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BugReporter (extensive diagnostics): Add EdgeBuilder::cleanUpLocation for canonicalization locations and use this in both popLocation and rawAddEdge. 

llvm-svn: 71470
This commit is contained in:
Ted Kremenek 2009-05-11 19:50:47 +00:00
parent d4dacb05cc
commit c14b594b14
1 changed files with 34 additions and 28 deletions
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62
clang/lib/Analysis/BugReporter.cpp
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@ -214,7 +214,7 @@ PathDiagnosticBuilder::getEnclosingStmtLocation(const Stmt *S) {
SourceManager &SMgr = getSourceManager();
while (isa<Expr>(S) && P.isConsumedExpr(cast<Expr>(S))) {
const Stmt *Parent = P.getParent(S);
const Stmt *Parent = P.getParentIgnoreParens(S);
if (!Parent)
break;
@ -225,8 +225,7 @@ PathDiagnosticBuilder::getEnclosingStmtLocation(const Stmt *S) {
if (B->isLogicalOp())
return PathDiagnosticLocation(S, SMgr);
break;
}
}
case Stmt::CompoundStmtClass:
case Stmt::StmtExprClass:
return PathDiagnosticLocation(S, SMgr);
@ -778,28 +777,32 @@ class VISIBILITY_HIDDEN EdgeBuilder {
PathDiagnosticLocation getContextLocation(const PathDiagnosticLocation &L);
PathDiagnosticLocation cleanUpLocation(const PathDiagnosticLocation &L) {
if (const Stmt *S = L.asStmt()) {
while (1) {
// Adjust the location for some expressions that are best referenced
// by one of their subexpressions.
if (const ParenExpr *PE = dyn_cast<ParenExpr>(S))
S = PE->IgnoreParens();
else if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(S))
S = CO->getCond();
else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(S))
S = CE->getCond();
else if (const BinaryOperator *BE = dyn_cast<BinaryOperator>(S))
S = BE->getLHS();
else
break;
}
return PathDiagnosticLocation(S, L.getManager());
}
return L;
}
void popLocation() {
if (!CLocs.back().isDead() && CLocs.back().asLocation().isFileID()) {
PathDiagnosticLocation L = CLocs.back();
if (const Stmt *S = L.asStmt()) {
while (1) {
// Adjust the location for some expressions that are best referenced
// by one of their subexpressions.
if (const ParenExpr *PE = dyn_cast<ParenExpr>(S))
S = PE->IgnoreParens();
else if (const ConditionalOperator *CO = dyn_cast<ConditionalOperator>(S))
S = CO->getCond();
else if (const ChooseExpr *CE = dyn_cast<ChooseExpr>(S))
S = CE->getCond();
else if (const BinaryOperator *BE = dyn_cast<BinaryOperator>(S))
S = BE->getLHS();
else
break;
}
L = PathDiagnosticLocation(S, L.getManager());
}
PathDiagnosticLocation L = cleanUpLocation(CLocs.back());
// For contexts, we only one the first character as the range.
L = PathDiagnosticLocation(L.asLocation(), L.getManager());
@ -926,16 +929,19 @@ void EdgeBuilder::rawAddEdge(PathDiagnosticLocation NewLoc) {
return;
}
if (NewLoc.asLocation() == PrevLoc.asLocation())
const PathDiagnosticLocation &NewLocClean = cleanUpLocation(NewLoc);
const PathDiagnosticLocation &PrevLocClean = cleanUpLocation(PrevLoc);
if (NewLocClean.asLocation() == PrevLocClean.asLocation())
return;
// FIXME: Ignore intra-macro edges for now.
if (NewLoc.asLocation().getInstantiationLoc() ==
PrevLoc.asLocation().getInstantiationLoc())
if (NewLocClean.asLocation().getInstantiationLoc() ==
PrevLocClean.asLocation().getInstantiationLoc())
return;
PD.push_front(new PathDiagnosticControlFlowPiece(NewLoc, PrevLoc));
PrevLoc = NewLoc;
PD.push_front(new PathDiagnosticControlFlowPiece(NewLocClean, PrevLocClean));
PrevLoc = NewLoc;
}
void EdgeBuilder::addEdge(PathDiagnosticLocation NewLoc, bool alwaysAdd) {