+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation 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 API and implementation
- *******************************************************************************/
-package net.sourceforge.phpdt.internal.ui.text;
-
-import net.sourceforge.phpeclipse.ui.text.rules.AbstractPartitioner;
-
-import org.eclipse.jface.text.Assert;
-import org.eclipse.jface.text.IDocument;
-import org.eclipse.jface.text.rules.ICharacterScanner;
-import org.eclipse.jface.text.rules.IPartitionTokenScanner;
-import org.eclipse.jface.text.rules.IToken;
-import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
-import org.eclipse.jface.text.rules.Token;
-
-/**
- * This scanner recognizes the JavaDoc comments, Java multi line comments, Java single line comments, Java strings.
- */
-public class FastJavaPartitionScanner implements IPartitionTokenScanner, IPHPPartitions {
-
- // states
- private static final int PHP = 0;
-
- private static final int SINGLE_LINE_COMMENT = 1;
-
- private static final int MULTI_LINE_COMMENT = 2;
-
- private static final int PHPDOC = 3;
-
- private static final int STRING_DQ = 4;
-
- private static final int STRING_SQ = 5;
-
- // private static final int CHARACTER= 4;
-
- // beginning of prefixes and postfixes
- private static final int NONE = 0;
-
- private static final int BACKSLASH = 1; // postfix for STRING and CHARACTER
-
- private static final int SLASH = 2; // prefix for SINGLE_LINE or MULTI_LINE or JAVADOC
-
- private static final int SLASH_STAR = 3; // prefix for MULTI_LINE_COMMENT or JAVADOC
-
- private static final int SLASH_STAR_STAR = 4; // prefix for MULTI_LINE_COMMENT or JAVADOC
-
- private static final int STAR = 5; // postfix for MULTI_LINE_COMMENT or JAVADOC
-
- private static final int CARRIAGE_RETURN = 6; // postfix for STRING, CHARACTER and SINGLE_LINE_COMMENT
-
- /** The scanner. */
- private final BufferedDocumentScanner fScanner = new BufferedDocumentScanner(1000); // faster implementation
-
- /** The offset of the last returned token. */
- private int fTokenOffset;
-
- /** The length of the last returned token. */
- private int fTokenLength;
-
- /** The state of the scanner. */
- private int fState;
-
- /** The last significant characters read. */
- private int fLast;
-
- /** The amount of characters already read on first call to nextToken(). */
- private int fPrefixLength;
-
- // emulate JavaPartitionScanner
- private boolean fEmulate = false;
-
- private int fJavaOffset;
-
- private int fJavaLength;
-
- private final IToken[] fTokens = new IToken[] { new Token(null), new Token(PHP_SINGLELINE_COMMENT),
- new Token(PHP_MULTILINE_COMMENT), new Token(PHP_PHPDOC_COMMENT), new Token(PHP_STRING_DQ), new Token(PHP_STRING_SQ) };
-
- public FastJavaPartitionScanner(boolean emulate) {
- fEmulate = emulate;
- }
-
- public FastJavaPartitionScanner() {
- this(false);
- }
-
- /*
- * @see org.eclipse.jface.text.rules.ITokenScanner#nextToken()
- */
- public IToken nextToken() {
-
- // emulate JavaPartitionScanner
- if (fEmulate) {
- if (fJavaOffset != -1 && fTokenOffset + fTokenLength != fJavaOffset + fJavaLength) {
- fTokenOffset += fTokenLength;
- return fTokens[PHP];
- } else {
- fJavaOffset = -1;
- fJavaLength = 0;
- }
- }
-
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
-
- while (true) {
- final int ch = fScanner.read();
-
- // characters
- switch (ch) {
- case ICharacterScanner.EOF:
- if (fTokenLength > 0) {
- fLast = NONE; // ignore last
- return preFix(fState, PHP, NONE, 0);
-
- } else {
- fLast = NONE;
- fPrefixLength = 0;
- return Token.EOF;
- }
-
- case '\r':
- // emulate JavaPartitionScanner
- if (!fEmulate && fLast != CARRIAGE_RETURN) {
- fLast = CARRIAGE_RETURN;
- fTokenLength++;
- continue;
-
- } else {
-
- switch (fState) {
- case SINGLE_LINE_COMMENT:
- // case CHARACTER:
- // case STRING_DQ:
- // case STRING_SQ:
- if (fTokenLength > 0) {
- IToken token = fTokens[fState];
-
- // emulate JavaPartitionScanner
- if (fEmulate) {
- fTokenLength++;
- fLast = NONE;
- fPrefixLength = 0;
- } else {
- fLast = CARRIAGE_RETURN;
- fPrefixLength = 1;
- }
-
- fState = PHP;
- return token;
-
- } else {
- consume();
- continue;
- }
-
- default:
- consume();
- continue;
- }
- }
-
- case '\n':
- switch (fState) {
- case SINGLE_LINE_COMMENT:
- // case CHARACTER:
- // case STRING_DQ:
- // case STRING_SQ:
- // assert(fTokenLength > 0);
- return postFix(fState);
-
- default:
- consume();
- continue;
- }
-
- default:
- if (!fEmulate && fLast == CARRIAGE_RETURN) {
- switch (fState) {
- case SINGLE_LINE_COMMENT:
- // case CHARACTER:
- // case STRING_DQ:
- // case STRING_SQ:
- int last;
- int newState;
- switch (ch) {
- case '/':
- last = SLASH;
- newState = PHP;
- break;
-
- case '*':
- last = STAR;
- newState = PHP;
- break;
-
- case '\'':
- last = NONE;
- newState = STRING_SQ;
- break;
-
- case '"':
- last = NONE;
- newState = STRING_DQ;
- break;
-
- case '\r':
- last = CARRIAGE_RETURN;
- newState = PHP;
- break;
-
- case '\\':
- last = BACKSLASH;
- newState = PHP;
- break;
-
- default:
- last = NONE;
- newState = PHP;
- break;
- }
-
- fLast = NONE; // ignore fLast
- return preFix(fState, newState, last, 1);
-
- default:
- break;
- }
- }
- }
-
- // states
- switch (fState) {
- case PHP:
- switch (ch) {
- case '#':
- if (fTokenLength > 0) {
- return preFix(PHP, SINGLE_LINE_COMMENT, NONE, 1);
- } else {
- preFix(PHP, SINGLE_LINE_COMMENT, NONE, 1);
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
- break;
- }
- case '/':
- if (fLast == SLASH) {
- if (fTokenLength - getLastLength(fLast) > 0) {
- return preFix(PHP, SINGLE_LINE_COMMENT, NONE, 2);
- } else {
- preFix(PHP, SINGLE_LINE_COMMENT, NONE, 2);
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
- break;
- }
-
- } else {
- fTokenLength++;
- fLast = SLASH;
- break;
- }
-
- case '*':
- if (fLast == SLASH) {
- if (fTokenLength - getLastLength(fLast) > 0)
- return preFix(PHP, MULTI_LINE_COMMENT, SLASH_STAR, 2);
- else {
- preFix(PHP, MULTI_LINE_COMMENT, SLASH_STAR, 2);
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
- break;
- }
-
- } else {
- consume();
- break;
- }
-
- case '\'':
- fLast = NONE; // ignore fLast
- if (fTokenLength > 0)
- return preFix(PHP, STRING_SQ, NONE, 1);
- else {
- preFix(PHP, STRING_SQ, NONE, 1);
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
- break;
- }
-
- case '"':
- fLast = NONE; // ignore fLast
- if (fTokenLength > 0)
- return preFix(PHP, STRING_DQ, NONE, 1);
- else {
- preFix(PHP, STRING_DQ, NONE, 1);
- fTokenOffset += fTokenLength;
- fTokenLength = fPrefixLength;
- break;
- }
-
- default:
- consume();
- break;
- }
- break;
-
- case SINGLE_LINE_COMMENT:
- consume();
- break;
-
- case PHPDOC:
- switch (ch) {
- case '/':
- switch (fLast) {
- case SLASH_STAR_STAR:
- return postFix(MULTI_LINE_COMMENT);
-
- case STAR:
- return postFix(PHPDOC);
-
- default:
- consume();
- break;
- }
- break;
-
- case '*':
- fTokenLength++;
- fLast = STAR;
- break;
-
- default:
- consume();
- break;
- }
- break;
-
- case MULTI_LINE_COMMENT:
- switch (ch) {
- case '*':
- if (fLast == SLASH_STAR) {
- fLast = SLASH_STAR_STAR;
- fTokenLength++;
- fState = PHPDOC;
- } else {
- fTokenLength++;
- fLast = STAR;
- }
- break;
-
- case '/':
- if (fLast == STAR) {
- return postFix(MULTI_LINE_COMMENT);
- } else {
- consume();
- break;
- }
-
- default:
- consume();
- break;
- }
- break;
-
- case STRING_DQ:
- switch (ch) {
- case '\\':
- fLast = (fLast == BACKSLASH) ? NONE : BACKSLASH;
- fTokenLength++;
- break;
-
- case '\"':
- if (fLast != BACKSLASH) {
- return postFix(STRING_DQ);
-
- } else {
- consume();
- break;
- }
-
- default:
- consume();
- break;
- }
- break;
- case STRING_SQ:
- switch (ch) {
- case '\\':
- fLast = (fLast == BACKSLASH) ? NONE : BACKSLASH;
- fTokenLength++;
- break;
-
- case '\'':
- if (fLast != BACKSLASH) {
- return postFix(STRING_SQ);
-
- } else {
- consume();
- break;
- }
-
- default:
- consume();
- break;
- }
- break;
- // case CHARACTER:
- // switch (ch) {
- // case '\\':
- // fLast= (fLast == BACKSLASH) ? NONE : BACKSLASH;
- // fTokenLength++;
- // break;
- //
- // case '\'':
- // if (fLast != BACKSLASH) {
- // return postFix(CHARACTER);
- //
- // } else {
- // consume();
- // break;
- // }
- //
- // default:
- // consume();
- // break;
- // }
- // break;
- }
- }
- }
-
- private static final int getLastLength(int last) {
- switch (last) {
- default:
- return -1;
-
- case NONE:
- return 0;
-
- case CARRIAGE_RETURN:
- case BACKSLASH:
- case SLASH:
- case STAR:
- return 1;
-
- case SLASH_STAR:
- return 2;
-
- case SLASH_STAR_STAR:
- return 3;
- }
- }
-
- private final void consume() {
- fTokenLength++;
- fLast = NONE;
- }
-
- private final IToken postFix(int state) {
- fTokenLength++;
- fLast = NONE;
- fState = PHP;
- fPrefixLength = 0;
- return fTokens[state];
- }
-
- private final IToken preFix(int state, int newState, int last, int prefixLength) {
- // emulate JavaPartitionScanner
- if (fEmulate && state == PHP && (fTokenLength - getLastLength(fLast) > 0)) {
- fTokenLength -= getLastLength(fLast);
- fJavaOffset = fTokenOffset;
- fJavaLength = fTokenLength;
- fTokenLength = 1;
- fState = newState;
- fPrefixLength = prefixLength;
- fLast = last;
- return fTokens[state];
-
- } else {
- fTokenLength -= getLastLength(fLast);
- fLast = last;
- fPrefixLength = prefixLength;
- IToken token = fTokens[state];
- fState = newState;
- return token;
- }
- }
-
- private static int getState(String contentType) {
-
- if (contentType == null)
- return PHP;
-
- else if (contentType.equals(PHP_SINGLELINE_COMMENT))
- return SINGLE_LINE_COMMENT;
-
- else if (contentType.equals(PHP_MULTILINE_COMMENT))
- return MULTI_LINE_COMMENT;
-
- else if (contentType.equals(PHP_PHPDOC_COMMENT))
- return PHPDOC;
-
- else if (contentType.equals(PHP_STRING_DQ))
- return STRING_DQ;
- else if (contentType.equals(PHP_STRING_SQ))
- return STRING_SQ;
- // else if (contentType.equals(JAVA_CHARACTER))
- // return CHARACTER;
-
- else
- return PHP;
- }
-
- /*
- * @see IPartitionTokenScanner#setPartialRange(IDocument, int, int, String, int)
- */
- public void setPartialRange(IDocument document, int offset, int length, String contentType, int partitionOffset) {
- fScanner.setRange(document, offset, length);
- setRange(document, offset, length);
- fTokenOffset = partitionOffset;
- fTokenLength = 0;
- fPrefixLength = offset - partitionOffset;
- fLast = NONE;
-
- if (offset == partitionOffset) {
- // restart at beginning of partition
- fState = PHP;
- } else {
- fState = getState(contentType);
- }
-
- // emulate JavaPartitionScanner
- if (fEmulate) {
- fJavaOffset = -1;
- fJavaLength = 0;
- }
- }
-
- /*
- * @see ITokenScanner#setRange(IDocument, int, int)
- */
- public void setRange(IDocument document, int offset, int length) {
- fScanner.setRange(document, offset, length);
- fTokenOffset = offset;
- fTokenLength = 0;
- fPrefixLength = 0;
- fLast = NONE;
- fState = PHP;
-
- // emulate JavaPartitionScanner
- if (fEmulate) {
- fJavaOffset = -1;
- fJavaLength = 0;
- }
- }
-
- /*
- * @see ITokenScanner#getTokenLength()
- */
- public int getTokenLength() {
- return fTokenLength;
- }
-
- /*
- * @see ITokenScanner#getTokenOffset()
- */
- public int getTokenOffset() {
- if (AbstractPartitioner.DEBUG) {
- Assert.isTrue(fTokenOffset >= 0, Integer.toString(fTokenOffset));
- }
- return fTokenOffset;
- }
-
-}
\ No newline at end of file
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