| /* |
| * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser. |
| * Copyright (C) 2011, 2013-2016 The JavaParser Team. |
| * |
| * This file is part of JavaParser. |
| * |
| * JavaParser can be used either under the terms of |
| * a) the GNU Lesser General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * b) the terms of the Apache License |
| * |
| * You should have received a copy of both licenses in LICENCE.LGPL and |
| * LICENCE.APACHE. Please refer to those files for details. |
| * |
| * JavaParser 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.github.javaparser.ast.stmt; |
| |
| import com.github.javaparser.TokenRange; |
| import com.github.javaparser.ast.AllFieldsConstructor; |
| import com.github.javaparser.ast.Node; |
| import com.github.javaparser.ast.NodeList; |
| import com.github.javaparser.ast.expr.Expression; |
| import com.github.javaparser.ast.observer.ObservableProperty; |
| import com.github.javaparser.ast.visitor.CloneVisitor; |
| import com.github.javaparser.ast.visitor.GenericVisitor; |
| import com.github.javaparser.ast.visitor.VoidVisitor; |
| import com.github.javaparser.metamodel.JavaParserMetaModel; |
| import com.github.javaparser.metamodel.OptionalProperty; |
| import com.github.javaparser.metamodel.TryStmtMetaModel; |
| import javax.annotation.Generated; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Optional; |
| import static com.github.javaparser.utils.Utils.assertNotNull; |
| import java.util.function.Consumer; |
| |
| /** |
| * <h1>The try statement</h1> |
| * <h2>Java 1.0-6</h2> |
| * <pre> |
| * try { |
| * // ... |
| * } catch (IOException e) { |
| * // ... |
| * } finally { |
| * // ... |
| * } |
| * </pre> |
| * In this code, "// do things" is the content of the tryBlock, there is one catch clause that catches IOException e, |
| * and there is a finally block. |
| * <p> |
| * The catch and finally blocks are optional, but they should not be empty at the same time. |
| * <h2>Java 7-8</h2> |
| * <pre> |
| * try (InputStream i = new FileInputStream("file")) { |
| * // ... |
| * } catch (IOException|NullPointerException e) { |
| * // ... |
| * } finally { |
| * // ... |
| * } |
| * </pre> |
| * Java 7 introduced two things: |
| * <ul> |
| * <li>Resources can be specified after "try", but only variable declarations (VariableDeclarationExpr.)</li> |
| * <li>A single catch can catch multiple exception types. This uses the IntersectionType.</li> |
| * </ul> |
| * <h2>Java 9+</h2> |
| * <pre> |
| * try (r) { |
| * // ... |
| * } catch (IOException|NullPointerException e) { |
| * // ... |
| * } finally { |
| * // ... |
| * } |
| * </pre> |
| * Java 9 finishes resources: you can now refer to a resource that was declared somewhere else. |
| * The following types are allowed: |
| * <ul> |
| * <li>VariableDeclarationExpr: "X x = new X()" like in Java 7-8.</li> |
| * <li>NameExpr: "a".</li> |
| * <li>FieldAccessExpr: "x.y.z", "super.test" etc.</li> |
| * </ul> |
| * |
| * @author Julio Vilmar Gesser |
| * @see CatchClause |
| * @see com.github.javaparser.ast.type.IntersectionType |
| * @see com.github.javaparser.ast.expr.FieldAccessExpr |
| * @see com.github.javaparser.ast.expr.NameExpr |
| */ |
| public final class TryStmt extends Statement { |
| |
| private NodeList<Expression> resources; |
| |
| private BlockStmt tryBlock; |
| |
| private NodeList<CatchClause> catchClauses; |
| |
| @OptionalProperty |
| private BlockStmt finallyBlock; |
| |
| public TryStmt() { |
| this(null, new NodeList<>(), new BlockStmt(), new NodeList<>(), null); |
| } |
| |
| public TryStmt(final BlockStmt tryBlock, final NodeList<CatchClause> catchClauses, final BlockStmt finallyBlock) { |
| this(null, new NodeList<>(), tryBlock, catchClauses, finallyBlock); |
| } |
| |
| @AllFieldsConstructor |
| public TryStmt(NodeList<Expression> resources, final BlockStmt tryBlock, final NodeList<CatchClause> catchClauses, final BlockStmt finallyBlock) { |
| this(null, resources, tryBlock, catchClauses, finallyBlock); |
| } |
| |
| /** |
| * This constructor is used by the parser and is considered private. |
| */ |
| @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator") |
| public TryStmt(TokenRange tokenRange, NodeList<Expression> resources, BlockStmt tryBlock, NodeList<CatchClause> catchClauses, BlockStmt finallyBlock) { |
| super(tokenRange); |
| setResources(resources); |
| setTryBlock(tryBlock); |
| setCatchClauses(catchClauses); |
| setFinallyBlock(finallyBlock); |
| customInitialization(); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) { |
| return v.visit(this, arg); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.AcceptGenerator") |
| public <A> void accept(final VoidVisitor<A> v, final A arg) { |
| v.visit(this, arg); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public NodeList<CatchClause> getCatchClauses() { |
| return catchClauses; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public Optional<BlockStmt> getFinallyBlock() { |
| return Optional.ofNullable(finallyBlock); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public BlockStmt getTryBlock() { |
| return tryBlock; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public NodeList<Expression> getResources() { |
| return resources; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public TryStmt setCatchClauses(final NodeList<CatchClause> catchClauses) { |
| assertNotNull(catchClauses); |
| if (catchClauses == this.catchClauses) { |
| return (TryStmt) this; |
| } |
| notifyPropertyChange(ObservableProperty.CATCH_CLAUSES, this.catchClauses, catchClauses); |
| if (this.catchClauses != null) |
| this.catchClauses.setParentNode(null); |
| this.catchClauses = catchClauses; |
| setAsParentNodeOf(catchClauses); |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public TryStmt setFinallyBlock(final BlockStmt finallyBlock) { |
| if (finallyBlock == this.finallyBlock) { |
| return (TryStmt) this; |
| } |
| notifyPropertyChange(ObservableProperty.FINALLY_BLOCK, this.finallyBlock, finallyBlock); |
| if (this.finallyBlock != null) |
| this.finallyBlock.setParentNode(null); |
| this.finallyBlock = finallyBlock; |
| setAsParentNodeOf(finallyBlock); |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public TryStmt setTryBlock(final BlockStmt tryBlock) { |
| assertNotNull(tryBlock); |
| if (tryBlock == this.tryBlock) { |
| return (TryStmt) this; |
| } |
| notifyPropertyChange(ObservableProperty.TRY_BLOCK, this.tryBlock, tryBlock); |
| if (this.tryBlock != null) |
| this.tryBlock.setParentNode(null); |
| this.tryBlock = tryBlock; |
| setAsParentNodeOf(tryBlock); |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.PropertyGenerator") |
| public TryStmt setResources(final NodeList<Expression> resources) { |
| assertNotNull(resources); |
| if (resources == this.resources) { |
| return (TryStmt) this; |
| } |
| notifyPropertyChange(ObservableProperty.RESOURCES, this.resources, resources); |
| if (this.resources != null) |
| this.resources.setParentNode(null); |
| this.resources = resources; |
| setAsParentNodeOf(resources); |
| return this; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| public boolean remove(Node node) { |
| if (node == null) |
| return false; |
| for (int i = 0; i < catchClauses.size(); i++) { |
| if (catchClauses.get(i) == node) { |
| catchClauses.remove(i); |
| return true; |
| } |
| } |
| if (finallyBlock != null) { |
| if (node == finallyBlock) { |
| removeFinallyBlock(); |
| return true; |
| } |
| } |
| for (int i = 0; i < resources.size(); i++) { |
| if (resources.get(i) == node) { |
| resources.remove(i); |
| return true; |
| } |
| } |
| return super.remove(node); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| public TryStmt removeFinallyBlock() { |
| return setFinallyBlock((BlockStmt) null); |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.RemoveMethodGenerator") |
| public TryStmt removeTryBlock() { |
| return setTryBlock((BlockStmt) null); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.CloneGenerator") |
| public TryStmt clone() { |
| return (TryStmt) accept(new CloneVisitor(), null); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator") |
| public TryStmtMetaModel getMetaModel() { |
| return JavaParserMetaModel.tryStmtMetaModel; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator") |
| public boolean replace(Node node, Node replacementNode) { |
| if (node == null) |
| return false; |
| for (int i = 0; i < catchClauses.size(); i++) { |
| if (catchClauses.get(i) == node) { |
| catchClauses.set(i, (CatchClause) replacementNode); |
| return true; |
| } |
| } |
| if (finallyBlock != null) { |
| if (node == finallyBlock) { |
| setFinallyBlock((BlockStmt) replacementNode); |
| return true; |
| } |
| } |
| for (int i = 0; i < resources.size(); i++) { |
| if (resources.get(i) == node) { |
| resources.set(i, (Expression) replacementNode); |
| return true; |
| } |
| } |
| if (node == tryBlock) { |
| setTryBlock((BlockStmt) replacementNode); |
| return true; |
| } |
| return super.replace(node, replacementNode); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public boolean isTryStmt() { |
| return true; |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public TryStmt asTryStmt() { |
| return this; |
| } |
| |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public void ifTryStmt(Consumer<TryStmt> action) { |
| action.accept(this); |
| } |
| |
| @Override |
| @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator") |
| public Optional<TryStmt> toTryStmt() { |
| return Optional.of(this); |
| } |
| } |