Add a new (simple) StringMap::clear method, patch by Pratik

[oota-llvm.git] / include / llvm / ADT / APSInt.h

diff --git a/include/llvm/ADT/APSInt.h b/include/llvm/ADT/APSInt.h
index 77c1c9a984364868264d1f4259784df485a16cb6..705585c8a0c976da8a702ccdc9881f2893a471e0 100644 (file)
--- a/include/llvm/ADT/APSInt.h
+++ b/include/llvm/ADT/APSInt.h
@@ -1,9 +1,9 @@
-//===-- llvm/Support/APSInt.h - Arbitrary Precision Signed Int -*- C++ -*--===//
+//===-- llvm/ADT/APSInt.h - Arbitrary Precision Signed Int -----*- C++ -*--===//
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chris Lattner and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -25,8 +25,11 @@ class APSInt : public APInt {
 public:
   /// APSInt ctor - Create an APSInt with the specified width, default to
   /// unsigned.
-  explicit APSInt(unsigned BitWidth) : APInt(BitWidth, 0), IsUnsigned(true) {}
-  APSInt(const APInt &I) : APInt(I), IsUnsigned(true) {}
+  explicit APSInt(uint32_t BitWidth, bool isUnsigned = true) 
+   : APInt(BitWidth, 0), IsUnsigned(isUnsigned) {}
+
+  explicit APSInt(const APInt &I, bool isUnsigned = true) 
+   : APInt(I), IsUnsigned(isUnsigned) {}
 
   APSInt &operator=(const APSInt &RHS) {
     APInt::operator=(RHS); 
@@ -50,7 +53,29 @@ public:
   bool isSigned() const { return !IsUnsigned; }
   bool isUnsigned() const { return IsUnsigned; }
   void setIsUnsigned(bool Val) { IsUnsigned = Val; }
+  void setIsSigned(bool Val) { IsUnsigned = !Val; }
+  
+  /// This is used internally to convert an APInt to a string.
+  /// @brief Converts an APInt to a std::string
+  std::string toString(uint8_t Radix = 10) const {
+    return APInt::toString(Radix, isSigned());
+  }
+  
+  APSInt& extend(uint32_t width) {
+    if (IsUnsigned)
+      zext(width);
+    else
+      sext(width);
+    return *this;
+  }
   
+  APSInt& extOrTrunc(uint32_t width) {
+      if (IsUnsigned)
+        zextOrTrunc(width);
+      else
+        sextOrTrunc(width);
+      return *this;
+  }
   
   const APSInt &operator%=(const APSInt &RHS) {
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
@@ -70,22 +95,21 @@ public:
   }
   APSInt operator%(const APSInt &RHS) const {
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
-    return IsUnsigned ? urem(RHS) : srem(RHS);
+    return IsUnsigned ? APSInt(urem(RHS), true) : APSInt(srem(RHS), false);
   }
   APSInt operator/(const APSInt &RHS) const {
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
-    return IsUnsigned ? udiv(RHS) : sdiv(RHS);
+    return IsUnsigned ? APSInt(udiv(RHS), true) : APSInt(sdiv(RHS), false);
   }
   
-  const APSInt &operator>>=(unsigned Amt) {
+  APSInt operator>>(unsigned Amt) const {
+    return IsUnsigned ? APSInt(lshr(Amt), true) : APSInt(ashr(Amt), false);
+  }
+  APSInt& operator>>=(unsigned Amt) {
     *this = *this >> Amt;
     return *this;
   }
   
-  APSInt operator>>(unsigned Amt) const {
-    return IsUnsigned ? lshr(Amt) : ashr(Amt);
-  }
-  
   inline bool operator<(const APSInt& RHS) const {
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
     return IsUnsigned ? ult(RHS) : slt(RHS);
@@ -102,6 +126,110 @@ public:
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
     return IsUnsigned ? uge(RHS) : sge(RHS);
   }
+  
+  // The remaining operators just wrap the logic of APInt, but retain the
+  // signedness information.
+  
+  APSInt operator<<(unsigned Bits) const {
+    return APSInt(static_cast<const APInt&>(*this) << Bits, IsUnsigned);
+  }  
+  APSInt& operator<<=(unsigned Amt) {
+    *this = *this << Amt;
+    return *this;
+  }
+  
+  APSInt& operator++() {
+    static_cast<APInt&>(*this)++;
+    return *this;
+  }
+  APSInt& operator--() {
+    static_cast<APInt&>(*this)++;
+    return *this;
+  }
+  APSInt operator++(int) {
+    return APSInt(++static_cast<APInt&>(*this), IsUnsigned);
+  }
+  APSInt operator--(int) {
+    return APSInt(--static_cast<APInt&>(*this), IsUnsigned);
+  } 
+  APSInt operator-() const {
+    return APSInt(-static_cast<const APInt&>(*this), IsUnsigned);
+  }  
+  APSInt& operator+=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) += RHS;
+    return *this;
+  }  
+  APSInt& operator-=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) -= RHS;
+    return *this;
+  }    
+  APSInt& operator*=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) *= RHS;
+    return *this;
+  }
+  APSInt& operator&=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) &= RHS;
+    return *this;
+  }
+  APSInt& operator|=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) |= RHS;
+    return *this;
+  }
+  APSInt& operator^=(const APSInt& RHS) {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    static_cast<APInt&>(*this) ^= RHS;
+    return *this;
+  }
+
+  APSInt operator&(const APSInt& RHS) const {    
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) & RHS, IsUnsigned);
+  }
+  APSInt And(const APSInt& RHS) const {
+    return this->operator&(RHS);
+  }
+  
+  APSInt operator|(const APSInt& RHS) const {    
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) | RHS, IsUnsigned);
+  }
+  APSInt Or(const APSInt& RHS) const {
+    return this->operator|(RHS);
+  }
+  
+  
+  APSInt operator^(const APSInt& RHS) const {    
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) ^ RHS, IsUnsigned);
+  }
+  APSInt Xor(const APSInt& RHS) const {
+    return this->operator^(RHS);
+  }  
+  
+  APSInt operator*(const APSInt& RHS) const {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) * RHS, IsUnsigned);
+  }
+  APSInt operator+(const APSInt& RHS) const {    
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) + RHS, IsUnsigned);
+  }
+  APSInt operator-(const APSInt& RHS) const {
+    assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
+    return APSInt(static_cast<const APInt&>(*this) - RHS, IsUnsigned);
+  }
+  APSInt operator~() const {    
+    return APSInt(~static_cast<const APInt&>(*this), IsUnsigned);
+  }
+  
+  /// Profile - Used to insert APSInt objects, or objects that contain APSInt
+  ///  objects, into FoldingSets.
+  void Profile(FoldingSetNodeID& ID) const;
 };
   
 } // end namespace llvm