| /* | |
| * Copyright 2022 Google LLC. | |
| * | |
| * Use of this source code is governed by a BSD-style license that can be | |
| * found in the LICENSE file. | |
| */ | |
| #include "src/sksl/SkSLPosition.h" | |
| #include <algorithm> | |
| namespace SkSL { | |
| int Position::line(std::string_view source) const { | |
| SkASSERT(this->valid()); | |
| if (fStartOffset == -1) { | |
| return -1; | |
| } | |
| if (!source.data()) { | |
| return -1; | |
| } | |
| // we allow the offset to equal the length, because that's where TK_END_OF_FILE is reported | |
| SkASSERT(fStartOffset <= (int)source.length()); | |
| int offset = std::min(fStartOffset, (int)source.length()); | |
| int line = 1; | |
| for (int i = 0; i < offset; i++) { | |
| if (source[i] == '\n') { | |
| ++line; | |
| } | |
| } | |
| return line; | |
| } | |
| } // namespace SkSL |