Contributors:
Igor Malinin - initial contribution
- $Id: PHPPartitionScanner.java,v 1.29 2005-05-15 23:24:41 axelcl Exp $
+ $Id: PHPPartitionScanner.java,v 1.34 2006-10-21 23:18:32 pombredanne Exp $
**********************************************************************/
package net.sourceforge.phpeclipse.phpeditor.php;
import java.util.HashMap;
import java.util.Map;
+import net.sourceforge.phpdt.internal.compiler.parser.Scanner;
import net.sourceforge.phpeclipse.ui.text.rules.AbstractPartitioner;
import org.eclipse.jface.text.Assert;
* @author Igor Malinin
*/
public class PHPPartitionScanner implements IPartitionTokenScanner {
- public static final String PHP_SCRIPTING_AREA = "__php_scripting_area ";
+ public static final String PHP_SCRIPTING_AREA = "__php_scripting_area ";
- public static final int STATE_DEFAULT = 0;
-
- // public static final int STATE_TAG = 1;
- // public static final int STATE_SCRIPT = 2;
-
- private IDocument document;
-
- private int begin;
-
- private int end;
-
- private int offset;
-
- private int length;
-
- private int position;
-
- private int state;
-
- private Map tokens = new HashMap();
-
- public PHPPartitionScanner() {
- }
-
- /*
- * @see org.eclipse.jface.text.rules.ITokenScanner#nextToken()
- */
- public IToken nextToken() {
- offset += length;
-
- /*
- * switch (state) { case STATE_TAG: return nextTagToken(); }
- */
-
- switch (read()) {
- case ICharacterScanner.EOF:
- state = STATE_DEFAULT;
- return getToken(null);
-
- case '<':
- switch (read()) {
- case ICharacterScanner.EOF:
- state = STATE_DEFAULT;
- return getToken(null);
-
- case '?': // <?
-// int ch = read();
-//
-// switch (ch) {
-// case ICharacterScanner.EOF:
-// state = STATE_DEFAULT;
-// return getToken(PHP_SCRIPTING_AREA);
-// }
- return scanUntilPHPEndToken(PHP_SCRIPTING_AREA);
- }
-
- unread();
- }
-
- loop: while (true) {
- switch (read()) {
- case ICharacterScanner.EOF:
- state = STATE_DEFAULT;
- return getToken(null);
-
- case '<':
- switch (read()) {
- case ICharacterScanner.EOF:
- state = STATE_DEFAULT;
- return getToken(null);
-
- case '?':
- unread();
- break;
-
- case '<':
- unread();
-
- default:
- continue loop;
- }
-
- unread();
-
- state = STATE_DEFAULT;
- return getToken(null);
- }
- }
- }
-
- private IToken scanUntilPHPEndToken(String token) {
- int ch = read();
- while (true) {
- switch (ch) {
- case ICharacterScanner.EOF:
- state = STATE_DEFAULT;
- return getToken(token);
- case '"': // double quoted string
- // read until end of double quoted string
- if (!readUntilEscapedDQ()) {
- state = STATE_DEFAULT;
- return getToken(token);
- }
- break;
- case '\'': // single quoted string
- // read until end of single quoted string
- if (!readUntilEscapedSQ()) {
- state = STATE_DEFAULT;
- return getToken(token);
- }
- break;
- case '/': // comment start?
- ch = read();
- switch (ch) {
- case ICharacterScanner.EOF:
- break;
- case '/':
- // read until end of line
- if (!readSingleLine()) {
- state = STATE_DEFAULT;
- return getToken(token);
- }
- break;
- case '*':
- // read until end of comment
- if (!readMultiLineComment()) {
- state = STATE_DEFAULT;
- return getToken(token);
- }
- break;
- default:
- continue;
- }
- break;
- case '#': // line comment
- // read until end of line
- if (!readSingleLine()) {
- state = STATE_DEFAULT;
- return getToken(token);
- }
- break;
- case '?':
- ch = read();
- switch (ch) {
- case ICharacterScanner.EOF:
- case '>':
- state = STATE_DEFAULT;
- return getToken(token);
-
- case '?':
- continue;
- default:
- continue;
- }
- }
-
- ch = read();
- }
- }
-
- private IToken getToken(String type) {
- length = position - offset;
-
- if (length == 0) {
- return Token.EOF;
- }
-
-// if (length<0) {
-// try {
-// System.out.println("Length<0:"+document.get(offset,5)+""+length);
-// } catch (BadLocationException e) {
-// e.printStackTrace();
-// }
-// }
-
- if (type == null) {
- return Token.UNDEFINED;
- }
-
- IToken token = (IToken) tokens.get(type);
- if (token == null) {
- token = new Token(type);
- tokens.put(type, token);
- }
-
- return token;
- }
-
- private int read() {
- if (position >= end) {
- return ICharacterScanner.EOF;
- }
-
- try {
- return document.getChar(position++);
- } catch (BadLocationException e) {
- --position;
- return ICharacterScanner.EOF;
- }
- }
-
- private boolean readUntilEscapedDQ() {
- // search last double quoted character
- try {
- char ch;
- while (true) {
- if (position >= end) {
- return false;
- }
- ch = document.getChar(position++);
- if (ch == '\\') {
- if (position >= end) {
- return false;
- }
- ch = document.getChar(position++); // ignore escaped character
- } else if (ch == '"') {
- return true;
- }
- }
- } catch (BadLocationException e) {
- --position;
- }
- return false;
- }
-
- private boolean readUntilEscapedSQ() {
- // search last single quoted character
- try {
- char ch;
- while (true) {
- if (position >= end) {
- return false;
- }
- ch = document.getChar(position++);
- if (ch == '\\') {
- if (position >= end) {
- return false;
- }
- ch = document.getChar(position++); // ignore escaped character
- } else if (ch == '\'') {
- return true;
- }
- }
- } catch (BadLocationException e) {
- --position;
- }
- return false;
- }
-
- private boolean readSingleLine() {
- try {
- do {
- if (position >= end) {
- return false;
- }
- } while (document.getChar(position++) != '\n');
- return true;
- } catch (BadLocationException e) {
- --position;
- }
- return false;
- }
-
- private boolean readMultiLineComment() {
- try {
- char ch;
- while (true) {
- if (position >= end) {
- return false;
- }
- ch = document.getChar(position++);
- if (ch == '*') {
- if (position >= end) {
- return false;
- }
- if (document.getChar(position) == '/') {
- position++;
- return true;
- }
- }
- }
- } catch (BadLocationException e) {
- --position;
- }
- return false;
- }
-
- private void unread() {
- --position;
- }
-
- /*
- * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenOffset()
- */
- public int getTokenOffset() {
- if (AbstractPartitioner.DEBUG) {
- Assert.isTrue(offset >= 0, Integer.toString(offset));
- }
- return offset;
- }
-
- /*
- * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenLength()
- */
- public int getTokenLength() {
- return length;
- }
-
- /*
- * @see org.eclipse.jface.text.rules.ITokenScanner#setRange(IDocument, int, int)
- */
- public void setRange(IDocument document, int offset, int length) {
- this.document = document;
- this.begin = offset;
- this.end = offset + length;
-
- this.offset = offset;
- this.position = offset;
- this.length = 0;
- }
-
- /*
- * @see org.eclipse.jface.text.rules.IPartitionTokenScanner
- */
- public void setPartialRange(IDocument document, int offset, int length, String contentType, int partitionOffset) {
- state = STATE_DEFAULT;
- if (partitionOffset > -1) {
- int delta = offset - partitionOffset;
- if (delta > 0) {
- setRange(document, partitionOffset, length + delta);
- return;
- }
- }
- setRange(document, partitionOffset, length);
- }
-
- // private boolean isContinuationPartition(IDocument document, int offset) {
- // try {
- // String type = document.getContentType(offset - 1);
- //
- // if (type != IDocument.DEFAULT_CONTENT_TYPE) {
- // return true;
- // }
- // } catch (BadLocationException e) {}
- //
- // return false;
- // }
+ public static final int STATE_DEFAULT = 0;
+
+ // public static final int STATE_TAG = 1;
+ // public static final int STATE_SCRIPT = 2;
+
+ private IDocument document;
+
+ // private int begin;
+
+ private int end;
+
+ private int offset;
+
+ private int length;
+
+ private int position;
+
+ // private int state;
+
+ private Map tokens = new HashMap();
+
+ public PHPPartitionScanner() {
+ }
+
+ /*
+ * @see org.eclipse.jface.text.rules.ITokenScanner#nextToken()
+ */
+ public IToken nextToken() {
+ offset += length;
+
+ /*
+ * switch (state) { case STATE_TAG: return nextTagToken(); }
+ */
+
+ switch (read()) {
+ case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ return getToken(null);
+
+ case '<':
+ switch (read()) {
+ case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ return getToken(null);
+
+ case '?': // <?
+ // int ch = read();
+ //
+ // switch (ch) {
+ // case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ // return getToken(PHP_SCRIPTING_AREA);
+ // }
+ return scanUntilPHPEndToken(PHP_SCRIPTING_AREA);
+ }
+
+ unread();
+ }
+
+ loop: while (true) {
+ switch (read()) {
+ case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ return getToken(null);
+
+ case '<':
+ switch (read()) {
+ case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ return getToken(null);
+
+ case '?':
+ unread();
+ break;
+
+ case '<':
+ unread();
+
+ default:
+ continue loop;
+ }
+
+ unread();
+
+ // state = STATE_DEFAULT;
+ return getToken(null);
+ }
+ }
+ }
+
+ private IToken scanUntilPHPEndToken(String token) {
+ int ch = read();
+ while (true) {
+ switch (ch) {
+ case ICharacterScanner.EOF:
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ case '"': // double quoted string
+ // read until end of double quoted string
+ if (!readUntilEscapedDQ()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ break;
+ case '<': // heredoc string
+ ch = read();
+ switch (ch) {
+ case ICharacterScanner.EOF:
+ break;
+ case '<':
+ ch = read();
+ switch (ch) {
+ case ICharacterScanner.EOF:
+ break;
+ case '<':
+ // read until end of heredoc string
+ if (!readUntilEscapedHEREDOC()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ }
+ }
+ break;
+ case '\'': // single quoted string
+ // read until end of single quoted string
+ if (!readUntilEscapedSQ()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ break;
+ case '/': // comment start?
+ ch = read();
+ switch (ch) {
+ case ICharacterScanner.EOF:
+ break;
+ case '/':
+ // read until end of line
+ if (!readSingleLine()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ break;
+ case '*':
+ // read until end of comment
+ if (!readMultiLineComment()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ break;
+ default:
+ continue;
+ }
+ break;
+ case '#': // line comment
+ // read until end of line
+ if (!readSingleLine()) {
+ // state = STATE_DEFAULT;
+ return getToken(token);
+ }
+ break;
+ case '?':
+ ch = read();
+ switch (ch) {
+ case ICharacterScanner.EOF:
+ case '>':
+ // state = STATE_DEFAULT;
+ return getToken(token);
+
+ case '?':
+ continue;
+ default:
+ continue;
+ }
+ }
+
+ ch = read();
+ }
+ }
+
+ private IToken getToken(String type) {
+ length = position - offset;
+
+ if (length == 0) {
+ return Token.EOF;
+ }
+
+ // if (length<0) {
+ // try {
+ // System.out.println("Length<0:"+document.get(offset,5)+""+length);
+ // } catch (BadLocationException e) {
+ // e.printStackTrace();
+ // }
+ // }
+
+ if (type == null) {
+ return Token.UNDEFINED;
+ }
+
+ IToken token = (IToken) tokens.get(type);
+ if (token == null) {
+ token = new Token(type);
+ tokens.put(type, token);
+ }
+
+ return token;
+ }
+
+ private int read() {
+ if (position >= end) {
+ return ICharacterScanner.EOF;
+ }
+
+ try {
+ return document.getChar(position++);
+ } catch (BadLocationException e) {
+ --position;
+ return ICharacterScanner.EOF;
+ }
+ }
+
+ private boolean readUntilEscapedDQ() {
+ // search last double quoted character
+ try {
+ char ch;
+ while (true) {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ if (ch == '\\') {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++); // ignore escaped
+ // character
+ } else if (ch == '"') {
+ return true;
+ }
+ }
+ } catch (BadLocationException e) {
+ --position;
+ }
+ return false;
+ }
+
+ private boolean readUntilEscapedSQ() {
+ // search last single quoted character
+ try {
+ char ch;
+ while (true) {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ if (ch == '\\') {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++); // ignore escaped
+ // character
+ } else if (ch == '\'') {
+ return true;
+ }
+ }
+ } catch (BadLocationException e) {
+ --position;
+ }
+ return false;
+ }
+
+ private boolean readUntilEscapedHEREDOC() {
+ // search until heredoc ends
+ try {
+ char ch;
+ StringBuffer buf = new StringBuffer();
+ char[] heredocIdent;
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ if (!Scanner.isPHPIdentifierStart(ch)) {
+ return false;
+ }
+ while (Scanner.isPHPIdentifierPart(ch)) {
+ buf.append(ch);
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ }
+ heredocIdent = buf.toString().toCharArray();
+ while (true) {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ if (ch == '\n') { // heredoc could end after a newline
+ int pos = 0;
+ while (true) {
+ if (position >= end) {
+ return false;
+ }
+ if (pos == heredocIdent.length) {
+ return true;
+ }
+ ch = document.getChar(position++); // ignore escaped
+ // character
+ if (ch != heredocIdent[pos]) {
+ break;
+ }
+ pos++;
+ }
+ }
+ }
+ } catch (BadLocationException e) {
+ --position;
+ }
+ return false;
+ }
+
+ private boolean readSingleLine() {
+ try {
+ do {
+ if (position >= end) {
+ return false;
+ }
+ } while (document.getChar(position++) != '\n');
+ return true;
+ } catch (BadLocationException e) {
+ --position;
+ }
+ return false;
+ }
+
+ private boolean readMultiLineComment() {
+ try {
+ char ch;
+ while (true) {
+ if (position >= end) {
+ return false;
+ }
+ ch = document.getChar(position++);
+ if (ch == '*') {
+ if (position >= end) {
+ return false;
+ }
+ if (document.getChar(position) == '/') {
+ position++;
+ return true;
+ }
+ }
+ }
+ } catch (BadLocationException e) {
+ --position;
+ }
+ return false;
+ }
+
+ private void unread() {
+ --position;
+ }
+
+ /*
+ * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenOffset()
+ */
+ public int getTokenOffset() {
+ if (AbstractPartitioner.DEBUG) {
+ Assert.isTrue(offset >= 0, Integer.toString(offset));
+ }
+ return offset;
+ }
+
+ /*
+ * @see org.eclipse.jface.text.rules.ITokenScanner#getTokenLength()
+ */
+ public int getTokenLength() {
+ return length;
+ }
+
+ /*
+ * @see org.eclipse.jface.text.rules.ITokenScanner#setRange(IDocument, int,
+ * int)
+ */
+ public void setRange(IDocument document, int offset, int length) {
+ this.document = document;
+ // this.begin = offset;
+ this.end = offset + length;
+
+ this.offset = offset;
+ this.position = offset;
+ this.length = 0;
+ }
+
+ /*
+ * @see org.eclipse.jface.text.rules.IPartitionTokenScanner
+ */
+ public void setPartialRange(IDocument document, int offset, int length,
+ String contentType, int partitionOffset) {
+ // state = STATE_DEFAULT;
+ if (partitionOffset > -1) {
+ int delta = offset - partitionOffset;
+ if (delta > 0) {
+ setRange(document, partitionOffset, length + delta);
+ return;
+ }
+ }
+ setRange(document, partitionOffset, length);
+ }
+
+ // private boolean isContinuationPartition(IDocument document, int offset) {
+ // try {
+ // String type = document.getContentType(offset - 1);
+ //
+ // if (type != IDocument.DEFAULT_CONTENT_TYPE) {
+ // return true;
+ // }
+ // } catch (BadLocationException e) {}
+ //
+ // return false;
+ // }
}
\ No newline at end of file
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