def check(files):
try:
trees = build_envs(files)
#All statements must be reachable. Details of the exact definition of
#reachability are specified in Section 14.20 of the Java Language
#Specification.
for tree in trees:
for block in (tree.findall(".//method/block") +
tree.findall(".//constructor_body")):
check_reachability(block)
for method in tree.findall(".//method"):
if method.find(".//tok_void") is None:
returns = always_returns(method.find("block"))
error_if(not returns,
"Doesn't always return from nonvoid method")
#Every local variable must have an initializer, and the variable must
#not occur in its own initializer.
for tree in trees:
for lvar in tree.findall(".//local_variable_declaration"):
name = lvar.find(".//variable/tok_identifier").text
error_if(lvar.find(".//expression") is None,
"Every local variable must have an initializer")
for ident in lvar.findall(".//expression//name"):
error_if(name == name_to_str(ident),
"Self cannot appear in local variable initializer.")
return 0
except JoosSyntaxException, e:
if not Testing.testing:
print e.msg
return 42
def check_files(files):
trees = build_envs(files)
for tree in [x for x in trees if not hasattr(x, "typechecked")]:
CurrentFile.name = tree.filename
populate_environment(tree)
for tree in [x for x in trees if not hasattr(x, "typechecked")]:
CurrentFile.name = tree.filename
typecheck(tree)
typecheck_other_conditions(tree)
check_field_initializers(tree)
tree.typechecked = True
return trees
