| /* |
| * 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 "include/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 |
