2 if char2
      end
    when ?{
      brace_count += 1
      @out.putc char
    when ?}
      brace_count -= 1
      @out.putc char
      if brace_count < 0
        return
      end
    when ?", ?'
      @out.putc char
      string(char)
    else
      @out.putc char
    end
  end
end

#string(delim) ⇒ Object 



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# File 'lib/goat/autobind.rb', line 63

def string(delim)
  while char = @inp.getc
    case char
    when ?\\
      char2 = @inp.getc
      @out.putc char
      @out.putc char2 if char2
    when delim
      @out.putc char
      return
    else
      @out.putc char
    end
  end
end