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# Ignore documentation lints as these aren't original implementations.
# rubocop:disable Documentation
module Sass::Script
# Since the Sass library is already loaded at this point.
# Define the `node_name` and `visit_method` class methods for each Sass Script
# parse tree node type so that our custom visitor can seamless traverse the
# tree.
#
# This would be easier if we could just define an `inherited` callback, but
# that won't work since the Sass library will have already been loaded before
# this code gets loaded, so the `inherited` callback won't be fired.
#
# Thus we are left to manually define the methods for each type explicitly.
{
'Value' => %w[ArgList Bool Color List Map Null Number String],
'Tree' => %w[Funcall Interpolation ListLiteral Literal MapLiteral
Operation StringInterpolation UnaryOperation Variable],
}.each do |namespace, types|
types.each do |type|
node_name = type.downcase
eval <<-DECL
class #{namespace}::#{type}
def self.node_name
:script_#{node_name}
end
def self.visit_method
:visit_script_#{node_name}
end
end
DECL
end
end
class Value::Base
attr_accessor :node_parent
def children
[]
end
def line
@line || (node_parent && node_parent.line)
end
def source_range
@source_range || (node_parent && node_parent.source_range)
end
end
# Contains extensions of Sass::Script::Tree::Nodes to add support for
# accessing various parts of the parse tree not provided out-of-the-box.
module Tree
class Node
attr_accessor :node_parent
end
class Literal
# Literals wrap their underlying values. For sake of convenience, consider
# the wrapped value a child of the Literal.
def children
[value]
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems