def nest(words, fname):
"""Nest start/end tags into blocks recursively.
"""
# stack = [Tag('-program')]
stack = []
def prstack(): # pragma:nocover
"""Print stack contents.
"""
print "STACK:...."
for _item in stack:
print _item
while words:
word = words.pop(0)
# print "\WORD:", word
# prstack()
if is_endtag(word):
tagname = name(word)[3:]
# print "REDUCE", tagname
block = []
while 1:
item = stack.pop()
found = isinstance(item, Tag) and item.matches(word)
# print ' POPPED', item, 'FOUND' if found else ""
if found:
stack.append(Block(item.name, item, block[::-1]))
break
else:
block.append(item)
elif is_tag(word):
# print "SHIFT TAG", name(word)
tag = make_tag(words, name(word), content(word), fname)
stack.append(tag)
else:
# print "SHIFT VAL", word
stack.append(Value(content(word)))
return Block('program', Tag('program'), stack)
def matches(self, endtag):
return name(endtag)[3:] == self.name
