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Diffstat (limited to 'third_party/protobuf/3.2.0/java/core/src/main/java/com/google/protobuf/Internal.java')
| -rw-r--r-- | third_party/protobuf/3.2.0/java/core/src/main/java/com/google/protobuf/Internal.java | 751 |
1 files changed, 0 insertions, 751 deletions
diff --git a/third_party/protobuf/3.2.0/java/core/src/main/java/com/google/protobuf/Internal.java b/third_party/protobuf/3.2.0/java/core/src/main/java/com/google/protobuf/Internal.java deleted file mode 100644 index c234559ce3..0000000000 --- a/third_party/protobuf/3.2.0/java/core/src/main/java/com/google/protobuf/Internal.java +++ /dev/null @@ -1,751 +0,0 @@ -// Protocol Buffers - Google's data interchange format -// Copyright 2008 Google Inc. All rights reserved. -// https://developers.google.com/protocol-buffers/ -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -package com.google.protobuf; - -import java.io.IOException; -import java.lang.reflect.Method; -import java.nio.ByteBuffer; -import java.nio.charset.Charset; -import java.util.AbstractList; -import java.util.AbstractMap; -import java.util.AbstractSet; -import java.util.Arrays; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.RandomAccess; -import java.util.Set; - -/** - * The classes contained within are used internally by the Protocol Buffer - * library and generated message implementations. They are public only because - * those generated messages do not reside in the {@code protobuf} package. - * Others should not use this class directly. - * - * @author kenton@google.com (Kenton Varda) - */ -public final class Internal { - - private Internal() {} - - static final Charset UTF_8 = Charset.forName("UTF-8"); - static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1"); - - /** - * Throws an appropriate {@link NullPointerException} if the given objects is {@code null}. - */ - static <T> T checkNotNull(T obj, String message) { - if (obj == null) { - throw new NullPointerException(message); - } - return obj; - } - - /** - * Helper called by generated code to construct default values for string - * fields. - * <p> - * The protocol compiler does not actually contain a UTF-8 decoder -- it - * just pushes UTF-8-encoded text around without touching it. The one place - * where this presents a problem is when generating Java string literals. - * Unicode characters in the string literal would normally need to be encoded - * using a Unicode escape sequence, which would require decoding them. - * To get around this, protoc instead embeds the UTF-8 bytes into the - * generated code and leaves it to the runtime library to decode them. - * <p> - * It gets worse, though. If protoc just generated a byte array, like: - * new byte[] {0x12, 0x34, 0x56, 0x78} - * Java actually generates *code* which allocates an array and then fills - * in each value. This is much less efficient than just embedding the bytes - * directly into the bytecode. To get around this, we need another - * work-around. String literals are embedded directly, so protoc actually - * generates a string literal corresponding to the bytes. The easiest way - * to do this is to use the ISO-8859-1 character set, which corresponds to - * the first 256 characters of the Unicode range. Protoc can then use - * good old CEscape to generate the string. - * <p> - * So we have a string literal which represents a set of bytes which - * represents another string. This function -- stringDefaultValue -- - * converts from the generated string to the string we actually want. The - * generated code calls this automatically. - */ - public static String stringDefaultValue(String bytes) { - return new String(bytes.getBytes(ISO_8859_1), UTF_8); - } - - /** - * Helper called by generated code to construct default values for bytes - * fields. - * <p> - * This is a lot like {@link #stringDefaultValue}, but for bytes fields. - * In this case we only need the second of the two hacks -- allowing us to - * embed raw bytes as a string literal with ISO-8859-1 encoding. - */ - public static ByteString bytesDefaultValue(String bytes) { - return ByteString.copyFrom(bytes.getBytes(ISO_8859_1)); - } - /** - * Helper called by generated code to construct default values for bytes - * fields. - * <p> - * This is like {@link #bytesDefaultValue}, but returns a byte array. - */ - public static byte[] byteArrayDefaultValue(String bytes) { - return bytes.getBytes(ISO_8859_1); - } - - /** - * Helper called by generated code to construct default values for bytes - * fields. - * <p> - * This is like {@link #bytesDefaultValue}, but returns a ByteBuffer. - */ - public static ByteBuffer byteBufferDefaultValue(String bytes) { - return ByteBuffer.wrap(byteArrayDefaultValue(bytes)); - } - - /** - * Create a new ByteBuffer and copy all the content of {@code source} - * ByteBuffer to the new ByteBuffer. The new ByteBuffer's limit and - * capacity will be source.capacity(), and its position will be 0. - * Note that the state of {@code source} ByteBuffer won't be changed. - */ - public static ByteBuffer copyByteBuffer(ByteBuffer source) { - // Make a duplicate of the source ByteBuffer and read data from the - // duplicate. This is to avoid affecting the source ByteBuffer's state. - ByteBuffer temp = source.duplicate(); - // We want to copy all the data in the source ByteBuffer, not just the - // remaining bytes. - temp.clear(); - ByteBuffer result = ByteBuffer.allocate(temp.capacity()); - result.put(temp); - result.clear(); - return result; - } - - /** - * Helper called by generated code to determine if a byte array is a valid - * UTF-8 encoded string such that the original bytes can be converted to - * a String object and then back to a byte array round tripping the bytes - * without loss. More precisely, returns {@code true} whenever: - * <pre> {@code - * Arrays.equals(byteString.toByteArray(), - * new String(byteString.toByteArray(), "UTF-8").getBytes("UTF-8")) - * }</pre> - * - * <p>This method rejects "overlong" byte sequences, as well as - * 3-byte sequences that would map to a surrogate character, in - * accordance with the restricted definition of UTF-8 introduced in - * Unicode 3.1. Note that the UTF-8 decoder included in Oracle's - * JDK has been modified to also reject "overlong" byte sequences, - * but currently (2011) still accepts 3-byte surrogate character - * byte sequences. - * - * <p>See the Unicode Standard,<br> - * Table 3-6. <em>UTF-8 Bit Distribution</em>,<br> - * Table 3-7. <em>Well Formed UTF-8 Byte Sequences</em>. - * - * <p>As of 2011-02, this method simply returns the result of {@link - * ByteString#isValidUtf8()}. Calling that method directly is preferred. - * - * @param byteString the string to check - * @return whether the byte array is round trippable - */ - public static boolean isValidUtf8(ByteString byteString) { - return byteString.isValidUtf8(); - } - - /** - * Like {@link #isValidUtf8(ByteString)} but for byte arrays. - */ - public static boolean isValidUtf8(byte[] byteArray) { - return Utf8.isValidUtf8(byteArray); - } - - /** - * Helper method to get the UTF-8 bytes of a string. - */ - public static byte[] toByteArray(String value) { - return value.getBytes(UTF_8); - } - - /** - * Helper method to convert a byte array to a string using UTF-8 encoding. - */ - public static String toStringUtf8(byte[] bytes) { - return new String(bytes, UTF_8); - } - - /** - * Interface for an enum value or value descriptor, to be used in FieldSet. - * The lite library stores enum values directly in FieldSets but the full - * library stores EnumValueDescriptors in order to better support reflection. - */ - public interface EnumLite { - int getNumber(); - } - - /** - * Interface for an object which maps integers to {@link EnumLite}s. - * {@link Descriptors.EnumDescriptor} implements this interface by mapping - * numbers to {@link Descriptors.EnumValueDescriptor}s. Additionally, - * every generated enum type has a static method internalGetValueMap() which - * returns an implementation of this type that maps numbers to enum values. - */ - public interface EnumLiteMap<T extends EnumLite> { - T findValueByNumber(int number); - } - - /** - * Helper method for implementing {@link Message#hashCode()} for longs. - * @see Long#hashCode() - */ - public static int hashLong(long n) { - return (int) (n ^ (n >>> 32)); - } - - /** - * Helper method for implementing {@link Message#hashCode()} for - * booleans. - * @see Boolean#hashCode() - */ - public static int hashBoolean(boolean b) { - return b ? 1231 : 1237; - } - - /** - * Helper method for implementing {@link Message#hashCode()} for enums. - * <p> - * This is needed because {@link java.lang.Enum#hashCode()} is final, but we - * need to use the field number as the hash code to ensure compatibility - * between statically and dynamically generated enum objects. - */ - public static int hashEnum(EnumLite e) { - return e.getNumber(); - } - - /** - * Helper method for implementing {@link Message#hashCode()} for - * enum lists. - */ - public static int hashEnumList(List<? extends EnumLite> list) { - int hash = 1; - for (EnumLite e : list) { - hash = 31 * hash + hashEnum(e); - } - return hash; - } - - /** - * Helper method for implementing {@link Message#equals(Object)} for bytes field. - */ - public static boolean equals(List<byte[]> a, List<byte[]> b) { - if (a.size() != b.size()) return false; - for (int i = 0; i < a.size(); ++i) { - if (!Arrays.equals(a.get(i), b.get(i))) { - return false; - } - } - return true; - } - - /** - * Helper method for implementing {@link Message#hashCode()} for bytes field. - */ - public static int hashCode(List<byte[]> list) { - int hash = 1; - for (byte[] bytes : list) { - hash = 31 * hash + hashCode(bytes); - } - return hash; - } - - /** - * Helper method for implementing {@link Message#hashCode()} for bytes field. - */ - public static int hashCode(byte[] bytes) { - // The hash code for a byte array should be the same as the hash code for a - // ByteString with the same content. This is to ensure that the generated - // hashCode() method will return the same value as the pure reflection - // based hashCode() method. - return Internal.hashCode(bytes, 0, bytes.length); - } - - /** - * Helper method for implementing {@link LiteralByteString#hashCode()}. - */ - static int hashCode(byte[] bytes, int offset, int length) { - // The hash code for a byte array should be the same as the hash code for a - // ByteString with the same content. This is to ensure that the generated - // hashCode() method will return the same value as the pure reflection - // based hashCode() method. - int h = Internal.partialHash(length, bytes, offset, length); - return h == 0 ? 1 : h; - } - - /** - * Helper method for continuously hashing bytes. - */ - static int partialHash(int h, byte[] bytes, int offset, int length) { - for (int i = offset; i < offset + length; i++) { - h = h * 31 + bytes[i]; - } - return h; - } - - /** - * Helper method for implementing {@link Message#equals(Object)} for bytes - * field. - */ - public static boolean equalsByteBuffer(ByteBuffer a, ByteBuffer b) { - if (a.capacity() != b.capacity()) { - return false; - } - // ByteBuffer.equals() will only compare the remaining bytes, but we want to - // compare all the content. - return a.duplicate().clear().equals(b.duplicate().clear()); - } - - /** - * Helper method for implementing {@link Message#equals(Object)} for bytes - * field. - */ - public static boolean equalsByteBuffer( - List<ByteBuffer> a, List<ByteBuffer> b) { - if (a.size() != b.size()) { - return false; - } - for (int i = 0; i < a.size(); ++i) { - if (!equalsByteBuffer(a.get(i), b.get(i))) { - return false; - } - } - return true; - } - - /** - * Helper method for implementing {@link Message#hashCode()} for bytes - * field. - */ - public static int hashCodeByteBuffer(List<ByteBuffer> list) { - int hash = 1; - for (ByteBuffer bytes : list) { - hash = 31 * hash + hashCodeByteBuffer(bytes); - } - return hash; - } - - private static final int DEFAULT_BUFFER_SIZE = 4096; - - /** - * Helper method for implementing {@link Message#hashCode()} for bytes - * field. - */ - public static int hashCodeByteBuffer(ByteBuffer bytes) { - if (bytes.hasArray()) { - // Fast path. - int h = partialHash(bytes.capacity(), bytes.array(), bytes.arrayOffset(), bytes.capacity()); - return h == 0 ? 1 : h; - } else { - // Read the data into a temporary byte array before calculating the - // hash value. - final int bufferSize = bytes.capacity() > DEFAULT_BUFFER_SIZE - ? DEFAULT_BUFFER_SIZE : bytes.capacity(); - final byte[] buffer = new byte[bufferSize]; - final ByteBuffer duplicated = bytes.duplicate(); - duplicated.clear(); - int h = bytes.capacity(); - while (duplicated.remaining() > 0) { - final int length = duplicated.remaining() <= bufferSize ? - duplicated.remaining() : bufferSize; - duplicated.get(buffer, 0, length); - h = partialHash(h, buffer, 0, length); - } - return h == 0 ? 1 : h; - } - } - - @SuppressWarnings("unchecked") - public static <T extends MessageLite> T getDefaultInstance(Class<T> clazz) { - try { - Method method = clazz.getMethod("getDefaultInstance"); - return (T) method.invoke(method); - } catch (Exception e) { - throw new RuntimeException( - "Failed to get default instance for " + clazz, e); - } - } - - /** - * An empty byte array constant used in generated code. - */ - public static final byte[] EMPTY_BYTE_ARRAY = new byte[0]; - - /** - * An empty byte array constant used in generated code. - */ - public static final ByteBuffer EMPTY_BYTE_BUFFER = - ByteBuffer.wrap(EMPTY_BYTE_ARRAY); - - /** An empty coded input stream constant used in generated code. */ - public static final CodedInputStream EMPTY_CODED_INPUT_STREAM = - CodedInputStream.newInstance(EMPTY_BYTE_ARRAY); - - - /** - * Provides an immutable view of {@code List<T>} around a {@code List<F>}. - * - * Protobuf internal. Used in protobuf generated code only. - */ - public static class ListAdapter<F, T> extends AbstractList<T> { - /** - * Convert individual elements of the List from F to T. - */ - public interface Converter<F, T> { - T convert(F from); - } - - private final List<F> fromList; - private final Converter<F, T> converter; - - public ListAdapter(List<F> fromList, Converter<F, T> converter) { - this.fromList = fromList; - this.converter = converter; - } - - @Override - public T get(int index) { - return converter.convert(fromList.get(index)); - } - - @Override - public int size() { - return fromList.size(); - } - } - - /** - * Wrap around a {@code Map<K, RealValue>} and provide a {@code Map<K, V>} - * interface. - */ - public static class MapAdapter<K, V, RealValue> extends AbstractMap<K, V> { - /** - * An interface used to convert between two types. - */ - public interface Converter<A, B> { - B doForward(A object); - A doBackward(B object); - } - - public static <T extends EnumLite> Converter<Integer, T> newEnumConverter( - final EnumLiteMap<T> enumMap, final T unrecognizedValue) { - return new Converter<Integer, T>() { - @Override - public T doForward(Integer value) { - T result = enumMap.findValueByNumber(value); - return result == null ? unrecognizedValue : result; - } - - @Override - public Integer doBackward(T value) { - return value.getNumber(); - } - }; - } - - private final Map<K, RealValue> realMap; - private final Converter<RealValue, V> valueConverter; - - public MapAdapter(Map<K, RealValue> realMap, - Converter<RealValue, V> valueConverter) { - this.realMap = realMap; - this.valueConverter = valueConverter; - } - - @SuppressWarnings("unchecked") - @Override - public V get(Object key) { - RealValue result = realMap.get(key); - if (result == null) { - return null; - } - return valueConverter.doForward(result); - } - - @Override - public V put(K key, V value) { - RealValue oldValue = realMap.put(key, valueConverter.doBackward(value)); - if (oldValue == null) { - return null; - } - return valueConverter.doForward(oldValue); - } - - @Override - public Set<java.util.Map.Entry<K, V>> entrySet() { - return new SetAdapter(realMap.entrySet()); - } - - private class SetAdapter extends AbstractSet<Map.Entry<K, V>> { - private final Set<Map.Entry<K, RealValue>> realSet; - public SetAdapter(Set<Map.Entry<K, RealValue>> realSet) { - this.realSet = realSet; - } - - @Override - public Iterator<java.util.Map.Entry<K, V>> iterator() { - return new IteratorAdapter(realSet.iterator()); - } - - @Override - public int size() { - return realSet.size(); - } - } - - private class IteratorAdapter implements Iterator<Map.Entry<K, V>> { - private final Iterator<Map.Entry<K, RealValue>> realIterator; - - public IteratorAdapter( - Iterator<Map.Entry<K, RealValue>> realIterator) { - this.realIterator = realIterator; - } - - @Override - public boolean hasNext() { - return realIterator.hasNext(); - } - - @Override - public java.util.Map.Entry<K, V> next() { - return new EntryAdapter(realIterator.next()); - } - - @Override - public void remove() { - realIterator.remove(); - } - } - - private class EntryAdapter implements Map.Entry<K, V> { - private final Map.Entry<K, RealValue> realEntry; - - public EntryAdapter(Map.Entry<K, RealValue> realEntry) { - this.realEntry = realEntry; - } - - @Override - public K getKey() { - return realEntry.getKey(); - } - - @Override - public V getValue() { - return valueConverter.doForward(realEntry.getValue()); - } - - @Override - public V setValue(V value) { - RealValue oldValue = realEntry.setValue( - valueConverter.doBackward(value)); - if (oldValue == null) { - return null; - } - return valueConverter.doForward(oldValue); - } - } - } - - /** - * Extends {@link List} to add the capability to make the list immutable and inspect if it is - * modifiable. - * <p> - * All implementations must support efficient random access. - */ - public static interface ProtobufList<E> extends List<E>, RandomAccess { - - /** - * Makes this list immutable. All subsequent modifications will throw an - * {@link UnsupportedOperationException}. - */ - void makeImmutable(); - - /** - * Returns whether this list can be modified via the publicly accessible {@link List} methods. - */ - boolean isModifiable(); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - ProtobufList<E> mutableCopyWithCapacity(int capacity); - } - - /** - * A {@link java.util.List} implementation that avoids boxing the elements into Integers if - * possible. Does not support null elements. - */ - public static interface IntList extends ProtobufList<Integer> { - - /** - * Like {@link #get(int)} but more efficient in that it doesn't box the returned value. - */ - int getInt(int index); - - /** - * Like {@link #add(Object)} but more efficient in that it doesn't box the element. - */ - void addInt(int element); - - /** - * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element. - */ - int setInt(int index, int element); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - @Override - IntList mutableCopyWithCapacity(int capacity); - } - - /** - * A {@link java.util.List} implementation that avoids boxing the elements into Booleans if - * possible. Does not support null elements. - */ - public static interface BooleanList extends ProtobufList<Boolean> { - - /** - * Like {@link #get(int)} but more efficient in that it doesn't box the returned value. - */ - boolean getBoolean(int index); - - /** - * Like {@link #add(Object)} but more efficient in that it doesn't box the element. - */ - void addBoolean(boolean element); - - /** - * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element. - */ - boolean setBoolean(int index, boolean element); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - @Override - BooleanList mutableCopyWithCapacity(int capacity); - } - - /** - * A {@link java.util.List} implementation that avoids boxing the elements into Longs if - * possible. Does not support null elements. - */ - public static interface LongList extends ProtobufList<Long> { - - /** - * Like {@link #get(int)} but more efficient in that it doesn't box the returned value. - */ - long getLong(int index); - - /** - * Like {@link #add(Object)} but more efficient in that it doesn't box the element. - */ - void addLong(long element); - - /** - * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element. - */ - long setLong(int index, long element); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - @Override - LongList mutableCopyWithCapacity(int capacity); - } - - /** - * A {@link java.util.List} implementation that avoids boxing the elements into Doubles if - * possible. Does not support null elements. - */ - public static interface DoubleList extends ProtobufList<Double> { - - /** - * Like {@link #get(int)} but more efficient in that it doesn't box the returned value. - */ - double getDouble(int index); - - /** - * Like {@link #add(Object)} but more efficient in that it doesn't box the element. - */ - void addDouble(double element); - - /** - * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element. - */ - double setDouble(int index, double element); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - @Override - DoubleList mutableCopyWithCapacity(int capacity); - } - - /** - * A {@link java.util.List} implementation that avoids boxing the elements into Floats if - * possible. Does not support null elements. - */ - public static interface FloatList extends ProtobufList<Float> { - - /** - * Like {@link #get(int)} but more efficient in that it doesn't box the returned value. - */ - float getFloat(int index); - - /** - * Like {@link #add(Object)} but more efficient in that it doesn't box the element. - */ - void addFloat(float element); - - /** - * Like {@link #set(int, Object)} but more efficient in that it doesn't box the element. - */ - float setFloat(int index, float element); - - /** - * Returns a mutable clone of this list with the specified capacity. - */ - @Override - FloatList mutableCopyWithCapacity(int capacity); - } -} |