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Contents
require File.join(File.dirname(__FILE__), 'functions')
module Sass
module Script
# A SassScript parse node representing a function call.
#
# A function call either calls one of the functions in {Script::Functions},
# or if no function with the given name exists
# it returns a string representation of the function call.
class Funcall < Node
# The name of the function.
#
# @return [String]
attr_reader :name
# The arguments to the function.
#
# @return [Array<Script::Node>]
attr_reader :args
# @param name [String] See \{#name}
# @param name [Array<Script::Node>] See \{#args}
def initialize(name, args)
@name = name
@args = args
end
# @return [String] A string representation of the function call
def inspect
"#{name}(#{args.map {|a| a.inspect}.join(', ')})"
end
# Evaluates the function call.
#
# @param environment [Sass::Environment] The environment in which to evaluate the SassScript
# @return [Literal] The SassScript object that is the value of the function call
# @raise [Sass::SyntaxError] if the function call raises an ArgumentError
def perform(environment)
args = self.args.map {|a| a.perform(environment)}
ruby_name = name.gsub('-', '_')
unless Haml::Util.has?(:public_instance_method, Functions, ruby_name) && ruby_name !~ /^__/
return Script::String.new("#{name}(#{args.map {|a| a.perform(environment)}.join(', ')})")
end
return Functions::EvaluationContext.new(environment.options).send(ruby_name, *args)
rescue ArgumentError => e
raise e unless e.backtrace.any? {|t| t =~ /:in `(block in )?(#{name}|perform)'$/}
raise Sass::SyntaxError.new("#{e.message} for `#{name}'")
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems