--- /dev/null
+/*
+ * Copyright (c) 2003-2004 Christopher Lenz 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:
+ * Christopher Lenz - initial API and implementation
+ *
+ * $Id: CssCodeScanner.java,v 1.1 2004-09-02 18:11:48 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.text;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import net.sourceforge.phpeclipse.css.core.internal.text.CssTextUtils;
+import net.sourceforge.phpeclipse.css.core.profiles.IProfile;
+import net.sourceforge.phpeclipse.css.ui.internal.CssUIPreferences;
+import net.sourceforge.phpeclipse.css.ui.text.IColorManager;
+
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.text.rules.ICharacterScanner;
+import org.eclipse.jface.text.rules.IRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.IWhitespaceDetector;
+import org.eclipse.jface.text.rules.Token;
+import org.eclipse.jface.text.rules.WhitespaceRule;
+
+/**
+ * Rule based scanner responsible for syntax highlighting CSS source.
+ */
+public class CssCodeScanner extends AbstractCssScanner {
+
+ // Inner Classes -----------------------------------------------------------
+
+ /**
+ * Custom rule that detects the SGML/XML comment delimiters
+ * (<code><!--</code> and <code>--></code> which are allowed at the
+ * beginning and the end of CSS content.
+ */
+ private class CdoCdcRule implements IRule {
+
+ /**
+ * The associated token.
+ */
+ private IToken token;
+
+ /**
+ * Constructor.
+ *
+ * @param token the associated token
+ */
+ public CdoCdcRule(IToken token) {
+ this.token = token;
+ }
+
+ /**
+ * @see IRule#evaluate(ICharacterScanner)
+ */
+ public synchronized IToken evaluate(ICharacterScanner scanner) {
+ IToken retVal = Token.UNDEFINED;
+ int count = 1;
+ int c = scanner.read();
+ if (c == '<') {
+ count++;
+ c = scanner.read();
+ if (c == '!') {
+ count++;
+ c = scanner.read();
+ if (c == '-') {
+ count++;
+ c = scanner.read();
+ if (c == '-') {
+ return token;
+ }
+ }
+ }
+ } else if (c == '-') {
+ count++;
+ c = scanner.read();
+ if (c == '-') {
+ count++;
+ c = scanner.read();
+ if (c == '>') {
+ return token;
+ }
+ }
+ }
+ while (count-- > 0) {
+ scanner.unread();
+ }
+ return retVal;
+ }
+
+ }
+
+ /**
+ * Custom rule that can detect an at-keyword such as <code>@import</code>.
+ */
+ private class AtKeywordRule implements IRule {
+
+ /**
+ * The associated token.
+ */
+ private IToken token;
+
+ /**
+ * Collection of known at-keywords.
+ */
+ private Collection atKeywords;
+
+ /**
+ * Constructor.
+ *
+ * @param token the associated token
+ */
+ public AtKeywordRule(IToken token) {
+ this.token = token;
+ atKeywords = getProfile().getAtKeywords();
+ }
+
+ /**
+ * @see IRule#evaluate(ICharacterScanner)
+ */
+ public synchronized IToken evaluate(ICharacterScanner scanner) {
+ IToken retVal = Token.UNDEFINED;
+ int count = 1;
+ int c = scanner.read();
+ if (c == '@') {
+ c = scanner.read();
+ if (CssTextUtils.isCssIdentifierStart((char) c)) {
+ resetBuffer();
+ do {
+ appendToBuffer((char) c);
+ c = scanner.read();
+ count++;
+ } while (CssTextUtils.isCssIdentifierPart((char) c));
+ String candidate = getBufferContent().toLowerCase();
+ if (atKeywords.contains(candidate)) {
+ return token;
+ }
+ }
+ }
+ while (count-- > 0) {
+ scanner.unread();
+ }
+ return retVal;
+ }
+
+ }
+
+ /**
+ * Custom rule that can detect a known property.
+ */
+ private class PropertyRule implements IRule {
+
+ /**
+ * The associated token.
+ */
+ private IToken token;
+
+ /**
+ * Collection of known properties.
+ */
+ private Collection properties;
+
+ /**
+ * Constructor.
+ *
+ * @param token the associated token
+ */
+ public PropertyRule(IToken token) {
+ this.token = token;
+ properties = getProfile().getProperties();
+ }
+
+ /**
+ * @see IRule#evaluate(ICharacterScanner)
+ */
+ public synchronized IToken evaluate(ICharacterScanner scanner) {
+ IToken retVal = Token.UNDEFINED;
+ int count = 1;
+ int c = scanner.read();
+ if (CssTextUtils.isCssIdentifierStart((char) c)) {
+ resetBuffer();
+ do {
+ appendToBuffer((char) c);
+ c = scanner.read();
+ count++;
+ } while (CssTextUtils.isCssIdentifierPart((char) c));
+ String candidate = getBufferContent().toLowerCase();
+ if (properties.contains(candidate)) {
+ while (CssTextUtils.isCssWhitespace((char) c)) {
+ c = scanner.read();
+ count++;
+ }
+ if (c == ':') {
+ scanner.unread();
+ return token;
+ }
+ }
+ }
+ while (count-- > 0) {
+ scanner.unread();
+ }
+ return retVal;
+ }
+
+ }
+
+ /**
+ * Custom rule that can detect a pseudo-class in a selector.
+ */
+ private class PseudoClassRule implements IRule {
+
+ /**
+ * The associated token.
+ */
+ private IToken token;
+
+ /**
+ * Collection of known pseudo-classes.
+ */
+ private Collection pseudoClasses;
+
+ /**
+ * Constructor.
+ *
+ * @param token the associated token
+ */
+ public PseudoClassRule(IToken token) {
+ this.token = token;
+ pseudoClasses = getProfile().getPseudoClassNames();
+ }
+
+ /**
+ * @see IRule#evaluate(ICharacterScanner)
+ */
+ public synchronized IToken evaluate(ICharacterScanner scanner) {
+ IToken retVal = Token.UNDEFINED;
+ int count = 1;
+ int c = scanner.read();
+ if (c == ':') {
+ c = scanner.read();
+ if (CssTextUtils.isCssIdentifierStart((char) c)) {
+ resetBuffer();
+ do {
+ appendToBuffer((char) c);
+ c = scanner.read();
+ count++;
+ } while (CssTextUtils.isCssIdentifierPart((char) c));
+ String candidate = getBufferContent().toLowerCase();
+ if (pseudoClasses.contains(candidate)) {
+ return token;
+ }
+ }
+ }
+ while (count-- > 0) {
+ scanner.unread();
+ }
+ return retVal;
+ }
+
+ }
+
+ /**
+ * Detects CSS white space.
+ */
+ private static class WhitespaceDetector implements IWhitespaceDetector {
+
+ /**
+ * @see IWhitespaceDetector#isWhitespace(char)
+ */
+ public boolean isWhitespace(char c) {
+ return CssTextUtils.isCssWhitespace(c);
+ }
+
+ }
+
+ // Instance Variables ------------------------------------------------------
+
+ /**
+ * The current CSS profile.
+ */
+ private IProfile profile;
+
+ /**
+ * Shared buffer used by the word detectors.
+ */
+ private StringBuffer buffer = new StringBuffer();
+
+ // Constructors ------------------------------------------------------------
+
+ /**
+ * Constructor.
+ *
+ * @param store The preference store
+ * @param manager The color manager
+ * @param profile The CSS profile to use
+ */
+ public CssCodeScanner(IPreferenceStore store, IColorManager manager,
+ IProfile profile) {
+ super(store, manager);
+ this.profile = profile;
+
+ List rules = new ArrayList();
+
+ rules.add(new WhitespaceRule(new WhitespaceDetector()));
+
+ rules.add(new CdoCdcRule(createToken(
+ CssUIPreferences.EDITOR_COMMENT_COLOR,
+ CssUIPreferences.EDITOR_COMMENT_BOLD)));
+ rules.add(new AtKeywordRule(createToken(
+ CssUIPreferences.EDITOR_AT_KEYWORD_COLOR,
+ CssUIPreferences.EDITOR_AT_KEYWORD_BOLD)));
+ rules.add(new PropertyRule(createToken(
+ CssUIPreferences.EDITOR_PROPERTY_COLOR,
+ CssUIPreferences.EDITOR_PROPERTY_BOLD)));
+ rules.add(new PseudoClassRule(createToken(
+ CssUIPreferences.EDITOR_PSEUDO_CLASS_COLOR,
+ CssUIPreferences.EDITOR_PSEUDO_CLASS_BOLD)));
+
+ setRules((IRule[]) rules.toArray(new IRule[rules.size()]));
+
+ setDefaultReturnToken(createToken(
+ CssUIPreferences.EDITOR_DEFAULT_COLOR,
+ CssUIPreferences.EDITOR_DEFAULT_BOLD));
+ }
+
+ // Private Methods ---------------------------------------------------------
+
+ private IProfile getProfile() {
+ return profile;
+ }
+
+ private void appendToBuffer(char c) {
+ buffer.append(c);
+ }
+
+ private String getBufferContent() {
+ return buffer.toString();
+ }
+
+ private void resetBuffer() {
+ buffer.setLength(0);
+ }
+
+}
git://secure.phpeclipse.com / phpeclipse.git / blobdiff