// 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.
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//
//     http://www.apache.org/licenses/LICENSE-2.0
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#ifndef SRC_TINT_LANG_WGSL_AST_TRANSFORM_PROMOTE_SIDE_EFFECTS_TO_DECL_H_
#define SRC_TINT_LANG_WGSL_AST_TRANSFORM_PROMOTE_SIDE_EFFECTS_TO_DECL_H_

#include "src/tint/lang/wgsl/ast/transform/transform.h"

namespace tint::ast::transform {

/// A transform that hoists expressions with side-effects to variable
/// declarations before the statement of usage with the goal of ensuring
/// left-to-right order of evaluation, while respecting short-circuit
/// evaluation.
class PromoteSideEffectsToDecl final : public Castable<PromoteSideEffectsToDecl, Transform> {
  public:
    /// Constructor
    PromoteSideEffectsToDecl();

    /// Destructor
    ~PromoteSideEffectsToDecl() override;

    /// @copydoc Transform::Apply
    ApplyResult Apply(const Program* program,
                      const DataMap& inputs,
                      DataMap& outputs) const override;
};

}  // namespace tint::ast::transform

#endif  // SRC_TINT_LANG_WGSL_AST_TRANSFORM_PROMOTE_SIDE_EFFECTS_TO_DECL_H_