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//===--- PathDiagnostic.cpp - Path-Specific Diagnostic Handling -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the PathDiagnostic-related interfaces.
//
//===----------------------------------------------------------------------===//
#include "clang/Analysis/PathDiagnostic.h"
#include "clang/AST/Expr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Casting.h"
#include <sstream>
using namespace clang;
using llvm::dyn_cast;
using llvm::isa;
bool PathDiagnosticMacroPiece::containsEvent() const {
for (const_iterator I = begin(), E = end(); I!=E; ++I) {
if (isa<PathDiagnosticEventPiece>(*I))
return true;
if (PathDiagnosticMacroPiece *MP = dyn_cast<PathDiagnosticMacroPiece>(*I))
if (MP->containsEvent())
return true;
}
return false;
}
static size_t GetNumCharsToLastNonPeriod(const char *s) {
const char *start = s;
const char *lastNonPeriod = 0;
for ( ; *s != '\0' ; ++s)
if (*s != '.') lastNonPeriod = s;
if (!lastNonPeriod)
return 0;
return (lastNonPeriod - start) + 1;
}
static inline size_t GetNumCharsToLastNonPeriod(const std::string &s) {
return s.empty () ? 0 : GetNumCharsToLastNonPeriod(&s[0]);
}
PathDiagnosticPiece::PathDiagnosticPiece(const std::string& s,
Kind k, DisplayHint hint)
: str(s, 0, GetNumCharsToLastNonPeriod(s)), kind(k), Hint(hint) {}
PathDiagnosticPiece::PathDiagnosticPiece(const char* s, Kind k,
DisplayHint hint)
: str(s, GetNumCharsToLastNonPeriod(s)), kind(k), Hint(hint) {}
PathDiagnosticPiece::PathDiagnosticPiece(Kind k, DisplayHint hint)
: kind(k), Hint(hint) {}
PathDiagnosticPiece::~PathDiagnosticPiece() {}
PathDiagnosticEventPiece::~PathDiagnosticEventPiece() {}
PathDiagnosticControlFlowPiece::~PathDiagnosticControlFlowPiece() {}
PathDiagnosticMacroPiece::~PathDiagnosticMacroPiece() {
for (iterator I = begin(), E = end(); I != E; ++I) delete *I;
}
PathDiagnostic::PathDiagnostic() : Size(0) {}
PathDiagnostic::~PathDiagnostic() {
for (iterator I = begin(), E = end(); I != E; ++I) delete &*I;
}
void PathDiagnostic::resetPath(bool deletePieces) {
Size = 0;
if (deletePieces)
for (iterator I=begin(), E=end(); I!=E; ++I)
delete &*I;
path.clear();
}
PathDiagnostic::PathDiagnostic(const char* bugtype, const char* desc,
const char* category)
: Size(0),
BugType(bugtype, GetNumCharsToLastNonPeriod(bugtype)),
Desc(desc, GetNumCharsToLastNonPeriod(desc)),
Category(category, GetNumCharsToLastNonPeriod(category)) {}
PathDiagnostic::PathDiagnostic(const std::string& bugtype,
const std::string& desc,
const std::string& category)
: Size(0),
BugType(bugtype, 0, GetNumCharsToLastNonPeriod(bugtype)),
Desc(desc, 0, GetNumCharsToLastNonPeriod(desc)),
Category(category, 0, GetNumCharsToLastNonPeriod(category)) {}
void PathDiagnosticClient::HandleDiagnostic(Diagnostic::Level DiagLevel,
const DiagnosticInfo &Info) {
// Create a PathDiagnostic with a single piece.
PathDiagnostic* D = new PathDiagnostic();
const char *LevelStr;
switch (DiagLevel) {
default:
case Diagnostic::Ignored: assert(0 && "Invalid diagnostic type");
case Diagnostic::Note: LevelStr = "note: "; break;
case Diagnostic::Warning: LevelStr = "warning: "; break;
case Diagnostic::Error: LevelStr = "error: "; break;
case Diagnostic::Fatal: LevelStr = "fatal error: "; break;
}
llvm::SmallString<100> StrC;
StrC += LevelStr;
Info.FormatDiagnostic(StrC);
PathDiagnosticPiece *P =
new PathDiagnosticEventPiece(Info.getLocation(),
std::string(StrC.begin(), StrC.end()));
for (unsigned i = 0, e = Info.getNumRanges(); i != e; ++i)
P->addRange(Info.getRange(i));
for (unsigned i = 0, e = Info.getNumCodeModificationHints(); i != e; ++i)
P->addCodeModificationHint(Info.getCodeModificationHint(i));
D->push_front(P);
HandlePathDiagnostic(D);
}
//===----------------------------------------------------------------------===//
// PathDiagnosticLocation methods.
//===----------------------------------------------------------------------===//
FullSourceLoc PathDiagnosticLocation::asLocation() const {
assert(isValid());
// Note that we want a 'switch' here so that the compiler can warn us in
// case we add more cases.
switch (K) {
case SingleLocK:
case RangeK:
break;
case StmtK:
return FullSourceLoc(S->getLocStart(), const_cast<SourceManager&>(*SM));
case DeclK:
return FullSourceLoc(D->getLocation(), const_cast<SourceManager&>(*SM));
}
return FullSourceLoc(R.getBegin(), const_cast<SourceManager&>(*SM));
}
SourceRange PathDiagnosticLocation::asRange() const {
assert(isValid());
// Note that we want a 'switch' here so that the compiler can warn us in
// case we add more cases.
switch (K) {
case SingleLocK:
case RangeK:
break;
case StmtK:
return S->getSourceRange();
case DeclK:
if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
return MD->getSourceRange();
if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
return FD->getBody()->getSourceRange();
else {
SourceLocation L = D->getLocation();
return SourceRange(L, L);
}
}
return R;
}
void PathDiagnosticLocation::flatten() {
if (K == StmtK) {
R = asRange();
K = RangeK;
S = 0;
D = 0;
}
else if (K == DeclK) {
SourceLocation L = D->getLocation();
R = SourceRange(L, L);
K = SingleLocK;
S = 0;
D = 0;
}
}
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