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/*
* Heap native function representation.
*/
#ifndef DUK_HNATIVEFUNCTION_H_INCLUDED
#define DUK_HNATIVEFUNCTION_H_INCLUDED
#define DUK_HNATIVEFUNCTION_NARGS_VARARGS ((duk_int16_t) -1)
#define DUK_HNATIVEFUNCTION_NARGS_MAX ((duk_int16_t) 0x7fff)
struct duk_hnativefunction {
/* shared object part */
duk_hobject obj;
duk_c_function func;
duk_int16_t nargs;
duk_int16_t magic;
/* The 'magic' field allows an opaque 16-bit field to be accessed by the
* Duktape/C function. This allows, for instance, the same native function
* to be used for a set of very similar functions, with the 'magic' field
* providing the necessary non-argument flags / values to guide the behavior
* of the native function. The value is signed on purpose: it is easier to
* convert a signed value to unsigned (simply AND with 0xffff) than vice
* versa.
*
* Note: cannot place nargs/magic into the heaphdr flags, because
* duk_hobject takes almost all flags already (and needs the spare).
*/
};
#endif /* DUK_HNATIVEFUNCTION_H_INCLUDED */
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