Source Code Cross Referenced for S16Vector.java in  » Scripting » Kawa » gnu » lists » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » Kawa » gnu.lists 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // Copyright (c) 2001, 2002  Per M.A. Bothner and Brainfood Inc.
002:        // This is free software;  for terms and warranty disclaimer see ./COPYING.
003:
004:        package gnu.lists;
005:
006:        import java.io.*;
007:
008:        /** Simple adjustable-length vector of signed 16-bit integers (shorts). */
009:
010:        public class S16Vector extends SimpleVector implements  Externalizable
011:        /* #ifdef JAVA2 */
012:        , Comparable
013:        /* #endif */
014:        {
015:            short[] data;
016:            protected static short[] empty = new short[0];
017:
018:            public S16Vector() {
019:                data = empty;
020:            }
021:
022:            public S16Vector(int size, short value) {
023:                short[] array = new short[size];
024:                data = array;
025:                this .size = size;
026:                while (--size >= 0)
027:                    array[size] = value;
028:            }
029:
030:            public S16Vector(int size) {
031:                this .data = new short[size];
032:                this .size = size;
033:            }
034:
035:            public S16Vector(short[] data) {
036:                this .data = data;
037:                size = data.length;
038:            }
039:
040:            public S16Vector(Sequence seq) {
041:                data = new short[seq.size()];
042:                addAll(seq);
043:            }
044:
045:            /** Get the allocated length of the data buffer. */
046:            public int getBufferLength() {
047:                return data.length;
048:            }
049:
050:            public void setBufferLength(int length) {
051:                int oldLength = data.length;
052:                if (oldLength != length) {
053:                    short[] tmp = new short[length];
054:                    System.arraycopy(data, 0, tmp, 0,
055:                            oldLength < length ? oldLength : length);
056:                    data = tmp;
057:                }
058:            }
059:
060:            protected Object getBuffer() {
061:                return data;
062:            }
063:
064:            public final short shortAt(int index) {
065:                if (index > size)
066:                    throw new IndexOutOfBoundsException();
067:                return data[index];
068:            }
069:
070:            public final short shortAtBuffer(int index) {
071:                return data[index];
072:            }
073:
074:            public final int intAtBuffer(int index) {
075:                return data[index];
076:            }
077:
078:            public final Object get(int index) {
079:                if (index > size)
080:                    throw new IndexOutOfBoundsException();
081:                return Convert.toObject(data[index]);
082:            }
083:
084:            public final Object getBuffer(int index) {
085:                return Convert.toObject(data[index]);
086:            }
087:
088:            public Object setBuffer(int index, Object value) {
089:                short old = data[index];
090:                data[index] = Convert.toShort(value);
091:                return Convert.toObject(old);
092:            }
093:
094:            public final void setShortAt(int index, short value) {
095:                if (index > size)
096:                    throw new IndexOutOfBoundsException();
097:                data[index] = value;
098:            }
099:
100:            public final void setShortAtBuffer(int index, short value) {
101:                data[index] = value;
102:            }
103:
104:            protected void clearBuffer(int start, int count) {
105:                while (--count >= 0)
106:                    data[start++] = 0;
107:            }
108:
109:            public int getElementKind() {
110:                return INT_S16_VALUE;
111:            }
112:
113:            public String getTag() {
114:                return "s16";
115:            }
116:
117:            public boolean consumeNext(int ipos, Consumer out) {
118:                int index = ipos >>> 1;
119:                if (index >= size)
120:                    return false;
121:                out.writeInt(data[index]);
122:                return true;
123:            }
124:
125:            public void consumePosRange(int iposStart, int iposEnd, Consumer out) {
126:                if (out.ignoring())
127:                    return;
128:                int i = iposStart >>> 1;
129:                int end = iposEnd >>> 1;
130:                if (end > size)
131:                    end = size;
132:                for (; i < end; i++)
133:                    out.writeInt(data[i]);
134:            }
135:
136:            public int compareTo(Object obj) {
137:                return compareToInt(this , (S16Vector) obj);
138:            }
139:
140:            /**
141:             * @serialData Write 'size' (using writeInt),
142:             *   followed by 'size' elements in order (using writeShort).
143:             */
144:            public void writeExternal(ObjectOutput out) throws IOException {
145:                int size = this .size;
146:                out.writeInt(size);
147:                for (int i = 0; i < size; i++)
148:                    out.writeShort(data[i]);
149:            }
150:
151:            public void readExternal(ObjectInput in) throws IOException,
152:                    ClassNotFoundException {
153:                int size = in.readInt();
154:                short[] data = new short[size];
155:                for (int i = 0; i < size; i++)
156:                    data[i] = in.readShort();
157:                this.data = data;
158:                this.size = size;
159:            }
160:        }
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