def parse(tokens):
from ast.multiplyexpression import MultiplyExpression
pos = tokens.getPosition()
operation = None
expr = MultiplyExpression.parse(tokens)
if expr is None:
return None
while True:
peek = tokens.peek()
if peek in lexer.AddOperators:
tokens.getNext()
rhs = MultiplyExpression.parse(tokens)
if rhs is None:
raise SyntaxError, 'Expected expression, got %r' % tokens.peek()
expr = AddExpression(expr, rhs, peek)
else:
return expr
def testMod(self):
tokens = lex("5 % 4")
result = MultiplyExpression.parse(tokens)
self.failUnless(isinstance(result, MultiplyExpression), repr(result))
