// 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_GET_INSERTION_POINT_H_ #define SRC_TINT_LANG_WGSL_AST_TRANSFORM_GET_INSERTION_POINT_H_ #include <utility> #include "src/tint/lang/wgsl/ast/builder.h" #include "src/tint/lang/wgsl/sem/block_statement.h" // Forward declarations namespace tint::program { class CloneContext; } namespace tint::ast::transform::utils { /// InsertionPoint is a pair of the block (`first`) within which, and the /// statement (`second`) before or after which to insert. InsertionPoint; /// For the input statement, returns the block and statement within that /// block to insert before/after. If `stmt` is a for-loop continue statement, /// the function returns {nullptr, nullptr} as we cannot insert before/after it. /// @param ctx the clone context /// @param stmt the statement to insert before or after /// @return the insertion point InsertionPoint GetInsertionPoint(program::CloneContext& ctx, const Statement* stmt); } // namespace tint::ast::transform::utils #endif // SRC_TINT_LANG_WGSL_AST_TRANSFORM_GET_INSERTION_POINT_H_