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//===--------- SARIFDiagnostic.cpp - SARIF Diagnostic Formatting ----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/SARIFDiagnostic.h"
#include "clang/Basic/CharInfo.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/Sarif.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/Locale.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <string>
namespace clang {
SARIFDiagnostic::SARIFDiagnostic(raw_ostream &OS, const LangOptions &LangOpts,
DiagnosticOptions *DiagOpts,
SarifDocumentWriter *Writer)
: DiagnosticRenderer(LangOpts, DiagOpts), Writer(Writer) {}
// FIXME(llvm-project/issues/57323): Refactor Diagnostic classes.
void SARIFDiagnostic::emitDiagnosticMessage(
FullSourceLoc Loc, PresumedLoc PLoc, DiagnosticsEngine::Level Level,
StringRef Message, ArrayRef<clang::CharSourceRange> Ranges,
DiagOrStoredDiag D) {
const auto *Diag = D.dyn_cast<const Diagnostic *>();
if (!Diag)
return;
SarifRule Rule = SarifRule::create().setRuleId(std::to_string(Diag->getID()));
Rule = addDiagnosticLevelToRule(Rule, Level);
unsigned RuleIdx = Writer->createRule(Rule);
SarifResult Result =
SarifResult::create(RuleIdx).setDiagnosticMessage(Message);
if (Loc.isValid())
Result = addLocationToResult(Result, Loc, PLoc, Ranges, *Diag);
Writer->appendResult(Result);
}
SarifResult SARIFDiagnostic::addLocationToResult(
SarifResult Result, FullSourceLoc Loc, PresumedLoc PLoc,
ArrayRef<CharSourceRange> Ranges, const Diagnostic &Diag) {
SmallVector<CharSourceRange> Locations = {};
if (PLoc.isInvalid()) {
// At least add the file name if available:
FileID FID = Loc.getFileID();
if (FID.isValid()) {
if (const FileEntry *FE = Loc.getFileEntry()) {
emitFilename(FE->getName(), Loc.getManager());
// FIXME(llvm-project/issues/57366): File-only locations
}
}
return Result;
}
FileID CaretFileID = Loc.getExpansionLoc().getFileID();
for (const CharSourceRange Range : Ranges) {
// Ignore invalid ranges.
if (Range.isInvalid())
continue;
auto &SM = Loc.getManager();
SourceLocation B = SM.getExpansionLoc(Range.getBegin());
CharSourceRange ERange = SM.getExpansionRange(Range.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);
SourceLocation BeginLoc = SM.translateLineCol(
BF.getFileID(), BF.getLineNumber(), BF.getColumnNumber());
SourceLocation EndLoc = SM.translateLineCol(
EF.getFileID(), EF.getLineNumber(), EF.getColumnNumber() + TokSize);
Locations.push_back(
CharSourceRange{SourceRange{BeginLoc, EndLoc}, /* ITR = */ false});
// FIXME: Additional ranges should use presumed location in both
// Text and SARIF diagnostics.
}
auto &SM = Loc.getManager();
auto FID = PLoc.getFileID();
// Visual Studio 2010 or earlier expects column number to be off by one.
unsigned int ColNo = (LangOpts.MSCompatibilityVersion &&
!LangOpts.isCompatibleWithMSVC(LangOptions::MSVC2012))
? PLoc.getColumn() - 1
: PLoc.getColumn();
SourceLocation DiagLoc = SM.translateLineCol(FID, PLoc.getLine(), ColNo);
// FIXME(llvm-project/issues/57366): Properly process #line directives.
Locations.push_back(
CharSourceRange{SourceRange{DiagLoc, DiagLoc}, /* ITR = */ false});
return Result.setLocations(Locations);
}
SarifRule
SARIFDiagnostic::addDiagnosticLevelToRule(SarifRule Rule,
DiagnosticsEngine::Level Level) {
auto Config = SarifReportingConfiguration::create();
switch (Level) {
case DiagnosticsEngine::Note:
Config = Config.setLevel(SarifResultLevel::Note);
break;
case DiagnosticsEngine::Remark:
Config = Config.setLevel(SarifResultLevel::None);
break;
case DiagnosticsEngine::Warning:
Config = Config.setLevel(SarifResultLevel::Warning);
break;
case DiagnosticsEngine::Error:
Config = Config.setLevel(SarifResultLevel::Error).setRank(50);
break;
case DiagnosticsEngine::Fatal:
Config = Config.setLevel(SarifResultLevel::Error).setRank(100);
break;
case DiagnosticsEngine::Ignored:
assert(false && "Invalid diagnostic type");
}
return Rule.setDefaultConfiguration(Config);
}
llvm::StringRef SARIFDiagnostic::emitFilename(StringRef Filename,
const SourceManager &SM) {
if (DiagOpts->AbsolutePath) {
llvm::ErrorOr<const FileEntry *> File =
SM.getFileManager().getFile(Filename);
if (File) {
// We want to print a simplified absolute path, i. e. without "dots".
//
// The hardest part here are the paths like "<part1>/<link>/../<part2>".
// On Unix-like systems, we cannot just collapse "<link>/..", because
// paths are resolved sequentially, and, thereby, the path
// "<part1>/<part2>" may point to a different location. That is why
// we use FileManager::getCanonicalName(), which expands all indirections
// with llvm::sys::fs::real_path() and caches the result.
//
// On the other hand, it would be better to preserve as much of the
// original path as possible, because that helps a user to recognize it.
// real_path() expands all links, which is sometimes too much. Luckily,
// on Windows we can just use llvm::sys::path::remove_dots(), because,
// on that system, both aforementioned paths point to the same place.
#ifdef _WIN32
SmallString<256> TmpFilename = (*File)->getName();
llvm::sys::fs::make_absolute(TmpFilename);
llvm::sys::path::native(TmpFilename);
llvm::sys::path::remove_dots(TmpFilename, /* remove_dot_dot */ true);
Filename = StringRef(TmpFilename.data(), TmpFilename.size());
#else
Filename = SM.getFileManager().getCanonicalName(*File);
#endif
}
}
return Filename;
}
/// 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 SARIFDiagnostic::emitDiagnosticLoc(FullSourceLoc Loc, PresumedLoc PLoc,
DiagnosticsEngine::Level Level,
ArrayRef<CharSourceRange> Ranges) {
assert(false && "Not implemented in SARIF mode");
}
void SARIFDiagnostic::emitIncludeLocation(FullSourceLoc Loc, PresumedLoc PLoc) {
assert(false && "Not implemented in SARIF mode");
}
void SARIFDiagnostic::emitImportLocation(FullSourceLoc Loc, PresumedLoc PLoc,
StringRef ModuleName) {
assert(false && "Not implemented in SARIF mode");
}
void SARIFDiagnostic::emitBuildingModuleLocation(FullSourceLoc Loc,
PresumedLoc PLoc,
StringRef ModuleName) {
assert(false && "Not implemented in SARIF mode");
}
} // namespace clang
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