mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-19 18:52:39 +03:00
ce32141057
by splitting javascript engine specific makefiles and source up we avoid having to consider old JSAPI or none code while working on duktape.
390 lines
10 KiB
C
390 lines
10 KiB
C
/*
|
|
* Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
|
|
* Copyright 2015 All of us.
|
|
*
|
|
* This file is part of NetSurf, http://www.netsurf-browser.org/
|
|
*
|
|
* NetSurf is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* NetSurf is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** \file
|
|
* Duktapeish implementation of javascript engine functions.
|
|
*/
|
|
|
|
#include "content/content.h"
|
|
|
|
#include "utils/nsoption.h"
|
|
#include "utils/log.h"
|
|
#include "utils/corestrings.h"
|
|
|
|
#include "javascript/js.h"
|
|
#include "javascript/content.h"
|
|
|
|
#include "duktape/binding.h"
|
|
|
|
#include "duktape.h"
|
|
#include "dukky.h"
|
|
|
|
#include <dom/dom.h>
|
|
|
|
static duk_ret_t dukky_populate_object(duk_context *ctx)
|
|
{
|
|
/* ... obj args protoname nargs */
|
|
int nargs = duk_get_int(ctx, -1);
|
|
duk_pop(ctx);
|
|
/* ... obj args protoname */
|
|
duk_get_global_string(ctx, PROTO_MAGIC);
|
|
/* .. obj args protoname prototab */
|
|
duk_insert(ctx, -2);
|
|
/* ... obj args prototab protoname */
|
|
duk_get_prop(ctx, -2);
|
|
/* ... obj args prototab {proto/undefined} */
|
|
if (duk_is_undefined(ctx, -1)) {
|
|
LOG("RuhRoh, couldn't find a prototype, HTMLUnknownElement it is");
|
|
duk_pop(ctx);
|
|
duk_push_string(ctx, PROTO_NAME(HTMLUNKNOWNELEMENT));
|
|
duk_get_prop(ctx, -2);
|
|
}
|
|
/* ... obj args prototab proto */
|
|
duk_dup(ctx, -1);
|
|
/* ... obj args prototab proto proto */
|
|
duk_set_prototype(ctx, -(nargs+4));
|
|
/* ... obj[proto] args prototab proto */
|
|
duk_get_prop_string(ctx, -1, INIT_MAGIC);
|
|
/* ... obj[proto] args prototab proto initfn */
|
|
duk_insert(ctx, -(nargs+4));
|
|
/* ... initfn obj[proto] args prototab proto */
|
|
duk_pop_2(ctx);
|
|
/* ... initfn obj[proto] args */
|
|
LOG("Call the init function");
|
|
duk_call(ctx, nargs + 1);
|
|
return 1; /* The object */
|
|
}
|
|
|
|
duk_ret_t dukky_create_object(duk_context *ctx, const char *name, int args)
|
|
{
|
|
duk_ret_t ret;
|
|
LOG("name=%s nargs=%d", name+2, args);
|
|
/* ... args */
|
|
duk_push_object(ctx);
|
|
/* ... args obj */
|
|
duk_insert(ctx, -(args+1));
|
|
/* ... obj args */
|
|
duk_push_string(ctx, name);
|
|
/* ... obj args name */
|
|
duk_push_int(ctx, args);
|
|
/* ... obj args name nargs */
|
|
if ((ret = duk_safe_call(ctx, dukky_populate_object, args + 3, 1))
|
|
!= DUK_EXEC_SUCCESS)
|
|
return ret;
|
|
LOG("created");
|
|
return DUK_EXEC_SUCCESS;
|
|
}
|
|
|
|
|
|
|
|
duk_bool_t
|
|
dukky_push_node_stacked(duk_context *ctx)
|
|
{
|
|
int top_at_fail = duk_get_top(ctx) - 2;
|
|
/* ... nodeptr klass */
|
|
duk_get_global_string(ctx, NODE_MAGIC);
|
|
/* ... nodeptr klass nodes */
|
|
duk_dup(ctx, -3);
|
|
/* ... nodeptr klass nodes nodeptr */
|
|
duk_get_prop(ctx, -2);
|
|
/* ... nodeptr klass nodes node/undefined */
|
|
if (duk_is_undefined(ctx, -1)) {
|
|
/* ... nodeptr klass nodes undefined */
|
|
duk_pop(ctx);
|
|
/* ... nodeptr klass nodes */
|
|
duk_push_object(ctx);
|
|
/* ... nodeptr klass nodes obj */
|
|
duk_dup(ctx, -4);
|
|
/* ... nodeptr klass nodes obj nodeptr */
|
|
duk_dup(ctx, -4);
|
|
/* ... nodeptr klass nodes obj nodeptr klass */
|
|
duk_push_int(ctx, 1);
|
|
/* ... nodeptr klass nodes obj nodeptr klass 1 */
|
|
if (duk_safe_call(ctx, dukky_populate_object, 4, 1)
|
|
!= DUK_EXEC_SUCCESS) {
|
|
duk_set_top(ctx, top_at_fail);
|
|
LOG("Boo and also hiss");
|
|
return false;
|
|
}
|
|
/* ... nodeptr klass nodes node */
|
|
duk_dup(ctx, -4);
|
|
/* ... nodeptr klass nodes node nodeptr */
|
|
duk_dup(ctx, -2);
|
|
/* ... nodeptr klass nodes node nodeptr node */
|
|
duk_put_prop(ctx, -4);
|
|
/* ... nodeptr klass nodes node */
|
|
}
|
|
/* ... nodeptr klass nodes node */
|
|
duk_insert(ctx, -4);
|
|
/* ... node nodeptr klass nodes */
|
|
duk_pop_3(ctx);
|
|
/* ... node */
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
dukky_push_node_klass(duk_context *ctx, struct dom_node *node)
|
|
{
|
|
dom_node_type nodetype;
|
|
dom_exception err;
|
|
|
|
err = dom_node_get_node_type(node, &nodetype);
|
|
if (err != DOM_NO_ERR) {
|
|
/* Oh bum, just node then */
|
|
duk_push_string(ctx, PROTO_NAME(NODE));
|
|
return;
|
|
}
|
|
|
|
switch(nodetype) {
|
|
case DOM_ELEMENT_NODE: {
|
|
dom_string *namespace, *tag;
|
|
err = dom_node_get_namespace(node, &namespace);
|
|
if (err != DOM_NO_ERR) {
|
|
/* Feck it, element */
|
|
LOG("dom_node_get_namespace() failed");
|
|
duk_push_string(ctx, PROTO_NAME(ELEMENT));
|
|
break;
|
|
}
|
|
if (namespace == NULL) {
|
|
/* No namespace, -> element */
|
|
LOG("no namespace");
|
|
duk_push_string(ctx, PROTO_NAME(ELEMENT));
|
|
break;
|
|
}
|
|
|
|
if (dom_string_isequal(namespace, corestring_dom_html_namespace) == false) {
|
|
/* definitely not an HTML element of some kind */
|
|
duk_push_string(ctx, PROTO_NAME(ELEMENT));
|
|
dom_string_unref(namespace);
|
|
break;
|
|
}
|
|
dom_string_unref(namespace);
|
|
|
|
err = dom_node_get_node_name(node, &tag);
|
|
if (err != DOM_NO_ERR) {
|
|
duk_push_string(ctx, PROTO_NAME(HTMLUNKNOWNELEMENT));
|
|
break;
|
|
}
|
|
|
|
duk_push_string(ctx, PROTO_NAME(HTML));
|
|
duk_push_lstring(ctx, dom_string_data(tag), dom_string_length(tag));
|
|
dom_string_unref(tag);
|
|
duk_push_string(ctx, "ELEMENT");
|
|
duk_concat(ctx, 3);
|
|
|
|
break;
|
|
}
|
|
case DOM_TEXT_NODE:
|
|
duk_push_string(ctx, PROTO_NAME(TEXT));
|
|
break;
|
|
case DOM_COMMENT_NODE:
|
|
duk_push_string(ctx, PROTO_NAME(COMMENT));
|
|
break;
|
|
case DOM_DOCUMENT_NODE:
|
|
duk_push_string(ctx, PROTO_NAME(DOCUMENT));
|
|
break;
|
|
case DOM_ATTRIBUTE_NODE:
|
|
case DOM_PROCESSING_INSTRUCTION_NODE:
|
|
case DOM_DOCUMENT_TYPE_NODE:
|
|
case DOM_DOCUMENT_FRAGMENT_NODE:
|
|
case DOM_NOTATION_NODE:
|
|
case DOM_ENTITY_REFERENCE_NODE:
|
|
case DOM_ENTITY_NODE:
|
|
case DOM_CDATA_SECTION_NODE:
|
|
default:
|
|
/* Oh bum, just node then */
|
|
duk_push_string(ctx, PROTO_NAME(NODE));
|
|
}
|
|
}
|
|
|
|
duk_bool_t
|
|
dukky_push_node(duk_context *ctx, struct dom_node *node)
|
|
{
|
|
LOG("Pushing node %p", node);
|
|
/* First check if we can find the node */
|
|
/* ... */
|
|
duk_get_global_string(ctx, NODE_MAGIC);
|
|
/* ... nodes */
|
|
duk_push_pointer(ctx, node);
|
|
/* ... nodes nodeptr */
|
|
duk_get_prop(ctx, -2);
|
|
/* ... nodes node/undefined */
|
|
if (!duk_is_undefined(ctx, -1)) {
|
|
/* ... nodes node */
|
|
duk_insert(ctx, -2);
|
|
/* ... node nodes */
|
|
duk_pop(ctx);
|
|
/* ... node */
|
|
LOG("Found it memoised");
|
|
return true;
|
|
}
|
|
/* ... nodes undefined */
|
|
duk_pop_2(ctx);
|
|
/* ... */
|
|
/* We couldn't, so now we determine the node type and then
|
|
* we ask for it to be created
|
|
*/
|
|
duk_push_pointer(ctx, node);
|
|
/* ... nodeptr */
|
|
dukky_push_node_klass(ctx, node);
|
|
/* ... nodeptr klass */
|
|
return dukky_push_node_stacked(ctx);
|
|
}
|
|
|
|
static duk_ret_t
|
|
dukky_bad_constructor(duk_context *ctx)
|
|
{
|
|
duk_error(ctx, DUK_ERR_ERROR, "Bad constructor");
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
dukky_inject_not_ctr(duk_context *ctx, int idx, const char *name)
|
|
{
|
|
/* ... p[idx] ... proto */
|
|
duk_push_c_function(ctx, dukky_bad_constructor, 0);
|
|
/* ... p[idx] ... proto cons */
|
|
duk_insert(ctx, -2);
|
|
/* ... p[idx] ... cons proto */
|
|
duk_put_prop_string(ctx, -2, "prototype");
|
|
/* ... p[idx] ... cons[proto] */
|
|
duk_put_prop_string(ctx, idx, name);
|
|
/* ... p ... */
|
|
return;
|
|
}
|
|
|
|
/**************************************** js.h ******************************/
|
|
struct jscontext {
|
|
duk_context *ctx;
|
|
duk_context *thread;
|
|
};
|
|
|
|
#define CTX (ctx->thread)
|
|
|
|
void js_initialise(void)
|
|
{
|
|
/** TODO: Forces JS on for our testing, needs changing before a release
|
|
* lest we incur the wrath of others.
|
|
*/
|
|
nsoption_set_bool(enable_javascript, true);
|
|
javascript_init();
|
|
}
|
|
|
|
void js_finalise(void)
|
|
{
|
|
/* NADA for now */
|
|
}
|
|
|
|
#define DUKKY_NEW_PROTOTYPE(klass, uklass, klass_name) \
|
|
dukky_create_prototype(ctx, dukky_##klass##___proto, PROTO_NAME(uklass), klass_name)
|
|
|
|
nserror js_newcontext(int timeout, jscallback *cb, void *cbctx,
|
|
jscontext **jsctx)
|
|
{
|
|
duk_context *ctx;
|
|
jscontext *ret = calloc(1, sizeof(*ret));
|
|
*jsctx = NULL;
|
|
LOG("Creating new duktape javascript context");
|
|
if (ret == NULL) return NSERROR_NOMEM;
|
|
ctx = ret->ctx = duk_create_heap_default();
|
|
if (ret->ctx == NULL) { free(ret); return NSERROR_NOMEM; }
|
|
/* Create the prototype stuffs */
|
|
duk_push_global_object(ctx);
|
|
duk_push_boolean(ctx, true);
|
|
duk_put_prop_string(ctx, -2, "protos");
|
|
duk_put_global_string(ctx, PROTO_MAGIC);
|
|
/* Create prototypes here */
|
|
dukky_create_prototypes(ctx);
|
|
|
|
*jsctx = ret;
|
|
return NSERROR_OK;
|
|
}
|
|
|
|
void js_destroycontext(jscontext *ctx)
|
|
{
|
|
LOG("Destroying duktape javascript context");
|
|
duk_destroy_heap(ctx->ctx);
|
|
free(ctx);
|
|
}
|
|
|
|
jsobject *js_newcompartment(jscontext *ctx, void *win_priv, void *doc_priv)
|
|
{
|
|
assert(ctx != NULL);
|
|
/* Pop any active thread off */
|
|
LOG("Yay, new compartment, win_priv=%p, doc_priv=%p", win_priv, doc_priv);
|
|
duk_set_top(ctx->ctx, 0);
|
|
duk_push_thread(ctx->ctx);
|
|
ctx->thread = duk_require_context(ctx->ctx, -1);
|
|
duk_push_int(CTX, 0);
|
|
duk_push_int(CTX, 1);
|
|
duk_push_int(CTX, 2);
|
|
/* Manufacture a Window object */
|
|
/* win_priv is a browser_window, doc_priv is an html content struct */
|
|
duk_push_pointer(CTX, win_priv);
|
|
duk_push_pointer(CTX, doc_priv);
|
|
dukky_create_object(CTX, PROTO_NAME(WINDOW), 2);
|
|
duk_push_global_object(CTX);
|
|
duk_put_prop_string(CTX, -2, PROTO_MAGIC);
|
|
duk_set_global_object(CTX);
|
|
|
|
/* Now we need to prepare our node mapping table */
|
|
duk_push_object(CTX);
|
|
duk_put_global_string(CTX, NODE_MAGIC);
|
|
|
|
return (jsobject *)ctx;
|
|
}
|
|
|
|
static duk_ret_t eval_top_string(duk_context *ctx)
|
|
{
|
|
duk_eval(ctx);
|
|
return 0;
|
|
}
|
|
|
|
bool js_exec(jscontext *ctx, const char *txt, size_t txtlen)
|
|
{
|
|
assert(ctx);
|
|
if (txt == NULL || txtlen == 0) return false;
|
|
duk_set_top(CTX, 0);
|
|
duk_push_lstring(CTX, txt, txtlen);
|
|
|
|
if (duk_safe_call(CTX, eval_top_string, 1, 1) == DUK_EXEC_ERROR) {
|
|
duk_get_prop_string(CTX, 0, "name");
|
|
duk_get_prop_string(CTX, 0, "message");
|
|
duk_get_prop_string(CTX, 0, "fileName");
|
|
duk_get_prop_string(CTX, 0, "lineNumber");
|
|
duk_get_prop_string(CTX, 0, "stack");
|
|
LOG("Uncaught error in JS: %s: %s", duk_safe_to_string(CTX, 1),
|
|
duk_safe_to_string(CTX, 2));
|
|
LOG(" was at: %s line %s", duk_safe_to_string(CTX, 3),
|
|
duk_safe_to_string(CTX, 4));
|
|
LOG(" Stack trace: %s", duk_safe_to_string(CTX, 5));
|
|
return false;
|
|
}
|
|
if (duk_get_top(CTX) == 0) duk_push_boolean(CTX, false);
|
|
LOG("Returning %s", duk_get_boolean(CTX, 0) ? "true" : "false");
|
|
return duk_get_boolean(CTX, 0);
|
|
}
|
|
|
|
bool js_fire_event(jscontext *ctx, const char *type, struct dom_document *doc, struct dom_node *target)
|
|
{
|
|
/* La La La */
|
|
LOG("Oh dear, an event: %s", type);
|
|
return true;
|
|
}
|