forked from OSchip/llvm-project
243 lines
7.4 KiB
C++
243 lines
7.4 KiB
C++
//===--- PathDiagnostic.cpp - Path-Specific Diagnostic Handling -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the PathDiagnostic-related interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Analysis/PathDiagnostic.h"
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#include "clang/AST/Expr.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/AST/StmtCXX.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Casting.h"
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#include <sstream>
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using namespace clang;
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using llvm::dyn_cast;
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using llvm::isa;
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bool PathDiagnosticMacroPiece::containsEvent() const {
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for (const_iterator I = begin(), E = end(); I!=E; ++I) {
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if (isa<PathDiagnosticEventPiece>(*I))
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return true;
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if (PathDiagnosticMacroPiece *MP = dyn_cast<PathDiagnosticMacroPiece>(*I))
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if (MP->containsEvent())
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return true;
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}
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return false;
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}
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static size_t GetNumCharsToLastNonPeriod(const char *s) {
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const char *start = s;
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const char *lastNonPeriod = 0;
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for ( ; *s != '\0' ; ++s)
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if (*s != '.') lastNonPeriod = s;
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if (!lastNonPeriod)
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return 0;
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return (lastNonPeriod - start) + 1;
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}
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static inline size_t GetNumCharsToLastNonPeriod(const std::string &s) {
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return s.empty () ? 0 : GetNumCharsToLastNonPeriod(&s[0]);
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}
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PathDiagnosticPiece::PathDiagnosticPiece(const std::string& s,
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Kind k, DisplayHint hint)
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: str(s, 0, GetNumCharsToLastNonPeriod(s)), kind(k), Hint(hint) {}
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PathDiagnosticPiece::PathDiagnosticPiece(const char* s, Kind k,
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DisplayHint hint)
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: str(s, GetNumCharsToLastNonPeriod(s)), kind(k), Hint(hint) {}
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PathDiagnosticPiece::PathDiagnosticPiece(Kind k, DisplayHint hint)
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: kind(k), Hint(hint) {}
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PathDiagnosticPiece::~PathDiagnosticPiece() {}
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PathDiagnosticEventPiece::~PathDiagnosticEventPiece() {}
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PathDiagnosticControlFlowPiece::~PathDiagnosticControlFlowPiece() {}
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PathDiagnosticMacroPiece::~PathDiagnosticMacroPiece() {
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for (iterator I = begin(), E = end(); I != E; ++I) delete *I;
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}
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PathDiagnostic::PathDiagnostic() : Size(0) {}
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PathDiagnostic::~PathDiagnostic() {
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for (iterator I = begin(), E = end(); I != E; ++I) delete &*I;
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}
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void PathDiagnostic::resetPath(bool deletePieces) {
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Size = 0;
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if (deletePieces)
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for (iterator I=begin(), E=end(); I!=E; ++I)
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delete &*I;
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path.clear();
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}
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PathDiagnostic::PathDiagnostic(const char* bugtype, const char* desc,
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const char* category)
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: Size(0),
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BugType(bugtype, GetNumCharsToLastNonPeriod(bugtype)),
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Desc(desc, GetNumCharsToLastNonPeriod(desc)),
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Category(category, GetNumCharsToLastNonPeriod(category)) {}
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PathDiagnostic::PathDiagnostic(const std::string& bugtype,
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const std::string& desc,
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const std::string& category)
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: Size(0),
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BugType(bugtype, 0, GetNumCharsToLastNonPeriod(bugtype)),
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Desc(desc, 0, GetNumCharsToLastNonPeriod(desc)),
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Category(category, 0, GetNumCharsToLastNonPeriod(category)) {}
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void PathDiagnosticClient::HandleDiagnostic(Diagnostic::Level DiagLevel,
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const DiagnosticInfo &Info) {
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// Create a PathDiagnostic with a single piece.
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PathDiagnostic* D = new PathDiagnostic();
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const char *LevelStr;
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switch (DiagLevel) {
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default:
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case Diagnostic::Ignored: assert(0 && "Invalid diagnostic type");
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case Diagnostic::Note: LevelStr = "note: "; break;
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case Diagnostic::Warning: LevelStr = "warning: "; break;
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case Diagnostic::Error: LevelStr = "error: "; break;
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case Diagnostic::Fatal: LevelStr = "fatal error: "; break;
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}
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llvm::SmallString<100> StrC;
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StrC += LevelStr;
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Info.FormatDiagnostic(StrC);
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PathDiagnosticPiece *P =
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new PathDiagnosticEventPiece(Info.getLocation(),
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std::string(StrC.begin(), StrC.end()));
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for (unsigned i = 0, e = Info.getNumRanges(); i != e; ++i)
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P->addRange(Info.getRange(i));
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for (unsigned i = 0, e = Info.getNumCodeModificationHints(); i != e; ++i)
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P->addCodeModificationHint(Info.getCodeModificationHint(i));
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D->push_front(P);
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HandlePathDiagnostic(D);
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}
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//===----------------------------------------------------------------------===//
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// PathDiagnosticLocation methods.
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//===----------------------------------------------------------------------===//
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FullSourceLoc PathDiagnosticLocation::asLocation() const {
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assert(isValid());
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// Note that we want a 'switch' here so that the compiler can warn us in
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// case we add more cases.
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switch (K) {
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case SingleLocK:
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case RangeK:
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break;
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case StmtK:
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return FullSourceLoc(S->getLocStart(), const_cast<SourceManager&>(*SM));
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case DeclK:
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return FullSourceLoc(D->getLocation(), const_cast<SourceManager&>(*SM));
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}
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return FullSourceLoc(R.getBegin(), const_cast<SourceManager&>(*SM));
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}
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PathDiagnosticRange PathDiagnosticLocation::asRange() const {
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assert(isValid());
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// Note that we want a 'switch' here so that the compiler can warn us in
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// case we add more cases.
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switch (K) {
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case SingleLocK:
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return PathDiagnosticRange(R, true);
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case RangeK:
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break;
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case StmtK: {
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const Stmt *S = asStmt();
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switch (S->getStmtClass()) {
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default:
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break;
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case Stmt::DeclStmtClass: {
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const DeclStmt *DS = cast<DeclStmt>(S);
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if (DS->isSingleDecl()) {
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// Should always be the case, but we'll be defensive.
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return SourceRange(DS->getLocStart(),
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DS->getSingleDecl()->getLocation());
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}
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break;
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}
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// FIXME: Provide better range information for different
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// terminators.
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case Stmt::IfStmtClass:
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case Stmt::WhileStmtClass:
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case Stmt::DoStmtClass:
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case Stmt::ForStmtClass:
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case Stmt::ChooseExprClass:
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case Stmt::IndirectGotoStmtClass:
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case Stmt::SwitchStmtClass:
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case Stmt::ConditionalOperatorClass:
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case Stmt::ObjCForCollectionStmtClass: {
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SourceLocation L = S->getLocStart();
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return SourceRange(L, L);
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}
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}
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return S->getSourceRange();
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}
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case DeclK:
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if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D))
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return MD->getSourceRange();
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if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
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// FIXME: We would like to always get the function body, even
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// when it needs to be de-serialized, but getting the
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// ASTContext here requires significant changes.
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if (Stmt *Body = FD->getBodyIfAvailable()) {
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if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Body))
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return CS->getSourceRange();
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else
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return cast<CXXTryStmt>(Body)->getSourceRange();
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}
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}
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else {
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SourceLocation L = D->getLocation();
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return PathDiagnosticRange(SourceRange(L, L), true);
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}
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}
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return R;
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}
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void PathDiagnosticLocation::flatten() {
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if (K == StmtK) {
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R = asRange();
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K = RangeK;
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S = 0;
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D = 0;
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}
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else if (K == DeclK) {
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SourceLocation L = D->getLocation();
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R = SourceRange(L, L);
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K = SingleLocK;
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S = 0;
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D = 0;
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}
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}
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