svn-gvsig-desktop / trunk / libraries / libIverUtiles / src / com / iver / utiles / console / jedit / PythonTokenMarker.java @ 4890
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package com.iver.utiles.console.jedit; |
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/*
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* PythonTokenMarker.java - Python token marker
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* Copyright (C) 1999 Jonathan Revusky
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* Copyright (C) 1998, 1999 Slava Pestov
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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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* Python token marker.
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*
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* @author Jonathan Revusky
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* @version $Id$
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*/
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public class PythonTokenMarker extends TokenMarker |
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{
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private static final byte TRIPLEQUOTE1 = Token.INTERNAL_FIRST; |
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private static final byte TRIPLEQUOTE2 = Token.INTERNAL_LAST; |
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public PythonTokenMarker()
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{
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this.keywords = getKeywords();
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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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char[] array = line.array; |
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int offset = line.offset;
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lastOffset = offset; |
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lastKeyword = offset; |
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int length = line.count + offset;
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boolean backslash = false; |
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loop: for(int i = offset; i < length; i++) |
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{
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int i1 = (i+1); |
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char c = array[i];
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if(c == '\\') |
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{
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backslash = !backslash; |
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continue;
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} |
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switch(token)
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{
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case Token.NULL:
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switch(c)
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{
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case '#': |
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if(backslash)
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backslash = false;
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else
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{
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doKeyword(line,i,c); |
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addToken(i - lastOffset,token); |
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addToken(length - i,Token.COMMENT1); |
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lastOffset = lastKeyword = length; |
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break loop;
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} |
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break;
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case '"': |
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doKeyword(line,i,c); |
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if(backslash)
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backslash = false;
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else
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{
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addToken(i - lastOffset,token); |
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if(SyntaxUtilities.regionMatches(false, |
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line,i1,"\"\""))
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{
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token = TRIPLEQUOTE1; |
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} |
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else
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{
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token = Token.LITERAL1; |
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} |
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lastOffset = lastKeyword = i; |
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} |
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break;
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case '\'': |
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doKeyword(line,i,c); |
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if(backslash)
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backslash = false;
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else
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{
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addToken(i - lastOffset,token); |
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if(SyntaxUtilities.regionMatches(false, |
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line,i1,"''"))
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{
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token = TRIPLEQUOTE2; |
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} |
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else
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{
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token = Token.LITERAL2; |
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} |
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lastOffset = lastKeyword = i; |
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} |
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break;
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default:
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backslash = false;
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if(!Character.isLetterOrDigit(c) |
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&& c != '_')
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doKeyword(line,i,c); |
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break;
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} |
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break;
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case Token.LITERAL1:
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if(backslash)
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backslash = false;
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else if(c == '"') |
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{
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addToken(i1 - lastOffset,token); |
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token = Token.NULL; |
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lastOffset = lastKeyword = i1; |
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} |
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break;
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case Token.LITERAL2:
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if(backslash)
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backslash = false;
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else if(c == '\'') |
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{
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addToken(i1 - lastOffset,Token.LITERAL1); |
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token = Token.NULL; |
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lastOffset = lastKeyword = i1; |
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} |
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break;
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case TRIPLEQUOTE1:
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if(backslash)
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backslash = false;
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else if(SyntaxUtilities.regionMatches(false, |
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line,i,"\"\"\""))
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{
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addToken((i+=4) - lastOffset,
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Token.LITERAL1); |
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token = Token.NULL; |
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lastOffset = lastKeyword = i; |
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} |
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break;
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case TRIPLEQUOTE2:
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if(backslash)
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backslash = false;
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else if(SyntaxUtilities.regionMatches(false, |
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line,i,"'''"))
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{
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addToken((i+=4) - lastOffset,
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Token.LITERAL1); |
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token = Token.NULL; |
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lastOffset = lastKeyword = i; |
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} |
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break;
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default:
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throw new InternalError("Invalid state: " |
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+ token); |
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} |
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} |
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switch(token)
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{
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case TRIPLEQUOTE1:
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case TRIPLEQUOTE2:
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addToken(length - lastOffset,Token.LITERAL1); |
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break;
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case Token.NULL:
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doKeyword(line,length,'\0');
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default:
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addToken(length - lastOffset,token); |
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break;
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} |
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return token;
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} |
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public static KeywordMap getKeywords() |
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{
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if (pyKeywords == null) |
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{
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pyKeywords = new KeywordMap(false); |
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pyKeywords.add("and",Token.KEYWORD3);
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pyKeywords.add("not",Token.KEYWORD3);
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pyKeywords.add("or",Token.KEYWORD3);
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pyKeywords.add("if",Token.KEYWORD1);
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pyKeywords.add("for",Token.KEYWORD1);
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pyKeywords.add("assert",Token.KEYWORD1);
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pyKeywords.add("break",Token.KEYWORD1);
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pyKeywords.add("continue",Token.KEYWORD1);
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pyKeywords.add("elif",Token.KEYWORD1);
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pyKeywords.add("else",Token.KEYWORD1);
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pyKeywords.add("except",Token.KEYWORD1);
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pyKeywords.add("exec",Token.KEYWORD1);
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pyKeywords.add("finally",Token.KEYWORD1);
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pyKeywords.add("raise",Token.KEYWORD1);
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pyKeywords.add("return",Token.KEYWORD1);
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pyKeywords.add("try",Token.KEYWORD1);
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pyKeywords.add("while",Token.KEYWORD1);
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pyKeywords.add("def",Token.KEYWORD2);
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pyKeywords.add("class",Token.KEYWORD2);
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pyKeywords.add("del",Token.KEYWORD2);
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pyKeywords.add("from",Token.KEYWORD2);
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pyKeywords.add("global",Token.KEYWORD2);
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pyKeywords.add("import",Token.KEYWORD2);
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pyKeywords.add("in",Token.KEYWORD2);
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pyKeywords.add("is",Token.KEYWORD2);
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pyKeywords.add("lambda",Token.KEYWORD2);
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pyKeywords.add("pass",Token.KEYWORD2);
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pyKeywords.add("print",Token.KEYWORD2);
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} |
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return pyKeywords;
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} |
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// private members
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private static KeywordMap pyKeywords; |
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private KeywordMap keywords;
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private int lastOffset; |
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private int lastKeyword; |
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private boolean doKeyword(Segment line, int i, char c) |
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{
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int i1 = i+1; |
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int len = i - 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 = i; |
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} |
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lastKeyword = i1; |
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return false; |
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} |
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} |