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import { sendSync } from "./dispatch_json.ts";
import { OP_OPEN_PLUGIN } from "./dispatch.ts";
import { core } from "./core.ts";
export interface AsyncHandler {
(msg: Uint8Array): void;
}
interface PluginOp {
dispatch(
control: Uint8Array,
zeroCopy?: ArrayBufferView | null
): Uint8Array | null;
setAsyncHandler(handler: AsyncHandler): void;
}
class PluginOpImpl implements PluginOp {
constructor(private readonly opId: number) {}
dispatch(
control: Uint8Array,
zeroCopy?: ArrayBufferView | null
): Uint8Array | null {
return core.dispatch(this.opId, control, zeroCopy);
}
setAsyncHandler(handler: AsyncHandler): void {
core.setAsyncHandler(this.opId, handler);
}
}
// TODO(afinch7): add close method.
interface Plugin {
ops: {
[name: string]: PluginOp;
};
}
class PluginImpl implements Plugin {
private _ops: { [name: string]: PluginOp } = {};
constructor(private readonly rid: number, ops: { [name: string]: number }) {
for (const op in ops) {
this._ops[op] = new PluginOpImpl(ops[op]);
}
}
get ops(): { [name: string]: PluginOp } {
return Object.assign({}, this._ops);
}
}
interface OpenPluginResponse {
rid: number;
ops: {
[name: string]: number;
};
}
export function openPlugin(filename: string): Plugin {
const response: OpenPluginResponse = sendSync(OP_OPEN_PLUGIN, {
filename
});
return new PluginImpl(response.rid, response.ops);
}
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