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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/transform/transform.h"
#include <algorithm>
#include "src/program_builder.h"
TINT_INSTANTIATE_TYPEINFO(tint::transform::Data);
namespace tint {
namespace transform {
Data::Data() = default;
Data::Data(const Data&) = default;
Data::~Data() = default;
Data& Data::operator=(const Data&) = default;
DataMap::DataMap() = default;
DataMap::DataMap(DataMap&&) = default;
DataMap::~DataMap() = default;
DataMap& DataMap::operator=(DataMap&&) = default;
Output::Output() = default;
Output::Output(Program&& p) : program(std::move(p)) {}
Transform::Transform() = default;
Transform::~Transform() = default;
ast::Function* Transform::CloneWithStatementsAtStart(
CloneContext* ctx,
ast::Function* in,
ast::StatementList statements) {
for (auto* s : *in->body()) {
statements.emplace_back(ctx->Clone(s));
}
// Clone arguments outside of create() call to have deterministic ordering
auto source = ctx->Clone(in->source());
auto symbol = ctx->Clone(in->symbol());
auto params = ctx->Clone(in->params());
auto* return_type = ctx->Clone(in->return_type());
auto* body = ctx->dst->create<ast::BlockStatement>(
ctx->Clone(in->body()->source()), statements);
auto decos = ctx->Clone(in->decorations());
auto ret_decos = ctx->Clone(in->return_type_decorations());
return ctx->dst->create<ast::Function>(source, symbol, params, return_type,
body, decos, ret_decos);
}
ast::DecorationList Transform::RemoveDecorations(
CloneContext* ctx,
const ast::DecorationList& in,
std::function<bool(const ast::Decoration*)> should_remove) {
ast::DecorationList new_decorations;
for (auto* deco : in) {
if (!should_remove(deco)) {
new_decorations.push_back(ctx->Clone(deco));
}
}
return new_decorations;
}
ast::Type* Transform::CreateASTTypeFor(CloneContext* ctx, const sem::Type* ty) {
if (ty->Is<sem::Void>()) {
return ctx->dst->create<ast::Void>();
}
if (ty->Is<sem::I32>()) {
return ctx->dst->create<ast::I32>();
}
if (ty->Is<sem::U32>()) {
return ctx->dst->create<ast::U32>();
}
if (ty->Is<sem::F32>()) {
return ctx->dst->create<ast::F32>();
}
if (ty->Is<sem::Bool>()) {
return ctx->dst->create<ast::Bool>();
}
if (auto* m = ty->As<sem::Matrix>()) {
auto* el = CreateASTTypeFor(ctx, m->type());
return ctx->dst->create<ast::Matrix>(el, m->rows(), m->columns());
}
if (auto* v = ty->As<sem::Vector>()) {
auto* el = CreateASTTypeFor(ctx, v->type());
return ctx->dst->create<ast::Vector>(el, v->size());
}
if (auto* a = ty->As<sem::Array>()) {
auto* el = CreateASTTypeFor(ctx, a->ElemType());
ast::DecorationList decos;
if (!a->IsStrideImplicit()) {
decos.emplace_back(ctx->dst->create<ast::StrideDecoration>(a->Stride()));
}
return ctx->dst->create<ast::Array>(el, a->Count(), std::move(decos));
}
if (auto* s = ty->As<sem::Struct>()) {
return ctx->dst->create<ast::TypeName>(
ctx->Clone(s->Declaration()->name()));
}
TINT_UNREACHABLE(ctx->dst->Diagnostics())
<< "Unhandled type: " << ty->TypeInfo().name;
return nullptr;
}
} // namespace transform
} // namespace tint