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// Copyright 2021 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 "dawn_native/ChainUtils_autogen.h"
#include <unordered_set>
namespace dawn_native {
{% for value in types["s type"].values %}
{% if value.valid %}
void FindInChain(const ChainedStruct* chain, const {{as_cppEnum(value.name)}}** out) {
for (; chain; chain = chain->nextInChain) {
if (chain->sType == wgpu::SType::{{as_cppEnum(value.name)}}) {
*out = static_cast<const {{as_cppEnum(value.name)}}*>(chain);
break;
}
}
}
{% endif %}
{% endfor %}
MaybeError ValidateSTypes(const ChainedStruct* chain,
std::vector<std::vector<wgpu::SType>> oneOfConstraints) {
std::unordered_set<wgpu::SType> allSTypes;
for (; chain; chain = chain->nextInChain) {
if (allSTypes.find(chain->sType) != allSTypes.end()) {
return DAWN_VALIDATION_ERROR("Chain cannot have duplicate sTypes");
}
allSTypes.insert(chain->sType);
}
for (const auto& oneOfConstraint : oneOfConstraints) {
bool satisfied = false;
for (wgpu::SType oneOfSType : oneOfConstraint) {
if (allSTypes.find(oneOfSType) != allSTypes.end()) {
if (satisfied) {
return DAWN_VALIDATION_ERROR("Unsupported sType combination");
}
satisfied = true;
allSTypes.erase(oneOfSType);
}
}
}
if (!allSTypes.empty()) {
return DAWN_VALIDATION_ERROR("Unsupported sType");
}
return {};
}
} // namespace dawn_native