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Add JS_IsArrayBuffer()

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Unlike JS_GetArrayBuffer() it does not throw an exception
 if `val` is not an array buffer.
This commit is contained in:
Dmitry Volyntsev 2024-05-08 15:01:35 -07:00
parent 2df2bcf908
commit 696fadb3d5
2 changed files with 15 additions and 0 deletions
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14
quickjs.c
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@ -53074,6 +53074,20 @@ JSValue JS_NewArrayBufferCopy(JSContext *ctx, const uint8_t *buf, size_t len)
TRUE); TRUE);
} }
/* return -1 if exception (proxy case) or TRUE/FALSE */
int JS_IsArrayBuffer(JSContext *ctx, JSValueConst val)
{
JSObject *p;
if (js_resolve_proxy(ctx, &val, TRUE))
return -1;
if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT)
return FALSE;
p = JS_VALUE_GET_OBJ(val);
return p->class_id == JS_CLASS_ARRAY_BUFFER ||
p->class_id == JS_CLASS_SHARED_ARRAY_BUFFER;
}
static JSValue js_array_buffer_constructor(JSContext *ctx, static JSValue js_array_buffer_constructor(JSContext *ctx,
JSValueConst new_target, JSValueConst new_target,
int argc, JSValueConst *argv) int argc, JSValueConst *argv)

1
quickjs.h
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@ -828,6 +828,7 @@ JSValue JS_NewArrayBuffer(JSContext *ctx, uint8_t *buf, size_t len,
JSFreeArrayBufferDataFunc *free_func, void *opaque, JSFreeArrayBufferDataFunc *free_func, void *opaque,
JS_BOOL is_shared); JS_BOOL is_shared);
JSValue JS_NewArrayBufferCopy(JSContext *ctx, const uint8_t *buf, size_t len); JSValue JS_NewArrayBufferCopy(JSContext *ctx, const uint8_t *buf, size_t len);
int JS_IsArrayBuffer(JSContext *ctx, JSValueConst val);
void JS_DetachArrayBuffer(JSContext *ctx, JSValueConst obj); void JS_DetachArrayBuffer(JSContext *ctx, JSValueConst obj);
uint8_t *JS_GetArrayBuffer(JSContext *ctx, size_t *psize, JSValueConst obj); uint8_t *JS_GetArrayBuffer(JSContext *ctx, size_t *psize, JSValueConst obj);