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dawn-cmake/generator/templates/api.h

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//* This template itself is part of the Dawn source and follows Dawn's license,
//* which is Apache 2.0.
//*
//* The WebGPU native API is a joint project used by Google, Mozilla, and Apple.
//* It was agreed to use a BSD 3-Clause license so that it is GPLv2-compatible.
//*
//* As a result, the template comments using //* at the top of the file are
//* removed during generation such that the resulting file starts with the
//* BSD 3-Clause comment, which is inside BSD_LICENSE as included below.
//*
//* Copyright 2020 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.
//*
//*
{% include 'BSD_LICENSE' %}
{% if 'dawn' in enabled_tags %}
#ifdef __EMSCRIPTEN__
#error "Do not include this header. Emscripten already provides headers needed for {{metadata.api}}."
#endif
{% endif %}
#ifndef {{metadata.api.upper()}}_H_
#define {{metadata.api.upper()}}_H_
{% set API = metadata.c_prefix %}
#if defined({{API}}_SHARED_LIBRARY)
# if defined(_WIN32)
# if defined({{API}}_IMPLEMENTATION)
# define {{API}}_EXPORT __declspec(dllexport)
# else
# define {{API}}_EXPORT __declspec(dllimport)
# endif
# else // defined(_WIN32)
# if defined({{API}}_IMPLEMENTATION)
# define {{API}}_EXPORT __attribute__((visibility("default")))
# else
# define {{API}}_EXPORT
# endif
# endif // defined(_WIN32)
#else // defined({{API}}_SHARED_LIBRARY)
# define {{API}}_EXPORT
#endif // defined({{API}}_SHARED_LIBRARY)
#if !defined({{API}}_OBJECT_ATTRIBUTE)
#define {{API}}_OBJECT_ATTRIBUTE
#endif
#if !defined({{API}}_ENUM_ATTRIBUTE)
#define {{API}}_ENUM_ATTRIBUTE
#endif
#if !defined({{API}}_STRUCTURE_ATTRIBUTE)
#define {{API}}_STRUCTURE_ATTRIBUTE
#endif
#if !defined({{API}}_FUNCTION_ATTRIBUTE)
#define {{API}}_FUNCTION_ATTRIBUTE
#endif
#if !defined({{API}}_NULLABLE)
#define {{API}}_NULLABLE
#endif
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
{% for constant in by_category["constant"] %}
#define {{API}}_{{constant.name.SNAKE_CASE()}} {{constant.value}}
{% endfor %}
typedef uint32_t {{API}}Flags;
{% for type in by_category["object"] %}
typedef struct {{as_cType(type.name)}}Impl* {{as_cType(type.name)}} {{API}}_OBJECT_ATTRIBUTE;
{% endfor %}
// Structure forward declarations
{% for type in by_category["structure"] %}
struct {{as_cType(type.name)}};
{% endfor %}
{% for type in by_category["enum"] + by_category["bitmask"] %}
typedef enum {{as_cType(type.name)}} {
{% for value in type.values %}
{{as_cEnum(type.name, value.name)}} = 0x{{format(value.value, "08X")}},
{% endfor %}
{{as_cEnum(type.name, Name("force32"))}} = 0x7FFFFFFF
} {{as_cType(type.name)}} {{API}}_ENUM_ATTRIBUTE;
{% if type.category == "bitmask" %}
typedef {{API}}Flags {{as_cType(type.name)}}Flags {{API}}_ENUM_ATTRIBUTE;
{% endif %}
{% endfor -%}
{% for type in by_category["function pointer"] %}
typedef {{as_cType(type.return_type.name)}} (*{{as_cType(type.name)}})(
{%- if type.arguments == [] -%}
void
{%- else -%}
{%- for arg in type.arguments -%}
{% if not loop.first %}, {% endif %}
{% if arg.type.category == "structure" %}struct {% endif %}{{as_annotated_cType(arg)}}
{%- endfor -%}
{%- endif -%}
) {{API}}_FUNCTION_ATTRIBUTE;
{% endfor %}
typedef struct {{API}}ChainedStruct {
struct {{API}}ChainedStruct const * next;
{{API}}SType sType;
} {{API}}ChainedStruct {{API}}_STRUCTURE_ATTRIBUTE;
typedef struct {{API}}ChainedStructOut {
struct {{API}}ChainedStructOut * next;
{{API}}SType sType;
} {{API}}ChainedStructOut {{API}}_STRUCTURE_ATTRIBUTE;
{% for type in by_category["structure"] %}
{% for root in type.chain_roots %}
// Can be chained in {{as_cType(root.name)}}
{% endfor %}
typedef struct {{as_cType(type.name)}} {
{% set Out = "Out" if type.output else "" %}
{% set const = "const " if not type.output else "" %}
{% if type.extensible %}
{{API}}ChainedStruct{{Out}} {{const}}* nextInChain;
{% endif %}
{% if type.chained %}
{{API}}ChainedStruct{{Out}} chain;
{% endif %}
{% for member in type.members %}
{% if member.optional %}
{{API}}_NULLABLE {{as_annotated_cType(member)}};
{% else %}
{{as_annotated_cType(member)}};
{% endif-%}
{% endfor %}
} {{as_cType(type.name)}} {{API}}_STRUCTURE_ATTRIBUTE;
{% endfor %}
{% for typeDef in by_category["typedef"] %}
// {{as_cType(typeDef.name)}} is deprecated.
// Use {{as_cType(typeDef.type.name)}} instead.
typedef {{as_cType(typeDef.type.name)}} {{as_cType(typeDef.name)}};
{% endfor %}
#ifdef __cplusplus
extern "C" {
#endif
#if !defined({{API}}_SKIP_PROCS)
{% for function in by_category["function"] %}
typedef {{as_cType(function.return_type.name)}} (*{{as_cProc(None, function.name)}})(
{%- for arg in function.arguments -%}
{% if not loop.first %}, {% endif %}{{as_annotated_cType(arg)}}
{%- endfor -%}
) {{API}}_FUNCTION_ATTRIBUTE;
{% endfor %}
{% for type in by_category["object"] if len(c_methods(type)) > 0 %}
// Procs of {{type.name.CamelCase()}}
{% for method in c_methods(type) %}
typedef {{as_cType(method.return_type.name)}} (*{{as_cProc(type.name, method.name)}})(
{{-as_cType(type.name)}} {{as_varName(type.name)}}
{%- for arg in method.arguments -%}
,{{" "}}
{%- if arg.optional %}{{API}}_NULLABLE {% endif -%}
{{as_annotated_cType(arg)}}
{%- endfor -%}
) {{API}}_FUNCTION_ATTRIBUTE;
{% endfor %}
{% endfor %}
#endif // !defined({{API}}_SKIP_PROCS)
#if !defined({{API}}_SKIP_DECLARATIONS)
{% for function in by_category["function"] %}
{{API}}_EXPORT {{as_cType(function.return_type.name)}} {{as_cMethod(None, function.name)}}(
{%- for arg in function.arguments -%}
{% if not loop.first %}, {% endif %}{{as_annotated_cType(arg)}}
{%- endfor -%}
) {{API}}_FUNCTION_ATTRIBUTE;
{% endfor %}
{% for type in by_category["object"] if len(c_methods(type)) > 0 %}
// Methods of {{type.name.CamelCase()}}
{% for method in c_methods(type) %}
{{API}}_EXPORT {{as_cType(method.return_type.name)}} {{as_cMethod(type.name, method.name)}}(
{{-as_cType(type.name)}} {{as_varName(type.name)}}
{%- for arg in method.arguments -%}
,{{" "}}
{%- if arg.optional %}{{API}}_NULLABLE {% endif -%}
{{as_annotated_cType(arg)}}
{%- endfor -%}
) {{API}}_FUNCTION_ATTRIBUTE;
{% endfor %}
{% endfor %}
#endif // !defined({{API}}_SKIP_DECLARATIONS)
#ifdef __cplusplus
} // extern "C"
#endif
#endif // {{metadata.api.upper()}}_H_
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