/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/AST/DataCollection.cpp
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1 | | //===-- DataCollection.cpp --------------------------------------*- 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 | | #include "clang/AST/DataCollection.h" |
10 | | #include "clang/Basic/SourceManager.h" |
11 | | #include "clang/Lex/Lexer.h" |
12 | | |
13 | | namespace clang { |
14 | | namespace data_collection { |
15 | | |
16 | | /// Prints the macro name that contains the given SourceLocation into the given |
17 | | /// raw_string_ostream. |
18 | | static void printMacroName(llvm::raw_string_ostream &MacroStack, |
19 | 6.16k | ASTContext &Context, SourceLocation Loc) { |
20 | 6.16k | MacroStack << Lexer::getImmediateMacroName(Loc, Context.getSourceManager(), |
21 | 6.16k | Context.getLangOpts()); |
22 | | |
23 | | // Add an empty space at the end as a padding to prevent |
24 | | // that macro names concatenate to the names of other macros. |
25 | 6.16k | MacroStack << " "; |
26 | 6.16k | } |
27 | | |
28 | | /// Returns a string that represents all macro expansions that expanded into the |
29 | | /// given SourceLocation. |
30 | | /// |
31 | | /// If 'getMacroStack(A) == getMacroStack(B)' is true, then the SourceLocations |
32 | | /// A and B are expanded from the same macros in the same order. |
33 | 20.2k | std::string getMacroStack(SourceLocation Loc, ASTContext &Context) { |
34 | 20.2k | std::string MacroStack; |
35 | 20.2k | llvm::raw_string_ostream MacroStackStream(MacroStack); |
36 | 20.2k | SourceManager &SM = Context.getSourceManager(); |
37 | | |
38 | | // Iterate over all macros that expanded into the given SourceLocation. |
39 | 26.4k | while (Loc.isMacroID()) { |
40 | | // Add the macro name to the stream. |
41 | 6.16k | printMacroName(MacroStackStream, Context, Loc); |
42 | 6.16k | Loc = SM.getImmediateMacroCallerLoc(Loc); |
43 | 6.16k | } |
44 | 20.2k | MacroStackStream.flush(); |
45 | 20.2k | return MacroStack; |
46 | 20.2k | } |
47 | | |
48 | | } // end namespace data_collection |
49 | | } // end namespace clang |