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comparison graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/core/range/FixnumRange.java @ 13514:0fbee3eb71f0

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Ruby: import project.
author Chris Seaton <chris.seaton@oracle.com>
date Mon, 06 Jan 2014 17:12:09 +0000
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13513:64a23ce736a0 13514:0fbee3eb71f0
1 /*
2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.runtime.core.range;
11
12 import com.oracle.truffle.ruby.runtime.core.*;
13 import com.oracle.truffle.ruby.runtime.core.array.*;
14
15 /**
16 * A range that has {@code Fixnum} begin and end.
17 */
18 public class FixnumRange extends RubyRange {
19
20 private final int begin;
21 private final int end;
22 private final boolean excludeEnd;
23
24 public FixnumRange(RubyClass rangeClass, int begin, int end, boolean excludeEnd) {
25 super(rangeClass);
26 this.begin = begin;
27 this.end = end;
28 this.excludeEnd = excludeEnd;
29 }
30
31 @Override
32 public String toString() {
33 if (excludeEnd) {
34 return begin + "..." + end;
35 } else {
36 return begin + ".." + end;
37 }
38 }
39
40 @Override
41 public RubyArray toArray() {
42 final int length = getLength();
43
44 if (length < 0) {
45 return new RubyArray(getRubyClass().getContext().getCoreLibrary().getArrayClass());
46 } else {
47 final int[] values = new int[length];
48
49 for (int n = 0; n < length; n++) {
50 values[n] = begin + n;
51 }
52
53 return new RubyArray(getRubyClass().getContext().getCoreLibrary().getArrayClass(), new FixnumArrayStore(values));
54 }
55 }
56
57 private int getLength() {
58 if (excludeEnd) {
59 return end - begin;
60 } else {
61 return end - begin + 1;
62 }
63 }
64
65 public final int getBegin() {
66 return begin;
67 }
68
69 public final int getEnd() {
70 return end;
71 }
72
73 public final int getInclusiveEnd() {
74 if (excludeEnd) {
75 return end - 1;
76 } else {
77 return end;
78 }
79 }
80
81 public final int getExclusiveEnd() {
82 if (excludeEnd) {
83 return end;
84 } else {
85 return end + 1;
86 }
87 }
88
89 @Override
90 public boolean doesExcludeEnd() {
91 return excludeEnd;
92 }
93
94 @Override
95 public int hashCode() {
96 final int prime = 31;
97 int result = 1;
98 result = prime * result + begin;
99 result = prime * result + end;
100 result = prime * result + (excludeEnd ? 1231 : 1237);
101 return result;
102 }
103
104 @Override
105 public boolean equals(Object obj) {
106 if (this == obj) {
107 return true;
108 }
109 if (obj == null) {
110 return false;
111 }
112 if (!(obj instanceof FixnumRange)) {
113 return false;
114 }
115 FixnumRange other = (FixnumRange) obj;
116 if (begin != other.begin) {
117 return false;
118 }
119 if (end != other.end) {
120 return false;
121 }
122 if (excludeEnd != other.excludeEnd) {
123 return false;
124 }
125 return true;
126 }
127
128 }