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Add quick assist for splitting try-with-resources
- add new SplitTryResourceFixCore.java - add new logic to QuickAssistProcessor - add new tests to AssistQuickFixTest1d8 - fixes #1220
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113 changes: 113 additions & 0 deletions
113
...ipulation/core extension/org/eclipse/jdt/internal/corext/fix/SplitTryResourceFixCore.java
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|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2024 Red Hat Inc. and others. | ||
| * | ||
| * This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License 2.0 | ||
| * which accompanies this distribution, and is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * Red Hat Inc. - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.jdt.internal.corext.fix; | ||
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| import java.util.List; | ||
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| import org.eclipse.core.runtime.CoreException; | ||
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| import org.eclipse.text.edits.TextEditGroup; | ||
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| import org.eclipse.jdt.core.ICompilationUnit; | ||
| import org.eclipse.jdt.core.dom.AST; | ||
| import org.eclipse.jdt.core.dom.ASTNode; | ||
| import org.eclipse.jdt.core.dom.Block; | ||
| import org.eclipse.jdt.core.dom.CompilationUnit; | ||
| import org.eclipse.jdt.core.dom.Statement; | ||
| import org.eclipse.jdt.core.dom.TryStatement; | ||
| import org.eclipse.jdt.core.dom.VariableDeclarationExpression; | ||
| import org.eclipse.jdt.core.dom.rewrite.ASTRewrite; | ||
| import org.eclipse.jdt.core.dom.rewrite.ListRewrite; | ||
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| import org.eclipse.jdt.internal.corext.dom.ASTNodes; | ||
| import org.eclipse.jdt.internal.corext.refactoring.structure.CompilationUnitRewrite; | ||
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; | ||
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| import org.eclipse.jdt.internal.ui.text.correction.CorrectionMessages; | ||
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| public final class SplitTryResourceFixCore extends CompilationUnitRewriteOperationsFixCore { | ||
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| public SplitTryResourceFixCore(String name, CompilationUnit compilationUnit, CompilationUnitRewriteOperation[] operations) { | ||
| super(name, compilationUnit, operations); | ||
| } | ||
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| public static boolean initialConditionsCheck(ICompilationUnit compilationUnit, ASTNode node) { | ||
| if (!JavaModelUtil.is1d8OrHigher(compilationUnit.getJavaProject())) | ||
| return false; | ||
| ASTNode foundNode= ASTNodes.getFirstAncestorOrNull(node, VariableDeclarationExpression.class, Statement.class); | ||
| if (!(foundNode instanceof VariableDeclarationExpression varDeclExp) || varDeclExp.getLocationInParent() != TryStatement.RESOURCES2_PROPERTY) { | ||
| return false; | ||
| } | ||
| ASTNode parent= foundNode.getParent(); | ||
| if (!(parent instanceof TryStatement tryStatement) || tryStatement.resources().size() < 2) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
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| public static SplitTryResourceFixCore createSplitVariableFix(CompilationUnit compilationUnit, ASTNode node) { | ||
| ASTNode foundNode= ASTNodes.getFirstAncestorOrNull(node, VariableDeclarationExpression.class, Statement.class); | ||
| if (!(foundNode instanceof VariableDeclarationExpression varDeclExp) || varDeclExp.getLocationInParent() != TryStatement.RESOURCES2_PROPERTY) { | ||
| return null; | ||
| } | ||
| ASTNode parent= foundNode.getParent(); | ||
| if (!(parent instanceof TryStatement tryStatement) || tryStatement.resources().size() < 2) { | ||
| return null; | ||
| } | ||
| return new SplitTryResourceFixCore(CorrectionMessages.QuickAssistProcessor_splittryresource_description, compilationUnit, | ||
| new CompilationUnitRewriteOperation[] { new SplitTryResourceProposalOperation(tryStatement, varDeclExp) }); | ||
| } | ||
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| private static class SplitTryResourceProposalOperation extends CompilationUnitRewriteOperation { | ||
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| private final TryStatement tryStatement; | ||
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| private final VariableDeclarationExpression expression; | ||
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| public SplitTryResourceProposalOperation(TryStatement statement, VariableDeclarationExpression expression) { | ||
| this.tryStatement= statement; | ||
| this.expression= expression; | ||
| } | ||
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| @Override | ||
| public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModelCore linkedModel) throws CoreException { | ||
| TextEditGroup group= new TextEditGroup("abc"); //$NON-NLS-1$ | ||
| final ASTRewrite rewrite= cuRewrite.getASTRewrite(); | ||
| final AST ast= cuRewrite.getAST(); | ||
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| List<VariableDeclarationExpression> resources= tryStatement.resources(); | ||
| int expIndex; | ||
| for (expIndex= 0; expIndex < resources.size(); ++expIndex) { | ||
| if (resources.get(expIndex) == expression) { | ||
| break; | ||
| } | ||
| } | ||
| TryStatement newTryStatement= ast.newTryStatement(); | ||
| Block newBlock= ast.newBlock(); | ||
| newTryStatement.setBody(newBlock); | ||
| ListRewrite listRewrite= rewrite.getListRewrite(newTryStatement, TryStatement.RESOURCES2_PROPERTY); | ||
| ListRewrite oldResourcesListRewrite= rewrite.getListRewrite(tryStatement, TryStatement.RESOURCES2_PROPERTY); | ||
| listRewrite.insertFirst(oldResourcesListRewrite.createMoveTarget(expression, (ASTNode)oldResourcesListRewrite.getOriginalList().get(resources.size() - 1)), group); | ||
| Block originalBlock= tryStatement.getBody(); | ||
| List<Statement> originalStatements= originalBlock.statements(); | ||
| int size= originalStatements.size(); | ||
| ListRewrite originalBlockListRewrite= rewrite.getListRewrite(originalBlock, Block.STATEMENTS_PROPERTY); | ||
| originalBlockListRewrite.insertFirst(newTryStatement, group); | ||
| ListRewrite newBlockListRewrite= rewrite.getListRewrite(newBlock, Block.STATEMENTS_PROPERTY); | ||
| newBlockListRewrite.insertLast(originalBlockListRewrite.createMoveTarget(originalStatements.get(0), originalStatements.get(size - 1)), group); | ||
| } | ||
| } | ||
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| } |
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