mirror of
https://github.com/rkd77/elinks.git
synced 2024-12-04 14:46:47 -05:00
405 lines
8.6 KiB
C
405 lines
8.6 KiB
C
/* The Quickjs ECMAScript backend. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "elinks.h"
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#include "bfu/dialog.h"
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#include "cache/cache.h"
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#include "config/options.h"
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#include "cookies/cookies.h"
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#include "dialogs/menu.h"
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#include "dialogs/status.h"
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#include "document/html/frames.h"
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#include "document/xml/renderer.h"
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#include "document/xml/renderer2.h"
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#include "document/document.h"
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#include "document/forms.h"
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#include "document/renderer.h"
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#include "document/view.h"
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#include "ecmascript/ecmascript.h"
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#include "ecmascript/quickjs.h"
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#include "ecmascript/quickjs/console.h"
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#include "ecmascript/quickjs/document.h"
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#include "ecmascript/quickjs/element.h"
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#include "ecmascript/quickjs/heartbeat.h"
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#include "ecmascript/quickjs/history.h"
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#include "ecmascript/quickjs/localstorage.h"
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#include "ecmascript/quickjs/location.h"
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#include "ecmascript/quickjs/navigator.h"
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#include "ecmascript/quickjs/screen.h"
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#include "ecmascript/quickjs/unibar.h"
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#include "ecmascript/quickjs/window.h"
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#include "intl/libintl.h"
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#include "main/select.h"
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#include "osdep/newwin.h"
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#include "osdep/sysname.h"
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#include "protocol/http/http.h"
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#include "protocol/uri.h"
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#include "session/history.h"
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#include "session/location.h"
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#include "session/session.h"
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#include "session/task.h"
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#include "terminal/tab.h"
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#include "terminal/terminal.h"
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#include "util/conv.h"
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#include "util/string.h"
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#include "viewer/text/draw.h"
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#include "viewer/text/form.h"
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#include "viewer/text/link.h"
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#include "viewer/text/view.h"
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#include "viewer/text/vs.h"
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#include <libxml++/libxml++.h>
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/*** Global methods */
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#if 0
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/* TODO? Are there any which need to be implemented? */
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static int js_module_init_ok;
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static void
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error_reporter(JSContext *ctx, JSErrorReport *report)
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{
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JS::Realm *comp = js::GetContextRealm(ctx);
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if (!comp) {
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return;
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}
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struct ecmascript_interpreter *interpreter = JS::GetRealmPrivate(comp);
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struct session *ses = interpreter->vs->doc_view->session;
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struct terminal *term;
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struct string msg;
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char *ptr;
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size_t size;
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FILE *f;
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assert(interpreter && interpreter->vs && interpreter->vs->doc_view
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&& ses && ses->tab);
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if_assert_failed goto reported;
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term = ses->tab->term;
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#ifdef CONFIG_LEDS
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set_led_value(ses->status.ecmascript_led, 'J');
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#endif
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if (!get_opt_bool("ecmascript.error_reporting", ses))
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goto reported;
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f = open_memstream(&ptr, &size);
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if (f) {
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JS::PrintError(ctx, f, report, true/*reportWarnings*/);
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fclose(f);
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if (!init_string(&msg)) {
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free(ptr);
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} else {
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add_to_string(&msg,
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_("A script embedded in the current document raised the following:\n", term));
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add_bytes_to_string(&msg, ptr, size);
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free(ptr);
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info_box(term, MSGBOX_FREE_TEXT, N_("JavaScript Error"), ALIGN_CENTER, msg.source);
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}
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}
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reported:
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JS_ClearPendingException(ctx);
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}
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#endif
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static void
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quickjs_init(struct module *xxx)
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{
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//js_module_init_ok = spidermonkey_runtime_addref();
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}
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static void
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quickjs_done(struct module *xxx)
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{
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// if (js_module_init_ok)
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// spidermonkey_runtime_release();
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}
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void *
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quickjs_get_interpreter(struct ecmascript_interpreter *interpreter)
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{
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JSContext *ctx;
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// JSObject *console_obj, *document_obj, /* *forms_obj,*/ *history_obj, *location_obj,
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// *statusbar_obj, *menubar_obj, *navigator_obj, *localstorage_obj, *screen_obj;
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assert(interpreter);
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// if (!js_module_init_ok) return NULL;
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JSRuntime *rt = JS_NewRuntime();
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if (!rt) {
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return nullptr;
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}
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JS_SetMemoryLimit(rt, 64 * 1024 * 1024);
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JS_SetGCThreshold(rt, 16 * 1024 * 1024);
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ctx = JS_NewContext(rt);
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if (!ctx) {
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JS_FreeRuntime(rt);
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return nullptr;
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}
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interpreter->backend_data = ctx;
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JS_SetContextOpaque(ctx, interpreter);
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// JS::SetWarningReporter(ctx, error_reporter);
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JS_SetInterruptHandler(rt, js_heartbeat_callback, interpreter);
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// JS::RealmOptions options;
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// JS::RootedObject window_obj(ctx, JS_NewGlobalObject(ctx, &window_class, NULL, JS::FireOnNewGlobalHook, options));
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js_window_init(ctx);
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js_screen_init(ctx);
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js_unibar_init(ctx);
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js_navigator_init(ctx);
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js_history_init(ctx);
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js_console_init(ctx);
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js_localstorage_init(ctx);
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js_element_init(ctx);
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interpreter->document_obj = js_document_init(ctx);
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interpreter->location_obj = js_location_init(ctx);
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return ctx;
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}
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void
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quickjs_put_interpreter(struct ecmascript_interpreter *interpreter)
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{
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JSContext *ctx;
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assert(interpreter);
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ctx = (JSContext *)interpreter->backend_data;
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JS_FreeContext(ctx);
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interpreter->backend_data = nullptr;
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interpreter->ac = nullptr;
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interpreter->ac2 = nullptr;
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}
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static void
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js_dump_obj(JSContext *ctx, FILE *f, JSValueConst val)
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{
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const char *str;
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str = JS_ToCString(ctx, val);
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if (str) {
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fprintf(f, "%s\n", str);
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JS_FreeCString(ctx, str);
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} else {
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fprintf(f, "[exception]\n");
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}
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}
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static void
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js_dump_error1(JSContext *ctx, FILE *f, JSValueConst exception_val)
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{
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JSValue val;
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bool is_error;
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is_error = JS_IsError(ctx, exception_val);
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js_dump_obj(ctx, f, exception_val);
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if (is_error) {
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val = JS_GetPropertyStr(ctx, exception_val, "stack");
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if (!JS_IsUndefined(val)) {
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js_dump_obj(ctx, f, val);
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}
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JS_FreeValue(ctx, val);
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}
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}
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static void
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js_dump_error(JSContext *ctx, FILE *f)
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{
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JSValue exception_val;
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exception_val = JS_GetException(ctx);
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js_dump_error1(ctx, f, exception_val);
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JS_FreeValue(ctx, exception_val);
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}
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static void
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error_reporter(struct ecmascript_interpreter *interpreter, JSContext *ctx)
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{
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struct session *ses = interpreter->vs->doc_view->session;
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struct terminal *term;
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struct string msg;
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char *ptr;
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size_t size;
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FILE *f;
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assert(interpreter && interpreter->vs && interpreter->vs->doc_view
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&& ses && ses->tab);
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if_assert_failed return;
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term = ses->tab->term;
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#ifdef CONFIG_LEDS
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set_led_value(ses->status.ecmascript_led, 'J');
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#endif
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if (!get_opt_bool("ecmascript.error_reporting", ses)) {
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return;
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}
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f = open_memstream(&ptr, &size);
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if (f) {
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js_dump_error(ctx, f);
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fclose(f);
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if (!init_string(&msg)) {
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free(ptr);
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} else {
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add_to_string(&msg,
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_("A script embedded in the current document raised the following:\n", term));
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add_bytes_to_string(&msg, ptr, size);
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free(ptr);
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info_box(term, MSGBOX_FREE_TEXT, N_("JavaScript Error"), ALIGN_CENTER, msg.source);
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}
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}
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}
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void
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quickjs_eval(struct ecmascript_interpreter *interpreter,
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struct string *code, struct string *ret)
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{
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JSContext *ctx;
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assert(interpreter);
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// if (!js_module_init_ok) {
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// return;
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// }
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ctx = (JSContext *)interpreter->backend_data;
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interpreter->heartbeat = add_heartbeat(interpreter);
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interpreter->ret = ret;
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JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
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done_heartbeat(interpreter->heartbeat);
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if (JS_IsException(r)) {
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error_reporter(interpreter, ctx);
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}
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}
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void
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quickjs_call_function(struct ecmascript_interpreter *interpreter,
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JSValueConst fun, struct string *ret)
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{
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JSContext *ctx;
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assert(interpreter);
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// if (!js_module_init_ok) {
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// return;
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// }
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ctx = (JSContext *)interpreter->backend_data;
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interpreter->heartbeat = add_heartbeat(interpreter);
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interpreter->ret = ret;
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JSValue r = JS_Call(ctx, fun, JS_GetGlobalObject(ctx), 0, nullptr);
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done_heartbeat(interpreter->heartbeat);
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if (JS_IsException(r)) {
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error_reporter(interpreter, ctx);
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}
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}
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char *
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quickjs_eval_stringback(struct ecmascript_interpreter *interpreter,
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struct string *code)
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{
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JSContext *ctx;
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assert(interpreter);
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// if (!js_module_init_ok) {
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// return;
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// }
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ctx = (JSContext *)interpreter->backend_data;
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interpreter->heartbeat = add_heartbeat(interpreter);
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interpreter->ret = nullptr;
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JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
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done_heartbeat(interpreter->heartbeat);
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if (JS_IsNull(r)) {
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return nullptr;
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}
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if (JS_IsException(r)) {
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error_reporter(interpreter, ctx);
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}
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const char *str;
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char *string;
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size_t len;
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str = JS_ToCStringLen(ctx, &len, r);
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if (!str) {
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return nullptr;
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}
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string = stracpy(str);
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JS_FreeCString(ctx, str);
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return string;
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}
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int
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quickjs_eval_boolback(struct ecmascript_interpreter *interpreter,
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struct string *code)
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{
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JSContext *ctx;
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assert(interpreter);
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// if (!js_module_init_ok) {
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// return;
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// }
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ctx = (JSContext *)interpreter->backend_data;
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interpreter->heartbeat = add_heartbeat(interpreter);
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interpreter->ret = nullptr;
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JSValue r = JS_Eval(ctx, code->source, code->length, "", 0);
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done_heartbeat(interpreter->heartbeat);
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if (JS_IsNull(r)) {
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return -1;
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}
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if (JS_IsUndefined(r)) {
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return -1;
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}
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int ret = -1;
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JS_ToInt32(ctx, &ret, r);
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return ret;
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}
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struct module quickjs_module = struct_module(
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/* name: */ N_("QuickJS"),
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/* options: */ NULL,
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/* events: */ NULL,
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/* submodules: */ NULL,
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/* data: */ NULL,
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/* init: */ quickjs_init,
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/* done: */ quickjs_done
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);
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