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module Sass::Script::Value
# A SassScript object representing a `false` value that came from a call to
# `index()`. It will print deprecation warnings if it's used with `==`.
class DeprecatedFalse < Bool
def self.new(environment)
obj = allocate
obj.send(:initialize, environment)
obj
end
def initialize(environment)
@value = false
@global_env = environment.global_env
if (frame = environment.stack.frames.last)
@filename = frame.filename
@line = frame.line
end
end
def eq(other)
if other.value == false && !warned?
self.warned = true
Sass::Util.sass_warn <<WARNING + @global_env.stack.to_s.gsub(/^/, ' ')
DEPRECATION WARNING: The return value of index() will change from "false" to
"null" in future versions of Sass. For compatibility, avoid using "== false" on
the return value. For example, instead of "@if index(...) == false", just write
"@if index(...)".
WARNING
end
Bool.new(other.value == false)
end
def neq(other)
if other.value.nil? && !warned?
self.warned = true
Sass::Util.sass_warn <<WARNING + @global_env.stack.to_s.gsub(/^/, ' ')
DEPRECATION WARNING: The return value of index() will change from "false" to
"null" in future versions of Sass. For compatibility, avoid using "!= null" on
the return value.
WARNING
end
Bool.new(other.value != false)
end
private
def warned?
@global_env.deprecated_false_warning_given.include?([@filename, @line])
end
def warned=(value)
@global_env.deprecated_false_warning_given << [@filename, @line]
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems