ObjC migrator: finding conforming protocol
candidates for each class. wip.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186349 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 8984c3c..8a252f8 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -8129,3 +8129,35 @@
}
return I->second;
}
+
+bool
+ASTContext::ObjCMethodsAreEqual(const ObjCMethodDecl *MethodDecl,
+ const ObjCMethodDecl *MethodImpl) {
+ // No point trying to match an unavailable/deprecated mothod.
+ if (MethodDecl->hasAttr<UnavailableAttr>()
+ || MethodDecl->hasAttr<DeprecatedAttr>())
+ return false;
+ if (MethodDecl->getObjCDeclQualifier() !=
+ MethodImpl->getObjCDeclQualifier())
+ return false;
+ if (!hasSameType(MethodDecl->getResultType(),
+ MethodImpl->getResultType()))
+ return false;
+
+ if (MethodDecl->param_size() != MethodImpl->param_size())
+ return false;
+
+ for (ObjCMethodDecl::param_const_iterator IM = MethodImpl->param_begin(),
+ IF = MethodDecl->param_begin(), EM = MethodImpl->param_end(),
+ EF = MethodDecl->param_end();
+ IM != EM && IF != EF; ++IM, ++IF) {
+ const ParmVarDecl *DeclVar = (*IF);
+ const ParmVarDecl *ImplVar = (*IM);
+ if (ImplVar->getObjCDeclQualifier() != DeclVar->getObjCDeclQualifier())
+ return false;
+ if (!hasSameType(DeclVar->getType(), ImplVar->getType()))
+ return false;
+ }
+ return (MethodDecl->isVariadic() == MethodImpl->isVariadic());
+
+}