def gbr(token_stream):
skip_token(token_stream)
br = SelfClosingTagNode("<br>")
if accept_token(token_stream, Token.Tag.BlockTag):
return None
if accept_token(token_stream, Token.Tag.Close):
return None
return br
def ginline_tag(token_stream):
inline_tag = InlineTagNode(token_stream.value)
while True:
if accept_token(token_stream, Token.Tag.Close): # assume correctly nested and closed tags
skip_token(token_stream)
return inline_tag
elif accept_token(token_stream, Token.Par):
skip_token(token_stream)
elif accept_token(token_stream, Token.Br):
inline_tag.append(gbr(token_stream))
elif accept_token(token_stream, Token.Literal):
inline_tag.append(LiteralNode(token_stream.value))
elif accept_token(token_stream, Token.Comment):
inline_tag.append(CommentNode(token_stream.value))
elif accept_token(token_stream, Token.Text):
inline_tag.append(TextNode(token_stream.value))
elif accept_token(token_stream, Token.Tag.SelfClosingTag):
inline_tag.append(SelfClosingTagNode(token_stream.value))
elif accept_token(token_stream, Token.Tag.InlineTag):
nested_inline_tag = ginline_tag(token_stream)
inline_tag.append(nested_inline_tag)
elif accept_token(token_stream, Token.Tag.BlockTag):
return inline_tag
else:
return inline_tag
def gblock(token_stream):
block = BlockTagNode(token_stream.value)
tag_name = extract_tag_name(block.value)
while True:
if accept_token(token_stream, Token.Tag.Close): #assume correctly nested and closed tags
skip_token(token_stream)
return block
elif accept_token(token_stream, Token.Par):
skip_token(token_stream)
elif accept_token(token_stream, Token.Br):
if tag_name in RESPECT_BR:
block.append(SelfClosingTagNode('<br>'))
skip_token(token_stream)
elif accept_token(token_stream, Token.Literal):
block.append(LiteralNode(token_stream.value))
elif accept_token(token_stream, Token.Comment):
block.append(CommentNode(token_stream.value))
elif accept_token(token_stream, Token.Text):
block.append(block_try_p(tag_name, token_stream, TextNode))
elif accept_token(token_stream, Token.Tag.SelfClosingTag):
block.append(block_try_p(tag_name, token_stream, SelfClosingTagNode))
elif accept_token(token_stream, Token.Tag.InlineTag):
block.append(block_try_p(tag_name, token_stream, InlineTagNode, ginline_tag))
elif accept_token(token_stream, Token.Tag.BlockTag):
nested_block = gblock(token_stream)
block.append(nested_block)
else:
return block
def gdocument(token_stream):
root = DocumentNode()
while True:
if accept_token(token_stream, Token.Par):
skip_token(token_stream)
elif accept_token(token_stream, Token.Br):
skip_token(token_stream)
elif accept_token(token_stream, Token.Literal):
root.append(LiteralNode(token_stream.value))
elif accept_token(token_stream, Token.Comment):
root.append(CommentNode(token_stream.value))
elif accept_token(token_stream, Token.Text):
p = gparagraph(token_stream)
root.append(p)
elif accept_token(token_stream, Token.Tag.SelfClosingTag):
p = gparagraph(token_stream)
root.append(p)
elif accept_token(token_stream, Token.Tag.InlineTag):
p = gparagraph(token_stream)
root.append(p)
elif accept_token(token_stream, Token.Tag.BlockTag):
block = gblock(token_stream)
root.append(block)
else:
return root
def gparagraph(token_stream):
p = ParagraphNode()
while True:
if accept_token(token_stream, Token.Par):
skip_token(token_stream)
return p
elif accept_token(token_stream, Token.Br):
p.append(gbr(token_stream))
elif accept_token(token_stream, Token.Literal):
p.append(LiteralNode(token_stream.value))
elif accept_token(token_stream, Token.Comment):
p.append(CommentNode(token_stream.value))
elif accept_token(token_stream, Token.Text):
p.append(TextNode(token_stream.value))
elif accept_token(token_stream, Token.Tag.SelfClosingTag):
p.append(SelfClosingTagNode(token_stream.value))
elif accept_token(token_stream, Token.Tag.InlineTag):
inline_tag = ginline_tag(token_stream)
p.append(inline_tag)
elif accept_token(token_stream, Token.Tag.BlockTag):
return p
else:
return p