avm2: Add Date stub

core/src/avm2/globals.rs

@@ -18,6 +18,7 @@ use gc_arena::{Collect, GcCell, MutationContext};
 mod array;
 mod boolean;
 mod class;
+mod date;
 mod flash;
 mod function;
 mod global_scope;
@@ -120,6 +121,7 @@ pub struct SystemPrototypes<'gc> {
     pub soundchannel: Object<'gc>,
     pub bitmap: Object<'gc>,
     pub bitmapdata: Object<'gc>,
+    pub date: Object<'gc>,
 }
 
 impl<'gc> SystemPrototypes<'gc> {
@@ -174,6 +176,7 @@ impl<'gc> SystemPrototypes<'gc> {
             soundchannel: empty,
             bitmap: empty,
             bitmapdata: empty,
+            date: empty,
         }
     }
 }
@@ -219,6 +222,7 @@ pub struct SystemClasses<'gc> {
     pub soundchannel: Object<'gc>,
     pub bitmap: Object<'gc>,
     pub bitmapdata: Object<'gc>,
+    pub date: Object<'gc>,
 }
 
 impl<'gc> SystemClasses<'gc> {
@@ -273,6 +277,7 @@ impl<'gc> SystemClasses<'gc> {
             soundchannel: empty,
             bitmap: empty,
             bitmapdata: empty,
+            date: empty,
         }
     }
 }
@@ -555,6 +560,8 @@ pub fn load_player_globals<'gc>(
         script
     );
 
+    avm2_system_class!(date, activation, date::create_class(mc), domain, script);
+
     // package `flash.system`
     avm2_system_class!(
         application_domain,

core/src/avm2/globals/date.rs

@@ -0,0 +1,48 @@
+//! `Date` class
+
+use crate::avm2::activation::Activation;
+use crate::avm2::class::Class;
+use crate::avm2::method::Method;
+use crate::avm2::names::{Namespace, QName};
+use crate::avm2::object::{date_allocator, Object};
+use crate::avm2::value::Value;
+use crate::avm2::Error;
+use gc_arena::{GcCell, MutationContext};
+
+/// Implements `Date`'s instance constructor.
+pub fn instance_init<'gc>(
+    activation: &mut Activation<'_, 'gc, '_>,
+    this: Option<Object<'gc>>,
+    _args: &[Value<'gc>],
+) -> Result<Value<'gc>, Error> {
+    if let Some(this) = this {
+        activation.super_init(this, &[])?;
+    }
+
+    Ok(Value::Undefined)
+}
+
+/// Implements `Date`'s class constructor.
+pub fn class_init<'gc>(
+    _activation: &mut Activation<'_, 'gc, '_>,
+    _this: Option<Object<'gc>>,
+    _args: &[Value<'gc>],
+) -> Result<Value<'gc>, Error> {
+    Ok(Value::Undefined)
+}
+
+/// Construct `Date`'s class.
+pub fn create_class<'gc>(mc: MutationContext<'gc, '_>) -> GcCell<'gc, Class<'gc>> {
+    let class = Class::new(
+        QName::new(Namespace::public(), "Date"),
+        Some(QName::new(Namespace::public(), "Object").into()),
+        Method::from_builtin(instance_init, "<Date instance initializer>", mc),
+        Method::from_builtin(class_init, "<Date class initializer>", mc),
+        mc,
+    );
+
+    let mut write = class.write(mc);
+    write.set_instance_allocator(date_allocator);
+
+    class
+}

core/src/avm2/object.rs

@@ -29,6 +29,7 @@ mod bitmapdata_object;
 mod bytearray_object;
 mod class_object;
 mod custom_object;
+mod date_object;
 mod dispatch_object;
 mod domain_object;
 mod event_object;
@@ -48,6 +49,7 @@ pub use crate::avm2::object::array_object::{array_allocator, ArrayObject};
 pub use crate::avm2::object::bitmapdata_object::{bitmapdata_allocator, BitmapDataObject};
 pub use crate::avm2::object::bytearray_object::{bytearray_allocator, ByteArrayObject};
 pub use crate::avm2::object::class_object::ClassObject;
+pub use crate::avm2::object::date_object::{date_allocator, DateObject};
 pub use crate::avm2::object::dispatch_object::DispatchObject;
 pub use crate::avm2::object::domain_object::{appdomain_allocator, DomainObject};
 pub use crate::avm2::object::event_object::{event_allocator, EventObject};
@@ -90,6 +92,7 @@ pub use crate::avm2::object::xml_object::{xml_allocator, XmlObject};
         SoundObject(SoundObject<'gc>),
         SoundChannelObject(SoundChannelObject<'gc>),
         BitmapDataObject(BitmapDataObject<'gc>),
+        DateObject(DateObject<'gc>),
     }
 )]
 pub trait TObject<'gc>: 'gc + Collect + Debug + Into<Object<'gc>> + Clone + Copy {

core/src/avm2/object/date_object.rs

@@ -0,0 +1,58 @@
+use crate::avm2::activation::Activation;
+use crate::avm2::names::{Namespace, QName};
+use crate::avm2::object::script_object::ScriptObjectData;
+use crate::avm2::object::{Object, ObjectPtr, TObject};
+use crate::avm2::scope::Scope;
+use crate::avm2::value::Value;
+use crate::avm2::Error;
+use crate::string::AvmString;
+use crate::{
+    impl_avm2_custom_object, impl_avm2_custom_object_instance, impl_avm2_custom_object_properties,
+};
+use gc_arena::{Collect, GcCell, MutationContext};
+
+/// A class instance allocator that allocates Date objects.
+pub fn date_allocator<'gc>(
+    class: Object<'gc>,
+    proto: Object<'gc>,
+    activation: &mut Activation<'_, 'gc, '_>,
+) -> Result<Object<'gc>, Error> {
+    let base = ScriptObjectData::base_new(Some(proto), Some(class));
+
+    Ok(DateObject(GcCell::allocate(
+        activation.context.gc_context,
+        DateObjectData { base },
+    ))
+    .into())
+}
+#[derive(Clone, Collect, Debug, Copy)]
+#[collect(no_drop)]
+pub struct DateObject<'gc>(GcCell<'gc, DateObjectData<'gc>>);
+
+#[derive(Clone, Collect, Debug)]
+#[collect(no_drop)]
+pub struct DateObjectData<'gc> {
+    /// Base script object
+    base: ScriptObjectData<'gc>,
+}
+
+impl<'gc> TObject<'gc> for DateObject<'gc> {
+    impl_avm2_custom_object!(base);
+    impl_avm2_custom_object_properties!(base);
+    impl_avm2_custom_object_instance!(base);
+
+    fn derive(&self, activation: &mut Activation<'_, 'gc, '_>) -> Result<Object<'gc>, Error> {
+        let this: Object<'gc> = Object::DateObject(*self);
+        let base = ScriptObjectData::base_new(Some(this), None);
+
+        Ok(DateObject(GcCell::allocate(
+            activation.context.gc_context,
+            DateObjectData { base },
+        ))
+        .into())
+    }
+
+    fn value_of(&self, _mc: MutationContext<'gc, '_>) -> Result<Value<'gc>, Error> {
+        Ok(Value::Object(Object::from(*self)))
+    }
+}