forked from OSchip/llvm-project
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
//===- CIndexInclusionStack.cpp - Clang-C Source Indexing Library ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a callback mechanism for clients to get the inclusion
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// stack from a translation unit.
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//
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//===----------------------------------------------------------------------===//
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#include "CIndexer.h"
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#include "CXSourceLocation.h"
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#include "CXTranslationUnit.h"
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#include "clang/AST/DeclVisitor.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace clang;
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extern "C" {
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void clang_getInclusions(CXTranslationUnit TU, CXInclusionVisitor CB,
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CXClientData clientData) {
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ASTUnit *CXXUnit = static_cast<ASTUnit *>(TU->TUData);
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SourceManager &SM = CXXUnit->getSourceManager();
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ASTContext &Ctx = CXXUnit->getASTContext();
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SmallVector<CXSourceLocation, 10> InclusionStack;
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unsigned n = SM.local_sloc_entry_size();
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// In the case where all the SLocEntries are in an external source, traverse
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// those SLocEntries as well. This is the case where we are looking
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// at the inclusion stack of an AST/PCH file.
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const SrcMgr::SLocEntry &(SourceManager::*Getter)(unsigned, bool*) const;
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if (n == 1) {
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Getter = &SourceManager::getLoadedSLocEntry;
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n = SM.loaded_sloc_entry_size();
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} else
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Getter = &SourceManager::getLocalSLocEntry;
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for (unsigned i = 0 ; i < n ; ++i) {
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bool Invalid = false;
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const SrcMgr::SLocEntry &SL = (SM.*Getter)(i, &Invalid);
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if (!SL.isFile() || Invalid)
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continue;
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const SrcMgr::FileInfo &FI = SL.getFile();
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if (!FI.getContentCache()->OrigEntry)
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continue;
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// Build the inclusion stack.
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SourceLocation L = FI.getIncludeLoc();
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InclusionStack.clear();
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while (L.isValid()) {
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PresumedLoc PLoc = SM.getPresumedLoc(L);
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InclusionStack.push_back(cxloc::translateSourceLocation(Ctx, L));
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L = PLoc.isValid()? PLoc.getIncludeLoc() : SourceLocation();
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}
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// Callback to the client.
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// FIXME: We should have a function to construct CXFiles.
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CB((CXFile) FI.getContentCache()->OrigEntry,
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InclusionStack.data(), InclusionStack.size(), clientData);
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}
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}
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} // end extern C
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