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Diffstat (limited to 'infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java')
-rw-r--r--infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java388
1 files changed, 0 insertions, 388 deletions
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java
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index a9636a3..0000000
--- a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/ObjArray.java
+++ /dev/null
@@ -1,388 +0,0 @@
-/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Rhino code, released
- * May 6, 1999.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1997-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Igor Bukanov
- *
- * Alternatively, the contents of this file may be used under the terms of
- * the GNU General Public License Version 2 or later (the "GPL"), in which
- * case the provisions of the GPL are applicable instead of those above. If
- * you wish to allow use of your version of this file only under the terms of
- * the GPL and not to allow others to use your version of this file under the
- * MPL, indicate your decision by deleting the provisions above and replacing
- * them with the notice and other provisions required by the GPL. If you do
- * not delete the provisions above, a recipient may use your version of this
- * file under either the MPL or the GPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-package org.mozilla.javascript;
-
-import java.io.Serializable;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-
-/**
-Implementation of resizable array with focus on minimizing memory usage by storing few initial array elements in object fields. Can also be used as a stack.
-*/
-
-public class ObjArray implements Serializable
-{
- static final long serialVersionUID = 4174889037736658296L;
-
- public ObjArray() { }
-
- public final boolean isSealed()
- {
- return sealed;
- }
-
- public final void seal()
- {
- sealed = true;
- }
-
- public final boolean isEmpty()
- {
- return size == 0;
- }
-
- public final int size()
- {
- return size;
- }
-
- public final void setSize(int newSize)
- {
- if (newSize < 0) throw new IllegalArgumentException();
- if (sealed) throw onSeledMutation();
- int N = size;
- if (newSize < N) {
- for (int i = newSize; i != N; ++i) {
- setImpl(i, null);
- }
- } else if (newSize > N) {
- if (newSize > FIELDS_STORE_SIZE) {
- ensureCapacity(newSize);
- }
- }
- size = newSize;
- }
-
- public final Object get(int index)
- {
- if (!(0 <= index && index < size)) throw onInvalidIndex(index, size);
- return getImpl(index);
- }
-
- public final void set(int index, Object value)
- {
- if (!(0 <= index && index < size)) throw onInvalidIndex(index, size);
- if (sealed) throw onSeledMutation();
- setImpl(index, value);
- }
-
- private Object getImpl(int index)
- {
- switch (index) {
- case 0: return f0;
- case 1: return f1;
- case 2: return f2;
- case 3: return f3;
- case 4: return f4;
- }
- return data[index - FIELDS_STORE_SIZE];
- }
-
- private void setImpl(int index, Object value)
- {
- switch (index) {
- case 0: f0 = value; break;
- case 1: f1 = value; break;
- case 2: f2 = value; break;
- case 3: f3 = value; break;
- case 4: f4 = value; break;
- default: data[index - FIELDS_STORE_SIZE] = value;
- }
-
- }
-
- public int indexOf(Object obj)
- {
- int N = size;
- for (int i = 0; i != N; ++i) {
- Object current = getImpl(i);
- if (current == obj || (current != null && current.equals(obj))) {
- return i;
- }
- }
- return -1;
- }
-
- public int lastIndexOf(Object obj)
- {
- for (int i = size; i != 0;) {
- --i;
- Object current = getImpl(i);
- if (current == obj || (current != null && current.equals(obj))) {
- return i;
- }
- }
- return -1;
- }
-
- public final Object peek()
- {
- int N = size;
- if (N == 0) throw onEmptyStackTopRead();
- return getImpl(N - 1);
- }
-
- public final Object pop()
- {
- if (sealed) throw onSeledMutation();
- int N = size;
- --N;
- Object top;
- switch (N) {
- case -1: throw onEmptyStackTopRead();
- case 0: top = f0; f0 = null; break;
- case 1: top = f1; f1 = null; break;
- case 2: top = f2; f2 = null; break;
- case 3: top = f3; f3 = null; break;
- case 4: top = f4; f4 = null; break;
- default:
- top = data[N - FIELDS_STORE_SIZE];
- data[N - FIELDS_STORE_SIZE] = null;
- }
- size = N;
- return top;
- }
-
- public final void push(Object value)
- {
- add(value);
- }
-
- public final void add(Object value)
- {
- if (sealed) throw onSeledMutation();
- int N = size;
- if (N >= FIELDS_STORE_SIZE) {
- ensureCapacity(N + 1);
- }
- size = N + 1;
- setImpl(N, value);
- }
-
- public final void add(int index, Object value)
- {
- int N = size;
- if (!(0 <= index && index <= N)) throw onInvalidIndex(index, N + 1);
- if (sealed) throw onSeledMutation();
- Object tmp;
- switch (index) {
- case 0:
- if (N == 0) { f0 = value; break; }
- tmp = f0; f0 = value; value = tmp;
- case 1:
- if (N == 1) { f1 = value; break; }
- tmp = f1; f1 = value; value = tmp;
- case 2:
- if (N == 2) { f2 = value; break; }
- tmp = f2; f2 = value; value = tmp;
- case 3:
- if (N == 3) { f3 = value; break; }
- tmp = f3; f3 = value; value = tmp;
- case 4:
- if (N == 4) { f4 = value; break; }
- tmp = f4; f4 = value; value = tmp;
-
- index = FIELDS_STORE_SIZE;
- default:
- ensureCapacity(N + 1);
- if (index != N) {
- System.arraycopy(data, index - FIELDS_STORE_SIZE,
- data, index - FIELDS_STORE_SIZE + 1,
- N - index);
- }
- data[index - FIELDS_STORE_SIZE] = value;
- }
- size = N + 1;
- }
-
- public final void remove(int index)
- {
- int N = size;
- if (!(0 <= index && index < N)) throw onInvalidIndex(index, N);
- if (sealed) throw onSeledMutation();
- --N;
- switch (index) {
- case 0:
- if (N == 0) { f0 = null; break; }
- f0 = f1;
- case 1:
- if (N == 1) { f1 = null; break; }
- f1 = f2;
- case 2:
- if (N == 2) { f2 = null; break; }
- f2 = f3;
- case 3:
- if (N == 3) { f3 = null; break; }
- f3 = f4;
- case 4:
- if (N == 4) { f4 = null; break; }
- f4 = data[0];
-
- index = FIELDS_STORE_SIZE;
- default:
- if (index != N) {
- System.arraycopy(data, index - FIELDS_STORE_SIZE + 1,
- data, index - FIELDS_STORE_SIZE,
- N - index);
- }
- data[N - FIELDS_STORE_SIZE] = null;
- }
- size = N;
- }
-
- public final void clear()
- {
- if (sealed) throw onSeledMutation();
- int N = size;
- for (int i = 0; i != N; ++i) {
- setImpl(i, null);
- }
- size = 0;
- }
-
- public final Object[] toArray()
- {
- Object[] array = new Object[size];
- toArray(array, 0);
- return array;
- }
-
- public final void toArray(Object[] array)
- {
- toArray(array, 0);
- }
-
- public final void toArray(Object[] array, int offset)
- {
- int N = size;
- switch (N) {
- default:
- System.arraycopy(data, 0, array, offset + FIELDS_STORE_SIZE,
- N - FIELDS_STORE_SIZE);
- case 5: array[offset + 4] = f4;
- case 4: array[offset + 3] = f3;
- case 3: array[offset + 2] = f2;
- case 2: array[offset + 1] = f1;
- case 1: array[offset + 0] = f0;
- case 0: break;
- }
- }
-
- private void ensureCapacity(int minimalCapacity)
- {
- int required = minimalCapacity - FIELDS_STORE_SIZE;
- if (required <= 0) throw new IllegalArgumentException();
- if (data == null) {
- int alloc = FIELDS_STORE_SIZE * 2;
- if (alloc < required) {
- alloc = required;
- }
- data = new Object[alloc];
- } else {
- int alloc = data.length;
- if (alloc < required) {
- if (alloc <= FIELDS_STORE_SIZE) {
- alloc = FIELDS_STORE_SIZE * 2;
- } else {
- alloc *= 2;
- }
- if (alloc < required) {
- alloc = required;
- }
- Object[] tmp = new Object[alloc];
- if (size > FIELDS_STORE_SIZE) {
- System.arraycopy(data, 0, tmp, 0,
- size - FIELDS_STORE_SIZE);
- }
- data = tmp;
- }
- }
- }
-
- private static RuntimeException onInvalidIndex(int index, int upperBound)
- {
- // \u2209 is "NOT ELEMENT OF"
- String msg = index+" \u2209 [0, "+upperBound+')';
- throw new IndexOutOfBoundsException(msg);
- }
-
- private static RuntimeException onEmptyStackTopRead()
- {
- throw new RuntimeException("Empty stack");
- }
-
- private static RuntimeException onSeledMutation()
- {
- throw new IllegalStateException("Attempt to modify sealed array");
- }
-
- private void writeObject(ObjectOutputStream os) throws IOException
- {
- os.defaultWriteObject();
- int N = size;
- for (int i = 0; i != N; ++i) {
- Object obj = getImpl(i);
- os.writeObject(obj);
- }
- }
-
- private void readObject(ObjectInputStream is)
- throws IOException, ClassNotFoundException
- {
- is.defaultReadObject(); // It reads size
- int N = size;
- if (N > FIELDS_STORE_SIZE) {
- data = new Object[N - FIELDS_STORE_SIZE];
- }
- for (int i = 0; i != N; ++i) {
- Object obj = is.readObject();
- setImpl(i, obj);
- }
- }
-
-// Number of data elements
- private int size;
-
- private boolean sealed;
-
- private static final int FIELDS_STORE_SIZE = 5;
- private transient Object f0, f1, f2, f3, f4;
- private transient Object[] data;
-}
generated by cgit v1.2.3-1-g7c22 (git 2.25.1) at 2024-06-02 05:19:33 +0000