generator: Unify handling of argument and member parsing
This completes the handling of "length" for structure members which were missing const* structures defaulting to being of length one. Also renames "record" to json_data to more precisely describe what it is. BUG=dawn:4 Change-Id: Ia53e4fcec15ebc9f9dae58ddba5b460d1f2eeebd Reviewed-on: https://dawn-review.googlesource.com/c/2881 Reviewed-by: Kai Ninomiya <kainino@chromium.org> Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>
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Corentin Wallez
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7b3ea34b6b
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@ -48,37 +48,39 @@ class Name:
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return '_'.join(self.chunks)
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class Type:
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def __init__(self, name, record, native=False):
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self.record = record
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def __init__(self, name, json_data, native=False):
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self.json_data = json_data
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self.dict_name = name
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self.name = Name(name, native=native)
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self.category = record['category']
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self.category = json_data['category']
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self.is_builder = self.name.canonical_case().endswith(" builder")
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EnumValue = namedtuple('EnumValue', ['name', 'value'])
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class EnumType(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record)
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self.values = [EnumValue(Name(m['name']), m['value']) for m in self.record['values']]
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data)
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self.values = [EnumValue(Name(m['name']), m['value']) for m in self.json_data['values']]
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BitmaskValue = namedtuple('BitmaskValue', ['name', 'value'])
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class BitmaskType(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record)
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self.values = [BitmaskValue(Name(m['name']), m['value']) for m in self.record['values']]
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data)
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self.values = [BitmaskValue(Name(m['name']), m['value']) for m in self.json_data['values']]
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self.full_mask = 0
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for value in self.values:
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self.full_mask = self.full_mask | value.value
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class NativeType(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record, native=True)
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data, native=True)
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class NativelyDefined(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record)
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data)
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class MethodArgument:
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# Methods and structures are both "records", so record members correspond to
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# method arguments or structure members.
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class RecordMember:
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def __init__(self, name, typ, annotation, optional):
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self.name = name
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self.type = typ
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@ -88,24 +90,16 @@ class MethodArgument:
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Method = namedtuple('Method', ['name', 'return_type', 'arguments'])
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class ObjectType(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record)
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data)
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self.methods = []
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self.native_methods = []
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self.built_type = None
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class StructureMember:
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def __init__(self, name, typ, annotation, optional):
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self.name = name
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self.type = typ
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self.annotation = annotation
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self.length = None
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self.optional = optional
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class StructureType(Type):
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def __init__(self, name, record):
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Type.__init__(self, name, record)
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self.extensible = record.get("extensible", False)
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def __init__(self, name, json_data):
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Type.__init__(self, name, json_data)
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self.extensible = json_data.get("extensible", False)
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self.members = []
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############################################################
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@ -117,32 +111,37 @@ def is_native_method(method):
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return method.return_type.category == "natively defined" or \
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any([arg.type.category == "natively defined" for arg in method.arguments])
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def link_object(obj, types):
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def make_method(record):
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arguments = []
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arguments_by_name = {}
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for a in record.get('args', []):
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arg = MethodArgument(Name(a['name']), types[a['type']],
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a.get('annotation', 'value'), a.get('optional', False))
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arguments.append(arg)
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arguments_by_name[arg.name.canonical_case()] = arg
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def linked_record_members(json_data, types):
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members = []
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members_by_name = {}
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for m in json_data:
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member = RecordMember(Name(m['name']), types[m['type']],
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m.get('annotation', 'value'), m.get('optional', False))
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members.append(member)
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members_by_name[member.name.canonical_case()] = member
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for (arg, a) in zip(arguments, record.get('args', [])):
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if arg.annotation != 'value':
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if not 'length' in a:
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if arg.type.category == 'structure':
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arg.length = "constant"
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arg.constant_length = 1
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for (member, m) in zip(members, json_data):
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if member.annotation != 'value':
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if not 'length' in m:
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if member.type.category == 'structure':
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member.length = "constant"
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member.constant_length = 1
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else:
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assert(False)
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elif a['length'] == 'strlen':
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arg.length = 'strlen'
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elif m['length'] == 'strlen':
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member.length = 'strlen'
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else:
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arg.length = arguments_by_name[a['length']]
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member.length = members_by_name[m['length']]
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return Method(Name(record['name']), types[record.get('returns', 'void')], arguments)
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return members
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methods = [make_method(m) for m in obj.record.get('methods', [])]
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def link_object(obj, types):
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def make_method(json_data):
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arguments = linked_record_members(json_data.get('args', []), types)
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return Method(Name(json_data['name']), types[json_data.get('returns', 'void')], arguments)
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methods = [make_method(m) for m in obj.json_data.get('methods', [])]
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obj.methods = [method for method in methods if not is_native_method(method)]
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obj.native_methods = [method for method in methods if is_native_method(method)]
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@ -155,25 +154,7 @@ def link_object(obj, types):
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assert(obj.built_type != None)
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def link_structure(struct, types):
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def make_member(m):
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return StructureMember(Name(m['name']), types[m['type']],
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m.get('annotation', 'value'), m.get('optional', False))
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members = []
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members_by_name = {}
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for m in struct.record['members']:
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member = make_member(m)
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members.append(member)
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members_by_name[member.name.canonical_case()] = member
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struct.members = members
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for (member, m) in zip(members, struct.record['members']):
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# TODO(kainino@chromium.org): More robust pointer/length handling?
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if 'length' in m:
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if m['length'] == 'strlen':
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member.length = 'strlen'
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else:
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member.length = members_by_name[m['length']]
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struct.members = linked_record_members(struct.json_data['members'], types)
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# Sort structures so that if struct A has struct B as a member, then B is listed before A
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# This is a form of topological sort where we try to keep the order reasonably similar to the
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@ -193,7 +174,7 @@ def topo_sort_structure(structs):
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max_dependent_depth = 0
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for member in struct.members:
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if member.type.category == 'structure' and member.annotation == 'value':
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if member.type.category == 'structure':
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max_dependent_depth = max(max_dependent_depth, compute_depth(member.type) + 1)
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struct.subdag_depth = max_dependent_depth
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@ -227,11 +208,11 @@ def parse_json(json):
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for name in category_to_parser.keys():
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by_category[name] = []
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for (name, record) in json.items():
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for (name, json_data) in json.items():
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if name[0] == '_':
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continue
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category = record['category']
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parsed = category_to_parser[category](name, record)
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category = json_data['category']
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parsed = category_to_parser[category](name, json_data)
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by_category[category].append(parsed)
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types[name] = parsed
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@ -363,8 +344,6 @@ def as_cppType(name):
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def decorate(name, typ, arg):
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if arg.annotation == 'value':
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return typ + ' ' + name
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elif arg.annotation == '*':
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return typ + '* ' + name
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elif arg.annotation == 'const*':
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return typ + ' const * ' + name
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else:
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@ -414,9 +393,9 @@ def cpp_native_methods(types, typ):
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if typ.is_builder:
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methods.append(Method(Name('set error callback'), types['void'], [
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MethodArgument(Name('callback'), types['builder error callback'], 'value', False),
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MethodArgument(Name('userdata1'), types['callback userdata'], 'value', False),
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MethodArgument(Name('userdata2'), types['callback userdata'], 'value', False),
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RecordMember(Name('callback'), types['builder error callback'], 'value', False),
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RecordMember(Name('userdata1'), types['callback userdata'], 'value', False),
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RecordMember(Name('userdata2'), types['callback userdata'], 'value', False),
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]))
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return methods
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