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| 14 | pmbaty | 1 | //===- llvm/MC/MCAsmParserExtension.h - Asm Parser Hooks --------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |||
| 9 | #ifndef LLVM_MC_MCPARSER_MCASMPARSEREXTENSION_H |
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| 10 | #define LLVM_MC_MCPARSER_MCASMPARSEREXTENSION_H |
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| 11 | |||
| 12 | #include "llvm/ADT/STLFunctionalExtras.h" |
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| 13 | #include "llvm/ADT/StringRef.h" |
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| 14 | #include "llvm/MC/MCParser/MCAsmParser.h" |
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| 15 | #include "llvm/Support/SMLoc.h" |
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| 16 | |||
| 17 | namespace llvm { |
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| 18 | |||
| 19 | class Twine; |
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| 20 | |||
| 21 | /// Generic interface for extending the MCAsmParser, |
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| 22 | /// which is implemented by target and object file assembly parser |
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| 23 | /// implementations. |
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| 24 | class MCAsmParserExtension { |
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| 25 | MCAsmParser *Parser; |
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| 26 | |||
| 27 | protected: |
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| 28 | MCAsmParserExtension(); |
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| 29 | |||
| 30 | // Helper template for implementing static dispatch functions. |
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| 31 | template<typename T, bool (T::*Handler)(StringRef, SMLoc)> |
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| 32 | static bool HandleDirective(MCAsmParserExtension *Target, |
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| 33 | StringRef Directive, |
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| 34 | SMLoc DirectiveLoc) { |
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| 35 | T *Obj = static_cast<T*>(Target); |
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| 36 | return (Obj->*Handler)(Directive, DirectiveLoc); |
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| 37 | } |
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| 38 | |||
| 39 | bool BracketExpressionsSupported = false; |
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| 40 | |||
| 41 | public: |
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| 42 | MCAsmParserExtension(const MCAsmParserExtension &) = delete; |
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| 43 | MCAsmParserExtension &operator=(const MCAsmParserExtension &) = delete; |
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| 44 | virtual ~MCAsmParserExtension(); |
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| 45 | |||
| 46 | /// Initialize the extension for parsing using the given \p Parser. |
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| 47 | /// The extension should use the AsmParser interfaces to register its |
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| 48 | /// parsing routines. |
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| 49 | virtual void Initialize(MCAsmParser &Parser); |
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| 50 | |||
| 51 | /// \name MCAsmParser Proxy Interfaces |
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| 52 | /// @{ |
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| 53 | |||
| 54 | MCContext &getContext() { return getParser().getContext(); } |
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| 55 | |||
| 56 | MCAsmLexer &getLexer() { return getParser().getLexer(); } |
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| 57 | const MCAsmLexer &getLexer() const { |
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| 58 | return const_cast<MCAsmParserExtension *>(this)->getLexer(); |
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| 59 | } |
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| 60 | |||
| 61 | MCAsmParser &getParser() { return *Parser; } |
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| 62 | const MCAsmParser &getParser() const { |
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| 63 | return const_cast<MCAsmParserExtension*>(this)->getParser(); |
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| 64 | } |
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| 65 | |||
| 66 | SourceMgr &getSourceManager() { return getParser().getSourceManager(); } |
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| 67 | MCStreamer &getStreamer() { return getParser().getStreamer(); } |
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| 68 | |||
| 69 | bool Warning(SMLoc L, const Twine &Msg) { |
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| 70 | return getParser().Warning(L, Msg); |
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| 71 | } |
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| 72 | |||
| 73 | bool Error(SMLoc L, const Twine &Msg, SMRange Range = SMRange()) { |
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| 74 | return getParser().Error(L, Msg, Range); |
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| 75 | } |
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| 76 | |||
| 77 | void Note(SMLoc L, const Twine &Msg) { |
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| 78 | getParser().Note(L, Msg); |
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| 79 | } |
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| 80 | |||
| 81 | bool TokError(const Twine &Msg) { |
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| 82 | return getParser().TokError(Msg); |
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| 83 | } |
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| 84 | |||
| 85 | const AsmToken &Lex() { return getParser().Lex(); } |
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| 86 | const AsmToken &getTok() { return getParser().getTok(); } |
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| 87 | bool parseToken(AsmToken::TokenKind T, |
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| 88 | const Twine &Msg = "unexpected token") { |
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| 89 | return getParser().parseToken(T, Msg); |
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| 90 | } |
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| 91 | bool parseEOL() { return getParser().parseEOL(); } |
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| 92 | |||
| 93 | bool parseMany(function_ref<bool()> parseOne, bool hasComma = true) { |
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| 94 | return getParser().parseMany(parseOne, hasComma); |
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| 95 | } |
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| 96 | |||
| 97 | bool parseOptionalToken(AsmToken::TokenKind T) { |
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| 98 | return getParser().parseOptionalToken(T); |
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| 99 | } |
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| 100 | |||
| 101 | bool ParseDirectiveCGProfile(StringRef, SMLoc); |
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| 102 | |||
| 103 | bool check(bool P, const Twine &Msg) { |
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| 104 | return getParser().check(P, Msg); |
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| 105 | } |
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| 106 | |||
| 107 | bool check(bool P, SMLoc Loc, const Twine &Msg) { |
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| 108 | return getParser().check(P, Loc, Msg); |
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| 109 | } |
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| 110 | |||
| 111 | bool addErrorSuffix(const Twine &Suffix) { |
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| 112 | return getParser().addErrorSuffix(Suffix); |
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| 113 | } |
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| 114 | |||
| 115 | bool HasBracketExpressions() const { return BracketExpressionsSupported; } |
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| 116 | |||
| 117 | /// @} |
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| 118 | }; |
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| 119 | |||
| 120 | } // end namespace llvm |
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| 121 | |||
| 122 | #endif // LLVM_MC_MCPARSER_MCASMPARSEREXTENSION_H |