src/tint/lang/wgsl/sem/value_conversion.h

// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef SRC_TINT_LANG_WGSL_SEM_VALUE_CONVERSION_H_
#define SRC_TINT_LANG_WGSL_SEM_VALUE_CONVERSION_H_

#include "src/tint/lang/wgsl/sem/call_target.h"

namespace tint::sem {

/// ValueConversion is the CallTarget for a value conversion (cast).
class ValueConversion final : public Castable<ValueConversion, CallTarget> {
  public:
    /// Constructor
    /// @param type the target type of the cast
    /// @param parameter the type cast parameter
    /// @param stage the earliest evaluation stage for the expression
    ValueConversion(const core::type::Type* type,
                    sem::Parameter* parameter,
                    core::EvaluationStage stage);

    /// Destructor
    ~ValueConversion() override;

    /// @returns the cast source type
    const core::type::Type* Source() const { return Parameters()[0]->Type(); }

    /// @returns the cast target type
    const core::type::Type* Target() const { return ReturnType(); }
};

}  // namespace tint::sem

#endif  // SRC_TINT_LANG_WGSL_SEM_VALUE_CONVERSION_H_