1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
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 | |