net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/jdom/DOMField.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.core.jdom;
  12
  13 import java.util.Enumeration;
  14
  15 import net.sourceforge.phpdt.core.IJavaElement;
  16 import net.sourceforge.phpdt.core.IType;
  17 import net.sourceforge.phpdt.core.jdom.DOMException;
  18 import net.sourceforge.phpdt.core.jdom.IDOMField;
  19 import net.sourceforge.phpdt.core.jdom.IDOMMember;
  20 import net.sourceforge.phpdt.core.jdom.IDOMNode;
  21 import net.sourceforge.phpdt.internal.compiler.util.Util;
  22 import net.sourceforge.phpdt.internal.core.util.CharArrayBuffer;
  23 import net.sourceforge.phpdt.internal.core.util.CharArrayOps;
  24
  25 /**
  26  * DOMField provides an implementation of IDOMField.
  27  *
  28  * @see IDOMField
  29  * @see DOMNode
  30  */
  31 class DOMField extends DOMMember implements IDOMField {
  32
  33         /**
  34          * Contains the type of the field when the type has been altered from the
  35          * contents in the document, otherwise <code>null</code>.
  36          */
  37         protected String fType;
  38
  39         /**
  40          * The original inclusive source range of the field's type in the document.
  41          */
  42         protected int[] fTypeRange;
  43
  44         /**
  45          * The contents of the initializer when the initializer has been altered
  46          * from the original state in the document, otherwise <code>null</code>.
  47          */
  48         protected String fInitializer;
  49
  50         /**
  51          * The original inclusive source range of the initializer in the document.
  52          */
  53         protected int[] fInitializerRange;
  54
  55         /**
  56          * Constructs an empty field node.
  57          */
  58         DOMField() {
  59         }
  60
  61         /**
  62          * Creates a new detailed FIELD document fragment on the given range of the
  63          * document.
  64          *
  65          * @param document -
  66          *            the document containing this node's original contents
  67          * @param sourceRange -
  68          *            a two element array of integers describing the entire
  69          *            inclusive source range of this node within its document.
  70          *            Contents start on and include the character at the first
  71          *            position. Contents end on and include the character at the
  72          *            last position. An array of -1's indicates this node's contents
  73          *            do not exist in the document.
  74          * @param name -
  75          *            the identifier portion of the name of this field,
  76          *            corresponding to VariableDeclaratorId (JLS 8.3).
  77          * @param nameRange -
  78          *            a two element array of integers describing the entire
  79          *            inclusive source range of this node's name within its
  80          *            document, including any array qualifiers that might follow the
  81          *            name.
  82          * @param commentRange -
  83          *            a two element array describing the comments that precede the
  84          *            member declaration. The first matches the start of this node's
  85          *            sourceRange, and the second is the new-line or first
  86          *            non-whitespace character following the last comment. If no
  87          *            comments are present, this array contains two -1's.
  88          * @param flags -
  89          *            an integer representing the modifiers for this member. The
  90          *            integer can be analyzed with net.sourceforge.phpdt.core.Flags
  91          * @param modifierRange -
  92          *            a two element array describing the location of modifiers for
  93          *            this member within its source range. The first integer is the
  94          *            first character of the first modifier for this member, and the
  95          *            second integer is the last whitespace character preceeding the
  96          *            next part of this member declaration. If there are no
  97          *            modifiers present in this node's source code (that is, package
  98          *            default visibility), this array contains two -1's.
  99          * @param typeRange-
 100          *            a two element array describing the location of the typeName in
 101          *            the document - the positions of the first and last characters
 102          *            of the typeName.
 103          * @param type -
 104          *            the type of the field, in normalized form, as defined in Type
 105          *            in Field Declaration (JLS 8.3)
 106          * @param hasInitializer -
 107          *            true if this field declaration includes an initializer,
 108          *            otherwise false
 109          * @param initRange -
 110          *            a two element array describing the location of the initializer
 111          *            in the declaration. The first integer is the position of the
 112          *            character following the equals sign, and the position of the
 113          *            last character is the last in the initializer. If this field
 114          *            has no initializer, this array contains two -1's.
 115          * @param isVariableDeclarator -
 116          *            true if the field is a seconday variable declarator for a
 117          *            previous field declaration.
 118          */
 119         DOMField(char[] document, int[] sourceRange, String name, int[] nameRange,
 120                         int[] commentRange, int flags, int[] modifierRange,
 121                         int[] typeRange, String type, boolean hasInitializer,
 122                         int[] initRange, boolean isVariableDeclarator) {
 123                 super(document, sourceRange, name, nameRange, commentRange, flags,
 124                                 modifierRange);
 125
 126                 fType = type;
 127                 fTypeRange = typeRange;
 128                 setHasInitializer(hasInitializer);
 129                 fInitializerRange = initRange;
 130                 setIsVariableDeclarator(isVariableDeclarator);
 131                 setMask(MASK_DETAILED_SOURCE_INDEXES, true);
 132
 133         }
 134
 135         /**
 136          * Creates a new simple FIELD document fragment on the given range of the
 137          * document.
 138          *
 139          * @param document -
 140          *            the document containing this node's original contents
 141          * @param sourceRange -
 142          *            a two element array of integers describing the entire
 143          *            inclusive source range of this node within its document.
 144          *            Contents start on and include the character at the first
 145          *            position. Contents end on and include the character at the
 146          *            last position. An array of -1's indicates this node's contents
 147          *            do not exist in the document.
 148          * @param name -
 149          *            the identifier portion of the name of this field,
 150          *            corresponding to VariableDeclaratorId (JLS 8.3).
 151          * @param nameRange -
 152          *            a two element array of integers describing the entire
 153          *            inclusive source range of this node's name within its
 154          *            document, including any array qualifiers that might follow the
 155          *            name.
 156          * @param flags -
 157          *            an integer representing the modifiers for this member. The
 158          *            integer can be analyzed with net.sourceforge.phpdt.core.Flags
 159          * @param type -
 160          *            the type of the field, in normalized form, as defined in Type
 161          *            in Field Declaration (JLS 8.3)
 162          * @param isVariableDeclarator -
 163          *            true if the field is a seconday variable declarator for a
 164          *            previous field declaration.
 165          */
 166         DOMField(char[] document, int[] sourceRange, String name, int[] nameRange,
 167                         int flags, String type, boolean isVariableDeclarator) {
 168                 this(document, sourceRange, name, nameRange, new int[] { -1, -1 },
 169                                 flags, new int[] { -1, -1 }, new int[] { -1, -1 }, type, false,
 170                                 new int[] { -1, -1 }, isVariableDeclarator);
 171                 setMask(MASK_DETAILED_SOURCE_INDEXES, false);
 172         }
 173
 174         /**
 175          * Appends this member's body contents to the given CharArrayBuffer. Body
 176          * contents include the member body and any trailing whitespace.
 177          *
 178          * <p>
 179          * A field does not have a body.
 180          *
 181          * @see DOMMember#appendMemberBodyContents(CharArrayBuffer)
 182          */
 183         protected void appendMemberBodyContents(CharArrayBuffer buffer) {
 184         }
 185
 186         /**
 187          * @see DOMMember#appendMemberDeclarationContents(CharArrayBuffer)
 188          */
 189         protected void appendMemberDeclarationContents(CharArrayBuffer buffer) {
 190
 191                 if (isVariableDeclarator()) {
 192                         buffer.append(fDocument, fSourceRange[0], fNameRange[0]
 193                                         - fSourceRange[0]);
 194                 } else {
 195                         buffer.append(getTypeContents()).append(fDocument,
 196                                         fTypeRange[1] + 1, fNameRange[0] - fTypeRange[1] - 1);
 197                 }
 198
 199                 buffer.append(getNameContents());
 200                 if (hasInitializer()) {
 201                         if (fInitializerRange[0] < 0) {
 202                                 buffer.append('=').append(fInitializer).append(fDocument,
 203                                                 fNameRange[1] + 1, fSourceRange[1] - fNameRange[1]);
 204                         } else {
 205                                 buffer.append(fDocument, fNameRange[1] + 1,
 206                                                 fInitializerRange[0] - fNameRange[1] - 1).append(
 207                                                 getInitializer()).append(fDocument,
 208                                                 fInitializerRange[1] + 1,
 209                                                 fSourceRange[1] - fInitializerRange[1]);
 210                         }
 211                 } else {
 212                         if (fInitializerRange[0] < 0) {
 213                                 buffer.append(fDocument, fNameRange[1] + 1, fSourceRange[1]
 214                                                 - fNameRange[1]);
 215                         } else {
 216                                 buffer.append(fDocument, fInitializerRange[1] + 1,
 217                                                 fSourceRange[1] - fInitializerRange[1]);
 218                         }
 219                 }
 220
 221         }
 222
 223         /**
 224          * Appends this member's header contents to the given CharArrayBuffer.
 225          * Header contents include any preceding comments and modifiers.
 226          *
 227          * <p>
 228          * If this field is a secondary variable declarator, there is no header.
 229          *
 230          * @see DOMMember#appendMemberHeaderFragment(CharArrayBuffer)
 231          */
 232         protected void appendMemberHeaderFragment(CharArrayBuffer buffer) {
 233
 234                 if (isVariableDeclarator()) {
 235                         return;
 236                 } else {
 237                         super.appendMemberHeaderFragment(buffer);
 238                 }
 239
 240         }
 241
 242         /**
 243          * @see DOMMember#appendSimpleContents(CharArrayBuffer)
 244          */
 245         protected void appendSimpleContents(CharArrayBuffer buffer) {
 246                 // append eveything before my name
 247                 buffer.append(fDocument, fSourceRange[0], fNameRange[0]
 248                                 - fSourceRange[0]);
 249                 // append my name
 250                 buffer.append(fName);
 251                 // append everything after my name
 252                 buffer.append(fDocument, fNameRange[1] + 1, fSourceRange[1]
 253                                 - fNameRange[1]);
 254         }
 255
 256         /**
 257          * Generates detailed source indexes for this node if possible.
 258          *
 259          * @exception DOMException
 260          *                if unable to generate detailed source indexes for this
 261          *                node
 262          */
 263         // protected void becomeDetailed() throws DOMException {
 264         // if (!isDetailed()) {
 265         // if (isVariableDeclarator() || hasMultipleVariableDeclarators()) {
 266         // DOMNode first = getFirstFieldDeclaration();
 267         // DOMNode last = getLastFieldDeclaration();
 268         // DOMNode node= first;
 269         // String source= first.getContents();
 270         // while (node != last) {
 271         // node= node.fNextNode;
 272         // source+=node.getContents();
 273         // }
 274         // DOMBuilder builder = new DOMBuilder();
 275         // IDOMField[] details= builder.createFields(source.toCharArray());
 276         // if (details.length == 0) {
 277         // throw new DOMException(ProjectPrefUtil.bind("dom.cannotDetail"));
 278         // //$NON-NLS-1$
 279         // } else {
 280         // node= this;
 281         // for (int i= 0; i < details.length; i++) {
 282         // node.shareContents((DOMNode)details[i]);
 283         // node= node.fNextNode;
 284         // }
 285         // }
 286         // } else {
 287         // super.becomeDetailed();
 288         // }
 289         //
 290         // }
 291         // }
 292         /**
 293          * @see IDOMNode#clone()
 294          */
 295         public Object clone() {
 296                 // if (isVariableDeclarator() || hasMultipleVariableDeclarators()) {
 297                 // return getFactory().createField(new
 298                 // String(getSingleVariableDeclaratorContents()));
 299                 // } else {
 300                 return super.clone();
 301                 // }
 302         }
 303
 304         /**
 305          * Expands all variable declarators in this field declaration into
 306          * stand-alone field declarations.
 307          */
 308         protected void expand() {
 309                 if (isVariableDeclarator() || hasMultipleVariableDeclarators()) {
 310                         Enumeration siblings = new SiblingEnumeration(
 311                                         getFirstFieldDeclaration());
 312                         DOMField field = (DOMField) siblings.nextElement();
 313                         DOMNode next = field.fNextNode;
 314                         while (siblings.hasMoreElements() && (next instanceof DOMField)
 315                                         && (((DOMField) next).isVariableDeclarator())) {
 316                                 field.localizeContents();
 317                                 if (field.fParent != null) {
 318                                         field.fParent.fragment();
 319                                 }
 320                                 field = (DOMField) siblings.nextElement();
 321                                 next = field.fNextNode;
 322                         }
 323                         field.localizeContents();
 324                 }
 325         }
 326
 327         /**
 328          * @see DOMNode#getDetailedNode()
 329          */
 330         // protected DOMNode getDetailedNode() {
 331         // if (isVariableDeclarator() || hasMultipleVariableDeclarators()) {
 332         // return (DOMNode)getFactory().createField(new
 333         // String(getSingleVariableDeclaratorContents()));
 334         // } else {
 335         // return (DOMNode)getFactory().createField(getContents());
 336         // }
 337         // }
 338         /**
 339          * Returns the first field document fragment that defines the type for this
 340          * variable declarator.
 341          */
 342         protected DOMField getFirstFieldDeclaration() {
 343                 if (isVariableDeclarator()) {
 344                         return ((DOMField) fPreviousNode).getFirstFieldDeclaration();
 345                 } else {
 346                         return this;
 347                 }
 348         }
 349
 350         /**
 351          * @see IDOMField#getInitializer()
 352          */
 353         public String getInitializer() {
 354                 becomeDetailed();
 355                 if (hasInitializer()) {
 356                         if (fInitializer != null) {
 357                                 return fInitializer;
 358                         } else {
 359                                 return CharArrayOps.substring(fDocument, fInitializerRange[0],
 360                                                 fInitializerRange[1] + 1 - fInitializerRange[0]);
 361                         }
 362                 } else {
 363                         return null;
 364                 }
 365         }
 366
 367         /**
 368          * @see IDOMNode#getJavaElement
 369          */
 370         public IJavaElement getJavaElement(IJavaElement parent)
 371                         throws IllegalArgumentException {
 372                 if (parent.getElementType() == IJavaElement.TYPE) {
 373                         return ((IType) parent).getField(getName());
 374                 } else {
 375                         throw new IllegalArgumentException(Util
 376                                         .bind("element.illegalParent")); //$NON-NLS-1$
 377                 }
 378         }
 379
 380         /**
 381          * Returns the last field document fragment in this muli-declarator
 382          * statement.
 383          */
 384 //      protected DOMField getLastFieldDeclaration() {
 385 //              DOMField field = this;
 386 //              while (field.isVariableDeclarator()
 387 //                              || field.hasMultipleVariableDeclarators()) {
 388 //                      if (field.fNextNode instanceof DOMField
 389 //                                      && ((DOMField) field.fNextNode).isVariableDeclarator()) {
 390 //                              field = (DOMField) field.fNextNode;
 391 //                      } else {
 392 //                              break;
 393 //                      }
 394 //              }
 395 //              return field;
 396 //      }
 397
 398         /**
 399          * @see DOMMember#getMemberDeclarationStartPosition()
 400          */
 401         protected int getMemberDeclarationStartPosition() {
 402                 return fTypeRange[0];
 403         }
 404
 405         /**
 406          * @see IDOMNode#getNodeType()
 407          */
 408         public int getNodeType() {
 409                 return IDOMNode.FIELD;
 410         }
 411
 412         /**
 413          * Returns a String representing this field declaration as a field
 414          * declaration with one variable declarator.
 415          */
 416 //      protected char[] getSingleVariableDeclaratorContents() {
 417 //
 418 //              CharArrayBuffer buffer = new CharArrayBuffer();
 419 //              DOMField first = getFirstFieldDeclaration();
 420 //              if (first.isDetailed()) {
 421 //                      first.appendMemberHeaderFragment(buffer);
 422 //                      buffer.append(getType());
 423 //                      if (isVariableDeclarator()) {
 424 //                              buffer.append(' ');
 425 //                      } else {
 426 //                              buffer.append(fDocument, fTypeRange[1] + 1, fNameRange[0]
 427 //                                              - fTypeRange[1] - 1);
 428 //                      }
 429 //              } else {
 430 //                      buffer.append(first.fDocument, first.fSourceRange[0],
 431 //                                      first.fNameRange[0] - first.fSourceRange[0]);
 432 //              }
 433 //
 434 //              buffer.append(getName());
 435 //              if (hasInitializer()) {
 436 //                      if (fInitializerRange[0] < 0) {
 437 //                              buffer.append('=').append(fInitializer).append(';').append(
 438 //                                              Util.LINE_SEPARATOR);
 439 //                      } else {
 440 //                              buffer.append(fDocument, fNameRange[1] + 1,
 441 //                                              fInitializerRange[0] - fNameRange[1] - 1).append(
 442 //                                              getInitializer()).append(';').append(
 443 //                                              Util.LINE_SEPARATOR);
 444 //                      }
 445 //              } else {
 446 //                      buffer.append(';').append(Util.LINE_SEPARATOR);
 447 //              }
 448 //              return buffer.getContents();
 449 //      }
 450
 451         /**
 452          * @see IDOMField#getType()
 453          */
 454         public String getType() {
 455                 return fType;
 456         }
 457
 458         /**
 459          * Returns the souce code to be used for this field's type.
 460          */
 461         protected char[] getTypeContents() {
 462                 if (isTypeAltered()) {
 463                         return fType.toCharArray();
 464                 } else {
 465                         return CharArrayOps.subarray(fDocument, fTypeRange[0],
 466                                         fTypeRange[1] + 1 - fTypeRange[0]);
 467                 }
 468         }
 469
 470         /**
 471          * Returns true if this field has an initializer expression, otherwise
 472          * false.
 473          */
 474         protected boolean hasInitializer() {
 475                 return getMask(MASK_FIELD_HAS_INITIALIZER);
 476         }
 477
 478         /**
 479          * Returns true is this field declarations has more than one variable
 480          * declarator, otherwise false;
 481          */
 482         protected boolean hasMultipleVariableDeclarators() {
 483                 return fNextNode != null && (fNextNode instanceof DOMField)
 484                                 && ((DOMField) fNextNode).isVariableDeclarator();
 485         }
 486
 487         /**
 488          * Inserts the given un-parented node as a sibling of this node, immediately
 489          * before this node. Once inserted, the sibling is only dependent on this
 490          * document fragment.
 491          *
 492          * <p>
 493          * When a sibling is inserted before a variable declarator, it must first be
 494          * expanded.
 495          *
 496          * @see IDOMNode#insertSibling(IDOMNode)
 497          */
 498         public void insertSibling(IDOMNode sibling)
 499                         throws IllegalArgumentException, DOMException {
 500                 if (isVariableDeclarator()) {
 501                         expand();
 502                 }
 503                 super.insertSibling(sibling);
 504         }
 505
 506         /**
 507          * Returns true if this field's type has been altered from the original
 508          * document contents.
 509          */
 510         protected boolean isTypeAltered() {
 511                 return getMask(MASK_FIELD_TYPE_ALTERED);
 512         }
 513
 514         /**
 515          * Returns true if this field is declared as a secondary variable declarator
 516          * for a previous field declaration.
 517          */
 518         protected boolean isVariableDeclarator() {
 519                 return getMask(MASK_FIELD_IS_VARIABLE_DECLARATOR);
 520         }
 521
 522         /**
 523          * @see DOMNode
 524          */
 525         protected DOMNode newDOMNode() {
 526                 return new DOMField();
 527         }
 528
 529         /**
 530          * Normalizes this <code>DOMNode</code>'s end position.
 531          */
 532         void normalizeEndPosition(ILineStartFinder finder, DOMNode next) {
 533                 if (next == null) {
 534                         // this node's end position includes all of the characters up
 535                         // to the end of the enclosing node
 536                         DOMNode parent = (DOMNode) getParent();
 537                         if (parent == null || parent instanceof DOMCompilationUnit) {
 538                                 setSourceRangeEnd(fDocument.length - 1);
 539                         } else {
 540                                 // parent is a type
 541                                 int temp = ((DOMType) parent).getCloseBodyPosition() - 1;
 542                                 setSourceRangeEnd(temp);
 543                                 fInsertionPosition = Math.max(finder.getLineStart(temp + 1),
 544                                                 getEndPosition());
 545                         }
 546                 } else {
 547                         // this node's end position is just before the start of the next
 548                         // node
 549                         // unless the next node is a field that is declared along with this
 550                         // one
 551                         int temp = next.getStartPosition() - 1;
 552                         fInsertionPosition = Math.max(finder.getLineStart(temp + 1),
 553                                         getEndPosition());
 554
 555                         next.normalizeStartPosition(getEndPosition(), finder);
 556                         if (next instanceof DOMField) {
 557                                 DOMField field = (DOMField) next;
 558                                 if (field.isVariableDeclarator()
 559                                                 && fTypeRange[0] == field.fTypeRange[0])
 560                                         return;
 561                         }
 562                         setSourceRangeEnd(next.getStartPosition() - 1);
 563                 }
 564         }
 565
 566         /**
 567          * Normalizes this <code>DOMNode</code>'s start position.
 568          */
 569         void normalizeStartPosition(int endPosition, ILineStartFinder finder) {
 570                 if (isVariableDeclarator()) {
 571                         // start position is end of last element
 572                         setStartPosition(fPreviousNode.getEndPosition() + 1);
 573                 } else {
 574                         super.normalizeStartPosition(endPosition, finder);
 575                 }
 576         }
 577
 578         /**
 579          * Offsets all the source indexes in this node by the given amount.
 580          */
 581         protected void offset(int offset) {
 582                 super.offset(offset);
 583                 offsetRange(fInitializerRange, offset);
 584                 offsetRange(fTypeRange, offset);
 585         }
 586
 587         /**
 588          * Separates this node from its parent and siblings, maintaining any ties
 589          * that this node has to the underlying document fragment.
 590          *
 591          * <p>
 592          * When a field with multiple declarators is removed, its declaration must
 593          * first be expanded.
 594          *
 595          * @see IDOMNode#remove()
 596          */
 597         public void remove() {
 598                 expand();
 599                 super.remove();
 600         }
 601
 602         /**
 603          * @see IDOMMember#setComment(String)
 604          */
 605         public void setComment(String comment) {
 606                 expand();
 607                 super.setComment(comment);
 608         }
 609
 610         /**
 611          * @see IDOMMember#setFlags(int)
 612          */
 613         public void setFlags(int flags) {
 614                 expand();
 615                 super.setFlags(flags);
 616         }
 617
 618         /**
 619          * Sets the state of this field declaration as having an initializer
 620          * expression.
 621          */
 622         protected void setHasInitializer(boolean hasInitializer) {
 623                 setMask(MASK_FIELD_HAS_INITIALIZER, hasInitializer);
 624         }
 625
 626         /**
 627          * @see IDOMField#setInitializer(char[])
 628          */
 629         public void setInitializer(String initializer) {
 630                 becomeDetailed();
 631                 fragment();
 632                 setHasInitializer(initializer != null);
 633                 fInitializer = initializer;
 634         }
 635
 636         /**
 637          * Sets the initializer range.
 638          */
 639         void setInitializerRange(int start, int end) {
 640                 fInitializerRange[0] = start;
 641                 fInitializerRange[1] = end;
 642         }
 643
 644         /**
 645          * Sets the state of this field declaration as being a secondary variable
 646          * declarator for a previous field declaration.
 647          */
 648         protected void setIsVariableDeclarator(boolean isVariableDeclarator) {
 649                 setMask(MASK_FIELD_IS_VARIABLE_DECLARATOR, isVariableDeclarator);
 650         }
 651
 652         /**
 653          * @see IDOMField#setName(char[])
 654          */
 655         public void setName(String name) throws IllegalArgumentException {
 656                 if (name == null) {
 657                         throw new IllegalArgumentException(Util.bind("element.nullName")); //$NON-NLS-1$
 658                 } else {
 659                         super.setName(name);
 660                         setTypeAltered(true);
 661                 }
 662         }
 663
 664         /**
 665          * @see IDOMField#setType(char[])
 666          */
 667         public void setType(String typeName) throws IllegalArgumentException {
 668                 if (typeName == null) {
 669                         throw new IllegalArgumentException(Util.bind("element.nullType")); //$NON-NLS-1$
 670                 }
 671                 becomeDetailed();
 672                 expand();
 673                 fragment();
 674                 setTypeAltered(true);
 675                 setNameAltered(true);
 676                 fType = typeName;
 677         }
 678
 679         /**
 680          * Sets the state of this field declaration as having the field type altered
 681          * from the original document.
 682          */
 683         protected void setTypeAltered(boolean typeAltered) {
 684                 setMask(MASK_FIELD_TYPE_ALTERED, typeAltered);
 685         }
 686
 687         /**
 688          * @see DOMNode#shareContents(DOMNode)
 689          */
 690         protected void shareContents(DOMNode node) {
 691                 super.shareContents(node);
 692                 DOMField field = (DOMField) node;
 693                 fInitializer = field.fInitializer;
 694                 fInitializerRange = rangeCopy(field.fInitializerRange);
 695                 fType = field.fType;
 696                 fTypeRange = rangeCopy(field.fTypeRange);
 697         }
 698
 699         /**
 700          * @see IDOMNode#toString()
 701          */
 702         public String toString() {
 703                 return "FIELD: " + getName(); //$NON-NLS-1$
 704         }
 705 }