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/* libs/graphics/xml/SkJS.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <jsapi.h>
#include "SkJS.h"
#include "SkString.h"
#ifdef _WIN32_WCE
extern "C" {
void abort() {
SkASSERT(0);
}
unsigned int _control87(unsigned int _new, unsigned int mask ) {
SkASSERT(0);
return 0;
}
time_t mktime(struct tm *timeptr ) {
SkASSERT(0);
return 0;
}
// int errno;
char *strdup(const char *) {
SkASSERT(0);
return 0;
}
char *strerror(int errnum) {
SkASSERT(0);
return 0;
}
int isatty(void* fd) {
SkASSERT(0);
return 0;
}
int putenv(const char *envstring) {
SkASSERT(0);
return 0;
}
char *getenv(const char *varname) {
SkASSERT(0);
return 0;
}
void GetSystemTimeAsFileTime(LPFILETIME lpSystemTimeAsFileTime) {
SkASSERT(0);
}
struct tm * localtime(const time_t *timer) {
SkASSERT(0);
return 0;
}
size_t strftime(char *strDest, size_t maxsize, const char *format,
const struct tm *timeptr ) {
SkASSERT(0);
return 0;
}
}
#endif
static JSBool
global_enumerate(JSContext *cx, JSObject *obj)
{
#ifdef LAZY_STANDARD_CLASSES
return JS_EnumerateStandardClasses(cx, obj);
#else
return JS_TRUE;
#endif
}
static JSBool
global_resolve(JSContext *cx, JSObject *obj, jsval id, uintN flags, JSObject **objp)
{
#ifdef LAZY_STANDARD_CLASSES
if ((flags & JSRESOLVE_ASSIGNING) == 0) {
JSBool resolved;
if (!JS_ResolveStandardClass(cx, obj, id, &resolved))
return JS_FALSE;
if (resolved) {
*objp = obj;
return JS_TRUE;
}
}
#endif
#if defined(SHELL_HACK) && defined(DEBUG) && defined(XP_UNIX)
if ((flags & (JSRESOLVE_QUALIFIED | JSRESOLVE_ASSIGNING)) == 0) {
/*
* Do this expensive hack only for unoptimized Unix builds, which are
* not used for benchmarking.
*/
char *path, *comp, *full;
const char *name;
JSBool ok, found;
JSFunction *fun;
if (!JSVAL_IS_STRING(id))
return JS_TRUE;
path = getenv("PATH");
if (!path)
return JS_TRUE;
path = JS_strdup(cx, path);
if (!path)
return JS_FALSE;
name = JS_GetStringBytes(JSVAL_TO_STRING(id));
ok = JS_TRUE;
for (comp = strtok(path, ":"); comp; comp = strtok(NULL, ":")) {
if (*comp != '\0') {
full = JS_smprintf("%s/%s", comp, name);
if (!full) {
JS_ReportOutOfMemory(cx);
ok = JS_FALSE;
break;
}
} else {
full = (char *)name;
}
found = (access(full, X_OK) == 0);
if (*comp != '\0')
free(full);
if (found) {
fun = JS_DefineFunction(cx, obj, name, Exec, 0, JSPROP_ENUMERATE);
ok = (fun != NULL);
if (ok)
*objp = obj;
break;
}
}
JS_free(cx, path);
return ok;
}
#else
return JS_TRUE;
#endif
}
JSClass global_class = {
"global", JSCLASS_NEW_RESOLVE,
JS_PropertyStub, JS_PropertyStub,
JS_PropertyStub, JS_PropertyStub,
global_enumerate, (JSResolveOp) global_resolve,
JS_ConvertStub, JS_FinalizeStub
};
SkJS::SkJS(void* hwnd) : SkOSWindow(hwnd) {
if ((fRuntime = JS_NewRuntime(0x100000)) == NULL) {
SkASSERT(0);
return;
}
if ((fContext = JS_NewContext(fRuntime, 0x1000)) == NULL) {
SkASSERT(0);
return;
}
;
if ((fGlobal = JS_NewObject(fContext, &global_class, NULL, NULL)) == NULL) {
SkASSERT(0);
return;
}
if (JS_InitStandardClasses(fContext, fGlobal) == NULL) {
SkASSERT(0);
return;
}
setConfig(SkBitmap::kARGB32_Config);
updateSize();
setVisibleP(true);
InitializeDisplayables(getBitmap(), fContext, fGlobal, NULL);
}
SkJS::~SkJS() {
DisposeDisplayables();
JS_DestroyContext(fContext);
JS_DestroyRuntime(fRuntime);
JS_ShutDown();
}
SkBool SkJS::EvaluateScript(const char* script, jsval* rVal) {
return JS_EvaluateScript(fContext, fGlobal, script, strlen(script),
"memory" /* no file name */, 0 /* no line number */, rVal);
}
SkBool SkJS::ValueToString(jsval value, SkString* string) {
JSString* str = JS_ValueToString(fContext, value);
if (str == NULL)
return false;
string->set(JS_GetStringBytes(str));
return true;
}
#ifdef SK_DEBUG
void SkJS::Test(void* hwnd) {
SkJS js(hwnd);
jsval val;
SkBool success = js.EvaluateScript("22/7", &val);
SkASSERT(success);
SkString string;
success = js.ValueToString(val, &string);
SkASSERT(success);
SkASSERT(strcmp(string.c_str(), "3.142857142857143") == 0);
success = js.EvaluateScript(
"var rect = new rectangle();"
"rect.left = 4;"
"rect.top = 10;"
"rect.right = 20;"
"rect.bottom = 30;"
"rect.width = rect.height + 20;"
"rect.draw();"
, &val);
SkASSERT(success);
success = js.ValueToString(val, &string);
SkASSERT(success);
}
#endifASSERT(success);
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