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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/clone_context.h"
#include <string>
#include "src/program_builder.h"
#include "src/utils/get_or_create.h"
TINT_INSTANTIATE_TYPEINFO(tint::Cloneable);
namespace tint {
CloneContext::ListTransforms::ListTransforms() = default;
CloneContext::ListTransforms::~ListTransforms() = default;
CloneContext::CloneContext(ProgramBuilder* to,
Program const* from,
bool auto_clone_symbols)
: dst(to), src(from) {
if (auto_clone_symbols) {
// Almost all transforms will want to clone all symbols before doing any
// work, to avoid any newly created symbols clashing with existing symbols
// in the source program and causing them to be renamed.
from->Symbols().Foreach([&](Symbol s, const std::string&) { Clone(s); });
}
}
CloneContext::CloneContext(ProgramBuilder* builder)
: CloneContext(builder, nullptr, false) {}
CloneContext::~CloneContext() = default;
Symbol CloneContext::Clone(Symbol s) {
if (!src) {
return s; // In-place clone
}
return utils::GetOrCreate(cloned_symbols_, s, [&]() -> Symbol {
if (symbol_transform_) {
return symbol_transform_(s);
}
return dst->Symbols().New(src->Symbols().NameFor(s));
});
}
void CloneContext::Clone() {
dst->AST().Copy(this, &src->AST());
dst->SetTransformApplied(src->TransformsApplied());
}
ast::FunctionList CloneContext::Clone(const ast::FunctionList& v) {
ast::FunctionList out;
out.reserve(v.size());
for (ast::Function* el : v) {
out.Add(Clone(el));
}
return out;
}
diag::List& CloneContext::Diagnostics() const {
return dst->Diagnostics();
}
CloneContext::CloneableTransform::CloneableTransform() = default;
CloneContext::CloneableTransform::CloneableTransform(
const CloneableTransform&) = default;
CloneContext::CloneableTransform::~CloneableTransform() = default;
} // namespace tint