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public Visit ( |
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| expression | The |
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| Результат | ||
private static void Visit(SqlExpression exp, bool equals = false)
{
var visitor = new SqlExpressionVisitor();
var result = exp.Accept(visitor);
Assert.IsType(exp.GetType(), result);
Assert.Equal(equals, result.Equals(exp));
result = visitor.Visit(exp);
Assert.IsType(exp.GetType(), result);
Assert.Equal(equals, result.Equals(exp));
}
public ExpressionParseResult ParseExpression(string text)
{
SetInput(text);
//var plSqlParser = MakeParser(text, null);
var parseResult = plSqlParser.expressionUnit();
var visitor = new SqlExpressionVisitor();
var result = visitor.Visit(parseResult);
var errors = messages.Where(x => x.Level == CompileMessageLevel.Error).Select(x => x.Text).ToArray();
if (errors.Length > 0)
return new ExpressionParseResult(errors);
return new ExpressionParseResult(result);
}
/// <summary>
/// Accepts the visit of a SQL visitor
/// </summary>
/// <param name="visitor">The <see cref="SqlExpressionVisitor"/> that is visiting
/// the expression.</param>
/// <returns>
/// Returns an instance of <see cref="SqlExpression"/> resulting from the visit
/// of the given <see cref="SqlExpressionVisitor"/>.
/// </returns>
/// <seealso cref="SqlExpressionVisitor.Visit"/>
public virtual SqlExpression Accept(SqlExpressionVisitor visitor)
{
return(visitor.Visit(this));
}
public virtual SqlExpression Accept(SqlExpressionVisitor visitor)
{
return visitor.Visit(this);
}
