Use Rust wasmtime implementation

Cargo.toml

@@ -122,6 +122,7 @@ pecos-qis-selene = { version = "0.1.1", path = "crates/pecos-qis-selene" }
 pecos-qis-core = { version = "0.1.1", path = "crates/pecos-qis-core" }
 pecos-hugr-qis = { version = "0.1.1", path = "crates/pecos-hugr-qis" }
 pecos-rslib = { version = "0.1.1", path = "python/pecos-rslib/rust" }
+pecos-wasm = { version = "0.1.1", path = "crates/pecos-wasm" }
 pecos-build-utils = { version = "0.1.1", path = "crates/pecos-build-utils" }
 pecos-llvm-utils = { version = "0.1.1", path = "crates/pecos-llvm-utils" }
 

crates/pecos-phir-json/Cargo.toml

@@ -15,7 +15,7 @@ description = "PHIR-JSON (PECOS High-level Intermediate Representation JSON form
 default = ["v0_1", "wasm"]
 v0_1 = []
 all-versions = ["v0_1"]
-wasm = ["wasmtime", "wat", "parking_lot"]
+wasm = ["pecos-wasm/wasm", "wat"]
 
 [dependencies]
 log.workspace = true
@@ -25,9 +25,8 @@ pecos-core.workspace = true
 pecos-engines.workspace = true
 pecos-phir.workspace = true
 pecos-programs.workspace = true
-wasmtime = { workspace = true, optional = true }
+pecos-wasm = { workspace = true, optional = true }
 wat = { workspace = true, optional = true }
-parking_lot = { workspace = true, optional = true }
 
 [dev-dependencies]
 # Testing

crates/pecos-phir-json/src/v0_1/foreign_objects.rs

@@ -1,88 +1,7 @@
-use pecos_core::errors::PecosError;
-use std::any::Any;
-use std::fmt::Debug;
+// Re-export from pecos-wasm crate
+#[cfg(feature = "wasm")]
+pub use pecos_wasm::{DummyForeignObject, ForeignObject};
 
-/// Trait for foreign object implementations
-pub trait ForeignObject: Debug + Send + Sync {
-    /// Clone the foreign object
-    fn clone_box(&self) -> Box<dyn ForeignObject>;
-    /// Initialize object before running a series of simulations
-    ///
-    /// # Errors
-    /// Returns an error if initialization fails.
-    fn init(&mut self) -> Result<(), PecosError>;
-
-    /// Create new instance/internal state
-    ///
-    /// # Errors
-    /// Returns an error if instance creation fails.
-    fn new_instance(&mut self) -> Result<(), PecosError>;
-
-    /// Get a list of function names available from the object
-    fn get_funcs(&self) -> Vec<String>;
-
-    /// Execute a function given a list of arguments
-    ///
-    /// # Errors
-    /// Returns an error if the function does not exist or execution fails.
-    fn exec(&mut self, func_name: &str, args: &[i64]) -> Result<Vec<i64>, PecosError>;
-
-    /// Cleanup resources
-    fn teardown(&mut self) {}
-
-    /// Get as Any for downcasting
-    fn as_any(&self) -> &dyn Any;
-
-    /// Get as Any for downcasting (mutable)
-    fn as_any_mut(&mut self) -> &mut dyn Any;
-}
-
-/// Dummy foreign object for when no foreign object is needed
-#[derive(Debug, Clone)]
-pub struct DummyForeignObject {}
-
-impl DummyForeignObject {
-    /// Create a new dummy foreign object
-    #[must_use]
-    pub fn new() -> Self {
-        Self {}
-    }
-}
-
-impl Default for DummyForeignObject {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-impl ForeignObject for DummyForeignObject {
-    fn clone_box(&self) -> Box<dyn ForeignObject> {
-        Box::new(Self::default())
-    }
-
-    fn init(&mut self) -> Result<(), PecosError> {
-        Ok(())
-    }
-
-    fn new_instance(&mut self) -> Result<(), PecosError> {
-        Ok(())
-    }
-
-    fn get_funcs(&self) -> Vec<String> {
-        vec![]
-    }
-
-    fn exec(&mut self, func_name: &str, _args: &[i64]) -> Result<Vec<i64>, PecosError> {
-        Err(PecosError::Input(format!(
-            "Dummy foreign object cannot execute function: {func_name}"
-        )))
-    }
-
-    fn as_any(&self) -> &dyn Any {
-        self
-    }
-
-    fn as_any_mut(&mut self) -> &mut dyn Any {
-        self
-    }
-}
+// For when wasm feature is disabled, provide minimal trait
+#[cfg(not(feature = "wasm"))]
+pub use pecos_wasm::{DummyForeignObject, ForeignObject};