optional.h
8755416ca476master

optional.h
View Options

			#ifndef SV_OPTIONAL_H
			#define SV_OPTIONAL_H

			#include "silver/engine.h"
			#include "property.h"

			static inline jsval_t sv_op_get_field_opt(sv_vm_t vm, ant_t js, sv_func_t func, uint8_t ip) {
			uint32_t idx = sv_get_u32(ip + 1);
			sv_atom_t *a = &func->atoms[idx];
			jsval_t obj = vm->stack[--vm->sp];
			uint8_t t = vtype(obj);
			if (t == T_NULL \|\| t == T_UNDEF) {
			vm->stack[vm->sp++] = js_mkundef();
			return js_mkundef();
			} else {
			jsval_t res = sv_prop_get_at(js, obj, a->str, a->len, func, ip);
			if (is_err(res)) return res;
			vm->stack[vm->sp++] = res;
			return js_mkundef();
			}
			}

			static inline jsval_t sv_op_get_elem_opt(sv_vm_t vm, ant_t js, sv_func_t func, uint8_t ip) {
			jsval_t key = vm->stack[--vm->sp];
			jsval_t obj = vm->stack[--vm->sp];
			uint8_t t = vtype(obj);
			if (t == T_NULL \|\| t == T_UNDEF) {
			vm->stack[vm->sp++] = js_mkundef();
			return js_mkundef();
			}
			vm->stack[vm->sp++] = obj;
			vm->stack[vm->sp++] = key;
			return sv_op_get_elem(vm, js, func, ip);
			}

			#endif