Improve source-location information for builtin TypeLocs, from Enea

Zaffanella (with a couple of my tweaks).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93733 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/AST/TypeLoc.cpp b/lib/AST/TypeLoc.cpp
index 0840c52b4c..6da2ab0dee 100644
--- a/lib/AST/TypeLoc.cpp
+++ b/lib/AST/TypeLoc.cpp
@@ -14,6 +14,7 @@
 #include "llvm/Support/raw_ostream.h"
 #include "clang/AST/TypeLocVisitor.h"
 #include "clang/AST/Expr.h"
+#include "llvm/Support/ErrorHandling.h"
 using namespace clang;
 
 //===----------------------------------------------------------------------===//
@@ -135,3 +136,58 @@ SourceRange TypeOfExprTypeLoc::getSourceRange() const {
     return SourceRange(getTypeofLoc(),
                        getUnderlyingExpr()->getSourceRange().getEnd());
 }
+
+
+TypeSpecifierType BuiltinTypeLoc::getWrittenTypeSpec() const {
+  if (needsExtraLocalData())
+    return static_cast<TypeSpecifierType>(getWrittenBuiltinSpecs().Type);
+  else {
+    switch (getTypePtr()->getKind()) {
+    case BuiltinType::Void:
+      return TST_void;
+    case BuiltinType::Bool:
+      return TST_bool;
+    case BuiltinType::Char_U:
+    case BuiltinType::Char_S:
+      return TST_char;
+    case BuiltinType::Char16:
+      return TST_char16;        
+    case BuiltinType::Char32:
+      return TST_char32;
+    case BuiltinType::WChar:
+      return TST_wchar;
+    case BuiltinType::Float:
+      return TST_float;
+    case BuiltinType::Double:
+    case BuiltinType::LongDouble:
+      return TST_double;
+    case BuiltinType::UndeducedAuto:
+      return TST_auto;
+        
+    case BuiltinType::UChar:
+    case BuiltinType::UShort:
+    case BuiltinType::UInt:
+    case BuiltinType::ULong:
+    case BuiltinType::ULongLong:
+    case BuiltinType::UInt128:
+    case BuiltinType::SChar:
+    case BuiltinType::Short:
+    case BuiltinType::Int:
+    case BuiltinType::Long:
+    case BuiltinType::LongLong:
+    case BuiltinType::Int128:
+      llvm_unreachable("Builtin type needs extra local data!");
+      // Fall through, if the impossible happens.
+        
+    case BuiltinType::NullPtr:
+    case BuiltinType::Overload:
+    case BuiltinType::Dependent:
+    case BuiltinType::ObjCId:
+    case BuiltinType::ObjCClass:
+    case BuiltinType::ObjCSel:
+      return TST_unspecified;
+    }
+  }
+  
+  return TST_unspecified;
+}