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-rw-r--r--tools/llvm-cov/GCOVReader.cpp281
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diff --git a/tools/llvm-cov/GCOVReader.cpp b/tools/llvm-cov/GCOVReader.cpp
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-//===- tools/llvm-cov/GCOVReader.cpp - LLVM coverage tool -----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// GCOVReader implements the interface to read coverage files that use 'gcov'
-// format.
-//
-//===----------------------------------------------------------------------===//
-
-#include "GCOVReader.h"
-#include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/Support/MemoryObject.h"
-#include "llvm/Support/system_error.h"
-using namespace llvm;
-
-//===----------------------------------------------------------------------===//
-// GCOVFile implementation.
-
-/// ~GCOVFile - Delete GCOVFile and its content.
-GCOVFile::~GCOVFile() {
- DeleteContainerPointers(Functions);
-}
-
-/// isGCDAFile - Return true if Format identifies a .gcda file.
-static bool isGCDAFile(GCOVFormat Format) {
- return Format == GCDA_402 || Format == GCDA_404;
-}
-
-/// isGCNOFile - Return true if Format identifies a .gcno file.
-static bool isGCNOFile(GCOVFormat Format) {
- return Format == GCNO_402 || Format == GCNO_404;
-}
-
-/// read - Read GCOV buffer.
-bool GCOVFile::read(GCOVBuffer &Buffer) {
- GCOVFormat Format = Buffer.readGCOVFormat();
- if (Format == InvalidGCOV)
- return false;
-
- unsigned i = 0;
- while (1) {
- GCOVFunction *GFun = NULL;
- if (isGCDAFile(Format)) {
- // Use existing function while reading .gcda file.
- assert (i < Functions.size() && ".gcda data does not match .gcno data");
- GFun = Functions[i];
- } else if (isGCNOFile(Format)){
- GFun = new GCOVFunction();
- Functions.push_back(GFun);
- }
- if (!GFun || !GFun->read(Buffer, Format))
- break;
- ++i;
- }
- return true;
-}
-
-/// dump - Dump GCOVFile content on standard out for debugging purposes.
-void GCOVFile::dump() {
- for (SmallVector<GCOVFunction *, 16>::iterator I = Functions.begin(),
- E = Functions.end(); I != E; ++I)
- (*I)->dump();
-}
-
-/// collectLineCounts - Collect line counts. This must be used after
-/// reading .gcno and .gcda files.
-void GCOVFile::collectLineCounts(FileInfo &FI) {
- for (SmallVector<GCOVFunction *, 16>::iterator I = Functions.begin(),
- E = Functions.end(); I != E; ++I)
- (*I)->collectLineCounts(FI);
- FI.print();
-}
-
-//===----------------------------------------------------------------------===//
-// GCOVFunction implementation.
-
-/// ~GCOVFunction - Delete GCOVFunction and its content.
-GCOVFunction::~GCOVFunction() {
- DeleteContainerPointers(Blocks);
-}
-
-/// read - Read a aunction from the buffer. Return false if buffer cursor
-/// does not point to a function tag.
-bool GCOVFunction::read(GCOVBuffer &Buff, GCOVFormat Format) {
- if (!Buff.readFunctionTag())
- return false;
-
- Buff.readInt(); // Function header length
- Ident = Buff.readInt();
- Buff.readInt(); // Checksum #1
- if (Format != GCNO_402)
- Buff.readInt(); // Checksum #2
-
- Name = Buff.readString();
- if (Format == GCNO_402 || Format == GCNO_404)
- Filename = Buff.readString();
-
- if (Format == GCDA_402 || Format == GCDA_404) {
- Buff.readArcTag();
- uint32_t Count = Buff.readInt() / 2;
- for (unsigned i = 0, e = Count; i != e; ++i) {
- Blocks[i]->addCount(Buff.readInt64());
- }
- return true;;
- }
-
- LineNumber = Buff.readInt();
-
- // read blocks.
- assert (Buff.readBlockTag() && "Block Tag not found!");
- uint32_t BlockCount = Buff.readInt();
- for (int i = 0, e = BlockCount; i != e; ++i) {
- Buff.readInt(); // Block flags;
- Blocks.push_back(new GCOVBlock(i));
- }
-
- // read edges.
- while (Buff.readEdgeTag()) {
- uint32_t EdgeCount = (Buff.readInt() - 1) / 2;
- uint32_t BlockNo = Buff.readInt();
- assert (BlockNo < BlockCount && "Unexpected Block number!");
- for (int i = 0, e = EdgeCount; i != e; ++i) {
- Blocks[BlockNo]->addEdge(Buff.readInt());
- Buff.readInt(); // Edge flag
- }
- }
-
- // read line table.
- while (Buff.readLineTag()) {
- uint32_t LineTableLength = Buff.readInt();
- uint32_t Size = Buff.getCursor() + LineTableLength*4;
- uint32_t BlockNo = Buff.readInt();
- assert (BlockNo < BlockCount && "Unexpected Block number!");
- GCOVBlock *Block = Blocks[BlockNo];
- Buff.readInt(); // flag
- while (Buff.getCursor() != (Size - 4)) {
- StringRef Filename = Buff.readString();
- if (Buff.getCursor() == (Size - 4)) break;
- while (uint32_t L = Buff.readInt())
- Block->addLine(Filename, L);
- }
- Buff.readInt(); // flag
- }
- return true;
-}
-
-/// dump - Dump GCOVFunction content on standard out for debugging purposes.
-void GCOVFunction::dump() {
- outs() << "===== " << Name << " @ " << Filename << ":" << LineNumber << "\n";
- for (SmallVector<GCOVBlock *, 16>::iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I)
- (*I)->dump();
-}
-
-/// collectLineCounts - Collect line counts. This must be used after
-/// reading .gcno and .gcda files.
-void GCOVFunction::collectLineCounts(FileInfo &FI) {
- for (SmallVector<GCOVBlock *, 16>::iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I)
- (*I)->collectLineCounts(FI);
-}
-
-//===----------------------------------------------------------------------===//
-// GCOVBlock implementation.
-
-/// ~GCOVBlock - Delete GCOVBlock and its content.
-GCOVBlock::~GCOVBlock() {
- Edges.clear();
- DeleteContainerSeconds(Lines);
-}
-
-void GCOVBlock::addLine(StringRef Filename, uint32_t LineNo) {
- GCOVLines *&LinesForFile = Lines[Filename];
- if (!LinesForFile)
- LinesForFile = new GCOVLines();
- LinesForFile->add(LineNo);
-}
-
-/// collectLineCounts - Collect line counts. This must be used after
-/// reading .gcno and .gcda files.
-void GCOVBlock::collectLineCounts(FileInfo &FI) {
- for (StringMap<GCOVLines *>::iterator I = Lines.begin(),
- E = Lines.end(); I != E; ++I)
- I->second->collectLineCounts(FI, I->first(), Counter);
-}
-
-/// dump - Dump GCOVBlock content on standard out for debugging purposes.
-void GCOVBlock::dump() {
- outs() << "Block : " << Number << " Counter : " << Counter << "\n";
- if (!Edges.empty()) {
- outs() << "\tEdges : ";
- for (SmallVector<uint32_t, 16>::iterator I = Edges.begin(), E = Edges.end();
- I != E; ++I)
- outs() << (*I) << ",";
- outs() << "\n";
- }
- if (!Lines.empty()) {
- outs() << "\tLines : ";
- for (StringMap<GCOVLines *>::iterator LI = Lines.begin(),
- LE = Lines.end(); LI != LE; ++LI) {
- outs() << LI->first() << " -> ";
- LI->second->dump();
- outs() << "\n";
- }
- }
-}
-
-//===----------------------------------------------------------------------===//
-// GCOVLines implementation.
-
-/// collectLineCounts - Collect line counts. This must be used after
-/// reading .gcno and .gcda files.
-void GCOVLines::collectLineCounts(FileInfo &FI, StringRef Filename,
- uint32_t Count) {
- for (SmallVector<uint32_t, 16>::iterator I = Lines.begin(),
- E = Lines.end(); I != E; ++I)
- FI.addLineCount(Filename, *I, Count);
-}
-
-/// dump - Dump GCOVLines content on standard out for debugging purposes.
-void GCOVLines::dump() {
- for (SmallVector<uint32_t, 16>::iterator I = Lines.begin(),
- E = Lines.end(); I != E; ++I)
- outs() << (*I) << ",";
-}
-
-//===----------------------------------------------------------------------===//
-// FileInfo implementation.
-
-/// addLineCount - Add line count for the given line number in a file.
-void FileInfo::addLineCount(StringRef Filename, uint32_t Line, uint32_t Count) {
- if (LineInfo.find(Filename) == LineInfo.end()) {
- OwningPtr<MemoryBuffer> Buff;
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
- errs() << Filename << ": " << ec.message() << "\n";
- return;
- }
- StringRef AllLines = Buff.take()->getBuffer();
- LineCounts L(AllLines.count('\n')+2);
- L[Line-1] = Count;
- LineInfo[Filename] = L;
- return;
- }
- LineCounts &L = LineInfo[Filename];
- L[Line-1] = Count;
-}
-
-/// print - Print source files with collected line count information.
-void FileInfo::print() {
- for (StringMap<LineCounts>::iterator I = LineInfo.begin(), E = LineInfo.end();
- I != E; ++I) {
- StringRef Filename = I->first();
- outs() << Filename << "\n";
- LineCounts &L = LineInfo[Filename];
- OwningPtr<MemoryBuffer> Buff;
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
- errs() << Filename << ": " << ec.message() << "\n";
- return;
- }
- StringRef AllLines = Buff.take()->getBuffer();
- for (unsigned i = 0, e = L.size(); i != e; ++i) {
- if (L[i])
- outs() << L[i] << ":\t";
- else
- outs() << " :\t";
- std::pair<StringRef, StringRef> P = AllLines.split('\n');
- if (AllLines != P.first)
- outs() << P.first;
- outs() << "\n";
- AllLines = P.second;
- }
- }
-}
-
-
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