public override BaseNode VisitAddSubExp(SaneParser.AddSubExpContext context)
{
var left = Visit(context.left) as ExprNode;
var right = Visit(context.right) as ExprNode;
if (left == null)
{
AddError(Error.ErrorLevel.Error, context.Start, "Left expression not detected");
}
if (right == null)
{
AddError(Error.ErrorLevel.Error, context.Start, "Right expression not detected");
}
return(new BinaryExprNode
{
Id = context.operation.Text,
Left = left,
Right = right,
Token = context.Start
});
}
/// <summary>
/// Exit a parse tree produced by the <c>addSubExp</c>
/// labeled alternative in <see cref="SaneParser.expression"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitAddSubExp([NotNull] SaneParser.AddSubExpContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>addSubExp</c>
/// labeled alternative in <see cref="SaneParser.expression"/>.
/// <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 VisitAddSubExp([NotNull] SaneParser.AddSubExpContext context)
{
return(VisitChildren(context));
}