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// Copyright 2021 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/program.h"
#include <utility>
#include "src/tint/resolver/resolver.h"
#include "src/tint/sem/type_expression.h"
#include "src/tint/sem/value_expression.h"
#include "src/tint/switch.h"
namespace tint {
namespace {
std::string DefaultPrinter(const Program*) {
return "<no program printer assigned>";
}
} // namespace
Program::Printer Program::printer = DefaultPrinter;
Program::Program() = default;
Program::Program(Program&& program)
: id_(std::move(program.id_)),
highest_node_id_(std::move(program.highest_node_id_)),
types_(std::move(program.types_)),
ast_nodes_(std::move(program.ast_nodes_)),
sem_nodes_(std::move(program.sem_nodes_)),
constant_nodes_(std::move(program.constant_nodes_)),
ast_(std::move(program.ast_)),
sem_(std::move(program.sem_)),
symbols_(std::move(program.symbols_)),
diagnostics_(std::move(program.diagnostics_)),
is_valid_(program.is_valid_) {
program.AssertNotMoved();
program.moved_ = true;
}
Program::Program(ProgramBuilder&& builder) {
id_ = builder.ID();
highest_node_id_ = builder.LastAllocatedNodeID();
is_valid_ = builder.IsValid();
if (builder.ResolveOnBuild() && builder.IsValid()) {
resolver::Resolver resolver(&builder);
if (!resolver.Resolve()) {
is_valid_ = false;
}
}
// The above must be called *before* the calls to std::move() below
types_ = std::move(builder.Types());
ast_nodes_ = std::move(builder.ASTNodes());
sem_nodes_ = std::move(builder.SemNodes());
constant_nodes_ = std::move(builder.ConstantNodes());
ast_ = &builder.AST(); // ast::Module is actually a heap allocation.
sem_ = std::move(builder.Sem());
symbols_ = std::move(builder.Symbols());
diagnostics_.add(std::move(builder.Diagnostics()));
builder.MarkAsMoved();
if (!is_valid_ && !diagnostics_.contains_errors()) {
// If the builder claims to be invalid, then we really should have an error
// message generated. If we find a situation where the program is not valid
// and there are no errors reported, add one here.
diagnostics_.add_error(diag::System::Program, "invalid program generated");
}
}
Program::~Program() = default;
Program& Program::operator=(Program&& program) {
program.AssertNotMoved();
program.moved_ = true;
moved_ = false;
id_ = std::move(program.id_);
highest_node_id_ = std::move(program.highest_node_id_);
types_ = std::move(program.types_);
ast_nodes_ = std::move(program.ast_nodes_);
sem_nodes_ = std::move(program.sem_nodes_);
constant_nodes_ = std::move(program.constant_nodes_);
ast_ = std::move(program.ast_);
sem_ = std::move(program.sem_);
symbols_ = std::move(program.symbols_);
diagnostics_ = std::move(program.diagnostics_);
is_valid_ = program.is_valid_;
return *this;
}
Program Program::Clone() const {
AssertNotMoved();
return Program(CloneAsBuilder());
}
ProgramBuilder Program::CloneAsBuilder() const {
AssertNotMoved();
ProgramBuilder out;
CloneContext(&out, this).Clone();
return out;
}
bool Program::IsValid() const {
AssertNotMoved();
return is_valid_;
}
const type::Type* Program::TypeOf(const ast::Expression* expr) const {
return tint::Switch(
Sem().Get(expr), //
[](const sem::ValueExpression* ty_expr) { return ty_expr->Type(); },
[](const sem::TypeExpression* ty_expr) { return ty_expr->Type(); });
}
const type::Type* Program::TypeOf(const ast::Variable* var) const {
auto* sem = Sem().Get(var);
return sem ? sem->Type() : nullptr;
}
const type::Type* Program::TypeOf(const ast::TypeDecl* type_decl) const {
return Sem().Get(type_decl);
}
std::string Program::FriendlyName(ast::Type type) const {
TINT_ASSERT_PROGRAM_IDS_EQUAL(Program, type, ID());
return type ? Symbols().NameFor(type->identifier->symbol) : "<null>";
}
std::string Program::FriendlyName(const type::Type* type) const {
return type ? type->FriendlyName(Symbols()) : "<null>";
}
std::string Program::FriendlyName(std::nullptr_t) const {
return "<null>";
}
void Program::AssertNotMoved() const {
TINT_ASSERT(Program, !moved_);
}
} // namespace tint