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// Copyright 2020 The Tint 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 "src/tint/lang/wgsl/ast/clone_context.h"
#include <string>
#include "src/tint/lang/wgsl/ast/builder.h"
#include "src/tint/utils/containers/map.h"
namespace tint::ast {
CloneContext::CloneContext(ast::Builder* to, GenerationID from) : dst(to), src_id(from) {}
CloneContext::~CloneContext() = default;
Symbol CloneContext::Clone(Symbol s) {
return cloned_symbols_.GetOrCreate(s, [&]() -> Symbol {
if (symbol_transform_) {
return symbol_transform_(s);
}
return dst->Symbols().New(s.Name());
});
}
ast::FunctionList CloneContext::Clone(const ast::FunctionList& v) {
ast::FunctionList out;
out.Reserve(v.Length());
for (const ast::Function* el : v) {
out.Add(Clone(el));
}
return out;
}
ast::Type CloneContext::Clone(const ast::Type& ty) {
return {Clone(ty.expr)};
}
const ast::Node* CloneContext::CloneNode(const ast::Node* node) {
// If the input is nullptr, there's nothing to clone - just return nullptr.
if (node == nullptr) {
return nullptr;
}
// Was Replace() called for this node?
if (auto fn = replacements_.Find(node)) {
return (*fn)();
}
// Attempt to clone using the registered replacer functions.
auto& typeinfo = node->TypeInfo();
for (auto& transform : transforms_) {
if (typeinfo.Is(transform.typeinfo)) {
if (auto* transformed = transform.function(node)) {
return transformed;
}
break;
}
}
// No transform for this type, or the transform returned nullptr.
// Clone with T::Clone().
return node->Clone(*this);
}
void CloneContext::CheckedCastFailure(const ast::Node* got, const TypeInfo& expected) {
TINT_ICE() << "Cloned object was not of the expected type\n"
<< "got: " << got->TypeInfo().name << "\n"
<< "expected: " << expected.name;
}
diag::List& CloneContext::Diagnostics() const {
return dst->Diagnostics();
}
CloneContext::CloneableTransform::CloneableTransform() = default;
CloneContext::CloneableTransform::CloneableTransform(const CloneableTransform&) = default;
CloneContext::CloneableTransform::~CloneableTransform() = default;
} // namespace tint::ast