dawn-cmake/generator/templates/dawn/native/api_structs.h

89 lines
3.9 KiB
C

//* Copyright 2017 The Dawn Authors
//*
//* Licensed under the Apache License, Version 2.0 (the "License");
//* you may not use this file except in compliance with the License.
//* You may obtain a copy of the License at
//*
//* http://www.apache.org/licenses/LICENSE-2.0
//*
//* Unless required by applicable law or agreed to in writing, software
//* distributed under the License is distributed on an "AS IS" BASIS,
//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//* See the License for the specific language governing permissions and
//* limitations under the License.
{% set namespace_name = Name(metadata.native_namespace) %}
{% set DIR = namespace_name.concatcase().upper() %}
{% set namespace = metadata.namespace %}
#ifndef {{DIR}}_{{namespace.upper()}}_STRUCTS_H_
#define {{DIR}}_{{namespace.upper()}}_STRUCTS_H_
{% set api = metadata.api.lower() %}
#include "dawn/{{api}}_cpp.h"
{% set impl_dir = metadata.impl_dir + "/" if metadata.impl_dir else "" %}
{% set native_namespace = namespace_name.namespace_case() %}
{% set native_dir = impl_dir + namespace_name.Dirs() %}
#include "{{native_dir}}/Forward.h"
#include <cmath>
namespace {{native_namespace}} {
{% macro render_cpp_default_value(member) -%}
{%- if member.annotation in ["*", "const*"] and member.optional or member.default_value == "nullptr" -%}
{{" "}}= nullptr
{%- elif member.type.category == "object" and member.optional -%}
{{" "}}= nullptr
{%- elif member.type.category in ["enum", "bitmask"] and member.default_value != None -%}
{{" "}}= {{namespace}}::{{as_cppType(member.type.name)}}::{{as_cppEnum(Name(member.default_value))}}
{%- elif member.type.category == "native" and member.default_value != None -%}
{{" "}}= {{member.default_value}}
{%- elif member.default_value != None -%}
{{" "}}= {{member.default_value}}
{%- else -%}
{{assert(member.default_value == None)}}
{%- endif -%}
{%- endmacro %}
using {{namespace}}::ChainedStruct;
using {{namespace}}::ChainedStructOut;
{% for type in by_category["structure"] %}
{% if type.chained %}
{% set chainedStructType = "ChainedStructOut" if type.chained == "out" else "ChainedStruct" %}
struct {{as_cppType(type.name)}} : {{chainedStructType}} {
{{as_cppType(type.name)}}() {
sType = {{namespace}}::SType::{{type.name.CamelCase()}};
}
{% else %}
struct {{as_cppType(type.name)}} {
{% endif %}
{% if type.extensible %}
{% set chainedStructType = "ChainedStructOut" if type.output else "ChainedStruct const" %}
{{chainedStructType}} * nextInChain = nullptr;
{% endif %}
{% for member in type.members %}
{% set member_declaration = as_annotated_frontendType(member) + render_cpp_default_value(member) %}
{% if type.chained and loop.first %}
//* Align the first member after ChainedStruct to match the C struct layout.
//* It has to be aligned both to its natural and ChainedStruct's alignment.
alignas({{namespace}}::{{as_cppType(type.name)}}::kFirstMemberAlignment) {{member_declaration}};
{% else %}
{{member_declaration}};
{% endif %}
{% endfor %}
// Equality operators, mostly for testing. Note that this tests
// strict pointer-pointer equality if the struct contains member pointers.
bool operator==(const {{as_cppType(type.name)}}& rhs) const;
};
{% endfor %}
{% for typeDef in by_category["typedef"] if typeDef.type.category == "structure" %}
using {{as_cppType(typeDef.name)}} = {{as_cppType(typeDef.type.name)}};
{% endfor %}
} // namespace {{native_namespace}}
#endif // {{DIR}}_{{namespace.upper()}}_STRUCTS_H_