/// CheckResults - This compares the expected results to those that
/// were actually reported. It emits any discrepencies. Return "true" if there
/// were problems. Return "false" otherwise.
///
static bool CheckResults(Preprocessor &PP,
const DiagList &ExpectedErrors,
const DiagList &ExpectedWarnings,
const DiagList &ExpectedNotes) {
const DiagnosticClient *DiagClient = PP.getDiagnostics().getClient();
assert(DiagClient != 0 &&
"DiagChecker requires a valid TextDiagnosticBuffer");
const TextDiagnosticBuffer &Diags =
static_cast<const TextDiagnosticBuffer&>(*DiagClient);
SourceManager &SourceMgr = PP.getSourceManager();
// We want to capture the delta between what was expected and what was
// seen.
//
// Expected \ Seen - set expected but not seen
// Seen \ Expected - set seen but not expected
bool HadProblem = false;
// See if there are error mismatches.
HadProblem |= CompareDiagLists(SourceMgr,
ExpectedErrors.begin(), ExpectedErrors.end(),
Diags.err_begin(), Diags.err_end(),
"Errors expected but not seen:",
"Errors seen but not expected:");
// See if there are warning mismatches.
HadProblem |= CompareDiagLists(SourceMgr,
ExpectedWarnings.begin(),
ExpectedWarnings.end(),
Diags.warn_begin(), Diags.warn_end(),
"Warnings expected but not seen:",
"Warnings seen but not expected:");
// See if there are note mismatches.
HadProblem |= CompareDiagLists(SourceMgr,
ExpectedNotes.begin(),
ExpectedNotes.end(),
Diags.note_begin(), Diags.note_end(),
"Notes expected but not seen:",
"Notes seen but not expected:");
return HadProblem;
}
/// CompareDiagLists - Compare two diagnostic lists and return the difference
/// between them.
///
static bool CompareDiagLists(SourceManager &SourceMgr,
const_diag_iterator d1_begin,
const_diag_iterator d1_end,
const_diag_iterator d2_begin,
const_diag_iterator d2_end,
const char *MsgLeftOnly,
const char *MsgRightOnly) {
DiagList LeftOnly;
DiagList Left(d1_begin, d1_end);
DiagList Right(d2_begin, d2_end);
for (const_diag_iterator I = Left.begin(), E = Left.end(); I != E; ++I) {
unsigned LineNo1 = SourceMgr.getInstantiationLineNumber(I->first);
const std::string &Diag1 = I->second;
DiagList::iterator II, IE;
for (II = Right.begin(), IE = Right.end(); II != IE; ++II) {
unsigned LineNo2 = SourceMgr.getInstantiationLineNumber(II->first);
if (LineNo1 != LineNo2) continue;
const std::string &Diag2 = II->second;
if (Diag2.find(Diag1) != std::string::npos ||
Diag1.find(Diag2) != std::string::npos) {
break;
}
}
if (II == IE) {
// Not found.
LeftOnly.push_back(*I);
} else {
// Found. The same cannot be found twice.
Right.erase(II);
}
}
// Now all that's left in Right are those that were not matched.
return PrintProblem(SourceMgr, LeftOnly.begin(), LeftOnly.end(), MsgLeftOnly)
| PrintProblem(SourceMgr, Right.begin(), Right.end(), MsgRightOnly);
}