public Expression DecompileInOpNaive(String opName, bool useEndOfParms = false, bool isStruct = false)
{
// TODO: ugly, wrong.
PopByte();
if (isStruct)
{
ReadObject(); // struct type?
}
var left = DecompileExpression();
if (left == null)
{
return(null); // ERROR
}
var right = DecompileExpression();
if (right == null)
{
return(null); // ERROR
}
if (useEndOfParms)
{
PopByte();
}
StartPositions.Pop();
var op = new InOpDeclaration(opName, 0, true, null, null, null, null, null, null, null);
return(new InOpReference(op, left, right, null, null));
}
/*
* TODO: All of these need verification and changes
* */
#region UnsuportedDecompilers
public Expression DecompileGoW_DefaultValue()
{
PopByte();
var unkn = ReadByte();
var expr = DecompileExpression();
StartPositions.Pop();
var op = new InOpDeclaration("", 0, 0, null, null, null);
var objRef = new SymbolReference(null, "UNSUPPORTED: GoW_DefaultValue: Byte:" + unkn + " - ", null, null);
return(new InOpReference(op, objRef, expr, null, null));
}
/*
* TODO: All of these need verification and changes
* */
#region UnsuportedDecompilers
public Expression DecompileEatReturn() // TODO: only skips one object? see code.
{
PopByte();
var obj = ReadObject();
var expr = DecompileExpression();
StartPositions.Pop();
var op = new InOpDeclaration("", 0, true, null, null, null, null, null, null, null);
var objRef = new SymbolReference(null, null, null, "UNSUPPORTED: EatReturnValue: " + obj.ObjectName + "|" + obj.ClassName + " -");
return(new InOpReference(op, objRef, expr, null, null));
}
public bool GetInOperator(out InOpDeclaration op, String name, VariableType lhs, VariableType rhs)
{
op = null;
var lookup = Operators.FirstOrDefault(opdecl => opdecl.Value.Type == ASTNodeType.InfixOperator && opdecl.Value.OperatorKeyword == name &&
(opdecl.Value as InOpDeclaration).LeftOperand.VarType.Name.ToLower() == lhs.Name.ToLower() &&
(opdecl.Value as InOpDeclaration).RightOperand.VarType.Name.ToLower() == rhs.Name.ToLower());
if (lookup.Equals(new KeyValuePair <String, OperatorDeclaration>()))
{
return(false);
}
op = lookup.Value as InOpDeclaration;
return(true);
}
public Expression DecompileNativeFunction(ushort index)
{
var parameters = new List <Expression>();
while (!CurrentIs(OpCodes.EndFunctionParms))
{
var param = DecompileExpression();
if (param == null)
{
return(null); // ERROR
}
parameters.Add(param);
}
PopByte();
var entry = NativeTable[index];
Expression call = null;
switch (entry.Type)
{
case NativeType.Function:
var func = new SymbolReference(null, entry.Name);
call = new FunctionCall(func, parameters, null, null);
break;
case NativeType.Operator:
var op = new InOpDeclaration(entry.Name, entry.Precedence, index, null, null, null);
var opRef = new InOpReference(op, parameters[0], parameters[1]);
DecompileEnumOperatorComparisons(opRef);
call = opRef;
break;
case NativeType.PreOperator:
var preOp = new PreOpDeclaration(entry.Name, null, index, null);
call = new PreOpReference(preOp, parameters[0]);
break;
case NativeType.PostOperator:
var postOp = new PostOpDeclaration(entry.Name, null, index, null);
call = new PostOpReference(postOp, parameters[0], null, null);
break;
}
StartPositions.Pop();
return(call);
}
public Expression DecompileNativeFunction(UInt16 index)
{
var parameters = new List <Expression>();
while (!CurrentIs(StandardByteCodes.EndFunctionParms))
{
var param = DecompileExpression();
if (param == null)
{
return(null); // ERROR
}
parameters.Add(param);
}
PopByte();
var entry = NativeTable[index];
Expression call = null;
switch (entry.Type)
{
case NativeType.Function:
var func = new SymbolReference(null, null, null, entry.Name);
call = new FunctionCall(func, parameters, null, null);
break;
case NativeType.Operator: // TODO: table should hold precedence, currently all have 0 and it'll be a mess.
var op = new InOpDeclaration(entry.Name, entry.Precedence, false, null, null, null, null, null, null, null);
call = new InOpReference(op, parameters[0], parameters[1], null, null);
break;
case NativeType.PreOperator: // TODO: table should hold precedence, currently all have 0 and it'll be a mess.
var preOp = new PreOpDeclaration(entry.Name, false, null, null, null, null, null, null);
call = new PreOpReference(preOp, parameters[0], null, null);
break;
case NativeType.PostOperator: // TODO: table should hold precedence, currently all have 0 and it'll be a mess.
var postOp = new PostOpDeclaration(entry.Name, false, null, null, null, null, null, null);
call = new PostOpReference(postOp, parameters[0], null, null);
break;
}
StartPositions.Pop();
return(call);
}
public void BasicClassTest()
{
var source =
"class Test Deprecated Transient; \n" +
"var enum ETestnumeration {\n" +
" TEST_value1,\n" +
" TEST_value2,\n" +
" TEST_value3,\n" +
"} inlineNumeration, testnum2;\n" +
"var private deprecated int X; \n" +
"VAR INT Y, Z; \n" +
"var ETestnumeration testnum;\n" +
"struct transient testStruct\n" +
"{ var float a, b, c; };\n" +
"var private struct transient twoStruct extends testStruct\n" +
"{\n" +
" var etestnumeration num;\n" +
"} structA, structB;\n" +
"function float funcB( testStruct one, float two ) \n" +
"{\n" +
" local float c;" +
" one.a = 1.3 * c;" +
" while (true)" +
" {" +
" c = c - c - c;" +
" }" +
" if (false) {" +
" switch(one.a) {" +
" case one.a:" +
" c = one.a;" +
" break;" +
" case 1.2:" +
" case 1.3:" +
" c = c + 0.5;" +
" break;" +
" default:" +
" c = 6.6;" +
" }" +
" }" +
" return one.a + 0.33 * (0.66 + 0.1) * 1.5;\n" +
"}\n" +
"private simulated function float MyFunc( out testStruct one, coerce optional float two ) \n" +
"{\n" +
" return one.b + funcB(one, two);\n" +
"}\n" +
"auto state MyState\n" +
"{\n" +
"ignores MyFunc;\n" +
"function StateFunc()\n" +
"{\n" +
"}\n" +
"\n" +
"Begin:\n" +
" moredragons\n" +
"}\n" +
"\n" +
"final static operator(254) int >>>( coerce float left, coerce float right )\n" +
"{\n" +
" all the dragons\n" +
"}\n" +
"\n" +
"\n" +
"\n";
var parser = new ClassOutlineParser(new TokenStream <String>(new StringLexer(source)), log);
var symbols = new SymbolTable();
Class obj = new Class("Object", null, null, null, null, null, null, null, null, null, null);
obj.OuterClass = obj;
symbols.PushScope(obj.Name);
symbols.AddSymbol(obj.Name, obj);
VariableType integer = new VariableType("int", null, null);
symbols.AddSymbol(integer.Name, integer);
VariableType floatingpoint = new VariableType("float", null, null);
symbols.AddSymbol(floatingpoint.Name, floatingpoint);
InOpDeclaration plus_float = new InOpDeclaration("+", 20, false, null, floatingpoint, new FunctionParameter(floatingpoint, null, null, null, null),
new FunctionParameter(floatingpoint, null, null, null, null), null, null, null);
symbols.AddOperator(plus_float);
InOpDeclaration sub_float = new InOpDeclaration("-", 20, false, null, floatingpoint, new FunctionParameter(floatingpoint, null, null, null, null),
new FunctionParameter(floatingpoint, null, null, null, null), null, null, null);
symbols.AddOperator(sub_float);
InOpDeclaration mult_float = new InOpDeclaration("*", 16, false, null, floatingpoint, new FunctionParameter(floatingpoint, null, null, null, null),
new FunctionParameter(floatingpoint, null, null, null, null), null, null, null);
symbols.AddOperator(mult_float);
Class node = (Class)parser.ParseDocument();
var ClassValidator = new ClassValidationVisitor(log, symbols);
node.AcceptVisitor(ClassValidator);
symbols.GoDirectlyToStack(node.GetInheritanceString());
foreach (Function f in node.Functions)
{
symbols.PushScope(f.Name);
var p = new CodeBodyParser(new TokenStream <String>(new StringLexer(source)), f.Body, symbols, f, log);
var b = p.ParseBody();
symbols.PopScope();
}
var CodeBuilder = new CodeBuilderVisitor();
node.AcceptVisitor(CodeBuilder);
Console.Write(CodeBuilder.GetCodeString());
Assert.IsTrue(log.AllErrors.Count == 0);
return;
}
public Expression DecompileNew() // TODO: replace this ugly-ass hack with proper AST support.
{
PopByte();
var parameters = new List <Expression>();
for (int n = 0; n < 5; n++)
{
if (CurrentIs(StandardByteCodes.Nothing))
{
parameters.Add(null);
continue;
}
var param = DecompileExpression();
if (param == null)
{
return(null); // ERROR
}
parameters.Add(param);
}
Expression first = null;
if ((parameters[0] ?? parameters[1] ?? parameters[2]) != null)
{
var innerParms = new List <Expression>();
if (parameters[0] != null)
{
innerParms.Add(parameters[0]);
}
if (parameters[1] != null)
{
innerParms.Add(parameters[1]);
}
if (parameters[2] != null)
{
innerParms.Add(parameters[2]);
}
first = new FunctionCall(new SymbolReference(null, null, null, "new"), innerParms, null, null);
}
else
{
first = new SymbolReference(null, null, null, "new");
}
var second = parameters[3] ?? new SymbolReference(null, null, null, "NoClass??");
var op = new InOpDeclaration("", 0, true, null, null, null, null, null, null, null);
var firstHalf = new InOpReference(op, first, second, null, null);
StartPositions.Pop();
if (parameters[4] != null)
{
return(new InOpReference(op, firstHalf, parameters[4], null, null));
}
else
{
return(firstHalf);
}
}
