'''
from functools import wraps
from inspect import getdoc
-from re import Scanner
from traceback import print_exc
import operator
JOY_BOOL_LITERALS = _F, _T = 'false', 'true'
-BRACKETS = r'\[|\]' # Left or right square bracket.
-BLANKS = r'\s+' # One-or-more blankspace.
-WORDS = (
- '[' # Character class
- '^' # not a
- '[' # left square bracket nor a
- r'\]' # right square bracket (escaped so it doesn't close the character class)
- r'\s' # nor blankspace
- ']+' # end character class, one-or-more.
-)
-
-
-token_scanner = Scanner(
- [
- (BRACKETS, lambda _, token: token),
- (BLANKS, None),
- (WORDS, lambda _, token: token),
- ]
-)
-
-
class ParseError(ValueError):
'''
Raised when there is a error while parsing text.
:rtype: stack
:raises ParseError: if the parse fails.
'''
- return _parse(_tokenize(text))
-
-
-def _tokenize(text):
- '''Convert a text into a stream of tokens.
-
- Converts function names to Symbols.
-
- Raise ParseError (with some of the failing text) if the scan fails.
- '''
- tokens, rest = token_scanner.scan(text)
- if rest:
- raise ParseError(
- 'Scan failed at position %i, %r'
- % (len(text) - len(rest), rest[:10])
- )
- return tokens
+ return _parse(text.replace('[', ' [ ').replace(']', ' ] ').split())
def _parse(tokens):