public override void Compile(EmitCompilerContext context, EmitIl il)
{
var arrayType = GetExpressionType();
if (Lengths.Count == 1)
{
il.Emit(EmitOpCodes.Ldc_I4, Lengths[0]);
il.Emit(EmitOpCodes.Newarr, Type);
for (var i = 0; i < Initializer.Length; i++)
{
var element = (EmitExpression)Initializer[i];
il.Emit(EmitOpCodes.Dup);
il.Emit(EmitOpCodes.Ldc_I4, i);
element.Compile(context, il);
il.Emit(EmitOpCodes.Stelem, Type);
}
}
else
{
var constructor = arrayType.Members.OfType <EmitConstructor>().Single(x => x.Parameters.Count() == Rank);
var setter = arrayType.Members.OfType <EmitMethod>().Single(x => x.Name == "Set");
foreach (var length in Lengths)
{
il.Emit(EmitOpCodes.Ldc_I4, length);
}
il.Emit(EmitOpCodes.Newobj, constructor);
var indices = new int[Lengths.Count];
Action <int, IEmitArrayElement> recurse = null;
recurse = (level, element) =>
{
if (level == Rank - 1)
{
var expression = (EmitExpression)element;
il.Emit(EmitOpCodes.Dup);
foreach (var index in indices)
{
il.Emit(EmitOpCodes.Ldc_I4, index);
}
expression.Compile(context, il);
il.Emit(EmitOpCodes.Call, setter);
}
else
{
for (var i = 0; i < element.Length; i++)
{
indices[level + 1] = i;
var current = element[i];
recurse(level + 1, current);
}
}
};
for (var i = 0; i < Initializer.Length; i++)
{
var element = Initializer[i];
indices[0] = i;
recurse(0, element);
}
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Condition.Compile(context, il);
var ifNotTrue = il.DefineLabel();
il.Emit(EmitOpCodes.Brfalse, ifNotTrue);
Statement.Compile(context, il);
var statementReturned = il.Instructions.Last().OpCode == EmitOpCodes.Ret;
if (Else != null)
{
EmitLabel end = null;
if (!statementReturned)
{
end = il.DefineLabel();
il.Emit(EmitOpCodes.Br, end);
}
il.MarkLabel(ifNotTrue);
Else.Compile(context, il);
if (!statementReturned)
{
il.MarkLabel(end);
il.Emit(EmitOpCodes.Nop);
}
}
else
{
il.MarkLabel(ifNotTrue);
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
switch (Operator)
{
case EmitBinaryOperator.Assign:
((IEmitReferenceExpression)Left).CompileAssignment(context, il, () => Right.Compile(context, il));
break;
case EmitBinaryOperator.BooleanAnd:
Left.Compile(context, il);
il.Emit(EmitOpCodes.Dup);
var andEnd = il.DefineLabel();
il.Emit(EmitOpCodes.Brfalse, andEnd);
il.Emit(EmitOpCodes.Pop);
Right.Compile(context, il);
il.MarkLabel(andEnd);
break;
case EmitBinaryOperator.BooleanOr:
Left.Compile(context, il);
il.Emit(EmitOpCodes.Dup);
var orEnd = il.DefineLabel();
il.Emit(EmitOpCodes.Brtrue, orEnd);
il.Emit(EmitOpCodes.Pop);
Right.Compile(context, il);
il.MarkLabel(orEnd);
break;
default:
var instruction = GetOpCode();
var isInverted = IsOperatorInverse();
var isAssignment = IsOperatorAssignment();
Left.Compile(context, il);
Right.Compile(context, il);
il.Emit(instruction);
if (isInverted)
{
il.Emit(EmitOpCodes.Ldc_I4_0);
il.Emit(EmitOpCodes.Ceq);
}
if (isAssignment)
{
var local = il.DeclareLocal(typeof(bool));
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Left).CompileAssignment(context, il, () => il.Emit(EmitOpCodes.Ldloc, local));
}
break;
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Condition.Compile(context, il);
var ifNotTrue = il.DefineLabel();
il.Emit(EmitOpCodes.Brfalse, ifNotTrue);
Statement.Compile(context, il);
var statementReturned = il.Instructions.Last().OpCode == EmitOpCodes.Ret;
if (Else != null)
{
EmitLabel end = null;
if (!statementReturned)
{
end = il.DefineLabel();
il.Emit(EmitOpCodes.Br, end);
}
il.MarkLabel(ifNotTrue);
Else.Compile(context, il);
if (!statementReturned)
{
il.MarkLabel(end);
il.Emit(EmitOpCodes.Nop);
}
}
else
{
il.MarkLabel(ifNotTrue);
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Initializer?.Compile(context, il);
var start = il.DefineLabel();
var end = il.DefineLabel();
il.MarkLabel(start);
if (Predicate != null)
{
Predicate.Compile(context, il);
}
else
{
il.Emit(EmitOpCodes.Ldc_I4_1);
}
il.Emit(EmitOpCodes.Brfalse, end);
Body.Compile(context, il);
Incrementor?.Compile(context, il);
il.Emit(EmitOpCodes.Br, start);
il.MarkLabel(end);
}
public void CompileAssignment(EmitCompilerContext context, EmitIl il, Action compileValue)
{
var local = Variable.GetData(context);
compileValue();
il.Emit(EmitOpCodes.Dup); // We want to leave the assigned value on the stack, since assignment is an expression
il.Emit(EmitOpCodes.Stloc, local);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
var arrayType = GetExpressionType();
if (Lengths.Count == 1)
{
il.Emit(EmitOpCodes.Ldc_I4, Lengths[0]);
il.Emit(EmitOpCodes.Newarr, Type);
for (var i = 0; i < Initializer.Length; i++)
{
var element = (EmitExpression)Initializer[i];
il.Emit(EmitOpCodes.Dup);
il.Emit(EmitOpCodes.Ldc_I4, i);
element.Compile(context, il);
il.Emit(EmitOpCodes.Stelem, Type);
}
}
else
{
var constructor = arrayType.Members.OfType<EmitConstructor>().Single(x => x.Parameters.Count() == Rank);
var setter = arrayType.Members.OfType<EmitMethod>().Single(x => x.Name == "Set");
foreach (var length in Lengths)
il.Emit(EmitOpCodes.Ldc_I4, length);
il.Emit(EmitOpCodes.Newobj, constructor);
var indices = new int[Lengths.Count];
Action<int, IEmitArrayElement> recurse = null;
recurse = (level, element) =>
{
if (level == Rank - 1)
{
var expression = (EmitExpression)element;
il.Emit(EmitOpCodes.Dup);
foreach (var index in indices)
{
il.Emit(EmitOpCodes.Ldc_I4, index);
}
expression.Compile(context, il);
il.Emit(EmitOpCodes.Call, setter);
}
else
{
for (var i = 0; i < element.Length; i++)
{
indices[level + 1] = i;
var current = element[i];
recurse(level + 1, current);
}
}
};
for (var i = 0; i < Initializer.Length; i++)
{
var element = Initializer[i];
indices[0] = i;
recurse(0, element);
}
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
switch (Operator)
{
case EmitBinaryOperator.Assign:
((IEmitReferenceExpression)Left).CompileAssignment(context, il, () => Right.Compile(context, il));
break;
case EmitBinaryOperator.BooleanAnd:
Left.Compile(context, il);
il.Emit(EmitOpCodes.Dup);
var andEnd = il.DefineLabel();
il.Emit(EmitOpCodes.Brfalse, andEnd);
il.Emit(EmitOpCodes.Pop);
Right.Compile(context, il);
il.MarkLabel(andEnd);
break;
case EmitBinaryOperator.BooleanOr:
Left.Compile(context, il);
il.Emit(EmitOpCodes.Dup);
var orEnd = il.DefineLabel();
il.Emit(EmitOpCodes.Brtrue, orEnd);
il.Emit(EmitOpCodes.Pop);
Right.Compile(context, il);
il.MarkLabel(orEnd);
break;
default:
var instruction = GetOpCode();
var isInverted = IsOperatorInverse();
var isAssignment = IsOperatorAssignment();
Left.Compile(context, il);
Right.Compile(context, il);
il.Emit(instruction);
if (isInverted)
{
il.Emit(EmitOpCodes.Ldc_I4_0);
il.Emit(EmitOpCodes.Ceq);
}
if (isAssignment)
{
var local = il.DeclareLocal(typeof(bool));
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Left).CompileAssignment(context, il, () => il.Emit(EmitOpCodes.Ldloc, local));
}
break;
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Expression.Compile(context, il);
var expressionType = Expression.GetExpressionType();
EmitType voidType = typeof(void);
if (expressionType.IsValueType && !context.Method.ReturnType.IsValueType && !Equals(expressionType, voidType))
{
il.Emit(EmitOpCodes.Box, Expression.GetExpressionType());
}
// else if (!Expression.GetType(context.TypeSystem).IsValueType && !context.Method.ReturnType.IsValueType)
// {
//
// }
il.Emit(EmitOpCodes.Ret);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Value == null)
{
il.Emit(EmitOpCodes.Ldnull);
}
else if (Value is int)
{
il.Emit(EmitOpCodes.Ldc_I4, (int)Value);
}
else if (Value is long)
{
il.Emit(EmitOpCodes.Ldc_I8, (long)Value);
}
else if (Value is float)
{
il.Emit(EmitOpCodes.Ldc_R4, (float)Value);
}
else if (Value is double)
{
il.Emit(EmitOpCodes.Ldc_R8, (double)Value);
}
else if (Value is bool)
{
il.Emit(EmitOpCodes.Ldc_I4, (bool)Value ? 1 : 0);
}
else if (Value is string)
{
il.Emit(EmitOpCodes.Ldstr, (string)Value);
}
else
{
throw new Exception();
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Lengths.Count == 1)
{
Lengths[0].Compile(context, il);
il.Emit(EmitOpCodes.Newarr, Type);
}
else
{
var arrayType = GetExpressionType();
var constructor = arrayType.Members.OfType <EmitConstructor>().Single(x => x.Parameters.Count() == Lengths.Count);
foreach (var length in Lengths)
{
length.Compile(context, il);
}
il.Emit(EmitOpCodes.Newobj, constructor);
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Expression.Compile(context, il);
var expressionType = Expression.GetExpressionType();
EmitType voidType = typeof(void);
if (expressionType.IsValueType && !context.Method.ReturnType.IsValueType && !Equals(expressionType, voidType))
{
il.Emit(EmitOpCodes.Box, Expression.GetExpressionType());
}
// else if (!Expression.GetType(context.TypeSystem).IsValueType && !context.Method.ReturnType.IsValueType)
// {
//
// }
il.Emit(EmitOpCodes.Ret);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Lengths.Count == 1)
{
Lengths[0].Compile(context, il);
il.Emit(EmitOpCodes.Newarr, Type);
}
else
{
var arrayType = GetExpressionType();
var constructor = arrayType.Members.OfType<EmitConstructor>().Single(x => x.Parameters.Count() == Lengths.Count);
foreach (var length in Lengths)
{
length.Compile(context, il);
}
il.Emit(EmitOpCodes.Newobj, constructor);
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
// Special handling for value types without a constructor
if (Constructor == null)
{
var local = il.DeclareLocal(Type);
il.Emit(EmitOpCodes.Ldloca, local);
il.Emit(EmitOpCodes.Initobj, Type);
il.Emit(EmitOpCodes.Ldloc, local);
return;
}
foreach (var argument in Arguments)
{
argument.Compile(context, il);
}
il.Emit(EmitOpCodes.Newobj, Constructor);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
// Special handling for value types without a constructor
if (Constructor == null)
{
var local = il.DeclareLocal(Type);
il.Emit(EmitOpCodes.Ldloca, local);
il.Emit(EmitOpCodes.Initobj, Type);
il.Emit(EmitOpCodes.Ldloc, local);
return;
}
foreach (var argument in Arguments)
{
argument.Compile(context, il);
}
il.Emit(EmitOpCodes.Newobj, Constructor);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
var item = il.DeclareLocal(Item.Type);
Item.SetData(context, item);
EmitType genericEnumerableType = typeof(IEnumerable <>);
var enumerableType = genericEnumerableType.MakeGenericType(Item.Type);
var getEnumeratorMethod = enumerableType.Members.OfType <EmitMethod>().Single(x => x.Name == nameof(IEnumerable <object> .GetEnumerator));
EmitType genericEnumeratorType = typeof(IEnumerator <>);
var enumeratorType = genericEnumeratorType.MakeGenericType(Item.Type);
var moveNextMethod = enumerableType.Members.OfType <EmitMethod>().Single(x => x.Name == nameof(IEnumerator <object> .MoveNext));
var getCurrentMethod = enumerableType.Members.OfType <EmitProperty>().Single(x => x.Name == nameof(IEnumerator <object> .Current)).GetMethod;
var enumerator = il.DeclareLocal(enumeratorType);
Collection.Compile(context, il);
il.Emit(EmitOpCodes.Callvirt, getEnumeratorMethod);
il.Emit(EmitOpCodes.Stloc, enumerator);
var topOfLoop = il.DefineLabel();
var end = il.DefineLabel();
il.MarkLabel(topOfLoop);
il.Emit(EmitOpCodes.Ldloc, enumerator);
il.Emit(EmitOpCodes.Callvirt, moveNextMethod);
il.Emit(EmitOpCodes.Brfalse, end);
il.Emit(EmitOpCodes.Ldloc, enumerator);
il.Emit(EmitOpCodes.Callvirt, getCurrentMethod);
il.Emit(EmitOpCodes.Stloc, item);
Statement.Compile(context, il);
il.Emit(EmitOpCodes.Br, topOfLoop);
il.MarkLabel(end);
il.Emit(EmitOpCodes.Nop);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Arguments.Count != Method.Parameters.Count())
throw new Exception($"Incorrect number of arguments passed to method {Method}");
Target?.Compile(context, il);
foreach (var argument in Arguments)
argument.Compile(context, il);
var opCode = Method.IsVirtual || Method.DeclaringType.IsInterface ? (IEmitOpCodeMethod)EmitOpCodes.Callvirt : EmitOpCodes.Call;
il.Emit(opCode, Method);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
var item = il.DeclareLocal(Item.Type);
Item.SetData(context, item);
EmitType genericEnumerableType = typeof(IEnumerable<>);
var enumerableType = genericEnumerableType.MakeGenericType(Item.Type);
var getEnumeratorMethod = enumerableType.Members.OfType<EmitMethod>().Single(x => x.Name == nameof(IEnumerable<object>.GetEnumerator));
EmitType genericEnumeratorType = typeof(IEnumerator<>);
var enumeratorType = genericEnumeratorType.MakeGenericType(Item.Type);
var moveNextMethod = enumerableType.Members.OfType<EmitMethod>().Single(x => x.Name == nameof(IEnumerator<object>.MoveNext));
var getCurrentMethod = enumerableType.Members.OfType<EmitProperty>().Single(x => x.Name == nameof(IEnumerator<object>.Current)).GetMethod;
var enumerator = il.DeclareLocal(enumeratorType);
Collection.Compile(context, il);
il.Emit(EmitOpCodes.Callvirt, getEnumeratorMethod);
il.Emit(EmitOpCodes.Stloc, enumerator);
var topOfLoop = il.DefineLabel();
var end = il.DefineLabel();
il.MarkLabel(topOfLoop);
il.Emit(EmitOpCodes.Ldloc, enumerator);
il.Emit(EmitOpCodes.Callvirt, moveNextMethod);
il.Emit(EmitOpCodes.Brfalse, end);
il.Emit(EmitOpCodes.Ldloc, enumerator);
il.Emit(EmitOpCodes.Callvirt, getCurrentMethod);
il.Emit(EmitOpCodes.Stloc, item);
Statement.Compile(context, il);
il.Emit(EmitOpCodes.Br, topOfLoop);
il.MarkLabel(end);
il.Emit(EmitOpCodes.Nop);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Arguments.Count != Method.Parameters.Count())
{
throw new Exception($"Incorrect number of arguments passed to method {Method}");
}
Target?.Compile(context, il);
foreach (var argument in Arguments)
{
argument.Compile(context, il);
}
var opCode = Method.IsVirtual || Method.DeclaringType.IsInterface ? (IEmitOpCodeMethod)EmitOpCodes.Callvirt : EmitOpCodes.Call;
il.Emit(opCode, Method);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
if (Value == null)
il.Emit(EmitOpCodes.Ldnull);
else if (Value is int)
il.Emit(EmitOpCodes.Ldc_I4, (int)Value);
else if (Value is long)
il.Emit(EmitOpCodes.Ldc_I8, (long)Value);
else if (Value is float)
il.Emit(EmitOpCodes.Ldc_R4, (float)Value);
else if (Value is double)
il.Emit(EmitOpCodes.Ldc_R8, (double)Value);
else if (Value is bool)
il.Emit(EmitOpCodes.Ldc_I4, (bool)Value ? 1 : 0);
else if (Value is string)
il.Emit(EmitOpCodes.Ldstr, (string)Value);
else
throw new Exception();
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Expression.Compile(context, il);
il.Emit(EmitOpCodes.Pop);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Operand.Compile(context, il);
var operandType = Operand.GetExpressionType();
EmitType typeInt = typeof(int);
EmitType typeUint = typeof(uint);
EmitType typeShort = typeof(short);
EmitType typeUshort = typeof(ushort);
EmitType typeByte = typeof(byte);
EmitType typeSbyte = typeof(sbyte);
EmitType typeLong = typeof(long);
EmitType typeUlong = typeof(ulong);
EmitType typeDouble = typeof(double);
EmitType typeFloat = typeof(float);
EmitType typeDecimal = typeof(decimal);
EmitType typeBool = typeof(bool);
var typeIs32Bit = Equals(Type, typeByte) || Equals(Type, typeShort) || Equals(Type, typeInt) || Equals(Type, typeSbyte) || Equals(Type, typeUshort) || Equals(Type, typeUint);
var operandIs32Bit = Equals(operandType, typeByte) || Equals(operandType, typeShort) || Equals(operandType, typeInt) || Equals(operandType, typeSbyte) || Equals(operandType, typeUshort) || Equals(operandType, typeUint);
var typeIsFloatingPoint = Equals(Type, typeFloat) || Equals(Type, typeDouble);
var operandIsFloatingPoint = Equals(operandType, typeFloat) || Equals(operandType, typeDouble);
if (operandIs32Bit || operandIsFloatingPoint || Equals(operandType, typeLong))
{
if (Equals(Type, operandType))
{
return;
}
if (Equals(Type, typeFloat))
{
il.Emit(EmitOpCodes.Conv_R4);
return;
}
if (Equals(Type, typeDouble))
{
il.Emit(EmitOpCodes.Conv_R8);
return;
}
if (Equals(Type, typeByte))
{
il.Emit(EmitOpCodes.Conv_U1);
return;
}
if (Equals(Type, typeSbyte))
{
il.Emit(EmitOpCodes.Conv_I1);
return;
}
if (Equals(Type, typeShort))
{
il.Emit(EmitOpCodes.Conv_I2);
return;
}
if (Equals(Type, typeUshort))
{
il.Emit(EmitOpCodes.Conv_U2);
return;
}
if (Equals(Type, typeInt))
{
il.Emit(EmitOpCodes.Conv_I4);
return;
}
if (Equals(Type, typeUint))
{
il.Emit(EmitOpCodes.Conv_U4);
return;
}
if (Equals(Type, typeLong))
{
il.Emit(EmitOpCodes.Conv_I8);
return;
}
if (Equals(Type, typeUlong))
{
il.Emit(EmitOpCodes.Conv_U8);
return;
}
}
// All else fails, then:
il.Emit(EmitOpCodes.Castclass, Type);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
switch (Operator)
{
case EmitUnaryOperator.BooleanNot:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_0);
il.Emit(EmitOpCodes.Ceq);
break;
case EmitUnaryOperator.BitwiseNot:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Not);
break;
case EmitUnaryOperator.Minus:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Neg);
break;
case EmitUnaryOperator.Plus:
Operand.Compile(context, il);
break;
case EmitUnaryOperator.PostfixDecrement:
{
Operand.Compile(context, il);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Sub);
});
il.Emit(EmitOpCodes.Pop);
il.Emit(EmitOpCodes.Ldloc, local);
break;
}
case EmitUnaryOperator.PostfixIncrement:
{
Operand.Compile(context, il);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Add);
});
il.Emit(EmitOpCodes.Pop);
il.Emit(EmitOpCodes.Ldloc, local);
break;
}
case EmitUnaryOperator.PrefixDecrement:
{
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Sub);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
});
break;
}
case EmitUnaryOperator.PrefixIncrement:
{
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Add);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
});
break;
}
}
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
var local = Variable.GetData(context);
il.Emit(EmitOpCodes.Ldloc, local);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Expression.Compile(context, il);
il.Emit(EmitOpCodes.Pop);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
Operand.Compile(context, il);
var operandType = Operand.GetExpressionType();
EmitType typeInt = typeof(int);
EmitType typeUint = typeof(uint);
EmitType typeShort = typeof(short);
EmitType typeUshort = typeof(ushort);
EmitType typeByte = typeof(byte);
EmitType typeSbyte = typeof(sbyte);
EmitType typeLong = typeof(long);
EmitType typeUlong = typeof(ulong);
EmitType typeDouble = typeof(double);
EmitType typeFloat = typeof(float);
EmitType typeDecimal = typeof(decimal);
EmitType typeBool = typeof(bool);
var typeIs32Bit = Equals(Type, typeByte) || Equals(Type, typeShort) || Equals(Type, typeInt) || Equals(Type, typeSbyte) || Equals(Type, typeUshort) || Equals(Type, typeUint);
var operandIs32Bit = Equals(operandType, typeByte) || Equals(operandType, typeShort) || Equals(operandType, typeInt) || Equals(operandType, typeSbyte) || Equals(operandType, typeUshort) || Equals(operandType, typeUint);
var typeIsFloatingPoint = Equals(Type, typeFloat) || Equals(Type, typeDouble);
var operandIsFloatingPoint = Equals(operandType, typeFloat) || Equals(operandType, typeDouble);
if (operandIs32Bit || operandIsFloatingPoint || Equals(operandType, typeLong))
{
if (Equals(Type, operandType))
{
return;
}
if (Equals(Type, typeFloat))
{
il.Emit(EmitOpCodes.Conv_R4);
return;
}
if (Equals(Type, typeDouble))
{
il.Emit(EmitOpCodes.Conv_R8);
return;
}
if (Equals(Type, typeByte))
{
il.Emit(EmitOpCodes.Conv_U1);
return;
}
if (Equals(Type, typeSbyte))
{
il.Emit(EmitOpCodes.Conv_I1);
return;
}
if (Equals(Type, typeShort))
{
il.Emit(EmitOpCodes.Conv_I2);
return;
}
if (Equals(Type, typeUshort))
{
il.Emit(EmitOpCodes.Conv_U2);
return;
}
if (Equals(Type, typeInt))
{
il.Emit(EmitOpCodes.Conv_I4);
return;
}
if (Equals(Type, typeUint))
{
il.Emit(EmitOpCodes.Conv_U4);
return;
}
if (Equals(Type, typeLong))
{
il.Emit(EmitOpCodes.Conv_I8);
return;
}
if (Equals(Type, typeUlong))
{
il.Emit(EmitOpCodes.Conv_U8);
return;
}
}
// All else fails, then:
il.Emit(EmitOpCodes.Castclass, Type);
}
public override void Compile(EmitCompilerContext context, EmitIl il)
{
switch (Operator)
{
case EmitUnaryOperator.BooleanNot:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_0);
il.Emit(EmitOpCodes.Ceq);
break;
case EmitUnaryOperator.BitwiseNot:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Not);
break;
case EmitUnaryOperator.Minus:
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Neg);
break;
case EmitUnaryOperator.Plus:
Operand.Compile(context, il);
break;
case EmitUnaryOperator.PostfixDecrement:
{
Operand.Compile(context, il);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Sub);
});
il.Emit(EmitOpCodes.Pop);
il.Emit(EmitOpCodes.Ldloc, local);
break;
}
case EmitUnaryOperator.PostfixIncrement:
{
Operand.Compile(context, il);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Add);
});
il.Emit(EmitOpCodes.Pop);
il.Emit(EmitOpCodes.Ldloc, local);
break;
}
case EmitUnaryOperator.PrefixDecrement:
{
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Sub);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
});
break;
}
case EmitUnaryOperator.PrefixIncrement:
{
Operand.Compile(context, il);
il.Emit(EmitOpCodes.Ldc_I4_1);
il.Emit(EmitOpCodes.Add);
var local = il.DeclareLocal(Operand.GetExpressionType());
il.Emit(EmitOpCodes.Stloc, local);
((IEmitReferenceExpression)Operand).CompileAssignment(context, il, () =>
{
il.Emit(EmitOpCodes.Ldloc, local);
});
break;
}
}
}