commit ee8aff06f6a96214731de17b2cb6df407c6c1820
author Douglas Gregor <dgregor@apple.com> Tue Jan 04 17:33:58 2011 +0000
committer Douglas Gregor <dgregor@apple.com> Tue Jan 04 17:33:58 2011 +0000
tree b3ceca1e1f5b668c492de0c8ddec937e78b228fa
parent bb03f5dbc23fb9aa1dfdf6a1dfdb192aa56b6b1c

Implement the sizeof...(pack) expression to compute the length of a
parameter pack.

Note that we're missing proper libclang support for the new
SizeOfPackExpr expression node.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122813 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Serialization/ASTReaderStmt.cpp

diff --git a/lib/Serialization/ASTReaderStmt.cpp b/lib/Serialization/ASTReaderStmt.cpp
index 4703c63..5ed6f8e 100644
--- a/lib/Serialization/ASTReaderStmt.cpp
+++ b/lib/Serialization/ASTReaderStmt.cpp
@@ -177,6 +177,7 @@
     void VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *E);
     void VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
     void VisitPackExpansionExpr(PackExpansionExpr *E);
+    void VisitSizeOfPackExpr(SizeOfPackExpr *E);
     
     void VisitOpaqueValueExpr(OpaqueValueExpr *E);
   };
@@ -1294,6 +1295,15 @@
   E->Pattern = Reader.ReadSubExpr();  
 }
 
+void ASTStmtReader::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
+  VisitExpr(E);
+  E->OperatorLoc = ReadSourceLocation(Record, Idx);
+  E->PackLoc = ReadSourceLocation(Record, Idx);
+  E->RParenLoc = ReadSourceLocation(Record, Idx);
+  E->Length = Record[Idx++];
+  E->Pack = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+}
+
 void ASTStmtReader::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
   VisitExpr(E);
 }
@@ -1820,6 +1830,10 @@
       S = new (Context) PackExpansionExpr(Empty);
       break;
         
+    case EXPR_SIZEOF_PACK:
+      S = new (Context) SizeOfPackExpr(Empty);
+      break;
+        
     case EXPR_OPAQUE_VALUE:
       S = new (Context) OpaqueValueExpr(Empty);
       break;

lib/Serialization/ASTWriterStmt.cpp

diff --git a/lib/Serialization/ASTWriterStmt.cpp b/lib/Serialization/ASTWriterStmt.cpp
index 27261db..af066bb 100644
--- a/lib/Serialization/ASTWriterStmt.cpp
+++ b/lib/Serialization/ASTWriterStmt.cpp
@@ -151,6 +151,7 @@
     void VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *E);
     void VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
     void VisitPackExpansionExpr(PackExpansionExpr *E);
+    void VisitSizeOfPackExpr(SizeOfPackExpr *E);
     void VisitOpaqueValueExpr(OpaqueValueExpr *E);
   };
 }
@@ -1303,6 +1304,16 @@
   Code = serialization::EXPR_PACK_EXPANSION;
 }
 
+void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
+  VisitExpr(E);
+  Writer.AddSourceLocation(E->OperatorLoc, Record);
+  Writer.AddSourceLocation(E->PackLoc, Record);
+  Writer.AddSourceLocation(E->RParenLoc, Record);
+  Record.push_back(E->Length);
+  Writer.AddDeclRef(E->Pack, Record);
+  Code = serialization::EXPR_SIZEOF_PACK;
+}
+
 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
   VisitExpr(E);
   Code = serialization::EXPR_OPAQUE_VALUE;