com.liferay.source.formatter.checks.JavaEmptyLinesCheck Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.source.formatter.checks;
import com.liferay.portal.kernel.util.StringUtil;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Hugo Huijser
*/
public class JavaEmptyLinesCheck extends EmptyLinesCheck {
@Override
protected String doProcess(
String fileName, String absolutePath, String content) {
content = fixMissingEmptyLines(absolutePath, content);
content = fixMissingEmptyLinesAroundComments(content);
content = fixRedundantEmptyLines(content);
content = fixIncorrectEmptyLineBeforeCloseCurlyBrace(content);
content = fixMissingEmptyLineAfterSettingVariable(content);
content = _fixRedundantEmptyLineInLambdaExpression(content);
content = _fixIncorrectEmptyLineInsideStatement(content);
return content;
}
private String _fixIncorrectEmptyLineInsideStatement(String content) {
int pos = -1;
outerLoop:
while (true) {
int previousPos = pos;
pos = content.indexOf("\n\n", pos + 1);
if (pos == -1) {
return content;
}
if (previousPos == -1) {
continue;
}
String s1 = content.substring(previousPos, pos);
if (getLevel(s1) <= 0) {
continue;
}
String lineBefore = StringUtil.trim(
getLine(content, getLineCount(content, previousPos)));
if (lineBefore.startsWith("//")) {
continue;
}
String lineAfter = StringUtil.trim(
getLine(content, getLineCount(content, pos + 2)));
if (lineAfter.startsWith("//")) {
continue;
}
int x = s1.length();
while (true) {
x = s1.lastIndexOf("(", x - 1);
if (x == -1) {
break;
}
String s2 = s1.substring(x);
if (getLevel(s2) > 0) {
if (getLevel(s2, "{", "}") > 0) {
continue outerLoop;
}
String s3 = StringUtil.trim(s1.substring(0, x));
if (s3.endsWith("\ttry")) {
continue outerLoop;
}
break;
}
}
return StringUtil.replaceFirst(content, "\n\n", "\n", pos);
}
}
private String _fixRedundantEmptyLineInLambdaExpression(String content) {
Matcher matcher = _redundantEmptyLinePattern.matcher(content);
if (matcher.find()) {
return StringUtil.replaceFirst(
content, "\n\n", "\n", matcher.start());
}
return content;
}
private final Pattern _redundantEmptyLinePattern = Pattern.compile(
"-> \\{\n\n[\t ]*(?!// )\\S");
}
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