private Expr ProcessRequires2(ExprCall e)
{
MethodDefinition mRequires = this.contractsRuntime.GetRequires();
Expr conditionExpr = e.Parameters.First();
Expr msgExpr = e.Parameters.ElementAt(1);
string conditionText = this.GetConditionString(e);
Expr conditionStringExpr = new ExprLoadConstant(this.methodInfo, conditionText);
var call = new ExprCall(this.methodInfo, mRequires, new Expr [] { conditionExpr, msgExpr, conditionStringExpr });
this.contractRequiresInfo.Add(new ContractRequiresInfo(e, call));
return(call);
}
protected override Expr VisitLoadConstant(ExprLoadConstant e)
{
this.Emit(e, () =>
{
object v = e.Value;
if (v == null)
{
return(this.il.Create(OpCodes.Ldnull));
}
Type vType = v.GetType();
TypeCode vTypeCode = Type.GetTypeCode(vType);
switch (vTypeCode)
{
case TypeCode.Int32:
int value = (int)v;
switch (value)
{
case -1:
return(this.il.Create(OpCodes.Ldc_I4_M1));
case 0:
return(this.il.Create(OpCodes.Ldc_I4_0));
case 1:
return(this.il.Create(OpCodes.Ldc_I4_1));
case 2:
return(this.il.Create(OpCodes.Ldc_I4_2));
case 3:
return(this.il.Create(OpCodes.Ldc_I4_3));
case 4:
return(this.il.Create(OpCodes.Ldc_I4_4));
case 5:
return(this.il.Create(OpCodes.Ldc_I4_5));
case 6:
return(this.il.Create(OpCodes.Ldc_I4_6));
case 7:
return(this.il.Create(OpCodes.Ldc_I4_7));
case 8:
return(this.il.Create(OpCodes.Ldc_I4_8));
default:
if (value >= -128 && value <= 127)
{
return(this.il.Create(OpCodes.Ldc_I4_S, (sbyte)value));
}
else
{
return(this.il.Create(OpCodes.Ldc_I4, value));
}
}
// Required due to bug in compiler
throw new NotSupportedException();
case TypeCode.Single:
return(this.il.Create(OpCodes.Ldc_R4, (float)v));
case TypeCode.Double:
return(this.il.Create(OpCodes.Ldc_R8, (double)v));
case TypeCode.String:
return(this.il.Create(OpCodes.Ldstr, (string)v));
default:
throw new NotSupportedException("Cannot handle constant: " + vTypeCode);
}
// Required due to bug in compiler
throw new NotSupportedException();
});
return(e);
}
protected virtual Expr VisitLoadConstant (ExprLoadConstant e)
{
return e;
}