public ReturnToken(BytecodeToken returnValue)
: base(returnValue.ToString().Length > 0 ? "return " + returnValue : "return")
{
_returnValue = returnValue;
}
internal BytecodeToken ReadNext()
{
byte b = _reader.ReadByte();
switch (b)
{
case EX_LocalVariable:
case EX_InstanceVariable:
case EX_NativeParm:
return(ReadRef(r => r.ObjectName));
case EX_DefaultVariable:
return(ReadRef(r => "Default." + r.ObjectName));
case EX_Return:
BytecodeToken returnValue = ReadNext();
return(new ReturnToken(returnValue));
case EX_Assert:
_reader.ReadInt16();
_reader.ReadByte();
return(WrapNextBytecode(c => new BytecodeToken("assert(" + c + ")")));
case EX_Switch:
byte b1 = _reader.ReadByte();
BytecodeToken switchExpr = ReadNext();
return(new SwitchToken(switchExpr.ToString(), switchExpr));
case EX_Case:
{
short offset = _reader.ReadInt16();
if (offset == -1)
{
return(new DefaultToken());
}
BytecodeToken caseExpr = ReadNext();
return(new CaseToken(caseExpr.ToString()));
}
case EX_Jump:
{
int offset = _reader.ReadInt16();
return(new UncondJumpToken(offset));
}
case EX_JumpIfNot:
{
short offset = _reader.ReadInt16();
BytecodeToken condition = ReadNext();
if (IsInvalid(condition))
{
return(WrapErrToken("if (!" + condition, condition));
}
return(new JumpIfNotToken(offset, condition));
}
case EX_LabelTable:
{
var token = new LabelTableToken();
while (true)
{
string labelName = ReadName();
if (labelName == "None")
{
break;
}
int offset = _reader.ReadInt32();
token.AddLabel(labelName, offset);
}
return(token);
}
case EX_GotoLabel:
return(WrapNextBytecode(op => Token("goto " + op)));
case EX_Self:
return(Token("self"));
case EX_Skip:
_reader.ReadInt16();
return(ReadNext());
case EX_EatReturnValue:
_reader.ReadInt32();
return(ReadNext());
case EX_Nothing:
return(new NothingToken());
case EX_Stop:
_reader.ReadInt16();
return(new NothingToken());
case EX_IntZero:
return(Token("0"));
case EX_IntOne:
return(Token("1"));
case EX_True:
return(Token("true"));
case EX_False:
return(Token("false"));
case EX_NoObject:
case EX_EmptyDelegate:
return(Token("None"));
case EX_Let:
case EX_LetBool:
case EX_LetDelegate:
BytecodeToken lhs = ReadNext();
if (IsInvalid(lhs))
{
return(lhs);
}
BytecodeToken rhs = ReadNext();
if (IsInvalid(rhs))
{
return(WrapErrToken(lhs + " = " + rhs, rhs));
}
return(Token(lhs + " = " + rhs));
case EX_IntConst:
return(Token(_reader.ReadInt32().ToString()));
case EX_FloatConst:
return(Token(_reader.ReadSingle().ToString()));
case EX_StringConst:
{
var s = ReadAsciiz().Replace("\n", "\\n").Replace("\t", "\\t");
return(Token("\"" + s + "\""));
}
case EX_ByteConst:
case EX_IntConstByte:
return(Token(_reader.ReadByte().ToString()));
case EX_ObjectConst:
{
int objectIndex = _reader.ReadInt32();
var item = _package.ResolveClassItem(objectIndex);
if (item == null)
{
return(ErrToken("Unresolved class item " + objectIndex));
}
return(Token(item.ClassName + "'" + item.ObjectName + "'"));
}
case EX_NameConst:
return(Token("'" + _package.Names[(int)_reader.ReadInt64()].Name + "'"));
case EX_EndFunctionParms:
return(new EndParmsToken(")"));
case EX_ClassContext:
case EX_Context:
{
var context = ReadNext();
if (IsInvalid(context))
{
return(context);
}
int exprSize = _reader.ReadInt16();
int bSize = _reader.ReadByte();
var value = ReadNext();
if (IsInvalid(value))
{
return(WrapErrToken(context + "." + value, value));
}
return(Token(context + "." + value));
}
case EX_InterfaceContext:
return(ReadNext());
case EX_FinalFunction:
{
int functionIndex = _reader.ReadInt32();
var item = _package.ResolveClassItem(functionIndex);
if (item == null)
{
return(ErrToken("Unresolved function item " + item));
}
string functionName = item.ObjectName;
return(ReadCall(functionName));
}
case EX_PrimitiveCast:
{
var prefix = _reader.ReadByte();
var v = ReadNext();
return(v);
}
case EX_VirtualFunction:
return(ReadCall(ReadName()));
case EX_GlobalFunction:
return(ReadCall("Global." + ReadName()));
case EX_BoolVariable:
case EX_ByteToInt:
return(ReadNext());
case EX_DynamicCast:
{
int typeIndex = _reader.ReadInt32();
var item = _package.ResolveClassItem(typeIndex);
return(WrapNextBytecode(op => Token(item.ObjectName + "(" + op + ")")));
}
case EX_Metacast:
{
int typeIndex = _reader.ReadInt32();
var item = _package.ResolveClassItem(typeIndex);
if (item == null)
{
return(ErrToken("Unresolved class item " + typeIndex));
}
return(WrapNextBytecode(op => Token("Class<" + item.ObjectName + ">(" + op + ")")));
}
case EX_StructMember:
{
var field = ReadRef();
var structType = ReadRef();
int wSkip = _reader.ReadInt16();
var token = ReadNext();
if (IsInvalid(token))
{
return(token);
}
return(Token(token + "." + field.ObjectName));
}
case EX_ArrayElement:
case EX_DynArrayElement:
{
var index = ReadNext();
if (IsInvalid(index))
{
return(index);
}
var array = ReadNext();
if (IsInvalid(array))
{
return(array);
}
return(Token(array + "[" + index + "]"));
}
case EX_DynArrayLength:
return(WrapNextBytecode(op => Token(op + ".Length")));
case EX_StructCmpEq:
return(CompareStructs("=="));
case EX_StructCmpNe:
return(CompareStructs("!="));
case EX_EndOfScript:
return(new EndOfScriptToken());
case EX_EmptyParmValue:
case EX_GoW_DefaultValue:
return(new DefaultValueToken(""));
case EX_DefaultParmValue:
{
var size = _reader.ReadInt16();
var offset = _reader.BaseStream.Position;
var defaultValueExpr = ReadNext();
_reader.BaseStream.Position = offset + size;
return(new DefaultParamValueToken(defaultValueExpr.ToString()));
}
case EX_LocalOutVariable:
int valueIndex = _reader.ReadInt32();
var packageItem = _package.ResolveClassItem(valueIndex);
if (packageItem == null)
{
return(ErrToken("Unresolved package item " + packageItem));
}
return(Token(packageItem.ObjectName));
case EX_Iterator:
var expr = ReadNext();
int loopEnd = _reader.ReadInt16();
if (IsInvalid(expr))
{
return(WrapErrToken("foreach " + expr, expr));
}
return(new ForeachToken(loopEnd, expr));
case EX_IteratorPop:
return(new IteratorPopToken());
case EX_IteratorNext:
return(new IteratorNextToken());
case EX_New:
var outer = ReadNext();
if (IsInvalid(outer))
{
return(outer);
}
var name = ReadNext();
if (IsInvalid(name))
{
return(name);
}
var flags = ReadNext();
if (IsInvalid(flags))
{
return(flags);
}
var cls = ReadNext();
if (IsInvalid(cls))
{
return(cls);
}
return(Token("new(" + JoinTokens(outer, name, flags, cls) + ")"));
case EX_VectorConst:
var f1 = _reader.ReadSingle();
var f2 = _reader.ReadSingle();
var f3 = _reader.ReadSingle();
return(Token("vect(" + f1 + "," + f2 + "," + f3 + ")"));
case EX_RotationConst:
var i1 = _reader.ReadInt32();
var i2 = _reader.ReadInt32();
var i3 = _reader.ReadInt32();
return(Token("rot(" + i1 + "," + i2 + "," + i3 + ")"));
case EX_InterfaceCast:
{
var interfaceName = ReadRef();
return(WrapNextBytecode(op => Token(interfaceName.ObjectName + "(" + op + ")")));
}
case EX_Conditional:
{
var condition = ReadNext();
if (IsInvalid(condition))
{
return(condition);
}
var trueSize = _reader.ReadInt16();
var pos = _reader.BaseStream.Position;
var truePart = ReadNext();
if (IsInvalid(truePart))
{
return(WrapErrToken(condition + " ? " + truePart, truePart));
}
if (_reader.BaseStream.Position != pos + trueSize)
{
return(ErrToken("conditional true part size mismatch"));
}
var falseSize = _reader.ReadInt16();
pos = _reader.BaseStream.Position;
var falsePart = ReadNext();
if (IsInvalid(truePart))
{
return(WrapErrToken(condition + " ? " + truePart + " : " + falsePart, falsePart));
}
Debug.Assert(_reader.BaseStream.Position == pos + falseSize);
return(Token(condition + " ? " + truePart + " : " + falsePart));
}
case EX_DynArrayFind:
return(ReadDynArray1ArgMethod("Find"));
case EX_DynArrayFindStruct:
return(ReadDynArray2ArgMethod("Find", true));
case EX_DynArrayRemove:
return(ReadDynArray2ArgMethod("Remove", false));
case EX_DynArrayInsert:
return(ReadDynArray2ArgMethod("Insert", false));
case EX_DynArrayAddItem:
return(ReadDynArray1ArgMethod("AddItem"));
case EX_DynArrayRemoveItem:
return(ReadDynArray1ArgMethod("RemoveItem"));
case EX_DynArrayInsertItem:
return(ReadDynArray2ArgMethod("InsertItem", true));
case EX_DynArrayIterator:
{
var array = ReadNext();
if (IsInvalid(array))
{
return(array);
}
var iteratorVar = ReadNext();
if (IsInvalid(iteratorVar))
{
return(iteratorVar);
}
_reader.ReadInt16();
var endOffset = _reader.ReadInt16();
return(new ForeachToken(endOffset, array, iteratorVar));
}
case EX_DelegateProperty:
case EX_InstanceDelegate:
return(Token(ReadName()));
case EX_DelegateFunction:
{
var receiver = ReadNext();
if (IsInvalid(receiver))
{
return(receiver);
}
var methodName = ReadName();
if (receiver.ToString().StartsWith("__") && receiver.ToString().EndsWith("__Delegate"))
{
return(ReadCall(methodName));
}
return(ReadCall(receiver + "." + methodName));
}
case EX_EqualEqual_DelDel:
case EX_EqualEqual_DelFunc:
return(CompareDelegates("=="));
case EX_NotEqual_DelDel:
return(CompareDelegates("!="));
default:
if (b >= 0x60)
{
return(ReadNativeCall(b));
}
return(ErrToken("// unknown bytecode " + b.ToString("X2"), b));
}
}
public ReturnToken(BytecodeToken returnValue)
: base(returnValue.ToString().Length > 0 ? "return " + returnValue : "return")
{
_returnValue = returnValue;
}
