76 lines
2.0 KiB
Python
76 lines
2.0 KiB
Python
# -*- coding: utf8 -*-
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"""
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.. module:: lesscpy.plib.node
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:synopsis: Base Node
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Copyright (c)
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See LICENSE for details.
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.. moduleauthor:: Jóhann T. Maríusson <jtm@robot.is>
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"""
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from lesscpy.lessc import utility
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class Node(object):
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def __init__(self, tokens, lineno=0):
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""" Base Node
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args:
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tokens (list): tokenlist
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lineno (int): Line number of node
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"""
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self.tokens = tokens
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self.lineno = lineno
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self.parsed = False
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def parse(self, scope):
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""" Base parse function
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args:
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scope (Scope): Scope object
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returns:
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self
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"""
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return self
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def process(self, tokens, scope):
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""" Process tokenslist, flattening and parsing it
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args:
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tokens (list): tokenlist
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scope (Scope): Scope object
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returns:
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list
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"""
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while True:
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tokens = list(utility.flatten(tokens))
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done = True
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if any(t for t in tokens if hasattr(t, 'parse')):
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tokens = [t.parse(scope)
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if hasattr(t, 'parse')
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else t
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for t in tokens]
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done = False
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if any(t for t in tokens if utility.is_variable(t)):
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tokens = self.replace_variables(tokens, scope)
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done = False
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if done: break
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return tokens
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def replace_variables(self, tokens, scope):
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""" Replace variables in tokenlist
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args:
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tokens (list): tokenlist
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scope (Scope): Scope object
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returns:
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list
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"""
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return [scope.swap(t)
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if utility.is_variable(t)
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else t
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for t in tokens]
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def fmt(self, fills):
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""" Format node
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args:
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fills (dict): replacements
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returns:
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str
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"""
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raise ValueError('No defined format')
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