74 lines
2.4 KiB
Rust
74 lines
2.4 KiB
Rust
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use std::any::Any;
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use std::sync::atomic::{AtomicBool, AtomicPtr, AtomicUsize};
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use hashbrown::HashSet;
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use crate::dynamic_data::Script;
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use crate::script_implementations::wasm::script_resolver::WebAssemblyScriptResolver;
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use crate::script_implementations::wasm::WebAssemblyScriptCapabilities;
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use crate::StringKey;
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/// A WebAssemblyScript is there to implement the Script trait within WebAssemblyScript.
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pub struct WebAssemblyScript {
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/// The unique identifier of the script.
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name: StringKey,
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/// Returns an atomic bool for internal marking of deletion. This is currently only specifically
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/// used for deletion of a script while we are holding a reference to it (i.e. executing a script
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/// hook on it).
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marked_for_deletion: AtomicBool,
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/// A script can be suppressed by other scripts. If a script is suppressed by at least one script
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/// we will not execute its methods. This holds the number of suppressions on the script.
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suppressed_count: AtomicUsize,
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/// The owner of this script (where the script is attached to)
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owner_ptr: AtomicPtr<u8>,
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/// Pointer inside WebAssembly memory where the data is for this script.
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self_ptr: u32,
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/// Capabilities define which functions we actually implement.
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capabilities: AtomicPtr<HashSet<WebAssemblyScriptCapabilities>>,
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/// A reference back to our resolver.
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resolver: AtomicPtr<WebAssemblyScriptResolver>,
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}
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impl WebAssemblyScript {
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/// Instantiates a new WebAssemblyScript.
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pub fn new(
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owner_ptr: *mut u8,
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self_ptr: u32,
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capabilities: *mut HashSet<WebAssemblyScriptCapabilities>,
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resolver: *mut WebAssemblyScriptResolver,
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name: StringKey,
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) -> Self {
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Self {
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name,
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marked_for_deletion: Default::default(),
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suppressed_count: Default::default(),
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owner_ptr: AtomicPtr::new(owner_ptr),
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self_ptr,
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capabilities: AtomicPtr::new(capabilities),
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resolver: AtomicPtr::new(resolver),
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}
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}
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}
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impl Script for WebAssemblyScript {
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fn name(&self) -> &StringKey {
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&self.name
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}
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fn get_marked_for_deletion(&self) -> &AtomicBool {
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&self.marked_for_deletion
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}
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fn get_suppressed_count(&self) -> &AtomicUsize {
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&self.suppressed_count
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}
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fn as_any(&self) -> &dyn Any {
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self
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}
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fn as_any_mut(&mut self) -> &mut dyn Any {
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self
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}
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}
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