66 lines
2.5 KiB
C++
66 lines
2.5 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 impl_dir = metadata.impl_dir + "/" if metadata.impl_dir else "" %}
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{% set namespace_name = Name(metadata.native_namespace) %}
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{% set native_namespace = namespace_name.namespace_case() %}
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{% set native_dir = impl_dir + namespace_name.Dirs() %}
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#include "{{native_dir}}/ChainUtils_autogen.h"
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#include <unordered_set>
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namespace {{native_namespace}} {
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{% set namespace = metadata.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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for (; chain; chain = chain->nextInChain) {
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if (chain->sType == {{namespace}}::SType::{{as_cppEnum(value.name)}}) {
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*out = static_cast<const {{as_cppEnum(value.name)}}*>(chain);
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break;
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}
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}
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}
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{% endif %}
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{% endfor %}
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MaybeError ValidateSTypes(const ChainedStruct* chain,
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std::vector<std::vector<{{namespace}}::SType>> oneOfConstraints) {
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std::unordered_set<{{namespace}}::SType> allSTypes;
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for (; chain; chain = chain->nextInChain) {
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DAWN_INVALID_IF(allSTypes.find(chain->sType) != allSTypes.end(),
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"Extension chain has duplicate sType %s.", chain->sType);
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allSTypes.insert(chain->sType);
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}
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for (const auto& oneOfConstraint : oneOfConstraints) {
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bool satisfied = false;
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for ({{namespace}}::SType oneOfSType : oneOfConstraint) {
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if (allSTypes.find(oneOfSType) != allSTypes.end()) {
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DAWN_INVALID_IF(satisfied,
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"sType %s is part of a group of exclusive sTypes that is already present.",
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oneOfSType);
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satisfied = true;
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allSTypes.erase(oneOfSType);
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}
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}
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}
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DAWN_INVALID_IF(!allSTypes.empty(), "Unsupported sType %s.", *allSTypes.begin());
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return {};
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}
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} // namespace {{native_namespace}}
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