// <summary>
// Initializes identifier.
// </summary>
internal Identifier(string name, bool isEscaped, string query, int inputPos)
: base(query, inputPos)
{
// name may be empty in the case of "byte[]".
// "byte" and "[]" come in as two identifiers where second one is escaped and empty.
Debug.Assert(isEscaped || name[0] != '[', "isEscaped || name[0] != '['");
if (!isEscaped)
{
var isIdentifierASCII = true;
if (!CqlLexer.IsLetterOrDigitOrUnderscore(name, out isIdentifierASCII))
{
if (isIdentifierASCII)
{
var errCtx = ErrCtx;
var message = Strings.InvalidSimpleIdentifier(name);
throw EntitySqlException.Create(errCtx, message, null);
}
else
{
var errCtx = ErrCtx;
var message = Strings.InvalidSimpleIdentifierNonASCII(name);
throw EntitySqlException.Create(errCtx, message, null);
}
}
}
_name = name;
_isEscaped = isEscaped;
}
/// <summary>
/// Parse the specified CQL to get all statements that are inside it.
/// </summary>
/// <param name="cql">
/// The CQL contains multiple statements separated with semi-colon.
/// </param>
/// <returns>
/// List of statements.
/// </returns>
/// <exception cref="CqlException">
/// <paramref name="cql"/> contain invalid CQL.
/// </exception>
/// <remarks>
/// No semi-colon in each result statement.
/// </remarks>
public static IEnumerable <string> ParseStatements(string cql)
{
var input = new AntlrInputStream(cql);
var lexer = new CqlLexer(new CaseChangingCharStream(input, true));
var tokens = new CommonTokenStream(lexer);
var parser = new Parsing.CqlParser(tokens)
{
ErrorHandler = new BailErrorStrategy()
};
var walker = new ParseTreeWalker();
var extractor = new StatementExtractor();
try
{
walker.Walk(extractor, parser.root());
}
catch (ParseCanceledException ex)
{
var token = (ex.InnerException as RecognitionException)?.OffendingToken;
if (token == null)
{
throw;
}
throw new CqlException(token.Line, token.Column, token.Text, ex);
}
return(extractor.Statements);
}
/// <summary>
/// Initializes identifier.
/// </summary>
internal Identifier(string name, bool isEscaped, string query, int inputPos) : base(query, inputPos)
{
// name may be empty in the case of "byte[]".
// "byte" and "[]" come in as two identifiers where second one is escaped and empty.
Debug.Assert(isEscaped || name[0] != '[', "isEscaped || name[0] != '['");
if (!isEscaped)
{
bool isIdentifierASCII = true;
if (!CqlLexer.IsLetterOrDigitOrUnderscore(name, out isIdentifierASCII))
{
if (isIdentifierASCII)
{
throw EntityUtil.EntitySqlError(this.ErrCtx, System.Data.Entity.Strings.InvalidSimpleIdentifier(name));
}
else
{
throw EntityUtil.EntitySqlError(this.ErrCtx, System.Data.Entity.Strings.InvalidSimpleIdentifierNonASCII(name));
}
}
}
_name = name;
_isEscaped = isEscaped;
}
internal static string FormatErrorContext(
string commandText,
int errorPosition,
string errorContextInfo,
bool loadErrorContextInfoFromResource,
out int lineNumber,
out int columnNumber)
{
if (loadErrorContextInfoFromResource)
{
errorContextInfo = !string.IsNullOrEmpty(errorContextInfo) ? EntityRes.GetString(errorContextInfo) : string.Empty;
}
StringBuilder stringBuilder1 = new StringBuilder(commandText.Length);
for (int index = 0; index < commandText.Length; ++index)
{
char c = commandText[index];
if (CqlLexer.IsNewLine(c))
{
c = '\n';
}
else if ((char.IsControl(c) || char.IsWhiteSpace(c)) && '\r' != c)
{
c = ' ';
}
stringBuilder1.Append(c);
}
commandText = stringBuilder1.ToString().TrimEnd('\n');
string[] strArray = commandText.Split(new char[1]
{
'\n'
}, StringSplitOptions.None);
lineNumber = 0;
columnNumber = errorPosition;
while (lineNumber < strArray.Length && columnNumber > strArray[lineNumber].Length)
{
columnNumber -= strArray[lineNumber].Length + 1;
++lineNumber;
}
++lineNumber;
++columnNumber;
StringBuilder stringBuilder2 = new StringBuilder();
if (!string.IsNullOrEmpty(errorContextInfo))
{
stringBuilder2.AppendFormat((IFormatProvider)CultureInfo.CurrentCulture, "{0}, ", (object)errorContextInfo);
}
if (errorPosition >= 0)
{
stringBuilder2.AppendFormat((IFormatProvider)CultureInfo.CurrentCulture, "{0} {1}, {2} {3}", (object)Strings.LocalizedLine, (object)lineNumber, (object)Strings.LocalizedColumn, (object)columnNumber);
}
return(stringBuilder2.ToString());
}
private IEnumerable <TokenChecker> GetTokens(string source)
{
var lexer = new CqlLexer(source);
var tokens = new List <TokenChecker>();
do
{
//tokens.Add(new TokenChecker { Token = lexer.CurrentToken, Value = lexer.StringValue });
tokens.Add(new TokenChecker {
Token = lexer.CurrentToken, Value = lexer.StringValue
});
}while (lexer.NextToken());
return(tokens);
}
internal Identifier(string name, bool isEscaped, string query, int inputPos)
: base(query, inputPos)
{
if (!isEscaped)
{
bool isIdentifierASCII = true;
if (!CqlLexer.IsLetterOrDigitOrUnderscore(name, out isIdentifierASCII))
{
if (isIdentifierASCII)
{
throw EntitySqlException.Create(this.ErrCtx, Strings.InvalidSimpleIdentifier((object)name), (Exception)null);
}
throw EntitySqlException.Create(this.ErrCtx, Strings.InvalidSimpleIdentifierNonASCII((object)name), (Exception)null);
}
}
this._name = name;
this._isEscaped = isEscaped;
}
public void SnQuery_Lexer_CharTypeDoesNotThrow()
{
var s = new String(Enumerable.Range(1, 256 - 32).Select(i => (char)i).ToArray());
var lexer = new CqlLexer(s);
var lexerAcc = new ObjectAccessor(lexer);
var thrown = false;
try
{
while ((bool)lexerAcc.Invoke("NextChar"))
{
;
}
}
catch (Exception) // not logged, not rethrown
{
thrown = true;
}
Assert.IsFalse(thrown);
}
internal static bool IsReservedKeyword(string name)
{
return(CqlLexer.IsReservedKeyword(name));
}
/// <summary>
/// Returns error context in the format [[errorContextInfo, ]line ddd, column ddd].
/// Returns empty string if errorPosition is less than 0 and errorContextInfo is not specified.
/// </summary>
internal static string FormatErrorContext(
string commandText,
int errorPosition,
string errorContextInfo,
bool loadErrorContextInfoFromResource,
out int lineNumber,
out int columnNumber)
{
Debug.Assert(errorPosition > -1, "position in input stream cannot be < 0");
Debug.Assert(errorPosition <= commandText.Length, "position in input stream cannot be greater than query text size");
if (loadErrorContextInfoFromResource)
{
errorContextInfo = !String.IsNullOrEmpty(errorContextInfo) ? EntityRes.GetString(errorContextInfo) : String.Empty;
}
//
// Replace control chars and newLines for single representation characters
//
StringBuilder sb = new StringBuilder(commandText.Length);
for (int i = 0; i < commandText.Length; i++)
{
Char c = commandText[i];
if (CqlLexer.IsNewLine(c))
{
c = '\n';
}
else if ((Char.IsControl(c) || Char.IsWhiteSpace(c)) && ('\r' != c))
{
c = ' ';
}
sb.Append(c);
}
commandText = sb.ToString().TrimEnd(new char[] { '\n' });
//
// Compute line and column
//
string[] queryLines = commandText.Split(new char[] { '\n' }, StringSplitOptions.None);
for (lineNumber = 0, columnNumber = errorPosition;
lineNumber < queryLines.Length && columnNumber > queryLines[lineNumber].Length;
columnNumber -= (queryLines[lineNumber].Length + 1), ++lineNumber)
{
;
}
++lineNumber; // switch lineNum and colNum to 1-based indexes
++columnNumber;
//
// Error context format: "[errorContextInfo,] line ddd, column ddd"
//
sb = new Text.StringBuilder();
if (!String.IsNullOrEmpty(errorContextInfo))
{
sb.AppendFormat(CultureInfo.CurrentCulture, "{0}, ", errorContextInfo);
}
if (errorPosition >= 0)
{
sb.AppendFormat(CultureInfo.CurrentCulture,
"{0} {1}, {2} {3}",
System.Data.Entity.Strings.LocalizedLine,
lineNumber,
System.Data.Entity.Strings.LocalizedColumn,
columnNumber);
}
return(sb.ToString());
}
