clang 19.0.0git
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
11#include "clang/Lex/Lexer.h"
12
13namespace clang {
14namespace data_collection {
15
16/// Prints the macro name that contains the given SourceLocation into the given
17/// raw_string_ostream.
18static void printMacroName(llvm::raw_string_ostream &MacroStack,
19 ASTContext &Context, SourceLocation Loc) {
20 MacroStack << Lexer::getImmediateMacroName(Loc, Context.getSourceManager(),
21 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 MacroStack << " ";
26}
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.
34 std::string MacroStack;
35 llvm::raw_string_ostream MacroStackStream(MacroStack);
36 SourceManager &SM = Context.getSourceManager();
37
38 // Iterate over all macros that expanded into the given SourceLocation.
39 while (Loc.isMacroID()) {
40 // Add the macro name to the stream.
41 printMacroName(MacroStackStream, Context, Loc);
42 Loc = SM.getImmediateMacroCallerLoc(Loc);
43 }
44 MacroStackStream.flush();
45 return MacroStack;
46}
47
48} // end namespace data_collection
49} // end namespace clang
#define SM(sm)
Definition: Cuda.cpp:83
This file declares helper methods for collecting data from AST nodes.
SourceLocation Loc
Definition: SemaObjC.cpp:755
Defines the SourceManager interface.
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:185
static StringRef getImmediateMacroName(SourceLocation Loc, const SourceManager &SM, const LangOptions &LangOpts)
Retrieve the name of the immediate macro expansion.
Definition: Lexer.cpp:1060
Encodes a location in the source.
This class handles loading and caching of source files into memory.
static void printMacroName(llvm::raw_string_ostream &MacroStack, ASTContext &Context, SourceLocation Loc)
Prints the macro name that contains the given SourceLocation into the given raw_string_ostream.
std::string getMacroStack(SourceLocation Loc, ASTContext &Context)
Returns a string that represents all macro expansions that expanded into the given SourceLocation.
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