avm2: Expose `Boolean` methods in the `public` namespace via prototypes.

core/src/avm2/globals/boolean.rs

@@ -4,7 +4,7 @@ use crate::avm2::activation::Activation;
 use crate::avm2::class::Class;
 use crate::avm2::method::{Method, NativeMethodImpl};
 use crate::avm2::names::{Namespace, QName};
-use crate::avm2::object::{primitive_allocator, Object, TObject};
+use crate::avm2::object::{primitive_allocator, FunctionObject, Object, TObject};
 use crate::avm2::value::Value;
 use crate::avm2::Error;
 use gc_arena::{GcCell, MutationContext};
@@ -46,10 +46,44 @@ pub fn native_instance_init<'gc>(
 
 /// Implements `Boolean`'s class initializer.
 pub fn class_init<'gc>(
-    _activation: &mut Activation<'_, 'gc, '_>,
-    _this: Option<Object<'gc>>,
+    activation: &mut Activation<'_, 'gc, '_>,
+    this: Option<Object<'gc>>,
     _args: &[Value<'gc>],
 ) -> Result<Value<'gc>, Error> {
+    if let Some(this) = this {
+        let mut boolean_proto = this
+            .get_property(this, &QName::dynamic_name("prototype").into(), activation)?
+            .coerce_to_object(activation)?;
+        let scope = activation.create_scopechain();
+        let gc_context = activation.context.gc_context;
+        let this_class = this.as_class_object().unwrap();
+
+        boolean_proto.install_dynamic_property(
+            gc_context,
+            QName::new(Namespace::public(), "toString"),
+            FunctionObject::from_method(
+                activation,
+                Method::from_builtin(to_string, "toString", gc_context),
+                scope,
+                None,
+                Some(this_class),
+            )
+            .into(),
+        )?;
+        boolean_proto.install_dynamic_property(
+            gc_context,
+            QName::new(Namespace::public(), "valueOf"),
+            FunctionObject::from_method(
+                activation,
+                Method::from_builtin(value_of, "valueOf", gc_context),
+                scope,
+                None,
+                Some(this_class),
+            )
+            .into(),
+        )?;
+    }
+
     Ok(Value::Undefined)
 }
 
@@ -61,14 +95,15 @@ pub fn to_string<'gc>(
 ) -> Result<Value<'gc>, Error> {
     if let Some(this) = this {
         if let Some(this) = this.as_primitive() {
-            match this.coerce_to_boolean() {
-                true => return Ok("true".into()),
-                false => return Ok("false".into()),
+            match this.clone() {
+                Value::Bool(true) => return Ok("true".into()),
+                Value::Bool(false) => return Ok("false".into()),
+                _ => {}
             };
         }
     }
 
-    Ok(Value::Undefined)
+    Err("Boolean.prototype.toString has been called on an incompatible object".into())
 }
 
 /// Implements `Boolean.valueOf`