diff options
| author | Reinier Heeres <reinier@heeres.eu> | 2008-01-03 08:52:09 (GMT) |
|---|---|---|
| committer | Reinier Heeres <reinier@heeres.eu> | 2008-01-03 08:52:09 (GMT) |
| commit | 5dda927d0d3cbf4c8265db32f5adcdb701cbab35 (patch) | |
| tree | ad5624eabd8c8163eeaa7e6152e6ea65250a9446 /eqnparser.py | |
| parent | f0a4be3d698ad001d18f5dfef3763bf1ef741482 (diff) | |
More parser fixes, #5734
Diffstat (limited to 'eqnparser.py')
| -rw-r--r-- | eqnparser.py | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/eqnparser.py b/eqnparser.py index 83b2af4..28167e7 100644 --- a/eqnparser.py +++ b/eqnparser.py @@ -30,6 +30,8 @@ from rational import Rational from gettext import gettext as _ +_generic_error = _('Parse error') + class Equation: def __init__(self, eqn): self.equation = eqn @@ -209,9 +211,9 @@ class EqnParser: self.register_function('operators', lambda x: self.operators_string(), {"nargs": 0}) self.register_operator('+', self.OP_DIADIC, 0, lambda x: self.ml.add(x[0], x[1])) - self.register_operator('+', self.OP_PRE, 1, lambda x: x[0]) + self.register_operator('+', self.OP_PRE, 2, lambda x: x[0]) self.register_operator('-', self.OP_DIADIC, 0, lambda x: self.ml.sub(x[0], x[1])) - self.register_operator('-', self.OP_PRE, 1, lambda x: self.ml.negate(x[0])) + self.register_operator('-', self.OP_PRE, 2, lambda x: self.ml.negate(x[0])) self.register_operator('*', self.OP_DIADIC, 1, lambda x: self.ml.mul(x[0], x[1])) self.register_operator(u'⨯', self.OP_DIADIC, 1, lambda x: self.ml.mul(x[0], x[1])) self.register_operator(u'×', self.OP_DIADIC, 1, lambda x: self.ml.mul(x[0], x[1])) @@ -224,8 +226,14 @@ class EqnParser: self.register_operator('!', self.OP_POST, 0, lambda x: self.ml.factorial(x[0])) self.register_operator('&', self.OP_DIADIC, 0, lambda x: x[0] and x[1]) + self.register_function('and', lambda x: x[0] and x[1], {"nargs": 2}) self.register_operator('|', self.OP_DIADIC, 0, lambda x: x[0] or x[1]) + self.register_function('or', lambda x: x[0] or x[1], {"nargs": 2}) self.register_operator('!', self.OP_PRE, 0, lambda x: not x[0]) + self.register_function('not', lambda x: not x[0], {"nargs": 1}) + +# self.register_operator('^', self.OP_PRE, 0, lambda x: not x[0]) + self.register_function('xor', lambda x: (x[0] and not x[1]) or (x[1] and not x[0]), {"nargs": 2}) self.register_operator('=', self.OP_DIADIC, 0, lambda x: x[0] == x[1]) self.register_operator('!=', self.OP_DIADIC, 0, lambda x: x[0] != x[1]) |