Mercurial > jdk8-mips64-public > jaxws / file comparison

comparison: src/share/jaxws_classes/com/sun/tools/internal/xjc/model/Multiplicity.java

src/share/jaxws_classes/com/sun/tools/internal/xjc/model/Multiplicity.java

changeset 0
373ffda63c9a
equal deleted inserted replaced
-1:000000000000 0:373ffda63c9a
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.internal.xjc.model;
27
28 import java.math.BigInteger;
29
30
31
32 /**
33 * represents a possible number of occurence.
34 *
35 * Usually, denoted by a pair of integers like (1,1) or (5,10).
36 * A special value "unbounded" is allowed as the upper bound.
37 *
38 * <p>
39 * For example, (0,unbounded) corresponds to the '*' occurence of DTD.
40 * (0,1) corresponds to the '?' occurence of DTD.
41 *
42 * @author
43 * <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
44 */
45 public final class Multiplicity {
46 public final BigInteger min;
47 public final BigInteger max; // null is used to represent "unbounded".
48
49 public static Multiplicity create(BigInteger min, BigInteger max ) {
50 if (BigInteger.ZERO.equals(min) && max==null) return STAR;
51 if (BigInteger.ONE.equals(min) && max==null) return PLUS;
52 if (max!=null) {
53 if(BigInteger.ZERO.equals(min) && BigInteger.ZERO.equals(max)) return ZERO;
54 if(BigInteger.ZERO.equals(min) && BigInteger.ONE.equals(max)) return OPTIONAL;
55 if(BigInteger.ONE.equals(min) && BigInteger.ONE.equals(max)) return ONE;
56 }
57 return new Multiplicity(min, max);
58 }
59
60 public static Multiplicity create(int min, Integer max ) {
61 return Multiplicity.create(BigInteger.valueOf(min), BigInteger.valueOf(max.intValue()));
62 }
63
64 private Multiplicity(BigInteger min, BigInteger max) {
65 this.min = min;
66 this.max = max;
67 }
68
69 private Multiplicity(int min, int max) {
70 this(BigInteger.valueOf(min), BigInteger.valueOf(max));
71 }
72
73 private Multiplicity(int min, Integer max) {
74 this(BigInteger.valueOf(min), (max == null) ? null : BigInteger.valueOf(max));
75 }
76
77 @Override
78 public boolean equals(Object o) {
79 if (!(o instanceof Multiplicity)) return false;
80
81 Multiplicity that = (Multiplicity) o;
82
83 if (!this.min.equals(that.min)) return false;
84 if (this.max != null ? !this.max.equals(that.max) : that.max != null) return false;
85
86 return true;
87 }
88
89 @Override
90 public int hashCode() {
91 return min.add(max).intValue();
92 }
93
94 /** returns true if the multiplicity is (1,1). */
95 public boolean isUnique() {
96 if(max==null) return false;
97 return BigInteger.ONE.equals(min) && BigInteger.ONE.equals(max);
98 }
99
100 /** returns true if the multiplicity is (0,1) */
101 public boolean isOptional() {
102 if(max==null) return false;
103 return BigInteger.ZERO.equals(min) && BigInteger.ONE.equals(max);
104 }
105
106 /** returns true if the multiplicity is (0,1) or (1,1). */
107 public boolean isAtMostOnce() {
108 if(max==null) return false;
109 return max.compareTo(BigInteger.ONE)<=0;
110 }
111
112 /** returns true if the multiplicity is (0,0). */
113 public boolean isZero() {
114 if(max==null) return false;
115 return BigInteger.ZERO.equals(max);
116 }
117
118 /**
119 * Returns true if the multiplicity represented by this object
120 * completely includes the multiplicity represented by the
121 * other object. For example, we say [1,3] includes [1,2] but
122 * [2,4] doesn't include [1,3].
123 */
124 public boolean includes( Multiplicity rhs ) {
125 if (rhs.min.compareTo(min) == -1) return false;
126 if (max==null) return true;
127 if (rhs.max==null) return false;
128 return rhs.max.compareTo(max) <= 0;
129 }
130
131 /**
132 * Returns the string representation of the 'max' property.
133 * Either a number or a token "unbounded".
134 */
135 public String getMaxString() {
136 if(max==null) return "unbounded";
137 else return max.toString();
138 }
139
140 /** gets the string representation.
141 * mainly debug purpose.
142 */
143 @Override
144 public String toString() {
145 return "("+min+','+getMaxString()+')';
146 }
147
148 /** the constant representing the (0,0) multiplicity. */
149 public static final Multiplicity ZERO = new Multiplicity(0,0);
150
151 /** the constant representing the (1,1) multiplicity. */
152 public static final Multiplicity ONE = new Multiplicity(1,1);
153
154 /** the constant representing the (0,1) multiplicity. */
155 public static final Multiplicity OPTIONAL = new Multiplicity(0,1);
156
157 /** the constant representing the (0,unbounded) multiplicity. */
158 public static final Multiplicity STAR = new Multiplicity(0,null);
159
160 /** the constant representing the (1,unbounded) multiplicity. */
161 public static final Multiplicity PLUS = new Multiplicity(1,null);
162
163 // arithmetic methods
164 public static Multiplicity choice( Multiplicity lhs, Multiplicity rhs ) {
165 return create(
166 lhs.min.min(rhs.min),
167 (lhs.max==null || rhs.max==null) ? null : lhs.max.max(rhs.max) );
168 }
169 public static Multiplicity group( Multiplicity lhs, Multiplicity rhs ) {
170 return create(
171 lhs.min.add(rhs.min),
172 (lhs.max==null || rhs.max==null) ? null : lhs.max.add(rhs.max) );
173 }
174 public static Multiplicity multiply( Multiplicity lhs, Multiplicity rhs ) {
175 BigInteger min = lhs.min.multiply(rhs.min);
176 BigInteger max;
177 if (isZero(lhs.max) || isZero(rhs.max))
178 max = BigInteger.ZERO;
179 else
180 if (lhs.max==null || rhs.max==null)
181 max = null;
182 else
183 max = lhs.max.multiply(rhs.max);
184 return create(min,max);
185 }
186
187 private static boolean isZero(BigInteger i) {
188 return (i != null && BigInteger.ZERO.equals(i));
189 }
190
191 public static Multiplicity oneOrMore( Multiplicity c ) {
192 if(c.max==null) return c; // (x,*) => (x,*)
193 if(BigInteger.ZERO.equals(c.max)) return c; // (0,0) => (0,0)
194 else return create( c.min, null ); // (x,y) => (x,*)
195 }
196
197 public Multiplicity makeOptional() {
198 if (BigInteger.ZERO.equals(min)) return this;
199 return create(BigInteger.ZERO, max);
200 }
201
202 public Multiplicity makeRepeated() {
203 if (max==null || BigInteger.ZERO.equals(max)) return this; // (0,0)* = (0,0) and (n,unbounded)* = (n,unbounded)
204 return create(min,null);
205 }
206 }

Mercurial Repository: jdk8-mips64-public/jaxws

mercurial