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use super::*;
use crate::module::MModule;
use crate::module::MRecordTypes;
use serde::Serialize;
use std::collections::hash_map::Entry;
use std::collections::HashMap;
use std::rc::Rc;
#[derive(PartialEq, Eq, Debug, Clone, Serialize)]
pub struct MModuleInterface<'a> {
pub record_types: &'a MRecordTypes,
pub function_signatures: Vec<MFunctionSignature>,
}
pub struct Marine {
modules: HashMap<String, MModule>,
}
impl Marine {
pub fn new() -> Self {
Self {
modules: HashMap::new(),
}
}
pub fn call<MN: AsRef<str>, FN: AsRef<str>>(
&mut self,
module_name: MN,
func_name: FN,
arguments: &[IValue],
) -> MResult<Vec<IValue>> {
self.modules.get_mut(module_name.as_ref()).map_or_else(
|| Err(MError::NoSuchModule(module_name.as_ref().to_string())),
|module| module.call(module_name.as_ref(), func_name.as_ref(), arguments),
)
}
pub fn load_module<S: Into<String>>(
&mut self,
name: S,
wasm_bytes: &[u8],
config: MModuleConfig,
) -> MResult<()> {
self.load_module_(name.into(), wasm_bytes, config)
}
fn load_module_(
&mut self,
name: String,
wasm_bytes: &[u8],
config: MModuleConfig,
) -> MResult<()> {
let prepared_wasm_bytes = crate::misc::prepare_module(wasm_bytes, config.max_heap_size)?;
let module = MModule::new(&name, &prepared_wasm_bytes, config, &self.modules)?;
match self.modules.entry(name) {
Entry::Vacant(entry) => {
entry.insert(module);
Ok(())
}
Entry::Occupied(entry) => Err(MError::NonUniqueModuleName(entry.key().clone())),
}
}
pub fn unload_module<S: AsRef<str>>(&mut self, name: S) -> MResult<()> {
self.modules
.remove(name.as_ref())
.map(|_| ())
.ok_or_else(|| MError::NoSuchModule(name.as_ref().to_string()))
}
pub fn module_wasi_state<S: AsRef<str>>(
&mut self,
module_name: S,
) -> Option<&wasmer_wasi::state::WasiState> {
self.modules
.get_mut(module_name.as_ref())
.map(|module| module.get_wasi_state())
}
pub fn interface(&self) -> impl Iterator<Item = (&str, MModuleInterface<'_>)> {
self.modules
.iter()
.map(|(module_name, module)| (module_name.as_str(), Self::get_module_interface(module)))
}
pub fn module_interface<S: AsRef<str>>(&self, module_name: S) -> Option<MModuleInterface<'_>> {
self.modules
.get(module_name.as_ref())
.map(Self::get_module_interface)
}
pub fn module_record_types<S: AsRef<str>>(&self, module_name: S) -> Option<&MRecordTypes> {
self.modules
.get(module_name.as_ref())
.map(|module| module.export_record_types())
}
pub fn module_record_type_by_id<S: AsRef<str>>(
&self,
module_name: S,
record_id: u64,
) -> Option<&Rc<IRecordType>> {
self.modules
.get(module_name.as_ref())
.and_then(|module| module.export_record_type_by_id(record_id))
}
fn get_module_interface(module: &MModule) -> MModuleInterface<'_> {
let record_types = module.export_record_types();
let function_signatures = module.get_exports_signatures().collect::<Vec<_>>();
MModuleInterface {
record_types,
function_signatures,
}
}
}
impl Default for Marine {
fn default() -> Self {
Self::new()
}
}