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// Copyright 2022 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.
#ifndef SRC_TINT_IR_IF_H_
#define SRC_TINT_IR_IF_H_
#include "src/tint/ast/if_statement.h"
#include "src/tint/ir/flow_node.h"
#include "src/tint/ir/value.h"
// Forward declarations
namespace tint::ir {
class Block;
} // namespace tint::ir
namespace tint::ir {
/// A flow node representing an if statement.
class If : public Castable<If, FlowNode> {
public:
/// Constructor
/// @param stmt the ast::IfStatement or ast::BreakIfStatement
explicit If(const ast::Statement* stmt);
~If() override;
/// The ast::IfStatement or ast::BreakIfStatement source for this flow node.
const ast::Statement* source;
/// The true branch block
Block* true_target = nullptr;
/// The false branch block
Block* false_target = nullptr;
/// An block to reconvert the true/false barnches. The block always exists, but there maybe no
/// branches into it. (e.g. if both branches `return`)
Block* merge_target = nullptr;
/// Value holding the condition result
const Value* condition = nullptr;
};
} // namespace tint::ir
#endif // SRC_TINT_IR_IF_H_