Examples with Exports java.lang.module.ModuleDescriptor.Exports used on opensource projects

Example 1 with Exports

use of java.lang.module.ModuleDescriptor.Exports in project Bytecoder by mirkosertic.

the class Module method initExportsAndOpens.

/**
 * Initialize/setup a module's exports.
 *
 * @param m the module
 * @param nameToSource map of module name to Module for modules that m reads
 * @param nameToModule map of module name to Module for modules in the layer
 *                     under construction
 * @param parents the parent layers
 */
private static void initExportsAndOpens(Module m, Map<String, Module> nameToSource, Map<String, Module> nameToModule, List<ModuleLayer> parents) {
    ModuleDescriptor descriptor = m.getDescriptor();
    Map<String, Set<Module>> openPackages = new HashMap<>();
    Map<String, Set<Module>> exportedPackages = new HashMap<>();
    // process the open packages first
    for (Opens opens : descriptor.opens()) {
        String source = opens.source();
        if (opens.isQualified()) {
            // qualified opens
            Set<Module> targets = new HashSet<>();
            for (String target : opens.targets()) {
                Module m2 = findModule(target, nameToSource, nameToModule, parents);
                if (m2 != null) {
                    addExports0(m, source, m2);
                    targets.add(m2);
                }
            }
            if (!targets.isEmpty()) {
                openPackages.put(source, targets);
            }
        } else {
            // unqualified opens
            addExportsToAll0(m, source);
            openPackages.put(source, EVERYONE_SET);
        }
    }
    // next the exports, skipping exports when the package is open
    for (Exports exports : descriptor.exports()) {
        String source = exports.source();
        // skip export if package is already open to everyone
        Set<Module> openToTargets = openPackages.get(source);
        if (openToTargets != null && openToTargets.contains(EVERYONE_MODULE))
            continue;
        if (exports.isQualified()) {
            // qualified exports
            Set<Module> targets = new HashSet<>();
            for (String target : exports.targets()) {
                Module m2 = findModule(target, nameToSource, nameToModule, parents);
                if (m2 != null) {
                    // skip qualified export if already open to m2
                    if (openToTargets == null || !openToTargets.contains(m2)) {
                        addExports0(m, source, m2);
                        targets.add(m2);
                    }
                }
            }
            if (!targets.isEmpty()) {
                exportedPackages.put(source, targets);
            }
        } else {
            // unqualified exports
            addExportsToAll0(m, source);
            exportedPackages.put(source, EVERYONE_SET);
        }
    }
    if (!openPackages.isEmpty())
        m.openPackages = openPackages;
    if (!exportedPackages.isEmpty())
        m.exportedPackages = exportedPackages;
}

Example 2 with Exports

use of java.lang.module.ModuleDescriptor.Exports in project Bytecoder by mirkosertic.

the class Module method initExports.

/**
 * Initialize/setup a module's exports.
 *
 * @param m the module
 * @param nameToModule map of module name to Module (for qualified exports)
 */
private static void initExports(Module m, Map<String, Module> nameToModule) {
    Map<String, Set<Module>> exportedPackages = new HashMap<>();
    for (Exports exports : m.getDescriptor().exports()) {
        String source = exports.source();
        if (exports.isQualified()) {
            // qualified exports
            Set<Module> targets = new HashSet<>();
            for (String target : exports.targets()) {
                Module m2 = nameToModule.get(target);
                if (m2 != null) {
                    addExports0(m, source, m2);
                    targets.add(m2);
                }
            }
            if (!targets.isEmpty()) {
                exportedPackages.put(source, targets);
            }
        } else {
            // unqualified exports
            addExportsToAll0(m, source);
            exportedPackages.put(source, EVERYONE_SET);
        }
    }
    if (!exportedPackages.isEmpty())
        m.exportedPackages = exportedPackages;
}

Example 3 with Exports

use of java.lang.module.ModuleDescriptor.Exports in project Bytecoder by mirkosertic.

the class LauncherHelper method describeModule.

/**
 * Called by the launcher to describe a module
 */
static void describeModule(String moduleName) {
    initOutput(System.out);
    ModuleFinder finder = ModuleBootstrap.limitedFinder();
    ModuleReference mref = finder.find(moduleName).orElse(null);
    if (mref == null) {
        abort(null, "java.launcher.module.error4", moduleName);
    }
    ModuleDescriptor md = mref.descriptor();
    // one-line summary
    showModule(mref);
    // unqualified exports (sorted by package)
    md.exports().stream().filter(e -> !e.isQualified()).sorted(Comparator.comparing(Exports::source)).map(e -> Stream.concat(Stream.of(e.source()), toStringStream(e.modifiers())).collect(Collectors.joining(" "))).forEach(sourceAndMods -> ostream.format("exports %s%n", sourceAndMods));
    // dependences
    for (Requires r : md.requires()) {
        String nameAndMods = Stream.concat(Stream.of(r.name()), toStringStream(r.modifiers())).collect(Collectors.joining(" "));
        ostream.format("requires %s", nameAndMods);
        finder.find(r.name()).map(ModuleReference::descriptor).filter(ModuleDescriptor::isAutomatic).ifPresent(any -> ostream.print(" automatic"));
        ostream.println();
    }
    // service use and provides
    for (String s : md.uses()) {
        ostream.format("uses %s%n", s);
    }
    for (Provides ps : md.provides()) {
        String names = ps.providers().stream().collect(Collectors.joining(" "));
        ostream.format("provides %s with %s%n", ps.service(), names);
    }
    // qualified exports
    for (Exports e : md.exports()) {
        if (e.isQualified()) {
            String who = e.targets().stream().collect(Collectors.joining(" "));
            ostream.format("qualified exports %s to %s%n", e.source(), who);
        }
    }
    // open packages
    for (Opens opens : md.opens()) {
        if (opens.isQualified())
            ostream.print("qualified ");
        String sourceAndMods = Stream.concat(Stream.of(opens.source()), toStringStream(opens.modifiers())).collect(Collectors.joining(" "));
        ostream.format("opens %s", sourceAndMods);
        if (opens.isQualified()) {
            String who = opens.targets().stream().collect(Collectors.joining(" "));
            ostream.format(" to %s", who);
        }
        ostream.println();
    }
    // non-exported/non-open packages
    Set<String> concealed = new TreeSet<>(md.packages());
    md.exports().stream().map(Exports::source).forEach(concealed::remove);
    md.opens().stream().map(Opens::source).forEach(concealed::remove);
    concealed.forEach(p -> ostream.format("contains %s%n", p));
}