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// Copyright © 2008, 2010, Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using Microsoft.VisualStudio.Package;
using System.Collections.Generic;
namespace MySql.Data.VisualStudio
{
/// <summary>
/// We don't actually need this class but we have to return a scanner object
/// from our language service or the colorizing doesn't work.
/// All the colorizing work happens in MySqlColorizer.
/// </summary>
class MySqlScanner : IScanner
{
List<string> keywords;
Tokenizer tokenizer = new Tokenizer();
List<string> lines = new List<string>();
public MySqlScanner()
{
tokenizer.ReturnComments = true;
Initialize();
}
#region IScanner Members
bool IScanner.ScanTokenAndProvideInfoAboutIt(TokenInfo tokenInfo, ref int state)
{
tokenizer.BlockComment = state == 1 ? true : false;
string token = tokenizer.NextToken();
if (token == null) return false;
token = token.Trim();
tokenInfo.StartIndex = tokenizer.StartIndex;
tokenInfo.EndIndex = tokenizer.StopIndex;
tokenInfo.Type = GetTokenType(token);
tokenInfo.Color = GetTokenColor(tokenInfo);
state = (tokenizer.BlockComment && !token.EndsWith("*/")) ? 1 : 0;
return true;
}
void IScanner.SetSource(string source, int offset)
{
tokenizer.Text = source;
}
#endregion
#region Private methods
private TokenColor GetTokenColor(TokenInfo ti)
{
switch (ti.Type)
{
case TokenType.Comment:
case TokenType.LineComment:
return TokenColor.Comment;
case TokenType.Literal:
return TokenColor.String;
case TokenType.Keyword:
return TokenColor.Keyword;
default:
return TokenColor.Text;
}
}
private TokenType GetTokenType(string token)
{
if (tokenizer.LineComment) return TokenType.Comment;
else if (tokenizer.BlockComment) return TokenType.Comment;
else if (IsKeyword(token)) return TokenType.Keyword;
else if (tokenizer.Quoted) return TokenType.Literal;
return TokenType.Text;
}
private bool IsKeyword(string token)
{
return keywords.Contains(token.ToUpperInvariant());
}
private void Initialize()
{
if (keywords != null) return;
keywords = new List<string>();
// procedures and functions
keywords.Add("CREATE");
keywords.Add("ALTER");
keywords.Add("PROCEDURE");
keywords.Add("CALL");
keywords.Add("RETURN");
keywords.Add("FUNCTION");
keywords.Add("RETURNS");
keywords.Add("DECLARE");
keywords.Add("DEFINER");
keywords.Add("CURRENT_USER");
keywords.Add("OUT");
keywords.Add("INOUT");
keywords.Add("IN");
keywords.Add("BEGIN");
keywords.Add("END");
keywords.Add("VIEW");
keywords.Add("AS");
keywords.Add("TRIGGER");
// update
keywords.Add("UPDATE");
keywords.Add("TABLE");
// delete
keywords.Add("DELETE");
// select
keywords.Add("SELECT");
keywords.Add("FROM");
keywords.Add("WHERE");
keywords.Add("GROUP");
keywords.Add("BY");
keywords.Add("ASC");
keywords.Add("DESC");
keywords.Add("WITH");
keywords.Add("ROLLUP");
keywords.Add("HAVING");
keywords.Add("ORDER");
keywords.Add("LIMIT");
keywords.Add("OFFSET");
keywords.Add("INTO");
keywords.Add("OUTFILE");
keywords.Add("DUMPFILE");
keywords.Add("FOR");
keywords.Add("LOCK");
keywords.Add("SHARE");
keywords.Add("MODE");
keywords.Add("ALL");
keywords.Add("DISTINCT");
keywords.Add("DISTINCTROW");
keywords.Add("HIGH_PRIORITY");
keywords.Add("STRAIGHT_JOIN");
keywords.Add("SQL_SMALL_RESULT");
keywords.Add("SQL_BIG_RESULT");
keywords.Add("SQL_BUFFER_RESULT");
keywords.Add("SQL_CACHE");
keywords.Add("SQL_NO_CACHE");
keywords.Add("SQL_CALC_FOUND_ROWS");
// misc
keywords.Add("SHOW");
keywords.Add("PROCESSLIST");
keywords.Add("KILL");
keywords.Add("STATUS");
// data types
keywords.Add("INT");
keywords.Add("CHAR");
keywords.Add("VARCHAR");
// functions
keywords.Add("COUNT");
keywords.Add("REPLACE");
// trigger keywords
keywords.Add("BEFORE");
keywords.Add("AFTER");
keywords.Add("INSERT");
keywords.Add("ON");
keywords.Add("EACH");
keywords.Add("ROW");
keywords.Add("SET");
}
#endregion
}
}
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