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