private static System.Data.Entity.Core.Common.EntitySql.AST.Node Parse(
string commandText,
ParserOptions parserOptions)
{
Check.NotEmpty(commandText, nameof(commandText));
System.Data.Entity.Core.Common.EntitySql.AST.Node node = new CqlParser(parserOptions, true).Parse(commandText);
if (node == null)
{
throw EntitySqlException.Create(commandText, Strings.InvalidEmptyQuery, 0, (string)null, false, (Exception)null);
}
return(node);
}
// <summary>
// Parse eSQL command string into an AST
// </summary>
// <param name="commandText"> eSQL command </param>
// <param name="parserOptions">
// parser options <seealso cref="ParserOptions" />
// </param>
// <returns> Ast </returns>
// <exception cref="System.Data.Entity.Core.EntityException">Thrown when Syntatic or Semantic rules are violated and the query cannot be accepted</exception>
// <remarks>
// This method is not thread safe.
// </remarks>
// <seealso cref="ParserOptions" />
private static Node Parse(string commandText, ParserOptions parserOptions)
{
// The common practice is to make the null check at the public surface,
// however this method is a convergence zone from multiple public entry points and it makes sense to
// check for null once, here.
Check.NotEmpty(commandText, "commandText");
//
// Create Parser
//
var cqlParser = new CqlParser(parserOptions, true);
//
// Invoke parser
//
var astExpr = cqlParser.Parse(commandText);
if (null == astExpr)
{
throw EntitySqlException.Create(commandText, Strings.InvalidEmptyQuery, 0, null, false, null);
}
return(astExpr);
}