def _test_myfrontend_bad (self, filename):
source = open(os.path.join(self.path, filename)).read()
try:
mybuiltins.myfrontend(source, mybuiltins.initial_environment())
self.failUnless(False, "The previous line should have thrown an "
"exception.")
except MyFrontExceptions.MyFrontCompileTimeError, ct_err:
embedded_exception = ct_err.args[0][1]
self.failUnless(type(embedded_exception) ==
MyFrontExceptions.MyFrontSyntaxError)
# XXX I don't know how brittle this is if we ever change
# the syntax error message:
msg = embedded_exception.args[0].split()
line_index = msg.index('line') + 1
line_no = int(msg[line_index][:-1])
column_index = msg.index('column') + 1
column_no = int(msg[column_index][:-1])
unexpected_index = msg.index('unexpected') + 1
unexpected_str = eval(msg[unexpected_index][:-1])
source_line = source.split("\n")[line_no - 1]
source_str = source_line[column_no:column_no +
len(unexpected_str)]
if __DEBUG__:
print line_no, column_no, `source_line`,
print `source_line[column_no - 1:]`, `unexpected_str`
self.failUnlessEqual(source_str, unexpected_str)
def nonquote_myboth (src, env = None):
if env is None:
env = mybuiltins.initial_environment()
ast, env = env["myfrontend"](src, env)
env = env.copy()
_, env = env["myeval"](ast, env)
return ast.body, env
def main (*args):
env = mybuiltins.initial_environment()
for arg in args:
text, env = mybuiltins._load_file(arg, env)
myast, env = env['myfrontend'](text, env)
pyast = myast_to_pyast(myast)
pyast.lineno = pyast.col_offset = 0
co = compile(pyast, 'xxx', 'exec')
exec co in env
def main (*args):
for arg in args:
print "_" * 70
source = open(arg).read()
ast, env0 = mybuiltins.myfrontend(source, mybuiltins.initial_environment())
co0, env1 = mybuiltins.mybackend(ast, env0)
dis.dis(co0)
print "_" * 60
co1 = compile(source, arg, "exec")
dis.dis(co1)
def test_makequote (self):
DUMMY_VALUE = 99
def myprocessor (source):
return DUMMY_VALUE
env = mybuiltins.initial_environment()
env["myquote"] = env["makequote"](myprocessor)
_, env = env["myfront"](None, "quote [myquote] myval: anything\n\n",
env)
self.assertEquals(env["myval"], DUMMY_VALUE)
del env["myval"]
_, env = env["myfront"](None, "quote [myquote]:\n\tno, really, "
"anything.\n\n", env)
self.failUnlessRaises(KeyError, env.__getitem__, "myval")
def test_makequote_with_mutation (self):
DUMMY_VALUE = "kookamungous"
def myotherprocessor (source, env):
if "sideeffectuals" in env:
env["sideeffectuals"]["otherval"] = DUMMY_VALUE
return DUMMY_VALUE, env
env = mybuiltins.initial_environment()
env["sideeffectuals"] = {}
env["myquote2"] = mybuiltins.makequote(myotherprocessor, True)
_, env = env["myfront"](None, "quote [myquote2] myval2: anything2\n\n",
env)
self.assertEquals(env["myval2"], env["sideeffectuals"]["otherval"])
self.assertEquals(env["myval2"], DUMMY_VALUE)
del env["myval2"]
env["sideeffectuals"] = {}
_, env = env["myfront"](None, "quote [myquote2]:\n\tI'm serious,\n\t"
"anything.\n\n", env)
self.assertEquals(env["sideeffectuals"]["otherval"], DUMMY_VALUE)
self.failUnlessRaises(KeyError, env.__getitem__, "myval2")
