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| 1 | //===-- include/flang/Parser/instrumented-parser.h --------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef FORTRAN_PARSER_INSTRUMENTED_PARSER_H_ |
| 10 | #define FORTRAN_PARSER_INSTRUMENTED_PARSER_H_ |
| 11 | |
| 12 | #include "parse-state.h" |
| 13 | #include "user-state.h" |
| 14 | #include "flang/Parser/message.h" |
| 15 | #include "flang/Parser/provenance.h" |
| 16 | #include <cstddef> |
| 17 | #include <map> |
| 18 | |
| 19 | namespace llvm { |
| 20 | class raw_ostream; |
| 21 | } |
| 22 | |
| 23 | namespace Fortran::parser { |
| 24 | |
| 25 | class ParsingLog { |
| 26 | public: |
| 27 | ParsingLog() {} |
| 28 | |
| 29 | void clear(); |
| 30 | |
| 31 | bool Fails(const char *at, const MessageFixedText &tag, ParseState &); |
| 32 | void Note(const char *at, const MessageFixedText &tag, bool pass, |
| 33 | const ParseState &); |
| 34 | void Dump(llvm::raw_ostream &, const AllCookedSources &) const; |
| 35 | |
| 36 | private: |
| 37 | struct LogForPosition { |
| 38 | struct Entry { |
| 39 | Entry() {} |
| 40 | bool pass{true}; |
| 41 | int count{0}; |
| 42 | bool deferred{false}; |
| 43 | Messages messages; |
| 44 | }; |
| 45 | std::map<MessageFixedText, Entry> perTag; |
| 46 | }; |
| 47 | std::map<std::size_t, LogForPosition> perPos_; |
| 48 | }; |
| 49 | |
| 50 | template <typename PA> class InstrumentedParser { |
| 51 | public: |
| 52 | using resultType = typename PA::resultType; |
| 53 | constexpr InstrumentedParser(const InstrumentedParser &) = default; |
| 54 | constexpr InstrumentedParser(const MessageFixedText &tag, const PA &parser) |
| 55 | : tag_{tag}, parser_{parser} {} |
| 56 | std::optional<resultType> Parse(ParseState &state) const { |
| 57 | if (UserState * ustate{state.userState()}) { |
| 58 | if (ParsingLog * log{ustate->log()}) { |
| 59 | const char *at{state.GetLocation()}; |
| 60 | if (log->Fails(at, tag_, state)) { |
| 61 | return std::nullopt; |
| 62 | } |
| 63 | Messages messages{std::move(state.messages())}; |
| 64 | std::optional<resultType> result{parser_.Parse(state)}; |
| 65 | log->Note(at, tag_, result.has_value(), state); |
| 66 | state.messages().Annex(std::move(messages)); |
| 67 | return result; |
| 68 | } |
| 69 | } |
| 70 | return parser_.Parse(state); |
| 71 | } |
| 72 | |
| 73 | private: |
| 74 | const MessageFixedText tag_; |
| 75 | const PA parser_; |
| 76 | }; |
| 77 | |
| 78 | template <typename PA> |
| 79 | inline constexpr auto instrumented( |
| 80 | const MessageFixedText &tag, const PA &parser) { |
| 81 | return InstrumentedParser{tag, parser}; |
| 82 | } |
| 83 | } // namespace Fortran::parser |
| 84 | #endif // FORTRAN_PARSER_INSTRUMENTED_PARSER_H_ |
| 85 |
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