michael@0: 
michael@0: /*
michael@0:  * Copyright 2006 The Android Open Source Project
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #include <jsapi.h>
michael@0: 
michael@0: #include "SkJS.h"
michael@0: #include "SkString.h"
michael@0: 
michael@0: #ifdef _WIN32_WCE
michael@0: extern "C" {
michael@0:     void abort() {
michael@0:         SkASSERT(0);
michael@0:     }
michael@0: 
michael@0:     unsigned int _control87(unsigned int _new, unsigned int mask ) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     time_t mktime(struct tm *timeptr ) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0: //  int errno;
michael@0: 
michael@0:     char *strdup(const char *) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     char *strerror(int errnum) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     int isatty(void* fd) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     int putenv(const char *envstring) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     char *getenv(const char *varname) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     void GetSystemTimeAsFileTime(LPFILETIME lpSystemTimeAsFileTime) {
michael@0:         SkASSERT(0);
michael@0:     }
michael@0: 
michael@0:     struct tm * localtime(const time_t *timer) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0:     size_t strftime(char *strDest, size_t maxsize, const char *format,
michael@0:         const struct tm *timeptr ) {
michael@0:         SkASSERT(0);
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0: }
michael@0: #endif
michael@0: 
michael@0: static JSBool
michael@0: global_enumerate(JSContext *cx, JSObject *obj)
michael@0: {
michael@0: #ifdef LAZY_STANDARD_CLASSES
michael@0:     return JS_EnumerateStandardClasses(cx, obj);
michael@0: #else
michael@0:     return JS_TRUE;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: static JSBool
michael@0: global_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags, JSObject **objp)
michael@0: {
michael@0: #ifdef LAZY_STANDARD_CLASSES
michael@0:     if ((flags & JSRESOLVE_ASSIGNING) == 0) {
michael@0:         JSBool resolved;
michael@0: 
michael@0:         if (!JS_ResolveStandardClass(cx, obj, id, &resolved))
michael@0:             return JS_FALSE;
michael@0:         if (resolved) {
michael@0:             *objp = obj;
michael@0:             return JS_TRUE;
michael@0:         }
michael@0:     }
michael@0: #endif
michael@0: 
michael@0: #if defined(SHELL_HACK) && defined(DEBUG) && defined(XP_UNIX)
michael@0:     if ((flags & (JSRESOLVE_QUALIFIED | JSRESOLVE_ASSIGNING)) == 0) {
michael@0:         /*
michael@0:          * Do this expensive hack only for unoptimized Unix builds, which are
michael@0:          * not used for benchmarking.
michael@0:          */
michael@0:         char *path, *comp, *full;
michael@0:         const char *name;
michael@0:         JSBool ok, found;
michael@0:         JSFunction *fun;
michael@0: 
michael@0:         if (!JSVAL_IS_STRING(id))
michael@0:             return JS_TRUE;
michael@0:         path = getenv("PATH");
michael@0:         if (!path)
michael@0:             return JS_TRUE;
michael@0:         path = JS_strdup(cx, path);
michael@0:         if (!path)
michael@0:             return JS_FALSE;
michael@0:         name = JS_GetStringBytes(JSVAL_TO_STRING(id));
michael@0:         ok = JS_TRUE;
michael@0:         for (comp = strtok(path, ":"); comp; comp = strtok(NULL, ":")) {
michael@0:             if (*comp != '\0') {
michael@0:                 full = JS_smprintf("%s/%s", comp, name);
michael@0:                 if (!full) {
michael@0:                     JS_ReportOutOfMemory(cx);
michael@0:                     ok = JS_FALSE;
michael@0:                     break;
michael@0:                 }
michael@0:             } else {
michael@0:                 full = (char *)name;
michael@0:             }
michael@0:             found = (access(full, X_OK) == 0);
michael@0:             if (*comp != '\0')
michael@0:                 free(full);
michael@0:             if (found) {
michael@0:                 fun = JS_DefineFunction(cx, obj, name, Exec, 0, JSPROP_ENUMERATE);
michael@0:                 ok = (fun != NULL);
michael@0:                 if (ok)
michael@0:                     *objp = obj;
michael@0:                 break;
michael@0:             }
michael@0:         }
michael@0:         JS_free(cx, path);
michael@0:         return ok;
michael@0:     }
michael@0: #else
michael@0:     return JS_TRUE;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: JSClass global_class = {
michael@0:     "global", JSCLASS_NEW_RESOLVE,
michael@0:     JS_PropertyStub,  JS_PropertyStub,
michael@0:     JS_PropertyStub,  JS_PropertyStub,
michael@0:     global_enumerate, (JSResolveOp) global_resolve,
michael@0:     JS_ConvertStub,   JS_FinalizeStub
michael@0: };
michael@0: 
michael@0: SkJS::SkJS(void* hwnd) : SkOSWindow(hwnd) {
michael@0:     if ((fRuntime = JS_NewRuntime(0x100000)) == NULL) {
michael@0:         SkASSERT(0);
michael@0:         return;
michael@0:     }
michael@0:     if ((fContext = JS_NewContext(fRuntime, 0x1000)) == NULL) {
michael@0:         SkASSERT(0);
michael@0:         return;
michael@0:     }
michael@0:     ;
michael@0:     if ((fGlobal = JS_NewObject(fContext, &global_class, NULL, NULL)) == NULL) {
michael@0:         SkASSERT(0);
michael@0:         return;
michael@0:     }
michael@0:     if (JS_InitStandardClasses(fContext, fGlobal) == NULL) {
michael@0:         SkASSERT(0);
michael@0:         return;
michael@0:     }
michael@0:     setConfig(SkBitmap::kARGB32_Config);
michael@0:     updateSize();
michael@0:     setVisibleP(true);
michael@0:     InitializeDisplayables(getBitmap(), fContext, fGlobal, NULL);
michael@0: }
michael@0: 
michael@0: SkJS::~SkJS() {
michael@0:     DisposeDisplayables();
michael@0:     JS_DestroyContext(fContext);
michael@0:     JS_DestroyRuntime(fRuntime);
michael@0:     JS_ShutDown();
michael@0: }
michael@0: 
michael@0: SkBool SkJS::EvaluateScript(const char* script, jsval* rVal) {
michael@0:     return JS_EvaluateScript(fContext, fGlobal, script, strlen(script),
michael@0:         "memory" /* no file name */, 0 /* no line number */, rVal);
michael@0: }
michael@0: 
michael@0: SkBool SkJS::ValueToString(jsval value, SkString* string) {
michael@0:      JSString* str = JS_ValueToString(fContext, value);
michael@0:      if (str == NULL)
michael@0:          return false;
michael@0:      string->set(JS_GetStringBytes(str));
michael@0:      return true;
michael@0: }
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0: void SkJS::Test(void* hwnd) {
michael@0:     SkJS js(hwnd);
michael@0:     jsval val;
michael@0:     SkBool success = js.EvaluateScript("22/7", &val);
michael@0:     SkASSERT(success);
michael@0:     SkString string;
michael@0:     success = js.ValueToString(val, &string);
michael@0:     SkASSERT(success);
michael@0:     SkASSERT(strcmp(string.c_str(), "3.142857142857143") == 0);
michael@0:     success = js.EvaluateScript(
michael@0:         "var rect = new rectangle();"
michael@0:         "rect.left = 4;"
michael@0:         "rect.top = 10;"
michael@0:         "rect.right = 20;"
michael@0:         "rect.bottom = 30;"
michael@0:         "rect.width = rect.height + 20;"
michael@0:         "rect.draw();"
michael@0:         , &val);
michael@0:     SkASSERT(success);
michael@0:     success = js.ValueToString(val, &string);
michael@0:     SkASSERT(success);
michael@0: }
michael@0: #endifASSERT(success);