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/*
* Copyright (C) 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 __TYPES_H_
#define __TYPES_H_
#include <stdbool.h>
#include <stdint.h>
#include <regex.h>
#include <json-c/json.h>
#include "util.h"
/* Value types and generic value header */
typedef enum uc_type_t {
UC_NULL,
UC_INTEGER,
UC_BOOLEAN,
UC_STRING,
UC_DOUBLE,
UC_ARRAY,
UC_OBJECT,
UC_REGEXP,
UC_FUNCTION,
UC_CFUNCTION,
UC_CLOSURE,
UC_UPVALUE,
UC_RESSOURCE
} uc_type_t;
typedef struct uc_value_t {
uint32_t type:4;
uint32_t mark:1;
uint32_t u64:1;
uint32_t refcount:26;
} uc_value_t;
/* Constant list defintions */
typedef struct {
size_t isize;
size_t dsize;
uint64_t *index;
char *data;
} uc_value_list;
/* Source buffer defintions */
uc_declare_vector(uc_lineinfo, uint8_t);
typedef struct {
char *filename, *buffer;
FILE *fp;
size_t usecount, off;
uc_lineinfo lineinfo;
} uc_source;
/* Bytecode chunk defintions */
typedef struct {
size_t from, to, target, slot;
} uc_ehrange;
typedef struct {
size_t from, to, slot, nameidx;
} uc_varrange;
uc_declare_vector(uc_ehranges, uc_ehrange);
uc_declare_vector(uc_variables, uc_varrange);
uc_declare_vector(uc_offsetinfo, uint8_t);
typedef struct {
size_t count;
uint8_t *entries;
uc_value_list constants;
uc_ehranges ehranges;
struct {
uc_variables variables;
uc_value_list varnames;
uc_offsetinfo offsets;
} debuginfo;
} uc_chunk;
/* Value type structures */
typedef struct uc_weakref_t {
struct uc_weakref_t *prev;
struct uc_weakref_t *next;
} uc_weakref_t;
typedef struct {
uc_value_t header;
double dbl;
} uc_double_t;
typedef struct {
uc_value_t header;
union {
int64_t s64;
uint64_t u64;
} i;
} uc_integer_t;
typedef struct {
uc_value_t header;
size_t length;
char str[];
} uc_string_t;
typedef struct {
uc_value_t header;
uc_weakref_t ref;
size_t count;
uc_value_t *proto;
uc_value_t **entries;
} uc_array_t;
typedef struct {
uc_value_t header;
uc_weakref_t ref;
uc_value_t *proto;
struct lh_table *table;
} uc_object_t;
typedef struct {
uc_value_t header;
regex_t regexp;
bool icase, newline, global;
char source[];
} uc_regexp_t;
typedef struct {
uc_value_t header;
bool arrow, vararg, strict;
size_t nargs;
size_t nupvals;
size_t srcpos;
uc_chunk chunk;
uc_source *source;
char name[];
} uc_function_t;
typedef struct uc_upvalref_t {
uc_value_t header;
size_t slot;
bool closed;
uc_value_t *value;
struct uc_upvalref_t *next;
} uc_upvalref_t;
typedef struct {
uc_value_t header;
uc_weakref_t ref;
bool is_arrow;
uc_function_t *function;
uc_upvalref_t **upvals;
} uc_closure_t;
typedef struct uc_vm uc_vm;
typedef uc_value_t *(*uc_cfn_ptr_t)(uc_vm *, size_t);
typedef struct {
uc_value_t header;
uc_cfn_ptr_t cfn;
char name[];
} uc_cfunction_t;
typedef struct {
const char *name;
uc_value_t *proto;
void (*free)(void *);
} uc_ressource_type_t;
typedef struct {
uc_value_t header;
uc_ressource_type_t *type;
void *data;
} uc_ressource_t;
uc_declare_vector(uc_ressource_types_t, uc_ressource_type_t *);
/* Parser definitions */
typedef struct {
bool lstrip_blocks;
bool trim_blocks;
bool strict_declarations;
bool raw_mode;
} uc_parse_config;
/* VM definitions */
typedef enum {
EXCEPTION_NONE,
EXCEPTION_SYNTAX,
EXCEPTION_RUNTIME,
EXCEPTION_TYPE,
EXCEPTION_REFERENCE,
EXCEPTION_USER
} uc_exception_type_t;
typedef struct {
uc_exception_type_t type;
uc_value_t *stacktrace;
char *message;
} uc_exception;
typedef struct {
uint8_t *ip;
uc_closure_t *closure;
uc_cfunction_t *cfunction;
size_t stackframe;
uc_value_t *ctx;
bool mcall, strict;
} uc_callframe;
uc_declare_vector(uc_callframes, uc_callframe);
uc_declare_vector(uc_stack, uc_value_t *);
typedef struct printbuf uc_stringbuf_t;
struct uc_vm {
uc_stack stack;
uc_exception exception;
uc_callframes callframes;
uc_upvalref_t *open_upvals;
uc_parse_config *config;
uc_value_t *globals;
uc_source *sources;
uc_weakref_t values;
uc_ressource_types_t restypes;
union {
uint32_t u32;
int32_t s32;
uint16_t u16;
int16_t s16;
uint8_t u8;
int8_t s8;
} arg;
size_t spread_values;
uint8_t trace;
uc_stringbuf_t *strbuf;
FILE *output;
};
/* Value API */
void ucv_free(uc_value_t *, bool);
void ucv_put(uc_value_t *);
uc_value_t *ucv_get(uc_value_t *uv);
uc_type_t ucv_type(uc_value_t *);
const char *ucv_typename(uc_value_t *);
uc_value_t *ucv_boolean_new(bool);
bool ucv_boolean_get(uc_value_t *);
uc_value_t *ucv_string_new(const char *);
uc_value_t *ucv_string_new_length(const char *, size_t);
size_t ucv_string_length(uc_value_t *);
char *_ucv_string_get(uc_value_t **);
#define ucv_string_get(uv) _ucv_string_get((uc_value_t **)&uv)
uc_stringbuf_t *ucv_stringbuf_new(void);
uc_value_t *ucv_stringbuf_finish(uc_stringbuf_t *);
void _ucv_stringbuf_append(uc_stringbuf_t *, const char *, size_t);
#define _ucv_is_literal(str) ("" str)
#define ucv_stringbuf_append(buf, str) _ucv_stringbuf_append(buf, _ucv_is_literal(str), sizeof(str) - 1)
#define ucv_stringbuf_addstr(buf, str, len) _ucv_stringbuf_append(buf, str, len)
#define ucv_stringbuf_printf(buf, fmt, ...) sprintbuf(buf, fmt, __VA_ARGS__)
uc_value_t *ucv_int64_new(int64_t);
uc_value_t *ucv_uint64_new(uint64_t);
int64_t ucv_int64_get(uc_value_t *);
uint64_t ucv_uint64_get(uc_value_t *);
uc_value_t *ucv_double_new(double);
double ucv_double_get(uc_value_t *);
uc_value_t *ucv_array_new(uc_vm *);
uc_value_t *ucv_array_new_length(uc_vm *, size_t);
uc_value_t *ucv_array_get(uc_value_t *, size_t);
uc_value_t *ucv_array_pop(uc_value_t *);
uc_value_t *ucv_array_push(uc_value_t *, uc_value_t *);
uc_value_t *ucv_array_shift(uc_value_t *);
uc_value_t *ucv_array_unshift(uc_value_t *, uc_value_t *);
void ucv_array_sort(uc_value_t *, int (*)(const void *, const void *));
bool ucv_array_delete(uc_value_t *, size_t, size_t);
bool ucv_array_set(uc_value_t *, size_t, uc_value_t *);
size_t ucv_array_length(uc_value_t *);
uc_value_t *ucv_object_new(uc_vm *);
uc_value_t *ucv_object_get(uc_value_t *, const char *, bool *);
bool ucv_object_add(uc_value_t *, const char *, uc_value_t *);
bool ucv_object_delete(uc_value_t *, const char *);
size_t ucv_object_length(uc_value_t *);
#define ucv_object_foreach(obj, key, val) \
char *key = NULL; \
uc_value_t *val = NULL; \
struct lh_entry *entry##key; \
struct lh_entry *entry_next##key = NULL; \
for (entry##key = (ucv_type(obj) == UC_OBJECT) ? ((uc_object_t *)obj)->table->head : NULL; \
(entry##key ? (key = (char *)lh_entry_k(entry##key), \
val = (uc_value_t *)lh_entry_v(entry##key), \
entry_next##key = entry##key->next, entry##key) \
: 0); \
entry##key = entry_next##key)
uc_value_t *ucv_function_new(const char *, size_t, uc_source *);
size_t ucv_function_srcpos(uc_value_t *, size_t);
uc_value_t *ucv_cfunction_new(const char *, uc_cfn_ptr_t);
uc_value_t *ucv_closure_new(uc_vm *, uc_function_t *, bool);
uc_ressource_type_t *ucv_ressource_type_add(uc_vm *, const char *, uc_value_t *, void (*)(void *));
uc_ressource_type_t *ucv_ressource_type_lookup(uc_vm *, const char *);
uc_value_t *ucv_ressource_new(uc_ressource_type_t *, void *);
void **ucv_ressource_dataptr(uc_value_t *, const char *);
uc_value_t *ucv_regexp_new(const char *, bool, bool, bool, char **);
uc_value_t *ucv_upvalref_new(size_t);
uc_value_t *ucv_prototype_get(uc_value_t *);
bool ucv_prototype_set(uc_value_t *, uc_value_t *);
uc_value_t *ucv_property_get(uc_value_t *, const char *);
uc_value_t *ucv_from_json(uc_vm *, json_object *);
json_object *ucv_to_json(uc_value_t *);
char *ucv_to_string(uc_vm *, uc_value_t *);
char *ucv_to_jsonstring_formatted(uc_vm *, uc_value_t *, char, size_t);
void ucv_to_stringbuf_formatted(uc_vm *, uc_stringbuf_t *, uc_value_t *, size_t, char, size_t);
#define ucv_to_jsonstring(vm, val) ucv_to_jsonstring_formatted(vm, val, '\1', 0)
#define ucv_to_stringbuf(vm, buf, val, json) ucv_to_stringbuf_formatted(vm, buf, val, 0, json ? '\1' : '\0', 0)
static inline bool
ucv_is_callable(uc_value_t *uv)
{
switch (ucv_type(uv)) {
case UC_CLOSURE:
case UC_CFUNCTION:
return true;
default:
return false;
}
}
static inline bool
ucv_is_arrowfn(uc_value_t *uv)
{
uc_closure_t *closure = (uc_closure_t *)uv;
return (ucv_type(uv) == UC_CLOSURE && closure->is_arrow);
}
static inline bool
ucv_is_u64(uc_value_t *uv)
{
return (((uintptr_t)uv & 3) == 0 && uv != NULL && uv->u64 == true);
}
static inline bool
ucv_is_scalar(uc_value_t *uv)
{
switch (ucv_type(uv)) {
case UC_NULL:
case UC_BOOLEAN:
case UC_DOUBLE:
case UC_INTEGER:
case UC_STRING:
return true;
default:
return false;
}
}
static inline bool
ucv_is_marked(uc_value_t *uv)
{
return (((uintptr_t)uv & 3) == 0 && uv != NULL && uv->mark == true);
}
static inline void
ucv_set_mark(uc_value_t *uv)
{
if (((uintptr_t)uv & 3) == 0 && uv != NULL)
uv->mark = true;
}
static inline void
ucv_clear_mark(uc_value_t *uv)
{
if (((uintptr_t)uv & 3) == 0 && uv != NULL)
uv->mark = false;
}
bool ucv_equal(uc_value_t *, uc_value_t *);
void ucv_gc(uc_vm *, bool);
#endif /* __TYPES_H_ */
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