def test_11_namespaceRules(self):
"""
Test the namespace handling
"""
parser = parsing.Parser()
@meta.add_method(parsing.Parser)
def dummy(self):
res = parsing.Node()
res.text = "cool"
self.rule_nodes["_"] = res
return True
meta.set_one(parsing.Parser._rules, "A.B.C.test",
parsing.Call(parsing.Parser.dummy))
bRes = parser.eval_rule('test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('B.C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('A.B.C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
def test_11_namespaceRules(self):
"""
Test the namespace handling
"""
parser = parsing.Parser()
@meta.add_method(parsing.Parser)
def dummy(self):
res = parsing.Node()
res.text = "cool"
self.rule_nodes["_"] = res
return True
meta.set_one(parsing.Parser._rules, "A.B.C.test",
parsing.Call(parsing.Parser.dummy))
bRes = parser.eval_rule('test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('B.C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
bRes = parser.eval_rule('A.B.C.test')
self.assertEqual(bRes.text, "cool",
"failed rule node in global namespace")
def set_directives(cls, directives: dict) -> bool:
"""
Merge internal directives set with the given directives.
For working directives, attach it only in the dsl.Parser class
"""
meta._directives = meta._directives.new_child()
for dir_name, dir_pt in directives.items():
meta.set_one(meta._directives, dir_name, dir_pt)
dir_pt.ns_name = dir_name
return True
def set_directives(cls, directives: dict) -> bool:
"""
Merge internal directives set with the given directives.
For working directives, attach it only in the dsl.Parser class
"""
meta._directives = meta._directives.new_child()
for dir_name, dir_pt in directives.items():
meta.set_one(meta._directives, dir_name, dir_pt)
dir_pt.ns_name = dir_name
return True
def set_hooks(cls, hooks: dict) -> bool:
"""
Merge internal hooks set with the given hooks
"""
cls._hooks = cls._hooks.new_child()
for hook_name, hook_pt in hooks.items():
if '.' not in hook_name:
hook_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + hook_name
meta.set_one(cls._hooks, hook_name, hook_pt)
return True
def set_rules(cls, rules: dict) -> bool:
"""
Merge internal rules set with the given rules
"""
cls._rules = cls._rules.new_child()
for rule_name, rule_pt in rules.items():
if '.' not in rule_name:
rule_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + rule_name
meta.set_one(cls._rules, rule_name, rule_pt)
return True
def set_hooks(cls, hooks: dict) -> bool:
"""
Merge internal hooks set with the given hooks
"""
cls._hooks = cls._hooks.new_child()
for hook_name, hook_pt in hooks.items():
if '.' not in hook_name:
hook_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + hook_name
meta.set_one(cls._hooks, hook_name, hook_pt)
return True
def set_rules(cls, rules: dict) -> bool:
"""
Merge internal rules set with the given rules
"""
cls._rules = cls._rules.new_child()
for rule_name, rule_pt in rules.items():
if '.' not in rule_name:
rule_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + rule_name
meta.set_one(cls._rules, rule_name, rule_pt)
return True
def __new__(metacls, name, bases, namespace):
# for multi heritance we have a simple inheritance relation
# from the first class in declaration order.
metabp = parsing.MetaBasicParser
if len(bases) <= 1:
cls = metabp.__new__(metacls, name, bases, namespace)
else:
b = tuple([bases[0]])
cls = metabp.__new__(metacls, name, b, namespace)
# lookup for the metaclass of parsing.
# Grammar magically inherit rules&hooks from Parser
if 'Parser' in parsing.base._MetaBasicParser:
clsbase = parsing.base._MetaBasicParser['Parser']
# link rules&hooks
cls._rules = clsbase._rules.new_child()
cls._hooks = clsbase._hooks.new_child()
# add rules from DSL
if 'grammar' in namespace and namespace['grammar'] is not None:
sname = None
if 'source' in namespace and namespace['source'] is not None:
sname = namespace['source']
rules = cls.dsl_parser(namespace['grammar'], sname).get_rules()
if not rules:
return rules
# namespace rules with module/classe name
for rule_name, rule_pt in rules.items():
if '.' not in rule_name:
rule_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + rule_name
meta.set_one(cls._rules, rule_name, rule_pt)
# add localy define rules (and thus overloads)
if '_rules' in namespace and namespace['_rules'] is not None:
cls._rules.update(namespace['_rules'])
# add localy define hooks
if '_hooks' in namespace and namespace['_hooks'] is not None:
cls._hooks.update(namespace['_hooks'])
# Manage Aggregation
if len(bases) > 1:
aggreg_rules = ChainMap()
aggreg_hooks = ChainMap()
for subgrammar in bases:
if hasattr(subgrammar, '_rules'):
aggreg_rules = ChainMap(*(aggreg_rules.maps +
subgrammar._rules.maps))
if hasattr(subgrammar, '_hooks'):
aggreg_hooks = ChainMap(*(aggreg_hooks.maps +
subgrammar._hooks.maps))
# aggregate at toplevel the branch grammar
cls._rules = ChainMap(*(cls._rules.maps + aggreg_rules.maps))
cls._hooks = ChainMap(*(cls._hooks.maps + aggreg_hooks.maps))
# clean redondant in chain for rules
orderedunique_rules = []
tocpy_rules = set([id(_) for _ in cls._rules.maps])
for ch in cls._rules.maps:
idch = id(ch)
if idch in tocpy_rules:
orderedunique_rules.append(ch)
tocpy_rules.remove(idch)
cls._rules = ChainMap(*orderedunique_rules)
# clean redondant in chain for hooks
orderedunique_hooks = []
tocpy_hooks = set([id(_) for _ in cls._hooks.maps])
for ch in cls._hooks.maps:
idch = id(ch)
if idch in tocpy_hooks:
orderedunique_hooks.append(ch)
tocpy_hooks.remove(idch)
cls._hooks = ChainMap(*orderedunique_hooks)
return cls
def __new__(metacls, name, bases, namespace):
# for multi heritance we have a simple inheritance relation
# from the first class in declaration order.
metabp = parsing.MetaBasicParser
if len(bases) <= 1:
cls = metabp.__new__(metacls, name, bases, namespace)
else:
b = tuple([bases[0]])
cls = metabp.__new__(metacls, name, b, namespace)
# lookup for the metaclass of parsing.
# Grammar magically inherit rules&hooks from Parser
if 'Parser' in parsing.base._MetaBasicParser:
clsbase = parsing.base._MetaBasicParser['Parser']
# link rules&hooks
cls._rules = clsbase._rules.new_child()
cls._hooks = clsbase._hooks.new_child()
# add rules from DSL
if 'grammar' in namespace and namespace['grammar'] is not None:
sname = None
if 'source' in namespace and namespace['source'] is not None:
sname = namespace['source']
rules = cls.dsl_parser(namespace['grammar'], sname).get_rules()
if not rules:
return rules
# namespace rules with module/classe name
for rule_name, rule_pt in rules.items():
if '.' not in rule_name:
rule_name = cls.__module__ \
+ '.' + cls.__name__ \
+ '.' + rule_name
meta.set_one(cls._rules, rule_name, rule_pt)
# add localy define rules (and thus overloads)
if '_rules' in namespace and namespace['_rules'] is not None:
cls._rules.update(namespace['_rules'])
# add localy define hooks
if '_hooks' in namespace and namespace['_hooks'] is not None:
cls._hooks.update(namespace['_hooks'])
# Manage Aggregation
if len(bases) > 1:
aggreg_rules = ChainMap()
aggreg_hooks = ChainMap()
for subgrammar in bases:
if hasattr(subgrammar, '_rules'):
aggreg_rules = ChainMap(*(aggreg_rules.maps
+ subgrammar._rules.maps))
if hasattr(subgrammar, '_hooks'):
aggreg_hooks = ChainMap(*(aggreg_hooks.maps
+ subgrammar._hooks.maps))
# aggregate at toplevel the branch grammar
cls._rules = ChainMap(*(cls._rules.maps + aggreg_rules.maps))
cls._hooks = ChainMap(*(cls._hooks.maps + aggreg_hooks.maps))
# clean redondant in chain for rules
orderedunique_rules = []
tocpy_rules = set([id(_) for _ in cls._rules.maps])
for ch in cls._rules.maps:
idch = id(ch)
if idch in tocpy_rules:
orderedunique_rules.append(ch)
tocpy_rules.remove(idch)
cls._rules = ChainMap(*orderedunique_rules)
# clean redondant in chain for hooks
orderedunique_hooks = []
tocpy_hooks = set([id(_) for _ in cls._hooks.maps])
for ch in cls._hooks.maps:
idch = id(ch)
if idch in tocpy_hooks:
orderedunique_hooks.append(ch)
tocpy_hooks.remove(idch)
cls._hooks = ChainMap(*orderedunique_hooks)
return cls
