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Started a type checking algorithm

pull/1/head^2
David Srbecký 18 years ago
parent
466e199cca
commit
306b17db33
1 changed files with 226 additions and 6 deletions
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  1. 232
      src/AstMetodBodyBuilder.cs

232
src/AstMetodBodyBuilder.cs
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@ -31,6 +31,14 @@ namespace Decompiler @@ -31,6 +31,14 @@ namespace Decompiler
Ast.Statement astStatement = null;
try {
object type = null;
try {
type = GetType(methodDef, instr);
if (type is Cecil.TypeReference) {
type = ((Cecil.TypeReference)type).FullName;
}
} catch (NotImplementedException) {
}
object codeExpr = MakeCodeDomExpression(
methodDef,
instr,
@ -39,13 +47,14 @@ namespace Decompiler @@ -39,13 +47,14 @@ namespace Decompiler
new Ast.IdentifierExpression("arg3"));
if (codeExpr is Ast.Expression) {
if (GetNumberOfOutputs(methodDef, instr) == 1) {
codeExpr = new Ast.AssignmentExpression(
new Ast.IdentifierExpression(string.Format("expr{0:X2}", instr.Offset)),
AssignmentOperatorType.Assign,
(Ast.Expression)codeExpr
);
}
type = type ?? "object";
string name = string.Format("expr{0:X2}", instr.Offset);
Ast.LocalVariableDeclaration astLocal = new Ast.LocalVariableDeclaration(new Ast.TypeReference(type.ToString()));
astLocal.Variables.Add(new Ast.VariableDeclaration(name, (Ast.Expression)codeExpr));
astStatement = astLocal;
} else {
astStatement = new ExpressionStatement((Ast.Expression)codeExpr);
}
} else if (codeExpr is Ast.Statement) {
astStatement = (Ast.Statement)codeExpr;
}
@ -333,5 +342,216 @@ namespace Decompiler @@ -333,5 +342,216 @@ namespace Decompiler
default: throw new Exception("Unknown OpCode: " + opCode);
}
}
static object GetType(MethodDefinition methodDef, Instruction inst, params Cecil.TypeReference[] args)
{
OpCode opCode = inst.OpCode;
object operand = inst.Operand;
Ast.TypeReference operandAsTypeRef = operand is Cecil.TypeReference ? new Ast.TypeReference(((Cecil.TypeReference)operand).FullName) : null;
Instruction operandAsInstruction = operand is Instruction ? (Instruction)operand : null;
string operandAsInstructionLabel = operand is Instruction ? String.Format("IL_{0:X2}", ((Instruction)operand).Offset) : null;
Cecil.TypeReference arg1 = args.Length >= 1 ? args[0] : null;
Cecil.TypeReference arg2 = args.Length >= 2 ? args[1] : null;
Cecil.TypeReference arg3 = args.Length >= 3 ? args[2] : null;
switch(opCode.Code) {
#region Arithmetic
case Code.Add:
case Code.Add_Ovf:
case Code.Add_Ovf_Un:
case Code.Div:
case Code.Div_Un:
case Code.Mul:
case Code.Mul_Ovf:
case Code.Mul_Ovf_Un:
case Code.Rem:
case Code.Rem_Un:
case Code.Sub:
case Code.Sub_Ovf:
case Code.Sub_Ovf_Un:
case Code.And:
case Code.Xor:
case Code.Shl:
case Code.Shr:
case Code.Shr_Un: return Cecil.Constants.Int32;
case Code.Neg: return Cecil.Constants.Int32;
case Code.Not: return Cecil.Constants.Boolean;
#endregion
#region Arrays
case Code.Newarr: throw new NotImplementedException();
case Code.Ldlen: return Cecil.Constants.Int32;
case Code.Ldelem_I:
case Code.Ldelem_I1:
case Code.Ldelem_I2:
case Code.Ldelem_I4:
case Code.Ldelem_I8: return Cecil.Constants.Int32;
case Code.Ldelem_U1:
case Code.Ldelem_U2:
case Code.Ldelem_U4:
case Code.Ldelem_R4:
case Code.Ldelem_R8:
case Code.Ldelem_Ref:
case Code.Ldelem_Any:
case Code.Ldelema: throw new NotImplementedException();
case Code.Stelem_I:
case Code.Stelem_I1:
case Code.Stelem_I2:
case Code.Stelem_I4:
case Code.Stelem_I8:
case Code.Stelem_R4:
case Code.Stelem_R8:
case Code.Stelem_Ref:
case Code.Stelem_Any: return null;
#endregion
#region Branching
case Code.Br:
case Code.Brfalse:
case Code.Brtrue:
case Code.Beq:
case Code.Bge:
case Code.Bge_Un:
case Code.Bgt:
case Code.Bgt_Un:
case Code.Ble:
case Code.Ble_Un:
case Code.Blt:
case Code.Blt_Un:
case Code.Bne_Un: return null;
#endregion
#region Comparison
case Code.Ceq:
case Code.Cgt:
case Code.Cgt_Un:
case Code.Clt:
case Code.Clt_Un: return Cecil.Constants.Boolean;
#endregion
#region Conversions
case Code.Conv_I:
case Code.Conv_I1:
case Code.Conv_I2:
case Code.Conv_I4:
case Code.Conv_I8:
case Code.Conv_U:
case Code.Conv_U1:
case Code.Conv_U2:
case Code.Conv_U4:
case Code.Conv_U8:
case Code.Conv_R4:
case Code.Conv_R8:
case Code.Conv_R_Un:
case Code.Conv_Ovf_I:
case Code.Conv_Ovf_I1:
case Code.Conv_Ovf_I2:
case Code.Conv_Ovf_I4:
case Code.Conv_Ovf_I8:
case Code.Conv_Ovf_U:
case Code.Conv_Ovf_U1:
case Code.Conv_Ovf_U2:
case Code.Conv_Ovf_U4:
case Code.Conv_Ovf_U8:
case Code.Conv_Ovf_I_Un:
case Code.Conv_Ovf_I1_Un:
case Code.Conv_Ovf_I2_Un:
case Code.Conv_Ovf_I4_Un:
case Code.Conv_Ovf_I8_Un:
case Code.Conv_Ovf_U_Un:
case Code.Conv_Ovf_U1_Un:
case Code.Conv_Ovf_U2_Un:
case Code.Conv_Ovf_U4_Un:
case Code.Conv_Ovf_U8_Un: return Constants.Int32;
#endregion
#region Indirect
case Code.Ldind_I: throw new NotImplementedException();
case Code.Ldind_I1: throw new NotImplementedException();
case Code.Ldind_I2: throw new NotImplementedException();
case Code.Ldind_I4: throw new NotImplementedException();
case Code.Ldind_I8: throw new NotImplementedException();
case Code.Ldind_U1: throw new NotImplementedException();
case Code.Ldind_U2: throw new NotImplementedException();
case Code.Ldind_U4: throw new NotImplementedException();
case Code.Ldind_R4: throw new NotImplementedException();
case Code.Ldind_R8: throw new NotImplementedException();
case Code.Ldind_Ref: throw new NotImplementedException();
case Code.Stind_I: throw new NotImplementedException();
case Code.Stind_I1: throw new NotImplementedException();
case Code.Stind_I2: throw new NotImplementedException();
case Code.Stind_I4: throw new NotImplementedException();
case Code.Stind_I8: throw new NotImplementedException();
case Code.Stind_R4: throw new NotImplementedException();
case Code.Stind_R8: throw new NotImplementedException();
case Code.Stind_Ref: throw new NotImplementedException();
#endregion
case Code.Arglist: throw new NotImplementedException();
case Code.Box: throw new NotImplementedException();
case Code.Break: throw new NotImplementedException();
case Code.Call: return ((MethodReference)operand).ReturnType.ReturnType;
case Code.Calli: throw new NotImplementedException();
case Code.Callvirt: throw new NotImplementedException();
case Code.Castclass: throw new NotImplementedException();
case Code.Ckfinite: throw new NotImplementedException();
case Code.Constrained: throw new NotImplementedException();
case Code.Cpblk: throw new NotImplementedException();
case Code.Cpobj: throw new NotImplementedException();
case Code.Dup: throw new NotImplementedException();
case Code.Endfilter: throw new NotImplementedException();
case Code.Endfinally: throw new NotImplementedException();
case Code.Initblk: throw new NotImplementedException();
case Code.Initobj: throw new NotImplementedException();
case Code.Isinst: throw new NotImplementedException();
case Code.Jmp: throw new NotImplementedException();
case Code.Ldarg: return ((ParameterDefinition)operand).ParameterType;
case Code.Ldarga: throw new NotImplementedException();
case Code.Ldc_I4: return Cecil.Constants.Int16;
case Code.Ldc_I8: return Cecil.Constants.Int64;
case Code.Ldc_R4: return Cecil.Constants.Single;
case Code.Ldc_R8: return Cecil.Constants.Double;
case Code.Ldfld: throw new NotImplementedException();
case Code.Ldflda: throw new NotImplementedException();
case Code.Ldftn: throw new NotImplementedException();
case Code.Ldloc: return ((VariableDefinition)operand).VariableType;
case Code.Ldloca: throw new NotImplementedException();
case Code.Ldnull: return Cecil.Constants.Object;
case Code.Ldobj: throw new NotImplementedException();
case Code.Ldsfld: throw new NotImplementedException();
case Code.Ldsflda: throw new NotImplementedException();
case Code.Ldstr: return Cecil.Constants.String;
case Code.Ldtoken: throw new NotImplementedException();
case Code.Ldvirtftn: throw new NotImplementedException();
case Code.Leave: throw new NotImplementedException();
case Code.Localloc: throw new NotImplementedException();
case Code.Mkrefany: throw new NotImplementedException();
case Code.Newobj: throw new NotImplementedException();
case Code.No: throw new NotImplementedException();
case Code.Nop: return null;
case Code.Or: throw new NotImplementedException();
case Code.Pop: throw new NotImplementedException();
case Code.Readonly: throw new NotImplementedException();
case Code.Refanytype: throw new NotImplementedException();
case Code.Refanyval: throw new NotImplementedException();
case Code.Ret: return null;
case Code.Rethrow: throw new NotImplementedException();
case Code.Sizeof: throw new NotImplementedException();
case Code.Starg: throw new NotImplementedException();
case Code.Stfld: throw new NotImplementedException();
case Code.Stloc: return null;
case Code.Stobj: throw new NotImplementedException();
case Code.Stsfld: throw new NotImplementedException();
case Code.Switch: throw new NotImplementedException();
case Code.Tail: throw new NotImplementedException();
case Code.Throw: throw new NotImplementedException();
case Code.Unaligned: throw new NotImplementedException();
case Code.Unbox: throw new NotImplementedException();
case Code.Unbox_Any: throw new NotImplementedException();
case Code.Volatile: throw new NotImplementedException();
default: throw new Exception("Unknown OpCode: " + opCode);
}
}
}
}

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