public override Node VisitInfixRelationalExpr(ML4DParser.InfixRelationalExprContext context)
{
InfixExpressionNode node;
switch (context.op.Type)
{
case ML4DLexer.LTHAN:
node = new LessThanNode(context.op.Text);
break;
case ML4DLexer.GTHAN:
node = new GreaterThanNode(context.op.Text);
break;
case ML4DLexer.LETHAN:
node = new LessEqualThanNode(context.op.Text);
break;
case ML4DLexer.GETHAN:
node = new GreaterEqualThanNode(context.op.Text);
break;
case ML4DLexer.EQUALS:
node = new EqualNode(context.op.Text);
break;
case ML4DLexer.NOTEQUALS:
node = new NotEqualNode(context.op.Text);
break;
default:
throw new NotSupportedException(
$"The operator {context.op.Text}, is not a valid relational operator.");
}
node.Left = (ExpressionNode)Visit(context.left);
node.Right = (ExpressionNode)Visit(context.right);
return(node);
}
/// <summary>
/// Exit a parse tree produced by the <c>infixRelationalExpr</c>
/// labeled alternative in <see cref="ML4DParser.bool_expr"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitInfixRelationalExpr([NotNull] ML4DParser.InfixRelationalExprContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>infixRelationalExpr</c>
/// labeled alternative in <see cref="ML4DParser.bool_expr"/>.
/// <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 VisitInfixRelationalExpr([NotNull] ML4DParser.InfixRelationalExprContext context)
{
return(VisitChildren(context));
}