Struct ScriptEngine 

pub struct ScriptEngine {
    pub vm: JsVm,
    pub gc: GcHeap,
    pub dom_api: DomApi,
    pub last_error: Option<String>,
    /* private fields */
}

The script engine integrating all JS components

Fields

vm: JsVm

JavaScript virtual machine

gc: GcHeap

Garbage collector heap

dom_api: DomApi

DOM API bridge

last_error: Option<String>

Last error message

Implementations

impl ScriptEngine

pub fn new() -> Self

pub fn execute_script(&mut self, source: &str) -> Result<(), String>

Execute a JavaScript source string. Returns Ok(()) on success, Err(message) on failure.

pub fn process_script_tags(&mut self, html: &str) -> usize

Extract inline JavaScript from <script> tags and execute each. Returns the number of scripts successfully executed.

pub fn tick(&mut self)

Process a single tick of the event loop:

1. Process expired timers
2. Execute microtasks
3. Run GC if needed

pub fn process_event(&mut self, event_type: EventType, target_node: NodeId)

Process a DOM event: dispatch it through the event system, then invoke any JS callbacks that were triggered.

pub fn process_click(&mut self, x: i32, y: i32)

Process a click at pixel coordinates

pub fn queue_microtask(&mut self, callback_id: usize)

Schedule a microtask

pub fn console_output(&self) -> Vec<String>

Get the console output from both JS VM and DOM API

pub fn clear_console(&mut self)

Clear console output

pub fn scripts_executed(&self) -> usize

Number of scripts executed

pub fn ticks_processed(&self) -> u64

Number of ticks processed

pub fn set_global(&mut self, name: &str, value: JsValue)

Set a global variable in the JS VM

pub fn get_global(&self, name: &str) -> Option<&JsValue>

Get a global variable from the JS VM

Trait Implementations

impl Default for ScriptEngine

fn default() -> Self

Returns the “default value” for a type.