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interpreter: ProgramInstance exposes constructor for arbitrary env module

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Pat Hickey
2017-09-14 18:42:59 -07:00
parent debbaeee32
commit f21bf553c3
1 changed files with 18 additions and 6 deletions
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24
src/interpreter/program.rs
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@ -31,6 +31,13 @@ impl<E> ProgramInstance<E> where E: UserError {
}) })
} }
/// Create a new program instance with a custom env module
pub fn with_env_module(env_module: Arc<ModuleInstanceInterface<E>>) -> Self {
ProgramInstance {
essence: Arc::new(ProgramInstanceEssence::with_env_module(env_module)),
}
}
/// Instantiate module with validation. /// Instantiate module with validation.
pub fn add_module<'a>(&self, name: &str, module: Module, externals: Option<&'a HashMap<String, Arc<ModuleInstanceInterface<E> + 'a>>>) -> Result<Arc<ModuleInstance<E>>, Error<E>> { pub fn add_module<'a>(&self, name: &str, module: Module, externals: Option<&'a HashMap<String, Arc<ModuleInstanceInterface<E> + 'a>>>) -> Result<Arc<ModuleInstance<E>>, Error<E>> {
let mut module_instance = ModuleInstance::new(Arc::downgrade(&self.essence), name.into(), module)?; let mut module_instance = ModuleInstance::new(Arc::downgrade(&self.essence), name.into(), module)?;
@ -62,14 +69,19 @@ impl<E> ProgramInstanceEssence<E> where E: UserError {
} }
pub fn with_env_params(env_params: env::EnvParams) -> Result<Self, Error<E>> { pub fn with_env_params(env_params: env::EnvParams) -> Result<Self, Error<E>> {
let mut modules = HashMap::new(); let env_mod = env_module(env_params)?;
let env_module: Arc<ModuleInstanceInterface<E>> = Arc::new(env_module(env_params)?); Ok(ProgramInstanceEssence::with_env_module(Arc::new(env_mod)))
modules.insert("env".into(), env_module);
Ok(ProgramInstanceEssence {
modules: RwLock::new(modules),
})
} }
pub fn with_env_module(env_module: Arc<ModuleInstanceInterface<E>>) -> Self {
let mut modules = HashMap::new();
modules.insert("env".into(), env_module);
ProgramInstanceEssence {
modules: RwLock::new(modules),
}
}
/// Get module reference. /// Get module reference.
pub fn module(&self, name: &str) -> Option<Arc<ModuleInstanceInterface<E>>> { pub fn module(&self, name: &str) -> Option<Arc<ModuleInstanceInterface<E>>> {
self.modules.read().get(name).cloned() self.modules.read().get(name).cloned()