1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #include <jsapi.h> 11 12 #include "SkJS.h" 13 #include "SkString.h" 14 15 #ifdef _WIN32_WCE 16 extern "C" { 17 void abort() { 18 SkASSERT(0); 19 } 20 21 unsigned int _control87(unsigned int _new, unsigned int mask ) { 22 SkASSERT(0); 23 return 0; 24 } 25 26 time_t mktime(struct tm *timeptr ) { 27 SkASSERT(0); 28 return 0; 29 } 30 31 // int errno; 32 33 char *strdup(const char *) { 34 SkASSERT(0); 35 return 0; 36 } 37 38 char *strerror(int errnum) { 39 SkASSERT(0); 40 return 0; 41 } 42 43 int isatty(void* fd) { 44 SkASSERT(0); 45 return 0; 46 } 47 48 int putenv(const char *envstring) { 49 SkASSERT(0); 50 return 0; 51 } 52 53 char *getenv(const char *varname) { 54 SkASSERT(0); 55 return 0; 56 } 57 58 void GetSystemTimeAsFileTime(LPFILETIME lpSystemTimeAsFileTime) { 59 SkASSERT(0); 60 } 61 62 struct tm * localtime(const time_t *timer) { 63 SkASSERT(0); 64 return 0; 65 } 66 67 size_t strftime(char *strDest, size_t maxsize, const char *format, 68 const struct tm *timeptr ) { 69 SkASSERT(0); 70 return 0; 71 } 72 73 } 74 #endif 75 76 static JSBool 77 global_enumerate(JSContext *cx, JSObject *obj) 78 { 79 #ifdef LAZY_STANDARD_CLASSES 80 return JS_EnumerateStandardClasses(cx, obj); 81 #else 82 return JS_TRUE; 83 #endif 84 } 85 86 static JSBool 87 global_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags, JSObject **objp) 88 { 89 #ifdef LAZY_STANDARD_CLASSES 90 if ((flags & JSRESOLVE_ASSIGNING) == 0) { 91 JSBool resolved; 92 93 if (!JS_ResolveStandardClass(cx, obj, id, &resolved)) 94 return JS_FALSE; 95 if (resolved) { 96 *objp = obj; 97 return JS_TRUE; 98 } 99 } 100 #endif 101 102 #if defined(SHELL_HACK) && defined(DEBUG) && defined(XP_UNIX) 103 if ((flags & (JSRESOLVE_QUALIFIED | JSRESOLVE_ASSIGNING)) == 0) { 104 /* 105 * Do this expensive hack only for unoptimized Unix builds, which are 106 * not used for benchmarking. 107 */ 108 char *path, *comp, *full; 109 const char *name; 110 JSBool ok, found; 111 JSFunction *fun; 112 113 if (!JSVAL_IS_STRING(id)) 114 return JS_TRUE; 115 path = getenv("PATH"); 116 if (!path) 117 return JS_TRUE; 118 path = JS_strdup(cx, path); 119 if (!path) 120 return JS_FALSE; 121 name = JS_GetStringBytes(JSVAL_TO_STRING(id)); 122 ok = JS_TRUE; 123 for (comp = strtok(path, ":"); comp; comp = strtok(NULL, ":")) { 124 if (*comp != '\0') { 125 full = JS_smprintf("%s/%s", comp, name); 126 if (!full) { 127 JS_ReportOutOfMemory(cx); 128 ok = JS_FALSE; 129 break; 130 } 131 } else { 132 full = (char *)name; 133 } 134 found = (access(full, X_OK) == 0); 135 if (*comp != '\0') 136 free(full); 137 if (found) { 138 fun = JS_DefineFunction(cx, obj, name, Exec, 0, JSPROP_ENUMERATE); 139 ok = (fun != NULL); 140 if (ok) 141 *objp = obj; 142 break; 143 } 144 } 145 JS_free(cx, path); 146 return ok; 147 } 148 #else 149 return JS_TRUE; 150 #endif 151 } 152 153 JSClass global_class = { 154 "global", JSCLASS_NEW_RESOLVE, 155 JS_PropertyStub, JS_PropertyStub, 156 JS_PropertyStub, JS_PropertyStub, 157 global_enumerate, (JSResolveOp) global_resolve, 158 JS_ConvertStub, JS_FinalizeStub 159 }; 160 161 SkJS::SkJS(void* hwnd) : SkOSWindow(hwnd) { 162 if ((fRuntime = JS_NewRuntime(0x100000)) == NULL) { 163 SkASSERT(0); 164 return; 165 } 166 if ((fContext = JS_NewContext(fRuntime, 0x1000)) == NULL) { 167 SkASSERT(0); 168 return; 169 } 170 ; 171 if ((fGlobal = JS_NewObject(fContext, &global_class, NULL, NULL)) == NULL) { 172 SkASSERT(0); 173 return; 174 } 175 if (JS_InitStandardClasses(fContext, fGlobal) == NULL) { 176 SkASSERT(0); 177 return; 178 } 179 setConfig(SkBitmap::kARGB32_Config); 180 updateSize(); 181 setVisibleP(true); 182 InitializeDisplayables(getBitmap(), fContext, fGlobal, NULL); 183 } 184 185 SkJS::~SkJS() { 186 DisposeDisplayables(); 187 JS_DestroyContext(fContext); 188 JS_DestroyRuntime(fRuntime); 189 JS_ShutDown(); 190 } 191 192 SkBool SkJS::EvaluateScript(const char* script, jsval* rVal) { 193 return JS_EvaluateScript(fContext, fGlobal, script, strlen(script), 194 "memory" /* no file name */, 0 /* no line number */, rVal); 195 } 196 197 SkBool SkJS::ValueToString(jsval value, SkString* string) { 198 JSString* str = JS_ValueToString(fContext, value); 199 if (str == NULL) 200 return false; 201 string->set(JS_GetStringBytes(str)); 202 return true; 203 } 204 205 #ifdef SK_DEBUG 206 void SkJS::Test(void* hwnd) { 207 SkJS js(hwnd); 208 jsval val; 209 SkBool success = js.EvaluateScript("22/7", &val); 210 SkASSERT(success); 211 SkString string; 212 success = js.ValueToString(val, &string); 213 SkASSERT(success); 214 SkASSERT(strcmp(string.c_str(), "3.142857142857143") == 0); 215 success = js.EvaluateScript( 216 "var rect = new rectangle();" 217 "rect.left = 4;" 218 "rect.top = 10;" 219 "rect.right = 20;" 220 "rect.bottom = 30;" 221 "rect.width = rect.height + 20;" 222 "rect.draw();" 223 , &val); 224 SkASSERT(success); 225 success = js.ValueToString(val, &string); 226 SkASSERT(success); 227 } 228 #endifASSERT(success); 229
