Major rework of 64 integer support: 64 bits integer are only returned when explicitly request via Json::Value::asInt64(), unlike previous implementation where Json::Value::asInt() returned a 64 bits integer.

This eases porting portable code and does not break compatibility with the previous release.

Json::Value::asLargestInt() has also be added to ease writing portable code independent of 64 bits integer support. It is typically used to implement writers.

src/lib_json/json_tool.h

@@ -63,7 +63,7 @@ isControlCharacter(char ch)
 
 enum { 
    /// Constant that specify the size of the buffer that must be passed to uintToString.
-   uintToStringBufferSize = 3*sizeof(UInt)+1 
+   uintToStringBufferSize = 3*sizeof(LargestUInt)+1 
 };
 
 // Defines a char buffer for use with uintToString().
@@ -76,7 +76,7 @@ typedef char UIntToStringBuffer[uintToStringBufferSize];
  *        Must have at least uintToStringBufferSize chars free.
  */
 static inline void 
-uintToString( UInt value, 
+uintToString( LargestUInt value, 
               char *&current )
 {
    *--current = 0;