avm2: Port `flash.net.ObjectEncoding` to ActionScript

Along with the `flash.net.IDynamicPropertyOutput` and `flash.net.IDynamicPropertyWriter`
interfaces.

core/src/avm2/globals.rs

@@ -603,12 +603,6 @@ pub fn load_player_globals<'gc>(
         script
     );
 
-    class(
-        activation,
-        flash::net::object_encoding::create_class(mc),
-        script,
-    )?;
-
     // package `flash.text`
     avm2_system_class!(
         textfield,

core/src/avm2/globals/flash/net/IDynamicPropertyOutput.as

@@ -0,0 +1,5 @@
+package flash.net {
+    public interface IDynamicPropertyOutput {
+        function writeDynamicProperty(name: String, value: *): void;
+    }
+}

core/src/avm2/globals/flash/net/IDynamicPropertyWriter.as

@@ -0,0 +1,5 @@
+package flash.net {
+    public interface IDynamicPropertyWriter {
+        function writeDynamicProperties(obj: Object, output: IDynamicPropertyOutput): void;
+    }
+}

core/src/avm2/globals/flash/net/ObjectEncoding.as

@@ -0,0 +1,13 @@
+package flash.net {
+    public final class ObjectEncoding {
+        public static const AMF0: uint = 0;
+
+        public static const AMF3: uint = 3;
+
+        public static const DEFAULT: uint = 3;
+
+        public static native function get dynamicPropertyWriter(): IDynamicPropertyWriter;
+
+        public static native function set dynamicPropertyWriter(value: IDynamicPropertyWriter): void;
+    }
+}

core/src/avm2/globals/flash/net/object_encoding.rs

@@ -1,47 +1,22 @@
 use crate::avm2::activation::Activation;
-use crate::avm2::class::{Class, ClassAttributes};
-use crate::avm2::method::Method;
 use crate::avm2::object::Object;
 use crate::avm2::value::Value;
 use crate::avm2::Error;
-use crate::avm2::Multiname;
-use crate::avm2::Namespace;
-use crate::avm2::QName;
-use gc_arena::{GcCell, MutationContext};
 
-/// Implements `flash.net.ObjectEncoding`'s instance constructor.
-pub fn instance_init<'gc>(
+pub fn get_dynamic_property_writer<'gc>(
     _activation: &mut Activation<'_, 'gc, '_>,
     _this: Option<Object<'gc>>,
     _args: &[Value<'gc>],
 ) -> Result<Value<'gc>, Error<'gc>> {
+    log::warn!("ObjectEncoding.dynamicPropertyWriter: Not yet implemented");
     Ok(Value::Undefined)
 }
 
-/// Implements `flash.net.ObjectEncoding`'s class constructor.
-pub fn class_init<'gc>(
+pub fn set_dynamic_property_writer<'gc>(
     _activation: &mut Activation<'_, 'gc, '_>,
     _this: Option<Object<'gc>>,
     _args: &[Value<'gc>],
 ) -> Result<Value<'gc>, Error<'gc>> {
+    log::warn!("ObjectEncoding.dynamicPropertyWriter: Not yet implemented");
     Ok(Value::Undefined)
 }
-
-pub fn create_class<'gc>(mc: MutationContext<'gc, '_>) -> GcCell<'gc, Class<'gc>> {
-    let class = Class::new(
-        QName::new(Namespace::package("flash.net"), "ObjectEncoding"),
-        Some(Multiname::public("Object")),
-        Method::from_builtin(instance_init, "<ObjectEncoding instance initializer>", mc),
-        Method::from_builtin(class_init, "<ObjectEncoding class initializer>", mc),
-        mc,
-    );
-
-    let mut write = class.write(mc);
-
-    write.set_attributes(ClassAttributes::FINAL | ClassAttributes::SEALED);
-
-    const CONSTANTS: &[(&str, u32)] = &[("AMF0", 0), ("AMF3", 3), ("DEFAULT", 3)];
-    write.define_public_constant_uint_class_traits(CONSTANTS);
-
-    class
-}

core/src/avm2/globals/globals.as

@@ -141,16 +141,21 @@ include "flash/media/StageVideoAvailability.as"
 include "flash/media/StageVideoAvailabilityReason.as"
 include "flash/media/VideoCodec.as"
 include "flash/media/VideoStatus.as"
+
+include "flash/net/IDynamicPropertyOutput.as"
+include "flash/net/IDynamicPropertyWriter.as"
 include "flash/net/NetGroupReceiveMode.as"
 include "flash/net/NetGroupReplicationStrategy.as"
 include "flash/net/NetGroupSendMode.as"
 include "flash/net/NetGroupSendResult.as"
+include "flash/net/ObjectEncoding.as"
 include "flash/net/SharedObjectFlushStatus.as"
 include "flash/net/URLLoader.as"
 include "flash/net/URLLoaderDataFormat.as"
 include "flash/net/URLRequest.as"
 include "flash/net/URLRequestHeader.as"
 include "flash/net/URLRequestMethod.as"
+
 include "flash/printing/PrintJobOrientation.as"
 include "flash/security/CertificateStatus.as"
 include "flash/system/Capabilities.as"