- Move double and int implementations into dart:core and make them private.

lib/integers.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // TODO(srdjan): fix limitations.
 // - shift amount must be a Smi.
-class IntegerImplementation {
-  factory IntegerImplementation._uninstantiable() {
+class _IntegerImplementation {
+  factory _IntegerImplementation._uninstantiable() {
     throw const UnsupportedOperationException(
-        "IntegerImplementation can only be allocated by the VM");
+        "_IntegerImplementation can only be allocated by the VM");
   }
   num operator +(num other) {
     return other.addFromInteger(this);
   }
   num operator -(num other) {
     return other.subFromInteger(this);
   }
   num operator *(num other) {
     return other.mulFromInteger(this);
   }
@@ skipping 104 matching lines @@
       return EQUAL;
     }
   }
 
   int round() { return this; }
   int floor() { return this; }
   int ceil() { return this; }
   int truncate() { return this; }
 
   int toInt() { return this; }
-  double toDouble() { return new Double.fromInteger(this); }
+  double toDouble() { return new _Double.fromInteger(this); }
 
   int pow(int exponent) {
     double res = this.toDouble().pow(exponent);
     if (res.isInfinite()) {
       // Use Bigint instead.
-      throw "IntegerImplementation.pow not implemented for large integers.";
+      throw "_IntegerImplementation.pow not implemented for large integers.";
     }
     return res.toInt();
   }
 
   String toStringAsFixed(int fractionDigits) {
     return this.toDouble().toStringAsFixed(fractionDigits);
   }
   String toStringAsExponential(int fractionDigits) {
     return this.toDouble().toStringAsExponential(fractionDigits);
   }
@@ skipping 19 matching lines @@
     }
     StringBuffer buffer = new StringBuffer();
     if (isNegative) buffer.add("-");
     for (int i = temp.length - 1; i >= 0; i--) {
       buffer.add(table[temp[i]]);
     }
     return buffer.toString();
   }
 }
 
-class Smi extends IntegerImplementation implements int {
-  factory Smi._uninstantiable() {
+class _Smi extends _IntegerImplementation implements int {
+  factory _Smi._uninstantiable() {
     throw const UnsupportedOperationException(
-        "Smi can only be allocated by the VM");
+        "_Smi can only be allocated by the VM");
   }
   int hashCode() {
     return this;
   }
   int operator ~() native "Smi_bitNegate";
   int shrFromInt(int other) native "Smi_shrFromInt";
   int shlFromInt(int other) native "Smi_shlFromInt";
 }
 
 // Represents integers that cannot be represented by Smi but fit into 64bits.
-class Mint extends IntegerImplementation implements int {
-  factory Mint._uninstantiable() {
+class _Mint extends _IntegerImplementation implements int {
+  factory _Mint._uninstantiable() {
     throw const UnsupportedOperationException(
-        "Mint can only be allocated by the VM");
+        "_Mint can only be allocated by the VM");
   }
   int hashCode() {
     return this;
   }
   int operator ~() native "Mint_bitNegate";
 
   // Shift by mint exceeds range that can be handled by the VM.
   int shrFromInt(int other) {
     if (other < 0) {
       return -1;
     } else {
       return 0;
     }
   }
   int shlFromInt(int other) {
     throw const OutOfMemoryException();
   }
 }
 
 // A number that can be represented as Smi or Mint will never be represented as
 // Bigint.
-class Bigint extends IntegerImplementation implements int {
-  factory Bigint._uninstantiable() {
+class _Bigint extends _IntegerImplementation implements int {
+  factory _Bigint._uninstantiable() {
     throw const UnsupportedOperationException(
-        "Bigint can only be allocated by the VM");
+        "_Bigint can only be allocated by the VM");
   }
   int hashCode() {
     return this;
   }
   int operator ~() native "Bigint_bitNegate";
 
   // Shift by bigint exceeds range that can be handled by the VM.
   int shrFromInt(int other) {
     if (other < 0) {
       return -1;
     } else {
       return 0;
     }
   }
   int shlFromInt(int other) {
     throw const OutOfMemoryException();
   }
 
   int pow(int exponent) {
     throw "Bigint.pow not implemented";
   }
 }