Class Sass::Script::UnaryOperation
In: lib/sass/script/unary_operation.rb
Parent: Node
Haml::Util Engine Color SyntaxError UnitConversionError StandardError Node Operation Literal UnaryOperation Funcall Variable Number String Bool EvaluationContext Node\n[lib/sass/css.rb\nlib/sass/tree/node.rb] DebugNode IfNode CommentNode ForNode MixinNode VariableNode ImportNode WhileNode MixinDefNode Repl CSS Environment Lexer Parser PropNode\n[lib/sass/css.rb\nlib/sass/tree/prop_node.rb] DirectiveNode\n[lib/sass/css.rb\nlib/sass/tree/directive_node.rb] RuleNode\n[lib/sass/css.rb\nlib/sass/tree/rule_node.rb] Rack lib/sass/repl.rb lib/sass/css.rb lib/sass/environment.rb lib/sass/error.rb lib/sass/engine.rb lib/sass/script/lexer.rb lib/sass/script/color.rb lib/sass/script/string.rb lib/sass/script/unary_operation.rb lib/sass/script/variable.rb lib/sass/script/funcall.rb lib/sass/script/operation.rb lib/sass/script/bool.rb lib/sass/script/parser.rb lib/sass/script/literal.rb lib/sass/script/node.rb lib/sass/script/number.rb lib/sass/script/functions.rb Functions Script Files lib/sass/tree/while_node.rb lib/sass/tree/if_node.rb lib/sass/tree/mixin_def_node.rb lib/sass/tree/debug_node.rb lib/sass/tree/for_node.rb lib/sass/tree/import_node.rb lib/sass/tree/prop_node.rb lib/sass/tree/node.rb lib/sass/tree/comment_node.rb lib/sass/tree/mixin_node.rb lib/sass/tree/directive_node.rb lib/sass/tree/rule_node.rb lib/sass/tree/variable_node.rb Tree lib/sass/plugin/rack.rb Plugin Sass dot/m_54_0.png

A SassScript parse node representing a unary operation, such as `-!b` or `not true`.

Currently only `-`, `/`, and `not` are unary operators.

Methods

inspect   new   perform  

Public Class methods

@param operand [Script::Node] The parse-tree node

  for the object of the operator

@param operator [Symbol] The operator to perform

[Source]

    # File lib/sass/script/unary_operation.rb, line 10
10:     def initialize(operand, operator)
11:       @operand = operand
12:       @operator = operator
13:     end

Public Instance methods

@return [String] A human-readable s-expression representation of the operation

[Source]

    # File lib/sass/script/unary_operation.rb, line 16
16:     def inspect
17:       "(#{@operator.inspect} #{@operand.inspect})"
18:     end

Evaluates the operation.

@param environment [Sass::Environment] The environment in which to evaluate the SassScript @return [Literal] The SassScript object that is the value of the operation @raise [Sass::SyntaxError] if the operation is undefined for the operand

[Source]

    # File lib/sass/script/unary_operation.rb, line 25
25:     def perform(environment)
26:       operator = "unary_#{@operator}"
27:       literal = @operand.perform(environment)
28:       literal.send(operator)
29:     rescue NoMethodError => e
30:       raise e unless e.name.to_s == operator.to_s
31:       raise Sass::SyntaxError.new("Undefined unary operation: \"#{@operator} #{literal}\".")
32:     end

[Validate]