从Eclipse插件向方法添加注释 [英] Add annotation to a method from an Eclipse plugin

问题描述

我正在尝试从Eclipse插件向方法添加注释。我可以访问表示特定方法的 IJavaElement 。

I am trying to add an annotation to a method from an Eclipse plugin. I have access to the IJavaElement that represents the particular method.

使用Eclipse JDT的最佳方法是什么？

What would be the best approach using Eclipse JDT for this?

推荐答案

是的，JDT可能是解决此问题的好方法。

Yes JDT can be a good approach for this problem.

以下代码将使您了解如何实现相同的目的。

（注意：未经测试或编译的代码）

The following code will give you an idea of how to accomplish the same.
(note: code not tested nor compiled)

if (javaElement instanceof IMethod) {

    // Get the compilation unit for traversing AST
    final ASTParser parser = ASTParser.newParser(AST.JLS4);
    parser.setSource(javaElement.getCompilationUnit());
    parser.setResolveBindings(true);

    final CompilationUnit compilationUnit = (CompilationUnit) parser.createAST(null);

    // Record modification - to be later written with ASTRewrite
    compilationUnit.recordModifications();

    // Get AST node for IMethod
    int methodIndex = javaElement.getCompilationUnit().getSource().indexOf(javaElement.getSource());

    ASTNode methodASTNode = NodeFinder.perform(compilationUnit.getRoot(), methodIndex, javaElement.getSource().length());

    // Create the annotation
    final NormalAnnotation newNormalAnnotation = methodASTNode.getAST().newNormalAnnotation();
    newNormalAnnotation.setTypeName(methodASTNode.getAST().newName("AnnotationTest"));

   // Add logic for writing the AST here.

}

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