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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/lang/wgsl/sem/variable.h"
#include <utility>
#include "src/tint/lang/core/type/pointer.h"
#include "src/tint/lang/wgsl/ast/identifier_expression.h"
#include "src/tint/lang/wgsl/ast/parameter.h"
#include "src/tint/lang/wgsl/ast/variable.h"
TINT_INSTANTIATE_TYPEINFO(tint::sem::Variable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::GlobalVariable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::LocalVariable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::Parameter);
TINT_INSTANTIATE_TYPEINFO(tint::sem::VariableUser);
namespace tint::sem {
Variable::Variable(const ast::Variable* declaration,
const type::Type* type,
EvaluationStage stage,
builtin::AddressSpace address_space,
builtin::Access access,
const constant::Value* constant_value)
: declaration_(declaration),
type_(type),
stage_(stage),
address_space_(address_space),
access_(access),
constant_value_(constant_value) {}
Variable::~Variable() = default;
LocalVariable::LocalVariable(const ast::Variable* declaration,
const type::Type* type,
EvaluationStage stage,
builtin::AddressSpace address_space,
builtin::Access access,
const sem::Statement* statement,
const constant::Value* constant_value)
: Base(declaration, type, stage, address_space, access, constant_value),
statement_(statement) {}
LocalVariable::~LocalVariable() = default;
GlobalVariable::GlobalVariable(const ast::Variable* declaration,
const type::Type* type,
EvaluationStage stage,
builtin::AddressSpace address_space,
builtin::Access access,
const constant::Value* constant_value,
std::optional<tint::BindingPoint> binding_point,
std::optional<uint32_t> location,
std::optional<uint32_t> index)
: Base(declaration, type, stage, address_space, access, constant_value),
binding_point_(binding_point),
location_(location),
index_(index) {}
GlobalVariable::~GlobalVariable() = default;
Parameter::Parameter(const ast::Parameter* declaration,
uint32_t index,
const type::Type* type,
builtin::AddressSpace address_space,
builtin::Access access,
const ParameterUsage usage /* = ParameterUsage::kNone */,
std::optional<tint::BindingPoint> binding_point /* = {} */,
std::optional<uint32_t> location /* = std::nullopt */)
: Base(declaration, type, EvaluationStage::kRuntime, address_space, access, nullptr),
index_(index),
usage_(usage),
binding_point_(binding_point),
location_(location) {}
Parameter::~Parameter() = default;
VariableUser::VariableUser(const ast::IdentifierExpression* declaration,
EvaluationStage stage,
Statement* statement,
const constant::Value* constant,
sem::Variable* variable)
: Base(declaration,
variable->Type(),
stage,
statement,
constant,
/* has_side_effects */ false),
variable_(variable) {
auto* type = variable->Type();
if (type->Is<type::Pointer>() && variable->Initializer()) {
root_identifier_ = variable->Initializer()->RootIdentifier();
} else {
root_identifier_ = variable;
}
}
VariableUser::~VariableUser() = default;
} // namespace tint::sem