/// <summary>
/// Gets the type definition for the given node. If the node is not expressible <c>null</c> as typename is returned.
/// </summary>
/// <param name="node">The target node.</param>
/// <returns>The type definition for the node or null as typename if the node is not expressible.</returns>
private static (string typeName, string attribute) GetTypeDefinition(BaseNode node)
{
Contract.Requires(node != null);
if (node is BitFieldNode bitFieldNode)
{
var underlayingNode = bitFieldNode.GetUnderlayingNode();
underlayingNode.CopyFromNode(node);
node = underlayingNode;
}
if (nodeTypeToTypeDefinationMap.TryGetValue(node.GetType(), out var type))
{
return(type, null);
}
return(node switch
{
EnumNode enumNode => (enumNode.Enum.Name, null),
Utf8TextNode utf8TextNode => ("string", $"[MarshalAs(UnmanagedType.ByValTStr, SizeConst = {utf8TextNode.Length})]"),
Utf16TextNode utf16TextNode => (GetUnicodeStringClassName(utf16TextNode.Length), "[MarshalAs(UnmanagedType.Struct)]"),
_ => (null, null)
});
public static bool GuessNode(BaseHexNode node, IProcessReader reader, MemoryBuffer memory, out BaseNode guessedNode)
{
Contract.Requires(node != null);
Contract.Requires(memory != null);
guessedNode = null;
var offset = node.Offset;
var is4ByteAligned = offset % 4 == 0;
var is8ByteAligned = offset % 8 == 0;
// The node is not aligned, skip it.
if (!is4ByteAligned)
{
return(false);
}
var data64 = new UInt64FloatDoubleData
{
Raw1 = memory.ReadInt32(offset),
Raw2 = memory.ReadInt32(offset + sizeof(int))
};;
var data32 = new UInt32FloatData
{
Raw = memory.ReadInt32(offset)
};
var raw = memory.ReadBytes(offset, node.MemorySize);
if (raw.InterpretAsSingleByteCharacter().IsLikelyPrintableData())
{
guessedNode = new Utf8TextNode();
return(true);
}
if (raw.InterpretAsDoubleByteCharacter().IsLikelyPrintableData())
{
guessedNode = new Utf16TextNode();
return(true);
}
#if RECLASSNET64
if (is8ByteAligned)
{
if (GuessPointerNode(data64.IntPtr, reader, out guessedNode))
{
return(true);
}
}
#else
if (GuessPointerNode(data32.IntPtr, reader, out guessedNode))
{
return(true);
}
#endif
// 0 could be anything.
if (data32.IntValue != 0)
{
// If the data represents a reasonable range, it could be a float.
if (-999999.0f <= data32.FloatValue && data32.FloatValue <= 999999.0f && !data32.FloatValue.IsNearlyEqual(0.0f, 0.001f))
{
guessedNode = new FloatNode();
return(true);
}
if (-999999 <= data32.IntValue && data32.IntValue <= 999999)
{
guessedNode = new Int32Node();
return(true);
}
}
if (is8ByteAligned)
{
if (data64.LongValue != 0)
{
// If the data represents a reasonable range, it could be a double.
if (-999999.0 <= data64.DoubleValue && data64.DoubleValue <= 999999.0 && !data64.DoubleValue.IsNearlyEqual(0.0, 0.001))
{
guessedNode = new DoubleNode();
return(true);
}
}
}
return(false);
}
