public static PostfixOperator Create(Expression expression, string symbol, Type.Expression type = null)
{
PostfixOperator result;
switch (symbol)
{
default:
result = null;
break;
case "++":
case "--":
result = new PostfixOperator(expression, symbol, type);
break;
}
return(result);
}
public static BinaryConvertResult PostfixConvertResult(Expression lop, Expression rop,
PostfixOperator op)
{
BinaryConvertResult res = new BinaryConvertResult();
switch (op)
{
case PostfixOperator.REF:
case PostfixOperator.DOT:
Symbols.Type t = lop.GetType() is Symbols.POINTER && op == PostfixOperator.REF?
((Symbols.POINTER)lop.GetType()).GetRefType() : lop.GetType();
if (!(t is Symbols.RECORD))
{
throw new Symbols.Exception(lop, NOT_STRUCT);
}
if (!((Symbols.RECORD)t).GetTable().ContainsVariable(((Identifier)rop).GetName()))
{
throw new Symbols.Exception(rop,
string.Format(NOT_MEMBER, ((Identifier)rop).GetName(), t.GetName())
);
}
res.lvalue = true;
res.type = (((Symbols.RECORD)t).GetTable().GetVariable(((Identifier)rop).GetName())).GetType();
break;
case PostfixOperator.INDEX:
if (!(lop.GetType() is Symbols.POINTER))
{
throw new Symbols.Exception(lop, NOT_POINTER);
}
if (!rop.GetType().IsInteger())
{
throw new Symbols.Exception(rop, NOT_INTEGER);
}
res.lvalue = true;
res.type = ((Symbols.RefType)lop.GetType()).GetRefType();
break;
}
res.left = lop;
res.right = rop;
return(res);
}
public virtual void Visit(PostfixOperator unaryOperator)
{
Visit(( dynamic )(unaryOperator));
}
public static BinaryConvertResult PostfixConvertResult(Expression lop, Expression rop,
PostfixOperator op)
{
BinaryConvertResult res = new BinaryConvertResult();
switch (op)
{
case PostfixOperator.REF:
case PostfixOperator.DOT:
Symbols.Type t = lop.GetType() is Symbols.POINTER && op == PostfixOperator.REF?
((Symbols.POINTER)lop.GetType()).GetRefType() : lop.GetType();
if (!(t is Symbols.RECORD))
{
throw new Symbols.Exception(lop, NOT_STRUCT);
}
if (!((Symbols.RECORD)t).GetTable().ContainsVariable(((Identifier)rop).GetName()))
{
throw new Symbols.Exception(rop,
string.Format(NOT_MEMBER, ((Identifier)rop).GetName(), t.GetName())
);
}
res.lvalue = true;
res.type = (((Symbols.RECORD)t).GetTable().GetVariable(((Identifier)rop).GetName())).GetType();
break;
case PostfixOperator.INDEX:
if (!(lop.GetType() is Symbols.POINTER))
{
throw new Symbols.Exception(lop, NOT_POINTER);
}
if (!rop.GetType().IsInteger())
{
throw new Symbols.Exception(rop, NOT_INTEGER);
}
res.lvalue = true;
res.type = ((Symbols.RefType)lop.GetType()).GetRefType();
break;
}
res.left = lop;
res.right = rop;
return res;
}
