NEWS.txt

New in SVN
----------

 *  Updated the type system's behavior, in order to better support backwards
    compatibility with code that was written before 64-bit integer support was
    introduced. Here's how it works now:

     *  isInt, isInt64, isUInt, and isUInt64 return true if and only if the
        value can be exactly represented as that type. In particular, a value
        constructed with a double like 17.0 will now return true for all of
        these methods.

     *  isDouble and isFloat now return true for all numeric values, since all
        numeric values can be converted to a double or float without
        truncation. Note however that the conversion may not be exact -- for
        example, doubles cannot exactly represent all integers above 2^53 + 1.

     *  isBool, isNull, isString, isArray, and isObject now return true if and
        only if the value is of that type.

     *  isConvertibleTo(fooValue) indicates that it is safe to call asFoo.
        (For each type foo, isFoo always implies isConvertibleTo(fooValue).)
        asFoo returns an approximate or exact representation as appropriate.
        For example, a double value may be truncated when asInt is called.

     *  For backwards compatibility with old code, isConvertibleTo(intValue)
        may return false even if type() == intValue. This is because the value
        may have been constructed with a 64-bit integer larger than maxInt,
        and calling asInt() would cause an exception. If you're writing new
        code, use isInt64 to find out whether the value is exactly
        representable using an Int64, or asDouble() combined with minInt64 and
        maxInt64 to figure out whether it is approximately representable.


  New in JsonCpp 0.6.0:
  ---------------------

* Compilation

  - LD_LIBRARY_PATH and LIBRARY_PATH environment variables are now 
    propagated to the build environment as this is required for some 
    compiler installation.

  - Added support for Microsoft Visual Studio 2008 (bug #2930462): 
    The platform "msvc90" has been added.

    Notes: you need to setup the environment by running vcvars32.bat 
    (e.g. MSVC 2008 command prompt in start menu) before running scons.
    
  - Added support for amalgamated source and header generation (a la sqlite).
    Refer to README.txt section "Generating amalgamated source and header"
    for detail.
    
* Value

  - Removed experimental ValueAllocator, it caused static 
    initialization/destruction order issues (bug #2934500). 
    The DefaultValueAllocator has been inlined in code.
    
  - Added support for 64 bits integer:
  
    Types Json::Int64 and Json::UInt64 have been added. They are aliased
	to 64 bits integers on system that support them (based on __int64 on 
	Microsoft Visual Studio platform, and long long on other platforms).
	
	Types Json::LargestInt and Json::LargestUInt have been added. They are
	aliased to the largest integer type supported: 
	either Json::Int/Json::UInt or Json::Int64/Json::UInt64 respectively.
	
	Json::Value::asInt() and Json::Value::asUInt() still returns plain
	"int" based types, but asserts if an attempt is made to retrieve
	a 64 bits value that can not represented as the return type.
	
	Json::Value::asInt64() and Json::Value::asUInt64() have been added
	to obtain the 64 bits integer value.
	
	Json::Value::asLargestInt() and Json::Value::asLargestUInt() returns
	the integer as a LargestInt/LargestUInt respectively. Those functions
	functions are typically used when implementing writer.
	
	The reader attempts to read number as 64 bits integer, and fall back
	to reading a double if the number is not in the range of 64 bits 
	integer.
    
    Warning: Json::Value::asInt() and Json::Value::asUInt() now returns
    long long. This changes break code that was passing the return value
    to *printf() function.
  
    Support for 64 bits integer can be disabled by defining the macro 
	JSON_NO_INT64 (uncomment it in json/config.h for example), though
	it should have no impact on existing usage.
    
  - The type Json::ArrayIndex is used for indexes of a JSON value array. It
    is an unsigned int (typically 32 bits).
	
  - Array index can be passed as int to operator[], allowing use of literal:
    Json::Value array;
	array.append( 1234 );
	int value = array[0].asInt();  // did not compile previously

  - Added float Json::Value::asFloat() to obtain a floating point value as a
    float (avoid lost of precision warning caused by used of asDouble() 
    to initialize a float).

* Reader

  - Renamed Reader::getFormatedErrorMessages() to getFormattedErrorMessages.
    Bug #3023708 (Formatted has 2 't'). The old member function is deprecated
    but still present for backward compatibility.
    
* Tests

  - Added test to ensure that the escape sequence "\/" is corrected handled 
    by the parser.

* Bug fixes

  - Bug #3139677: JSON [1 2 3] was incorrectly parsed as [1, 3]. Error is now 
    correctly detected.
    
  - Bug #3139678: stack buffer overflow when parsing a double with a
    length of 32 characters.
	
  - Fixed Value::operator <= implementation (had the semantic of operator >=).
    Found when adding unit tests for comparison operators.
    
  - Value::compare() is now const and has an actual implementation with
    unit tests.

  - Bug #2407932: strpbrk() can fail for NULL pointer.

  - Bug #3306345: Fixed minor typo in Path::resolve().

  - Bug #3314841/#3306896: errors in amalgamate.py

  - Fixed some Coverity warnings and line-endings.
    
* License
  
  - See file LICENSE for details. Basically JsonCpp is now licensed under 
    MIT license, or public domain if desired and recognized in your jurisdiction.
    Thanks to Stephan G. Beal [http://wanderinghorse.net/home/stephan/]) who
	helped figuring out the solution to the public domain issue.