diff options
Diffstat (limited to 'third_party/protobuf/csharp/src/Google.Protobuf/Reflection/CustomOptions.cs')
| -rw-r--r-- | third_party/protobuf/csharp/src/Google.Protobuf/Reflection/CustomOptions.cs | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/CustomOptions.cs b/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/CustomOptions.cs deleted file mode 100644 index 88b3ec000d..0000000000 --- a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/CustomOptions.cs +++ /dev/null @@ -1,390 +0,0 @@ -#region Copyright notice and license -// Protocol Buffers - Google's data interchange format -// Copyright 2017 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. -#endregion - -using System; -using System.Collections.Generic; - -namespace Google.Protobuf.Reflection -{ - /// <summary> - /// Container for a set of custom options specified within a message, field etc. - /// </summary> - /// <remarks> - /// <para> - /// This type is publicly immutable, but internally mutable. It is only populated - /// by the descriptor parsing code - by the time any user code is able to see an instance, - /// it will be fully initialized. - /// </para> - /// <para> - /// If an option is requested using the incorrect method, an answer may still be returned: all - /// of the numeric types are represented internally using 64-bit integers, for example. It is up to - /// the caller to ensure that they make the appropriate method call for the option they're interested in. - /// Note that enum options are simply stored as integers, so the value should be fetched using - /// <see cref="TryGetInt32(int, out int)"/> and then cast appropriately. - /// </para> - /// <para> - /// Repeated options are currently not supported. Asking for a single value of an option - /// which was actually repeated will return the last value, except for message types where - /// all the set values are merged together. - /// </para> - /// </remarks> - public sealed class CustomOptions - { - /// <summary> - /// Singleton for all descriptors with an empty set of options. - /// </summary> - internal static readonly CustomOptions Empty = new CustomOptions(); - - /// <summary> - /// A sequence of values per field. This needs to be per field rather than per tag to allow correct deserialization - /// of repeated fields which could be "int, ByteString, int" - unlikely as that is. The fact that values are boxed - /// is unfortunate; we might be able to use a struct instead, and we could combine uint and ulong values. - /// </summary> - private readonly Dictionary<int, List<FieldValue>> valuesByField = new Dictionary<int, List<FieldValue>>(); - - private CustomOptions() { } - - /// <summary> - /// Retrieves a Boolean value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetBool(int field, out bool value) - { - ulong? tmp = GetLastNumericValue(field); - value = tmp == 1UL; - return tmp != null; - } - - /// <summary> - /// Retrieves a signed 32-bit integer value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetInt32(int field, out int value) - { - ulong? tmp = GetLastNumericValue(field); - value = (int) tmp.GetValueOrDefault(); - return tmp != null; - } - - /// <summary> - /// Retrieves a signed 64-bit integer value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetInt64(int field, out long value) - { - ulong? tmp = GetLastNumericValue(field); - value = (long) tmp.GetValueOrDefault(); - return tmp != null; - } - - /// <summary> - /// Retrieves an unsigned 32-bit integer value for the specified option field, - /// assuming a fixed-length representation. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetFixed32(int field, out uint value) => TryGetUInt32(field, out value); - - /// <summary> - /// Retrieves an unsigned 64-bit integer value for the specified option field, - /// assuming a fixed-length representation. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetFixed64(int field, out ulong value) => TryGetUInt64(field, out value); - - /// <summary> - /// Retrieves a signed 32-bit integer value for the specified option field, - /// assuming a fixed-length representation. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetSFixed32(int field, out int value) => TryGetInt32(field, out value); - - /// <summary> - /// Retrieves a signed 64-bit integer value for the specified option field, - /// assuming a fixed-length representation. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetSFixed64(int field, out long value) => TryGetInt64(field, out value); - - /// <summary> - /// Retrieves a signed 32-bit integer value for the specified option field, - /// assuming a zigzag encoding. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetSInt32(int field, out int value) - { - ulong? tmp = GetLastNumericValue(field); - value = CodedInputStream.DecodeZigZag32((uint) tmp.GetValueOrDefault()); - return tmp != null; - } - - /// <summary> - /// Retrieves a signed 64-bit integer value for the specified option field, - /// assuming a zigzag encoding. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetSInt64(int field, out long value) - { - ulong? tmp = GetLastNumericValue(field); - value = CodedInputStream.DecodeZigZag64(tmp.GetValueOrDefault()); - return tmp != null; - } - - /// <summary> - /// Retrieves an unsigned 32-bit integer value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetUInt32(int field, out uint value) - { - ulong? tmp = GetLastNumericValue(field); - value = (uint) tmp.GetValueOrDefault(); - return tmp != null; - } - - /// <summary> - /// Retrieves an unsigned 64-bit integer value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetUInt64(int field, out ulong value) - { - ulong? tmp = GetLastNumericValue(field); - value = tmp.GetValueOrDefault(); - return tmp != null; - } - - /// <summary> - /// Retrieves a 32-bit floating point value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetFloat(int field, out float value) - { - ulong? tmp = GetLastNumericValue(field); - int int32 = (int) tmp.GetValueOrDefault(); - byte[] bytes = BitConverter.GetBytes(int32); - value = BitConverter.ToSingle(bytes, 0); - return tmp != null; - } - - /// <summary> - /// Retrieves a 64-bit floating point value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetDouble(int field, out double value) - { - ulong? tmp = GetLastNumericValue(field); - value = BitConverter.Int64BitsToDouble((long) tmp.GetValueOrDefault()); - return tmp != null; - } - - /// <summary> - /// Retrieves a string value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetString(int field, out string value) - { - ByteString bytes = GetLastByteStringValue(field); - value = bytes?.ToStringUtf8(); - return bytes != null; - } - - /// <summary> - /// Retrieves a bytes value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetBytes(int field, out ByteString value) - { - ByteString bytes = GetLastByteStringValue(field); - value = bytes; - return bytes != null; - } - - /// <summary> - /// Retrieves a message value for the specified option field. - /// </summary> - /// <param name="field">The field to fetch the value for.</param> - /// <param name="value">The output variable to populate.</param> - /// <returns><c>true</c> if a suitable value for the field was found; <c>false</c> otherwise.</returns> - public bool TryGetMessage<T>(int field, out T value) where T : class, IMessage, new() - { - value = null; - List<FieldValue> values; - if (!valuesByField.TryGetValue(field, out values)) - { - return false; - } - foreach (FieldValue fieldValue in values) - { - if (fieldValue.ByteString != null) - { - if (value == null) - { - value = new T(); - } - value.MergeFrom(fieldValue.ByteString); - } - } - return value != null; - } - - private ulong? GetLastNumericValue(int field) - { - List<FieldValue> values; - if (!valuesByField.TryGetValue(field, out values)) - { - return null; - } - for (int i = values.Count - 1; i >= 0; i--) - { - // A non-bytestring value is a numeric value - if (values[i].ByteString == null) - { - return values[i].Number; - } - } - return null; - } - - private ByteString GetLastByteStringValue(int field) - { - List<FieldValue> values; - if (!valuesByField.TryGetValue(field, out values)) - { - return null; - } - for (int i = values.Count - 1; i >= 0; i--) - { - if (values[i].ByteString != null) - { - return values[i].ByteString; - } - } - return null; - } - - /// <summary> - /// Reads an unknown field, either parsing it and storing it or skipping it. - /// </summary> - /// <remarks> - /// If the current set of options is empty and we manage to read a field, a new set of options - /// will be created and returned. Otherwise, the return value is <c>this</c>. This allows - /// us to start with a singleton empty set of options and just create new ones where necessary. - /// </remarks> - /// <param name="input">Input stream to read from. </param> - /// <returns>The resulting set of custom options, either <c>this</c> or a new set.</returns> - internal CustomOptions ReadOrSkipUnknownField(CodedInputStream input) - { - var tag = input.LastTag; - var field = WireFormat.GetTagFieldNumber(tag); - switch (WireFormat.GetTagWireType(tag)) - { - case WireFormat.WireType.LengthDelimited: - return AddValue(field, new FieldValue(input.ReadBytes())); - case WireFormat.WireType.Fixed32: - return AddValue(field, new FieldValue(input.ReadFixed32())); - case WireFormat.WireType.Fixed64: - return AddValue(field, new FieldValue(input.ReadFixed64())); - case WireFormat.WireType.Varint: - return AddValue(field, new FieldValue(input.ReadRawVarint64())); - // For StartGroup, EndGroup or any wire format we don't understand, - // just use the normal behavior (call SkipLastField). - default: - input.SkipLastField(); - return this; - } - } - - private CustomOptions AddValue(int field, FieldValue value) - { - var ret = valuesByField.Count == 0 ? new CustomOptions() : this; - List<FieldValue> valuesForField; - if (!ret.valuesByField.TryGetValue(field, out valuesForField)) - { - // Expect almost all - valuesForField = new List<FieldValue>(1); - ret.valuesByField[field] = valuesForField; - } - valuesForField.Add(value); - return ret; - } - - /// <summary> - /// All field values can be stored as a byte string or a 64-bit integer. - /// This struct avoids unnecessary boxing. - /// </summary> - private struct FieldValue - { - internal ulong Number { get; } - internal ByteString ByteString { get; } - - internal FieldValue(ulong number) - { - Number = number; - ByteString = null; - } - - internal FieldValue(ByteString byteString) - { - Number = 0; - ByteString = byteString; - } - } - } -} |