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/*
* Copyright (C) 2020-2021 Jo-Philipp Wich <jo@mein.io>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __OBJECT_H_
#define __OBJECT_H_
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <regex.h>
#ifdef JSONC
#include <json.h>
#else
#include <json-c/json.h>
#endif
#include "source.h"
#include "chunk.h"
#include "util.h"
typedef enum {
UC_OBJ_INVAL,
UC_OBJ_UPVAL,
UC_OBJ_FUNCTION,
UC_OBJ_CLOSURE,
UC_OBJ_CFUNCTION,
UC_OBJ_REGEXP,
UC_OBJ_PROTOTYPE,
UC_OBJ_RESSOURCE
} uc_objtype_t;
typedef struct {
uc_objtype_t type;
json_object *jso;
} uc_objhdr;
typedef struct uc_upvalref {
uc_objhdr header;
size_t slot;
bool closed;
json_object *value;
struct uc_upvalref *next;
} uc_upvalref;
typedef struct {
uc_objhdr header;
char *name;
bool arrow, vararg;
size_t nargs;
size_t nupvals;
size_t srcpos;
uc_chunk chunk;
uc_source *source;
} uc_function;
typedef struct {
uc_objhdr header;
uc_function *function;
uc_upvalref **upvals;
bool is_arrow;
} uc_closure;
struct uc_vm;
typedef json_object *(*uc_cfn_ptr)(struct uc_vm *, size_t);
typedef struct {
uc_objhdr header;
char *name;
uc_cfn_ptr cfn;
} uc_cfunction;
typedef struct {
uc_objhdr header;
regex_t re;
char *pattern;
bool icase, newline, global;
} uc_regexp;
struct uc_prototype {
uc_objhdr header;
struct uc_prototype *parent;
};
typedef struct uc_prototype uc_prototype;
typedef struct {
uc_objhdr header;
size_t type;
void *data;
} uc_ressource;
typedef struct {
const char *name;
uc_prototype *proto;
void (*free)(void *);
} uc_ressource_type;
uc_declare_vector(uc_ressource_types, uc_ressource_type);
uc_upvalref *uc_upvalref_new(size_t slot);
uc_function *uc_function_new(const char *name, size_t line, uc_source *source);
uc_closure *uc_closure_new(uc_function *function, bool arrow_fn);
uc_cfunction *uc_cfunction_new(const char *name, uc_cfn_ptr cfn);
uc_regexp *uc_regexp_new(const char *pattern, bool icase, bool newline, bool global, char **err);
uc_prototype *uc_prototype_new(uc_prototype *parent);
uc_prototype *uc_protoref_new(json_object *value, uc_prototype *proto);
json_object *uc_prototype_lookup(uc_prototype *proto, const char *key);
uc_ressource_type *uc_ressource_type_add(const char *name, uc_prototype *proto, void (*freefn)(void *));
uc_ressource_type *uc_ressource_type_lookup(const char *name);
uc_ressource *uc_ressource_new(json_object *jso, uc_ressource_type *type, void *data);
uc_prototype *uc_ressource_prototype(json_object *jso);
void **uc_ressource_dataptr(json_object *jso, const char *name);
size_t uc_function_get_srcpos(uc_function *function, size_t off);
static inline uc_objtype_t
uc_object_type(json_object *jso)
{
uc_objhdr *hdr = json_object_get_userdata(jso);
return hdr ? hdr->type : UC_OBJ_INVAL;
}
static inline bool
uc_object_is_type(json_object *jso, uc_objtype_t type)
{
return uc_object_type(jso) == type;
}
static inline uc_upvalref *
uc_object_as_upvalref(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_function *
uc_object_as_function(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_closure *
uc_object_as_closure(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_cfunction *
uc_object_as_cfunction(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_regexp *
uc_object_as_regexp(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_prototype *
uc_object_as_prototype(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline uc_ressource *
uc_object_as_ressource(json_object *jso)
{
return json_object_get_userdata(jso);
}
static inline bool
uc_object_is_callable(json_object *jso)
{
switch (uc_object_type(jso)) {
case UC_OBJ_CLOSURE:
case UC_OBJ_CFUNCTION:
return true;
default:
return false;
}
}
#endif /* __OBJECT_H_ */
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