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src/share/classes/com/sun/tools/javadoc/WildcardTypeImpl.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javadoc/WildcardTypeImpl.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 1359

25e14ad23cef

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.tools.javadoc;
aoqi@0	27
aoqi@0	28	import com.sun.javadoc.*;
aoqi@0	29
aoqi@0	30	import com.sun.tools.javac.code.Symbol.ClassSymbol;
aoqi@0	31	import com.sun.tools.javac.code.Type;
aoqi@0	32	import com.sun.tools.javac.util.List;
aoqi@0	33
aoqi@0	34
aoqi@0	35	/**
aoqi@0	36	* Implementation of <code>WildcardType</code>, which
aoqi@0	37	* represents a wildcard type.
aoqi@0	38	*
aoqi@0	39	* <p><b>This is NOT part of any supported API.
aoqi@0	40	* If you write code that depends on this, you do so at your own risk.
aoqi@0	41	* This code and its internal interfaces are subject to change or
aoqi@0	42	* deletion without notice.</b>
aoqi@0	43	*
aoqi@0	44	* @author Scott Seligman
aoqi@0	45	* @since 1.5
aoqi@0	46	*/
aoqi@0	47	public class WildcardTypeImpl extends AbstractTypeImpl implements WildcardType {
aoqi@0	48
aoqi@0	49	WildcardTypeImpl(DocEnv env, Type.WildcardType type) {
aoqi@0	50	super(env, type);
aoqi@0	51	}
aoqi@0	52
aoqi@0	53	/**
aoqi@0	54	* Return the upper bounds of this wildcard type argument
aoqi@0	55	* as given by the <i>extends</i> clause.
aoqi@0	56	* Return an empty array if no such bounds are explicitly given.
aoqi@0	57	*/
aoqi@0	58	public com.sun.javadoc.Type[] extendsBounds() {
aoqi@0	59	return TypeMaker.getTypes(env, getExtendsBounds((Type.WildcardType)type));
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	/**
aoqi@0	63	* Return the lower bounds of this wildcard type argument
aoqi@0	64	* as given by the <i>super</i> clause.
aoqi@0	65	* Return an empty array if no such bounds are explicitly given.
aoqi@0	66	*/
aoqi@0	67	public com.sun.javadoc.Type[] superBounds() {
aoqi@0	68	return TypeMaker.getTypes(env, getSuperBounds((Type.WildcardType)type));
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	/**
aoqi@0	72	* Return the ClassDoc of the erasure of this wildcard type.
aoqi@0	73	*/
aoqi@0	74	@Override
aoqi@0	75	public ClassDoc asClassDoc() {
aoqi@0	76	return env.getClassDoc((ClassSymbol)env.types.erasure(type).tsym);
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	@Override
aoqi@0	80	public WildcardType asWildcardType() {
aoqi@0	81	return this;
aoqi@0	82	}
aoqi@0	83
aoqi@0	84	@Override
aoqi@0	85	public String typeName() { return "?"; }
aoqi@0	86	@Override
aoqi@0	87	public String qualifiedTypeName() { return "?"; }
aoqi@0	88	@Override
aoqi@0	89	public String simpleTypeName() { return "?"; }
aoqi@0	90
aoqi@0	91	@Override
aoqi@0	92	public String toString() {
aoqi@0	93	return wildcardTypeToString(env, (Type.WildcardType)type, true);
aoqi@0	94	}
aoqi@0	95
aoqi@0	96
aoqi@0	97	/**
aoqi@0	98	* Return the string form of a wildcard type ("?") along with any
aoqi@0	99	* "extends" or "super" clause. Delimiting brackets are not
aoqi@0	100	* included. Class names are qualified if "full" is true.
aoqi@0	101	*/
aoqi@0	102	static String wildcardTypeToString(DocEnv env,
aoqi@0	103	Type.WildcardType wildThing, boolean full) {
aoqi@0	104	if (env.legacyDoclet) {
aoqi@0	105	return TypeMaker.getTypeName(env.types.erasure(wildThing), full);
aoqi@0	106	}
aoqi@0	107	StringBuilder s = new StringBuilder("?");
aoqi@0	108	List<Type> bounds = getExtendsBounds(wildThing);
aoqi@0	109	if (bounds.nonEmpty()) {
aoqi@0	110	s.append(" extends ");
aoqi@0	111	} else {
aoqi@0	112	bounds = getSuperBounds(wildThing);
aoqi@0	113	if (bounds.nonEmpty()) {
aoqi@0	114	s.append(" super ");
aoqi@0	115	}
aoqi@0	116	}
aoqi@0	117	boolean first = true; // currently only one bound is allowed
aoqi@0	118	for (Type b : bounds) {
aoqi@0	119	if (!first) {
aoqi@0	120	s.append(" & ");
aoqi@0	121	}
aoqi@0	122	s.append(TypeMaker.getTypeString(env, b, full));
aoqi@0	123	first = false;
aoqi@0	124	}
aoqi@0	125	return s.toString();
aoqi@0	126	}
aoqi@0	127
aoqi@0	128	private static List<Type> getExtendsBounds(Type.WildcardType wild) {
aoqi@0	129	return wild.isSuperBound()
aoqi@0	130	? List.<Type>nil()
aoqi@0	131	: List.of(wild.type);
aoqi@0	132	}
aoqi@0	133
aoqi@0	134	private static List<Type> getSuperBounds(Type.WildcardType wild) {
aoqi@0	135	return wild.isExtendsBound()
aoqi@0	136	? List.<Type>nil()
aoqi@0	137	: List.of(wild.type);
aoqi@0	138	}
aoqi@0	139	}