64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
# -*- coding: utf8 -*-
|
|
"""
|
|
.. module:: lesscpy.plib.deferred
|
|
:synopsis: Deferred mixin call.
|
|
|
|
Copyright (c)
|
|
See LICENSE for details.
|
|
.. moduleauthor:: Jóhann T. Maríusson <jtm@robot.is>
|
|
"""
|
|
from .node import Node
|
|
from lesscpy.lessc import utility
|
|
|
|
class Deferred(Node):
|
|
def __init__(self, mixin, args, lineno=0):
|
|
"""This node represents mixin calls. The calls
|
|
to these mixins are deferred until the second
|
|
parse cycle.
|
|
args:
|
|
mixin (Mixin): Mixin object
|
|
args (list): Call arguments
|
|
"""
|
|
self.tokens = [mixin, args]
|
|
self.lineno = lineno
|
|
|
|
def parse(self, scope, error=False):
|
|
""" Parse function. We search for mixins
|
|
first within current scope then fallback
|
|
to global scope. The special scope.deferred
|
|
is used when local scope mixins are called
|
|
within parent mixins.
|
|
args:
|
|
scope (Scope): Current scope
|
|
returns:
|
|
mixed
|
|
"""
|
|
res = False
|
|
ident, args = self.tokens
|
|
ident.parse(scope)
|
|
mixins = scope.mixins(ident.raw())
|
|
if not mixins:
|
|
ident.parse(None)
|
|
mixins = scope.mixins(ident.raw())
|
|
if not mixins:
|
|
if scope.deferred:
|
|
scope.current = scope.deferred
|
|
ident.parse(scope)
|
|
mixins = scope.mixins(ident.raw())
|
|
scope.current = None
|
|
if mixins:
|
|
for mixin in mixins:
|
|
res = mixin.call(scope, args)
|
|
if res: break
|
|
if res:
|
|
scope.deferred = ident
|
|
res = [p.parse(scope) for p in res if p]
|
|
while(any(t for t in res if type(t) is Deferred)):
|
|
res = [p.parse(scope) for p in res if p]
|
|
scope.deferred = None
|
|
if error and not res:
|
|
raise SyntaxError('NameError `%s`' % mixin.raw(True))
|
|
return res
|
|
|
|
|