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using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Drawing;
using System.Linq;
using System.Text;
using ReClassNET.Extensions;
using ReClassNET.Logger;
using ReClassNET.Nodes;
using ReClassNET.UI;
namespace ReClassNET.CodeGenerator
{
public delegate string GetTypeDefinitionFunc(BaseNode node, ILogger logger);
public delegate string ResolveWrappedTypeFunc(BaseNode node, bool isAnonymousExpression, ILogger logger);
public interface ICustomCppCodeGenerator
{
bool CanHandle(BaseNode node);
BaseNode TransformNode(BaseNode node);
string GetTypeDefinition(BaseNode node, GetTypeDefinitionFunc defaultGetTypeDefinitionFunc, ResolveWrappedTypeFunc defaultResolveWrappedTypeFunc, ILogger logger);
}
public class CppCodeGenerator : ICodeGenerator
{
private static readonly ISet<ICustomCppCodeGenerator> customGenerators = new HashSet<ICustomCppCodeGenerator>();
public static void Add(ICustomCppCodeGenerator generator)
{
customGenerators.Add(generator);
}
public static void Remove(ICustomCppCodeGenerator generator)
{
customGenerators.Remove(generator);
}
private static ICustomCppCodeGenerator GetCustomCodeGeneratorForNode(BaseNode node)
{
return customGenerators.FirstOrDefault(g => g.CanHandle(node));
}
private static readonly Dictionary<Type, string> nodeTypeToTypeDefinationMap = new Dictionary<Type, string>
{
[typeof(BoolNode)] = Program.Settings.TypeBool,
[typeof(DoubleNode)] = Program.Settings.TypeDouble,
[typeof(FloatNode)] = Program.Settings.TypeFloat,
[typeof(FunctionPtrNode)] = Program.Settings.TypeFunctionPtr,
[typeof(Int8Node)] = Program.Settings.TypeInt8,
[typeof(Int16Node)] = Program.Settings.TypeInt16,
[typeof(Int32Node)] = Program.Settings.TypeInt32,
[typeof(Int64Node)] = Program.Settings.TypeInt64,
[typeof(Matrix3x3Node)] = Program.Settings.TypeMatrix3x3,
[typeof(Matrix3x4Node)] = Program.Settings.TypeMatrix3x4,
[typeof(Matrix4x4Node)] = Program.Settings.TypeMatrix4x4,
[typeof(UInt8Node)] = Program.Settings.TypeUInt8,
[typeof(UInt16Node)] = Program.Settings.TypeUInt16,
[typeof(UInt32Node)] = Program.Settings.TypeUInt32,
[typeof(UInt64Node)] = Program.Settings.TypeUInt64,
[typeof(Utf8CharacterNode)] = Program.Settings.TypeUTF8Text,
[typeof(Utf16CharacterNode)] = Program.Settings.TypeUTF16Text,
[typeof(Utf32CharacterNode)] = Program.Settings.TypeUTF32Text,
[typeof(Vector2Node)] = Program.Settings.TypeVector2,
[typeof(Vector3Node)] = Program.Settings.TypeVector3,
[typeof(Vector4Node)] = Program.Settings.TypeVector4
};
#region HelperNodes
private class Utf8CharacterNode : BaseNode
{
public override int MemorySize => throw new NotImplementedException();
public override void GetUserInterfaceInfo(out string name, out Image icon) => throw new NotImplementedException();
public override Size Draw(ViewInfo view, int x, int y) => throw new NotImplementedException();
public override int CalculateDrawnHeight(ViewInfo view) => throw new NotImplementedException();
}
private class Utf16CharacterNode : BaseNode
{
public override int MemorySize => throw new NotImplementedException();
public override void GetUserInterfaceInfo(out string name, out Image icon) => throw new NotImplementedException();
public override Size Draw(ViewInfo view, int x, int y) => throw new NotImplementedException();
public override int CalculateDrawnHeight(ViewInfo view) => throw new NotImplementedException();
}
private class Utf32CharacterNode : BaseNode
{
public override int MemorySize => throw new NotImplementedException();
public override void GetUserInterfaceInfo(out string name, out Image icon) => throw new NotImplementedException();
public override Size Draw(ViewInfo view, int x, int y) => throw new NotImplementedException();
public override int CalculateDrawnHeight(ViewInfo view) => throw new NotImplementedException();
}
#endregion
public Language Language => Language.Cpp;
public string GenerateCode(IEnumerable<ClassNode> classes, ILogger logger)
{
var classNodes = classes as IList<ClassNode> ?? classes.ToList();
var sb = new StringBuilder();
sb.AppendLine($"// Created with {Constants.ApplicationName} {Constants.ApplicationVersion} by {Constants.Author}");
sb.AppendLine();
sb.AppendLine(
string.Join(
Environment.NewLine + Environment.NewLine,
// Skip class which contains FunctionNodes because these are not data classes.
OrderByInheritance(classNodes.Where(c => c.Nodes.None(n => n is FunctionNode))).Select(c =>
{
var csb = new StringBuilder();
csb.Append($"class {c.Name}");
bool skipFirstMember = false;
if (c.Nodes.FirstOrDefault() is ClassInstanceNode inheritedFromNode)
{
skipFirstMember = true;
csb.Append(" : public ");
csb.Append(inheritedFromNode.InnerNode.Name);
}
if (!string.IsNullOrEmpty(c.Comment))
{
csb.Append($" // {c.Comment}");
}
csb.AppendLine();
csb.AppendLine("{");
csb.AppendLine("public:");
csb.AppendLine(
string.Join(
Environment.NewLine,
GetTypeDeclerationsForNodes(c.Nodes.Skip(skipFirstMember ? 1 : 0).WhereNot(n => n is FunctionNode), logger)
.Select(s => "\t" + s)
)
);
var vTableNodes = c.Nodes.OfType<VirtualMethodTableNode>().ToList();
if (vTableNodes.Any())
{
csb.AppendLine();
csb.AppendLine(
string.Join(
Environment.NewLine,
vTableNodes.SelectMany(vt => vt.Nodes).OfType<VirtualMethodNode>().Select(m => $"\tvirtual void {m.MethodName}();")
)
);
}
var functionNodes = classNodes.SelectMany(c2 => c2.Nodes).OfType<FunctionNode>().Where(f => f.BelongsToClass == c).ToList();
if (functionNodes.Any())
{
csb.AppendLine();
csb.AppendLine(
string.Join(
Environment.NewLine,
functionNodes.Select(f => $"\t{f.Signature} {{ }}")
)
);
}
csb.Append($"}}; //Size: 0x{c.MemorySize:X04}");
return csb.ToString();
})
)
);
return sb.ToString();
}
private static IEnumerable<ClassNode> OrderByInheritance(IEnumerable<ClassNode> classes)
{
Contract.Requires(classes != null);
Contract.Requires(Contract.ForAll(classes, c => c != null));
Contract.Ensures(Contract.Result<IEnumerable<ClassNode>>() != null);
var alreadySeen = new HashSet<ClassNode>();
return classes
.SelectMany(c => YieldReversedHierarchy(c, alreadySeen))
.Distinct();
}
private static IEnumerable<ClassNode> YieldReversedHierarchy(ClassNode node, ISet<ClassNode> alreadySeen)
{
Contract.Requires(node != null);
Contract.Requires(alreadySeen != null);
Contract.Requires(Contract.ForAll(alreadySeen, c => c != null));
Contract.Ensures(Contract.Result<IEnumerable<ClassNode>>() != null);
if (!alreadySeen.Add(node))
{
return Enumerable.Empty<ClassNode>();
}
var classNodes = node.Nodes
.OfType<BaseWrapperNode>()
.Where(w => !w.IsNodePresentInChain<PointerNode>()) // Pointers are forward declared
.Select(w => w.ResolveMostInnerNode() as ClassNode)
.Where(n => n != null);
return classNodes
.SelectMany(c => YieldReversedHierarchy(c, alreadySeen))
.Append(node);
}
private static IEnumerable<string> GetTypeDeclerationsForNodes(IEnumerable<BaseNode> members, ILogger logger)
{
Contract.Requires(members != null);
Contract.Requires(Contract.ForAll(members, m => m != null));
Contract.Requires(logger != null);
Contract.Ensures(Contract.Result<IEnumerable<string>>() != null);
Contract.Ensures(Contract.ForAll(Contract.Result<IEnumerable<string>>(), d => d != null));
int fill = 0;
int fillStart = 0;
BaseNode CreatePaddingMember(int offset, int count)
{
var node = new ArrayNode
{
Offset = (IntPtr)offset,
Count = count,
Name = $"pad_{offset:X04}"
};
node.ChangeInnerNode(new Utf8CharacterNode());
return node;
}
foreach (var member in members.WhereNot(m => m is VirtualMethodTableNode))
{
if (member is BaseHexNode)
{
if (fill == 0)
{
fillStart = member.Offset.ToInt32();
}
fill += member.MemorySize;
continue;
}
if (fill != 0)
{
yield return GetTypeDeclerationForNode(CreatePaddingMember(fillStart, fill), logger);
fill = 0;
}
var definition = GetTypeDeclerationForNode(member, logger);
if (definition != null)
{
yield return definition;
}
else
{
logger.Log(LogLevel.Error, $"Skipping node with unhandled type: {member.GetType()}");
}
}
if (fill != 0)
{
yield return GetTypeDeclerationForNode(CreatePaddingMember(fillStart, fill), logger);
}
}
private static string GetTypeDefinition(BaseNode node, ILogger logger)
{
var custom = GetCustomCodeGeneratorForNode(node);
if (custom != null)
{
return custom.GetTypeDefinition(node, GetTypeDefinition, ResolveWrappedType, logger);
}
if (nodeTypeToTypeDefinationMap.TryGetValue(node.GetType(), out var type))
{
return type;
}
if (node is ClassInstanceNode classInstanceNode)
{
return $"class {classInstanceNode.InnerNode.Name}";
}
return null;
}
private static string GetTypeDeclerationForNode(BaseNode node, ILogger logger)
{
var transformedNode = TransformNode(node);
var simpleType = GetTypeDefinition(transformedNode, logger);
if (simpleType != null)
{
return NodeToString(node, simpleType);
}
if (transformedNode is BaseWrapperNode wrapperNode)
{
var sb = new StringBuilder();
sb.Append(ResolveWrappedType(node, false, logger));
sb.Append($"; //0x{node.Offset.ToInt32():X04} {node.Comment}".Trim());
return sb.ToString();
}
return null;
}
private static string ResolveWrappedType(BaseNode node, bool isAnonymousExpression, ILogger logger)
{
Contract.Requires(node != null);
var sb = new StringBuilder();
if (!isAnonymousExpression)
{
sb.Append(node.Name);
}
var lastWrapperNode = node;
var currentNode = node;
while (true)
{
currentNode = TransformNode(currentNode);
if (currentNode is PointerNode pointerNode)
{
sb.Prepend('*');
if (pointerNode.InnerNode == null) // void*
{
if (!isAnonymousExpression)
{
sb.Prepend(' ');
}
sb.Prepend("void");
break;
}
lastWrapperNode = pointerNode;
currentNode = pointerNode.InnerNode;
}
else if (currentNode is ArrayNode arrayNode)
{
if (lastWrapperNode is PointerNode)
{
sb.Prepend('(');
sb.Append(')');
}
sb.Append($"[{arrayNode.Count}]");
lastWrapperNode = arrayNode;
currentNode = arrayNode.InnerNode;
}
else
{
var simpleType = GetTypeDefinition(currentNode, logger);
if (!isAnonymousExpression)
{
sb.Prepend(' ');
}
sb.Prepend(simpleType);
break;
}
}
return sb.ToString().Trim();
}
private static BaseNode TransformNode(BaseNode node)
{
var custom = GetCustomCodeGeneratorForNode(node);
if (custom != null)
{
return custom.TransformNode(node);
}
BaseNode GetCharacterNodeForEncoding(Encoding encoding)
{
if (encoding.Equals(Encoding.Unicode))
{
return new Utf16CharacterNode();
}
if (encoding.Equals(Encoding.UTF32))
{
return new Utf32CharacterNode();
}
return new Utf8CharacterNode();
}
if (node is BaseTextNode textNode)
{
var arrayNode = new ArrayNode { Count = textNode.Length };
arrayNode.CopyFromNode(node);
arrayNode.ChangeInnerNode(GetCharacterNodeForEncoding(textNode.Encoding));
return arrayNode;
}
if (node is BaseTextPtrNode textPtrNode)
{
var pointerNode = new PointerNode();
pointerNode.CopyFromNode(node);
pointerNode.ChangeInnerNode(GetCharacterNodeForEncoding(textPtrNode.Encoding));
return pointerNode;
}
if (node is BitFieldNode bitFieldNode)
{
var underlayingNode = bitFieldNode.GetUnderlayingNode();
underlayingNode.CopyFromNode(node);
return underlayingNode;
}
if (node is BaseHexNode hexNode)
{
var arrayNode = new ArrayNode { Count = hexNode.MemorySize };
arrayNode.CopyFromNode(node);
arrayNode.ChangeInnerNode(new Utf8CharacterNode());
return arrayNode;
}
return node;
}
private static string NodeToString(BaseNode node, string type)
{
Contract.Requires(node != null);
Contract.Requires(type != null);
return $"{type} {node.Name}; //0x{node.Offset.ToInt32():X04} {node.Comment}".Trim();
}
}
}