Struct FastHydrationPlugin 

pub struct FastHydrationPlugin { /* private fields */ }

FAST Hydration handler plugin.

Emits HTML comment markers around dynamic bindings so that FAST-HTML can re-hydrate server-rendered content on the client side.

The root scope is disabled (no markers) — hydration only activates in child scopes (components, for-loop items, if-condition bodies). This matches the C++ and JS prototype behavior.

Implementations

impl FastHydrationPlugin

pub fn new() -> Self

Create a new FAST hydration plugin. The initial root scope is disabled — markers only emitted in child scopes.

Trait Implementations

impl Default for FastHydrationPlugin

fn default() -> Self

Returns the “default value” for a type.

impl HandlerPlugin for FastHydrationPlugin

fn write_route_component_state( &self, state: &Value, writer: &mut dyn ResponseWriter, ) -> Result<()>

FAST emits scalar attributes + data-state JSON on route component elements. Components read these via @attr and prepare().

fn push_scope(&mut self)

Enter a new scope (component or for-loop item boundary). Typically resets per-scope counters.

fn pop_scope(&mut self)

Exit the current scope, restoring the parent scope state.

fn on_binding_start( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called before rendering a signal binding.

fn on_binding_end( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called after rendering a signal binding.

fn on_repeat_item_start( &mut self, index: usize, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called before rendering a repeat item in a for loop.

fn on_repeat_item_end( &mut self, index: usize, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called after rendering a repeat item.

fn on_element_data( &mut self, data: &[u8], writer: &mut dyn ResponseWriter, ) -> Result<()>

Called when parser-produced element metadata is encountered.

fn on_for_start( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called before rendering a for-loop block. Defaults to on_binding_start.

fn on_for_end( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called after rendering a for-loop block. Defaults to on_binding_end.

fn on_if_start( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called before rendering an if-condition block. Defaults to on_binding_start.

fn on_if_end( &mut self, name: &str, writer: &mut dyn ResponseWriter, ) -> Result<()>

Called after rendering an if-condition block. Defaults to on_binding_end.

fn emit_templates( &self, protocol: &WebUIProtocol, components: &HashSet<String>, _nonce: Option<&str>, writer: &mut dyn ResponseWriter, ) -> Result<()>

Emit component templates collected during SSR. The default emits each template as-is (suitable for FAST <f-template> tags). The WebUI plugin overrides this to wrap all raw JS IIFE templates in a single <script> tag.