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112 changes: 112 additions & 0 deletions
112
...fix/src/org/sandbox/jdt/internal/corext/fix/helper/ChannelsNewReaderExplicitEncoding.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2021 Carsten Hammer. | ||
| * | ||
| * 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: | ||
| * Carsten Hammer | ||
| *******************************************************************************/ | ||
| package org.sandbox.jdt.internal.corext.fix.helper; | ||
|
|
||
| import static org.sandbox.jdt.internal.common.LibStandardNames.METHOD_NEW_READER; | ||
|
|
||
| import java.nio.channels.Channels; | ||
| import java.nio.charset.Charset; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
||
| import org.eclipse.jdt.core.dom.AST; | ||
| import org.eclipse.jdt.core.dom.ASTNode; | ||
| import org.eclipse.jdt.core.dom.CompilationUnit; | ||
| import org.eclipse.jdt.core.dom.MethodInvocation; | ||
| import org.eclipse.jdt.core.dom.StringLiteral; | ||
| import org.eclipse.jdt.core.dom.rewrite.ASTRewrite; | ||
| import org.eclipse.jdt.core.dom.rewrite.ListRewrite; | ||
| import org.eclipse.jdt.internal.corext.fix.CompilationUnitRewriteOperationsFixCore.CompilationUnitRewriteOperation; | ||
| import org.eclipse.jdt.internal.corext.refactoring.structure.CompilationUnitRewrite; | ||
| import org.eclipse.jdt.internal.corext.util.JavaModelUtil; | ||
| import org.eclipse.text.edits.TextEditGroup; | ||
| import org.sandbox.jdt.internal.common.HelperVisitor; | ||
| import org.sandbox.jdt.internal.common.ReferenceHolder; | ||
| import org.sandbox.jdt.internal.corext.fix.UseExplicitEncodingFixCore; | ||
| /** | ||
| * Find: Channels.newReader(ch,"UTF-8") | ||
| * | ||
| * Rewrite: Channels.newReader(ch,StandardCharsets.UTF_8) | ||
| * | ||
| */ | ||
| public class ChannelsNewReaderExplicitEncoding extends AbstractExplicitEncoding<MethodInvocation> { | ||
|
|
||
| @Override | ||
| public void find(UseExplicitEncodingFixCore fixcore, CompilationUnit compilationUnit, Set<CompilationUnitRewriteOperation> operations, Set<ASTNode> nodesprocessed,ChangeBehavior cb) { | ||
| HelperVisitor.callMethodInvocationVisitor(Channels.class, METHOD_NEW_READER, compilationUnit, datah, nodesprocessed, (visited, holder) -> processFoundNode(fixcore, operations, nodesprocessed, cb, visited, holder)); | ||
| } | ||
|
|
||
| private boolean processFoundNode(UseExplicitEncodingFixCore fixcore, | ||
| Set<CompilationUnitRewriteOperation> operations, Set<ASTNode> nodesprocessed, ChangeBehavior cb, | ||
| MethodInvocation visited, ReferenceHolder<String, Object> holder) { | ||
| List<ASTNode> arguments= visited.arguments(); | ||
| if(nodesprocessed.contains(visited) || (arguments.size()>1)) { | ||
| return false; | ||
| } | ||
| switch (arguments.size()) { | ||
| case 1: | ||
| if(!(arguments.get(0) instanceof StringLiteral)) { | ||
| return false; | ||
| } | ||
| StringLiteral argstring3= (StringLiteral) arguments.get(0); | ||
| if (!"UTF-8".equals(argstring3.getLiteralValue())) { //$NON-NLS-1$ | ||
| return false; | ||
| } | ||
| holder.put(ENCODING,StandardCharsets.UTF_8); | ||
| holder.put(REPLACE,argstring3); | ||
| break; | ||
| case 0: | ||
| break; | ||
| default: | ||
| return false; | ||
| } | ||
| operations.add(fixcore.rewrite(visited, cb, datah)); | ||
| nodesprocessed.add(visited); | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| public void rewrite(UseExplicitEncodingFixCore upp,final MethodInvocation visited, final CompilationUnitRewrite cuRewrite, | ||
| TextEditGroup group,ChangeBehavior cb, ReferenceHolder<String, Object> data) { | ||
| ASTRewrite rewrite= cuRewrite.getASTRewrite(); | ||
| AST ast= cuRewrite.getRoot().getAST(); | ||
| if (!JavaModelUtil.is50OrHigher(cuRewrite.getCu().getJavaProject())) { | ||
| /** | ||
| * For Java 1.4 and older just do nothing | ||
| */ | ||
| return; | ||
| } | ||
| ASTNode callToCharsetDefaultCharset= computeCharsetASTNode(cuRewrite, cb, ast, (Charset) data.get(ENCODING)); | ||
| // ListRewrite listRewrite= rewrite.getListRewrite(visited, MethodInvocation.ARGUMENTS_PROPERTY); | ||
| // listRewrite.insertLast(callToCharsetDefaultCharset, group); | ||
|
|
||
| ListRewrite listRewrite= rewrite.getListRewrite(visited, MethodInvocation.ARGUMENTS_PROPERTY); | ||
| if(data.get(ENCODING)!= null) { | ||
| listRewrite.replace((ASTNode) data.get(REPLACE), callToCharsetDefaultCharset, group); | ||
| } else { | ||
| listRewrite.insertLast(callToCharsetDefaultCharset, group); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public String getPreview(boolean afterRefactoring,ChangeBehavior cb) { | ||
| if(afterRefactoring) { | ||
| return "Charset s=\"StandardCharsets.UTF_8\";\n"+ //$NON-NLS-1$ | ||
| "byte[] bytes= s.getBytes("+computeCharsetforPreview(cb)+");\n"; //$NON-NLS-1$ //$NON-NLS-2$ | ||
| } | ||
| return "Charset s=\"Charset.forName(\"UTF-8\")\";\n"+ //$NON-NLS-1$ | ||
| "byte[] bytes= s.getBytes();\n"; //$NON-NLS-1$ | ||
| } | ||
| } |