jdk-sandbox: src/java.base/share/classes/jdk/internal/module/DefaultRoots.java@6cc2dc161c64 (annotated)

46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	1	/*
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	2	* Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	4	*
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	5	* This code is free software; you can redistribute it and/or modify it
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	6	* under the terms of the GNU General Public License version 2 only, as
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	7	* published by the Free Software Foundation. Oracle designates this
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	8	* particular file as subject to the "Classpath" exception as provided
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	9	* by Oracle in the LICENSE file that accompanied this code.
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	10	*
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	11	* This code is distributed in the hope that it will be useful, but WITHOUT
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	14	* version 2 for more details (a copy is included in the LICENSE file that
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	15	* accompanied this code).
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	16	*
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	17	* You should have received a copy of the GNU General Public License version
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	18	* 2 along with this work; if not, write to the Free Software Foundation,
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	20	*
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	22	* or visit www.oracle.com if you need additional information or have any
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	23	* questions.
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	24	*/
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	25
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	26	package jdk.internal.module;
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	27
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	28	import java.lang.module.ModuleDescriptor;
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	29	import java.lang.module.ModuleFinder;
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	30	import java.lang.module.ModuleReference;
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	31	import java.util.Set;
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	32	import java.util.stream.Collectors;
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	33
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	34	/**
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	35	* Defines methods to compute the default set of root modules for the unnamed
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	36	* module.
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	37	*/
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	38
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	39	public final class DefaultRoots {
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	40	private DefaultRoots() { }
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	41
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	42	/**
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	43	* Returns the default set of root modules for the unnamed module from the
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	44	* modules observable with the intersection of two module finders.
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	45	*
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	46	* The first module finder should be the module finder that finds modules on
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	47	* the upgrade module path or among the system modules. The second module
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	48	* finder should be the module finder that finds all modules on the module
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	49	* path, or a subset of when using --limit-modules.
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	50	*/
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	51	static Set<String> compute(ModuleFinder finder1, ModuleFinder finder2) {
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	52	return finder1.findAll().stream()
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	53	.filter(mref -> !ModuleResolution.doNotResolveByDefault(mref))
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	54	.map(ModuleReference::descriptor)
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	55	.filter(descriptor -> finder2.find(descriptor.name()).isPresent()
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	56	&& exportsAPI(descriptor))
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	57	.map(ModuleDescriptor::name)
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	58	.collect(Collectors.toSet());
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	59	}
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	60
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	61	/**
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	62	* Returns the default set of root modules for the unnamed module from the
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	63	* modules observable with the given module finder.
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	64	*
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	65	* This method is used by the jlink system modules plugin.
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	66	*/
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	67	public static Set<String> compute(ModuleFinder finder) {
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	68	return compute(finder, finder);
62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	69	}
50738 6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	70
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	71	/**
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	72	* Returns true if the given module exports a package to all modules
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	73	*/
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	74	private static boolean exportsAPI(ModuleDescriptor descriptor) {
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	75	return descriptor.exports()
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	76	.stream()
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	77	.filter(e -> !e.isQualified())
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	78	.findAny()
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	79	.isPresent();
6cc2dc161c64 8197532: Re-examine policy for the default set of modules when compiling or running code on the class path alanb parents: 47216 diff changeset	80	}
46096 62c77b334012 8185853: Generate readability graph at link time and other startup improvements alanb parents: diff changeset	81	}

author	alanb
	Sat, 23 Jun 2018 08:03:52 +0100
changeset 50738	6cc2dc161c64
parent 47216	71c04702a3d5
permissions	-rw-r--r--