Index: third_party/protobuf/java/src/main/java/com/google/protobuf/WireFormat.java |
diff --git a/third_party/protobuf/java/src/main/java/com/google/protobuf/WireFormat.java b/third_party/protobuf/java/src/main/java/com/google/protobuf/WireFormat.java |
new file mode 100644 |
index 0000000000000000000000000000000000000000..8dbe1ae33c76249f63faca962e05e3956ca213e8 |
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+++ b/third_party/protobuf/java/src/main/java/com/google/protobuf/WireFormat.java |
@@ -0,0 +1,245 @@ |
+// 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; |
+ |
+/** |
+ * This class is used internally by the Protocol Buffer library and generated |
+ * message implementations. It is public only because those generated messages |
+ * do not reside in the {@code protobuf} package. Others should not use this |
+ * class directly. |
+ * |
+ * This class contains constants and helper functions useful for dealing with |
+ * the Protocol Buffer wire format. |
+ * |
+ * @author kenton@google.com Kenton Varda |
+ */ |
+public final class WireFormat { |
+ // Do not allow instantiation. |
+ private WireFormat() {} |
+ |
+ public static final int WIRETYPE_VARINT = 0; |
+ public static final int WIRETYPE_FIXED64 = 1; |
+ public static final int WIRETYPE_LENGTH_DELIMITED = 2; |
+ public static final int WIRETYPE_START_GROUP = 3; |
+ public static final int WIRETYPE_END_GROUP = 4; |
+ public static final int WIRETYPE_FIXED32 = 5; |
+ |
+ static final int TAG_TYPE_BITS = 3; |
+ static final int TAG_TYPE_MASK = (1 << TAG_TYPE_BITS) - 1; |
+ |
+ /** Given a tag value, determines the wire type (the lower 3 bits). */ |
+ public static int getTagWireType(final int tag) { |
+ return tag & TAG_TYPE_MASK; |
+ } |
+ |
+ /** Given a tag value, determines the field number (the upper 29 bits). */ |
+ public static int getTagFieldNumber(final int tag) { |
+ return tag >>> TAG_TYPE_BITS; |
+ } |
+ |
+ /** Makes a tag value given a field number and wire type. */ |
+ static int makeTag(final int fieldNumber, final int wireType) { |
+ return (fieldNumber << TAG_TYPE_BITS) | wireType; |
+ } |
+ |
+ /** |
+ * Lite equivalent to {@link Descriptors.FieldDescriptor.JavaType}. This is |
+ * only here to support the lite runtime and should not be used by users. |
+ */ |
+ public enum JavaType { |
+ INT(0), |
+ LONG(0L), |
+ FLOAT(0F), |
+ DOUBLE(0D), |
+ BOOLEAN(false), |
+ STRING(""), |
+ BYTE_STRING(ByteString.EMPTY), |
+ ENUM(null), |
+ MESSAGE(null); |
+ |
+ JavaType(final Object defaultDefault) { |
+ this.defaultDefault = defaultDefault; |
+ } |
+ |
+ /** |
+ * The default default value for fields of this type, if it's a primitive |
+ * type. |
+ */ |
+ Object getDefaultDefault() { |
+ return defaultDefault; |
+ } |
+ |
+ private final Object defaultDefault; |
+ } |
+ |
+ /** |
+ * Lite equivalent to {@link Descriptors.FieldDescriptor.Type}. This is |
+ * only here to support the lite runtime and should not be used by users. |
+ */ |
+ public enum FieldType { |
+ DOUBLE (JavaType.DOUBLE , WIRETYPE_FIXED64 ), |
+ FLOAT (JavaType.FLOAT , WIRETYPE_FIXED32 ), |
+ INT64 (JavaType.LONG , WIRETYPE_VARINT ), |
+ UINT64 (JavaType.LONG , WIRETYPE_VARINT ), |
+ INT32 (JavaType.INT , WIRETYPE_VARINT ), |
+ FIXED64 (JavaType.LONG , WIRETYPE_FIXED64 ), |
+ FIXED32 (JavaType.INT , WIRETYPE_FIXED32 ), |
+ BOOL (JavaType.BOOLEAN , WIRETYPE_VARINT ), |
+ STRING (JavaType.STRING , WIRETYPE_LENGTH_DELIMITED) { |
+ public boolean isPackable() { return false; } |
+ }, |
+ GROUP (JavaType.MESSAGE , WIRETYPE_START_GROUP ) { |
+ public boolean isPackable() { return false; } |
+ }, |
+ MESSAGE (JavaType.MESSAGE , WIRETYPE_LENGTH_DELIMITED) { |
+ public boolean isPackable() { return false; } |
+ }, |
+ BYTES (JavaType.BYTE_STRING, WIRETYPE_LENGTH_DELIMITED) { |
+ public boolean isPackable() { return false; } |
+ }, |
+ UINT32 (JavaType.INT , WIRETYPE_VARINT ), |
+ ENUM (JavaType.ENUM , WIRETYPE_VARINT ), |
+ SFIXED32(JavaType.INT , WIRETYPE_FIXED32 ), |
+ SFIXED64(JavaType.LONG , WIRETYPE_FIXED64 ), |
+ SINT32 (JavaType.INT , WIRETYPE_VARINT ), |
+ SINT64 (JavaType.LONG , WIRETYPE_VARINT ); |
+ |
+ FieldType(final JavaType javaType, final int wireType) { |
+ this.javaType = javaType; |
+ this.wireType = wireType; |
+ } |
+ |
+ private final JavaType javaType; |
+ private final int wireType; |
+ |
+ public JavaType getJavaType() { return javaType; } |
+ public int getWireType() { return wireType; } |
+ |
+ public boolean isPackable() { return true; } |
+ } |
+ |
+ // Field numbers for fields in MessageSet wire format. |
+ static final int MESSAGE_SET_ITEM = 1; |
+ static final int MESSAGE_SET_TYPE_ID = 2; |
+ static final int MESSAGE_SET_MESSAGE = 3; |
+ |
+ // Tag numbers. |
+ static final int MESSAGE_SET_ITEM_TAG = |
+ makeTag(MESSAGE_SET_ITEM, WIRETYPE_START_GROUP); |
+ static final int MESSAGE_SET_ITEM_END_TAG = |
+ makeTag(MESSAGE_SET_ITEM, WIRETYPE_END_GROUP); |
+ static final int MESSAGE_SET_TYPE_ID_TAG = |
+ makeTag(MESSAGE_SET_TYPE_ID, WIRETYPE_VARINT); |
+ static final int MESSAGE_SET_MESSAGE_TAG = |
+ makeTag(MESSAGE_SET_MESSAGE, WIRETYPE_LENGTH_DELIMITED); |
+ |
+ /** |
+ * Validation level for handling incoming string field data which potentially |
+ * contain non-UTF8 bytes. |
+ */ |
+ enum Utf8Validation { |
+ /** Eagerly parses to String; silently accepts invalid UTF8 bytes. */ |
+ LOOSE { |
+ Object readString(CodedInputStream input) throws IOException { |
+ return input.readString(); |
+ } |
+ }, |
+ /** Eagerly parses to String; throws an IOException on invalid bytes. */ |
+ STRICT { |
+ Object readString(CodedInputStream input) throws IOException { |
+ return input.readStringRequireUtf8(); |
+ } |
+ }, |
+ /** Keep data as ByteString; validation/conversion to String is lazy. */ |
+ LAZY { |
+ Object readString(CodedInputStream input) throws IOException { |
+ return input.readBytes(); |
+ } |
+ }; |
+ |
+ /** Read a string field from the input with the proper UTF8 validation. */ |
+ abstract Object readString(CodedInputStream input) throws IOException; |
+ } |
+ |
+ /** |
+ * Read a field of any primitive type for immutable messages from a |
+ * CodedInputStream. Enums, groups, and embedded messages are not handled by |
+ * this method. |
+ * |
+ * @param input The stream from which to read. |
+ * @param type Declared type of the field. |
+ * @param utf8Validation Different string UTF8 validation level for handling |
+ * string fields. |
+ * @return An object representing the field's value, of the exact |
+ * type which would be returned by |
+ * {@link Message#getField(Descriptors.FieldDescriptor)} for |
+ * this field. |
+ */ |
+ static Object readPrimitiveField( |
+ CodedInputStream input, |
+ FieldType type, |
+ Utf8Validation utf8Validation) throws IOException { |
+ switch (type) { |
+ case DOUBLE : return input.readDouble (); |
+ case FLOAT : return input.readFloat (); |
+ case INT64 : return input.readInt64 (); |
+ case UINT64 : return input.readUInt64 (); |
+ case INT32 : return input.readInt32 (); |
+ case FIXED64 : return input.readFixed64 (); |
+ case FIXED32 : return input.readFixed32 (); |
+ case BOOL : return input.readBool (); |
+ case BYTES : return input.readBytes (); |
+ case UINT32 : return input.readUInt32 (); |
+ case SFIXED32: return input.readSFixed32(); |
+ case SFIXED64: return input.readSFixed64(); |
+ case SINT32 : return input.readSInt32 (); |
+ case SINT64 : return input.readSInt64 (); |
+ |
+ case STRING : return utf8Validation.readString(input); |
+ case GROUP: |
+ throw new IllegalArgumentException( |
+ "readPrimitiveField() cannot handle nested groups."); |
+ case MESSAGE: |
+ throw new IllegalArgumentException( |
+ "readPrimitiveField() cannot handle embedded messages."); |
+ case ENUM: |
+ // We don't handle enums because we don't know what to do if the |
+ // value is not recognized. |
+ throw new IllegalArgumentException( |
+ "readPrimitiveField() cannot handle enums."); |
+ } |
+ |
+ throw new RuntimeException( |
+ "There is no way to get here, but the compiler thinks otherwise."); |
+ } |
+} |