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com.liferay.source.formatter.checkstyle.checks.ReferenceAnnotationCheck 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.checkstyle.checks;
import com.liferay.petra.string.StringBundler;
import com.liferay.portal.kernel.util.StringUtil;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.FullIdent;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
import com.puppycrawl.tools.checkstyle.utils.AnnotationUtil;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Hugo Huijser
*/
public class ReferenceAnnotationCheck extends BaseCheck {
@Override
public int[] getDefaultTokens() {
return new int[] {TokenTypes.CLASS_DEF};
}
@Override
protected void doVisitToken(DetailAST detailAST) {
DetailAST parentDetailAST = detailAST.getParent();
if (parentDetailAST != null) {
return;
}
List importNames = getImportNames(detailAST);
if (!importNames.contains(
"org.osgi.service.component.annotations.Reference")) {
return;
}
List detailASTList = getAllChildTokens(
detailAST, true, TokenTypes.METHOD_DEF, TokenTypes.VARIABLE_DEF);
for (DetailAST curDetailAST : detailASTList) {
_checkReferenceAnnotation(curDetailAST);
}
}
private void _checkDynamicMethod(
DetailAST classDefinitionDetailAST, DetailAST methodDefinitionDetailAST,
String methodName, String defaultUnbindMethodName) {
String methodBody = _getMethodBody(methodDefinitionDetailAST);
Matcher matcher = _referenceMethodContentPattern.matcher(
StringUtil.trim(methodBody));
if (!matcher.find()) {
if (!_containsMethod(
classDefinitionDetailAST, defaultUnbindMethodName)) {
log(
methodDefinitionDetailAST,
_MSG_MISSING_DYNAMIC_POLICY_UNBIND);
}
return;
}
String variableName = matcher.group(1);
List variableDefinitionDetailASTList = getAllChildTokens(
classDefinitionDetailAST, true, TokenTypes.VARIABLE_DEF);
for (DetailAST variableDefinitionDetailAST :
variableDefinitionDetailASTList) {
DetailAST identDetailAST =
variableDefinitionDetailAST.findFirstToken(TokenTypes.IDENT);
if (!variableName.equals(identDetailAST.getText())) {
continue;
}
if (AnnotationUtil.containsAnnotation(
variableDefinitionDetailAST, "Reference")) {
return;
}
DetailAST modifiersDetailAST =
variableDefinitionDetailAST.findFirstToken(
TokenTypes.MODIFIERS);
if (!modifiersDetailAST.branchContains(TokenTypes.LITERAL_STATIC)) {
log(
methodDefinitionDetailAST, _MSG_MOVE_REFERENCE, methodName,
variableName);
}
}
}
private void _checkReferenceAnnotation(DetailAST detailAST) {
DetailAST annotationDetailAST = AnnotationUtil.getAnnotation(
detailAST, "Reference");
if (annotationDetailAST == null) {
return;
}
String policyName = _getAnnotationMemberValue(
annotationDetailAST, "policy", _POLICY_STATIC);
if (detailAST.getType() == TokenTypes.VARIABLE_DEF) {
_checkVolatileVariable(detailAST, policyName);
return;
}
DetailAST classDefinitionDetailAST = getParentWithTokenType(
detailAST, TokenTypes.CLASS_DEF);
if (classDefinitionDetailAST == null) {
return;
}
String unbindName = _getAnnotationMemberValue(
annotationDetailAST, "unbind", null);
DetailAST identDetailAST = detailAST.findFirstToken(TokenTypes.IDENT);
String methodName = identDetailAST.getText();
String defaultUnbindMethodName = _getDefaultUnbindMethodName(
methodName);
_checkUnbind(
classDefinitionDetailAST, defaultUnbindMethodName, unbindName,
policyName, annotationDetailAST.getLineNo());
if (policyName.endsWith(_POLICY_DYNAMIC) && (unbindName == null)) {
_checkDynamicMethod(
classDefinitionDetailAST, detailAST, methodName,
defaultUnbindMethodName);
}
}
private void _checkUnbind(
DetailAST classDefinitionDetailAST, String defaultUnbindMethodName,
String unbindName, String policyName, int lineNo) {
if (unbindName == null) {
if (policyName.endsWith(_POLICY_STATIC) &&
!_containsMethod(
classDefinitionDetailAST, defaultUnbindMethodName)) {
log(lineNo, _MSG_MISSING_STATIC_POLICY_UNBIND, _NO_UNBIND);
}
}
else if (unbindName.equals("\"" + defaultUnbindMethodName + "\"")) {
log(lineNo, _MSG_REDUNDANT_DEFAULT_UNBIND);
}
else if (unbindName.equals(_NO_UNBIND) &&
policyName.endsWith(_POLICY_DYNAMIC)) {
log(lineNo, _MSG_MISSING_DYNAMIC_POLICY_UNBIND);
}
}
private void _checkVolatileVariable(
DetailAST variableDefinitionDetailAST, String policyName) {
if (!policyName.endsWith(_POLICY_DYNAMIC)) {
return;
}
DetailAST modifiersDetailAST =
variableDefinitionDetailAST.findFirstToken(TokenTypes.MODIFIERS);
if (!modifiersDetailAST.branchContains(TokenTypes.LITERAL_VOLATILE)) {
DetailAST identDetailAST =
variableDefinitionDetailAST.findFirstToken(TokenTypes.IDENT);
log(
identDetailAST, _MSG_MISSING_VOLATILE,
identDetailAST.getText());
}
}
private boolean _containsMethod(
DetailAST classDefinitionDetailAST, String methodName) {
List methodDefinitionDetailASTList = getAllChildTokens(
classDefinitionDetailAST, true, TokenTypes.METHOD_DEF);
for (DetailAST methodDefinitionDetailAST :
methodDefinitionDetailASTList) {
DetailAST identDetailAST = methodDefinitionDetailAST.findFirstToken(
TokenTypes.IDENT);
if (methodName.equals(identDetailAST.getText())) {
return true;
}
}
return false;
}
private String _getAnnotationMemberValue(
DetailAST anontationDetailAST, String name, String defaultValue) {
List annotationMemberValuePairDetailASTList =
getAllChildTokens(
anontationDetailAST, false,
TokenTypes.ANNOTATION_MEMBER_VALUE_PAIR);
for (DetailAST annotationMemberValuePairDetailAST :
annotationMemberValuePairDetailASTList) {
DetailAST identDetailAST =
annotationMemberValuePairDetailAST.findFirstToken(
TokenTypes.IDENT);
String annotationMemberName = identDetailAST.getText();
if (!annotationMemberName.equals(name)) {
continue;
}
DetailAST expressionDetailAST =
annotationMemberValuePairDetailAST.findFirstToken(
TokenTypes.EXPR);
if (expressionDetailAST == null) {
return null;
}
FullIdent expressionIdent = FullIdent.createFullIdentBelow(
expressionDetailAST);
return expressionIdent.getText();
}
return defaultValue;
}
private String _getDefaultUnbindMethodName(String methodName) {
if (methodName.startsWith("add")) {
return StringUtil.replaceFirst(methodName, "add", "remove");
}
return "un" + methodName;
}
private String _getMethodBody(DetailAST methodDefinitionDetailAST) {
DetailAST slistDetailAST = methodDefinitionDetailAST.findFirstToken(
TokenTypes.SLIST);
int startLineNumber = getStartLineNumber(slistDetailAST);
int endLineNumber = getEndLineNumber(slistDetailAST);
StringBundler sb = new StringBundler(
(endLineNumber - startLineNumber - 1) * 2);
for (int i = startLineNumber + 1; i < endLineNumber; i++) {
sb.append(getLine(i - 1));
sb.append("\n");
}
return sb.toString();
}
private static final String _MSG_MISSING_DYNAMIC_POLICY_UNBIND =
"unbind.dynamic.policy.missing";
private static final String _MSG_MISSING_STATIC_POLICY_UNBIND =
"unbind.static.policy.missing";
private static final String _MSG_MISSING_VOLATILE = "volatile.missing";
private static final String _MSG_MOVE_REFERENCE = "reference.move";
private static final String _MSG_REDUNDANT_DEFAULT_UNBIND =
"default.unbind.redundant";
private static final String _NO_UNBIND = "\"-\"";
private static final String _POLICY_DYNAMIC = "DYNAMIC";
private static final String _POLICY_STATIC = "STATIC";
private static final Pattern _referenceMethodContentPattern =
Pattern.compile("^(\\w+) =\\s+\\w+;$");
}
