/*******************************************************************************
* Copyright (c) 2000, 2003 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.core.jdom;
import net.sourceforge.phpdt.core.Flags;
import net.sourceforge.phpdt.core.jdom.IDOMMember;
import net.sourceforge.phpdt.internal.compiler.env.IConstants;
import net.sourceforge.phpdt.internal.core.util.CharArrayBuffer;
import net.sourceforge.phpdt.internal.core.util.CharArrayOps;
/**
* DOMMember provides an implementation of IDOMMember.
*
* @see IDOMMember
* @see DOMNode
*/
abstract class DOMMember extends DOMNode implements IDOMMember {
/**
* The modifier flags for this member that can be analyzed with
* net.sourceforge.phpdt.core.Flags
*/
protected int fFlags = 0;
/**
* The member's comments when it has been altered from the contents in the
* document, otherwise null
.
*/
protected String fComment = null;
/**
* The original inclusive source range of the member's preceding comments in
* the document, or -1's if the member did not originally have a comment.
*/
protected int[] fCommentRange;
/**
* The member's modifiers textual representation when the modifiers (flags)
* have been altered from their original contents, otherwise
* null
.
*/
protected char[] fModifiers = null;
/**
* The original inclusive source range of the member's modifiers in the
* document, or -1's if the member did not originally have modifiers in the
* source code (that is, package default visibility).
*/
protected int[] fModifierRange;
/**
* Constructs an empty member node.
*/
DOMMember() {
}
/**
* Creates a new member document fragment on the given range of the
* document.
*
* @param document -
* the document containing this node's original contents
* @param sourceRange -
* a two element array of integers describing the entire
* inclusive source range of this node within its document.
* Contents start on and include the character at the first
* position. Contents end on and include the character at the
* last position. An array of -1's indicates this node's contents
* do not exist in the document.
* @param name -
* the identifier portion of the name of this node, or
* null
if this node does not have a name
* @param nameRange -
* a two element array of integers describing the entire
* inclusive source range of this node's name within its
* document, including any array qualifiers that might
* immediately follow the name.
* @param commentRange -
* a two element array describing the comments that precede the
* member declaration. The first matches the start of this node's
* sourceRange, and the second is the new-line or first
* non-whitespace character following the last comment. If no
* comments are present, this array contains two -1's.
* @param flags -
* an integer representing the modifiers for this member. The
* integer can be analyzed with net.sourceforge.phpdt.core.Flags
* @param modifierRange -
* a two element array describing the location of modifiers for
* this member within its source range. The first integer is the
* first character of the first modifier for this member, and the
* second integer is the last whitespace character preceeding the
* next part of this member declaration. If there are no
* modifiers present in this node's source code (that is, package
* default visibility), this array contains two -1's.
*/
DOMMember(char[] document, int[] sourceRange, String name, int[] nameRange,
int[] commentRange, int flags, int[] modifierRange) {
super(document, sourceRange, name, nameRange);
fFlags = flags;
fComment = null;
fCommentRange = commentRange;
fModifierRange = modifierRange;
setHasComment(commentRange[0] >= 0);
}
/**
* Appends the contents of this node to the given CharArrayBuffer, using the
* original document and indicies as a form for the current attribute values
* of this node.
*
*
* To facilitate the implementation of generating contents for members, the
* content of members is split into three sections - the header,
* declaration, and body sections. The header section includes any preceding
* comments and modifiers. The declaration section includes the portion of
* the member declaration that follows any modifiers and precedes the member
* body. The body section includes the member body and any trailing
* whitespace.
*
* @see DOMNode#appendFragmentedContents(CharArrayBuffer)
*/
protected void appendFragmentedContents(CharArrayBuffer buffer) {
if (isDetailed()) {
appendMemberHeaderFragment(buffer);
appendMemberDeclarationContents(buffer);
appendMemberBodyContents(buffer);
} else {
appendSimpleContents(buffer);
}
}
/**
* Appends this member's body contents to the given CharArrayBuffer. Body
* contents include the member body and any trailing whitespace.
*/
protected abstract void appendMemberBodyContents(CharArrayBuffer buffer);
/**
* Appends this member's declaration contents to the given CharArrayBuffer.
* The declaration contents includes the portion of this member that appears
* after any modifiers and precedes the body.
*/
protected abstract void appendMemberDeclarationContents(
CharArrayBuffer buffer);
/**
* Appends this member's header contents to the given CharArrayBuffer.
* Header contents include any preceding comments and modifiers.
*/
protected void appendMemberHeaderFragment(CharArrayBuffer buffer) {
int spaceStart, spaceEnd;
// space before comment
if (hasComment()) {
spaceStart = fSourceRange[0];
spaceEnd = fCommentRange[0];
if (spaceEnd > 0) {
buffer.append(fDocument, spaceStart, spaceEnd - spaceStart);
}
}
String fragment = getComment();
if (fragment != null) {
buffer.append(fragment);
}
if (fCommentRange[1] >= 0) {
spaceStart = fCommentRange[1] + 1;
} else {
spaceStart = fSourceRange[0];
}
if (fModifierRange[0] >= 0) {
spaceEnd = fModifierRange[0] - 1;
} else {
spaceEnd = getMemberDeclarationStartPosition() - 1;
}
if (spaceEnd >= spaceStart) {
buffer.append(fDocument, spaceStart, spaceEnd + 1 - spaceStart);
}
buffer.append(getModifiersText());
}
/**
* Appends the contents of this node to the given CharArrayBuffer, using the
* original document and indicies as a form for the current attribute values
* of this node. This method is called when this node is know not to have
* detailed source indexes.
*/
protected abstract void appendSimpleContents(CharArrayBuffer buffer);
/**
* Returns a copy of the given array with the new element appended to the
* end of the array.
*/
protected String[] appendString(String[] list, String element) {
String[] copy = new String[list.length + 1];
System.arraycopy(list, 0, copy, 0, list.length);
copy[list.length] = element;
return copy;
}
/**
* Returns a String
describing the modifiers for this member,
* ending with whitespace (if not empty). This value serves as a replacement
* value for the member's modifier range when the modifiers have been
* altered from their original contents.
*/
protected char[] generateFlags() {
char[] flags = Flags.toString(getFlags()).toCharArray();
if (flags.length == 0) {
return flags;
} else {
return CharArrayOps.concat(flags, new char[] { ' ' });
}
}
/**
* @see IDOMMember#getComment()
*/
public String getComment() {
becomeDetailed();
if (hasComment()) {
if (fComment != null) {
return fComment;
} else {
return CharArrayOps.substring(fDocument, fCommentRange[0],
fCommentRange[1] + 1 - fCommentRange[0]);
}
} else {
return null;
}
}
/**
* @see IDOMMember#getFlags()
*/
public int getFlags() {
return fFlags;
}
/**
* Returns the location of the first character in the member's declaration
* section.
*
* @see DOMMember#getMemberDeclarationContents()
* @see DOMMember#getFragmentedContents()
*/
protected abstract int getMemberDeclarationStartPosition();
/**
* Returns the String to be used for this member's flags when generating
* contents - either the original contents in the document or the
* replacement value.
*/
protected char[] getModifiersText() {
if (fModifiers == null) {
if (fModifierRange[0] < 0) {
return null;
} else {
return CharArrayOps.subarray(fDocument, fModifierRange[0],
fModifierRange[1] + 1 - fModifierRange[0]);
}
} else {
return fModifiers;
}
}
/**
* Returns true if this member currently has a body.
*/
protected boolean hasBody() {
return getMask(MASK_HAS_BODY);
}
/**
* Returns true if this member currently has a comment.
*/
protected boolean hasComment() {
return getMask(MASK_HAS_COMMENT);
}
/**
* Offsets all the source indexes in this node by the given amount.
*/
protected void offset(int offset) {
super.offset(offset);
offsetRange(fCommentRange, offset);
offsetRange(fModifierRange, offset);
}
/**
* @see IDOMMember#setComment(String)
*/
public void setComment(String comment) {
becomeDetailed();
fComment = comment;
fragment();
setHasComment(comment != null);
/* see 1FVIJAH */
if (comment != null) {
String commentString = new String(comment);
if (commentString.indexOf("@deprecated") >= 0) { //$NON-NLS-1$
fFlags = fFlags | IConstants.AccDeprecated;
return;
}
}
fFlags = fFlags & (~IConstants.AccDeprecated);
}
/**
* @see IDOMMember#setFlags(int)
*/
public void setFlags(int flags) {
becomeDetailed();
if (Flags.isDeprecated(fFlags)) {
fFlags = flags | IConstants.AccDeprecated;
} else {
fFlags = flags & (~IConstants.AccDeprecated);
}
fragment();
fModifiers = generateFlags();
}
/**
* Sets the state of this member declaration as having a body.
*/
protected void setHasBody(boolean hasBody) {
setMask(MASK_HAS_BODY, hasBody);
}
/**
* Sets the state of this member declaration as having a preceding comment.
*/
protected void setHasComment(boolean hasComment) {
setMask(MASK_HAS_COMMENT, hasComment);
}
/**
* Sets the original position of the first character of this node's contents
* in its document. This method is only used during DOM creation while
* normalizing the source range of each node.
*
* Synchronize the start of the comment position with the start of the node.
*/
protected void setStartPosition(int start) {
if (fCommentRange[0] >= 0) {
fCommentRange[0] = start;
}
super.setStartPosition(start);
}
/**
* @see DOMNode#shareContents(DOMNode)
*/
protected void shareContents(DOMNode node) {
super.shareContents(node);
DOMMember member = (DOMMember) node;
fComment = member.fComment;
fCommentRange = rangeCopy(member.fCommentRange);
fFlags = member.fFlags;
fModifiers = member.fModifiers;
fModifierRange = rangeCopy(member.fModifierRange);
}
}