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elinks/src/ecmascript/mujs.cpp
2022-08-26 16:56:28 +02:00

396 lines
8.4 KiB
C++

/* The mujs ECMAScript backend. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "elinks.h"
#include "bfu/dialog.h"
#include "cache/cache.h"
#include "config/options.h"
#include "cookies/cookies.h"
#include "dialogs/menu.h"
#include "dialogs/status.h"
#include "document/html/frames.h"
#include "document/xml/renderer.h"
#include "document/xml/renderer2.h"
#include "document/document.h"
#include "document/forms.h"
#include "document/renderer.h"
#include "document/view.h"
#include "ecmascript/ecmascript.h"
#include "ecmascript/mujs.h"
#include "ecmascript/mujs/console.h"
#include "ecmascript/mujs/document.h"
#include "ecmascript/mujs/element.h"
#include "ecmascript/mujs/history.h"
#include "ecmascript/mujs/localstorage.h"
#include "ecmascript/mujs/location.h"
#include "ecmascript/mujs/navigator.h"
#include "ecmascript/mujs/screen.h"
#include "ecmascript/mujs/unibar.h"
#include "ecmascript/mujs/window.h"
#include "intl/libintl.h"
#include "main/select.h"
#include "osdep/newwin.h"
#include "osdep/sysname.h"
#include "protocol/http/http.h"
#include "protocol/uri.h"
#include "session/history.h"
#include "session/location.h"
#include "session/session.h"
#include "session/task.h"
#include "terminal/tab.h"
#include "terminal/terminal.h"
#include "util/conv.h"
#include "util/string.h"
#include "viewer/text/draw.h"
#include "viewer/text/form.h"
#include "viewer/text/link.h"
#include "viewer/text/view.h"
#include "viewer/text/vs.h"
#include <libxml++/libxml++.h>
/*** Global methods */
static void
mujs_init(struct module *xxx)
{
//js_module_init_ok = spidermonkey_runtime_addref();
}
static void
mujs_done(struct module *xxx)
{
// if (js_module_init_ok)
// spidermonkey_runtime_release();
}
void *
mujs_get_interpreter(struct ecmascript_interpreter *interpreter)
{
assert(interpreter);
js_State *J = js_newstate(NULL, NULL, JS_STRICT);
if (!J) {
return NULL;
}
interpreter->backend_data = J;
js_setcontext(J, interpreter);
mjs_window_init(J);
mjs_screen_init(J);
mjs_unibar_init(J);
mjs_navigator_init(J);
mjs_history_init(J);
mjs_console_init(J);
mjs_localstorage_init(J);
mjs_element_init(J);
mjs_location_init(J);
mjs_document_init(J);
return J;
#if 0
JSContext *ctx;
// JSObject *console_obj, *document_obj, /* *forms_obj,*/ *history_obj, *location_obj,
// *statusbar_obj, *menubar_obj, *navigator_obj, *localstorage_obj, *screen_obj;
assert(interpreter);
// if (!js_module_init_ok) return NULL;
JSRuntime *rt = JS_NewRuntime();
if (!rt) {
return nullptr;
}
JS_SetMemoryLimit(rt, 64 * 1024 * 1024);
JS_SetGCThreshold(rt, 16 * 1024 * 1024);
ctx = JS_NewContext(rt);
if (!ctx) {
JS_FreeRuntime(rt);
return nullptr;
}
interpreter->backend_data = ctx;
JS_SetContextOpaque(ctx, interpreter);
// JS::SetWarningReporter(ctx, error_reporter);
JS_SetInterruptHandler(rt, js_heartbeat_callback, interpreter);
// JS::RealmOptions options;
// JS::RootedObject window_obj(ctx, JS_NewGlobalObject(ctx, &window_class, NULL, JS::FireOnNewGlobalHook, options));
js_window_init(ctx);
js_screen_init(ctx);
js_unibar_init(ctx);
js_navigator_init(ctx);
js_history_init(ctx);
js_console_init(ctx);
js_localstorage_init(ctx);
js_element_init(ctx);
interpreter->document_obj = js_document_init(ctx);
interpreter->location_obj = js_location_init(ctx);
return ctx;
#endif
}
void
mujs_put_interpreter(struct ecmascript_interpreter *interpreter)
{
assert(interpreter);
js_State *J = (js_State *)interpreter->backend_data;
js_freestate(J);
interpreter->backend_data = NULL;
#if 0
JSContext *ctx;
assert(interpreter);
ctx = (JSContext *)interpreter->backend_data;
JS_FreeContext(ctx);
interpreter->backend_data = nullptr;
interpreter->ac = nullptr;
interpreter->ac2 = nullptr;
#endif
}
#if 0
static void
error_reporter(struct ecmascript_interpreter *interpreter, JSContext *ctx)
{
struct session *ses = interpreter->vs->doc_view->session;
struct terminal *term;
struct string msg;
struct string f;
assert(interpreter && interpreter->vs && interpreter->vs->doc_view
&& ses && ses->tab);
if_assert_failed return;
term = ses->tab->term;
#ifdef CONFIG_LEDS
set_led_value(ses->status.ecmascript_led, 'J');
#endif
if (!get_opt_bool("ecmascript.error_reporting", ses)) {
return;
}
if (init_string(&f)) {
js_dump_error(ctx, &f);
if (!init_string(&msg)) {
done_string(&f);
return;
} else {
add_to_string(&msg,
_("A script embedded in the current document raised the following:\n", term));
add_string_to_string(&msg, &f);
done_string(&f);
info_box(term, MSGBOX_FREE_TEXT, N_("JavaScript Error"), ALIGN_CENTER, msg.source);
}
}
}
#endif
void
mujs_eval(struct ecmascript_interpreter *interpreter,
struct string *code, struct string *ret)
{
assert(interpreter);
js_State *J = (js_State *)interpreter->backend_data;
interpreter->ret = ret;
js_dostring(J, code->source);
#if 0
JSContext *ctx;
assert(interpreter);
// if (!js_module_init_ok) {
// return;
// }
ctx = (JSContext *)interpreter->backend_data;
interpreter->heartbeat = add_heartbeat(interpreter);
interpreter->ret = ret;
JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
done_heartbeat(interpreter->heartbeat);
if (JS_IsException(r)) {
error_reporter(interpreter, ctx);
}
#endif
}
void
mujs_call_function(struct ecmascript_interpreter *interpreter,
const char *fun, struct string *ret)
{
js_State *J = (js_State *)interpreter->backend_data;
interpreter->ret = ret;
js_getregistry(J, fun); /* retrieve the js function from the registry */
js_pushnull(J);
js_pcall(J, 0);
js_pop(J, 1);
}
char *
mujs_eval_stringback(struct ecmascript_interpreter *interpreter,
struct string *code)
{
char *ret = NULL;
assert(interpreter);
js_State *J = (js_State *)interpreter->backend_data;
interpreter->ret = NULL;
js_loadstring(J, "[script]", code->source);
js_pushundefined(J);
js_pcall(J, 0);
if (js_isundefined(J, -1)) {
ret = NULL;
} else if (js_isnull(J, -1)) {
ret = NULL;
} else {
ret = stracpy(js_tostring(J, -1));
}
js_pop(J, 1);
return ret;
#if 0
JSContext *ctx;
assert(interpreter);
// if (!js_module_init_ok) {
// return;
// }
ctx = (JSContext *)interpreter->backend_data;
interpreter->heartbeat = add_heartbeat(interpreter);
interpreter->ret = nullptr;
JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
done_heartbeat(interpreter->heartbeat);
if (JS_IsNull(r)) {
return nullptr;
}
if (JS_IsException(r)) {
error_reporter(interpreter, ctx);
}
const char *str;
char *string;
size_t len;
str = JS_ToCStringLen(ctx, &len, r);
if (!str) {
return nullptr;
}
string = stracpy(str);
JS_FreeCString(ctx, str);
return string;
#endif
}
int
mujs_eval_boolback(struct ecmascript_interpreter *interpreter,
struct string *code)
{
int ret = 0;
assert(interpreter);
js_State *J = (js_State *)interpreter->backend_data;
interpreter->ret = NULL;
js_loadstring(J, "[script]", code->source);
js_pushundefined(J);
js_pcall(J, 0);
if (js_isundefined(J, -1)) {
ret = -1;
} else if (js_isnull(J, -1)) {
ret = -1;
} else {
ret = js_toint32(J, -1);
}
js_pop(J, 1);
return ret;
#if 0
JSContext *ctx;
assert(interpreter);
// if (!js_module_init_ok) {
// return;
// }
ctx = (JSContext *)interpreter->backend_data;
interpreter->heartbeat = add_heartbeat(interpreter);
interpreter->ret = nullptr;
JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
done_heartbeat(interpreter->heartbeat);
if (JS_IsNull(r)) {
return -1;
}
if (JS_IsUndefined(r)) {
return -1;
}
int ret = -1;
JS_ToInt32(ctx, &ret, r);
return ret;
#endif
}
void
addmethod(js_State *J, const char *name, js_CFunction fun, int n)
{
const char *realname = strchr(name, '.');
realname = realname ? realname + 1 : name;
js_newcfunction(J, fun, name, n);
js_defproperty(J, -2, realname, JS_READONLY | JS_DONTENUM | JS_DONTCONF);
}
void addproperty(js_State *J, const char *name, js_CFunction getfun, js_CFunction setfun)
{
const char *realname = strchr(name, '.');
realname = realname ? realname + 1 : name;
js_newcfunction(J, getfun, name, 0);
if (setfun) {
js_newcfunction(J, setfun, name, 1);
} else {
js_pushnull(J);
}
js_defaccessor(J, -3, realname, JS_READONLY | JS_DONTENUM | JS_DONTCONF);
}
struct module mujs_module = struct_module(
/* name: */ N_("mujs"),
/* options: */ NULL,
/* events: */ NULL,
/* submodules: */ NULL,
/* data: */ NULL,
/* init: */ mujs_init,
/* done: */ mujs_done
);