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| 8 | |
| 9 | #include "clang/ASTMatchers/Dynamic/Diagnostics.h" |
| 10 | |
| 11 | namespace clang { |
| 12 | namespace ast_matchers { |
| 13 | namespace dynamic { |
| 14 | Diagnostics::ArgStream Diagnostics::pushContextFrame(ContextType Type, |
| 15 | SourceRange Range) { |
| 16 | ContextStack.emplace_back(); |
| 17 | ContextFrame& data = ContextStack.back(); |
| 18 | data.Type = Type; |
| 19 | data.Range = Range; |
| 20 | return ArgStream(&data.Args); |
| 21 | } |
| 22 | |
| 23 | Diagnostics::Context::Context(ConstructMatcherEnum, Diagnostics *Error, |
| 24 | StringRef MatcherName, |
| 25 | SourceRange MatcherRange) |
| 26 | : Error(Error) { |
| 27 | Error->pushContextFrame(CT_MatcherConstruct, MatcherRange) << MatcherName; |
| 28 | } |
| 29 | |
| 30 | Diagnostics::Context::Context(MatcherArgEnum, Diagnostics *Error, |
| 31 | StringRef MatcherName, |
| 32 | SourceRange MatcherRange, |
| 33 | unsigned ArgNumber) |
| 34 | : Error(Error) { |
| 35 | Error->pushContextFrame(CT_MatcherArg, MatcherRange) << ArgNumber |
| 36 | << MatcherName; |
| 37 | } |
| 38 | |
| 39 | Diagnostics::Context::~Context() { Error->ContextStack.pop_back(); } |
| 40 | |
| 41 | Diagnostics::OverloadContext::OverloadContext(Diagnostics *Error) |
| 42 | : Error(Error), BeginIndex(Error->Errors.size()) {} |
| 43 | |
| 44 | Diagnostics::OverloadContext::~OverloadContext() { |
| 45 | |
| 46 | if (BeginIndex < Error->Errors.size()) { |
| 47 | Diagnostics::ErrorContent &Dest = Error->Errors[BeginIndex]; |
| 48 | for (size_t i = BeginIndex + 1, e = Error->Errors.size(); i < e; ++i) { |
| 49 | Dest.Messages.push_back(Error->Errors[i].Messages[0]); |
| 50 | } |
| 51 | Error->Errors.resize(BeginIndex + 1); |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | void Diagnostics::OverloadContext::revertErrors() { |
| 56 | |
| 57 | Error->Errors.resize(BeginIndex); |
| 58 | } |
| 59 | |
| 60 | Diagnostics::ArgStream &Diagnostics::ArgStream::operator<<(const Twine &Arg) { |
| 61 | Out->push_back(Arg.str()); |
| 62 | return *this; |
| 63 | } |
| 64 | |
| 65 | Diagnostics::ArgStream Diagnostics::addError(SourceRange Range, |
| 66 | ErrorType Error) { |
| 67 | Errors.emplace_back(); |
| 68 | ErrorContent &Last = Errors.back(); |
| 69 | Last.ContextStack = ContextStack; |
| 70 | Last.Messages.emplace_back(); |
| 71 | Last.Messages.back().Range = Range; |
| 72 | Last.Messages.back().Type = Error; |
| 73 | return ArgStream(&Last.Messages.back().Args); |
| 74 | } |
| 75 | |
| 76 | static StringRef contextTypeToFormatString(Diagnostics::ContextType Type) { |
| 77 | switch (Type) { |
| 78 | case Diagnostics::CT_MatcherConstruct: |
| 79 | return "Error building matcher $0."; |
| 80 | case Diagnostics::CT_MatcherArg: |
| 81 | return "Error parsing argument $0 for matcher $1."; |
| 82 | } |
| 83 | llvm_unreachable("Unknown ContextType value."); |
| 84 | } |
| 85 | |
| 86 | static StringRef errorTypeToFormatString(Diagnostics::ErrorType Type) { |
| 87 | switch (Type) { |
| 88 | case Diagnostics::ET_RegistryMatcherNotFound: |
| 89 | return "Matcher not found: $0"; |
| 90 | case Diagnostics::ET_RegistryWrongArgCount: |
| 91 | return "Incorrect argument count. (Expected = $0) != (Actual = $1)"; |
| 92 | case Diagnostics::ET_RegistryWrongArgType: |
| 93 | return "Incorrect type for arg $0. (Expected = $1) != (Actual = $2)"; |
| 94 | case Diagnostics::ET_RegistryNotBindable: |
| 95 | return "Matcher does not support binding."; |
| 96 | case Diagnostics::ET_RegistryAmbiguousOverload: |
| 97 | |
| 98 | return "Ambiguous matcher overload."; |
| 99 | case Diagnostics::ET_RegistryValueNotFound: |
| 100 | return "Value not found: $0"; |
| 101 | |
| 102 | case Diagnostics::ET_ParserStringError: |
| 103 | return "Error parsing string token: <$0>"; |
| 104 | case Diagnostics::ET_ParserNoOpenParen: |
| 105 | return "Error parsing matcher. Found token <$0> while looking for '('."; |
| 106 | case Diagnostics::ET_ParserNoCloseParen: |
| 107 | return "Error parsing matcher. Found end-of-code while looking for ')'."; |
| 108 | case Diagnostics::ET_ParserNoComma: |
| 109 | return "Error parsing matcher. Found token <$0> while looking for ','."; |
| 110 | case Diagnostics::ET_ParserNoCode: |
| 111 | return "End of code found while looking for token."; |
| 112 | case Diagnostics::ET_ParserNotAMatcher: |
| 113 | return "Input value is not a matcher expression."; |
| 114 | case Diagnostics::ET_ParserInvalidToken: |
| 115 | return "Invalid token <$0> found when looking for a value."; |
| 116 | case Diagnostics::ET_ParserMalformedBindExpr: |
| 117 | return "Malformed bind() expression."; |
| 118 | case Diagnostics::ET_ParserTrailingCode: |
| 119 | return "Expected end of code."; |
| 120 | case Diagnostics::ET_ParserNumberError: |
| 121 | return "Error parsing numeric literal: <$0>"; |
| 122 | case Diagnostics::ET_ParserOverloadedType: |
| 123 | return "Input value has unresolved overloaded type: $0"; |
| 124 | |
| 125 | case Diagnostics::ET_None: |
| 126 | return "<N/A>"; |
| 127 | } |
| 128 | llvm_unreachable("Unknown ErrorType value."); |
| 129 | } |
| 130 | |
| 131 | static void formatErrorString(StringRef FormatString, |
| 132 | ArrayRef<std::string> Args, |
| 133 | llvm::raw_ostream &OS) { |
| 134 | while (!FormatString.empty()) { |
| 135 | std::pair<StringRef, StringRef> Pieces = FormatString.split("$"); |
| 136 | OS << Pieces.first.str(); |
| 137 | if (Pieces.second.empty()) break; |
| 138 | |
| 139 | const char Next = Pieces.second.front(); |
| 140 | FormatString = Pieces.second.drop_front(); |
| 141 | if (Next >= '0' && Next <= '9') { |
| 142 | const unsigned Index = Next - '0'; |
| 143 | if (Index < Args.size()) { |
| 144 | OS << Args[Index]; |
| 145 | } else { |
| 146 | OS << "<Argument_Not_Provided>"; |
| 147 | } |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | static void maybeAddLineAndColumn(SourceRange Range, |
| 153 | llvm::raw_ostream &OS) { |
| 154 | if (Range.Start.Line > 0 && Range.Start.Column > 0) { |
| 155 | OS << Range.Start.Line << ":" << Range.Start.Column << ": "; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | static void printContextFrameToStream(const Diagnostics::ContextFrame &Frame, |
| 160 | llvm::raw_ostream &OS) { |
| 161 | maybeAddLineAndColumn(Frame.Range, OS); |
| 162 | formatErrorString(contextTypeToFormatString(Frame.Type), Frame.Args, OS); |
| 163 | } |
| 164 | |
| 165 | static void |
| 166 | printMessageToStream(const Diagnostics::ErrorContent::Message &Message, |
| 167 | const Twine Prefix, llvm::raw_ostream &OS) { |
| 168 | maybeAddLineAndColumn(Message.Range, OS); |
| 169 | OS << Prefix; |
| 170 | formatErrorString(errorTypeToFormatString(Message.Type), Message.Args, OS); |
| 171 | } |
| 172 | |
| 173 | static void printErrorContentToStream(const Diagnostics::ErrorContent &Content, |
| 174 | llvm::raw_ostream &OS) { |
| 175 | if (Content.Messages.size() == 1) { |
| 176 | printMessageToStream(Content.Messages[0], "", OS); |
| 177 | } else { |
| 178 | for (size_t i = 0, e = Content.Messages.size(); i != e; ++i) { |
| 179 | if (i != 0) OS << "\n"; |
| 180 | printMessageToStream(Content.Messages[i], |
| 181 | "Candidate " + Twine(i + 1) + ": ", OS); |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | void Diagnostics::printToStream(llvm::raw_ostream &OS) const { |
| 187 | for (size_t i = 0, e = Errors.size(); i != e; ++i) { |
| 188 | if (i != 0) OS << "\n"; |
| 189 | printErrorContentToStream(Errors[i], OS); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | std::string Diagnostics::toString() const { |
| 194 | std::string S; |
| 195 | llvm::raw_string_ostream OS(S); |
| 196 | printToStream(OS); |
| 197 | return OS.str(); |
| 198 | } |
| 199 | |
| 200 | void Diagnostics::printToStreamFull(llvm::raw_ostream &OS) const { |
| 201 | for (size_t i = 0, e = Errors.size(); i != e; ++i) { |
| 202 | if (i != 0) OS << "\n"; |
| 203 | const ErrorContent &Error = Errors[i]; |
| 204 | for (size_t i = 0, e = Error.ContextStack.size(); i != e; ++i) { |
| 205 | printContextFrameToStream(Error.ContextStack[i], OS); |
| 206 | OS << "\n"; |
| 207 | } |
| 208 | printErrorContentToStream(Error, OS); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | std::string Diagnostics::toStringFull() const { |
| 213 | std::string S; |
| 214 | llvm::raw_string_ostream OS(S); |
| 215 | printToStreamFull(OS); |
| 216 | return OS.str(); |
| 217 | } |
| 218 | |
| 219 | } |
| 220 | } |
| 221 | } |
| 222 | |