Store active runnable and active function in CallFrame

boa_engine/src/builtins/array/mod.rs

@@ -174,9 +174,7 @@ impl BuiltInConstructor for Array {
         // If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| context.intrinsics().constructors().array().constructor())
                 .into()
         } else {

boa_engine/src/builtins/async_function/mod.rs

@@ -66,7 +66,7 @@ impl BuiltInConstructor for AsyncFunction {
         args: &[JsValue],
         context: &mut Context<'_>,
     ) -> JsResult<JsValue> {
-        let active_function = context.vm.active_function.clone().unwrap_or_else(|| {
+        let active_function = context.active_function_object().unwrap_or_else(|| {
             context
                 .intrinsics()
                 .constructors()

boa_engine/src/builtins/async_generator_function/mod.rs

@@ -71,7 +71,7 @@ impl BuiltInConstructor for AsyncGeneratorFunction {
         args: &[JsValue],
         context: &mut Context<'_>,
     ) -> JsResult<JsValue> {
-        let active_function = context.vm.active_function.clone().unwrap_or_else(|| {
+        let active_function = context.active_function_object().unwrap_or_else(|| {
             context
                 .intrinsics()
                 .constructors()

boa_engine/src/builtins/error/aggregate.rs

@@ -63,9 +63,7 @@ impl BuiltInConstructor for AggregateError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/eval.rs

@@ -65,9 +65,7 @@ impl BuiltInConstructor for EvalError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/mod.rs

@@ -165,9 +165,7 @@ impl BuiltInConstructor for Error {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| context.intrinsics().constructors().error().constructor())
                 .into()
         } else {

boa_engine/src/builtins/error/range.rs

@@ -63,9 +63,7 @@ impl BuiltInConstructor for RangeError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/reference.rs

@@ -62,9 +62,7 @@ impl BuiltInConstructor for ReferenceError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/syntax.rs

@@ -65,9 +65,7 @@ impl BuiltInConstructor for SyntaxError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/type.rs

@@ -73,9 +73,7 @@ impl BuiltInConstructor for TypeError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/error/uri.rs

@@ -64,9 +64,7 @@ impl BuiltInConstructor for UriError {
         // 1. If NewTarget is undefined, let newTarget be the active function object; else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/eval/mod.rs

@@ -256,7 +256,7 @@ impl Eval {
         let env_fp = context.vm.environments.len() as u32;
         context
             .vm
-            .push_frame(CallFrame::new(code_block).with_env_fp(env_fp));
+            .push_frame(CallFrame::new(code_block, None, None).with_env_fp(env_fp));
         context.realm().resize_global_env();
 
         let record = context.run();

boa_engine/src/builtins/function/mod.rs

@@ -532,9 +532,7 @@ impl BuiltInConstructor for BuiltInFunctionObject {
         context: &mut Context<'_>,
     ) -> JsResult<JsValue> {
         let active_function = context
-            .vm
-            .active_function
-            .clone()
+            .active_function_object()
             .unwrap_or_else(|| context.intrinsics().constructors().function().constructor());
         Self::create_dynamic_function(active_function, new_target, args, false, false, context)
             .map(Into::into)

boa_engine/src/builtins/generator/mod.rs

@@ -60,7 +60,6 @@ unsafe impl Trace for GeneratorState {
 pub(crate) struct GeneratorContext {
     pub(crate) environments: EnvironmentStack,
     pub(crate) stack: Vec<JsValue>,
-    pub(crate) active_function: Option<JsObject>,
     pub(crate) call_frame: Option<CallFrame>,
     pub(crate) realm: Realm,
 }
@@ -70,14 +69,12 @@ impl GeneratorContext {
     pub(crate) fn new(
         environments: EnvironmentStack,
         stack: Vec<JsValue>,
-        active_function: Option<JsObject>,
         call_frame: CallFrame,
         realm: Realm,
     ) -> Self {
         Self {
             environments,
             stack,
-            active_function,
             call_frame: Some(call_frame),
             realm,
         }
@@ -90,7 +87,6 @@ impl GeneratorContext {
             environments: context.vm.environments.clone(),
             call_frame: Some(context.vm.frame().clone()),
             stack: context.vm.stack[fp..].to_vec(),
-            active_function: context.vm.active_function.clone(),
             realm: context.realm().clone(),
         };
 
@@ -108,7 +104,6 @@ impl GeneratorContext {
     ) -> CompletionRecord {
         std::mem::swap(&mut context.vm.environments, &mut self.environments);
         std::mem::swap(&mut context.vm.stack, &mut self.stack);
-        std::mem::swap(&mut context.vm.active_function, &mut self.active_function);
         context.swap_realm(&mut self.realm);
         context
             .vm
@@ -125,7 +120,6 @@ impl GeneratorContext {
 
         std::mem::swap(&mut context.vm.environments, &mut self.environments);
         std::mem::swap(&mut context.vm.stack, &mut self.stack);
-        std::mem::swap(&mut context.vm.active_function, &mut self.active_function);
         context.swap_realm(&mut self.realm);
         self.call_frame = context.vm.pop_frame();
         assert!(self.call_frame.is_some());

boa_engine/src/builtins/generator_function/mod.rs

@@ -76,7 +76,7 @@ impl BuiltInConstructor for GeneratorFunction {
         args: &[JsValue],
         context: &mut Context<'_>,
     ) -> JsResult<JsValue> {
-        let active_function = context.vm.active_function.clone().unwrap_or_else(|| {
+        let active_function = context.active_function_object().unwrap_or_else(|| {
             context
                 .intrinsics()
                 .constructors()

boa_engine/src/builtins/intl/collator/mod.rs

@@ -216,9 +216,7 @@ impl BuiltInConstructor for Collator {
         // 1. If NewTarget is undefined, let newTarget be the active function object, else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| context.intrinsics().constructors().collator().constructor())
                 .into()
         } else {

boa_engine/src/builtins/intl/date_time_format.rs

@@ -99,9 +99,7 @@ impl BuiltInConstructor for DateTimeFormat {
         // 1. If NewTarget is undefined, let newTarget be the active function object, else let newTarget be NewTarget.
         let new_target = &if new_target.is_undefined() {
             context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .unwrap_or_else(|| {
                     context
                         .intrinsics()

boa_engine/src/builtins/json/mod.rs

@@ -131,7 +131,7 @@ impl Json {
         let env_fp = context.vm.environments.len() as u32;
         context
             .vm
-            .push_frame(CallFrame::new(code_block).with_env_fp(env_fp));
+            .push_frame(CallFrame::new(code_block, None, None).with_env_fp(env_fp));
         context.realm().resize_global_env();
         let record = context.run();
         context.vm.pop_frame();

boa_engine/src/builtins/object/mod.rs

@@ -131,9 +131,7 @@ impl BuiltInConstructor for Object {
         if !new_target.is_undefined()
             && new_target
                 != &context
-                    .vm
-                    .active_function
-                    .clone()
+                    .active_function_object()
                     .unwrap_or_else(|| context.intrinsics().constructors().object().constructor())
                     .into()
         {

boa_engine/src/builtins/regexp/mod.rs

@@ -172,9 +172,7 @@ impl BuiltInConstructor for RegExp {
         if new_target.is_undefined() {
             // a. Let newTarget be the active function object.
             let new_target = context
-                .vm
-                .active_function
-                .clone()
+                .active_function_object()
                 .map_or(JsValue::undefined(), JsValue::new);
 
             // b. If patternIsRegExp is true and flags is undefined, then

boa_engine/src/context/mod.rs

@@ -27,7 +27,7 @@ use crate::{
     property::{Attribute, PropertyDescriptor, PropertyKey},
     realm::Realm,
     script::Script,
-    vm::{CallFrame, Vm},
+    vm::{ActiveRunnable, CallFrame, Vm},
     JsResult, JsValue, Source,
 };
 use boa_ast::{expression::Identifier, StatementList};
@@ -706,6 +706,41 @@ impl Context<'_> {
     pub(crate) const fn is_strict(&self) -> bool {
         self.strict
     }
+
+    /// `9.4.1 GetActiveScriptOrModule ( )`
+    ///
+    /// More information:
+    ///  - [ECMAScript reference][spec]
+    ///
+    /// [spec]: https://tc39.es/ecma262/#sec-getactivescriptormodule
+    pub(crate) fn get_active_script_or_module(&self) -> Option<ActiveRunnable> {
+        // 1. If the execution context stack is empty, return null.
+        // 2. Let ec be the topmost execution context on the execution context stack whose ScriptOrModule component is not null.
+        // 3. If no such execution context exists, return null. Otherwise, return ec's ScriptOrModule.
+        self.vm
+            .frames
+            .iter()
+            .rev()
+            .find_map(|frame| frame.active_runnable.clone())
+    }
+
+    /// Get `active function object`
+    ///
+    /// More information:
+    ///  - [ECMAScript reference][spec]
+    ///
+    /// [spec]: https://tc39.es/ecma262/#active-function-object
+    pub(crate) fn active_function_object(&self) -> Option<JsObject> {
+        if self.vm.native_active_function.is_some() {
+            return self.vm.native_active_function.clone();
+        }
+
+        if let Some(frame) = self.vm.frames.last() {
+            return frame.active_function.clone();
+        }
+
+        None
+    }
 }
 
 impl<'host> Context<'host> {

boa_engine/src/job.rs

@@ -22,7 +22,6 @@ use std::{any::Any, cell::RefCell, collections::VecDeque, fmt::Debug, future::Fu
 use crate::{
     object::{JsFunction, NativeObject},
     realm::Realm,
-    vm::ActiveRunnable,
     Context, JsResult, JsValue,
 };
 use boa_gc::{Finalize, Trace};
@@ -69,7 +68,6 @@ pub struct NativeJob {
     #[allow(clippy::type_complexity)]
     f: Box<dyn FnOnce(&mut Context<'_>) -> JsResult<JsValue>>,
     realm: Option<Realm>,
-    active_runnable: Option<ActiveRunnable>,
 }
 
 impl Debug for NativeJob {
@@ -87,19 +85,17 @@ impl NativeJob {
         Self {
             f: Box::new(f),
             realm: None,
-            active_runnable: None,
         }
     }
 
     /// Creates a new `NativeJob` from a closure and an execution realm.
-    pub fn with_realm<F>(f: F, realm: Realm, context: &mut Context<'_>) -> Self
+    pub fn with_realm<F>(f: F, realm: Realm, _context: &mut Context<'_>) -> Self
     where
         F: FnOnce(&mut Context<'_>) -> JsResult<JsValue> + 'static,
     {
         Self {
             f: Box::new(f),
             realm: Some(realm),
-            active_runnable: context.vm.active_runnable.clone(),
         }
     }
 
@@ -115,7 +111,7 @@ impl NativeJob {
     ///
     /// If the native job has an execution realm defined, this sets the running execution
     /// context to the realm's before calling the inner closure, and resets it after execution.
-    pub fn call(mut self, context: &mut Context<'_>) -> JsResult<JsValue> {
+    pub fn call(self, context: &mut Context<'_>) -> JsResult<JsValue> {
         // If realm is not null, each time job is invoked the implementation must perform
         // implementation-defined steps such that execution is prepared to evaluate ECMAScript
         // code at the time of job's invocation.
@@ -126,12 +122,9 @@ impl NativeJob {
             // invoked. If realm is not null, each time job is invoked the implementation must
             // perform implementation-defined steps such that scriptOrModule is the active script or
             // module at the time of job's invocation.
-            std::mem::swap(&mut context.vm.active_runnable, &mut self.active_runnable);
-
             let result = (self.f)(context);
 
             context.enter_realm(old_realm);
-            std::mem::swap(&mut context.vm.active_runnable, &mut self.active_runnable);
 
             result
         } else {