// All of these readers are completely temporary while research is on-going.
// TODO(gibbed): concrete types for all of this.
internal static (Instruction, uint) Read(Stream input, Endian endian, ICacheTables tables)
{
uint size = 0;
var op = (Opcode)input.ReadValueU8();
size++;
if (_Lookup.TryGetValue(op, out var reader) == false)
{
throw new FormatException($"no handler for {op}");
}
Instruction instance;
instance.Op = op;
if (reader == null)
{
instance.Argument = null;
}
else
{
(var argument, var argumentSize) = reader(input, endian, tables);
instance.Argument = argument;
size += argumentSize;
}
instance.LoadInfo = default;
return(instance, size);
}
private static (object, uint) ReadJump(Stream input, Endian endian, ICacheTables tables)
{
var jumpOffset = input.ReadValueS16(endian);
jumpOffset += 1 + 2; // make relative to the instruction
return(jumpOffset, 2);
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
var visibility = (Visibility)input.ReadValueU8();
var flags = (ClassFlags)input.ReadValueU16();
var unknownFlags = flags & ~KnownFlags;
if (unknownFlags != ClassFlags.None)
{
throw new FormatException();
}
var baseClassIndex = input.ReadValueU32(endian);
var baseClass = tables.GetDefinition <ClassDefinition>(baseClassIndex);
var functions = (flags & ClassFlags.HasFunctions) != 0
? ReadDefinitionArray <FunctionDefinition>(input, endian, tables)
: null;
Definition[] unknown20s;
if ((flags & ClassFlags.Unknown5) != 0)
{
unknown20s = ReadDefinitionArray <PropertyDefinition>(input, endian, tables);
}
Definition[] unknown30s;
if ((flags & ClassFlags.Unknown8) != 0)
{
unknown30s = ReadDefinitionArray <PropertyDefinition>(input, endian, tables);
}
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
this.Id = input.ReadValueU32(endian);
this.PathHash = input.ReadValueU64(endian);
var nameLength = input.ReadValueU16(endian);
this.Path = input.ReadString(nameLength, true, Encoding.UTF8);
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
var typeIndex = input.ReadValueU32(endian);
var type = tables.GetDefinition(typeIndex);
var unknown28 = input.ReadValueU8();
this.Type = type;
this.Unknown28 = unknown28;
}
internal static T[] ReadDefinitionArray <T>(Stream input, Endian endian, ICacheTables tables)
where T : Definition
{
var count = input.ReadValueU32(endian);
var items = new T[count];
for (uint i = 0; i < count; i++)
{
var definitionIndex = input.ReadValueU32(endian);
items[i] = tables.GetDefinition <T>(definitionIndex);
}
return(items);
}
internal static Instruction[] Read(Stream input, uint count, Endian endian, ICacheTables tables)
{
var result = new List <Instruction>();
for (uint i = 0; i < count;)
{
InstructionLoadInfo loadInfo;
loadInfo.BasePosition = input.Position;
loadInfo.Offset = i;
(var instruction, var size) = InstructionReaders.Read(input, endian, tables);
instruction.LoadInfo = loadInfo;
result.Add(instruction);
i += size;
}
return(result.ToArray());
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
// TODO(gibbed): maybe visibility?
var unknown2A = input.ReadValueU8();
var size = input.ReadValueU8();
var enumeralCount = input.ReadValueU32(endian);
var enumerals = new EnumeralDefinition[enumeralCount];
for (uint i = 0; i < enumeralCount; i++)
{
var enumeralIndex = input.ReadValueU32(endian);
enumerals[i] = tables.GetDefinition <EnumeralDefinition>(enumeralIndex);
}
var unknown29 = input.ReadValueB8();
this.Unknown2A = unknown2A;
this.Size = size;
this.Enumerals.Clear();
this.Enumerals.AddRange(enumerals);
this.Unknown29 = unknown29;
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
var unknown24 = input.ReadValueU8();
Definition type;
if (unknown24 >= 2 && unknown24 <= 6)
{
var typeIndex = input.ReadValueU32(endian);
type = tables.GetDefinition(typeIndex);
}
else
{
type = null;
}
var unknown20 = unknown24 == 5
? input.ReadValueU32(endian)
: 0;
this.Unknown24 = unknown24;
this.Type = type;
this.Unknown20 = unknown20;
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
var visibility = (Visibility)input.ReadValueU8();
var unknown88Index = input.ReadValueU32(endian);
var unknown88 = tables.GetDefinition <NativeDefinition>(unknown88Index);
var unknown20 = input.ReadValueU16(endian);
if ((unknown20 & 0x20) != 0)
{
var somethingLength = input.ReadValueU16(endian);
var something = input.ReadString(somethingLength, true, Encoding.UTF8);
}
var unknown58Count = input.ReadValueU32(endian);
var unknown58s = new Tuple <string, string> [unknown58Count];
for (uint i = 0; i < unknown58Count; i++)
{
var unknown58_0Length = input.ReadValueU16(endian);
var unknown58_0 = input.ReadString(unknown58_0Length, true, Encoding.UTF8);
var unknown58_1Length = input.ReadValueU16(endian);
var unknown58_1 = input.ReadString(unknown58_1Length, true, Encoding.UTF8);
unknown58s[i] = new Tuple <string, string>(unknown58_0, unknown58_1);
}
var unknown38Count = input.ReadValueU32(endian);
var unknown38s = new Tuple <string, string> [unknown38Count];
for (uint i = 0; i < unknown38Count; i++)
{
var unknown38Length = input.ReadValueU16(endian);
var unknown38 = input.ReadString(unknown38Length, true, Encoding.UTF8);
var unknown28Length = input.ReadValueU16(endian);
var unknown28 = input.ReadString(unknown28Length, true, Encoding.UTF8);
unknown38s[i] = new Tuple <string, string>(unknown38, unknown28);
}
}
internal abstract void Serialize(Stream output, Endian endian, ICacheTables tables);
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
var visibility = (Visibility)input.ReadValueU8();
var flags = (FunctionFlags)input.ReadValueU32(endian);
var unknownFlags = flags & ~KnownFlags;
if (unknownFlags != FunctionFlags.None)
{
throw new FormatException();
}
SourceFileDefinition sourceFile;
uint unknownC0;
if ((flags & FunctionFlags.Unknown4) == 0)
{
var sourceFileIndex = input.ReadValueU32(endian);
sourceFile = tables.GetDefinition <SourceFileDefinition>(sourceFileIndex);
unknownC0 = input.ReadValueU32(endian);
}
else
{
sourceFile = null;
unknownC0 = 0;
}
Definition returnType;
bool unknown50;
if ((flags & FunctionFlags.HasReturnValue) == 0)
{
returnType = null;
unknown50 = false;
}
else
{
var returnTypeIndex = input.ReadValueU32(endian);
returnType = tables.GetDefinition(returnTypeIndex);
unknown50 = input.ReadValueB8();
}
Definition unknown58;
if ((flags & FunctionFlags.Unknown8) == 0)
{
unknown58 = null;
}
else
{
var unknown58Index = input.ReadValueU32(endian);
unknown58 = tables.GetDefinition(unknown58Index);
}
ParameterDefinition[] parameters;
if ((flags & FunctionFlags.HasParameters) == 0)
{
parameters = null;
}
else
{
parameters = ReadDefinitionArray <ParameterDefinition>(input, endian, tables);
}
LocalDefinition[] locals;
if ((flags & FunctionFlags.HasLocals) == 0)
{
locals = null;
}
else
{
locals = ReadDefinitionArray <LocalDefinition>(input, endian, tables);
}
uint unknown98 = (flags & FunctionFlags.Unknown6) != 0
? input.ReadValueU32(endian)
: default;
byte unknownA0 = (flags & FunctionFlags.Unknown12) != 0
? input.ReadValueU8()
: default;
long bodyPosition = -1;
Instruction[] instructions;
if ((flags & FunctionFlags.HasBody) == 0)
{
instructions = null;
}
else
{
var bodySize = input.ReadValueU32(endian);
bodyPosition = input.Position;
instructions = Instructions.Read(input, bodySize, endian, tables);
}
this.Visibility = visibility;
this.Flags = flags;
this.SourceFile = sourceFile;
this.SourceLine = unknownC0;
this.ReturnType = returnType;
this.Unknown50 = unknown50;
this.Unknown58 = unknown58;
this.Parameters = parameters;
this.Locals = locals;
this.Unknown98 = unknown98;
this.UnknownA0 = unknownA0;
this.BodyLoadPosition = bodyPosition;
this.Body = instructions;
}
private static (object, uint) ReadType(Stream input, Endian endian, ICacheTables tables)
{
var definitionIndex = input.ReadValueU32(endian);
return(new ValueTuple <Definition>(tables.GetDefinition(definitionIndex)), 8);
}
internal override void Serialize(Stream output, Endian endian, ICacheTables tables)
{
throw new NotImplementedException();
}
internal override void Deserialize(Stream input, Endian endian, ICacheTables tables)
{
this.Value = input.ReadValueU64(endian);
}
private static (object, uint) ReadValueS32(Stream input, Endian endian, ICacheTables tables)
{
return(input.ReadValueS32(endian), 4);
}
private static (object, uint) ReadValueU8(Stream input, Endian endian, ICacheTables tables)
{
return(input.ReadValueU8(), 1);
}
internal abstract void Deserialize(Stream input, Endian endian, ICacheTables tables);
private static (object, uint) ReadString(Stream input, Endian endian, ICacheTables tables)
{
var size = input.ReadValueU32(endian);
return(input.ReadString((int)size, true, Encoding.UTF8), 4 + size);
}
