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/*******************************************************************************
* Copyright (c) 2014, 2015 Mateusz Matela and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Mateusz Matela - [formatter] Formatter does not format Java code correctly, especially when max line width is set - https://bugs.eclipse.org/303519
* Mateusz Matela - [formatter] follow up bug for comments - https://bugs.eclipse.org/458208
* Mateusz Matela - NPE in WrapExecutor during Java text formatting - https://bugs.eclipse.org/465669
*******************************************************************************/
package org.eclipse.jdt.internal.formatter.linewrap;
import static org.eclipse.jdt.internal.compiler.parser.TerminalTokens.TokenNameCOMMENT_BLOCK;
import static org.eclipse.jdt.internal.compiler.parser.TerminalTokens.TokenNameCOMMENT_JAVADOC;
import static org.eclipse.jdt.internal.compiler.parser.TerminalTokens.TokenNameCOMMENT_LINE;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
import org.eclipse.jdt.internal.formatter.DefaultCodeFormatterOptions;
import org.eclipse.jdt.internal.formatter.Token;
import org.eclipse.jdt.internal.formatter.TokenManager;
import org.eclipse.jdt.internal.formatter.TokenTraverser;
import org.eclipse.jdt.internal.formatter.Token.WrapMode;
import org.eclipse.jdt.internal.formatter.Token.WrapPolicy;
public class WrapExecutor {
private static class WrapInfo {
public int wrapTokenIndex;
public int indent;
public WrapInfo(int wrapIndex, int indent) {
this.wrapTokenIndex = wrapIndex;
this.indent = indent;
}
public WrapInfo() {
// empty constructor
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + this.indent;
result = prime * result + this.wrapTokenIndex;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
WrapInfo other = (WrapInfo) obj;
if (this.indent != other.indent)
return false;
if (this.wrapTokenIndex != other.wrapTokenIndex)
return false;
return true;
}
}
private static class WrapResult {
public static final WrapResult NO_WRAP_NEEDED = new WrapResult(0, 0, null);
public final double penalty;
public final int totalExtraLines;
/**
* Contains information about the next wrap in the result or null if this is the last wrap.
* Can be used as a key in {@link WrapExecutor#wrapSearchResults} to retrieve the next wraps.
*/
public final WrapInfo nextWrap;
WrapResult(double penalty, int extraLines, WrapInfo nextWrap) {
this.penalty = penalty;
this.totalExtraLines = extraLines;
this.nextWrap = nextWrap;
}
}
private static class WrapRestartThrowable extends Throwable {
private static final long serialVersionUID = -2980600077230803443L; // backward compatible
public final int topPriorityWrap;
public WrapRestartThrowable(int topPriorityWrap) {
super(null, null, false, false);
this.topPriorityWrap = topPriorityWrap;
}
}
private class LineAnalyzer extends TokenTraverser {
final private CommentWrapExecutor commentWrapper;
private int lineIndent;
int firstPotentialWrap;
int extraLines;
boolean lineExceeded;
final List extraLinesPerComment = new ArrayList();
final List topPriorityGroupStarts = new ArrayList();
private int currentTopPriorityGroupEnd;
private boolean isNLSTagInLine;
public LineAnalyzer(TokenManager tokenManager, DefaultCodeFormatterOptions options) {
this.commentWrapper = new CommentWrapExecutor(tokenManager, options);
}
/**
* @return index of the last token in line
*/
public int analyzeLine(int startIndex, int indent) {
Token startToken = WrapExecutor.this.tm.get(startIndex);
this.counter = WrapExecutor.this.tm.toIndent(indent, startToken.isWrappable());
this.lineIndent = indent;
this.firstPotentialWrap = -1;
this.extraLines = 0;
this.extraLinesPerComment.clear();
this.topPriorityGroupStarts.clear();
this.currentTopPriorityGroupEnd = -1;
this.isNLSTagInLine = false;
return WrapExecutor.this.tm.traverse(startIndex, this);
}
@Override
protected boolean token(Token token, int index) {
if (token.tokenType == TokenNameCOMMENT_LINE)
return false;
if (token.hasNLSTag())
this.isNLSTagInLine = true;
if (token.isWrappable()) {
WrapPolicy wrapPolicy = token.getWrapPolicy();
if (wrapPolicy.wrapMode == WrapMode.TOP_PRIORITY && getLineBreaksBefore() == 0
&& index > this.currentTopPriorityGroupEnd) {
this.topPriorityGroupStarts.add(index);
this.currentTopPriorityGroupEnd = wrapPolicy.groupEndIndex;
}
if (this.firstPotentialWrap < 0 && getWrapIndent(token) < this.counter)
this.firstPotentialWrap = index;
}
if (token.getAlign() > 0) {
this.counter = token.getAlign();
} else if (isSpaceBefore() && getLineBreaksBefore() == 0 && index > 0) {
this.counter++;
}
if (token.isComment()) {
this.counter = this.commentWrapper.wrapMultiLineComment(token, this.counter, true, this.isNLSTagInLine);
this.extraLines += this.commentWrapper.getLinesCount() - 1;
this.extraLinesPerComment.add(this.commentWrapper.getLinesCount() - 1);
} else {
this.counter += WrapExecutor.this.tm.getLength(token, this.counter);
}
this.lineExceeded = this.counter > WrapExecutor.this.options.page_width;
if (this.lineExceeded && this.firstPotentialWrap >= 0) {
return false;
}
if (!token.isNextLineOnWrap())
token.setIndent(this.lineIndent);
boolean isLineEnd = getLineBreaksAfter() > 0 || getNext() == null;
assert !(token.isNextLineOnWrap() && !isLineEnd);
return !isLineEnd;
}
public int getLastPosition() {
return this.counter;
}
}
private class NLSTagHandler extends TokenTraverser {
private final ArrayList nlsTags = new ArrayList();
public NLSTagHandler() {
// nothing to do
}
@Override
protected boolean token(final Token token, final int index) {
if (token.hasNLSTag())
this.nlsTags.add(token.getNLSTag());
if (getLineBreaksAfter() > 0 || getNext() == null) {
// make sure there's a line comment with all necessary NLS tags
Token lineComment = token;
if (token.tokenType != TokenNameCOMMENT_LINE) {
if (this.nlsTags.isEmpty())
return true;
lineComment = new Token(token.originalEnd + 1, token.originalEnd + 1, TokenNameCOMMENT_LINE);
lineComment.breakAfter();
lineComment.spaceBefore();
lineComment.setAlign(WrapExecutor.this.tm.getNLSAlign(index));
lineComment.setInternalStructure(new ArrayList());
WrapExecutor.this.tm.insert(index + 1, lineComment);
structureChanged();
return true; // will fill the line comment structure in next step
}
List structure = lineComment.getInternalStructure();
if (structure == null) {
if (this.nlsTags.isEmpty())
return true;
structure = new ArrayList();
structure.add(lineComment);
lineComment.setInternalStructure(structure);
}
boolean isPrefixMissing = false;
for (int i = 0; i < structure.size(); i++) {
Token fragment = structure.get(i);
// remove NLS tags that are not associated with this line
// (these have been added on wrapped lines earlier)
if (fragment.hasNLSTag()) {
if (!this.nlsTags.remove(fragment)) {
if (i == 0)
isPrefixMissing = true;
structure.remove(i--);
} else {
isPrefixMissing = false;
}
} else if (isPrefixMissing) {
// remove trailing whitespace
int pos = fragment.originalStart;
while (pos <= fragment.originalEnd
&& ScannerHelper.isWhitespace(WrapExecutor.this.tm.charAt(pos)))
pos++;
if (pos > fragment.originalEnd) {
structure.remove(i--);
continue;
}
if (pos > fragment.originalStart) {
fragment = new Token(pos, fragment.originalEnd, TokenNameCOMMENT_LINE);
structure.set(i, fragment);
}
String fragmentString = WrapExecutor.this.tm.toString(fragment);
if (!fragmentString.startsWith("//")) { //$NON-NLS-1$
// forge a prefix
Token prefix = new Token(lineComment.originalStart, lineComment.originalStart + 1,
TokenNameCOMMENT_LINE);
prefix.spaceBefore();
structure.add(i, prefix);
}
isPrefixMissing = false;
}
}
// add all remaining tags in this line
// (these are currently in a future line comment but will be removed)
structure.addAll(this.nlsTags);
if (structure.isEmpty()) { // all the tags have been moved to other lines
WrapExecutor.this.tm.remove(index);
structureChanged();
}
this.nlsTags.clear();
}
return true;
}
}
private final static int[] EMPTY_ARRAY = {};
private final HashMap wrapSearchResults = new HashMap();
private final HashSet usedTopPriorityWraps = new HashSet();
private final LineAnalyzer lineAnalyzer;
final TokenManager tm;
final DefaultCodeFormatterOptions options;
private final WrapInfo wrapInfoTemp = new WrapInfo();
public WrapExecutor(TokenManager tokenManager, DefaultCodeFormatterOptions options) {
this.tm = tokenManager;
this.options = options;
this.lineAnalyzer = new LineAnalyzer(tokenManager, options);
}
public void executeWraps() {
int index = 0;
while (index < this.tm.size()) {
Token token = this.tm.get(index);
while (true) {
try {
int currentIndent = getWrapIndent(token);
this.wrapSearchResults.clear();
index = applyWraps(index, currentIndent);
break;
} catch (WrapRestartThrowable e) {
handleTopPriorityWraps(e);
}
}
this.wrapSearchResults.clear();
this.usedTopPriorityWraps.clear();
}
this.tm.traverse(0, new NLSTagHandler());
}
private int applyWraps(int index, int indent) throws WrapRestartThrowable {
WrapInfo wrapInfo = findWrapsCached(index, indent).nextWrap;
Token token = this.tm.get(index);
index++;
token.setIndent(indent);
int groupEnd = token.getWrapPolicy() != null ? token.getWrapPolicy().groupEndIndex : -1;
int separateLinesOnWrapFrom = -1;
while (index < this.tm.size()) {
token = this.tm.get(index);
if (token.isNextLineOnWrap() && this.tm.get(this.tm.findFirstTokenInLine(index)).isWrappable()) {
token.breakBefore();
return index;
}
if (separateLinesOnWrapFrom >= 0
&& token == this.tm.get(separateLinesOnWrapFrom).getSeparateLinesOnWrapUntil()) {
separateLinesOnWrapFrom = -1;
}
if (separateLinesOnWrapFrom == -1 && token.getSeparateLinesOnWrapUntil() != null) {
separateLinesOnWrapFrom = index;
}
while (wrapInfo != null && wrapInfo.wrapTokenIndex < index)
wrapInfo = this.wrapSearchResults.get(wrapInfo).nextWrap;
if (wrapInfo != null && wrapInfo.wrapTokenIndex == index) {
checkSeparateLinesOnWrap(separateLinesOnWrapFrom);
token.breakBefore();
handleOnColumnIndent(index, token.getWrapPolicy());
checkTopPriorityWraps(index);
index = applyWraps(index, wrapInfo.indent);
continue;
}
boolean isNewLine = this.tm.get(index - 1).getLineBreaksAfter() > 0 || token.getLineBreaksBefore() > 0;
if (isNewLine) {
if (token.getWrapPolicy() != null) {
checkSeparateLinesOnWrap(separateLinesOnWrapFrom);
handleOnColumnIndent(index, token.getWrapPolicy());
checkTopPriorityWraps(index);
int newIndent = getWrapIndent(token);
if (newIndent < indent)
return index;
wrapInfo = findWrapsCached(index, newIndent).nextWrap;
if (newIndent > indent) {
index = applyWraps(index, newIndent);
continue;
}
} else if (index > groupEnd) {
return index;
}
} else {
checkForceWrap(token, index, indent);
}
token.setIndent(indent);
index++;
}
return index;
}
private WrapResult findWrapsCached(int startTokenIndex, int indent) throws WrapRestartThrowable {
this.wrapInfoTemp.wrapTokenIndex = startTokenIndex;
this.wrapInfoTemp.indent = indent;
WrapResult wrapResult = this.wrapSearchResults.get(this.wrapInfoTemp);
if (wrapResult == null && this.wrapSearchResults.containsKey(this.wrapInfoTemp))
return null; // no wrap needed
// pre-existing result may be based on different wrapping of earlier tokens and therefore be wrong
WrapResult wr = wrapResult;
while (wr != null && wr.nextWrap != null) {
WrapInfo wi = wr.nextWrap;
Token token = this.tm.get(wi.wrapTokenIndex);
if (token.getWrapPolicy().wrapParentIndex < startTokenIndex && getWrapIndent(token) != wi.indent) {
wrapResult = null;
break;
}
wr = this.wrapSearchResults.get(wi);
}
if (wrapResult == null) {
Token token = this.tm.get(startTokenIndex);
boolean wasLineBreak = token.getLineBreaksBefore() > 0;
token.breakBefore();
try {
wrapResult = findWraps(startTokenIndex, indent);
} finally {
if (!wasLineBreak)
token.clearLineBreaksBefore();
}
WrapInfo wrapInfo = new WrapInfo(startTokenIndex, indent);
this.wrapSearchResults.put(wrapInfo, wrapResult);
}
return wrapResult;
}
/**
* The main algorithm that looks for optimal places to wrap.
* Calls itself recursively to get results for wrapped sub-lines.
*/
private WrapResult findWraps(int wrapTokenIndex, int indent) throws WrapRestartThrowable {
final int lastIndex = this.lineAnalyzer.analyzeLine(wrapTokenIndex, indent);
final boolean lineExceeded = this.lineAnalyzer.lineExceeded;
final int lastPosition = this.lineAnalyzer.getLastPosition();
int extraLines = this.lineAnalyzer.extraLines;
final int firstPotentialWrap = this.lineAnalyzer.firstPotentialWrap;
final int[] extraLinesPerComment = toArray(this.lineAnalyzer.extraLinesPerComment);
int commentIndex = extraLinesPerComment.length;
final int[] topPriorityGroupStarts = toArray(this.lineAnalyzer.topPriorityGroupStarts);
int topPriorityIndex = topPriorityGroupStarts.length - 1;
int nearestGroupEnd = topPriorityIndex == -1 ? 0
: this.tm.get(topPriorityGroupStarts[topPriorityIndex]).getWrapPolicy().groupEndIndex;
double bestTotalPenalty = getWrapPenalty(wrapTokenIndex, indent, lastIndex + 1, -1, WrapResult.NO_WRAP_NEEDED);
int bestExtraLines = lineExceeded ? Integer.MAX_VALUE : extraLines; // if line is exceeded, accept every wrap
int bestNextWrap = -1;
int bestIndent = 0;
if (!lineExceeded && (!this.options.join_wrapped_lines || !this.options.wrap_outer_expressions_when_nested))
return new WrapResult(bestTotalPenalty, bestExtraLines, null);
if ((!lineExceeded || firstPotentialWrap < 0) && lastIndex + 1 < this.tm.size()) {
Token nextLineToken = this.tm.get(lastIndex + 1);
if (nextLineToken.getWrapPolicy() != null && nextLineToken.getWrapPolicy().wrapMode != WrapMode.FORCED
&& (this.tm.get(lastIndex).isComment() || nextLineToken.isComment())) {
// this might be a pre-existing wrap forced by a comment, calculate penalties as normal
bestIndent = getWrapIndent(nextLineToken);
bestNextWrap = lastIndex + 1;
WrapResult wrapResult = findWrapsCached(bestNextWrap, bestIndent);
bestTotalPenalty = getWrapPenalty(wrapTokenIndex, indent, bestNextWrap, bestIndent, wrapResult);
bestExtraLines = extraLines + wrapResult.totalExtraLines;
}
}
if (firstPotentialWrap < 0 && lineExceeded) {
if (topPriorityGroupStarts.length > 0) {
checkTopPriorityWraps(topPriorityGroupStarts[0]);
}
// Report high number of extra lines to encourage the algorithm to look
// for other wraps (maybe something will result in smaller indent and line will fit).
// This should be achieved with penalty, but it's hard to choose a good penalty value here.
if (bestExtraLines == Integer.MAX_VALUE)
bestExtraLines = extraLines + lastPosition;
else
bestExtraLines += lastPosition;
}
for (int i = lastIndex; firstPotentialWrap >= 0 && i >= firstPotentialWrap; i--) {
Token token = this.tm.get(i);
if (commentIndex > 0
&& (token.tokenType == TokenNameCOMMENT_BLOCK || token.tokenType == TokenNameCOMMENT_JAVADOC)) {
extraLines -= extraLinesPerComment[--commentIndex];
}
if (topPriorityIndex >= 0 && i <= nearestGroupEnd) {
if (i > topPriorityGroupStarts[topPriorityIndex])
continue;
assert i == topPriorityGroupStarts[topPriorityIndex];
topPriorityIndex--;
nearestGroupEnd = topPriorityIndex == -1 ? 0
: this.tm.get(topPriorityGroupStarts[topPriorityIndex]).getWrapPolicy().groupEndIndex;
}
if (!token.isWrappable())
continue;
int nextWrapIndent = getWrapIndent(token);
WrapResult nextWrapResult = findWrapsCached(i, nextWrapIndent);
double totalPenalty = getWrapPenalty(wrapTokenIndex, indent, i, nextWrapIndent, nextWrapResult);
int totalExtraLines = extraLines + nextWrapResult.totalExtraLines;
boolean isBetter = totalExtraLines < bestExtraLines || bestExtraLines == Integer.MAX_VALUE;
if (!isBetter && totalExtraLines == bestExtraLines)
isBetter = totalPenalty < bestTotalPenalty || bestTotalPenalty == Double.MAX_VALUE;
if (isBetter) {
bestTotalPenalty = totalPenalty;
bestExtraLines = totalExtraLines;
bestNextWrap = i;
bestIndent = nextWrapIndent;
if (!this.options.wrap_outer_expressions_when_nested)
break;
}
}
if (bestNextWrap == -1 && lineExceeded && topPriorityGroupStarts.length > 0) {
checkTopPriorityWraps(topPriorityGroupStarts[0]);
}
return new WrapResult(bestTotalPenalty, bestExtraLines,
bestNextWrap == -1 ? null : new WrapInfo(bestNextWrap, bestIndent));
}
private double getWrapPenalty(int lineStartIndex, int lineIndent, int wrapIndex, int wrapIndent,
WrapResult wrapResult) throws WrapRestartThrowable {
WrapPolicy wrapPolicy = null;
Token wrapToken = null;
if (wrapIndex < this.tm.size()) {
wrapToken = this.tm.get(wrapIndex);
wrapPolicy = wrapToken.getWrapPolicy();
if (wrapIndent < 0)
wrapIndent = getWrapIndent(this.tm.get(wrapIndex));
}
double penalty = wrapToken != null && wrapToken.isWrappable() ? getPenalty(wrapPolicy) : 0;
// First parameter in method invocation has higher penalty to make wrapping more similar to the old formatter.
// This can lead to an undesired effect like this (should wrap aaaaaa and bbbbbb, not .bar):
// foo.foo
// .bar(aaaaaa,
// bbbbbbb);
if (wrapIndent > lineIndent)
penalty *= 1 + 3.0 / 16;
// Avoid ugly formations like this (bar2 should be wrapped):
// foooooo(bar1(aaaaaa,
// bbb), bar2(aaa,
// bbbbbb)
// Assuming lineStartIndex is at bbb, look for unwrapped bar2 and if found,
// add more penalty than if it was wrapped.
Token lineStartToken = this.tm.get(lineStartIndex);
WrapPolicy lineStartWrapPolicy = lineStartToken.getWrapPolicy();
if (wrapToken != null && wrapToken.isWrappable() && lineStartToken.isWrappable()) {
for (int i = lineStartIndex + 1; i < wrapIndex; i++) {
WrapPolicy intermediatePolicy = this.tm.get(i).getWrapPolicy();
if (intermediatePolicy != null
&& intermediatePolicy.structureDepth < lineStartWrapPolicy.structureDepth
&& intermediatePolicy.structureDepth < wrapPolicy.structureDepth) {
penalty += getPenalty(intermediatePolicy) * 1.25;
}
}
}
// In the previous example, bar1 should be wrapped too, to emphasize that bar1 and bar2 are the same level.
// Assuming wrapIndex is at bar1, check if there is a higher depth wrap (bbb) followed by
// a wrap of the same parent (bar2). If so, then bar1 must be wrapped (so give it negative penalty).
// Update: Actually, every token that is followed by a higher level depth wrap should be also wrapped,
// as long as this next wrap is not the last in line and the token is not the first in its wrap group.
WrapInfo nextWrap = wrapResult.nextWrap;
boolean checkDepth = wrapToken != null && wrapToken.isWrappable()
&& (lineStartWrapPolicy == null || wrapPolicy.structureDepth >= lineStartWrapPolicy.structureDepth);
double penaltyDiff = 0;
while (checkDepth && nextWrap != null) {
WrapPolicy nextPolicy = this.tm.get(nextWrap.wrapTokenIndex).getWrapPolicy();
if (nextPolicy.wrapParentIndex == wrapPolicy.wrapParentIndex
|| (penaltyDiff != 0 && !wrapPolicy.isFirstInGroup)) {
penalty -= penaltyDiff * (1 + 1.0 / 64);
break;
}
if (nextPolicy.structureDepth <= wrapPolicy.structureDepth)
break;
penaltyDiff = Math.max(penaltyDiff, getPenalty(nextPolicy));
nextWrap = findWrapsCached(nextWrap.wrapTokenIndex, nextWrap.indent).nextWrap;
}
return penalty + wrapResult.penalty;
}
private double getPenalty(WrapPolicy policy) {
return Math.exp(policy.structureDepth) * policy.penaltyMultiplier;
}
private void checkSeparateLinesOnWrap(final int separateLinesOnWrapFrom) throws WrapRestartThrowable {
if (separateLinesOnWrapFrom < 0)
return;
Token next = this.tm.get(separateLinesOnWrapFrom + 1);
Token end = this.tm.get(separateLinesOnWrapFrom).getSeparateLinesOnWrapUntil();
if (next.getLineBreaksBefore() > 0 && end.getLineBreaksBefore() > 0)
return;
if (next.getWrapPolicy() == null || next.getWrapPolicy().wrapMode == WrapMode.FORCED) {
next.setWrapPolicy(new WrapPolicy(WrapMode.WHERE_NECESSARY, separateLinesOnWrapFrom,
this.options.indentation_size));
}
next.breakBefore();
if (end.getWrapPolicy() == null || end.getWrapPolicy().wrapMode == WrapMode.FORCED) {
end.setWrapPolicy(new WrapPolicy(WrapMode.WHERE_NECESSARY, separateLinesOnWrapFrom, 0));
}
end.breakBefore();
throw new WrapRestartThrowable(-1);
}
private void checkForceWrap(Token token, int index, int currentIndent) throws WrapRestartThrowable {
// A token that will have smaller indent when wrapped than the current line indent,
// should be wrapped because it's a low depth token following some complex wraps of higher depth.
// This rule could not be implemented in getWrapPenalty() because a token's wrap indent may depend
// on wraps in previous lines, which are not determined yet when the token's penalty is calculated.
if (token.isWrappable() && this.options.wrap_outer_expressions_when_nested
&& getWrapIndent(token) < currentIndent) {
WrapPolicy lineStartPolicy = this.tm.get(this.tm.findFirstTokenInLine(index, false, true)).getWrapPolicy();
if (lineStartPolicy != null && lineStartPolicy.wrapMode != WrapMode.FORCED) {
token.breakBefore();
throw new WrapRestartThrowable(-1);
}
}
}
private void checkTopPriorityWraps(int wrapIndex) throws WrapRestartThrowable {
WrapPolicy wrapPolicy = this.tm.get(wrapIndex).getWrapPolicy();
if (wrapPolicy != null && wrapPolicy.wrapMode == WrapMode.TOP_PRIORITY
&& !this.usedTopPriorityWraps.contains(wrapPolicy))
throw new WrapRestartThrowable(wrapIndex);
}
private void handleTopPriorityWraps(WrapRestartThrowable restartException) {
int wrapIndex = restartException.topPriorityWrap;
if (wrapIndex < 0)
return;
WrapPolicy wrapPolicy = this.tm.get(wrapIndex).getWrapPolicy();
int parentIndex = wrapPolicy.wrapParentIndex;
for (int i = wrapIndex; i > parentIndex; i--) {
Token token = this.tm.get(i);
wrapPolicy = token.getWrapPolicy();
if (wrapPolicy != null && wrapPolicy.wrapParentIndex == parentIndex) {
if (wrapPolicy.wrapMode == WrapMode.TOP_PRIORITY) {
token.breakBefore();
this.usedTopPriorityWraps.add(wrapPolicy);
}
if (wrapPolicy.isFirstInGroup)
break;
}
}
boolean breakAfterPrevious = false;
for (int i = wrapIndex + 1; i < this.tm.size(); i++) {
Token token = this.tm.get(i);
wrapPolicy = token.getWrapPolicy();
if (wrapPolicy == null && (token.getLineBreaksBefore() > 0 || breakAfterPrevious)) {
break;
} else if (wrapPolicy != null && wrapPolicy.wrapParentIndex == parentIndex) {
if (wrapPolicy.isFirstInGroup)
break;
if (wrapPolicy.wrapMode == WrapMode.TOP_PRIORITY) {
token.breakBefore();
this.usedTopPriorityWraps.add(wrapPolicy);
}
}
breakAfterPrevious = token.getLineBreaksAfter() > 0;
}
}
private int[] toArray(List list) {
if (list.isEmpty())
return EMPTY_ARRAY;
int[] result = new int[list.size()];
int i = 0;
for (int item : list) {
result[i++] = item;
}
return result;
}
private void handleOnColumnIndent(int tokenIndex, WrapPolicy wrapPolicy) {
if (wrapPolicy != null && wrapPolicy.indentOnColumn && !wrapPolicy.isFirstInGroup
&& this.options.tab_char == DefaultCodeFormatterOptions.TAB
&& !this.options.use_tabs_only_for_leading_indentations) {
// special case: first wrap in a group should be aligned on column even if it's not wrapped
for (int i = tokenIndex - 1; i >= 0; i--) {
Token token = this.tm.get(i);
WrapPolicy wrapPolicy2 = token.getWrapPolicy();
if (wrapPolicy2 != null && wrapPolicy2.isFirstInGroup
&& wrapPolicy2.wrapParentIndex == wrapPolicy.wrapParentIndex) {
token.setAlign(getWrapIndent(token));
break;
}
}
}
}
int getWrapIndent(Token token) {
WrapPolicy policy = token.getWrapPolicy();
if (policy == null)
return token.getIndent();
if (this.options.never_indent_line_comments_on_first_column && token.tokenType == TokenNameCOMMENT_LINE
&& token.getIndent() == 0)
return 0;
if (this.options.never_indent_block_comments_on_first_column && token.tokenType == TokenNameCOMMENT_BLOCK
&& token.getIndent() == 0)
return 0;
Token wrapParent = this.tm.get(policy.wrapParentIndex);
int wrapIndent = wrapParent.getIndent();
if (policy.indentOnColumn) {
wrapIndent = this.tm.getPositionInLine(policy.wrapParentIndex);
wrapIndent += this.tm.getLength(wrapParent, wrapIndent);
if (wrapParent.isSpaceAfter() || this.tm.get(policy.wrapParentIndex + 1).isSpaceBefore())
wrapIndent++;
}
wrapIndent += policy.extraIndent;
return this.tm.toIndent(wrapIndent, true);
}
}
