src/ecmascript/spidermonkey/util.h

   1
   2 #ifndef EL__ECMASCRIPT_SPIDERMONKEY_UTIL_H
   3 #define EL__ECMASCRIPT_SPIDERMONKEY_UTIL_H
   4
   5 /* For wild SpiderMonkey installations. */
   6 #ifdef CONFIG_BEOS
   7 #define XP_BEOS
   8 #elif CONFIG_OS2
   9 #define XP_OS2
  10 #elif CONFIG_RISCOS
  11 #error Out of luck, buddy!
  12 #elif CONFIG_UNIX
  13 #define XP_UNIX
  14 #elif CONFIG_WIN32
  15 #define XP_WIN
  16 #endif
  17
  18 #include <jsapi.h>
  19 #include "util/memory.h"
  20 #include "util/string.h"
  21
  22 static void string_to_jsval(JSContext *ctx, jsval *vp, unsigned char *string);
  23 static void astring_to_jsval(JSContext *ctx, jsval *vp, unsigned char *string);
  24 static void int_to_jsval(JSContext *ctx, jsval *vp, int number);
  25 static void object_to_jsval(JSContext *ctx, jsval *vp, JSObject *object);
  26 static void boolean_to_jsval(JSContext *ctx, jsval *vp, int boolean);
  27 static void undef_to_jsval(JSContext *ctx, jsval *vp);
  28
  29 static int jsval_to_boolean(JSContext *ctx, jsval *vp);
  30 static unsigned char *jsval_to_string(JSContext *ctx, jsval *vp);
  31
  32
  33
  34 /** Inline functions */
  35
  36 static inline void
  37 string_to_jsval(JSContext *ctx, jsval *vp, unsigned char *string)
  38 {
  39         if (!string) {
  40                 *vp = JSVAL_NULL;
  41         } else {
  42                 *vp = STRING_TO_JSVAL(JS_NewStringCopyZ(ctx, string));
  43         }
  44 }
  45
  46 static inline void
  47 astring_to_jsval(JSContext *ctx, jsval *vp, unsigned char *string)
  48 {
  49         string_to_jsval(ctx, vp, string);
  50         mem_free_if(string);
  51 }
  52
  53 static inline void
  54 int_to_jsval(JSContext *ctx, jsval *vp, int number)
  55 {
  56         *vp = INT_TO_JSVAL(number);
  57 }
  58
  59 static inline void
  60 object_to_jsval(JSContext *ctx, jsval *vp, JSObject *object)
  61 {
  62         *vp = OBJECT_TO_JSVAL(object);
  63 }
  64
  65 static inline void
  66 boolean_to_jsval(JSContext *ctx, jsval *vp, int boolean)
  67 {
  68         *vp = BOOLEAN_TO_JSVAL(boolean);
  69 }
  70
  71 static inline void
  72 undef_to_jsval(JSContext *ctx, jsval *vp)
  73 {
  74         *vp = JSVAL_NULL;
  75 }
  76
  77
  78 static inline int
  79 jsval_to_boolean(JSContext *ctx, jsval *vp)
  80 {
  81         jsval val;
  82
  83         if (JS_ConvertValue(ctx, *vp, JSTYPE_BOOLEAN, &val) == JS_FALSE) {
  84                 return JS_FALSE;
  85         }
  86
  87         return JSVAL_TO_BOOLEAN(val);
  88 }
  89
  90 static inline unsigned char *
  91 jsval_to_string(JSContext *ctx, jsval *vp)
  92 {
  93         jsval val;
  94
  95         if (JS_ConvertValue(ctx, *vp, JSTYPE_STRING, &val) == JS_FALSE) {
  96                 return "";
  97         }
  98
  99         return empty_string_or_(JS_GetStringBytes(JS_ValueToString(ctx, val)));
 100 }
 101
 102 /** An ELinks-specific replacement for JSFunctionSpec.
 103  *
 104  * Bug 1016: In SpiderMonkey 1.7 bundled with XULRunner 1.8, jsapi.h
 105  * defines JSFunctionSpec in different ways depending on whether
 106  * MOZILLA_1_8_BRANCH is defined, and there is no obvious way for
 107  * ELinks to check whether MOZILLA_1_8_BRANCH was defined when the
 108  * library was built.  Avoid the unstable JSFunctionSpec definitions
 109  * and use this ELinks-specific structure instead.  */
 110 typedef struct spidermonkeyFunctionSpec {
 111         const char *name;
 112         JSNative call;
 113         uint8 nargs;
 114         /* ELinks does not use "flags" and "extra" so omit them here.  */
 115 } spidermonkeyFunctionSpec;
 116
 117 JSBool spidermonkey_DefineFunctions(JSContext *cx, JSObject *obj,
 118                                     const spidermonkeyFunctionSpec *fs);
 119 JSObject *spidermonkey_InitClass(JSContext *cx, JSObject *obj,
 120                                  JSObject *parent_proto, JSClass *clasp,
 121                                  JSNative constructor, uintN nargs,
 122                                  JSPropertySpec *ps,
 123                                  const spidermonkeyFunctionSpec *fs,
 124                                  JSPropertySpec *static_ps,
 125                                  const spidermonkeyFunctionSpec *static_fs);
 126
 127 #endif