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import re
from .tokeniser import TokenType
def try_parse_class_name(tokens):
if tokens.try_skip(TokenType.SYMBOL, "."):
return parse_identifier(tokens)
else:
return None
def parse_identifier(tokens):
return decode_escape_sequences(tokens.next_value(TokenType.IDENTIFIER))
def parse_string(tokens):
return decode_escape_sequences(tokens.next_value(TokenType.STRING)[1:-1])
_ESCAPE_SEQUENCE_REGEX = re.compile(r"\\(.)")
def decode_escape_sequences(value):
return _ESCAPE_SEQUENCE_REGEX.sub(_decode_escape_sequence, value)
def _decode_escape_sequence(match):
code = match.group(1)
if code == "n":
return "\n"
elif code == "r":
return "\r"
elif code == "t":
return "\t"
else:
return code
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