Eclipse AST 不更改未在 Eclipse 中打开的文件 [英] Eclipse AST not changing files which are not opened in eclipse

问题描述

我正在尝试使用 eclipse 插件、JDT 和 AST(抽象语法树)修改源代码.我可以读取所有 Java 文件并对所有这些文件进行操作，但是当我使用

I am trying to modify source code using eclipse plugin, JDT and AST (Abstract Syntax Tree). I can read all Java files and make operation on all those file, But when i am saving those changes (Edits) in to files using

    TextEdit edits = rewriter.rewriteAST();
    // apply the text edits to the compilation unit
    edits.apply(document);
    iCompilationUnit.getBuffer().setContents(document.get());

它只对在 eclipse 中以未保存模式打开的文件进行更改.其余文件不受影响.

It only make changes in file those are open in eclipse in unsaved mode. Rest of files are not affected.

在下面找到我的代码片段:

Find my code snippet below:

CompilationUnit cu = parse(iCompilationUnit);
    MethodVisitor visitor = new MethodVisitor();
    cu.accept(visitor);
    String source = iCompilationUnit.getSource();
    Document document= new Document(source);
    ASTRewrite rewriter = ASTRewrite.create(cu.getAST());
    cu.recordModifications();
    for (MethodDeclaration methodDeclaration : visitor.getMethods()) {
        System.out.print("Method name: " + methodDeclaration.getName()
                + " Return type: " + methodDeclaration.getReturnType2());
        MethodDeclaration methodDecl = methodDeclaration;
        Block block = methodDecl.getBody();
        ListRewrite listRewrite = rewriter.getListRewrite(block, Block.STATEMENTS_PROPERTY);
        Statement placeHolder = (Statement) rewriter.createStringPlaceholder("System.out.println("Test Print");", ASTNode.EMPTY_STATEMENT);
        listRewrite.insertFirst(placeHolder, null);
    }
    TextEdit edits = rewriter.rewriteAST();
    // apply the text edits to the compilation unit
    edits.apply(document);
    iCompilationUnit.getBuffer().setContents(document.get());

推荐答案

尝试:

1. 将 TextEdit 直接应用于 ICompilationUnit，而不是使用 Document.
2. 使用 ICompilationUnit.commitWorkingCopy 保存更改

我使用类似的代码:

iCompilationUnit.becomeWorkingCopy(new NullProgressMonitor());
CompilationUnit cu = parse(iCompilationUnit);
ASTRewrite rewriter = ASTRewrite.create(cu.getAST());

... process AST ...

iCompilationUnit.applyTextEdit(rewrite.rewriteAST(), new NullProgressMonitor());
iCompilationUnit.commitWorkingCopy(false, new NullProgressMonitor());   

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