svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.utils / src / main / java / org / gvsig / utils / console / jedit / SQLTokenMarker.java @ 40561
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.utils.console.jedit; |
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/*
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* SQLTokenMarker.java - Generic SQL token marker
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* Copyright (C) 1999 mike dillon
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*
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* You may use and modify this package for any purpose. Redistribution is
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* permitted, in both source and binary form, provided that this notice
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* remains intact in all source distributions of this package.
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*/
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import javax.swing.text.Segment; |
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/**
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* SQL token marker.
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*
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* @author mike dillon
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* @version $Id$
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*/
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public class SQLTokenMarker extends TokenMarker |
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{
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private int offset, lastOffset, lastKeyword, length; |
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// public members
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public SQLTokenMarker(KeywordMap k)
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{
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this(k, false); |
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} |
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public SQLTokenMarker(KeywordMap k, boolean tsql) |
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{
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keywords = k; |
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isTSQL = tsql; |
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} |
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public byte markTokensImpl(byte token, Segment line, int lineIndex) |
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{
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offset = lastOffset = lastKeyword = line.offset; |
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length = line.count + offset; |
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loop: |
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for(int i = offset; i < length; i++) |
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{
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switch(line.array[i])
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{
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case '*': |
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if(token == Token.COMMENT1 && length - i >= 1 && line.array[i+1] == '/') |
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{
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token = Token.NULL; |
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i++; |
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addToken((i + 1) - lastOffset,Token.COMMENT1);
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lastOffset = i + 1;
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} |
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else if (token == Token.NULL) |
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{
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searchBack(line, i); |
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addToken(1,Token.OPERATOR);
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lastOffset = i + 1;
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} |
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break;
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case '[': |
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if(token == Token.NULL)
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{
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searchBack(line, i); |
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token = Token.LITERAL1; |
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literalChar = '[';
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lastOffset = i; |
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} |
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break;
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case ']': |
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if(token == Token.LITERAL1 && literalChar == '[') |
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{
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token = Token.NULL; |
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literalChar = 0;
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addToken((i + 1) - lastOffset,Token.LITERAL1);
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lastOffset = i + 1;
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} |
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break;
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case '.': case ',': case '(': case ')': |
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if (token == Token.NULL) {
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searchBack(line, i); |
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addToken(1, Token.NULL);
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lastOffset = i + 1;
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} |
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break;
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case '+': case '%': case '&': case '|': case '^': |
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case '~': case '<': case '>': case '=': |
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if (token == Token.NULL) {
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searchBack(line, i); |
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addToken(1,Token.OPERATOR);
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lastOffset = i + 1;
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} |
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break;
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case ' ': case '\t': |
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if (token == Token.NULL) {
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searchBack(line, i, false);
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} |
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break;
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case ':': |
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if(token == Token.NULL)
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{
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addToken((i+1) - lastOffset,Token.LABEL);
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lastOffset = i + 1;
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} |
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break;
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case '/': |
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if(token == Token.NULL)
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{
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if (length - i >= 2 && line.array[i + 1] == '*') |
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{
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searchBack(line, i); |
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token = Token.COMMENT1; |
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lastOffset = i; |
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i++; |
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} |
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else
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{
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searchBack(line, i); |
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addToken(1,Token.OPERATOR);
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lastOffset = i + 1;
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} |
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} |
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break;
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case '-': |
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if(token == Token.NULL)
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{
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if (length - i >= 2 && line.array[i+1] == '-') |
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{
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searchBack(line, i); |
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addToken(length - i,Token.COMMENT1); |
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lastOffset = length; |
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break loop;
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} |
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else
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{
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searchBack(line, i); |
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addToken(1,Token.OPERATOR);
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lastOffset = i + 1;
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} |
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} |
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break;
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case '!': |
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if(isTSQL && token == Token.NULL && length - i >= 2 && |
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(line.array[i+1] == '=' || line.array[i+1] == '<' || line.array[i+1] == '>')) |
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{
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searchBack(line, i); |
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addToken(1,Token.OPERATOR);
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lastOffset = i + 1;
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} |
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break;
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case '"': case '\'': |
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if(token == Token.NULL)
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{
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token = Token.LITERAL1; |
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literalChar = line.array[i]; |
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addToken(i - lastOffset,Token.NULL); |
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lastOffset = i; |
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} |
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else if(token == Token.LITERAL1 && literalChar == line.array[i]) |
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{
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token = Token.NULL; |
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literalChar = 0;
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addToken((i + 1) - lastOffset,Token.LITERAL1);
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lastOffset = i + 1;
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} |
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break;
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default:
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break;
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} |
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} |
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if(token == Token.NULL)
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searchBack(line, length, false);
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if(lastOffset != length)
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addToken(length - lastOffset,token); |
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return token;
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} |
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// protected members
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protected boolean isTSQL = false; |
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// private members
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private KeywordMap keywords;
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private char literalChar = 0; |
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private void searchBack(Segment line, int pos) |
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{
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searchBack(line, pos, true);
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} |
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private void searchBack(Segment line, int pos, boolean padNull) |
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{
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int len = pos - lastKeyword;
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byte id = keywords.lookup(line,lastKeyword,len);
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if(id != Token.NULL)
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{
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if(lastKeyword != lastOffset)
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addToken(lastKeyword - lastOffset,Token.NULL); |
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addToken(len,id); |
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lastOffset = pos; |
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} |
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lastKeyword = pos + 1;
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if (padNull && lastOffset < pos)
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addToken(pos - lastOffset, Token.NULL); |
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} |
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} |