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//===--- LogDiagnosticPrinter.cpp - Log Diagnostic Printer ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/LogDiagnosticPrinter.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang;
LogDiagnosticPrinter::LogDiagnosticPrinter(raw_ostream &os,
const DiagnosticOptions &diags,
bool _OwnsOutputStream)
: OS(os), LangOpts(0), DiagOpts(&diags),
OwnsOutputStream(_OwnsOutputStream) {
}
LogDiagnosticPrinter::~LogDiagnosticPrinter() {
if (OwnsOutputStream)
delete &OS;
}
static StringRef getLevelName(DiagnosticsEngine::Level Level) {
switch (Level) {
case DiagnosticsEngine::Ignored: return "ignored";
case DiagnosticsEngine::Note: return "note";
case DiagnosticsEngine::Warning: return "warning";
case DiagnosticsEngine::Error: return "error";
case DiagnosticsEngine::Fatal: return "fatal error";
}
llvm_unreachable("Invalid DiagnosticsEngine level!");
}
// Escape XML characters inside the raw string.
static void emitString(llvm::raw_svector_ostream &OS, const StringRef Raw) {
for (StringRef::iterator I = Raw.begin(), E = Raw.end(); I != E; ++I) {
char c = *I;
switch (c) {
default: OS << c; break;
case '&': OS << "&"; break;
case '<': OS << "<"; break;
case '>': OS << ">"; break;
case '\'': OS << "'"; break;
case '\"': OS << """; break;
}
}
}
void LogDiagnosticPrinter::EndSourceFile() {
// We emit all the diagnostics in EndSourceFile. However, we don't emit any
// entry if no diagnostics were present.
//
// Note that DiagnosticConsumer has no "end-of-compilation" callback, so we
// will miss any diagnostics which are emitted after and outside the
// translation unit processing.
if (Entries.empty())
return;
// Write to a temporary string to ensure atomic write of diagnostic object.
SmallString<512> Msg;
llvm::raw_svector_ostream OS(Msg);
OS << "<dict>\n";
if (!MainFilename.empty()) {
OS << " <key>main-file</key>\n"
<< " <string>";
emitString(OS, MainFilename);
OS << "</string>\n";
}
if (!DwarfDebugFlags.empty()) {
OS << " <key>dwarf-debug-flags</key>\n"
<< " <string>";
emitString(OS, DwarfDebugFlags);
OS << "</string>\n";
}
OS << " <key>diagnostics</key>\n";
OS << " <array>\n";
for (unsigned i = 0, e = Entries.size(); i != e; ++i) {
DiagEntry &DE = Entries[i];
OS << " <dict>\n";
OS << " <key>level</key>\n"
<< " <string>";
emitString(OS, getLevelName(DE.DiagnosticLevel));
OS << "</string>\n";
if (!DE.Filename.empty()) {
OS << " <key>filename</key>\n"
<< " <string>";
emitString(OS, DE.Filename);
OS << "</string>\n";
}
if (DE.Line != 0) {
OS << " <key>line</key>\n"
<< " <integer>" << DE.Line << "</integer>\n";
}
if (DE.Column != 0) {
OS << " <key>column</key>\n"
<< " <integer>" << DE.Column << "</integer>\n";
}
if (!DE.Message.empty()) {
OS << " <key>message</key>\n"
<< " <string>";
emitString(OS, DE.Message);
OS << "</string>\n";
}
OS << " </dict>\n";
}
OS << " </array>\n";
OS << "</dict>\n";
this->OS << OS.str();
}
void LogDiagnosticPrinter::HandleDiagnostic(DiagnosticsEngine::Level Level,
const Diagnostic &Info) {
// Default implementation (Warnings/errors count).
DiagnosticConsumer::HandleDiagnostic(Level, Info);
// Initialize the main file name, if we haven't already fetched it.
if (MainFilename.empty() && Info.hasSourceManager()) {
const SourceManager &SM = Info.getSourceManager();
FileID FID = SM.getMainFileID();
if (!FID.isInvalid()) {
const FileEntry *FE = SM.getFileEntryForID(FID);
if (FE && FE->getName())
MainFilename = FE->getName();
}
}
// Create the diag entry.
DiagEntry DE;
DE.DiagnosticID = Info.getID();
DE.DiagnosticLevel = Level;
// Format the message.
SmallString<100> MessageStr;
Info.FormatDiagnostic(MessageStr);
DE.Message = MessageStr.str();
// Set the location information.
DE.Filename = "";
DE.Line = DE.Column = 0;
if (Info.getLocation().isValid() && Info.hasSourceManager()) {
const SourceManager &SM = Info.getSourceManager();
PresumedLoc PLoc = SM.getPresumedLoc(Info.getLocation());
if (PLoc.isInvalid()) {
// At least print the file name if available:
FileID FID = SM.getFileID(Info.getLocation());
if (!FID.isInvalid()) {
const FileEntry *FE = SM.getFileEntryForID(FID);
if (FE && FE->getName())
DE.Filename = FE->getName();
}
} else {
DE.Filename = PLoc.getFilename();
DE.Line = PLoc.getLine();
DE.Column = PLoc.getColumn();
}
}
// Record the diagnostic entry.
Entries.push_back(DE);
}
DiagnosticConsumer *
LogDiagnosticPrinter::clone(DiagnosticsEngine &Diags) const {
return new LogDiagnosticPrinter(OS, *DiagOpts, /*OwnsOutputStream=*/false);
}
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