Class: Sass::Script::Functions::EvaluationContext

Inherits:
Object
  • Object
show all
Defined in:
lib/sass/script/functions.rb

Overview

The context in which methods in Sass::Script::Functions are evaluated. That means that all instance methods of EvaluationContext are available to use in functions.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ EvaluationContext

Returns a new instance of EvaluationContext.

Parameters:

  • options ({Symbol => Object}) —

    See #options



179
180
181
182
183
184
185
 
# File 'lib/sass/script/functions.rb', line 179

def initialize(options)
  @options = options

  # We need to include this individually in each instance
  # because of an icky Ruby restriction
  class << self; include Sass::Script::Functions; end
end

Instance Attribute Details

#options ⇒ {Symbol => Object} (readonly)

The options hash for the Engine that is processing the function call

Returns:

  • ({Symbol => Object}) 


176
177
178
 
# File 'lib/sass/script/functions.rb', line 176

def options
  @options
end

Instance Method Details

#assert_type(value, type)

Asserts that the type of a given SassScript value is the expected type (designated by a symbol). For example:

assert_type value, :String
assert_type value, :Number

Valid types are :Bool, :Color, :Number, and :String. Note that :String will match both double-quoted strings and unquoted identifiers.

Parameters:

  • value (Sass::Script::Literal) —

    A SassScript value

  • type (Symbol) —

    The name of the type the value is expected to be

Raises:

  • (ArgumentError) 


200
201
202
203
 
# File 'lib/sass/script/functions.rb', line 200

def assert_type(value, type)
  return if value.is_a?(Sass::Script.const_get(type))
  raise ArgumentError.new("#{value.inspect} is not a #{type.to_s.downcase}")
end