diff options
Diffstat (limited to 'src/js/fromjs.nim')
| -rw-r--r-- | src/js/fromjs.nim | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/js/fromjs.nim b/src/js/fromjs.nim index 426b04b4..bddaa2e1 100644 --- a/src/js/fromjs.nim +++ b/src/js/fromjs.nim @@ -5,6 +5,7 @@ import tables import unicode import bindings/quickjs +import io/promise import js/arraybuffer import js/dict import js/error @@ -449,6 +450,28 @@ proc fromJSArrayBufferView(ctx: JSContext, val: JSValue): ) return ok(view) +proc promiseThenCallback(ctx: JSContext, this_val: JSValue, argc: cint, + argv: ptr JSValue, magic: cint, func_data: ptr JSValue): JSValue {.cdecl.} = + let op = JS_GetOpaque(func_data[], JS_GetClassID(func_data[])) + let p = cast[EmptyPromise](op) + p.resolve() + GC_unref(p) + return JS_UNDEFINED + +proc fromJSEmptyPromise(ctx: JSContext, val: JSValue): JSResult[EmptyPromise] = + if not JS_IsObject(val): + return err(newTypeError("Value is not an object")) + #TODO I have a feeling this leaks memory in some cases :( + var p = EmptyPromise() + GC_ref(p) + var tmp = JS_NewObject(ctx) + JS_SetOpaque(tmp, cast[pointer](p)) + var fun = JS_NewCFunctionData(ctx, promiseThenCallback, 0, 0, 1, addr tmp) + let res = JS_Invoke(ctx, val, ctx.getOpaque().str_refs[THEN], 1, addr fun) + if JS_IsException(res): + return err() + return ok(p) + type FromJSAllowedT = (object and not (Result|Option|Table|JSValue|JSDict| JSArrayBuffer|JSArrayBufferView|JSUint8Array)) @@ -482,6 +505,8 @@ proc fromJS*[T](ctx: JSContext, val: JSValue): JSResult[T] = return fromJSEnum[T](ctx, val) elif T is JSValue: return ok(val) + elif T is EmptyPromise: + return fromJSEmptyPromise(ctx, val) elif T is ref object: return fromJSObject[T](ctx, val) elif T is void: |