public override object VisitAddExpression([NotNull] TinyScriptParser.AddExpressionContext context)
{
var a = VisitMulExpression(context.mulExpression(0));
for (int i = 1; i < context.ChildCount; i += 2)
{
var op = context.GetChild(i).GetText();
var b = VisitMulExpression((TinyScriptParser.MulExpressionContext)context.GetChild(i + 1));
switch (op)
{
case "+":
if (a is string || b is string)
{
a = a.ToString() + b.ToString();
}
else
{
a = (decimal)a + (decimal)b;
}
break;
case "-":
a = (decimal)a - (decimal)b;
break;
}
}
return(a);
}
public override object VisitAddExpression([NotNull] TinyScriptParser.AddExpressionContext context)
{
var ret = (Type)VisitMulExpression(context.mulExpression(0));
if (context.ChildCount > 1)
{
Type typeAdd = null;
for (int i = 1; i < context.ChildCount; i += 2)
{
var op = context.GetChild(i).GetText();
var t2 = (Type)VisitMulExpression((TinyScriptParser.MulExpressionContext)context.GetChild(i + 1));
typeAdd = ret == typeof(string) ? ret : GetOpType(context, ret, t2);
if (ret == typeof(string) && t2.IsValueType)
{
_builder.Box(t2);
}
var b = OpBuilder.GetOpBuilder(typeAdd, context, _builder);
b.ProcessAdd(op);
}
return(typeAdd);
}
return(ret);
}
/// <summary>
/// Visit a parse tree produced by <see cref="TinyScriptParser.addExpression"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitAddExpression([NotNull] TinyScriptParser.AddExpressionContext context)
{
return(VisitChildren(context));
}
