public static List getMainClasses()

in jdtls.ext/com.microsoft.jdtls.ext.core/src/com/microsoft/jdtls/ext/core/ProjectCommand.java [208:257]
48 lines of code
12 McCabe index (conditional complexity)

    public static List<MainClassInfo> getMainClasses(List<Object> arguments, IProgressMonitor monitor) throws Exception {
        List<PackageNode> projectList = listProjects(arguments, monitor);
        final List<MainClassInfo> res = new ArrayList<>();
        List<IJavaElement> searchRoots = new ArrayList<>();
        if (projectList.size() == 0) {
            return res;
        }
        for (PackageNode project : projectList) {
            IJavaProject javaProject = PackageCommand.getJavaProject(project.getUri());
            for (IPackageFragmentRoot packageFragmentRoot : javaProject.getAllPackageFragmentRoots()) {
                if (!packageFragmentRoot.isArchive()) {
                    searchRoots.add(packageFragmentRoot);
                }
            }
        }
        IJavaSearchScope scope = SearchEngine.createJavaSearchScope(searchRoots.toArray(new IJavaElement[0]));
        SearchPattern pattern = SearchPattern.createPattern("main(String[]) void", IJavaSearchConstants.METHOD,
                IJavaSearchConstants.DECLARATIONS, SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE);
        SearchRequestor requestor = new SearchRequestor() {
            @Override
            public void acceptSearchMatch(SearchMatch match) {
                Object element = match.getElement();
                if (!(element instanceof IMethod)) {
                    return;
                }
                IMethod method = (IMethod) element;
                try {
                    if (!method.isMainMethod() || method.getResource() == null || method.getJavaProject() == null) {
                        return;
                    }
                    String mainClass = method.getDeclaringType().getFullyQualifiedName();
                    String filePath = "";
                    if (match.getResource() instanceof IFile) {
                        filePath = match.getResource().getLocation().toOSString();
                    }
                    res.add(new MainClassInfo(mainClass, filePath));
                } catch (JavaModelException e) {
                    // ignore
                }
            }
        };
        SearchEngine searchEngine = new SearchEngine();
        try {
            searchEngine.search(pattern, new SearchParticipant[] {SearchEngine.getDefaultSearchParticipant()}, scope,
                    requestor, new NullProgressMonitor());
        } catch (CoreException e) {
            // ignore
        }
        return res;
    }