diff options
Diffstat (limited to 'java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java')
| -rw-r--r-- | java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java | 301 |
1 files changed, 241 insertions, 60 deletions
diff --git a/java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java b/java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java index 81e1862c..12a1472d 100644 --- a/java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java +++ b/java/core/src/main/java/com/google/protobuf/GeneratedMessageLite.java @@ -30,6 +30,7 @@ package com.google.protobuf; +import com.google.protobuf.AbstractMessageLite.Builder.LimitedInputStream; import com.google.protobuf.Internal.BooleanList; import com.google.protobuf.Internal.DoubleList; import com.google.protobuf.Internal.FloatList; @@ -39,6 +40,7 @@ import com.google.protobuf.Internal.ProtobufList; import com.google.protobuf.WireFormat.FieldType; import java.io.IOException; +import java.io.InputStream; import java.io.ObjectStreamException; import java.io.Serializable; import java.lang.reflect.InvocationTargetException; @@ -57,10 +59,7 @@ import java.util.Map; public abstract class GeneratedMessageLite< MessageType extends GeneratedMessageLite<MessageType, BuilderType>, BuilderType extends GeneratedMessageLite.Builder<MessageType, BuilderType>> - extends AbstractMessageLite - implements Serializable { - - private static final long serialVersionUID = 1L; + extends AbstractMessageLite { /** For use by generated code only. Lazily initialized to reduce allocations. */ protected UnknownFieldSetLite unknownFields = null; @@ -83,6 +82,24 @@ public abstract class GeneratedMessageLite< return (BuilderType) dynamicMethod(MethodToInvoke.NEW_BUILDER); } + /** + * A reflective toString function. This is primarily intended as a developer aid, while keeping + * binary size down. The first line of the {@code toString()} representation includes a commented + * version of {@code super.toString()} to act as an indicator that this should not be relied on + * for comparisons. + * <p> + * NOTE: This method relies on the field getter methods not being stripped or renamed by proguard. + * If they are, the fields will not be included in the returned string representation. + * <p> + * NOTE: This implementation is liable to change in the future, and should not be relied on in + * code. + */ + @Override + public String toString() { + return MessageLiteToString.toString(this, super.toString()); + } + + // The general strategy for unknown fields is to use an UnknownFieldSetLite that is treated as // mutable during the parsing constructor and immutable after. This allows us to avoid // any unnecessary intermediary allocations while reducing the generated code size. @@ -303,10 +320,9 @@ public abstract class GeneratedMessageLite< throws java.io.IOException { MessageType parsedMessage = null; try { - parsedMessage = - (MessageType) getDefaultInstanceForType().getParserForType().parsePartialFrom( - input, extensionRegistry); - } catch (com.google.protobuf.InvalidProtocolBufferException e) { + parsedMessage = parsePartialFrom( + (MessageType) getDefaultInstanceForType(), input, extensionRegistry); + } catch (InvalidProtocolBufferException e) { parsedMessage = (MessageType) e.getUnfinishedMessage(); throw e; } finally { @@ -562,7 +578,6 @@ public abstract class GeneratedMessageLite< return extensions.isInitialized(); } - @Override protected final void doneParsing() { super.doneParsing(); @@ -1049,7 +1064,12 @@ public abstract class GeneratedMessageLite< * A serialized (serializable) form of the generated message. Stores the * message as a class name and a byte array. */ - static final class SerializedForm implements Serializable { + protected static final class SerializedForm implements Serializable { + + public static SerializedForm of(MessageLite message) { + return new SerializedForm(message); + } + private static final long serialVersionUID = 0L; private final String messageClassName; @@ -1093,16 +1113,6 @@ public abstract class GeneratedMessageLite< } } } - - /** - * Replaces this object in the output stream with a serialized form. - * Part of Java's serialization magic. Generated sub-classes must override - * this method by calling {@code return super.writeReplace();} - * @return a SerializedForm of this message - */ - protected Object writeReplace() throws ObjectStreamException { - return new SerializedForm(this); - } /** * Checks that the {@link Extension} is Lite and returns it as a @@ -1135,45 +1145,6 @@ public abstract class GeneratedMessageLite< message.dynamicMethod(MethodToInvoke.MAKE_IMMUTABLE); } - /** - * A static helper method for parsing a partial from input using the extension registry and the - * instance. - */ - static <T extends GeneratedMessageLite<T, ?>> T parsePartialFrom( - T instance, CodedInputStream input, ExtensionRegistryLite extensionRegistry) - throws InvalidProtocolBufferException { - try { - return (T) instance.dynamicMethod( - MethodToInvoke.PARSE_PARTIAL_FROM, input, extensionRegistry); - } catch (RuntimeException e) { - if (e.getCause() instanceof InvalidProtocolBufferException) { - throw (InvalidProtocolBufferException) e.getCause(); - } - throw e; - } - } - - /** - * A {@link Parser} implementation that delegates to the default instance. - * <p> - * For use by generated code only. - */ - protected static class DefaultInstanceBasedParser<T extends GeneratedMessageLite<T, ?>> - extends AbstractParser<T> { - - private T defaultInstance; - - public DefaultInstanceBasedParser(T defaultInstance) { - this.defaultInstance = defaultInstance; - } - - @Override - public T parsePartialFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry) - throws InvalidProtocolBufferException { - return GeneratedMessageLite.parsePartialFrom(defaultInstance, input, extensionRegistry); - } - } - protected static IntList newIntList() { return new IntArrayList(); } @@ -1269,8 +1240,218 @@ public abstract class GeneratedMessageLite< protected static <E> ProtobufList<E> emptyProtobufList() { return ProtobufArrayList.emptyList(); } - + protected static LazyStringArrayList emptyLazyStringArrayList() { return LazyStringArrayList.emptyList(); } + + /** + * A {@link Parser} implementation that delegates to the default instance. + * <p> + * For use by generated code only. + */ + protected static class DefaultInstanceBasedParser<T extends GeneratedMessageLite<T, ?>> + extends AbstractParser<T> { + + private T defaultInstance; + + public DefaultInstanceBasedParser(T defaultInstance) { + this.defaultInstance = defaultInstance; + } + + @Override + public T parsePartialFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return GeneratedMessageLite.parsePartialFrom(defaultInstance, input, extensionRegistry); + } + } + + /** + * A static helper method for parsing a partial from input using the extension registry and the + * instance. + */ + // TODO(dweis): Should this verify that the last tag was 0? + static <T extends GeneratedMessageLite<T, ?>> T parsePartialFrom( + T instance, CodedInputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + T result; + try { + result = (T) instance.dynamicMethod( + MethodToInvoke.PARSE_PARTIAL_FROM, input, extensionRegistry); + } catch (RuntimeException e) { + if (e.getCause() instanceof InvalidProtocolBufferException) { + throw (InvalidProtocolBufferException) e.getCause(); + } + throw e; + } + return result; + } + + protected static <T extends GeneratedMessageLite<T, ?>> T parsePartialFrom( + T defaultInstance, + CodedInputStream input) + throws InvalidProtocolBufferException { + return parsePartialFrom(defaultInstance, input, ExtensionRegistryLite.getEmptyRegistry()); + } + + /** + * Helper method to check if message is initialized. + * + * @throws InvalidProtocolBufferException if it is not initialized. + * @return The message to check. + */ + private static <T extends GeneratedMessageLite<T, ?>> T checkMessageInitialized(T message) + throws InvalidProtocolBufferException { + if (message != null && !message.isInitialized()) { + throw message.newUninitializedMessageException() + .asInvalidProtocolBufferException() + .setUnfinishedMessage(message); + } + return message; + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, ByteString data) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parseFrom(defaultInstance, data, ExtensionRegistryLite.getEmptyRegistry())); + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, ByteString data, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return checkMessageInitialized(parsePartialFrom(defaultInstance, data, extensionRegistry)); + } + + // This is a special case since we want to verify that the last tag is 0. We assume we exhaust the + // ByteString. + private static <T extends GeneratedMessageLite<T, ?>> T parsePartialFrom( + T defaultInstance, ByteString data, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + T message; + try { + CodedInputStream input = data.newCodedInput(); + message = parsePartialFrom(defaultInstance, input, extensionRegistry); + try { + input.checkLastTagWas(0); + } catch (InvalidProtocolBufferException e) { + throw e.setUnfinishedMessage(message); + } + return message; + } catch (InvalidProtocolBufferException e) { + throw e; + } + } + + // This is a special case since we want to verify that the last tag is 0. We assume we exhaust the + // ByteString. + private static <T extends GeneratedMessageLite<T, ?>> T parsePartialFrom( + T defaultInstance, byte[] data, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + T message; + try { + CodedInputStream input = CodedInputStream.newInstance(data); + message = parsePartialFrom(defaultInstance, input, extensionRegistry); + try { + input.checkLastTagWas(0); + } catch (InvalidProtocolBufferException e) { + throw e.setUnfinishedMessage(message); + } + return message; + } catch (InvalidProtocolBufferException e) { + throw e; + } + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, byte[] data) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialFrom(defaultInstance, data, ExtensionRegistryLite.getEmptyRegistry())); + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, byte[] data, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return checkMessageInitialized(parsePartialFrom(defaultInstance, data, extensionRegistry)); + } + + // Does not validate last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, InputStream input) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialFrom(defaultInstance, CodedInputStream.newInstance(input), + ExtensionRegistryLite.getEmptyRegistry())); + } + + // Does not validate last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, InputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialFrom(defaultInstance, CodedInputStream.newInstance(input), extensionRegistry)); + } + + // Does not validate last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, CodedInputStream input) + throws InvalidProtocolBufferException { + return parseFrom(defaultInstance, input, ExtensionRegistryLite.getEmptyRegistry()); + } + + // Does not validate last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseFrom( + T defaultInstance, CodedInputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialFrom(defaultInstance, input, extensionRegistry)); + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseDelimitedFrom( + T defaultInstance, InputStream input) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialDelimitedFrom(defaultInstance, input, + ExtensionRegistryLite.getEmptyRegistry())); + } + + // Validates last tag. + protected static <T extends GeneratedMessageLite<T, ?>> T parseDelimitedFrom( + T defaultInstance, InputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return checkMessageInitialized( + parsePartialDelimitedFrom(defaultInstance, input, extensionRegistry)); + } + + private static <T extends GeneratedMessageLite<T, ?>> T parsePartialDelimitedFrom( + T defaultInstance, + InputStream input, + ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + int size; + try { + int firstByte = input.read(); + if (firstByte == -1) { + return null; + } + size = CodedInputStream.readRawVarint32(firstByte, input); + } catch (IOException e) { + throw new InvalidProtocolBufferException(e.getMessage()); + } + InputStream limitedInput = new LimitedInputStream(input, size); + CodedInputStream codedInput = CodedInputStream.newInstance(limitedInput); + T message = parsePartialFrom(defaultInstance, codedInput, extensionRegistry); + try { + codedInput.checkLastTagWas(0); + } catch (InvalidProtocolBufferException e) { + throw e.setUnfinishedMessage(message); + } + return message; + } } |