Class: Sass::Script::UnaryOperation

Inherits:

Node

• Object
• Node
• Sass::Script::UnaryOperation

show all

Defined in:

/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb

Overview

Instance Method Summary

• - (Literal) _perform(environment) protected Evaluates the operation.
• - (Array<Node>) children Returns the operand of the operation.
• - deep_copy
• - (UnaryOperation) initialize(operand, operator) constructor A new instance of UnaryOperation.
• - (String) inspect A human-readable s-expression representation of the operation.
• - to_sass(opts = {})

Methods inherited from Node

#dasherize, #opts, #perform

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 10

def initialize(operand, operator)
  @operand = operand
  @operator = operator
  super()
end

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 55

def _perform(environment)
  operator = "unary_#{@operator}"
  literal = @operand.perform(environment)
  literal.send(operator)
rescue NoMethodError => e
  raise e unless e.name.to_s == operator.to_s
  raise Sass::SyntaxError.new("Undefined unary operation: \"#{@operator} #{literal}\".")
end

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 37

def children
  [@operand]
end

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 42

def deep_copy
  node = dup
  node.instance_variable_set('@operand', @operand.deep_copy)
  node
end

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 17

def inspect
  "(#{@operator.inspect} #{@operand.inspect})"
end

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# File '/var/www/sass-pages/.sass/lib/sass/script/unary_operation.rb', line 22

def to_sass(opts = {})
  operand = @operand.to_sass(opts)
  if @operand.is_a?(Operation) ||
      (@operator == :minus &&
       (operand =~ Sass::SCSS::RX::IDENT) == 0)
    operand = "(#{@operand.to_sass(opts)})"
  end
  op = Lexer::OPERATORS_REVERSE[@operator]
  op + (op =~ /[a-z]/ ? " " : "") + operand
end