dgoldman created this revision.
dgoldman requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
We suggest inserting the method with an empty body at the end
of the implementation decl.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D116417
Files:
clang/lib/Sema/SemaDeclObjC.cpp
Index: clang/lib/Sema/SemaDeclObjC.cpp
===================================================================
--- clang/lib/Sema/SemaDeclObjC.cpp
+++ clang/lib/Sema/SemaDeclObjC.cpp
@@ -2212,9 +2212,8 @@
Diag(IVI->getLocation(), diag::err_inconsistent_ivar_count);
}
-static void WarnUndefinedMethod(Sema &S, SourceLocation ImpLoc,
- ObjCMethodDecl *method,
- bool &IncompleteImpl,
+static void WarnUndefinedMethod(Sema &S, ObjCImplDecl *Impl,
+ ObjCMethodDecl *method, bool &IncompleteImpl,
unsigned DiagID,
NamedDecl *NeededFor = nullptr) {
// No point warning no definition of method which is 'unavailable'.
@@ -2227,10 +2226,22 @@
// separate warnings. We will give that approach a try, as that
// matches what we do with protocols.
{
- const Sema::SemaDiagnosticBuilder &B = S.Diag(ImpLoc, DiagID);
+ const Sema::SemaDiagnosticBuilder &B = S.Diag(Impl->getLocation(), DiagID);
B << method;
if (NeededFor)
B << NeededFor;
+
+ // Provide a simple fix it which inserts the missing method with an empty
+ // body at the end of the implementation. In the future we could try to find
+ // a better place to put it.
+ std::string Str;
+ llvm::raw_string_ostream Out(Str);
+ PrintingPolicy Policy(Impl->getASTContext().getPrintingPolicy());
+ method->print(Out, Policy);
+ Str.append(" {\n\n}\n\n");
+
+ SourceLocation Loc = Impl->getAtEndRange().getBegin();
+ B << FixItHint::CreateInsertion(Loc, Str);
}
// Issue a note to the original declaration.
@@ -2679,14 +2690,10 @@
/// CheckProtocolMethodDefs - This routine checks unimplemented methods
/// Declared in protocol, and those referenced by it.
-static void CheckProtocolMethodDefs(Sema &S,
- SourceLocation ImpLoc,
- ObjCProtocolDecl *PDecl,
- bool& IncompleteImpl,
- const Sema::SelectorSet &InsMap,
- const Sema::SelectorSet &ClsMap,
- ObjCContainerDecl *CDecl,
- LazyProtocolNameSet &ProtocolsExplictImpl) {
+static void CheckProtocolMethodDefs(
+ Sema &S, ObjCImplDecl *Impl, ObjCProtocolDecl *PDecl, bool &IncompleteImpl,
+ const Sema::SelectorSet &InsMap, const Sema::SelectorSet &ClsMap,
+ ObjCContainerDecl *CDecl, LazyProtocolNameSet &ProtocolsExplictImpl) {
ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(CDecl);
ObjCInterfaceDecl *IDecl = C ? C->getClassInterface()
: dyn_cast<ObjCInterfaceDecl>(CDecl);
@@ -2773,9 +2780,8 @@
if (C || MethodInClass->isPropertyAccessor())
continue;
unsigned DIAG = diag::warn_unimplemented_protocol_method;
- if (!S.Diags.isIgnored(DIAG, ImpLoc)) {
- WarnUndefinedMethod(S, ImpLoc, method, IncompleteImpl, DIAG,
- PDecl);
+ if (!S.Diags.isIgnored(DIAG, Impl->getLocation())) {
+ WarnUndefinedMethod(S, Impl, method, IncompleteImpl, DIAG, PDecl);
}
}
}
@@ -2796,15 +2802,15 @@
continue;
unsigned DIAG = diag::warn_unimplemented_protocol_method;
- if (!S.Diags.isIgnored(DIAG, ImpLoc)) {
- WarnUndefinedMethod(S, ImpLoc, method, IncompleteImpl, DIAG, PDecl);
+ if (!S.Diags.isIgnored(DIAG, Impl->getLocation())) {
+ WarnUndefinedMethod(S, Impl, method, IncompleteImpl, DIAG, PDecl);
}
}
}
// Check on this protocols's referenced protocols, recursively.
for (auto *PI : PDecl->protocols())
- CheckProtocolMethodDefs(S, ImpLoc, PI, IncompleteImpl, InsMap, ClsMap,
- CDecl, ProtocolsExplictImpl);
+ CheckProtocolMethodDefs(S, Impl, PI, IncompleteImpl, InsMap, ClsMap, CDecl,
+ ProtocolsExplictImpl);
}
/// MatchAllMethodDeclarations - Check methods declared in interface
@@ -2827,7 +2833,7 @@
if (!I->isPropertyAccessor() &&
!InsMap.count(I->getSelector())) {
if (ImmediateClass)
- WarnUndefinedMethod(*this, IMPDecl->getLocation(), I, IncompleteImpl,
+ WarnUndefinedMethod(*this, IMPDecl, I, IncompleteImpl,
diag::warn_undef_method_impl);
continue;
} else {
@@ -2857,7 +2863,7 @@
if (!I->isPropertyAccessor() &&
!ClsMap.count(I->getSelector())) {
if (ImmediateClass)
- WarnUndefinedMethod(*this, IMPDecl->getLocation(), I, IncompleteImpl,
+ WarnUndefinedMethod(*this, IMPDecl, I, IncompleteImpl,
diag::warn_undef_method_impl);
} else {
ObjCMethodDecl *ImpMethodDecl =
@@ -3024,16 +3030,15 @@
if (ObjCInterfaceDecl *I = dyn_cast<ObjCInterfaceDecl> (CDecl)) {
for (auto *PI : I->all_referenced_protocols())
- CheckProtocolMethodDefs(*this, IMPDecl->getLocation(), PI, IncompleteImpl,
- InsMap, ClsMap, I, ExplicitImplProtocols);
+ CheckProtocolMethodDefs(*this, IMPDecl, PI, IncompleteImpl, InsMap,
+ ClsMap, I, ExplicitImplProtocols);
} else if (ObjCCategoryDecl *C = dyn_cast<ObjCCategoryDecl>(CDecl)) {
// For extended class, unimplemented methods in its protocols will
// be reported in the primary class.
if (!C->IsClassExtension()) {
for (auto *P : C->protocols())
- CheckProtocolMethodDefs(*this, IMPDecl->getLocation(), P,
- IncompleteImpl, InsMap, ClsMap, CDecl,
- ExplicitImplProtocols);
+ CheckProtocolMethodDefs(*this, IMPDecl, P, IncompleteImpl, InsMap,
+ ClsMap, CDecl, ExplicitImplProtocols);
DiagnoseUnimplementedProperties(S, IMPDecl, CDecl,
/*SynthesizeProperties=*/false);
}
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
