From f27e5a09a0d815b8a4814152954ff87dadfdefc0 Mon Sep 17 00:00:00 2001
From: ed <ed@FreeBSD.org>
Date: Tue, 2 Jun 2009 17:58:47 +0000
Subject: Import Clang, at r72732.

---
 lib/AST/APValue.cpp | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 lib/AST/APValue.cpp

(limited to 'lib/AST/APValue.cpp')

diff --git a/lib/AST/APValue.cpp b/lib/AST/APValue.cpp
new file mode 100644
index 0000000..4df7671
--- /dev/null
+++ b/lib/AST/APValue.cpp
@@ -0,0 +1,108 @@
+//===--- APValue.cpp - Union class for APFloat/APSInt/Complex -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file implements the APValue class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/APValue.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace clang;
+
+
+const APValue &APValue::operator=(const APValue &RHS) {
+  if (Kind != RHS.Kind) {
+    MakeUninit();
+    if (RHS.isInt())
+      MakeInt();
+    else if (RHS.isFloat())
+      MakeFloat();
+    else if (RHS.isVector())
+      MakeVector();
+    else if (RHS.isComplexInt())
+      MakeComplexInt();
+    else if (RHS.isComplexFloat())
+      MakeComplexFloat();
+    else if (RHS.isLValue())
+      MakeLValue();
+  }
+  if (isInt())
+    setInt(RHS.getInt());
+  else if (isFloat())
+    setFloat(RHS.getFloat());
+  else if (isVector())
+    setVector(((Vec*)(void*)RHS.Data)->Elts, RHS.getVectorLength());
+  else if (isComplexInt())
+    setComplexInt(RHS.getComplexIntReal(), RHS.getComplexIntImag());
+  else if (isComplexFloat())
+    setComplexFloat(RHS.getComplexFloatReal(), RHS.getComplexFloatImag());
+  else if (isLValue())
+    setLValue(RHS.getLValueBase(), RHS.getLValueOffset());
+  return *this;
+}
+
+void APValue::MakeUninit() {
+  if (Kind == Int)
+    ((APSInt*)(void*)Data)->~APSInt();
+  else if (Kind == Float)
+    ((APFloat*)(void*)Data)->~APFloat();
+  else if (Kind == Vector)
+    ((Vec*)(void*)Data)->~Vec();
+  else if (Kind == ComplexInt)
+    ((ComplexAPSInt*)(void*)Data)->~ComplexAPSInt();
+  else if (Kind == ComplexFloat)
+    ((ComplexAPFloat*)(void*)Data)->~ComplexAPFloat();
+  else if (Kind == LValue) {
+    ((LV*)(void*)Data)->~LV();
+  }
+  Kind = Uninitialized;
+}
+
+void APValue::dump() const {
+  print(llvm::errs());
+  llvm::errs() << '\n';
+}
+
+static double GetApproxValue(const llvm::APFloat &F) {
+  llvm::APFloat V = F;
+  bool ignored;
+  V.convert(llvm::APFloat::IEEEdouble, llvm::APFloat::rmNearestTiesToEven,
+            &ignored);
+  return V.convertToDouble();
+}
+
+void APValue::print(llvm::raw_ostream &OS) const {
+  switch (getKind()) {
+  default: assert(0 && "Unknown APValue kind!");
+  case Uninitialized:
+    OS << "Uninitialized";
+    return;
+  case Int:
+    OS << "Int: " << getInt();
+    return;
+  case Float:
+    OS << "Float: " << GetApproxValue(getFloat());
+    return;
+  case Vector:
+    OS << "Vector: " << getVectorElt(0);
+    for (unsigned i = 1; i != getVectorLength(); ++i) 
+      OS << ", " << getVectorElt(i);
+    return;
+  case ComplexInt:
+    OS << "ComplexInt: " << getComplexIntReal() << ", " << getComplexIntImag();
+    return;
+  case ComplexFloat:
+    OS << "ComplexFloat: " << GetApproxValue(getComplexFloatReal())
+       << ", " << GetApproxValue(getComplexFloatImag());
+  case LValue:
+    OS << "LValue: <todo>";
+    return;
+  }
+}
+
-- 
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