mbien commented on code in PR #5648: URL: https://github.com/apache/netbeans/pull/5648#discussion_r1132761420
########## php/php.editor/src/org/netbeans/modules/php/editor/verification/ReturnStatementWithoutValueHintError.java: ########## @@ -0,0 +1,218 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.netbeans.modules.php.editor.verification; + +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; +import org.netbeans.api.annotations.common.NullAllowed; +import org.netbeans.modules.csl.api.Hint; +import org.netbeans.modules.csl.api.HintFix; +import org.netbeans.modules.csl.api.OffsetRange; +import org.netbeans.modules.csl.spi.support.CancelSupport; +import org.netbeans.modules.php.api.PhpVersion; +import org.netbeans.modules.php.editor.CodeUtils; +import org.netbeans.modules.php.editor.model.FileScope; +import org.netbeans.modules.php.editor.model.impl.Type; +import org.netbeans.modules.php.editor.parser.PHPParseResult; +import org.netbeans.modules.php.editor.parser.astnodes.ASTNode; +import org.netbeans.modules.php.editor.parser.astnodes.Expression; +import org.netbeans.modules.php.editor.parser.astnodes.FunctionDeclaration; +import org.netbeans.modules.php.editor.parser.astnodes.IntersectionType; +import org.netbeans.modules.php.editor.parser.astnodes.LambdaFunctionDeclaration; +import org.netbeans.modules.php.editor.parser.astnodes.NamespaceName; +import org.netbeans.modules.php.editor.parser.astnodes.NullableType; +import org.netbeans.modules.php.editor.parser.astnodes.ReturnStatement; +import org.netbeans.modules.php.editor.parser.astnodes.UnionType; +import org.netbeans.modules.php.editor.parser.astnodes.visitors.DefaultVisitor; +import org.openide.filesystems.FileObject; +import org.openide.util.NbBundle; + +/** + * Checks if the return statement has a value if a return type is specified for the function + * + */ +public class ReturnStatementWithoutValueHintError extends HintErrorRule { + + private FileObject fileObject; + + @NbBundle.Messages("ReturnStatementWithoutValueHintErrorName=Return statement without value") + @Override + public String getDisplayName() { + return Bundle.ReturnStatementWithoutValueHintErrorName(); + } + + @Override + public void invoke(PHPRuleContext context, List<Hint> hints) { + PHPParseResult phpParseResult = (PHPParseResult) context.parserResult; + if (phpParseResult.getProgram() == null) { + return; + } + FileScope fileScope = context.fileScope; + fileObject = phpParseResult.getSnapshot().getSource().getFileObject(); + if (fileScope != null && fileObject != null && appliesTo(fileObject)) { + if (CancelSupport.getDefault().isCancelled()) { + return; + } + CheckVisitor checkVisitor = new CheckVisitor(); + phpParseResult.getProgram().accept(checkVisitor); + Map<ASTNode, Set<ReturnStatement>> returnStatements = checkVisitor.getReturnStatements(); + checkReturnType(returnStatements, hints); + } + } + + protected PhpVersion getPhpVersion(@NullAllowed FileObject file) { + if (file == null) { + return PhpVersion.getDefault(); + } + return CodeUtils.getPhpVersion(file); + } + + private boolean appliesTo(FileObject file) { + return getPhpVersion(file).compareTo(PhpVersion.PHP_70) >= 0; + } + + private void checkReturnType(Map<ASTNode, Set<ReturnStatement>> returnStatements, List<Hint> hints) { + for (Entry<ASTNode, Set<ReturnStatement>> entry : returnStatements.entrySet()) { + if (CancelSupport.getDefault().isCancelled()) { + return; + } + ASTNode node = entry.getKey(); + Expression returnType = null; + if (node instanceof FunctionDeclaration) { + returnType = ((FunctionDeclaration) node).getReturnType(); + } else if (node instanceof LambdaFunctionDeclaration) { + returnType = ((LambdaFunctionDeclaration) node).getReturnType(); + } + + if (returnType == null) { + continue; + } + Set<ReturnStatement> statements = entry.getValue(); + + if (returnType instanceof NamespaceName) { + NamespaceName namespaceName = (NamespaceName) returnType; + String name = CodeUtils.extractUnqualifiedName(namespaceName); + checkReturnStatementsWithoutValue(statements, name, hints); + } else if (returnType instanceof NullableType + || returnType instanceof UnionType + || returnType instanceof IntersectionType) { + checkReturnStatementsWithoutValue(statements, "", hints); + } + + } + } + + @NbBundle.Messages({ + "ReturnStatementWithoutValueHintErrorDesc=Return statement must be filled with the value" + }) + private void checkReturnStatementsWithoutValue(Set<ReturnStatement> statements, String name, List<Hint> hints) { + if (!Type.VOID.equals(name) && !isNeverType(name)) { + // check empty return statement + statements.forEach((statement) -> { + if (CancelSupport.getDefault().isCancelled()) { + return; Review Comment: on second thought, this is so minor that you can simply add this to your first commit. feel free to force push if you find other occurrences :) -- This is an automated message from the Apache Git Service. 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