97f10e865f
NostrScript is a WebAssembly implementation that interacts with Damus. It enables dynamic scripting that can be used to power custom list views, enabling pluggable algorithms. The web has JavaScript, Damus has NostrScript. NostrScripts can be written in any language that compiles to WASM. This commit adds a WASM interpreter I've written as a mostly-single C file for portability and embeddability. In the future we could JIT-compile these for optimal performance if NostrScripts get large and complicated. For now an interpreter is simple enough for algorithm list view plugins. Changelog-Added: Add initial NostrScript implementation Signed-off-by: William Casarin <jb55@jb55.com>
78 lines
1.8 KiB
TypeScript
78 lines
1.8 KiB
TypeScript
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// these are handles not actual pointers
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export type Note = i32;
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export type Event = i32;
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export enum EventType {
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OK = 1,
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NOTE = 2,
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NOTICE = 3,
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EOSE = 4
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}
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enum Command {
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POOL_SEND = 1,
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ADD_RELAY = 2,
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EVENT_AWAIT = 3,
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EVENT_GET_TYPE = 4,
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EVENT_GET_NOTE = 5,
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NOTE_GET_KIND = 6,
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NOTE_GET_CONTENT = 7,
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NOTE_GET_CONTENT_LENGTH = 8,
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}
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declare function nostr_log(log: string): void;
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declare function nostr_cmd(cmd: i32, val: i32, len: i32): i32;
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declare function nostr_pool_send_to(req: string, req_len: i32, to: string, to_len: i32): void;
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export function pool_send(req: string): void {
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nostr_cmd(Command.POOL_SEND, changetype<i32>(req), req.length)
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}
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export function pool_send_to(req: string, to: string): void {
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return nostr_pool_send_to(req, req.length, to, to.length)
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}
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export function pool_add_relay(relay: string): boolean {
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let ok = nostr_cmd(Command.ADD_RELAY, changetype<i32>(relay), relay.length)
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return ok as boolean
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}
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export function event_await(subid: string): Event {
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return nostr_cmd(Command.EVENT_AWAIT, changetype<i32>(subid), subid.length) as i32
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}
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export function event_get_type(ev: Event): EventType {
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if (!ev) return 0;
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return nostr_cmd(Command.EVENT_GET_TYPE, ev, 0) as EventType
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}
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export function event_get_note(ev: Event): Note {
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if (!ev) return 0;
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return nostr_cmd(Command.EVENT_GET_NOTE, ev, 0)
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}
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export function note_get_kind(note: Note): u32 {
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if (!note) return 0;
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return nostr_cmd(Command.NOTE_GET_KIND, note, 0);
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}
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function note_get_content_length(): i32 {
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return nostr_cmd(Command.NOTE_GET_CONTENT_LENGTH, note, 0)
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}
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export function log(log: string): void {
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nostr_log(log)
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}
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export function note_get_content(): string {
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let res = nostr_cmd(Command.NOTE_GET_CONTENT, note, 0);
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if (!res) return "";
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let len = note_get_content_length()
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let codes = TypedArray.wrap()
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return String.fromCharCodes(codes)
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}
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