// 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_EXPAND_COMPOUND_ASSIGNMENT_H_ #define SRC_TINT_LANG_WGSL_AST_TRANSFORM_EXPAND_COMPOUND_ASSIGNMENT_H_ #include "src/tint/lang/wgsl/ast/transform/transform.h" namespace tint::ast::transform { /// Converts compound assignment statements to regular assignment statements, /// hoisting the LHS expression if necessary. /// /// Before: /// ``` /// a += 1; /// vector_array[foo()][bar()] *= 2.0; /// ``` /// /// After: /// ``` /// a = a + 1; /// let _vec = &vector_array[foo()]; /// let _idx = bar(); /// (*_vec)[_idx] = (*_vec)[_idx] * 2.0; /// ``` /// /// This transform also handles increment and decrement statements in the same /// manner, by replacing `i++` with `i = i + 1`. class ExpandCompoundAssignment final : public Castable<ExpandCompoundAssignment, Transform> { … }; } // namespace tint::ast::transform #endif // SRC_TINT_LANG_WGSL_AST_TRANSFORM_EXPAND_COMPOUND_ASSIGNMENT_H_