-/**********************************************************************
-Copyright (c) 2000, 2002 IBM Corp. and others.
-All rights reserved. This program and the accompanying materials
-are made available under the terms of the Common Public License v1.0
-which accompanies this distribution, and is available at
-http://www.eclipse.org/legal/cpl-v10.html
-
-Contributors:
- IBM Corporation - Initial implementation
- Klaus Hartlage - www.eclipseproject.de
-**********************************************************************/
+/**
+ * This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * Created on 05.03.2003
+ *
+ * @author Stefan Langer (musk)
+ * @version $Revision: 1.13 $
+ */
package net.sourceforge.phpeclipse.phpeditor.php;
-import java.util.ArrayList;
-import java.util.List;
-import org.eclipse.jface.text.rules.EndOfLineRule;
-import org.eclipse.jface.text.rules.ICharacterScanner;
-import org.eclipse.jface.text.rules.IPredicateRule;
-import org.eclipse.jface.text.rules.IRule;
-import org.eclipse.jface.text.rules.IToken;
-import org.eclipse.jface.text.rules.IWordDetector;
-import org.eclipse.jface.text.rules.MultiLineRule;
-import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
-import org.eclipse.jface.text.rules.RuleBasedScanner;
-import org.eclipse.jface.text.rules.SingleLineRule;
-import org.eclipse.jface.text.rules.Token;
-import org.eclipse.jface.text.rules.WordRule;
+import java.util.*;
+
+import org.eclipse.jface.text.*;
+import org.eclipse.jface.text.rules.*;
/**
- * This scanner recognizes the JavaDoc comments and Java multi line comments.
+ *
*/
-public class PHPPartitionScanner extends RuleBasedPartitionScanner {
-
- private final static String SKIP= "__skip"; //$NON-NLS-1$
- public final static String JAVA_MULTILINE_COMMENT= "__html_multiline_comment"; //$NON-NLS-1$
-// public final static String JAVA_DOC= "__java_javadoc"; //$NON-NLS-1$
- public final static String PHP= "__php";
- /**
- * Detector for empty comments.
- */
- static class EmptyCommentDetector implements IWordDetector {
-
- /* (non-Javadoc)
- * Method declared on IWordDetector
- */
- public boolean isWordStart(char c) {
- return (c == '/');
- }
-
- /* (non-Javadoc)
- * Method declared on IWordDetector
- */
- public boolean isWordPart(char c) {
- return (c == '*' || c == '/');
- }
- };
-
- /**
- *
- */
- static class WordPredicateRule extends WordRule implements IPredicateRule {
-
- private IToken fSuccessToken;
-
- public WordPredicateRule(IToken successToken) {
- super(new EmptyCommentDetector());
- fSuccessToken= successToken;
- addWord("/**/", fSuccessToken);
- }
-
- /*
- * @see org.eclipse.jface.text.rules.IPredicateRule#evaluate(ICharacterScanner, boolean)
- */
- public IToken evaluate(ICharacterScanner scanner, boolean resume) {
- return super.evaluate(scanner);
- }
-
- /*
- * @see org.eclipse.jface.text.rules.IPredicateRule#getSuccessToken()
- */
- public IToken getSuccessToken() {
- return fSuccessToken;
- }
- };
-
- /**
- * Creates the partitioner and sets up the appropriate rules.
- */
- public PHPPartitionScanner() {
- super();
-
-// IToken javaDoc= new Token(JAVA_DOC);
- IToken comment= new Token(JAVA_MULTILINE_COMMENT);
- IToken php = new Token(PHP);
-
- List rules= new ArrayList();
-
- // Add rule for single line comments.
- // rules.add(new EndOfLineRule("//", Token.UNDEFINED));
-
- // Add rule for strings and character constants.
- // rules.add(new SingleLineRule("\"", "\"", Token.UNDEFINED, '\\'));
- // rules.add(new SingleLineRule("'", "'", Token.UNDEFINED, '\\'));
-
- // Add special case word rule.
- rules.add(new WordPredicateRule(comment));
-
- // Add rules for multi-line comments and javadoc.
- //rules.add(new MultiLineRule("/**", "*/", javaDoc));
- rules.add(new MultiLineRule("<!--", "-->", comment));
- rules.add(new MultiLineRule("<? ", "?>", php));
- rules.add(new MultiLineRule("<?php", "?>", php));
- rules.add(new MultiLineRule("<?PHP", "?>", php));
- //Add rule for processing instructions
-
-
- IPredicateRule[] result= new IPredicateRule[rules.size()];
- rules.toArray(result);
- setPredicateRules(result);
- }
+public class PHPPartitionScanner implements IPartitionTokenScanner {
+ private static final boolean DEBUG = false;
+ private IDocument fDocument = null;
+ private int fOffset = -1;
+ private String fContentType = IPHPPartitionScannerConstants.HTML;
+ private String fPrevContentType;
+
+ private boolean partitionBorder = false;
+ private int fTokenOffset;
+ private int fEnd = -1;
+ private int fLength;
+ private Map tokens = new HashMap();
+
+ public PHPPartitionScanner() {
+ this.tokens.put(
+ IPHPPartitionScannerConstants.PHP,
+ new Token(IPHPPartitionScannerConstants.PHP));
+ this.tokens.put(
+ IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT,
+ new Token(IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT));
+ this.tokens.put(
+ IPHPPartitionScannerConstants.HTML,
+ new Token(IPHPPartitionScannerConstants.HTML));
+ this.tokens.put(
+ IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT,
+ new Token(IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT));
+ this.tokens.put(
+ IDocument.DEFAULT_CONTENT_TYPE,
+ new Token(IDocument.DEFAULT_CONTENT_TYPE));
+ }
+
+ private IToken getToken(String type) {
+ fLength = fOffset - fTokenOffset;
+ IToken token = (IToken) this.tokens.get(type);
+ Assert.isNotNull(token, "Token for type \"" + type + "\" not found!");
+ if (DEBUG) {
+ System.out.println(
+ "Partition: fTokenOffset="
+ + fTokenOffset
+ + " fContentType="
+ + fContentType
+ + " fLength="
+ + fLength);
+ }
+ return token;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.text.rules.IPartitionTokenScanner#setPartialRange(org.eclipse.jface.text.IDocument, int, int, java.lang.String, int)
+ */
+ public void setPartialRange(
+ IDocument document,
+ int offset,
+ int length,
+ String contentType,
+ int partitionOffset) {
+ this.setRange(document, offset, length);
+ if (DEBUG) {
+ System.out.println(
+ "PartialRange: contentType="
+ + contentType
+ + " partitionOffset="
+ + partitionOffset);
+ }
+
+ if (this.tokens.containsKey(contentType))
+ fContentType = contentType;
+ // TODO Calculate previouse contenttype
+ if (partitionOffset > -1) {
+ partitionBorder = false;
+ fTokenOffset = partitionOffset;
+ }
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenLength()
+ */
+ public int getTokenLength() {
+ return fLength;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenOffset()
+ */
+ public int getTokenOffset() {
+ return fTokenOffset;
+ }
+
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.text.rules.ITokenScanner#nextToken()
+ */
+ public IToken nextToken() {
+ int c;
+
+ // check if we are not allready at the end of the
+ // file
+ if ((c = read()) == ICharacterScanner.EOF) {
+ partitionBorder = false;
+ return Token.EOF;
+ } else
+ unread();
+
+ if (partitionBorder) {
+ fTokenOffset = fOffset;
+ partitionBorder = false;
+ }
+
+ while ((c = read()) != ICharacterScanner.EOF) {
+ switch (c) {
+ case '<' :
+ if (fContentType
+ != IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT
+ && checkPattern(new char[] { '?', 'p', 'h', 'p' }, true)) {
+ if (fContentType != IPHPPartitionScannerConstants.PHP
+ && fOffset - 5 > 0) {
+ fOffset -= 5;
+ IToken token = getToken(fContentType);
+ // save previouse contenttype
+ fPrevContentType = fContentType;
+
+ fContentType = IPHPPartitionScannerConstants.PHP;
+
+ return token;
+ } else
+ fContentType = IPHPPartitionScannerConstants.PHP;
+
+ // remember offset of this partition
+ fTokenOffset = fOffset - 5;
+ } else if (fContentType != IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT
+ && (checkPattern(new char[] { '?', ' ' }, false)
+ || checkPattern(new char[] { '?', '\r' }, false)
+ || checkPattern(new char[] { '?', '\n' }, false))) {
+ if (fContentType != IPHPPartitionScannerConstants.PHP
+ && fOffset - 3 > 0) {
+ fOffset -= 3;
+ IToken token = getToken(fContentType);
+ // save previouse contenttype
+ fPrevContentType = fContentType;
+
+ fContentType = IPHPPartitionScannerConstants.PHP;
+
+ return token;
+ } else
+ fContentType = IPHPPartitionScannerConstants.PHP;
+
+ // remember offset of this partition
+ fTokenOffset = fOffset - 3;
+ } else if (checkPattern(new char[] { '!', '-', '-' })) {
+ // return previouse partition
+ if (fContentType
+ != IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT
+ && fOffset - 4 > 0) {
+ fOffset -= 4;
+ IToken token = getToken(fContentType);
+
+ fContentType =
+ IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT;
+ return token;
+ } else
+ fContentType =
+ IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT;
+
+ fTokenOffset = fOffset - 4;
+ }
+ break;
+ case '?' :
+ if (fContentType == IPHPPartitionScannerConstants.PHP) {
+ if ((c = read()) == '>') {
+ // TODO Actually calculate the previouse contenttype from the document
+ if (fPrevContentType != null)
+ fContentType = fPrevContentType;
+ else
+ fContentType = IPHPPartitionScannerConstants.HTML;
+ partitionBorder = true;
+ return getToken(IPHPPartitionScannerConstants.PHP);
+ } else if (c != ICharacterScanner.EOF)
+ unread();
+ }
+ break;
+ case '-' :
+ if (fContentType
+ == IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT
+ && checkPattern(new char[] { '-', '>' })) {
+ fContentType = IPHPPartitionScannerConstants.HTML;
+ partitionBorder = true;
+ return getToken(
+ IPHPPartitionScannerConstants.HTML_MULTILINE_COMMENT);
+ }
+ break;
+ case '/' :
+ if ((c = read()) == '*') { // MULTINE COMMENT JAVASCRIPT, CSS, PHP
+ if (fContentType == IPHPPartitionScannerConstants.PHP
+ && fOffset - 2 > 0) {
+ fOffset -= 2;
+ IToken token = getToken(fContentType);
+
+ fContentType =
+ IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT;
+
+ return token;
+ } else if (
+ fContentType
+ == IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT) {
+
+ fTokenOffset = fOffset - 2;
+ }
+
+ } else if (c != ICharacterScanner.EOF)
+ unread();
+ break;
+ case '*' :
+ if ((c = read()) == '/') {
+ if (fContentType
+ == IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT) {
+ fContentType = IPHPPartitionScannerConstants.PHP;
+ partitionBorder = true;
+
+ return getToken(
+ IPHPPartitionScannerConstants.PHP_MULTILINE_COMMENT);
+ } else if (
+ fContentType
+ == IPHPPartitionScannerConstants.CSS_MULTILINE_COMMENT) {
+ } else if (
+ fContentType
+ == IPHPPartitionScannerConstants.JS_MULTILINE_COMMENT) {
+ }
+ } else if (c != ICharacterScanner.EOF)
+ unread();
+ break;
+ }
+ }
+
+ // end of file reached but we have to return the
+ // last partition.
+ return getToken(fContentType);
+ }
+ /* (non-Javadoc)
+ * @see org.eclipse.jface.text.rules.ITokenScanner#setRange(org.eclipse.jface.text.IDocument, int, int)
+ */
+ public void setRange(IDocument document, int offset, int length) {
+ if (DEBUG) {
+ System.out.println("SET RANGE: offset=" + offset + " length=" + length);
+ }
+
+ fDocument = document;
+ fOffset = offset;
+ fTokenOffset = offset;
+ fLength = 0;
+ fEnd = fOffset + length;
+ //partitionBorder = false;
+ }
+
+ private int read() {
+ try {
+ if (fOffset < fEnd) {
+ return fDocument.getChar(fOffset++);
+ }
+ return ICharacterScanner.EOF;
+ } catch (BadLocationException e) {
+ // should never happen
+ // TODO write stacktrace to log
+ fOffset = fEnd;
+ return ICharacterScanner.EOF;
+ }
+ }
+
+ private void unread() {
+ --fOffset;
+ }
+
+ private boolean checkPattern(char[] pattern) {
+ return checkPattern(pattern, false);
+ }
+
+ /**
+ * Check if next character sequence read from document is equals to
+ * the provided pattern. Pattern is read from left to right until the
+ * first character read doesn't match. If this happens all read characters are
+ * unread.
+ * @param pattern The pattern to check.
+ * @return <code>true</code> if pattern is equals else returns <code>false</code>.
+ */
+ private boolean checkPattern(char[] pattern, boolean ignoreCase) {
+ int prevOffset = fOffset;
+ for (int i = 0; i < pattern.length; i++) {
+ int c = read();
+
+ if (c == ICharacterScanner.EOF
+ || !letterEquals(c, pattern[i], ignoreCase)) {
+ fOffset = prevOffset;
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private boolean letterEquals(int test, char letter, boolean ignoreCase) {
+ if (test == letter)
+ return true;
+ else if (
+ ignoreCase
+ && Character.isLowerCase(letter)
+ && test == Character.toUpperCase(letter))
+ return true;
+ else if (
+ ignoreCase
+ && Character.isUpperCase(letter)
+ && test == Character.toLowerCase(letter))
+ return true;
+
+ return false;
+ }
+
}
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