#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// 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.Globalization;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers.ProtoGen {
internal abstract class FieldGeneratorBase : SourceGeneratorBase<FieldDescriptor> {
protected FieldGeneratorBase(FieldDescriptor descriptor)
: base(descriptor) {
}
private static bool AllPrintableAscii(string text) {
foreach (char c in text) {
if (c < 0x20 || c > 0x7e) {
return false;
}
}
return true;
}
protected string DefaultValue {
get {
string suffix = "";
switch (Descriptor.FieldType) {
case FieldType.Float: suffix = "F"; break;
case FieldType.Double: suffix = "D"; break;
case FieldType.Int64: suffix = "L"; break;
case FieldType.UInt64: suffix = "UL"; break;
}
switch (Descriptor.FieldType) {
case FieldType.Float:
case FieldType.Double:
case FieldType.Int32:
case FieldType.Int64:
case FieldType.SInt32:
case FieldType.SInt64:
case FieldType.SFixed32:
case FieldType.SFixed64:
case FieldType.UInt32:
case FieldType.UInt64:
case FieldType.Fixed32:
case FieldType.Fixed64:
// The simple Object.ToString converts using the current culture.
// We want to always use the invariant culture so it's predictable.
IConvertible value = (IConvertible) Descriptor.DefaultValue;
return value.ToString(CultureInfo.InvariantCulture) + suffix;
case FieldType.Bool:
return (bool) Descriptor.DefaultValue ? "true" : "false";
case FieldType.Bytes:
if (!Descriptor.HasDefaultValue) {
return "pb::ByteString.Empty";
}
return string.Format("(pb::ByteString) {0}.Descriptor.Fields[{1}].DefaultValue", GetClassName(Descriptor.ContainingType), Descriptor.Index);
case FieldType.String:
if (AllPrintableAscii(Descriptor.Proto.DefaultValue)) {
// All chars are ASCII and printable. In this case we only
// need to escape quotes and backslashes.
return "\"" + Descriptor.Proto.DefaultValue
.Replace("\\", "\\\\")
.Replace("'", "\\'")
.Replace("\"", "\\\"")
+ "\"";
}
return string.Format("(string) {0}.Descriptor.Fields[{1}].DefaultValue", GetClassName(Descriptor.ContainingType), Descriptor.Index);
case FieldType.Enum:
return TypeName + "." + ((EnumValueDescriptor) Descriptor.DefaultValue).Name;
case FieldType.Message:
case FieldType.Group:
return TypeName + ".DefaultInstance";
default:
throw new InvalidOperationException("Invalid field descriptor type");
}
}
}
protected string PropertyName {
get {
return Descriptor.CSharpOptions.PropertyName;
}
}
protected string Name {
get { return NameHelpers.UnderscoresToCamelCase(GetFieldName(Descriptor)); }
}
protected int Number {
get { return Descriptor.FieldNumber; }
}
protected void AddNullCheck(TextGenerator writer) {
AddNullCheck(writer, "value");
}
protected void AddNullCheck(TextGenerator writer, string name) {
if (IsNullableType) {
writer.WriteLine(" pb::ThrowHelper.ThrowIfNull({0}, \"{0}\");", name);
}
}
protected void AddClsComplianceCheck(TextGenerator writer) {
if (!Descriptor.IsCLSCompliant && Descriptor.File.CSharpOptions.ClsCompliance) {
writer.WriteLine("[global::System.CLSCompliant(false)]");
}
}
/// <summary>
/// For encodings with fixed sizes, returns that size in bytes. Otherwise
/// returns -1. TODO(jonskeet): Make this less ugly.
/// </summary>
protected int FixedSize {
get {
switch (Descriptor.FieldType) {
case FieldType.UInt32:
case FieldType.UInt64:
case FieldType.Int32:
case FieldType.Int64:
case FieldType.SInt32:
case FieldType.SInt64:
case FieldType.Enum:
case FieldType.Bytes:
case FieldType.String:
case FieldType.Message:
case FieldType.Group:
return -1;
case FieldType.Float:
return WireFormat.FloatSize;
case FieldType.SFixed32:
return WireFormat.SFixed32Size;
case FieldType.Fixed32:
return WireFormat.Fixed32Size;
case FieldType.Double:
return WireFormat.DoubleSize;
case FieldType.SFixed64:
return WireFormat.SFixed64Size;
case FieldType.Fixed64:
return WireFormat.Fixed64Size;
case FieldType.Bool:
return WireFormat.BoolSize;
default:
throw new InvalidOperationException("Invalid field descriptor type");
}
}
}
protected bool IsNullableType {
get {
switch (Descriptor.FieldType) {
case FieldType.Float:
case FieldType.Double:
case FieldType.Int32:
case FieldType.Int64:
case FieldType.SInt32:
case FieldType.SInt64:
case FieldType.SFixed32:
case FieldType.SFixed64:
case FieldType.UInt32:
case FieldType.UInt64:
case FieldType.Fixed32:
case FieldType.Fixed64:
case FieldType.Bool:
case FieldType.Enum:
return false;
case FieldType.Bytes:
case FieldType.String:
case FieldType.Message:
case FieldType.Group:
return true;
default:
throw new InvalidOperationException("Invalid field descriptor type");
}
}
}
protected string TypeName {
get {
switch (Descriptor.FieldType) {
case FieldType.Enum:
return GetClassName(Descriptor.EnumType);
case FieldType.Message:
case FieldType.Group:
return GetClassName(Descriptor.MessageType);
default:
return DescriptorUtil.GetMappedTypeName(Descriptor.MappedType);
}
}
}
protected string MessageOrGroup {
get { return Descriptor.FieldType == FieldType.Group ? "Group" : "Message"; }
}
/// <summary>
/// Returns the type name as used in CodedInputStream method names: SFixed32, UInt32 etc.
/// </summary>
protected string CapitalizedTypeName {
get {
// Our enum names match perfectly. How serendipitous.
return Descriptor.FieldType.ToString();
}
}
}
}