java - 如何用JDT获取静态字段的所有引用

Question

我找到了 Java: Find all callers of a method – get all methods that call a particular method这给出了如何找到特定方法的所有调用者的提示。

那么，如何获取静态字段的用户呢？

例如，当我在AnotherClass 中有静态z，并且它是通过ClassA 访问时，如何获取IMethod ClassA#moved?

public class AnotherClass {
    public static int z = 20;
    ....
}


public class ClassA {
    public int moved(int x, int y)
    {
        int temp = AnotherClass.z;
    }

Answer 1

该示例基于 org.eclipse.jdt.internal.* 类，我认为您不需要为此付出太多努力，因为 JDT SearchEngine API 是全功能的。对于您的情况，以下代码就足够了:

    IWorkspace workspace = ResourcesPlugin.getWorkspace();
    IWorkspaceRoot root = workspace.getRoot();
    IProject plainProject = root.getProject("some project");
    IJavaProject javaProject = JavaCore.create(plainProject);
    try {
        IType type = javaProject.findType("foo.bar.AnotherClass");
        IField field = type.getField("z");
        //IJavaSearchScope scope = SearchEngine.createWorkspaceScope();
        IJavaSearchScope scope = SearchEngine.createJavaSearchScope(new IJavaElement[] { plainProject });
        SearchPattern searchParttern = SearchPattern.createPattern(field,
                IJavaSearchConstants.REFERENCES);
        SearchRequestor requestor = new SearchRequestor() {
            @Override
            public void acceptSearchMatch(SearchMatch match) {
                System.out.println(match.getElement());
            }
        };
        SearchEngine searchEngine = new SearchEngine();
        searchEngine.search(searchParttern,
                new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() }, scope,
                requestor, new NullProgressMonitor());
    } catch (Exception e) {
        // some exception handling you need to do
    }