tint->dawn: Shuffle source tree in preperation of merging repos
docs/ -> docs/tint/
fuzzers/ -> src/tint/fuzzers/
samples/ -> src/tint/cmd/
src/ -> src/tint/
test/ -> test/tint/
BUG=tint:1418,tint:1433
Change-Id: Id2aa79f989aef3245b80ef4aa37a27ff16cd700b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/80482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
diff --git a/src/tint/clone_context.cc b/src/tint/clone_context.cc
new file mode 100644
index 0000000..afdf488
--- /dev/null
+++ b/src/tint/clone_context.cc
@@ -0,0 +1,116 @@
+// 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/clone_context.h"
+
+#include <string>
+
+#include "src/tint/program_builder.h"
+#include "src/tint/utils/map.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());
+}
+
+ast::FunctionList CloneContext::Clone(const ast::FunctionList& v) {
+ ast::FunctionList out;
+ out.reserve(v.size());
+ for (const ast::Function* el : v) {
+ out.Add(Clone(el));
+ }
+ return out;
+}
+
+const tint::Cloneable* CloneContext::CloneCloneable(const Cloneable* object) {
+ // If the input is nullptr, there's nothing to clone - just return nullptr.
+ if (object == nullptr) {
+ return nullptr;
+ }
+
+ // Was Replace() called for this object?
+ auto it = replacements_.find(object);
+ if (it != replacements_.end()) {
+ return it->second();
+ }
+
+ // Attempt to clone using the registered replacer functions.
+ auto& typeinfo = object->TypeInfo();
+ for (auto& transform : transforms_) {
+ if (typeinfo.Is(transform.typeinfo)) {
+ if (auto* transformed = transform.function(object)) {
+ return transformed;
+ }
+ break;
+ }
+ }
+
+ // No transform for this type, or the transform returned nullptr.
+ // Clone with T::Clone().
+ return object->Clone(this);
+}
+
+void CloneContext::CheckedCastFailure(const Cloneable* got,
+ const TypeInfo& expected) {
+ TINT_ICE(Clone, Diagnostics())
+ << "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
