// Copyright 2022 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_AST_TRANSFORM_PROMOTE_INITIALIZERS_TO_LET_H_ #define SRC_TINT_LANG_WGSL_AST_TRANSFORM_PROMOTE_INITIALIZERS_TO_LET_H_ #include "src/tint/lang/wgsl/ast/transform/transform.h" namespace tint::ast::transform { /// A transform that hoists array and structure initializers, and identifiers resolving to a /// 'const' array to a 'let' variable, declared just before the statement of usage. /// This transform is used by backends that do not support expressions that operate on an immediate /// array or structure. For example, the following is not immediately expressible for HLSL: /// `array<i32, 2>(1, 2)[0]` /// @see crbug.com/tint/406 class PromoteInitializersToLet final : public Castable<PromoteInitializersToLet, Transform> { … }; } // namespace tint::ast::transform #endif // SRC_TINT_LANG_WGSL_AST_TRANSFORM_PROMOTE_INITIALIZERS_TO_LET_H_