mir/libreoffice
2
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

loplugin:stringconcat: Handle base case of recursion into left arg

Browse Source 
Change-Id: I9ed8586e8b77b009d55e411fdaa863eefc38b1c2
This commit is contained in:
Stephan Bergmann 2015-12-02 11:38:07 +01:00
parent a38110216c
commit f540e9264c
1 changed files with 23 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
compilerplugins/clang/stringconcat.cxx
View File

@ -39,22 +39,28 @@ bool StringConcat::VisitCallExpr(CallExpr const * expr) {
{
return true;
}
CallExpr const * left = dyn_cast<CallExpr>(
expr->getArg(0)->IgnoreParenImpCasts());
if (left == nullptr) {
return true;
}
FunctionDecl const * ldecl = left->getDirectCallee();
if (ldecl == nullptr) {
return true;
}
OverloadedOperatorKind loo = ldecl->getOverloadedOperator();
if ((loo != OverloadedOperatorKind::OO_Plus
&& loo != OverloadedOperatorKind::OO_LessLess)
|| ldecl->getNumParams() != 2 || left->getNumArgs() != 2
|| !isa<StringLiteral>(left->getArg(1)->IgnoreParenImpCasts()))
{
return true;
SourceLocation leftLoc;
auto const leftExpr = expr->getArg(0)->IgnoreParenImpCasts();
if (isa<StringLiteral>(leftExpr)) {
leftLoc = leftExpr->getLocStart();
} else {
CallExpr const * left = dyn_cast<CallExpr>(leftExpr);
if (left == nullptr) {
return true;
}
FunctionDecl const * ldecl = left->getDirectCallee();
if (ldecl == nullptr) {
return true;
}
OverloadedOperatorKind loo = ldecl->getOverloadedOperator();
if ((loo != OverloadedOperatorKind::OO_Plus
&& loo != OverloadedOperatorKind::OO_LessLess)
|| ldecl->getNumParams() != 2 || left->getNumArgs() != 2
|| !isa<StringLiteral>(left->getArg(1)->IgnoreParenImpCasts()))
{
return true;
}
leftLoc = left->getArg(1)->getLocStart();
}
StringRef name {
compiler.getSourceManager().getFilename(
@ -70,8 +76,7 @@ bool StringConcat::VisitCallExpr(CallExpr const * expr) {
"replace '%0' between string literals with juxtaposition",
op == nullptr ? expr->getExprLoc() : op->getOperatorLoc())
<< (oo == OverloadedOperatorKind::OO_Plus ? "+" : "<<")
<< SourceRange(
left->getArg(1)->getLocStart(), expr->getArg(1)->getLocEnd());
<< SourceRange(leftLoc, expr->getArg(1)->getLocEnd());
return true;
}