///get the source code of stmt
StringRef FindPatternVisitor::expr2str(Stmt *s){
if(!s)
return "";
FullSourceLoc begin = CI->getASTContext().getFullLoc(s->getLocStart());
FullSourceLoc end = CI->getASTContext().getFullLoc(s->getLocEnd());
if(begin.isInvalid() || end.isInvalid())
return "";
SourceRange sr(begin.getExpansionLoc(), end.getExpansionLoc());
return Lexer::getSourceText(CharSourceRange::getTokenRange(sr), CI->getSourceManager(), LangOptions(), 0);
}
bool FindPatternVisitor::VisitFunctionDecl (FunctionDecl* Declaration){
if(!Declaration)
return true;
if(!(Declaration->isThisDeclarationADefinition() && Declaration->hasBody()))
return true;
FullSourceLoc FullLocation = CI->getASTContext().getFullLoc(Declaration->getLocStart());
if(!FullLocation.isValid())
return true;
///the function is located in head file
if(FullLocation.getExpansionLoc().getFileID() != CI->getSourceManager().getMainFileID())
return true;
//llvm::errs()<<"Found function "<<Declaration->getQualifiedNameAsString() ;
//llvm::errs()<<" @ " << FullLocation.printToString(FullLocation.getManager()) <<"\n";
hasRecorded.clear();
if(Stmt* function = Declaration->getBody()){
travelStmt(function, function);
}
return true;
}
void HTMLDiagnostics::HandlePiece(Rewriter& R, FileID BugFileID,
const PathDiagnosticPiece& P,
unsigned num, unsigned max) {
// For now, just draw a box above the line in question, and emit the
// warning.
FullSourceLoc Pos = P.getLocation().asLocation();
if (!Pos.isValid())
return;
SourceManager &SM = R.getSourceMgr();
assert(&Pos.getManager() == &SM && "SourceManagers are different!");
std::pair<FileID, unsigned> LPosInfo = SM.getDecomposedExpansionLoc(Pos);
if (LPosInfo.first != BugFileID)
return;
const llvm::MemoryBuffer *Buf = SM.getBuffer(LPosInfo.first);
const char* FileStart = Buf->getBufferStart();
// Compute the column number. Rewind from the current position to the start
// of the line.
unsigned ColNo = SM.getColumnNumber(LPosInfo.first, LPosInfo.second);
const char *TokInstantiationPtr =Pos.getExpansionLoc().getCharacterData();
const char *LineStart = TokInstantiationPtr-ColNo;
// Compute LineEnd.
const char *LineEnd = TokInstantiationPtr;
const char* FileEnd = Buf->getBufferEnd();
while (*LineEnd != '\n' && LineEnd != FileEnd)
++LineEnd;
// Compute the margin offset by counting tabs and non-tabs.
unsigned PosNo = 0;
for (const char* c = LineStart; c != TokInstantiationPtr; ++c)
PosNo += *c == '\t' ? 8 : 1;
// Create the html for the message.
const char *Kind = 0;
switch (P.getKind()) {
case PathDiagnosticPiece::Call:
llvm_unreachable("Calls should already be handled");
case PathDiagnosticPiece::Event: Kind = "Event"; break;
case PathDiagnosticPiece::ControlFlow: Kind = "Control"; break;
// Setting Kind to "Control" is intentional.
case PathDiagnosticPiece::Macro: Kind = "Control"; break;
}
std::string sbuf;
llvm::raw_string_ostream os(sbuf);
os << "\n<tr><td class=\"num\"></td><td class=\"line\"><div id=\"";
if (num == max)
os << "EndPath";
else
os << "Path" << num;
os << "\" class=\"msg";
if (Kind)
os << " msg" << Kind;
os << "\" style=\"margin-left:" << PosNo << "ex";
// Output a maximum size.
if (!isa<PathDiagnosticMacroPiece>(P)) {
// Get the string and determining its maximum substring.
const std::string& Msg = P.getString();
unsigned max_token = 0;
unsigned cnt = 0;
unsigned len = Msg.size();
for (std::string::const_iterator I=Msg.begin(), E=Msg.end(); I!=E; ++I)
switch (*I) {
default:
++cnt;
continue;
case ' ':
case '\t':
case '\n':
if (cnt > max_token) max_token = cnt;
cnt = 0;
}
if (cnt > max_token)
max_token = cnt;
// Determine the approximate size of the message bubble in em.
unsigned em;
const unsigned max_line = 120;
if (max_token >= max_line)
em = max_token / 2;
else {
unsigned characters = max_line;
unsigned lines = len / max_line;
if (lines > 0) {
for (; characters > max_token; --characters)
if (len / characters > lines) {
++characters;
break;
}
}
em = characters / 2;
}
if (em < max_line/2)
os << "; max-width:" << em << "em";
}
else
os << "; max-width:100em";
os << "\">";
if (max > 1) {
os << "<table class=\"msgT\"><tr><td valign=\"top\">";
os << "<div class=\"PathIndex";
if (Kind) os << " PathIndex" << Kind;
os << "\">" << num << "</div>";
if (num > 1) {
os << "</td><td><div class=\"PathNav\"><a href=\"#Path"
<< (num - 1)
<< "\" title=\"Previous event ("
<< (num - 1)
<< ")\">←</a></div></td>";
}
os << "</td><td>";
}
if (const PathDiagnosticMacroPiece *MP =
dyn_cast<PathDiagnosticMacroPiece>(&P)) {
os << "Within the expansion of the macro '";
// Get the name of the macro by relexing it.
{
FullSourceLoc L = MP->getLocation().asLocation().getExpansionLoc();
assert(L.isFileID());
StringRef BufferInfo = L.getBufferData();
std::pair<FileID, unsigned> LocInfo = L.getDecomposedLoc();
const char* MacroName = LocInfo.second + BufferInfo.data();
Lexer rawLexer(SM.getLocForStartOfFile(LocInfo.first), PP.getLangOpts(),
BufferInfo.begin(), MacroName, BufferInfo.end());
Token TheTok;
rawLexer.LexFromRawLexer(TheTok);
for (unsigned i = 0, n = TheTok.getLength(); i < n; ++i)
os << MacroName[i];
}
os << "':\n";
if (max > 1) {
os << "</td>";
if (num < max) {
os << "<td><div class=\"PathNav\"><a href=\"#";
if (num == max - 1)
os << "EndPath";
else
os << "Path" << (num + 1);
os << "\" title=\"Next event ("
<< (num + 1)
<< ")\">→</a></div></td>";
}
os << "</tr></table>";
}
// Within a macro piece. Write out each event.
ProcessMacroPiece(os, *MP, 0);
}
else {
os << html::EscapeText(P.getString());
if (max > 1) {
os << "</td>";
if (num < max) {
os << "<td><div class=\"PathNav\"><a href=\"#";
if (num == max - 1)
os << "EndPath";
else
os << "Path" << (num + 1);
os << "\" title=\"Next event ("
<< (num + 1)
<< ")\">→</a></div></td>";
}
os << "</tr></table>";
}
}
os << "</div></td></tr>";
// Insert the new html.
unsigned DisplayPos = LineEnd - FileStart;
SourceLocation Loc =
SM.getLocForStartOfFile(LPosInfo.first).getLocWithOffset(DisplayPos);
R.InsertTextBefore(Loc, os.str());
// Now highlight the ranges.
ArrayRef<SourceRange> Ranges = P.getRanges();
for (ArrayRef<SourceRange>::iterator I = Ranges.begin(),
E = Ranges.end(); I != E; ++I) {
HighlightRange(R, LPosInfo.first, *I);
}
}
/// Print out the file/line/column information and include trace.
///
/// This method handlen the emission of the diagnostic location information.
/// This includes extracting as much location information as is present for
/// the diagnostic and printing it, as well as any include stack or source
/// ranges necessary.
void TextDiagnostic::emitDiagnosticLoc(FullSourceLoc Loc, PresumedLoc PLoc,
DiagnosticsEngine::Level Level,
ArrayRef<CharSourceRange> Ranges) {
if (PLoc.isInvalid()) {
// At least print the file name if available:
FileID FID = Loc.getFileID();
if (FID.isValid()) {
const FileEntry *FE = Loc.getFileEntry();
if (FE && FE->isValid()) {
emitFilename(FE->getName(), Loc.getManager());
if (FE->isInPCH())
OS << " (in PCH)";
OS << ": ";
}
}
return;
}
unsigned LineNo = PLoc.getLine();
if (!DiagOpts->ShowLocation)
return;
if (DiagOpts->ShowColors)
OS.changeColor(savedColor, true);
emitFilename(PLoc.getFilename(), Loc.getManager());
switch (DiagOpts->getFormat()) {
case DiagnosticOptions::Clang: OS << ':' << LineNo; break;
case DiagnosticOptions::MSVC: OS << '(' << LineNo; break;
case DiagnosticOptions::Vi: OS << " +" << LineNo; break;
}
if (DiagOpts->ShowColumn)
// Compute the column number.
if (unsigned ColNo = PLoc.getColumn()) {
if (DiagOpts->getFormat() == DiagnosticOptions::MSVC) {
OS << ',';
// Visual Studio 2010 or earlier expects column number to be off by one
if (LangOpts.MSCompatibilityVersion &&
!LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2012))
ColNo--;
} else
OS << ':';
OS << ColNo;
}
switch (DiagOpts->getFormat()) {
case DiagnosticOptions::Clang:
case DiagnosticOptions::Vi: OS << ':'; break;
case DiagnosticOptions::MSVC:
// MSVC2013 and before print 'file(4) : error'. MSVC2015 gets rid of the
// space and prints 'file(4): error'.
OS << ')';
if (LangOpts.MSCompatibilityVersion &&
!LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2015))
OS << ' ';
OS << ": ";
break;
}
if (DiagOpts->ShowSourceRanges && !Ranges.empty()) {
FileID CaretFileID = Loc.getExpansionLoc().getFileID();
bool PrintedRange = false;
for (ArrayRef<CharSourceRange>::const_iterator RI = Ranges.begin(),
RE = Ranges.end();
RI != RE; ++RI) {
// Ignore invalid ranges.
if (!RI->isValid()) continue;
auto &SM = Loc.getManager();
SourceLocation B = SM.getExpansionLoc(RI->getBegin());
CharSourceRange ERange = SM.getExpansionRange(RI->getEnd());
SourceLocation E = ERange.getEnd();
bool IsTokenRange = ERange.isTokenRange();
std::pair<FileID, unsigned> BInfo = SM.getDecomposedLoc(B);
std::pair<FileID, unsigned> EInfo = SM.getDecomposedLoc(E);
// If the start or end of the range is in another file, just discard
// it.
if (BInfo.first != CaretFileID || EInfo.first != CaretFileID)
continue;
// Add in the length of the token, so that we cover multi-char
// tokens.
unsigned TokSize = 0;
if (IsTokenRange)
TokSize = Lexer::MeasureTokenLength(E, SM, LangOpts);
FullSourceLoc BF(B, SM), EF(E, SM);
OS << '{'
<< BF.getLineNumber() << ':' << BF.getColumnNumber() << '-'
<< EF.getLineNumber() << ':' << (EF.getColumnNumber() + TokSize)
<< '}';
PrintedRange = true;
}
if (PrintedRange)
OS << ':';
}
OS << ' ';
}