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AbstractCollection.java
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198 lines (167 loc) · 4.13 KB
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package com.sun.source.util;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Objects;
public abstract class AbstractCollection<E> implements Collection<E>
{
private static final int MAX_ARRAY_SIZE = 2147483639;
public abstract Iterator<E> iterator();
public abstract int size();
public boolean isEmpty() {
return this.size()==0;
}
public boolean contains(Object var1) {
Iterator var2=this.iterator();
if(var1==null) {
while(var2.hasNext()) {
if(var2.next()==null) {
return true;
}
}
}else {
while(var2.hasNext()) {
if(var2.next().equals(var1)) {
return true;
}
}
}
return false;
}
public Object[] toArray() {
Object[] var1=new Object[this.size()];
Iterator var2=this.iterator();
for(int var3=0;var3<var1.length;++var3) {
if(!var2.hasNext()) {
return Arrays.copyOf(var1, var3);
}
var1[var3]=var2.next();
}
return var2.hasNext() ? finishToArray(var1, var2) : var1;
}
/*public <T> T[] toArray(T[] var1) {
int var2 = this.size();
Object[] var3 = var1.length >= var2
? var1
: (Object[]) ((Object[]) Array.newInstance(var1.getClass().getComponentType(), var2));
Iterator var4 = this.iterator();
for (int var5 = 0; var5 < var3.length; ++var5) {
if (!var4.hasNext()) {
if (var1 == var3) {
var3[var5] = null;
} else {
if (var1.length < var5) {
return (T[]) Arrays.copyOf(var3, var5);
}
System.arraycopy(var3, 0, var1, 0, var5);
if (var1.length > var5) {
var1[var5] = null;
}
}
return var1;
}
var3[var5] = var4.next();
}
return var4.hasNext() ? finishToArray(var3, var4) : var3;
}*/
public boolean add(E var1) {
throw new UnsupportedOperationException();
}
private static <T> T[] finishToArray(T[] var0, Iterator<?> var1) {
int var2;
for (var2 = var0.length; var1.hasNext(); var0[var2++] = (T) var1.next()) {
int var3 = var0.length;
if (var2 == var3) {
int var4 = var3 + (var3 >> 1) + 1;
if (var4 - 2147483639 > 0) {
var4 = hugeCapacity(var3 + 1);
}
var0 = Arrays.copyOf(var0, var4);
}
}
return var2 == var0.length ? var0 : Arrays.copyOf(var0, var2);
}
private static int hugeCapacity(int var0) {
if (var0 < 0) {
throw new OutOfMemoryError("Required array size too large");
} else {
return var0 > 2147483639 ? Integer.MAX_VALUE : 2147483639;
}
}
public boolean remove(Object var1) {
Iterator var2=this.iterator();
if(var1==null) {
while(var2.hasNext()) {
if(var2.next()==null) {
var2.remove();
return true;
}
}
}else {
while(var2.hasNext()) {
if(var2.next().equals(var1)) {
var2.remove();
return true;
}
}
}
return false;
}
public boolean containsAll(Collection<?> var1) {
Iterator var2=this.iterator();
Object var3;
do {
if(!var2.hasNext()) {
return true;
}
var3=var2.next();
}while(this.contains(var3));
return false;
}
public boolean addAll(Collection<? extends E> var1) {
boolean var2=false;
Iterator var3=var1.iterator();
while(var3.hasNext()) {
Object var4=var3.next();
if(this.add((E) var4)) {
var2=true;
}
}
return var2;
}
public boolean removeAll(Collection<?> var1) {
Objects.requireNonNull(var1);
boolean var2=false;
Iterator var3=this.iterator();
while(var3.hasNext()) {
if(!var1.contains(var3.next())) {
var3.remove();
var2=true;
}
}
return var2;
}
public void clear() {
Iterator var1=this.iterator();
while(var1.hasNext()) {
var1.next();
var1.remove();
}
}
public String toString() {
Iterator var1=this.iterator();
if(!var1.hasNext()) {
return "[]";
}else {
StringBuilder var2=new StringBuilder();
var2.append("[");
while(true) {
Object var3=var1.next();
var2.append(var3==this?"(this Collection):":var3);
if(!var1.hasNext()) {
return var2.append("]").toString();
}
var2.append(',').append(' ');
}
}
}
}