JDT -如何从CompilationUnit获取ICompilationUnit

Question

这是我的代码。我要在那里做一个CompilationUnit

ASTParser parser = ASTParser.newParser(AST.JLS8);
parser.setResolveBindings(true);
parser.setStatementsRecovery(true);
parser.setBindingsRecovery(true);
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setEnvironment(getProjectJars(), getSrcPaths(), null, true);

parser.setSource(IOUtils.toCharArray(new FileInputStream(MY_SRC_FILE)));
parser.setUnitName(MY_SRC_FILE.getAbsolutePath());

CompilationUnit cu = (CompilationUnit) parser.createAST(null);

如何从源码制作的CompilationUnit中获取ICompilationUnit？谢谢

Answer 1

我找到了解决方案：

IWorkspace workspace = ResourcesPlugin.getWorkspace();
IPath path = Path.fromOSString(source.getAbsolutePath());
IFile file = workspace.getRoot().getFileForLocation(path);
ICompilationUnit compilationUnit = (ICompilationUnit) JavaCore.create(file);

Answer 2

我试过了，它起作用了：

ICompilationUnit cu= (ICompilationUnit)compilationUnit.getJavaElement();

Answer 3

第一个选项如下：

ICompilationUnit compilationUnit = JavaCore.createCompilationUnitFrom(javaFile);  
types = compilationUnit.getAllTypes();

第二个选项如下：

IProject project = javaFile.getProject(); 
IJavaProject jProject = JavaCore.create(project); 
if (jProject == null || !jProject.exists()) 
{   
   return null; 
} 
IPackageFragment packageFragment = null; 
try {   
   packageFragment = jProject.findPackageFragment(
                         javaFile.getFullPath().removeLastSegments(1));     
   String unitName = javaFile.getName();    
   ICompilationUnit cu = packageFragment.getCompilationUnit(unitName);  
   return cu; 
} catch (JavaModelException e) {    
return null; 
}