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com.liferay.source.formatter.checks.JavaIfStatementCheck 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.petra.string.CharPool;
import com.liferay.petra.string.StringPool;
import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.Validator;
import com.liferay.portal.tools.ToolsUtil;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Hugo Huijser
*/
public class JavaIfStatementCheck extends IfStatementCheck {
@Override
protected String doProcess(
String fileName, String absolutePath, String content)
throws Exception {
Matcher matcher = _ifStatementPattern.matcher(content);
while (matcher.find()) {
String ifClause = matcher.group();
if (ifClause.contains("{\t")) {
continue;
}
String lineEnding = matcher.group(3);
if (lineEnding.equals(StringPool.SEMICOLON) &&
ifClause.contains("{\n")) {
continue;
}
String type = matcher.group(1);
if (!type.equals("while") &&
lineEnding.equals(StringPool.SEMICOLON)) {
addMessage(
fileName, "Incorrect " + type + " statement",
getLineCount(content, matcher.start()));
}
else {
String newIfClause = _formatIfClause(
ifClause, fileName, getLineCount(content, matcher.start()));
if (!ifClause.equals(newIfClause)) {
return StringUtil.replace(content, ifClause, newIfClause);
}
}
}
return content;
}
private String _fixIfClause(String ifClause, String line, int delta) {
if (StringUtil.count(ifClause, line) > 1) {
return ifClause;
}
String newLine = line;
String whitespace = StringPool.BLANK;
int whitespaceLength = Math.abs(delta);
while (whitespaceLength > 0) {
if (whitespaceLength >= 4) {
whitespace += StringPool.TAB;
whitespaceLength -= 4;
}
else {
whitespace += StringPool.SPACE;
whitespaceLength -= 1;
}
}
if (delta > 0) {
if (!line.contains(StringPool.TAB + whitespace)) {
newLine = StringUtil.replaceLast(
newLine, CharPool.TAB, StringPool.FOUR_SPACES);
}
newLine = StringUtil.replaceLast(
newLine, StringPool.TAB + whitespace, StringPool.TAB);
}
else {
newLine = StringUtil.replaceLast(
newLine, CharPool.TAB, StringPool.TAB + whitespace);
}
newLine = StringUtil.replaceLast(
newLine, StringPool.FOUR_SPACES, StringPool.TAB);
return StringUtil.replace(ifClause, line, newLine);
}
private String _formatIfClause(String ifClause) throws Exception {
String strippedQuotesIfClause = stripQuotes(ifClause);
if (strippedQuotesIfClause.contains("!(") ||
strippedQuotesIfClause.contains("//")) {
return ifClause;
}
UnsyncBufferedReader unsyncBufferedReader = new UnsyncBufferedReader(
new UnsyncStringReader(ifClause));
String line = null;
String previousLine = null;
int previousLineLength = 0;
int previousLineLeadingWhitespace = 0;
int previousLineLevel = 0;
boolean previousLineIsStartCriteria = true;
int baseLeadingWhitespace = 0;
int insideMethodCallExpectedWhitespace = 0;
int level = -1;
while ((line = unsyncBufferedReader.readLine()) != null) {
String originalLine = line;
String trimmedLine = StringUtil.trimLeading(line);
int x = _getIncorrectLineBreakPos(line, previousLine);
if (x != -1) {
String leadingWhitespace = line.substring(
0, line.indexOf(trimmedLine));
return StringUtil.replace(
ifClause, line,
StringBundler.concat(
line.substring(0, x), "\n", leadingWhitespace,
line.substring(x + 1)));
}
if ((previousLineLength > 0) && previousLineIsStartCriteria &&
(previousLineLevel >= 0) && previousLine.matches(".*[|&^]")) {
Matcher matcher = _ifStatementCriteriaPattern.matcher(
trimmedLine);
while (matcher.find()) {
if (ToolsUtil.isInsideQuotes(trimmedLine, matcher.end())) {
continue;
}
String linePart = trimmedLine.substring(0, matcher.end());
int linePartLevel = getLevel(linePart);
if ((linePartLevel <= 0) &&
((previousLineLength + linePart.length()) <
getMaxLineLength())) {
if (linePart.equals(trimmedLine)) {
return StringUtil.replace(
ifClause, previousLine + "\n" + originalLine,
previousLine + StringPool.SPACE + trimmedLine);
}
else {
String newPreviousLine =
previousLine + StringPool.SPACE + linePart;
String newLine = StringUtil.replaceFirst(
originalLine, linePart, StringPool.BLANK);
return StringUtil.replace(
ifClause, previousLine + "\n" + originalLine,
newPreviousLine + "\n" + newLine);
}
}
}
}
line = StringUtil.replace(
line, CharPool.TAB, StringPool.FOUR_SPACES);
int leadingWhitespace = line.length() - trimmedLine.length();
if (Validator.isNull(previousLine)) {
baseLeadingWhitespace =
line.indexOf(CharPool.OPEN_PARENTHESIS) + 1;
}
else if (previousLine.endsWith("|") || previousLine.endsWith("&") ||
previousLine.endsWith("^")) {
int expectedLeadingWhitespace = baseLeadingWhitespace + level;
if (leadingWhitespace != expectedLeadingWhitespace) {
return _fixIfClause(
ifClause, originalLine,
leadingWhitespace - expectedLeadingWhitespace);
}
}
else {
int expectedLeadingWhitespace = 0;
if (previousLine.contains(StringPool.TAB + "else if (")) {
expectedLeadingWhitespace = baseLeadingWhitespace + 3;
}
else if (previousLine.contains(StringPool.TAB + "if (")) {
expectedLeadingWhitespace = baseLeadingWhitespace + 4;
}
else if (previousLine.contains(StringPool.TAB + "while (")) {
expectedLeadingWhitespace = baseLeadingWhitespace + 5;
}
if (previousLine.endsWith(StringPool.COMMA) &&
(insideMethodCallExpectedWhitespace > 0)) {
if (previousLineLevel < 0) {
insideMethodCallExpectedWhitespace -= 4;
}
expectedLeadingWhitespace =
insideMethodCallExpectedWhitespace;
}
else {
if (expectedLeadingWhitespace == 0) {
expectedLeadingWhitespace =
previousLineLeadingWhitespace + 4;
}
if (previousLine.endsWith(StringPool.OPEN_PARENTHESIS)) {
insideMethodCallExpectedWhitespace =
expectedLeadingWhitespace;
}
}
if (leadingWhitespace != expectedLeadingWhitespace) {
return _fixIfClause(
ifClause, originalLine,
leadingWhitespace - expectedLeadingWhitespace);
}
}
if (line.endsWith(") {")) {
return ifClause;
}
int lineLevel = getLevel(trimmedLine);
level += lineLevel;
if (Validator.isNotNull(previousLine)) {
if (!previousLine.endsWith("|") &&
!previousLine.endsWith("&") &&
!previousLine.endsWith("^")) {
previousLineIsStartCriteria = false;
}
else {
previousLineIsStartCriteria = true;
}
}
previousLine = originalLine;
previousLineLength = line.length();
previousLineLevel = lineLevel;
previousLineLeadingWhitespace = leadingWhitespace;
}
return ifClause;
}
private String _formatIfClause(
String ifClause, String fileName, int lineCount)
throws Exception {
String ifClauseSingleLine = StringUtil.replace(
ifClause,
new String[] {
StringPool.TAB + StringPool.SPACE, StringPool.TAB,
StringPool.OPEN_PARENTHESIS + StringPool.NEW_LINE,
StringPool.NEW_LINE
},
new String[] {
StringPool.TAB, StringPool.BLANK, StringPool.OPEN_PARENTHESIS,
StringPool.SPACE
});
checkIfClauseParentheses(ifClauseSingleLine, fileName, lineCount);
return _formatIfClause(ifClause);
}
private int _getIncorrectLineBreakPos(String line, String previousLine) {
for (int x = line.length();;) {
int y = line.lastIndexOf(" || ", x - 1);
int z = line.lastIndexOf(" && ", x - 1);
x = Math.max(y, z);
if (x == -1) {
return x;
}
if (ToolsUtil.isInsideQuotes(line, x)) {
continue;
}
if (Validator.isNotNull(previousLine) &&
(previousLine.endsWith(StringPool.PERIOD) ||
(getLevel(line.substring(0, x)) < 0))) {
return x + 3;
}
if (!line.endsWith(" ||") && !line.endsWith(" &&")) {
continue;
}
if (getLevel(line.substring(x)) > 0) {
return x + 3;
}
}
}
private final Pattern _ifStatementCriteriaPattern = Pattern.compile(
".*?( [|&^]+( |\\Z)|\\) \\{\\Z)");
private final Pattern _ifStatementPattern = Pattern.compile(
"\t+(catch|(else )?if|while) \\(.*?(\\) \\{|;)\n", Pattern.DOTALL);
}
