Class: FixtureFox::Tokenizer

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file_or_text) ⇒ Tokenizer

Returns a new instance of Tokenizer.



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# File 'lib/fixture_fox/tokenizer.rb', line 12

def initialize(file_or_text)
  @lines = []

  # FIXME: Why @dev_proc ?
  if file_or_text =~ /\s/
    if caller[0] =~ /^(.*):(\d+):in `.*/
      file, @lineno = $1, $2.to_i - 1
      @file = Pathname.new(Pathname.new(file).expand_path).relative_path_from(Pathname.getwd).to_s
      @dev_proc = lambda { |&block| StringIO.open(file_or_text, &block) }
    else
      raise "Oops"
    end
  else
    @lineno = 0
    @file = file_or_text
    @dev_proc = lambda { |&block| File.open(@file, "r", &block) }
  end
end

Instance Attribute Details

#file ⇒ Object (readonly)

Minimum path to source file. Note that this is a ruby file if the source was inline



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# File 'lib/fixture_fox/tokenizer.rb', line 7

def file
  @file
end

#lines ⇒ Object (readonly)

Array of tokenized lines



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# File 'lib/fixture_fox/tokenizer.rb', line 10

def lines
  @lines
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/fixture_fox/tokenizer.rb', line 31

def call
  # Read source
  source = @dev_proc.call { |dev|
    dev.readlines.take_while { |l| l !~ /^__END__\s*$/ }
  }

  # Find initial indent
  while !source.empty? && source.first =~ /^\s*(?:#.*)?$/
    source.shift
    @lineno += 1
  end
  !source.empty? or return []
  @initial_indent = source.first[/\A */].size

  while !source.empty?
    line = source.shift
    @lineno += 1

    # Ignore blank lines and comments
    next if line =~ /^\s*(?:#.*)?$/

    # Find indent
    indent = line[/\A */].size - @initial_indent
    indent >= 0 or error("Illegal indent")

    # Strip prefixed and suffixed blanks
    line.strip!

    # Create
    if line =~ /^@/
      @lines << DirectiveLine.new(@file, @lineno, @initial_indent, indent, line)
    else
      @lines << Line.new(@file, @lineno, @initial_indent, indent, line)
    end
  end

  @lines
end

#dump(long: false) ⇒ Object 



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# File 'lib/fixture_fox/tokenizer.rb', line 70

def dump(long: false)
  @lines.each { |l| puts l.to_s(long: long) }
end

#error(msg) ⇒ Object

Raises:



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# File 'lib/fixture_fox/tokenizer.rb', line 74

def error(msg)
  raise ParseError.new(@file, @lineno, @initial_indent, msg)
end