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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/ast/function.h"
#include "src/ast/stage_decoration.h"
#include "src/ast/workgroup_decoration.h"
#include "src/program_builder.h"
TINT_INSTANTIATE_TYPEINFO(tint::ast::Function);
namespace tint {
namespace ast {
Function::Function(ProgramID program_id,
const Source& source,
Symbol symbol,
VariableList params,
ast::Type* return_type,
BlockStatement* body,
DecorationList decorations,
DecorationList return_type_decorations)
: Base(program_id, source),
symbol_(symbol),
params_(std::move(params)),
return_type_(return_type),
body_(body),
decorations_(std::move(decorations)),
return_type_decorations_(std::move(return_type_decorations)) {
TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, symbol_, program_id);
TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, body, program_id);
for (auto* param : params_) {
TINT_ASSERT(AST, param && param->is_const());
TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, param, program_id);
}
TINT_ASSERT(AST, symbol_.IsValid());
TINT_ASSERT(AST, return_type_);
for (auto* deco : decorations_) {
TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, deco, program_id);
}
for (auto* deco : return_type_decorations_) {
TINT_ASSERT_PROGRAM_IDS_EQUAL_IF_VALID(AST, deco, program_id);
}
}
Function::Function(Function&&) = default;
Function::~Function() = default;
PipelineStage Function::pipeline_stage() const {
if (auto* stage = GetDecoration<StageDecoration>(decorations_)) {
return stage->value();
}
return PipelineStage::kNone;
}
const Statement* Function::get_last_statement() const {
return body_->last();
}
Function* Function::Clone(CloneContext* ctx) const {
// Clone arguments outside of create() call to have deterministic ordering
auto src = ctx->Clone(source());
auto sym = ctx->Clone(symbol());
auto p = ctx->Clone(params_);
auto* ret = ctx->Clone(return_type_);
auto* b = ctx->Clone(body_);
auto decos = ctx->Clone(decorations_);
auto ret_decos = ctx->Clone(return_type_decorations_);
return ctx->dst->create<Function>(src, sym, p, ret, b, decos, ret_decos);
}
void Function::to_str(const sem::Info& sem,
std::ostream& out,
size_t indent) const {
make_indent(out, indent);
out << "Function " << symbol_.to_str() << " -> " << return_type_->type_name()
<< std::endl;
for (auto* deco : decorations()) {
deco->to_str(sem, out, indent);
}
make_indent(out, indent);
out << "(";
if (params_.size() > 0) {
out << std::endl;
for (auto* param : params_)
param->to_str(sem, out, indent + 2);
make_indent(out, indent);
}
out << ")" << std::endl;
make_indent(out, indent);
out << "{" << std::endl;
if (body_ != nullptr) {
for (auto* stmt : *body_) {
stmt->to_str(sem, out, indent + 2);
}
}
make_indent(out, indent);
out << "}" << std::endl;
}
std::string Function::type_name() const {
std::ostringstream out;
out << "__func" + return_type_->type_name();
for (auto* param : params_) {
// No need for the sem::Variable here, functions params must have a
// type
out << param->type()->type_name();
}
return out.str();
}
Function* FunctionList::Find(Symbol sym) const {
for (auto* func : *this) {
if (func->symbol() == sym) {
return func;
}
}
return nullptr;
}
Function* FunctionList::Find(Symbol sym, PipelineStage stage) const {
for (auto* func : *this) {
if (func->symbol() == sym && func->pipeline_stage() == stage) {
return func;
}
}
return nullptr;
}
bool FunctionList::HasStage(ast::PipelineStage stage) const {
for (auto* func : *this) {
if (func->pipeline_stage() == stage) {
return true;
}
}
return false;
}
} // namespace ast
} // namespace tint