Generated code for previous commit.

9 files changed, 57 insertions, 57 deletions

diff --git a/csharp/src/AddressBook/Addressbook.cs b/csharp/src/AddressBook/Addressbook.cs
index 92f983e7..25752e20 100644
--- a/csharp/src/AddressBook/Addressbook.cs
+++ b/csharp/src/AddressBook/Addressbook.cs
@@ -76,7 +76,7 @@ namespace Google.Protobuf.Examples.AddressBook {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -94,7 +94,7 @@ namespace Google.Protobuf.Examples.AddressBook {
     public string Email {
       get { return email_; }
       set {
-        email_ = value ?? "";
+        email_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -257,7 +257,7 @@ namespace Google.Protobuf.Examples.AddressBook {
         public string Number {
           get { return number_; }
           set {
-            number_ = value ?? "";
+            number_ = pb::Preconditions.CheckNotNull(value, "value");
           }
         }
 
diff --git a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
index 1f2e9229..e360ac15 100644
--- a/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
+++ b/csharp/src/Google.Protobuf.Test/TestProtos/UnittestProto3.cs
@@ -426,7 +426,7 @@ namespace Google.Protobuf.TestProtos {
     public string SingleString {
       get { return singleString_; }
       set {
-        singleString_ = value ?? "";
+        singleString_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -435,7 +435,7 @@ namespace Google.Protobuf.TestProtos {
     public pb::ByteString SingleBytes {
       get { return singleBytes_; }
       set {
-        singleBytes_ = value ?? pb::ByteString.Empty;
+        singleBytes_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -700,7 +700,7 @@ namespace Google.Protobuf.TestProtos {
     public string OneofString {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofString ? (string) oneofField_ : ""; }
       set {
-        oneofField_ = value ?? "";
+        oneofField_ = pb::Preconditions.CheckNotNull(value, "value");
         oneofFieldCase_ = OneofFieldOneofCase.OneofString;
       }
     }
@@ -709,7 +709,7 @@ namespace Google.Protobuf.TestProtos {
     public pb::ByteString OneofBytes {
       get { return oneofFieldCase_ == OneofFieldOneofCase.OneofBytes ? (pb::ByteString) oneofField_ : pb::ByteString.Empty; }
       set {
-        oneofField_ = value ?? pb::ByteString.Empty;
+        oneofField_ = pb::Preconditions.CheckNotNull(value, "value");
         oneofFieldCase_ = OneofFieldOneofCase.OneofBytes;
       }
     }
@@ -2703,7 +2703,7 @@ namespace Google.Protobuf.TestProtos {
     public string StringField {
       get { return stringField_; }
       set {
-        stringField_ = value ?? "";
+        stringField_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2954,7 +2954,7 @@ namespace Google.Protobuf.TestProtos {
     public string MyString {
       get { return myString_; }
       set {
-        myString_ = value ?? "";
+        myString_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3385,7 +3385,7 @@ namespace Google.Protobuf.TestProtos {
     public string Data {
       get { return data_; }
       set {
-        data_ = value ?? "";
+        data_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3589,7 +3589,7 @@ namespace Google.Protobuf.TestProtos {
     public pb::ByteString Data {
       get { return data_; }
       set {
-        data_ = value ?? pb::ByteString.Empty;
+        data_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3695,7 +3695,7 @@ namespace Google.Protobuf.TestProtos {
     public pb::ByteString Data {
       get { return data_; }
       set {
-        data_ = value ?? pb::ByteString.Empty;
+        data_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -4350,7 +4350,7 @@ namespace Google.Protobuf.TestProtos {
     public string FooString {
       get { return fooCase_ == FooOneofCase.FooString ? (string) foo_ : ""; }
       set {
-        foo_ = value ?? "";
+        foo_ = pb::Preconditions.CheckNotNull(value, "value");
         fooCase_ = FooOneofCase.FooString;
       }
     }
@@ -5409,7 +5409,7 @@ namespace Google.Protobuf.TestProtos {
     public string A {
       get { return a_; }
       set {
-        a_ = value ?? "";
+        a_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
diff --git a/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
index 213863e2..e40472cb 100644
--- a/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
+++ b/csharp/src/Google.Protobuf/Reflection/DescriptorProtoFile.cs
@@ -301,7 +301,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -310,7 +310,7 @@ namespace Google.Protobuf.Reflection {
     internal string Package {
       get { return package_; }
       set {
-        package_ = value ?? "";
+        package_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -393,7 +393,7 @@ namespace Google.Protobuf.Reflection {
     internal string Syntax {
       get { return syntax_; }
       set {
-        syntax_ = value ?? "";
+        syntax_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -649,7 +649,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1200,7 +1200,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1236,7 +1236,7 @@ namespace Google.Protobuf.Reflection {
     internal string TypeName {
       get { return typeName_; }
       set {
-        typeName_ = value ?? "";
+        typeName_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1245,7 +1245,7 @@ namespace Google.Protobuf.Reflection {
     internal string Extendee {
       get { return extendee_; }
       set {
-        extendee_ = value ?? "";
+        extendee_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1254,7 +1254,7 @@ namespace Google.Protobuf.Reflection {
     internal string DefaultValue {
       get { return defaultValue_; }
       set {
-        defaultValue_ = value ?? "";
+        defaultValue_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1545,7 +1545,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1653,7 +1653,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1809,7 +1809,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -1973,7 +1973,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2132,7 +2132,7 @@ namespace Google.Protobuf.Reflection {
     internal string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2141,7 +2141,7 @@ namespace Google.Protobuf.Reflection {
     internal string InputType {
       get { return inputType_; }
       set {
-        inputType_ = value ?? "";
+        inputType_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2150,7 +2150,7 @@ namespace Google.Protobuf.Reflection {
     internal string OutputType {
       get { return outputType_; }
       set {
-        outputType_ = value ?? "";
+        outputType_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2383,7 +2383,7 @@ namespace Google.Protobuf.Reflection {
     internal string JavaPackage {
       get { return javaPackage_; }
       set {
-        javaPackage_ = value ?? "";
+        javaPackage_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2392,7 +2392,7 @@ namespace Google.Protobuf.Reflection {
     internal string JavaOuterClassname {
       get { return javaOuterClassname_; }
       set {
-        javaOuterClassname_ = value ?? "";
+        javaOuterClassname_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2437,7 +2437,7 @@ namespace Google.Protobuf.Reflection {
     internal string GoPackage {
       get { return goPackage_; }
       set {
-        goPackage_ = value ?? "";
+        goPackage_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2491,7 +2491,7 @@ namespace Google.Protobuf.Reflection {
     internal string ObjcClassPrefix {
       get { return objcClassPrefix_; }
       set {
-        objcClassPrefix_ = value ?? "";
+        objcClassPrefix_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -2500,7 +2500,7 @@ namespace Google.Protobuf.Reflection {
     internal string CsharpNamespace {
       get { return csharpNamespace_; }
       set {
-        csharpNamespace_ = value ?? "";
+        csharpNamespace_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3853,7 +3853,7 @@ namespace Google.Protobuf.Reflection {
     internal string IdentifierValue {
       get { return identifierValue_; }
       set {
-        identifierValue_ = value ?? "";
+        identifierValue_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3889,7 +3889,7 @@ namespace Google.Protobuf.Reflection {
     internal pb::ByteString StringValue {
       get { return stringValue_; }
       set {
-        stringValue_ = value ?? pb::ByteString.Empty;
+        stringValue_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -3898,7 +3898,7 @@ namespace Google.Protobuf.Reflection {
     internal string AggregateValue {
       get { return aggregateValue_; }
       set {
-        aggregateValue_ = value ?? "";
+        aggregateValue_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -4095,7 +4095,7 @@ namespace Google.Protobuf.Reflection {
         internal string NamePart_ {
           get { return namePart_; }
           set {
-            namePart_ = value ?? "";
+            namePart_ = pb::Preconditions.CheckNotNull(value, "value");
           }
         }
 
@@ -4350,7 +4350,7 @@ namespace Google.Protobuf.Reflection {
         internal string LeadingComments {
           get { return leadingComments_; }
           set {
-            leadingComments_ = value ?? "";
+            leadingComments_ = pb::Preconditions.CheckNotNull(value, "value");
           }
         }
 
@@ -4359,7 +4359,7 @@ namespace Google.Protobuf.Reflection {
         internal string TrailingComments {
           get { return trailingComments_; }
           set {
-            trailingComments_ = value ?? "";
+            trailingComments_ = pb::Preconditions.CheckNotNull(value, "value");
           }
         }
 
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
index 86c8552f..93395871 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Any.cs
@@ -71,7 +71,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string TypeUrl {
       get { return typeUrl_; }
       set {
-        typeUrl_ = value ?? "";
+        typeUrl_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -80,7 +80,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public pb::ByteString Value {
       get { return value_; }
       set {
-        value_ = value ?? pb::ByteString.Empty;
+        value_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
index a8d4942a..366bba21 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Api.cs
@@ -84,7 +84,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -109,7 +109,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Version {
       get { return version_; }
       set {
-        version_ = value ?? "";
+        version_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -285,7 +285,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -294,7 +294,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string RequestTypeUrl {
       get { return requestTypeUrl_; }
       set {
-        requestTypeUrl_ = value ?? "";
+        requestTypeUrl_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -312,7 +312,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string ResponseTypeUrl {
       get { return responseTypeUrl_; }
       set {
-        responseTypeUrl_ = value ?? "";
+        responseTypeUrl_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs b/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
index c86dbada..04fb6350 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/SourceContext.cs
@@ -71,7 +71,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string FileName {
       get { return fileName_; }
       set {
-        fileName_ = value ?? "";
+        fileName_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
index a4411dd0..15dd6dcd 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Struct.cs
@@ -224,7 +224,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string StringValue {
       get { return kindCase_ == KindOneofCase.StringValue ? (string) kind_ : ""; }
       set {
-        kind_ = value ?? "";
+        kind_ = pb::Preconditions.CheckNotNull(value, "value");
         kindCase_ = KindOneofCase.StringValue;
       }
     }
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
index 91ac0f6b..64142934 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Type.cs
@@ -105,7 +105,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -327,7 +327,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -336,7 +336,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string TypeUrl {
       get { return typeUrl_; }
       set {
-        typeUrl_ = value ?? "";
+        typeUrl_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -610,7 +610,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -783,7 +783,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -932,7 +932,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Name {
       get { return name_; }
       set {
-        name_ = value ?? "";
+        name_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
diff --git a/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs b/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
index a5f6b7e8..c9dd6ea6 100644
--- a/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
+++ b/csharp/src/Google.Protobuf/WellKnownTypes/Wrappers.cs
@@ -822,7 +822,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public string Value {
       get { return value_; }
       set {
-        value_ = value ?? "";
+        value_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }
 
@@ -928,7 +928,7 @@ namespace Google.Protobuf.WellKnownTypes {
     public pb::ByteString Value {
       get { return value_; }
       set {
-        value_ = value ?? pb::ByteString.Empty;
+        value_ = pb::Preconditions.CheckNotNull(value, "value");
       }
     }