def parse(self, reader: LineReader, document: Element) -> None:
"""Parses a text and build document."""
while not reader.eof():
for _, processor in self.processors:
if processor.match(reader):
if processor.run(reader, document):
break
else:
raise RuntimeError('Failed to parse')
def test_LineReader():
reader = LineReader(text.splitlines(), source='dummy.md')
assert reader.eof() is False
assert reader.get_source_and_line() == ('dummy.md', 0)
# read first line
assert reader.readline() == "Lorem ipsum dolor sit amet, "
assert reader.current_line == "Lorem ipsum dolor sit amet, "
assert reader.fetch() == "Lorem ipsum dolor sit amet, "
assert reader.fetch(1) == "consectetur adipiscing elit, "
assert reader.next_line == "consectetur adipiscing elit, "
assert reader.fetch(2) == ""
assert reader.get_source_and_line() == ('dummy.md', 1)
# read second line
assert reader.readline() == "consectetur adipiscing elit, "
assert reader.current_line == "consectetur adipiscing elit, "
assert reader.fetch() == "consectetur adipiscing elit, "
assert reader.fetch(1) == ""
assert reader.get_source_and_line() == ('dummy.md', 2)
# rollback a line
reader.step(-1)
assert reader.current_line == "Lorem ipsum dolor sit amet, "
assert reader.get_source_and_line() == ('dummy.md', 1)
# step a line again
reader.step()
assert reader.current_line == "consectetur adipiscing elit, "
# read until the end
assert reader.readline() == ""
assert reader.readline() == " sed do eiusmod tempor incididunt "
assert reader.readline() == " ut labore et dolore magna aliqua."
assert reader.readline() == ""
assert reader.readline() == "Ut enim ad minim veniam, quis nostrud"
assert reader.eof() is True
try:
assert reader.readline()
assert False, "reader does not raise IOError on EOF"
except IOError:
pass
def test_nested_line_readers():
text = ("> 1. > Blockquote\n" "continued here.\n")
reader = LineReader(text.splitlines(True))
reader = BlockQuoteReader(reader)
reader = ListItemReader(reader, r'1\.', BlockProcessor(None))
reader = BlockQuoteReader(reader)
reader = LazyLineReader(reader)
assert reader.readline() == 'Blockquote\n'
assert reader.eof() is False
assert reader.next_line == 'continued here.\n'
assert reader.readline() == 'continued here.\n'