Struct DeclarativeEnvironmentRecord 

pub struct DeclarativeEnvironmentRecord {
    pub env_rec: GcCell<FxHashMap<Box<str>, DeclarativeEnvironmentRecordBinding>>,
    pub outer_env: Option<Environment>,
}

A declarative Environment Record binds the set of identifiers defined by the declarations contained within its scope.

Fields

env_rec: GcCell<FxHashMap<Box<str>, DeclarativeEnvironmentRecordBinding>>

outer_env: Option<Environment>

Implementations

impl DeclarativeEnvironmentRecord

pub fn new(env: Option<Environment>) -> DeclarativeEnvironmentRecord

Trait Implementations

impl Clone for DeclarativeEnvironmentRecord

fn clone(&self) -> DeclarativeEnvironmentRecord

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DeclarativeEnvironmentRecord

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for DeclarativeEnvironmentRecord

fn drop(&mut self)

Executes the destructor for this type.

impl EnvironmentRecordTrait for DeclarativeEnvironmentRecord

fn has_binding(&self, name: &str, _context: &mut Context) -> JsResult<bool>

9.1.1.1.1 HasBinding ( N )

More information:

• ECMAScript reference

fn create_mutable_binding( &self, name: &str, deletion: bool, allow_name_reuse: bool, _context: &mut Context, ) -> JsResult<()>

9.1.1.1.2 CreateMutableBinding ( N, D )

More information:

• ECMAScript reference

fn create_immutable_binding( &self, name: &str, strict: bool, _context: &mut Context, ) -> JsResult<()>

9.1.1.1.3 CreateImmutableBinding ( N, S )

More information:

• ECMAScript reference

fn initialize_binding( &self, name: &str, value: JsValue, _context: &mut Context, ) -> JsResult<()>

9.1.1.1.4 InitializeBinding ( N, V )

More information:

• ECMAScript reference

fn set_mutable_binding( &self, name: &str, value: JsValue, strict: bool, context: &mut Context, ) -> JsResult<()>

9.1.1.1.5 SetMutableBinding ( N, V, S )

More information:

• ECMAScript reference

fn get_binding_value( &self, name: &str, _strict: bool, context: &mut Context, ) -> JsResult<JsValue>

9.1.1.1.6 GetBindingValue ( N, S )

More information:

• ECMAScript reference

fn delete_binding(&self, name: &str, _context: &mut Context) -> JsResult<bool>

9.1.1.1.7 DeleteBinding ( N )

More information:

• ECMAScript reference

fn has_this_binding(&self) -> bool

9.1.1.1.8 HasThisBinding ( )

More information:

• ECMAScript reference

fn has_super_binding(&self) -> bool

9.1.1.1.9 HasSuperBinding ( )

More information:

• ECMAScript reference

fn with_base_object(&self) -> Option<JsObject>

9.1.1.1.10 WithBaseObject ( )

More information:

• ECMAScript reference

fn get_this_binding(&self, _context: &mut Context) -> JsResult<JsValue>

Return the this binding from the environment

fn get_outer_environment_ref(&self) -> Option<&Environment>

Get the next environment up

fn set_outer_environment(&mut self, env: Environment)

Set the next environment up

fn get_environment_type(&self) -> EnvironmentType

Get the type of environment this is

fn get_outer_environment(&self) -> Option<Environment>

fn recursive_get_this_binding(&self, context: &mut Context) -> JsResult<JsValue>

Return the this binding from the environment or try to get it from outer environments

fn recursive_create_mutable_binding( &self, name: &str, deletion: bool, scope: VariableScope, context: &mut Context, ) -> JsResult<()>

Create mutable binding while handling outer environments

fn recursive_create_immutable_binding( &self, name: &str, deletion: bool, scope: VariableScope, context: &mut Context, ) -> JsResult<()>

Create immutable binding while handling outer environments

fn recursive_set_mutable_binding( &self, name: &str, value: JsValue, strict: bool, context: &mut Context, ) -> JsResult<()>

Set mutable binding while handling outer environments

fn recursive_initialize_binding( &self, name: &str, value: JsValue, context: &mut Context, ) -> JsResult<()>

Initialize binding while handling outer environments

fn recursive_has_binding( &self, name: &str, context: &mut Context, ) -> JsResult<bool>

Check if a binding exists in current or any outer environment

fn recursive_get_binding_value( &self, name: &str, context: &mut Context, ) -> JsResult<JsValue>

Retrieve binding from current or any outer environment

impl Finalize for DeclarativeEnvironmentRecord

fn finalize(&self)

impl From<DeclarativeEnvironmentRecord> for Environment

fn from(env: DeclarativeEnvironmentRecord) -> Environment

Converts to this type from the input type.

impl Trace for DeclarativeEnvironmentRecord

unsafe fn trace(&self)

Marks all contained Gcs.

unsafe fn root(&self)

Increments the root-count of all contained Gcs.

unsafe fn unroot(&self)

Decrements the root-count of all contained Gcs.

fn finalize_glue(&self)

Runs Finalize::finalize() on this object and all contained subobjects