| 47 | } // namespace |
| 48 | |
| 49 | Status TextPreprocessor::Rewrite(const std::string& input, |
| 50 | std::string* output) { |
| 51 | absl::string_view s = input; |
| 52 | std::string result; |
| 53 | while (true) { |
| 54 | absl::string_view inline_block = FindInlineBlock(s, inline_delimiter_); |
| 55 | result.append(s.data(), inline_block.data() - s.data()); |
| 56 | if (inline_block.empty()) { |
| 57 | break; |
| 58 | } |
| 59 | if (inline_block.size() == 1) { |
| 60 | return NotFoundError("Unable to find end of inline block"); |
| 61 | } |
| 62 | s = PastSubstr(s, inline_block); |
| 63 | bool processed = false; |
| 64 | for (auto& rewrite : inline_rewrites_) { |
| 65 | if (processed) { |
| 66 | break; |
| 67 | } |
| 68 | switch (rewrite->Rewrite(inline_block.substr(1, inline_block.size() - 2), |
| 69 | &result)) { |
| 70 | case RewriteStatus::NOT_RECOGNIZED: |
| 71 | // try another rewrite. |
| 72 | break; |
| 73 | case RewriteStatus::SUCCESS: |
| 74 | processed = true; |
| 75 | break; |
| 76 | case RewriteStatus::ERROR: |
| 77 | return InternalError(absl::StrCat("Error while rewriting '", |
| 78 | inline_block, "': ", result)); |
| 79 | } |
| 80 | } |
| 81 | if (!processed) { |
| 82 | if (!keep_unknown_rewrites_) { |
| 83 | return NotFoundError(absl::StrCat("Didn't find inline rewrite for '", |
| 84 | inline_block, "'")); |
| 85 | } |
| 86 | absl::StrAppend(&result, inline_block); |
| 87 | } |
| 88 | } |
| 89 | *output = std::move(result); |
| 90 | return OkStatus(); |
| 91 | } |
| 92 | |
| 93 | } // namespace gl |
| 94 | } // namespace gpu |