public override Expression VisitAssignment([NotNull] RuleEngineParser.AssignmentContext context)
{
var leftExpression = VisitUnaryExpression(context.unaryExpression());
var rightExpression = VisitExpression(context.expression());
var operatorSign = context.assignmentOperator().GetText();
switch (operatorSign)
{
case "=":
return(Expression.Assign(leftExpression, rightExpression));
default:
throw new NotSupportedException($"Not support operator '{operatorSign}'.");
}
}
/// <summary>
/// Visit a parse tree produced by <see cref="RuleEngineParser.assignment"/>.
/// <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 VisitAssignment([NotNull] RuleEngineParser.AssignmentContext context)
{
return(VisitChildren(context));
}
