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13 | #include "clang/Lex/MacroInfo.h" |
14 | #include "clang/Basic/IdentifierTable.h" |
15 | #include "clang/Basic/LLVM.h" |
16 | #include "clang/Basic/SourceLocation.h" |
17 | #include "clang/Basic/SourceManager.h" |
18 | #include "clang/Basic/TokenKinds.h" |
19 | #include "clang/Lex/Preprocessor.h" |
20 | #include "clang/Lex/Token.h" |
21 | #include "llvm/ADT/Optional.h" |
22 | #include "llvm/ADT/StringRef.h" |
23 | #include "llvm/Support/Casting.h" |
24 | #include "llvm/Support/Compiler.h" |
25 | #include "llvm/Support/raw_ostream.h" |
26 | #include <cassert> |
27 | #include <utility> |
28 | |
29 | using namespace clang; |
30 | |
31 | MacroInfo::MacroInfo(SourceLocation DefLoc) |
32 | : Location(DefLoc), IsDefinitionLengthCached(false), IsFunctionLike(false), |
33 | IsC99Varargs(false), IsGNUVarargs(false), IsBuiltinMacro(false), |
34 | HasCommaPasting(false), IsDisabled(false), IsUsed(false), |
35 | IsAllowRedefinitionsWithoutWarning(false), IsWarnIfUnused(false), |
36 | UsedForHeaderGuard(false) {} |
37 | |
38 | unsigned MacroInfo::getDefinitionLengthSlow(const SourceManager &SM) const { |
39 | assert(!IsDefinitionLengthCached); |
40 | IsDefinitionLengthCached = true; |
41 | |
42 | if (ReplacementTokens.empty()) |
43 | return (DefinitionLength = 0); |
44 | |
45 | const Token &firstToken = ReplacementTokens.front(); |
46 | const Token &lastToken = ReplacementTokens.back(); |
47 | SourceLocation macroStart = firstToken.getLocation(); |
48 | SourceLocation macroEnd = lastToken.getLocation(); |
49 | assert(macroStart.isValid() && macroEnd.isValid()); |
50 | (0) . __assert_fail ("(macroStart.isFileID() || firstToken.is(tok..comment)) && \"Macro defined in macro?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 51, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((macroStart.isFileID() || firstToken.is(tok::comment)) && |
51 | (0) . __assert_fail ("(macroStart.isFileID() || firstToken.is(tok..comment)) && \"Macro defined in macro?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 51, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Macro defined in macro?"); |
52 | (0) . __assert_fail ("(macroEnd.isFileID() || lastToken.is(tok..comment)) && \"Macro defined in macro?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 53, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((macroEnd.isFileID() || lastToken.is(tok::comment)) && |
53 | (0) . __assert_fail ("(macroEnd.isFileID() || lastToken.is(tok..comment)) && \"Macro defined in macro?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 53, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Macro defined in macro?"); |
54 | std::pair<FileID, unsigned> |
55 | startInfo = SM.getDecomposedExpansionLoc(macroStart); |
56 | std::pair<FileID, unsigned> |
57 | endInfo = SM.getDecomposedExpansionLoc(macroEnd); |
58 | (0) . __assert_fail ("startInfo.first == endInfo.first && \"Macro definition spanning multiple FileIDs ?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 59, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(startInfo.first == endInfo.first && |
59 | (0) . __assert_fail ("startInfo.first == endInfo.first && \"Macro definition spanning multiple FileIDs ?\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 59, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Macro definition spanning multiple FileIDs ?"); |
60 | assert(startInfo.second <= endInfo.second); |
61 | DefinitionLength = endInfo.second - startInfo.second; |
62 | DefinitionLength += lastToken.getLength(); |
63 | |
64 | return DefinitionLength; |
65 | } |
66 | |
67 | |
68 | |
69 | |
70 | |
71 | |
72 | |
73 | |
74 | bool MacroInfo::isIdenticalTo(const MacroInfo &Other, Preprocessor &PP, |
75 | bool Syntactically) const { |
76 | bool Lexically = !Syntactically; |
77 | |
78 | |
79 | if (ReplacementTokens.size() != Other.ReplacementTokens.size() || |
80 | getNumParams() != Other.getNumParams() || |
81 | isFunctionLike() != Other.isFunctionLike() || |
82 | isC99Varargs() != Other.isC99Varargs() || |
83 | isGNUVarargs() != Other.isGNUVarargs()) |
84 | return false; |
85 | |
86 | if (Lexically) { |
87 | |
88 | for (param_iterator I = param_begin(), OI = Other.param_begin(), |
89 | E = param_end(); |
90 | I != E; ++I, ++OI) |
91 | if (*I != *OI) return false; |
92 | } |
93 | |
94 | |
95 | for (unsigned i = 0, e = ReplacementTokens.size(); i != e; ++i) { |
96 | const Token &A = ReplacementTokens[i]; |
97 | const Token &B = Other.ReplacementTokens[i]; |
98 | if (A.getKind() != B.getKind()) |
99 | return false; |
100 | |
101 | |
102 | |
103 | if (i != 0 && |
104 | (A.isAtStartOfLine() != B.isAtStartOfLine() || |
105 | A.hasLeadingSpace() != B.hasLeadingSpace())) |
106 | return false; |
107 | |
108 | |
109 | if (A.getIdentifierInfo() || B.getIdentifierInfo()) { |
110 | if (A.getIdentifierInfo() == B.getIdentifierInfo()) |
111 | continue; |
112 | if (Lexically) |
113 | return false; |
114 | |
115 | |
116 | int AArgNum = getParameterNum(A.getIdentifierInfo()); |
117 | if (AArgNum == -1) |
118 | return false; |
119 | if (AArgNum != Other.getParameterNum(B.getIdentifierInfo())) |
120 | return false; |
121 | continue; |
122 | } |
123 | |
124 | |
125 | if (PP.getSpelling(A) != PP.getSpelling(B)) |
126 | return false; |
127 | } |
128 | |
129 | return true; |
130 | } |
131 | |
132 | LLVM_DUMP_METHOD void MacroInfo::dump() const { |
133 | llvm::raw_ostream &Out = llvm::errs(); |
134 | |
135 | |
136 | Out << "MacroInfo " << this; |
137 | if (IsBuiltinMacro) Out << " builtin"; |
138 | if (IsDisabled) Out << " disabled"; |
139 | if (IsUsed) Out << " used"; |
140 | if (IsAllowRedefinitionsWithoutWarning) |
141 | Out << " allow_redefinitions_without_warning"; |
142 | if (IsWarnIfUnused) Out << " warn_if_unused"; |
143 | if (UsedForHeaderGuard) Out << " header_guard"; |
144 | |
145 | Out << "\n #define <macro>"; |
146 | if (IsFunctionLike) { |
147 | Out << "("; |
148 | for (unsigned I = 0; I != NumParameters; ++I) { |
149 | if (I) Out << ", "; |
150 | Out << ParameterList[I]->getName(); |
151 | } |
152 | if (IsC99Varargs || IsGNUVarargs) { |
153 | if (NumParameters && IsC99Varargs) Out << ", "; |
154 | Out << "..."; |
155 | } |
156 | Out << ")"; |
157 | } |
158 | |
159 | bool First = true; |
160 | for (const Token &Tok : ReplacementTokens) { |
161 | |
162 | |
163 | if (First || Tok.hasLeadingSpace()) |
164 | Out << " "; |
165 | First = false; |
166 | |
167 | if (const char *Punc = tok::getPunctuatorSpelling(Tok.getKind())) |
168 | Out << Punc; |
169 | else if (Tok.isLiteral() && Tok.getLiteralData()) |
170 | Out << StringRef(Tok.getLiteralData(), Tok.getLength()); |
171 | else if (auto *II = Tok.getIdentifierInfo()) |
172 | Out << II->getName(); |
173 | else |
174 | Out << Tok.getName(); |
175 | } |
176 | } |
177 | |
178 | MacroDirective::DefInfo MacroDirective::getDefinition() { |
179 | MacroDirective *MD = this; |
180 | SourceLocation UndefLoc; |
181 | Optional<bool> isPublic; |
182 | for (; MD; MD = MD->getPrevious()) { |
183 | if (DefMacroDirective *DefMD = dyn_cast<DefMacroDirective>(MD)) |
184 | return DefInfo(DefMD, UndefLoc, |
185 | !isPublic.hasValue() || isPublic.getValue()); |
186 | |
187 | if (UndefMacroDirective *UndefMD = dyn_cast<UndefMacroDirective>(MD)) { |
188 | UndefLoc = UndefMD->getLocation(); |
189 | continue; |
190 | } |
191 | |
192 | VisibilityMacroDirective *VisMD = cast<VisibilityMacroDirective>(MD); |
193 | if (!isPublic.hasValue()) |
194 | isPublic = VisMD->isPublic(); |
195 | } |
196 | |
197 | return DefInfo(nullptr, UndefLoc, |
198 | !isPublic.hasValue() || isPublic.getValue()); |
199 | } |
200 | |
201 | const MacroDirective::DefInfo |
202 | MacroDirective::findDirectiveAtLoc(SourceLocation L, |
203 | const SourceManager &SM) const { |
204 | (0) . __assert_fail ("L.isValid() && \"SourceLocation is invalid.\"", "/home/seafit/code_projects/clang_source/clang/lib/Lex/MacroInfo.cpp", 204, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(L.isValid() && "SourceLocation is invalid."); |
205 | for (DefInfo Def = getDefinition(); Def; Def = Def.getPreviousDefinition()) { |
206 | if (Def.getLocation().isInvalid() || |
207 | SM.isBeforeInTranslationUnit(Def.getLocation(), L)) |
208 | return (!Def.isUndefined() || |
209 | SM.isBeforeInTranslationUnit(L, Def.getUndefLocation())) |
210 | ? Def : DefInfo(); |
211 | } |
212 | return DefInfo(); |
213 | } |
214 | |
215 | LLVM_DUMP_METHOD void MacroDirective::dump() const { |
216 | llvm::raw_ostream &Out = llvm::errs(); |
217 | |
218 | switch (getKind()) { |
219 | case MD_Define: Out << "DefMacroDirective"; break; |
220 | case MD_Undefine: Out << "UndefMacroDirective"; break; |
221 | case MD_Visibility: Out << "VisibilityMacroDirective"; break; |
222 | } |
223 | Out << " " << this; |
224 | |
225 | if (auto *Prev = getPrevious()) |
226 | Out << " prev " << Prev; |
227 | if (IsFromPCH) Out << " from_pch"; |
228 | |
229 | if (isa<VisibilityMacroDirective>(this)) |
230 | Out << (IsPublic ? " public" : " private"); |
231 | |
232 | if (auto *DMD = dyn_cast<DefMacroDirective>(this)) { |
233 | if (auto *Info = DMD->getInfo()) { |
234 | Out << "\n "; |
235 | Info->dump(); |
236 | } |
237 | } |
238 | Out << "\n"; |
239 | } |
240 | |
241 | ModuleMacro *ModuleMacro::create(Preprocessor &PP, Module *OwningModule, |
242 | IdentifierInfo *II, MacroInfo *Macro, |
243 | ArrayRef<ModuleMacro *> Overrides) { |
244 | void *Mem = PP.getPreprocessorAllocator().Allocate( |
245 | sizeof(ModuleMacro) + sizeof(ModuleMacro *) * Overrides.size(), |
246 | alignof(ModuleMacro)); |
247 | return new (Mem) ModuleMacro(OwningModule, II, Macro, Overrides); |
248 | } |
249 | |