mirror of
https://github.com/encounter/dawn-cmake.git
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2c8b5c6370
webgpu.h is the "official" header for WebGPU in native and is being developed in https://github.com/webgpu-native/webgpu-headers dawn.h and dawncpp.h are changed to become webgpu.h and webgpu_cpp.h respectively and use the new naming convention. New dawn.h and dawncpp.h headers are created that just proxy the types, constants and functions to their WebGPU counterpart. Almost no naming change is done in Dawn in this commit, which help check that the proxying headers work correctly. A couple changes were necessary, in particular for tests of the internal of dawncpp.h, and a workaround for a standard library bug for std::underlying_type was removed because it is no longer needed and got in the way. Finally since some templates were renamed to match the name of the file they create instead of using the generic "api" name. BUG=dawn:22 Change-Id: I12ee22d0b02ccb5b8a52ceccabb3e63ce74da007 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12480 Commit-Queue: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Kai Ninomiya <kainino@chromium.org>
602 lines
24 KiB
Python
602 lines
24 KiB
Python
#!/usr/bin/env python2
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# Copyright 2017 The Dawn Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json, os, sys
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from collections import namedtuple
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from generator_lib import Generator, run_generator, FileRender
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############################################################
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# OBJECT MODEL
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############################################################
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class Name:
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def __init__(self, name, native=False):
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self.native = native
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if native:
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self.chunks = [name]
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else:
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self.chunks = name.split(' ')
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def CamelChunk(self, chunk):
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return chunk[0].upper() + chunk[1:]
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def canonical_case(self):
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return (' '.join(self.chunks)).lower()
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def concatcase(self):
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return ''.join(self.chunks)
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def camelCase(self):
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return self.chunks[0] + ''.join([self.CamelChunk(chunk) for chunk in self.chunks[1:]])
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def CamelCase(self):
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return ''.join([self.CamelChunk(chunk) for chunk in self.chunks])
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def SNAKE_CASE(self):
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return '_'.join([chunk.upper() for chunk in self.chunks])
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def snake_case(self):
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return '_'.join(self.chunks)
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def concat_names(*names):
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return ' '.join([name.canonical_case() for name in names])
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class Type:
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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 = json_data['category']
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EnumValue = namedtuple('EnumValue', ['name', 'value', 'valid'])
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class EnumType(Type):
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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'], m.get('valid', True)) for m in self.json_data['values']]
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# Assert that all values are unique in enums
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all_values = set()
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for value in self.values:
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if value.value in all_values:
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raise Exception("Duplicate value {} in enum {}".format(value.value, name))
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all_values.add(value.value)
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BitmaskValue = namedtuple('BitmaskValue', ['name', 'value'])
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class BitmaskType(Type):
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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, 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, json_data):
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Type.__init__(self, name, json_data)
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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=False,
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is_return_value=False, default_value=None,
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skip_serialize=False):
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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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self.is_return_value = is_return_value
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self.handle_type = None
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self.default_value = default_value
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self.skip_serialize = skip_serialize
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def set_handle_type(self, handle_type):
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assert self.type.dict_name == "ObjectHandle"
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self.handle_type = handle_type
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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, 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 Record:
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def __init__(self, name):
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self.name = Name(name)
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self.members = []
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self.has_dawn_object = False
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def update_metadata(self):
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def has_dawn_object(member):
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if isinstance(member.type, ObjectType):
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return True
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elif isinstance(member.type, StructureType):
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return member.type.has_dawn_object
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else:
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return False
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self.has_dawn_object = any(has_dawn_object(member) for member in self.members)
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class StructureType(Record, Type):
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def __init__(self, name, json_data):
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Record.__init__(self, name)
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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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class Command(Record):
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def __init__(self, name, members=None):
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Record.__init__(self, name)
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self.members = members or []
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self.derived_object = None
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self.derived_method = None
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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'),
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optional=m.get('optional', False),
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is_return_value=m.get('is_return_value', False),
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default_value=m.get('default', None),
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skip_serialize=m.get('skip_serialize', False))
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handle_type = m.get('handle_type')
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if handle_type:
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member.set_handle_type(types[handle_type])
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members.append(member)
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members_by_name[member.name.canonical_case()] = member
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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 != 'object':
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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 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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return members
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############################################################
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# PARSE
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############################################################
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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(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.methods.sort(key=lambda method: method.name.canonical_case())
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obj.native_methods = [method for method in methods if is_native_method(method)]
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def link_structure(struct, types):
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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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# original order (though th sort isn't technically stable).
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# It works by computing for each struct type what is the depth of its DAG of dependents, then
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# resorting based on that depth using Python's stable sort. This makes a toposort because if
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# A depends on B then its depth will be bigger than B's. It is also nice because all nodes
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# with the same depth are kept in the input order.
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def topo_sort_structure(structs):
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for struct in structs:
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struct.visited = False
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struct.subdag_depth = 0
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def compute_depth(struct):
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if struct.visited:
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return struct.subdag_depth
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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':
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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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struct.visited = True
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return struct.subdag_depth
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for struct in structs:
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compute_depth(struct)
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result = sorted(structs, key=lambda struct: struct.subdag_depth)
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for struct in structs:
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del struct.visited
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del struct.subdag_depth
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return result
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def parse_json(json):
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category_to_parser = {
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'bitmask': BitmaskType,
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'enum': EnumType,
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'native': NativeType,
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'natively defined': NativelyDefined,
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'object': ObjectType,
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'structure': StructureType,
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}
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types = {}
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by_category = {}
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for name in category_to_parser.keys():
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by_category[name] = []
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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 = 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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for obj in by_category['object']:
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link_object(obj, types)
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for struct in by_category['structure']:
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link_structure(struct, types)
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for category in by_category.keys():
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by_category[category] = sorted(by_category[category], key=lambda typ: typ.name.canonical_case())
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by_category['structure'] = topo_sort_structure(by_category['structure'])
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for struct in by_category['structure']:
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struct.update_metadata()
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return {
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'types': types,
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'by_category': by_category
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}
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############################################################
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# WIRE STUFF
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############################################################
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# Create wire commands from api methods
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def compute_wire_params(api_params, wire_json):
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wire_params = api_params.copy()
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types = wire_params['types']
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commands = []
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return_commands = []
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# Generate commands from object methods
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for api_object in wire_params['by_category']['object']:
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for method in api_object.methods:
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command_name = concat_names(api_object.name, method.name)
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command_suffix = Name(command_name).CamelCase()
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# Only object return values or void are supported. Other methods must be handwritten.
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if method.return_type.category != 'object' and method.return_type.name.canonical_case() != 'void':
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assert(command_suffix in wire_json['special items']['client_handwritten_commands'])
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continue
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if command_suffix in wire_json['special items']['client_side_commands']:
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continue
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# Create object method commands by prepending "self"
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members = [RecordMember(Name('self'), types[api_object.dict_name], 'value')]
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members += method.arguments
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# Client->Server commands that return an object return the result object handle
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if method.return_type.category == 'object':
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result = RecordMember(Name('result'), types['ObjectHandle'], 'value', is_return_value=True)
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result.set_handle_type(method.return_type)
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members.append(result)
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command = Command(command_name, members)
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command.derived_object = api_object
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command.derived_method = method
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commands.append(command)
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for (name, json_data) in wire_json['commands'].items():
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commands.append(Command(name, linked_record_members(json_data, types)))
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for (name, json_data) in wire_json['return commands'].items():
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return_commands.append(Command(name, linked_record_members(json_data, types)))
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wire_params['cmd_records'] = {
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'command': commands,
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'return command': return_commands
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}
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for commands in wire_params['cmd_records'].values():
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for command in commands:
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command.update_metadata()
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commands.sort(key=lambda c: c.name.canonical_case())
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wire_params.update(wire_json.get('special items', {}))
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return wire_params
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#############################################################
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# Generator
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#############################################################
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def as_varName(*names):
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return names[0].camelCase() + ''.join([name.CamelCase() for name in names[1:]])
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def as_cType(name):
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if name.native:
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return name.concatcase()
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else:
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return 'WGPU' + name.CamelCase()
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def as_cTypeDawn(name):
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if name.native:
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return name.concatcase()
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else:
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return 'Dawn' + name.CamelCase()
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def as_cTypeEnumSpecialCase(typ):
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if typ.category == 'bitmask':
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return as_cType(typ.name) + 'Flags'
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return as_cType(typ.name)
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def as_cppType(name):
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if name.native:
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return name.concatcase()
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else:
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return name.CamelCase()
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def convert_cType_to_cppType(typ, annotation, arg, indent=0):
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if typ.category == 'native':
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return arg
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if annotation == 'value':
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if typ.category == 'object':
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return '{}::Acquire({})'.format(as_cppType(typ.name), arg)
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elif typ.category == 'structure':
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converted_members = [
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convert_cType_to_cppType(
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member.type, member.annotation,
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'{}.{}'.format(arg, as_varName(member.name)),
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indent + 1)
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for member in typ.members]
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converted_members = [(' ' * 4) + m for m in converted_members ]
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converted_members = ',\n'.join(converted_members)
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return as_cppType(typ.name) + ' {\n' + converted_members + '\n}'
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else:
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return 'static_cast<{}>({})'.format(as_cppType(typ.name), arg)
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else:
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return 'reinterpret_cast<{} {}>({})'.format(as_cppType(typ.name), annotation, arg)
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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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elif arg.annotation == 'const*const*':
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return 'const ' + typ + '* const * ' + name
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else:
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assert(False)
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def annotated(typ, arg):
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name = as_varName(arg.name)
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return decorate(name, typ, arg)
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def as_cEnum(type_name, value_name):
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assert(not type_name.native and not value_name.native)
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return 'WGPU' + type_name.CamelCase() + '_' + value_name.CamelCase()
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def as_cEnumDawn(type_name, value_name):
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assert(not type_name.native and not value_name.native)
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return 'DAWN' + '_' + type_name.SNAKE_CASE() + '_' + value_name.SNAKE_CASE()
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def as_cppEnum(value_name):
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assert(not value_name.native)
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if value_name.concatcase()[0].isdigit():
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return "e" + value_name.CamelCase()
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return value_name.CamelCase()
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def as_cMethod(type_name, method_name):
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assert(not type_name.native and not method_name.native)
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return 'wgpu' + type_name.CamelCase() + method_name.CamelCase()
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def as_cMethodDawn(type_name, method_name):
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assert(not type_name.native and not method_name.native)
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return 'dawn' + type_name.CamelCase() + method_name.CamelCase()
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def as_MethodSuffix(type_name, method_name):
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assert(not type_name.native and not method_name.native)
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return type_name.CamelCase() + method_name.CamelCase()
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def as_cProc(type_name, method_name):
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assert(not type_name.native and not method_name.native)
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return 'WGPU' + 'Proc' + type_name.CamelCase() + method_name.CamelCase()
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def as_cProcDawn(type_name, method_name):
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assert(not type_name.native and not method_name.native)
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return 'Dawn' + 'Proc' + type_name.CamelCase() + method_name.CamelCase()
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def as_frontendType(typ):
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if typ.category == 'object':
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return typ.name.CamelCase() + 'Base*'
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elif typ.category in ['bitmask', 'enum']:
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return 'dawn::' + typ.name.CamelCase()
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elif typ.category == 'structure':
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return as_cppType(typ.name)
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else:
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return as_cType(typ.name)
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def as_wireType(typ):
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if typ.category == 'object':
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return typ.name.CamelCase() + '*'
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elif typ.category in ['bitmask', 'enum']:
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return 'Dawn' + typ.name.CamelCase()
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else:
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return as_cppType(typ.name)
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def cpp_native_methods(types, typ):
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return sorted(typ.methods + typ.native_methods, key=lambda method: method.name.canonical_case())
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def c_native_methods(types, typ):
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return cpp_native_methods(types, typ) + [
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Method(Name('reference'), types['void'], []),
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Method(Name('release'), types['void'], []),
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]
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def get_methods_sorted_by_name(api_params):
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unsorted = [(as_MethodSuffix(typ.name, method.name), typ, method) \
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for typ in api_params['by_category']['object'] \
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for method in c_native_methods(api_params['types'], typ) ]
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return [(typ, method) for (_, typ, method) in sorted(unsorted)]
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class MultiGeneratorFromDawnJSON(Generator):
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def get_description(self):
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return 'Generates code for various target from Dawn.json.'
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def add_commandline_arguments(self, parser):
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allowed_targets = ['dawn_headers', 'dawncpp_headers', 'dawncpp', 'dawn_proc', 'mock_dawn', 'dawn_wire', "dawn_native_utils"]
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parser.add_argument('--dawn-json', required=True, type=str, help ='The DAWN JSON definition to use.')
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parser.add_argument('--wire-json', default=None, type=str, help='The DAWN WIRE JSON definition to use.')
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parser.add_argument('--targets', required=True, type=str, help='Comma-separated subset of targets to output. Available targets: ' + ', '.join(allowed_targets))
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def get_file_renders(self, args):
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with open(args.dawn_json) as f:
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loaded_json = json.loads(f.read())
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api_params = parse_json(loaded_json)
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targets = args.targets.split(',')
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wire_json = None
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if args.wire_json:
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with open(args.wire_json) as f:
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wire_json = json.loads(f.read())
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base_params = {
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'Name': lambda name: Name(name),
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'as_annotated_cType': lambda arg: annotated(as_cTypeEnumSpecialCase(arg.type), arg),
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'as_annotated_cppType': lambda arg: annotated(as_cppType(arg.type.name), arg),
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'as_cEnum': as_cEnum,
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'as_cEnumDawn': as_cEnumDawn,
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'as_cppEnum': as_cppEnum,
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'as_cMethod': as_cMethod,
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'as_cMethodDawn': as_cMethodDawn,
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'as_MethodSuffix': as_MethodSuffix,
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'as_cProc': as_cProc,
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'as_cProcDawn': as_cProcDawn,
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'as_cType': as_cType,
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'as_cTypeDawn': as_cTypeDawn,
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'as_cppType': as_cppType,
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'convert_cType_to_cppType': convert_cType_to_cppType,
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'as_varName': as_varName,
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'decorate': decorate,
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'methods_sorted_by_name': get_methods_sorted_by_name(api_params),
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}
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renders = []
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c_params = {'native_methods': lambda typ: c_native_methods(api_params['types'], typ)}
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cpp_params = {'native_methods': lambda typ: cpp_native_methods(api_params['types'], typ)}
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if 'dawn_headers' in targets:
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renders.append(FileRender('webgpu.h', 'src/include/dawn/webgpu.h', [base_params, api_params, c_params]))
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renders.append(FileRender('dawn.h', 'src/include/dawn/dawn.h', [base_params, api_params, c_params]))
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renders.append(FileRender('dawn_proc_table.h', 'src/include/dawn/dawn_proc_table.h', [base_params, api_params, c_params]))
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if 'dawncpp_headers' in targets:
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renders.append(FileRender('webgpu_cpp.h', 'src/include/dawn/webgpu_cpp.h', [base_params, api_params, cpp_params]))
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renders.append(FileRender('dawncpp.h', 'src/include/dawn/dawncpp.h', [base_params, api_params, cpp_params]))
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if 'dawn_proc' in targets:
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renders.append(FileRender('dawn_proc.c', 'src/dawn/dawn_proc.c', [base_params, api_params, c_params]))
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if 'dawncpp' in targets:
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renders.append(FileRender('webgpu_cpp.cpp', 'src/dawn/webgpu_cpp.cpp', [base_params, api_params, cpp_params]))
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if 'mock_dawn' in targets:
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renders.append(FileRender('mock_api.h', 'src/dawn/mock_dawn.h', [base_params, api_params, c_params]))
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renders.append(FileRender('mock_api.cpp', 'src/dawn/mock_dawn.cpp', [base_params, api_params, c_params]))
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if 'dawn_native_utils' in targets:
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frontend_params = [
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base_params,
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api_params,
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c_params,
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{
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'as_frontendType': lambda typ: as_frontendType(typ), # TODO as_frontendType and friends take a Type and not a Name :(
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'as_annotated_frontendType': lambda arg: annotated(as_frontendType(arg.type), arg)
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}
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]
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renders.append(FileRender('dawn_native/ValidationUtils.h', 'src/dawn_native/ValidationUtils_autogen.h', frontend_params))
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renders.append(FileRender('dawn_native/ValidationUtils.cpp', 'src/dawn_native/ValidationUtils_autogen.cpp', frontend_params))
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renders.append(FileRender('dawn_native/api_structs.h', 'src/dawn_native/dawn_structs_autogen.h', frontend_params))
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renders.append(FileRender('dawn_native/api_structs.cpp', 'src/dawn_native/dawn_structs_autogen.cpp', frontend_params))
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renders.append(FileRender('dawn_native/ProcTable.cpp', 'src/dawn_native/ProcTable.cpp', frontend_params))
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if 'dawn_wire' in targets:
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additional_params = compute_wire_params(api_params, wire_json)
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wire_params = [
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base_params,
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api_params,
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c_params,
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{
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'as_wireType': as_wireType,
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'as_annotated_wireType': lambda arg: annotated(as_wireType(arg.type), arg),
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},
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additional_params
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]
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renders.append(FileRender('dawn_wire/WireCmd.h', 'src/dawn_wire/WireCmd_autogen.h', wire_params))
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renders.append(FileRender('dawn_wire/WireCmd.cpp', 'src/dawn_wire/WireCmd_autogen.cpp', wire_params))
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renders.append(FileRender('dawn_wire/client/ApiObjects.h', 'src/dawn_wire/client/ApiObjects_autogen.h', wire_params))
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renders.append(FileRender('dawn_wire/client/ApiProcs.cpp', 'src/dawn_wire/client/ApiProcs_autogen.cpp', wire_params))
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renders.append(FileRender('dawn_wire/client/ApiProcs.h', 'src/dawn_wire/client/ApiProcs_autogen.h', wire_params))
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renders.append(FileRender('dawn_wire/client/ClientBase.h', 'src/dawn_wire/client/ClientBase_autogen.h', wire_params))
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renders.append(FileRender('dawn_wire/client/ClientHandlers.cpp', 'src/dawn_wire/client/ClientHandlers_autogen.cpp', wire_params))
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renders.append(FileRender('dawn_wire/client/ClientPrototypes.inc', 'src/dawn_wire/client/ClientPrototypes_autogen.inc', wire_params))
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renders.append(FileRender('dawn_wire/server/ServerBase.h', 'src/dawn_wire/server/ServerBase_autogen.h', wire_params))
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renders.append(FileRender('dawn_wire/server/ServerDoers.cpp', 'src/dawn_wire/server/ServerDoers_autogen.cpp', wire_params))
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renders.append(FileRender('dawn_wire/server/ServerHandlers.cpp', 'src/dawn_wire/server/ServerHandlers_autogen.cpp', wire_params))
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renders.append(FileRender('dawn_wire/server/ServerPrototypes.inc', 'src/dawn_wire/server/ServerPrototypes_autogen.inc', wire_params))
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return renders
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def get_dependencies(self, args):
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deps = [os.path.abspath(args.dawn_json)]
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if args.wire_json != None:
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deps += [os.path.abspath(args.wire_json)]
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return deps
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if __name__ == '__main__':
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sys.exit(run_generator(MultiGeneratorFromDawnJSON()))
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