#ifndef js_value_h#define js_value_h typedef struct js_Property js_Property;typedef struct js_Iterator js_Iterator; /* Hint to ToPrimitive() */enum {	JS_HNONE,	JS_HNUMBER,	JS_HSTRING}; enum js_Type {	JS_TSHRSTR, /* type tag doubles as string zero-terminator */	JS_TUNDEFINED,	JS_TNULL,	JS_TBOOLEAN,	JS_TNUMBER,	JS_TLITSTR,	JS_TMEMSTR,	JS_TOBJECT,}; enum js_Class {	JS_COBJECT,	JS_CARRAY,	JS_CFUNCTION,	JS_CSCRIPT, /* function created from global/eval code */	JS_CCFUNCTION, /* built-in function */	JS_CERROR,	JS_CBOOLEAN,	JS_CNUMBER,	JS_CSTRING,	JS_CREGEXP,	JS_CDATE,	JS_CMATH,	JS_CJSON,	JS_CARGUMENTS,	JS_CITERATOR,	JS_CUSERDATA,}; /*	Short strings abuse the js_Value struct. By putting the type tag in the	last byte, and using 0 as the tag for short strings, we can use the	entire js_Value as string storage by letting the type tag serve double	purpose as the string zero terminator.*/ struct js_Value{	union {		int boolean;		double number;		char shrstr[8];		const char *litstr;		js_String *memstr;		js_Object *object;	} u;	char pad[7]; /* extra storage for shrstr */	char type; /* type tag and zero terminator for shrstr */}; struct js_String{	js_String *gcnext;	char gcmark;	char p[1];}; struct js_Regexp{	void *prog;	char *source;	unsigned short flags;	unsigned short last;}; struct js_Object{	enum js_Class type;	int extensible;	js_Property *properties;	int count; /* number of properties, for array sparseness check */	js_Object *prototype;	union {		int boolean;		double number;		struct {			const char *string;			int length;		} s;		struct {			int length;		} a;		struct {			js_Function *function;			js_Environment *scope;		} f;		struct {			const char *name;			js_CFunction function;			js_CFunction constructor;			int length;		} c;		js_Regexp r;		struct {			js_Object *target;			js_Iterator *head;		} iter;		struct {			const char *tag;			void *data;			js_HasProperty has;			js_Put put;			js_Delete delete;			js_Finalize finalize;		} user;	} u;	js_Object *gcnext; /* allocation list */	js_Object *gcroot; /* scan list */	int gcmark;};#pragma incomplete js_Object struct js_Property{	const char *name;	js_Property *left, *right;	int level;	int atts;	js_Value value;	js_Object *getter;	js_Object *setter;}; struct js_Iterator{	const char *name;	js_Iterator *next;}; /* jsrun.c */js_String *jsV_newmemstring(js_State *J, const char *s, int n);js_Value *js_tovalue(js_State *J, int idx);void js_toprimitive(js_State *J, int idx, int hint);js_Object *js_toobject(js_State *J, int idx);void js_pushvalue(js_State *J, js_Value v);void js_pushobject(js_State *J, js_Object *v); /* jsvalue.c */int jsV_toboolean(js_State *J, js_Value *v);double jsV_tonumber(js_State *J, js_Value *v);double jsV_tointeger(js_State *J, js_Value *v);const char *jsV_tostring(js_State *J, js_Value *v);js_Object *jsV_toobject(js_State *J, js_Value *v);void jsV_toprimitive(js_State *J, js_Value *v, int preferred); const char *js_itoa(char buf[32], int a);double js_stringtofloat(const char *s, char **ep);int jsV_numbertointeger(double n);int jsV_numbertoint32(double n);unsigned int jsV_numbertouint32(double n);short jsV_numbertoint16(double n);unsigned short jsV_numbertouint16(double n);const char *jsV_numbertostring(js_State *J, char buf[32], double number);double jsV_stringtonumber(js_State *J, const char *string); /* jsproperty.c */js_Object *jsV_newobject(js_State *J, enum js_Class type, js_Object *prototype);js_Property *jsV_getownproperty(js_State *J, js_Object *obj, const char *name);js_Property *jsV_getpropertyx(js_State *J, js_Object *obj, const char *name, int *own);js_Property *jsV_getproperty(js_State *J, js_Object *obj, const char *name);js_Property *jsV_setproperty(js_State *J, js_Object *obj, const char *name);js_Property *jsV_nextproperty(js_State *J, js_Object *obj, const char *name);void jsV_delproperty(js_State *J, js_Object *obj, const char *name); js_Object *jsV_newiterator(js_State *J, js_Object *obj, int own);const char *jsV_nextiterator(js_State *J, js_Object *iter); void jsV_resizearray(js_State *J, js_Object *obj, int newlen); /* jsdump.c */void js_dumpobject(js_State *J, js_Object *obj);void js_dumpvalue(js_State *J, js_Value v); #endif