问题描述
我有一个eclipse插件代码来操作一个项目/工作区中的一个类（smcho.Hello）。
我可以创建一个CompilationUnit并对其进行了一些修改，但是我需要将结果保存在不同的文件中，以检查两个版本之间的差异。
I have a eclipse plugin code to manipulate a class (smcho.Hello) in a project/workspace.I could create a CompilationUnit and did some modifications on it, but I need to save the result in different file to check the differences between the two version.
这是我如何获得CompilationUnit的代码。
This is the code how I get the CompilationUnit.
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
IProject project = root.getProject("Hello");
project.open(null);
IJavaProject javaProject = JavaCore.create(project);
IType lwType = javaProject.findType("smcho.Hello");
org.eclipse.jdt.core.ICompilationUnit lwCompilationUnit = lwType.getCompilationUnit();
final ASTParser parser = ASTParser.newParser(AST.JLS3);
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setSource(lwCompilationUnit);
parser.setResolveBindings(true); // we need bindings later on
CompilationUnit unit = (CompilationUnit) parser.createAST(null /* IProgressMonitor */);
// modify the unit AST node
如何将此修改的单元保存到新的文件？
How can I save this modified unit into a new file?
推荐答案
您可以使用 ASTRewriter / p>
You can use an ASTRewriter to do so.
// get the ast rewriter
final ASTRewrite rewriter = ASTRewrite.create(ast);
// get the current document source
final Document document = new Document(unit.getSource());
// compute the edits you have made to the compilation unit
final TextEdit edits = rewriter.rewriteAST();
// apply the edits to the document
edits.apply(document);
// get the new source
String newSource = document.get();
// now write this source to some other file.
查看下面的链接。这有助于了解如何将AST更改写入文件。
Check the link below. This gives insight on how to write the AST changes to the file.
更新：
这是我如何写文件：
Update:This is how i write to the file:
File file = new File(destFile);
FileUtils.writeStringToFile(File file, String newSource)
这篇关于使用eclipse插件将修改后的AST保存在新文件中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！