Fixed bug #1404228: Crash on <?php // comment ?>
authoraxelcl <axelcl>
Fri, 13 Jan 2006 16:22:07 +0000 (16:22 +0000)
committeraxelcl <axelcl>
Fri, 13 Jan 2006 16:22:07 +0000 (16:22 +0000)
net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/FastJavaPartitionScanner.java

index be75a7f..7efcc30 100644 (file)
@@ -20,586 +20,591 @@ import org.eclipse.jface.text.rules.IToken;
 import org.eclipse.jface.text.rules.Token;
 
 /**
- * This scanner recognizes the JavaDoc comments, Java multi line comments, Java single line comments, Java strings.
+ * 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;
+       // states
+       private static final int PHP = 0;
 
-  private static final int SINGLE_LINE_COMMENT = 1;
+       private static final int SINGLE_LINE_COMMENT = 1;
 
-  private static final int MULTI_LINE_COMMENT = 2;
+       private static final int MULTI_LINE_COMMENT = 2;
 
-  private static final int PHPDOC = 3;
+       private static final int PHPDOC = 3;
 
-  private static final int STRING_DQ = 4;
+       private static final int STRING_DQ = 4;
 
-  private static final int STRING_SQ = 5;
+       private static final int STRING_SQ = 5;
 
-  private static final int STRING_HEREDOC = 6;
+       private static final int STRING_HEREDOC = 6;
 
-  // beginning of prefixes and postfixes
-  private static final int NONE = 0;
+       // beginning of prefixes and postfixes
+       private static final int NONE = 0;
 
-  private static final int BACKSLASH = 1; // postfix for STRING_DQ and CHARACTER
+       private static final int BACKSLASH = 1; // postfix for STRING_DQ and CHARACTER
 
-  private static final int SLASH = 2; // prefix for SINGLE_LINE or MULTI_LINE or JAVADOC
+       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 = 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 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 STAR = 5; // postfix for MULTI_LINE_COMMENT or
+                                                                                                                                                       // JAVADOC
 
-  private static final int CARRIAGE_RETURN = 6; // postfix for STRING_DQ, CHARACTER and SINGLE_LINE_COMMENT
+       private static final int CARRIAGE_RETURN = 6; // postfix for STRING_DQ,
+                                                                                                                                                                                               // CHARACTER and
+                                                                                                                                                                                               // SINGLE_LINE_COMMENT
 
-//  private static final int HEREDOC = 7;
+       // private static final int HEREDOC = 7;
 
-  /** The scanner. */
-  private final BufferedDocumentScanner fScanner = new BufferedDocumentScanner(1000); // faster implementation
+       /** The scanner. */
+       private final BufferedDocumentScanner fScanner = new BufferedDocumentScanner(1000); // faster
+                                                                                                                                                                                                                                                                                                                                                       // implementation
 
-  /** The offset of the last returned token. */
-  private int fTokenOffset;
+       /** The offset of the last returned token. */
+       private int fTokenOffset;
 
-  /** The length of the last returned token. */
-  private int fTokenLength;
+       /** The length of the last returned token. */
+       private int fTokenLength;
 
-  /** The state of the scanner. */
-  private int fState;
+       /** The state of the scanner. */
+       private int fState;
 
-  /** The last significant characters read. */
-  private int fLast;
+       /** The last significant characters read. */
+       private int fLast;
 
-  /** The amount of characters already read on first call to nextToken(). */
-  private int fPrefixLength;
+       /** The amount of characters already read on first call to nextToken(). */
+       private int fPrefixLength;
 
-  // emulate JavaPartitionScanner
-  private boolean fEmulate = false;
+       // emulate JavaPartitionScanner
+       private boolean fEmulate = false;
 
-  private int fJavaOffset;
+       private int fJavaOffset;
 
-  private int fJavaLength;
+       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),
-      new Token(PHP_STRING_HEREDOC)};
+       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),
+                       new Token(PHP_STRING_HEREDOC) };
 
-  public FastJavaPartitionScanner(boolean emulate) {
-    fEmulate = emulate;
-  }
+       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;
-        }
-
-      case '?':
-        if (fState == SINGLE_LINE_COMMENT) {
-          int nextch = fScanner.read();
-          if (nextch == '>') {
-            // <h1>This is an <?php # echo 'simple' ?> example.</h1>
-            fTokenLength--;
-            fScanner.unread();
-            fScanner.unread();
-            return postFix(fState);
-          }
-//          fScanner.unread();
-        }
-
-      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(PHP_STRING_HEREDOC))
-      return STRING_HEREDOC;
-
-    //         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;
-  }
+       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;
+                               }
+
+                       case '?':
+                               if (fState == SINGLE_LINE_COMMENT) {
+                                       int nextch = fScanner.read();
+                                       if (nextch == '>') {
+                                               // <h1>This is an <?php # echo 'simple' ?> example.</h1>
+                                               fTokenLength--;
+                                               fScanner.unread();
+                                               fScanner.unread();
+                                               return postFix(fState);
+                                       }
+                                       // bug #1404228: Crash on <?php // comment ?>
+                                       // fScanner.unread();
+                               }
+
+                       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(PHP_STRING_HEREDOC))
+                       return STRING_HEREDOC;
+
+               // 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;
+       }
 
 }
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