def test_infix(self):
actions = []
def infix_action(parser, tokens):
actions.append(tokens)
return tokens
var = Word()
def var_action(parser, tokens):
actions.extend(tokens)
return tokens[0]
var.set_action(var_action)
hede = Infix(var, Literal("+"))
hede.set_action(infix_action)
hede.parse_string({}, 'a + b')
self.assertEquals(actions, ['a', 'b', ['a', '+', 'b']])
functionmethodcall = (trailerwithcall | trailerwithoutcall | funccall)
# TODO should be fixed using postfix or sth
trailer = atom + Postfix(Optional(accessor) + Optional(
functionmethodcall | getitem
))
def trailerwithcall_process(children, parser):
index = parser.add_atom("str", children[0][1][0])
parser.add_instruction("pushconst %s" % index)
parser.add_instruction("getmethod")
return [child.process(child, parser) for child in children[0]]
trailerwithcall.process = trailerwithcall_process
trailerwithoutcall.set_action(accessor_action)
divexpr = Infix(trailer, Literal('/'))
divexpr.process = infix_process("div")
mulexpr = Infix(divexpr, Literal('*'))
mulexpr.process = infix_process("mul")
modexpr = Infix(mulexpr, Literal('%'))
modexpr.process = infix_process("mod")
subexpr = Infix(modexpr, Literal('-'))
subexpr.process = infix_process("sub")
addexpr = Infix(subexpr, Literal('+'))
addexpr.process = infix_process("add")
equalsexpr = Infix(addexpr, Literal("=="))
equalsexpr.process = infix_process("equals")
inexpr = Infix(equalsexpr, Literal("in"))
inexpr.process = infix_process("contains", reverse=True)
orexpr = Infix(inexpr, Literal('or'))
orexpr.process = infix_process("or")
