Module: Sass::Constant

Defined in:
lib/gems/haml-2.0.4/lib/sass/constant.rb,
lib/gems/haml-2.0.4/lib/sass/constant/nil.rb,
lib/gems/haml-2.0.4/lib/sass/constant/color.rb,
lib/gems/haml-2.0.4/lib/sass/constant/number.rb,
lib/gems/haml-2.0.4/lib/sass/constant/string.rb,
lib/gems/haml-2.0.4/lib/sass/constant/literal.rb,
lib/gems/haml-2.0.4/lib/sass/constant/operation.rb

Overview

:nodoc:

Defined Under Namespace

Classes: Color, Literal, Nil, Number, Operation, String

Constant Summary collapse

CONSTANT_CHAR =

The character that begins a constant.

?!
WHITESPACE =

Whitespace characters

[?\ , ?\t, ?\n, ?\r]
ESCAPE_CHAR =

The character used to escape values

?\\
STRING_CHAR =

The character used to open and close strings

?"
SYMBOLS =

A mapping of syntactically-significant characters to parsed symbols

{
  ?( => :open,
  ?) => :close,
  ?+ => :plus,
  ?- => :minus,
  ?* => :times,
  ?/ => :div,
  ?% => :mod,
  CONSTANT_CHAR => :const,
  STRING_CHAR => :str,
  ESCAPE_CHAR => :esc
}
MATCH =

The regular expression used to parse constants

/^#{Regexp.escape(CONSTANT_CHAR.chr)}([^\s#{(SYMBOLS.keys + [ ?= ]).map {|c| Regexp.escape("#{c.chr}") }.join}]+)\s*((?:\|\|)?=)\s*(.+)/
FIRST_ORDER =

First-order operations

[:times, :div, :mod]
SECOND_ORDER =

Second-order operations

[:plus, :minus]

Class Method Summary collapse

Class Method Details

.parse(value, constants, line) ⇒ Object 



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# File 'lib/gems/haml-2.0.4/lib/sass/constant.rb', line 43

def parse(value, constants, line)
  begin
    operationalize(parenthesize(tokenize(value)), constants).to_s
  rescue Sass::SyntaxError => e
    if e.message == "Constant arithmetic error"
      e.instance_eval do
        @message += ": #{value.dump}."
      end
    end
    e.sass_line = line
    raise e
  end
end