mirrors/quickjs
1
0
Fork 0
mirror of https://github.com/bellard/quickjs synced 2024-11-30 17:43:09 +03:00
Code Issues Packages Projects Releases Wiki Activity
1722758717
quickjs/quickjs.h
bellard 1722758717 2020-04-12 release
2020-09-06 19:04:20 +02:00

1010 lines
39 KiB
C
Raw Blame History

/*
* QuickJS Javascript Engine
*
* Copyright (c) 2017-2020 Fabrice Bellard
* Copyright (c) 2017-2020 Charlie Gordon
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef QUICKJS_H
#define QUICKJS_H
#include <stdio.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__GNUC__) || defined(__clang__)
#define js_likely(x) __builtin_expect(!!(x), 1)
#define js_unlikely(x) __builtin_expect(!!(x), 0)
#define js_force_inline inline __attribute__((always_inline))
#define __js_printf_like(f, a) __attribute__((format(printf, f, a)))
#else
#define js_likely(x) (x)
#define js_unlikely(x) (x)
#define js_force_inline inline
#define __js_printf_like(a, b)
#endif
#define JS_BOOL int
typedef struct JSRuntime JSRuntime;
typedef struct JSContext JSContext;
typedef struct JSObject JSObject;
typedef struct JSClass JSClass;
typedef uint32_t JSClassID;
typedef uint32_t JSAtom;
#if INTPTR_MAX >= INT64_MAX
#define JS_PTR64
#define JS_PTR64_DEF(a) a
#else
#define JS_PTR64_DEF(a)
#endif
#ifndef JS_PTR64
#define JS_NAN_BOXING
#endif
enum {
/* all tags with a reference count are negative */
JS_TAG_FIRST = -11, /* first negative tag */
JS_TAG_BIG_DECIMAL = -11,
JS_TAG_BIG_INT = -10,
JS_TAG_BIG_FLOAT = -9,
JS_TAG_SYMBOL = -8,
JS_TAG_STRING = -7,
JS_TAG_MODULE = -3, /* used internally */
JS_TAG_FUNCTION_BYTECODE = -2, /* used internally */
JS_TAG_OBJECT = -1,
JS_TAG_INT = 0,
JS_TAG_BOOL = 1,
JS_TAG_NULL = 2,
JS_TAG_UNDEFINED = 3,
JS_TAG_UNINITIALIZED = 4,
JS_TAG_CATCH_OFFSET = 5,
JS_TAG_EXCEPTION = 6,
JS_TAG_FLOAT64 = 7,
/* any larger tag is FLOAT64 if JS_NAN_BOXING */
};
typedef struct JSRefCountHeader {
int ref_count;
} JSRefCountHeader;
#define JS_FLOAT64_NAN NAN
#ifdef CONFIG_CHECK_JSVALUE
/* JSValue consistency : it is not possible to run the code in this
mode, but it is useful to detect simple reference counting
errors. It would be interesting to modify a static C analyzer to
handle specific annotations (clang has such annotations but only
for objective C) */
typedef struct __JSValue *JSValue;
typedef const struct __JSValue *JSValueConst;
#define JS_VALUE_GET_TAG(v) (int)((uintptr_t)(v) & 0xf)
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
#define JS_VALUE_GET_NORM_TAG(v) JS_VALUE_GET_TAG(v)
#define JS_VALUE_GET_INT(v) (int)((intptr_t)(v) >> 4)
#define JS_VALUE_GET_BOOL(v) JS_VALUE_GET_INT(v)
#define JS_VALUE_GET_FLOAT64(v) (double)JS_VALUE_GET_INT(v)
#define JS_VALUE_GET_PTR(v) (void *)((intptr_t)(v) & ~0xf)
#define JS_MKVAL(tag, val) (JSValue)(intptr_t)(((val) << 4) | (tag))
#define JS_MKPTR(tag, p) (JSValue)((intptr_t)(p) | (tag))
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)(tag) == JS_TAG_FLOAT64)
#define JS_NAN JS_MKVAL(JS_TAG_FLOAT64, 1)
static inline JSValue __JS_NewFloat64(JSContext *ctx, double d)
{
return JS_MKVAL(JS_TAG_FLOAT64, (int)d);
}
static inline JS_BOOL JS_VALUE_IS_NAN(JSValue v)
{
return 0;
}
#elif defined(JS_NAN_BOXING)
typedef uint64_t JSValue;
#define JSValueConst JSValue
#define JS_VALUE_GET_TAG(v) (int)((v) >> 32)
#define JS_VALUE_GET_INT(v) (int)(v)
#define JS_VALUE_GET_BOOL(v) (int)(v)
#define JS_VALUE_GET_PTR(v) (void *)(intptr_t)(v)
#define JS_MKVAL(tag, val) (((uint64_t)(tag) << 32) | (uint32_t)(val))
#define JS_MKPTR(tag, ptr) (((uint64_t)(tag) << 32) | (uintptr_t)(ptr))
#define JS_FLOAT64_TAG_ADDEND (0x7ff80000 - JS_TAG_FIRST + 1) /* quiet NaN encoding */
static inline double JS_VALUE_GET_FLOAT64(JSValue v)
{
union {
JSValue v;
double d;
} u;
u.v = v;
u.v += (uint64_t)JS_FLOAT64_TAG_ADDEND << 32;
return u.d;
}
#define JS_NAN (0x7ff8000000000000 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32))
static inline JSValue __JS_NewFloat64(JSContext *ctx, double d)
{
union {
double d;
uint64_t u64;
} u;
JSValue v;
u.d = d;
/* normalize NaN */
if (js_unlikely((u.u64 & 0x7fffffffffffffff) > 0x7ff0000000000000))
v = JS_NAN;
else
v = u.u64 - ((uint64_t)JS_FLOAT64_TAG_ADDEND << 32);
return v;
}
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)((tag) - JS_TAG_FIRST) >= (JS_TAG_FLOAT64 - JS_TAG_FIRST))
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
static inline int JS_VALUE_GET_NORM_TAG(JSValue v)
{
uint32_t tag;
tag = JS_VALUE_GET_TAG(v);
if (JS_TAG_IS_FLOAT64(tag))
return JS_TAG_FLOAT64;
else
return tag;
}
static inline JS_BOOL JS_VALUE_IS_NAN(JSValue v)
{
uint32_t tag;
tag = JS_VALUE_GET_TAG(v);
return tag == (JS_NAN >> 32);
}
#else /* !JS_NAN_BOXING */
typedef union JSValueUnion {
int32_t int32;
double float64;
void *ptr;
} JSValueUnion;
typedef struct JSValue {
JSValueUnion u;
int64_t tag;
} JSValue;
#define JSValueConst JSValue
#define JS_VALUE_GET_TAG(v) ((int32_t)(v).tag)
/* same as JS_VALUE_GET_TAG, but return JS_TAG_FLOAT64 with NaN boxing */
#define JS_VALUE_GET_NORM_TAG(v) JS_VALUE_GET_TAG(v)
#define JS_VALUE_GET_INT(v) ((v).u.int32)
#define JS_VALUE_GET_BOOL(v) ((v).u.int32)
#define JS_VALUE_GET_FLOAT64(v) ((v).u.float64)
#define JS_VALUE_GET_PTR(v) ((v).u.ptr)
#define JS_MKVAL(tag, val) (JSValue){ (JSValueUnion){ .int32 = val }, tag }
#define JS_MKPTR(tag, p) (JSValue){ (JSValueUnion){ .ptr = p }, tag }
#define JS_TAG_IS_FLOAT64(tag) ((unsigned)(tag) == JS_TAG_FLOAT64)
#define JS_NAN (JSValue){ .u.float64 = JS_FLOAT64_NAN, JS_TAG_FLOAT64 }
static inline JSValue __JS_NewFloat64(JSContext *ctx, double d)
{
JSValue v;
v.tag = JS_TAG_FLOAT64;
v.u.float64 = d;
return v;
}
static inline JS_BOOL JS_VALUE_IS_NAN(JSValue v)
{
union {
double d;
uint64_t u64;
} u;
if (v.tag != JS_TAG_FLOAT64)
return 0;
u.d = v.u.float64;
return (u.u64 & 0x7fffffffffffffff) > 0x7ff0000000000000;
}
#endif /* !JS_NAN_BOXING */
#define JS_VALUE_IS_BOTH_INT(v1, v2) ((JS_VALUE_GET_TAG(v1) | JS_VALUE_GET_TAG(v2)) == 0)
#define JS_VALUE_IS_BOTH_FLOAT(v1, v2) (JS_TAG_IS_FLOAT64(JS_VALUE_GET_TAG(v1)) && JS_TAG_IS_FLOAT64(JS_VALUE_GET_TAG(v2)))
#define JS_VALUE_GET_OBJ(v) ((JSObject *)JS_VALUE_GET_PTR(v))
#define JS_VALUE_GET_STRING(v) ((JSString *)JS_VALUE_GET_PTR(v))
#define JS_VALUE_HAS_REF_COUNT(v) ((unsigned)JS_VALUE_GET_TAG(v) >= (unsigned)JS_TAG_FIRST)
/* special values */
#define JS_NULL JS_MKVAL(JS_TAG_NULL, 0)
#define JS_UNDEFINED JS_MKVAL(JS_TAG_UNDEFINED, 0)
#define JS_FALSE JS_MKVAL(JS_TAG_BOOL, 0)
#define JS_TRUE JS_MKVAL(JS_TAG_BOOL, 1)
#define JS_EXCEPTION JS_MKVAL(JS_TAG_EXCEPTION, 0)
#define JS_UNINITIALIZED JS_MKVAL(JS_TAG_UNINITIALIZED, 0)
/* flags for object properties */
#define JS_PROP_CONFIGURABLE (1 << 0)
#define JS_PROP_WRITABLE (1 << 1)
#define JS_PROP_ENUMERABLE (1 << 2)
#define JS_PROP_C_W_E (JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE | JS_PROP_ENUMERABLE)
#define JS_PROP_LENGTH (1 << 3) /* used internally in Arrays */
#define JS_PROP_TMASK (3 << 4) /* mask for NORMAL, GETSET, VARREF, AUTOINIT */
#define JS_PROP_NORMAL (0 << 4)
#define JS_PROP_GETSET (1 << 4)
#define JS_PROP_VARREF (2 << 4) /* used internally */
#define JS_PROP_AUTOINIT (3 << 4) /* used internally */
/* flags for JS_DefineProperty */
#define JS_PROP_HAS_SHIFT 8
#define JS_PROP_HAS_CONFIGURABLE (1 << 8)
#define JS_PROP_HAS_WRITABLE (1 << 9)
#define JS_PROP_HAS_ENUMERABLE (1 << 10)
#define JS_PROP_HAS_GET (1 << 11)
#define JS_PROP_HAS_SET (1 << 12)
#define JS_PROP_HAS_VALUE (1 << 13)
/* throw an exception if false would be returned
(JS_DefineProperty/JS_SetProperty) */
#define JS_PROP_THROW (1 << 14)
/* throw an exception if false would be returned in strict mode
(JS_SetProperty) */
#define JS_PROP_THROW_STRICT (1 << 15)
#define JS_PROP_NO_ADD (1 << 16) /* internal use */
#define JS_PROP_NO_EXOTIC (1 << 17) /* internal use */
#define JS_DEFAULT_STACK_SIZE (256 * 1024)
/* JS_Eval() flags */
#define JS_EVAL_TYPE_GLOBAL (0 << 0) /* global code (default) */
#define JS_EVAL_TYPE_MODULE (1 << 0) /* module code */
#define JS_EVAL_TYPE_DIRECT (2 << 0) /* direct call (internal use) */
#define JS_EVAL_TYPE_INDIRECT (3 << 0) /* indirect call (internal use) */
#define JS_EVAL_TYPE_MASK (3 << 0)
#define JS_EVAL_FLAG_STRICT (1 << 3) /* force 'strict' mode */
#define JS_EVAL_FLAG_STRIP (1 << 4) /* force 'strip' mode */
/* compile but do not run. The result is an object with a
JS_TAG_FUNCTION_BYTECODE or JS_TAG_MODULE tag. It can be executed
with JS_EvalFunction(). */
#define JS_EVAL_FLAG_COMPILE_ONLY (1 << 5)
/* don't include the stack frames before this eval in the Error() backtraces */
#define JS_EVAL_FLAG_BACKTRACE_BARRIER (1 << 6)
typedef JSValue JSCFunction(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv);
typedef JSValue JSCFunctionMagic(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic);
typedef JSValue JSCFunctionData(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic, JSValue *func_data);
typedef struct JSMallocState {
size_t malloc_count;
size_t malloc_size;
size_t malloc_limit;
void *opaque; /* user opaque */
} JSMallocState;
typedef struct JSMallocFunctions {
void *(*js_malloc)(JSMallocState *s, size_t size);
void (*js_free)(JSMallocState *s, void *ptr);
void *(*js_realloc)(JSMallocState *s, void *ptr, size_t size);
size_t (*js_malloc_usable_size)(const void *ptr);
} JSMallocFunctions;
typedef struct JSGCObjectHeader JSGCObjectHeader;
JSRuntime *JS_NewRuntime(void);
/* info lifetime must exceed that of rt */
void JS_SetRuntimeInfo(JSRuntime *rt, const char *info);
void JS_SetMemoryLimit(JSRuntime *rt, size_t limit);
void JS_SetGCThreshold(JSRuntime *rt, size_t gc_threshold);
void JS_SetMaxStackSize(JSRuntime *rt, size_t stack_size);
JSRuntime *JS_NewRuntime2(const JSMallocFunctions *mf, void *opaque);
void JS_FreeRuntime(JSRuntime *rt);
void *JS_GetRuntimeOpaque(JSRuntime *rt);
void JS_SetRuntimeOpaque(JSRuntime *rt, void *opaque);
typedef void JS_MarkFunc(JSRuntime *rt, JSGCObjectHeader *gp);
void JS_MarkValue(JSRuntime *rt, JSValueConst val, JS_MarkFunc *mark_func);
void JS_RunGC(JSRuntime *rt);
JS_BOOL JS_IsLiveObject(JSRuntime *rt, JSValueConst obj);
JSContext *JS_NewContext(JSRuntime *rt);
void JS_FreeContext(JSContext *s);
JSContext *JS_DupContext(JSContext *ctx);
void *JS_GetContextOpaque(JSContext *ctx);
void JS_SetContextOpaque(JSContext *ctx, void *opaque);
JSRuntime *JS_GetRuntime(JSContext *ctx);
void JS_SetClassProto(JSContext *ctx, JSClassID class_id, JSValue obj);
JSValue JS_GetClassProto(JSContext *ctx, JSClassID class_id);
/* the following functions are used to select the intrinsic object to
save memory */
JSContext *JS_NewContextRaw(JSRuntime *rt);
void JS_AddIntrinsicBaseObjects(JSContext *ctx);
void JS_AddIntrinsicDate(JSContext *ctx);
void JS_AddIntrinsicEval(JSContext *ctx);
void JS_AddIntrinsicStringNormalize(JSContext *ctx);
void JS_AddIntrinsicRegExpCompiler(JSContext *ctx);
void JS_AddIntrinsicRegExp(JSContext *ctx);
void JS_AddIntrinsicJSON(JSContext *ctx);
void JS_AddIntrinsicProxy(JSContext *ctx);
void JS_AddIntrinsicMapSet(JSContext *ctx);
void JS_AddIntrinsicTypedArrays(JSContext *ctx);
void JS_AddIntrinsicPromise(JSContext *ctx);
void JS_AddIntrinsicBigInt(JSContext *ctx);
void JS_AddIntrinsicBigFloat(JSContext *ctx);
void JS_AddIntrinsicBigDecimal(JSContext *ctx);
/* enable operator overloading */
void JS_AddIntrinsicOperators(JSContext *ctx);
/* enable "use math" */
void JS_EnableBignumExt(JSContext *ctx, JS_BOOL enable);
JSValue js_string_codePointRange(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv);
void *js_malloc_rt(JSRuntime *rt, size_t size);
void js_free_rt(JSRuntime *rt, void *ptr);
void *js_realloc_rt(JSRuntime *rt, void *ptr, size_t size);
size_t js_malloc_usable_size_rt(JSRuntime *rt, const void *ptr);
void *js_mallocz_rt(JSRuntime *rt, size_t size);
void *js_malloc(JSContext *ctx, size_t size);
void js_free(JSContext *ctx, void *ptr);
void *js_realloc(JSContext *ctx, void *ptr, size_t size);
size_t js_malloc_usable_size(JSContext *ctx, const void *ptr);
void *js_realloc2(JSContext *ctx, void *ptr, size_t size, size_t *pslack);
void *js_mallocz(JSContext *ctx, size_t size);
char *js_strdup(JSContext *ctx, const char *str);
char *js_strndup(JSContext *ctx, const char *s, size_t n);
typedef struct JSMemoryUsage {
int64_t malloc_size, malloc_limit, memory_used_size;
int64_t malloc_count;
int64_t memory_used_count;
int64_t atom_count, atom_size;
int64_t str_count, str_size;
int64_t obj_count, obj_size;
int64_t prop_count, prop_size;
int64_t shape_count, shape_size;
int64_t js_func_count, js_func_size, js_func_code_size;
int64_t js_func_pc2line_count, js_func_pc2line_size;
int64_t c_func_count, array_count;
int64_t fast_array_count, fast_array_elements;
int64_t binary_object_count, binary_object_size;
} JSMemoryUsage;
void JS_ComputeMemoryUsage(JSRuntime *rt, JSMemoryUsage *s);
void JS_DumpMemoryUsage(FILE *fp, const JSMemoryUsage *s, JSRuntime *rt);
/* atom support */
JSAtom JS_NewAtomLen(JSContext *ctx, const char *str, size_t len);
JSAtom JS_NewAtom(JSContext *ctx, const char *str);
JSAtom JS_NewAtomUInt32(JSContext *ctx, uint32_t n);
JSAtom JS_DupAtom(JSContext *ctx, JSAtom v);
void JS_FreeAtom(JSContext *ctx, JSAtom v);
void JS_FreeAtomRT(JSRuntime *rt, JSAtom v);
JSValue JS_AtomToValue(JSContext *ctx, JSAtom atom);
JSValue JS_AtomToString(JSContext *ctx, JSAtom atom);
const char *JS_AtomToCString(JSContext *ctx, JSAtom atom);
JSAtom JS_ValueToAtom(JSContext *ctx, JSValueConst val);
/* object class support */
typedef struct JSPropertyEnum {
JS_BOOL is_enumerable;
JSAtom atom;
} JSPropertyEnum;
typedef struct JSPropertyDescriptor {
int flags;
JSValue value;
JSValue getter;
JSValue setter;
} JSPropertyDescriptor;
typedef struct JSClassExoticMethods {
/* Return -1 if exception (can only happen in case of Proxy object),
FALSE if the property does not exists, TRUE if it exists. If 1 is
returned, the property descriptor 'desc' is filled if != NULL. */
int (*get_own_property)(JSContext *ctx, JSPropertyDescriptor *desc,
JSValueConst obj, JSAtom prop);
/* '*ptab' should hold the '*plen' property keys. Return 0 if OK,
-1 if exception. The 'is_enumerable' field is ignored.
*/
int (*get_own_property_names)(JSContext *ctx, JSPropertyEnum **ptab,
uint32_t *plen,
JSValueConst obj);
/* return < 0 if exception, or TRUE/FALSE */
int (*delete_property)(JSContext *ctx, JSValueConst obj, JSAtom prop);
/* return < 0 if exception or TRUE/FALSE */
int (*define_own_property)(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValueConst val,
JSValueConst getter, JSValueConst setter,
int flags);
/* The following methods can be emulated with the previous ones,
so they are usually not needed */
/* return < 0 if exception or TRUE/FALSE */
int (*has_property)(JSContext *ctx, JSValueConst obj, JSAtom atom);
JSValue (*get_property)(JSContext *ctx, JSValueConst obj, JSAtom atom,
JSValueConst receiver);
/* return < 0 if exception or TRUE/FALSE */
int (*set_property)(JSContext *ctx, JSValueConst obj, JSAtom atom,
JSValueConst value, JSValueConst receiver, int flags);
} JSClassExoticMethods;
typedef void JSClassFinalizer(JSRuntime *rt, JSValue val);
typedef void JSClassGCMark(JSRuntime *rt, JSValueConst val,
JS_MarkFunc *mark_func);
#define JS_CALL_FLAG_CONSTRUCTOR (1 << 0)
typedef JSValue JSClassCall(JSContext *ctx, JSValueConst func_obj,
JSValueConst this_val, int argc, JSValueConst *argv,
int flags);
typedef struct JSClassDef {
const char *class_name;
JSClassFinalizer *finalizer;
JSClassGCMark *gc_mark;
/* if call != NULL, the object is a function. If (flags &
JS_CALL_FLAG_CONSTRUCTOR) != 0, the function is called as a
constructor. In this case, 'this_val' is new.target. A
constructor call only happens if the object constructor bit is
set (see JS_SetConstructorBit()). */
JSClassCall *call;
/* XXX: suppress this indirection ? It is here only to save memory
because only a few classes need these methods */
JSClassExoticMethods *exotic;
} JSClassDef;
JSClassID JS_NewClassID(JSClassID *pclass_id);
int JS_NewClass(JSRuntime *rt, JSClassID class_id, const JSClassDef *class_def);
int JS_IsRegisteredClass(JSRuntime *rt, JSClassID class_id);
/* value handling */
static js_force_inline JSValue JS_NewBool(JSContext *ctx, JS_BOOL val)
{
return JS_MKVAL(JS_TAG_BOOL, val);
}
static js_force_inline JSValue JS_NewInt32(JSContext *ctx, int32_t val)
{
return JS_MKVAL(JS_TAG_INT, val);
}
static js_force_inline JSValue JS_NewCatchOffset(JSContext *ctx, int32_t val)
{
return JS_MKVAL(JS_TAG_CATCH_OFFSET, val);
}
static js_force_inline JSValue JS_NewInt64(JSContext *ctx, int64_t val)
{
JSValue v;
if (val == (int32_t)val) {
v = JS_NewInt32(ctx, val);
} else {
v = __JS_NewFloat64(ctx, val);
}
return v;
}
static js_force_inline JSValue JS_NewUint32(JSContext *ctx, uint32_t val)
{
JSValue v;
if (val <= 0x7fffffff) {
v = JS_NewInt32(ctx, val);
} else {
v = __JS_NewFloat64(ctx, val);
}
return v;
}
JSValue JS_NewBigInt64(JSContext *ctx, int64_t v);
JSValue JS_NewBigUint64(JSContext *ctx, uint64_t v);
static js_force_inline JSValue JS_NewFloat64(JSContext *ctx, double d)
{
JSValue v;
int32_t val;
union {
double d;
uint64_t u;
} u, t;
u.d = d;
val = (int32_t)d;
t.d = val;
/* -0 cannot be represented as integer, so we compare the bit
representation */
if (u.u == t.u) {
v = JS_MKVAL(JS_TAG_INT, val);
} else {
v = __JS_NewFloat64(ctx, d);
}
return v;
}
static inline JS_BOOL JS_IsNumber(JSValueConst v)
{
int tag = JS_VALUE_GET_TAG(v);
return tag == JS_TAG_INT || JS_TAG_IS_FLOAT64(tag);
}
static inline JS_BOOL JS_IsBigInt(JSContext *ctx, JSValueConst v)
{
int tag = JS_VALUE_GET_TAG(v);
return tag == JS_TAG_BIG_INT;
}
static inline JS_BOOL JS_IsBigFloat(JSValueConst v)
{
int tag = JS_VALUE_GET_TAG(v);
return tag == JS_TAG_BIG_FLOAT;
}
static inline JS_BOOL JS_IsBigDecimal(JSValueConst v)
{
int tag = JS_VALUE_GET_TAG(v);
return tag == JS_TAG_BIG_DECIMAL;
}
static inline JS_BOOL JS_IsBool(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_BOOL;
}
static inline JS_BOOL JS_IsNull(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_NULL;
}
static inline JS_BOOL JS_IsUndefined(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_UNDEFINED;
}
static inline JS_BOOL JS_IsException(JSValueConst v)
{
return js_unlikely(JS_VALUE_GET_TAG(v) == JS_TAG_EXCEPTION);
}
static inline JS_BOOL JS_IsUninitialized(JSValueConst v)
{
return js_unlikely(JS_VALUE_GET_TAG(v) == JS_TAG_UNINITIALIZED);
}
static inline JS_BOOL JS_IsString(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_STRING;
}
static inline JS_BOOL JS_IsSymbol(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_SYMBOL;
}
static inline JS_BOOL JS_IsObject(JSValueConst v)
{
return JS_VALUE_GET_TAG(v) == JS_TAG_OBJECT;
}
JSValue JS_Throw(JSContext *ctx, JSValue obj);
JSValue JS_GetException(JSContext *ctx);
JS_BOOL JS_IsError(JSContext *ctx, JSValueConst val);
void JS_ResetUncatchableError(JSContext *ctx);
JSValue JS_NewError(JSContext *ctx);
JSValue __js_printf_like(2, 3) JS_ThrowSyntaxError(JSContext *ctx, const char *fmt, ...);
JSValue __js_printf_like(2, 3) JS_ThrowTypeError(JSContext *ctx, const char *fmt, ...);
JSValue __js_printf_like(2, 3) JS_ThrowReferenceError(JSContext *ctx, const char *fmt, ...);
JSValue __js_printf_like(2, 3) JS_ThrowRangeError(JSContext *ctx, const char *fmt, ...);
JSValue __js_printf_like(2, 3) JS_ThrowInternalError(JSContext *ctx, const char *fmt, ...);
JSValue JS_ThrowOutOfMemory(JSContext *ctx);
void __JS_FreeValue(JSContext *ctx, JSValue v);
static inline void JS_FreeValue(JSContext *ctx, JSValue v)
{
if (JS_VALUE_HAS_REF_COUNT(v)) {
JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v);
if (--p->ref_count <= 0) {
__JS_FreeValue(ctx, v);
}
}
}
void __JS_FreeValueRT(JSRuntime *rt, JSValue v);
static inline void JS_FreeValueRT(JSRuntime *rt, JSValue v)
{
if (JS_VALUE_HAS_REF_COUNT(v)) {
JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v);
if (--p->ref_count <= 0) {
__JS_FreeValueRT(rt, v);
}
}
}
static inline JSValue JS_DupValue(JSContext *ctx, JSValueConst v)
{
if (JS_VALUE_HAS_REF_COUNT(v)) {
JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v);
p->ref_count++;
}
return (JSValue)v;
}
static inline JSValue JS_DupValueRT(JSRuntime *rt, JSValueConst v)
{
if (JS_VALUE_HAS_REF_COUNT(v)) {
JSRefCountHeader *p = (JSRefCountHeader *)JS_VALUE_GET_PTR(v);
p->ref_count++;
}
return (JSValue)v;
}
int JS_ToBool(JSContext *ctx, JSValueConst val); /* return -1 for JS_EXCEPTION */
int JS_ToInt32(JSContext *ctx, int32_t *pres, JSValueConst val);
static inline int JS_ToUint32(JSContext *ctx, uint32_t *pres, JSValueConst val)
{
return JS_ToInt32(ctx, (int32_t*)pres, val);
}
int JS_ToInt64(JSContext *ctx, int64_t *pres, JSValueConst val);
int JS_ToIndex(JSContext *ctx, uint64_t *plen, JSValueConst val);
int JS_ToFloat64(JSContext *ctx, double *pres, JSValueConst val);
/* return an exception if 'val' is a Number */
int JS_ToBigInt64(JSContext *ctx, int64_t *pres, JSValueConst val);
/* same as JS_ToInt64() but allow BigInt */
int JS_ToInt64Ext(JSContext *ctx, int64_t *pres, JSValueConst val);
JSValue JS_NewStringLen(JSContext *ctx, const char *str1, size_t len1);
JSValue JS_NewString(JSContext *ctx, const char *str);
JSValue JS_NewAtomString(JSContext *ctx, const char *str);
JSValue JS_ToString(JSContext *ctx, JSValueConst val);
JSValue JS_ToPropertyKey(JSContext *ctx, JSValueConst val);
const char *JS_ToCStringLen2(JSContext *ctx, size_t *plen, JSValueConst val1, JS_BOOL cesu8);
static inline const char *JS_ToCStringLen(JSContext *ctx, size_t *plen, JSValueConst val1)
{
return JS_ToCStringLen2(ctx, plen, val1, 0);
}
static inline const char *JS_ToCString(JSContext *ctx, JSValueConst val1)
{
return JS_ToCStringLen2(ctx, NULL, val1, 0);
}
void JS_FreeCString(JSContext *ctx, const char *ptr);
JSValue JS_NewObjectProtoClass(JSContext *ctx, JSValueConst proto, JSClassID class_id);
JSValue JS_NewObjectClass(JSContext *ctx, int class_id);
JSValue JS_NewObjectProto(JSContext *ctx, JSValueConst proto);
JSValue JS_NewObject(JSContext *ctx);
JS_BOOL JS_IsFunction(JSContext* ctx, JSValueConst val);
JS_BOOL JS_IsConstructor(JSContext* ctx, JSValueConst val);
JS_BOOL JS_SetConstructorBit(JSContext *ctx, JSValueConst func_obj, JS_BOOL val);
JSValue JS_NewArray(JSContext *ctx);
int JS_IsArray(JSContext *ctx, JSValueConst val);
JSValue JS_GetPropertyInternal(JSContext *ctx, JSValueConst obj,
JSAtom prop, JSValueConst receiver,
JS_BOOL throw_ref_error);
static js_force_inline JSValue JS_GetProperty(JSContext *ctx, JSValueConst this_obj,
JSAtom prop)
{
return JS_GetPropertyInternal(ctx, this_obj, prop, this_obj, 0);
}
JSValue JS_GetPropertyStr(JSContext *ctx, JSValueConst this_obj,
const char *prop);
JSValue JS_GetPropertyUint32(JSContext *ctx, JSValueConst this_obj,
uint32_t idx);
int JS_SetPropertyInternal(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValue val,
int flags);
static inline int JS_SetProperty(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValue val)
{
return JS_SetPropertyInternal(ctx, this_obj, prop, val, JS_PROP_THROW);
}
int JS_SetPropertyUint32(JSContext *ctx, JSValueConst this_obj,
uint32_t idx, JSValue val);
int JS_SetPropertyInt64(JSContext *ctx, JSValueConst this_obj,
int64_t idx, JSValue val);
int JS_SetPropertyStr(JSContext *ctx, JSValueConst this_obj,
const char *prop, JSValue val);
int JS_HasProperty(JSContext *ctx, JSValueConst this_obj, JSAtom prop);
int JS_IsExtensible(JSContext *ctx, JSValueConst obj);
int JS_PreventExtensions(JSContext *ctx, JSValueConst obj);
int JS_DeleteProperty(JSContext *ctx, JSValueConst obj, JSAtom prop, int flags);
int JS_SetPrototype(JSContext *ctx, JSValueConst obj, JSValueConst proto_val);
JSValueConst JS_GetPrototype(JSContext *ctx, JSValueConst val);
#define JS_GPN_STRING_MASK (1 << 0)
#define JS_GPN_SYMBOL_MASK (1 << 1)
#define JS_GPN_PRIVATE_MASK (1 << 2)
/* only include the enumerable properties */
#define JS_GPN_ENUM_ONLY (1 << 4)
/* set theJSPropertyEnum.is_enumerable field */
#define JS_GPN_SET_ENUM (1 << 5)
int JS_GetOwnPropertyNames(JSContext *ctx, JSPropertyEnum **ptab,
uint32_t *plen, JSValueConst obj, int flags);
int JS_GetOwnProperty(JSContext *ctx, JSPropertyDescriptor *desc,
JSValueConst obj, JSAtom prop);
JSValue JS_Call(JSContext *ctx, JSValueConst func_obj, JSValueConst this_obj,
int argc, JSValueConst *argv);
JSValue JS_Invoke(JSContext *ctx, JSValueConst this_val, JSAtom atom,
int argc, JSValueConst *argv);
JSValue JS_CallConstructor(JSContext *ctx, JSValueConst func_obj,
int argc, JSValueConst *argv);
JSValue JS_CallConstructor2(JSContext *ctx, JSValueConst func_obj,
JSValueConst new_target,
int argc, JSValueConst *argv);
JS_BOOL JS_DetectModule(const char *input, size_t input_len);
/* 'input' must be zero terminated i.e. input[input_len] = '\0'. */
JSValue JS_Eval(JSContext *ctx, const char *input, size_t input_len,
const char *filename, int eval_flags);
JSValue JS_EvalFunction(JSContext *ctx, JSValue fun_obj);
JSValue JS_GetGlobalObject(JSContext *ctx);
int JS_IsInstanceOf(JSContext *ctx, JSValueConst val, JSValueConst obj);
int JS_DefineProperty(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValueConst val,
JSValueConst getter, JSValueConst setter, int flags);
int JS_DefinePropertyValue(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValue val, int flags);
int JS_DefinePropertyValueUint32(JSContext *ctx, JSValueConst this_obj,
uint32_t idx, JSValue val, int flags);
int JS_DefinePropertyValueStr(JSContext *ctx, JSValueConst this_obj,
const char *prop, JSValue val, int flags);
int JS_DefinePropertyGetSet(JSContext *ctx, JSValueConst this_obj,
JSAtom prop, JSValue getter, JSValue setter,
int flags);
void JS_SetOpaque(JSValue obj, void *opaque);
void *JS_GetOpaque(JSValueConst obj, JSClassID class_id);
void *JS_GetOpaque2(JSContext *ctx, JSValueConst obj, JSClassID class_id);
/* 'buf' must be zero terminated i.e. buf[buf_len] = '\0'. */
JSValue JS_ParseJSON(JSContext *ctx, const char *buf, size_t buf_len,
const char *filename);
JSValue JS_JSONStringify(JSContext *ctx, JSValueConst obj,
JSValueConst replacer, JSValueConst space0);
typedef void JSFreeArrayBufferDataFunc(JSRuntime *rt, void *opaque, void *ptr);
JSValue JS_NewArrayBuffer(JSContext *ctx, uint8_t *buf, size_t len,
JSFreeArrayBufferDataFunc *free_func, void *opaque,
JS_BOOL is_shared);
JSValue JS_NewArrayBufferCopy(JSContext *ctx, const uint8_t *buf, size_t len);
void JS_DetachArrayBuffer(JSContext *ctx, JSValueConst obj);
uint8_t *JS_GetArrayBuffer(JSContext *ctx, size_t *psize, JSValueConst obj);
JSValue JS_GetTypedArrayBuffer(JSContext *ctx, JSValueConst obj,
size_t *pbyte_offset,
size_t *pbyte_length,
size_t *pbytes_per_element);
JSValue JS_NewPromiseCapability(JSContext *ctx, JSValue *resolving_funcs);
/* is_handled = TRUE means that the rejection is handled */
typedef void JSHostPromiseRejectionTracker(JSContext *ctx, JSValueConst promise,
JSValueConst reason,
JS_BOOL is_handled, void *opaque);
void JS_SetHostPromiseRejectionTracker(JSRuntime *rt, JSHostPromiseRejectionTracker *cb, void *opaque);
/* return != 0 if the JS code needs to be interrupted */
typedef int JSInterruptHandler(JSRuntime *rt, void *opaque);
void JS_SetInterruptHandler(JSRuntime *rt, JSInterruptHandler *cb, void *opaque);
/* if can_block is TRUE, Atomics.wait() can be used */
void JS_SetCanBlock(JSRuntime *rt, JS_BOOL can_block);
typedef struct JSModuleDef JSModuleDef;
/* return the module specifier (allocated with js_malloc()) or NULL if
exception */
typedef char *JSModuleNormalizeFunc(JSContext *ctx,
const char *module_base_name,
const char *module_name, void *opaque);
typedef JSModuleDef *JSModuleLoaderFunc(JSContext *ctx,
const char *module_name, void *opaque);
/* module_normalize = NULL is allowed and invokes the default module
filename normalizer */
void JS_SetModuleLoaderFunc(JSRuntime *rt,
JSModuleNormalizeFunc *module_normalize,
JSModuleLoaderFunc *module_loader, void *opaque);
/* return the import.meta object of a module */
JSValue JS_GetImportMeta(JSContext *ctx, JSModuleDef *m);
JSAtom JS_GetModuleName(JSContext *ctx, JSModuleDef *m);
/* JS Job support */
typedef JSValue JSJobFunc(JSContext *ctx, int argc, JSValueConst *argv);
int JS_EnqueueJob(JSContext *ctx, JSJobFunc *job_func, int argc, JSValueConst *argv);
JS_BOOL JS_IsJobPending(JSRuntime *rt);
int JS_ExecutePendingJob(JSRuntime *rt, JSContext **pctx);
/* Object Writer/Reader (currently only used to handle precompiled code) */
#define JS_WRITE_OBJ_BYTECODE (1 << 0) /* allow function/module */
#define JS_WRITE_OBJ_BSWAP (1 << 1) /* byte swapped output */
uint8_t *JS_WriteObject(JSContext *ctx, size_t *psize, JSValueConst obj,
int flags);
#define JS_READ_OBJ_BYTECODE (1 << 0) /* allow function/module */
#define JS_READ_OBJ_ROM_DATA (1 << 1) /* avoid duplicating 'buf' data */
JSValue JS_ReadObject(JSContext *ctx, const uint8_t *buf, size_t buf_len,
int flags);
/* load the dependencies of the module 'obj'. Useful when JS_ReadObject()
returns a module. */
int JS_ResolveModule(JSContext *ctx, JSValueConst obj);
/* C function definition */
typedef enum JSCFunctionEnum { /* XXX: should rename for namespace isolation */
JS_CFUNC_generic,
JS_CFUNC_generic_magic,
JS_CFUNC_constructor,
JS_CFUNC_constructor_magic,
JS_CFUNC_constructor_or_func,
JS_CFUNC_constructor_or_func_magic,
JS_CFUNC_f_f,
JS_CFUNC_f_f_f,
JS_CFUNC_getter,
JS_CFUNC_setter,
JS_CFUNC_getter_magic,
JS_CFUNC_setter_magic,
JS_CFUNC_iterator_next,
} JSCFunctionEnum;
typedef union JSCFunctionType {
JSCFunction *generic;
JSValue (*generic_magic)(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv, int magic);
JSCFunction *constructor;
JSValue (*constructor_magic)(JSContext *ctx, JSValueConst new_target, int argc, JSValueConst *argv, int magic);
JSCFunction *constructor_or_func;
double (*f_f)(double);
double (*f_f_f)(double, double);
JSValue (*getter)(JSContext *ctx, JSValueConst this_val);
JSValue (*setter)(JSContext *ctx, JSValueConst this_val, JSValueConst val);
JSValue (*getter_magic)(JSContext *ctx, JSValueConst this_val, int magic);
JSValue (*setter_magic)(JSContext *ctx, JSValueConst this_val, JSValueConst val, int magic);
JSValue (*iterator_next)(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv, int *pdone, int magic);
} JSCFunctionType;
JSValue JS_NewCFunction2(JSContext *ctx, JSCFunction *func,
const char *name,
int length, JSCFunctionEnum cproto, int magic);
JSValue JS_NewCFunctionData(JSContext *ctx, JSCFunctionData *func,
int length, int magic, int data_len,
JSValueConst *data);
static inline JSValue JS_NewCFunction(JSContext *ctx, JSCFunction *func, const char *name,
int length)
{
return JS_NewCFunction2(ctx, func, name, length, JS_CFUNC_generic, 0);
}
static inline JSValue JS_NewCFunctionMagic(JSContext *ctx, JSCFunctionMagic *func,
const char *name,
int length, JSCFunctionEnum cproto, int magic)
{
return JS_NewCFunction2(ctx, (JSCFunction *)func, name, length, cproto, magic);
}
void JS_SetConstructor(JSContext *ctx, JSValueConst func_obj,
JSValueConst proto);
/* C property definition */
typedef struct JSCFunctionListEntry {
const char *name;
uint8_t prop_flags;
uint8_t def_type;
int16_t magic;
union {
struct {
uint8_t length; /* XXX: should move outside union */
uint8_t cproto; /* XXX: should move outside union */
JSCFunctionType cfunc;
} func;
struct {
JSCFunctionType get;
JSCFunctionType set;
} getset;
struct {
const char *name;
int base;
} alias;
struct {
const struct JSCFunctionListEntry *tab;
int len;
} prop_list;
const char *str;
int32_t i32;
int64_t i64;
double f64;
} u;
} JSCFunctionListEntry;
#define JS_DEF_CFUNC 0
#define JS_DEF_CGETSET 1
#define JS_DEF_CGETSET_MAGIC 2
#define JS_DEF_PROP_STRING 3
#define JS_DEF_PROP_INT32 4
#define JS_DEF_PROP_INT64 5
#define JS_DEF_PROP_DOUBLE 6
#define JS_DEF_PROP_UNDEFINED 7
#define JS_DEF_OBJECT 8
#define JS_DEF_ALIAS 9
/* Note: c++ does not like nested designators */
#define JS_CFUNC_DEF(name, length, func1) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, 0, .u = { .func = { length, JS_CFUNC_generic, { .generic = func1 } } } }
#define JS_CFUNC_MAGIC_DEF(name, length, func1, magic) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, magic, .u = { .func = { length, JS_CFUNC_generic_magic, { .generic_magic = func1 } } } }
#define JS_CFUNC_SPECIAL_DEF(name, length, cproto, func1) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, 0, .u = { .func = { length, JS_CFUNC_ ## cproto, { .cproto = func1 } } } }
#define JS_ITERATOR_NEXT_DEF(name, length, func1, magic) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_CFUNC, magic, .u = { .func = { length, JS_CFUNC_iterator_next, { .iterator_next = func1 } } } }
#define JS_CGETSET_DEF(name, fgetter, fsetter) { name, JS_PROP_CONFIGURABLE, JS_DEF_CGETSET, 0, .u = { .getset = { .get = { .getter = fgetter }, .set = { .setter = fsetter } } } }
#define JS_CGETSET_MAGIC_DEF(name, fgetter, fsetter, magic) { name, JS_PROP_CONFIGURABLE, JS_DEF_CGETSET_MAGIC, magic, .u = { .getset = { .get = { .getter_magic = fgetter }, .set = { .setter_magic = fsetter } } } }
#define JS_PROP_STRING_DEF(name, cstr, prop_flags) { name, prop_flags, JS_DEF_PROP_STRING, 0, .u = { .str = cstr } }
#define JS_PROP_INT32_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_INT32, 0, .u = { .i32 = val } }
#define JS_PROP_INT64_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_INT64, 0, .u = { .i64 = val } }
#define JS_PROP_DOUBLE_DEF(name, val, prop_flags) { name, prop_flags, JS_DEF_PROP_DOUBLE, 0, .u = { .f64 = val } }
#define JS_PROP_UNDEFINED_DEF(name, prop_flags) { name, prop_flags, JS_DEF_PROP_UNDEFINED, 0, .u = { .i32 = 0 } }
#define JS_OBJECT_DEF(name, tab, len, prop_flags) { name, prop_flags, JS_DEF_OBJECT, 0, .u = { .prop_list = { tab, len } } }
#define JS_ALIAS_DEF(name, from) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_ALIAS, 0, .u = { .alias = { from, -1 } } }
#define JS_ALIAS_BASE_DEF(name, from, base) { name, JS_PROP_WRITABLE | JS_PROP_CONFIGURABLE, JS_DEF_ALIAS, 0, .u = { .alias = { from, base } } }
void JS_SetPropertyFunctionList(JSContext *ctx, JSValueConst obj,
const JSCFunctionListEntry *tab,
int len);
/* C module definition */
typedef int JSModuleInitFunc(JSContext *ctx, JSModuleDef *m);
JSModuleDef *JS_NewCModule(JSContext *ctx, const char *name_str,
JSModuleInitFunc *func);
/* can only be called before the module is instantiated */
int JS_AddModuleExport(JSContext *ctx, JSModuleDef *m, const char *name_str);
int JS_AddModuleExportList(JSContext *ctx, JSModuleDef *m,
const JSCFunctionListEntry *tab, int len);
/* can only be called after the module is instantiated */
int JS_SetModuleExport(JSContext *ctx, JSModuleDef *m, const char *export_name,
JSValue val);
int JS_SetModuleExportList(JSContext *ctx, JSModuleDef *m,
const JSCFunctionListEntry *tab, int len);
#undef js_unlikely
#undef js_force_inline
#ifdef __cplusplus
} /* extern "C" { */
#endif
#endif /* QUICKJS_H */
Reference in New Issue View Git Blame Copy Permalink