P0217R3: Parsing support and framework for AST representation of C++1z
decomposition declarations.
There are a couple of things in the wording that seem strange here:
decomposition declarations are permitted at namespace scope (which we partially
support here) and they are permitted as the declaration in a template (which we
reject).
llvm-svn: 276492
diff --git a/clang/lib/AST/DeclCXX.cpp b/clang/lib/AST/DeclCXX.cpp
index d069bfd..7e6c725 100644
--- a/clang/lib/AST/DeclCXX.cpp
+++ b/clang/lib/AST/DeclCXX.cpp
@@ -2306,6 +2306,44 @@
nullptr, SourceLocation(), false);
}
+void BindingDecl::anchor() {}
+
+BindingDecl *BindingDecl::Create(ASTContext &C, DeclContext *DC,
+ SourceLocation IdLoc, IdentifierInfo *Id) {
+ return new (C, DC) BindingDecl(DC, IdLoc, Id);
+}
+
+BindingDecl *BindingDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
+ return new (C, ID) BindingDecl(nullptr, SourceLocation(), nullptr);
+}
+
+void DecompositionDecl::anchor() {}
+
+DecompositionDecl *DecompositionDecl::Create(ASTContext &C, DeclContext *DC,
+ SourceLocation StartLoc,
+ SourceLocation LSquareLoc,
+ QualType T, TypeSourceInfo *TInfo,
+ StorageClass SC,
+ ArrayRef<BindingDecl *> Bindings) {
+ size_t Extra = additionalSizeToAlloc<BindingDecl *>(Bindings.size());
+ return new (C, DC, Extra)
+ DecompositionDecl(C, DC, StartLoc, LSquareLoc, T, TInfo, SC, Bindings);
+}
+
+DecompositionDecl *DecompositionDecl::CreateDeserialized(ASTContext &C,
+ unsigned ID,
+ unsigned NumBindings) {
+ size_t Extra = additionalSizeToAlloc<BindingDecl *>(NumBindings);
+ auto *Result = new (C, ID, Extra) DecompositionDecl(
+ C, nullptr, SourceLocation(), SourceLocation(), QualType(), nullptr, StorageClass(), None);
+ // Set up and clean out the bindings array.
+ Result->NumBindings = NumBindings;
+ auto *Trail = Result->getTrailingObjects<BindingDecl *>();
+ for (unsigned I = 0; I != NumBindings; ++I)
+ new (Trail + I) BindingDecl*(nullptr);
+ return Result;
+}
+
MSPropertyDecl *MSPropertyDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L, DeclarationName N,
QualType T, TypeSourceInfo *TInfo,