public override IType VisitExpression([NotNull] FAILangParser.ExpressionContext context)
{
var type = context.type();
var name = context.name();
var op = context.op;
var prefix = context.prefix();
var cond = context.cond();
var callparams = context.callparams();
var lambda = context.lambda();
var union = context.union();
var indexer = context.indexer();
if (type != null)
{
return(VisitType(type));
}
else if (name != null)
{
return(VisitName(name));
}
else if (op != null)
{
var exprs = context.expression();
Operator oper = Operator.MULTIPLY;
switch (op.Text)
{
case "+":
oper = Operator.ADD;
break;
case "-":
oper = Operator.SUBTRACT;
break;
case "*":
oper = Operator.MULTIPLY;
break;
case "":
oper = Operator.MULTIPLY;
break;
case "/":
oper = Operator.DIVIDE;
break;
case "%":
oper = Operator.MODULO;
break;
case "^":
oper = Operator.EXPONENT;
break;
case "=":
oper = Operator.EQUALS;
break;
case "~=":
oper = Operator.NOT_EQUALS;
break;
case ">":
oper = Operator.GREATER;
break;
case "<":
oper = Operator.LESS;
break;
case ">=":
oper = Operator.GR_EQUAL;
break;
case "<=":
oper = Operator.LE_EQUAL;
break;
}
return(new OperatorExpression(oper, VisitExpression(exprs[0]), VisitExpression(exprs[1])));
}
else if (prefix != null)
{
Prefix pre = Prefix.NOT;
switch (prefix.GetText())
{
case "~":
pre = Prefix.NOT;
break;
case "-":
pre = Prefix.NEGATIVE;
break;
}
return(new PrefixExpression(pre, VisitExpression(context.expression(0))));
}
else if (cond != null)
{
return(VisitCond(cond));
}
else if (callparams != null)
{
return(new FunctionExpression(VisitExpression(context.expression(0)),
callparams.arg()
.Select(x => (VisitExpression(x.expression()), x.elipsis != null)).ToArray()));
}
else if (lambda != null)
{
return(VisitLambda(lambda));
}
else if (union != null)
{
return(VisitUnion(union));
}
else if (indexer != null)
{
IType l_expr = null;
if (indexer.l_index != null)
{
l_expr = VisitExpression(indexer.l_index);
}
IType r_expr = null;
if (indexer.r_index != null)
{
r_expr = VisitExpression(indexer.r_index);
}
return(new IndexerExpression(VisitExpression(context.expression(0)), l_expr, r_expr, indexer.elipsis != null));
}
return(VisitExpression(context.expression(0)));
}
public override IType VisitExpression([NotNull] FAILangParser.ExpressionContext context)
{
return(VisitWhere(context.where ()));
}
