86 lines
3.5 KiB
C++
86 lines
3.5 KiB
C++
// Copyright 2021 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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{% set namespace_name = Name(metadata.native_namespace) %}
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{% set DIR = namespace_name.concatcase().upper() %}
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#ifndef {{DIR}}_CHAIN_UTILS_H_
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#define {{DIR}}_CHAIN_UTILS_H_
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{% set impl_dir = metadata.impl_dir + "/" if metadata.impl_dir else "" %}
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{% set native_namespace = namespace_name.snake_case() %}
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{% set native_dir = impl_dir + native_namespace %}
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{% set prefix = metadata.proc_table_prefix.lower() %}
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#include "{{native_dir}}/{{prefix}}_platform.h"
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#include "{{native_dir}}/Error.h"
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namespace {{native_namespace}} {
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{% for value in types["s type"].values %}
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{% if value.valid %}
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void FindInChain(const ChainedStruct* chain, const {{as_cppEnum(value.name)}}** out);
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{% endif %}
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{% endfor %}
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// Verifies that |chain| only contains ChainedStructs of types enumerated in
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// |oneOfConstraints| and contains no duplicate sTypes. Each vector in
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// |oneOfConstraints| defines a set of sTypes that cannot coexist in the same chain.
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// For example:
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// ValidateSTypes(chain, { { ShaderModuleSPIRVDescriptor, ShaderModuleWGSLDescriptor } }))
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// ValidateSTypes(chain, { { Extension1 }, { Extension2 } })
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{% set namespace = metadata.namespace %}
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MaybeError ValidateSTypes(const ChainedStruct* chain,
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std::vector<std::vector<{{namespace}}::SType>> oneOfConstraints);
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template <typename T>
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MaybeError ValidateSingleSTypeInner(const ChainedStruct* chain, T sType) {
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DAWN_INVALID_IF(chain->sType != sType,
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"Unsupported sType (%s). Expected (%s)", chain->sType, sType);
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return {};
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}
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template <typename T, typename... Args>
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MaybeError ValidateSingleSTypeInner(const ChainedStruct* chain, T sType, Args... sTypes) {
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if (chain->sType == sType) {
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return {};
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}
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return ValidateSingleSTypeInner(chain, sTypes...);
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}
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// Verifies that |chain| contains a single ChainedStruct of type |sType| or no ChainedStructs
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// at all.
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template <typename T>
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MaybeError ValidateSingleSType(const ChainedStruct* chain, T sType) {
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if (chain == nullptr) {
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return {};
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}
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DAWN_INVALID_IF(chain->nextInChain != nullptr,
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"Chain can only contain a single chained struct.");
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return ValidateSingleSTypeInner(chain, sType);
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}
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// Verifies that |chain| contains a single ChainedStruct with a type enumerated in the
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// parameter pack or no ChainedStructs at all.
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template <typename T, typename... Args>
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MaybeError ValidateSingleSType(const ChainedStruct* chain, T sType, Args... sTypes) {
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if (chain == nullptr) {
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return {};
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}
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DAWN_INVALID_IF(chain->nextInChain != nullptr,
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"Chain can only contain a single chained struct.");
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return ValidateSingleSTypeInner(chain, sType, sTypes...);
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}
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} // namespace {{native_namespace}}
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#endif // {{DIR}}_CHAIN_UTILS_H_
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