JavaScript-Embedded

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lib/JavaScript/Embedded/C/lib/duktape.c  view on Meta::CPAN

		duk_resolve_nonbound_function(thr);
		h_fun = duk_require_hobject(thr, -1); /* reject lightfuncs on purpose */
		if (!DUK_HOBJECT_IS_CALLABLE(h_fun) || !DUK_HOBJECT_IS_COMPFUNC(h_fun)) {
			goto state_error;
		}
		duk_pop(thr);
	}

#if 0
	/* This check would prevent a heap destruction time finalizer from
	 * launching a coroutine, which would ensure that during finalization
	 * 'thr' would always equal heap_thread.  Normal runtime finalizers
	 * run with ms_running == 0, i.e. outside mark-and-sweep.  See GH-2030.
	 */
	if (thr->heap->ms_running) {
		DUK_D(DUK_DPRINT("refuse Duktape.Thread.resume() when ms_running != 0"));
		goto state_error;
	}
#endif

	/*

lib/JavaScript/Embedded/C/lib/duktape.c  view on Meta::CPAN

 *  top, and will be replaced by another error value based on the return
 *  value of the error handler.
 *
 *  The helper calls duk_handle_call() recursively in protected mode.
 *  Before that call happens, no longjmps should happen; as a consequence,
 *  we must assume that the valstack contains enough temporary space for
 *  arguments and such.
 *
 *  While the error handler runs, any errors thrown will not trigger a
 *  recursive error handler call (this is implemented using a heap level
 *  flag which will "follow" through any coroutines resumed inside the
 *  error handler).  If the error handler is not callable or throws an
 *  error, the resulting error replaces the original error (for Duktape
 *  internal errors, duk_error_throw.c further substitutes this error with
 *  a DoubleError which is not ideal).  This would be easy to change and
 *  even signal to the caller.
 *
 *  The user error handler is stored in 'Duktape.errCreate' or
 *  'Duktape.errThrow' depending on whether we're augmenting the error at
 *  creation or throw time.  There are several alternatives to this approach,
 *  see doc/error-objects.rst for discussion.

lib/JavaScript/Embedded/C/lib/duktape.c  view on Meta::CPAN

	duk__handle_yield(thr, resumer, resumer->valstack_top - 2);
	thr = NULL; /* 'thr' invalidated by call */

#if 0
	thr = resumer;  /* not needed */
#endif

	DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer"));
	return DUK__RETHAND_RESTART;
#else
	/* Without coroutine support this case should never happen. */
	DUK_ERROR_INTERNAL(thr);
	DUK_WO_NORETURN(return 0;);
#endif
}

/*
 *  Executor interrupt handling
 *
 *  The handler is called whenever the interrupt countdown reaches zero
 *  (or below).  The handler must perform whatever checks are activated,

lib/JavaScript/Embedded/C/lib/duktape.c  view on Meta::CPAN

/*
 *  ECMAScript bytecode executor.
 *
 *  Resume execution for the current thread from its current activation.
 *  Returns when execution would return from the entry level activation,
 *  leaving a single return value on top of the stack.  Function calls
 *  and thread resumptions are handled internally.  If an error occurs,
 *  a longjmp() with type DUK_LJ_TYPE_THROW is called on the entry level
 *  setjmp() jmpbuf.
 *
 *  ECMAScript function calls and coroutine resumptions are handled
 *  internally (by the outer executor function) without recursive C calls.
 *  Other function calls are handled using duk_handle_call(), increasing
 *  C recursion depth.
 *
 *  Abrupt completions (= long control tranfers) are handled either
 *  directly by reconfiguring relevant stacks and restarting execution,
 *  or via a longjmp.  Longjmp-free handling is preferable for performance
 *  (especially Emscripten performance), and is used for: break, continue,
 *  and return.
 *

lib/JavaScript/Embedded/C/lib/duktape.h  view on Meta::CPAN

DUK_EXTERNAL_DECL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_idx, duk_idx_t nargs);
DUK_EXTERNAL_DECL void duk_new(duk_context *ctx, duk_idx_t nargs);
DUK_EXTERNAL_DECL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs);
DUK_EXTERNAL_DECL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, void *udata, duk_idx_t nargs, duk_idx_t nrets);

/*
 *  Thread management
 */

/* There are currently no native functions to yield/resume, due to the internal
 * limitations on coroutine handling.  These will be added later.
 */

/*
 *  Compilation and evaluation
 */

DUK_EXTERNAL_DECL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);
DUK_EXTERNAL_DECL duk_int_t duk_compile_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);

/* plain */