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[document] renderer.cpp -> renderer.c

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Moved ecmascript code to ecmascript-c.cpp
This commit is contained in:
Witold Filipczyk 2023-11-26 19:47:59 +01:00
parent 742d30419f
commit 424466740c
5 changed files with 207 additions and 211 deletions
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2
src/document/Makefile
View File

@ -7,6 +7,6 @@ SUBDIRS-$(CONFIG_LIBDOM) += libdom
SUBDIRS = gemini html plain
OBJS = docdata.o document.obj format.o forms.o options.o refresh.o renderer.obj
OBJS = docdata.o document.obj format.o forms.o options.o refresh.o renderer.o
include $(top_srcdir)/Makefile.lib

2
src/document/meson.build
View File

@ -10,4 +10,4 @@ endif
subdir('gemini')
subdir('html')
subdir('plain')
srcs += files('docdata.c', 'document.cpp', 'format.c', 'forms.c', 'options.c', 'refresh.c', 'renderer.cpp')
srcs += files('docdata.c', 'document.cpp', 'format.c', 'forms.c', 'options.c', 'refresh.c', 'renderer.c')

211
src/document/renderer.cpp → src/document/renderer.c
View File

@ -28,10 +28,7 @@
#include "document/renderer.h"
#include "document/view.h"
#ifdef CONFIG_ECMASCRIPT
#include "ecmascript/ecmascript.h"
#endif
#ifdef CONFIG_ECMASCRIPT_SMJS
#include "ecmascript/spidermonkey/document.h"
#include "ecmascript/ecmascript-c.h"
#endif
#include "encoding/encoding.h"
#include "intl/charsets.h"
@ -52,169 +49,6 @@
#include "viewer/text/vs.h"
#if defined(CONFIG_ECMASCRIPT_SMJS) || defined(CONFIG_QUICKJS) || defined(CONFIG_MUJS)
/** @todo XXX: This function is de facto obsolete, since we do not need to copy
* snippets around anymore (we process them in one go after the document is
* loaded; gradual processing was practically impossible because the snippets
* could reorder randomly during the loading - consider i.e.
* @<body onLoad>@<script>@</body>: first just @<body> is loaded, but then the
* rest of the document is loaded and @<script> gets before @<body>; do not even
* imagine the trouble with rewritten (through scripting hooks) documents;
* besides, implementing document.write() will be much simpler).
* But I want to take no risk by reworking that now. --pasky */
static void
add_snippets(struct ecmascript_interpreter *interpreter,
LIST_OF(struct ecmascript_string_list_item) *doc_snippets,
LIST_OF(struct ecmascript_string_list_item) *queued_snippets)
{
struct ecmascript_string_list_item *doc_current = (struct ecmascript_string_list_item *)doc_snippets->next;
#ifdef CONFIG_LEDS
if (list_empty(*queued_snippets) && interpreter->vs->doc_view->session)
unset_led_value(interpreter->vs->doc_view->session->status.ecmascript_led);
#endif
if (list_empty(*doc_snippets)
|| !get_opt_bool("ecmascript.enable", NULL))
return;
/* We do this all only once per view_state now. */
if (!list_empty(*queued_snippets)) {
/* So if we already did it, we shouldn't need to do it again.
* This is the case of moving around in history - we have all
* what happenned recorded in the view_state and needn't bother
* again. */
#ifdef CONFIG_DEBUG
/* Hopefully. */
struct ecmascript_string_list_item *iterator = queued_snippets->next;
while (iterator != (struct ecmascript_string_list_item *) queued_snippets) {
if (doc_current == (struct ecmascript_string_list_item *) doc_snippets) {
INTERNAL("add_snippets(): doc_snippets shorter than queued_snippets!");
return;
}
#if 0
DBG("Comparing snippets\n%.*s\n###### vs #####\n%.*s\n #####",
iterator->string.length, iterator->string.source,
doc_current->string.length, doc_current->string.source);
#endif
assert(!strlcmp(iterator->string.source,
iterator->string.length,
doc_current->string.source,
doc_current->string.length));
doc_current = doc_current->next;
iterator = iterator->next;
}
#endif
return;
}
assert(doc_current);
for (; doc_current != (struct ecmascript_string_list_item *) doc_snippets;
doc_current = doc_current->next) {
add_to_ecmascript_string_list(queued_snippets, doc_current->string.source,
doc_current->string.length, doc_current->element_offset);
#if 0
DBG("Adding snippet\n%.*s\n #####",
doc_current->string.length,
doc_current->string.source);
#endif
}
}
static void
process_snippets(struct ecmascript_interpreter *interpreter,
LIST_OF(struct ecmascript_string_list_item) *snippets,
struct ecmascript_string_list_item **current)
{
if (!*current)
*current = (struct ecmascript_string_list_item *)snippets->next;
for (; *current != (struct ecmascript_string_list_item *) snippets;
(*current) = (*current)->next) {
struct string *string = &(*current)->string;
char *uristring;
struct uri *uri;
struct cache_entry *cached;
struct fragment *fragment;
if (string->length == 0)
continue;
if (*string->source != '^') {
/* Evaluate <script>code</script> snippet */
ecmascript_eval(interpreter, string, NULL, (*current)->element_offset);
continue;
}
/* Eval external <script src="reference"></script> snippet */
uristring = string->source + 1;
if (!*uristring) continue;
uri = get_uri(uristring, URI_BASE);
if (!uri) continue;
cached = get_redirected_cache_entry(uri);
done_uri(uri);
if (!cached) {
/* At this time (!gradual_rerendering), we should've
* already retrieved this though. So it must've been
* that it went away because unused and the cache was
* already too full. */
#if 0
/* Disabled because gradual rerendering can be triggered
* by numerous events other than a ecmascript reference
* completing like the original document and CSS. Problem
* is that we should never continue this loop but rather
* break out if that is the case. Somehow we need to
* be able to derive URI loading problems at this point
* or maybe remove reference snippets if they fail to load.
*
* This FIFO queue handling should be used for also CSS
* imports so it would be cool if it could be general
* enough for that. Using it for frames with the FIFOing
* disabled probably wouldn't hurt either.
*
* To top this thing off it would be nice if it also
* handled dependency tracking between references so that
* CSS documents will not disappear from the cache
* before all referencing HTML documents has been deleted
* from it.
*
* Reported as bug 533. */
/* Pasky's explanation: If we get the doc in a single
* shot, before calling draw_formatted() we didn't have
* anything additional queued for loading and the cache
* entry was already loaded, so we didn't get
* gradual_loading set. But then while parsing the
* document we got some external references and trying
* to process them right now. Boom.
*
* The obvious solution would be to always call
* draw_formatted() with gradual_loading in
* doc_loading_callback() and if we are sure the
* loading is really over, call it one more time
* without gradual_loading set. I'm not sure about
* the implications though so I won't do it before
* 0.10.0. --pasky */
ERROR("The script of %s was lost in too full a cache!",
uristring);
#endif
continue;
}
fragment = get_cache_fragment(cached);
if (fragment) {
struct string code = INIT_STRING(fragment->data, (int)fragment->length);
ecmascript_eval(interpreter, &code, NULL, (*current)->element_offset);
}
}
check_for_rerender(interpreter, "eval");
}
#endif
static void
render_encoded_document(struct cache_entry *cached, struct document *document)
{
@ -410,48 +244,7 @@ render_document(struct view_state *vs, struct document_view *doc_view,
#endif
}
#if defined(CONFIG_ECMASCRIPT_SMJS) || defined(CONFIG_QUICKJS) || defined(CONFIG_MUJS)
if (!vs->ecmascript_fragile)
assert(vs->ecmascript);
if (!options->dump && !options->gradual_rerendering) {
/* We also reset the state if the underlying document changed
* from the last time we did the snippets. This may be
* triggered i.e. when redrawing a document which has been
* reloaded in a different tab meanwhile (OTOH we don't want
* to reset the state if we are redrawing a document we have
* already drawn before).
*
* (vs->ecmascript->onload_snippets_owner) check may be
* superfluous since we should always have
* vs->ecmascript_fragile set in those cases; that's why we
* don't ever bother to re-zero it if we are suddenly doing
* gradual rendering again.
*
* XXX: What happens if a document is still loading in the
* other tab when we press ^L here? */
if (vs->ecmascript_fragile
|| (vs->ecmascript
&& vs->ecmascript->onload_snippets_cache_id
&& document->cache_id != vs->ecmascript->onload_snippets_cache_id))
ecmascript_reset_state(vs);
/* If ecmascript_reset_state cannot construct a new
* ECMAScript interpreter, it sets vs->ecmascript =
* NULL and vs->ecmascript_fragile = 1. */
if (vs->ecmascript) {
vs->ecmascript->onload_snippets_cache_id = document->cache_id;
/* Passing of the onload_snippets pointers
* gives *_snippets() some feeling of
* universality, shall we ever get any other
* snippets (?). */
add_snippets(vs->ecmascript,
&document->onload_snippets,
&vs->ecmascript->onload_snippets);
process_snippets(vs->ecmascript,
&vs->ecmascript->onload_snippets,
&vs->ecmascript->current_onload_snippet);
check_for_rerender(vs->ecmascript, "process_snippets");
}
}
check_for_snippets(vs, options, document);
#endif
/* If we do not care about the height and width of the document

199
src/ecmascript/ecmascript-c.cpp
View File

@ -79,3 +79,202 @@ ecmascript_protocol_handler(struct session *ses, struct uri *uri)
CACHE_MODE_NORMAL);
done_uri(redirect_uri);
}
static void
add_snippets(struct ecmascript_interpreter *interpreter,
LIST_OF(struct ecmascript_string_list_item) *doc_snippets,
LIST_OF(struct ecmascript_string_list_item) *queued_snippets)
{
struct ecmascript_string_list_item *doc_current = (struct ecmascript_string_list_item *)doc_snippets->next;
#ifdef CONFIG_LEDS
if (list_empty(*queued_snippets) && interpreter->vs->doc_view->session)
unset_led_value(interpreter->vs->doc_view->session->status.ecmascript_led);
#endif
if (list_empty(*doc_snippets)
|| !get_opt_bool("ecmascript.enable", NULL))
return;
/* We do this all only once per view_state now. */
if (!list_empty(*queued_snippets)) {
/* So if we already did it, we shouldn't need to do it again.
* This is the case of moving around in history - we have all
* what happenned recorded in the view_state and needn't bother
* again. */
#ifdef CONFIG_DEBUG
/* Hopefully. */
struct ecmascript_string_list_item *iterator = queued_snippets->next;
while (iterator != (struct ecmascript_string_list_item *) queued_snippets) {
if (doc_current == (struct ecmascript_string_list_item *) doc_snippets) {
INTERNAL("add_snippets(): doc_snippets shorter than queued_snippets!");
return;
}
#if 0
DBG("Comparing snippets\n%.*s\n###### vs #####\n%.*s\n #####",
iterator->string.length, iterator->string.source,
doc_current->string.length, doc_current->string.source);
#endif
assert(!strlcmp(iterator->string.source,
iterator->string.length,
doc_current->string.source,
doc_current->string.length));
doc_current = doc_current->next;
iterator = iterator->next;
}
#endif
return;
}
assert(doc_current);
for (; doc_current != (struct ecmascript_string_list_item *) doc_snippets;
doc_current = doc_current->next) {
add_to_ecmascript_string_list(queued_snippets, doc_current->string.source,
doc_current->string.length, doc_current->element_offset);
#if 0
DBG("Adding snippet\n%.*s\n #####",
doc_current->string.length,
doc_current->string.source);
#endif
}
}
static void
process_snippets(struct ecmascript_interpreter *interpreter,
LIST_OF(struct ecmascript_string_list_item) *snippets,
struct ecmascript_string_list_item **current)
{
if (!*current)
*current = (struct ecmascript_string_list_item *)snippets->next;
for (; *current != (struct ecmascript_string_list_item *) snippets;
(*current) = (*current)->next) {
struct string *string = &(*current)->string;
char *uristring;
struct uri *uri;
struct cache_entry *cached;
struct fragment *fragment;
if (string->length == 0)
continue;
if (*string->source != '^') {
/* Evaluate <script>code</script> snippet */
ecmascript_eval(interpreter, string, NULL, (*current)->element_offset);
continue;
}
/* Eval external <script src="reference"></script> snippet */
uristring = string->source + 1;
if (!*uristring) continue;
uri = get_uri(uristring, URI_BASE);
if (!uri) continue;
cached = get_redirected_cache_entry(uri);
done_uri(uri);
if (!cached) {
/* At this time (!gradual_rerendering), we should've
* already retrieved this though. So it must've been
* that it went away because unused and the cache was
* already too full. */
#if 0
/* Disabled because gradual rerendering can be triggered
* by numerous events other than a ecmascript reference
* completing like the original document and CSS. Problem
* is that we should never continue this loop but rather
* break out if that is the case. Somehow we need to
* be able to derive URI loading problems at this point
* or maybe remove reference snippets if they fail to load.
*
* This FIFO queue handling should be used for also CSS
* imports so it would be cool if it could be general
* enough for that. Using it for frames with the FIFOing
* disabled probably wouldn't hurt either.
*
* To top this thing off it would be nice if it also
* handled dependency tracking between references so that
* CSS documents will not disappear from the cache
* before all referencing HTML documents has been deleted
* from it.
*
* Reported as bug 533. */
/* Pasky's explanation: If we get the doc in a single
* shot, before calling draw_formatted() we didn't have
* anything additional queued for loading and the cache
* entry was already loaded, so we didn't get
* gradual_loading set. But then while parsing the
* document we got some external references and trying
* to process them right now. Boom.
*
* The obvious solution would be to always call
* draw_formatted() with gradual_loading in
* doc_loading_callback() and if we are sure the
* loading is really over, call it one more time
* without gradual_loading set. I'm not sure about
* the implications though so I won't do it before
* 0.10.0. --pasky */
ERROR("The script of %s was lost in too full a cache!",
uristring);
#endif
continue;
}
fragment = get_cache_fragment(cached);
if (fragment) {
struct string code = INIT_STRING(fragment->data, (int)fragment->length);
ecmascript_eval(interpreter, &code, NULL, (*current)->element_offset);
}
}
check_for_rerender(interpreter, "eval");
}
void
check_for_snippets(struct view_state *vs, struct document_options *options, struct document *document)
{
if (!vs->ecmascript_fragile)
assert(vs->ecmascript);
if (!options->dump && !options->gradual_rerendering) {
/* We also reset the state if the underlying document changed
* from the last time we did the snippets. This may be
* triggered i.e. when redrawing a document which has been
* reloaded in a different tab meanwhile (OTOH we don't want
* to reset the state if we are redrawing a document we have
* already drawn before).
*
* (vs->ecmascript->onload_snippets_owner) check may be
* superfluous since we should always have
* vs->ecmascript_fragile set in those cases; that's why we
* don't ever bother to re-zero it if we are suddenly doing
* gradual rendering again.
*
* XXX: What happens if a document is still loading in the
* other tab when we press ^L here? */
if (vs->ecmascript_fragile
|| (vs->ecmascript
&& vs->ecmascript->onload_snippets_cache_id
&& document->cache_id != vs->ecmascript->onload_snippets_cache_id))
ecmascript_reset_state(vs);
/* If ecmascript_reset_state cannot construct a new
* ECMAScript interpreter, it sets vs->ecmascript =
* NULL and vs->ecmascript_fragile = 1. */
if (vs->ecmascript) {
vs->ecmascript->onload_snippets_cache_id = document->cache_id;
/* Passing of the onload_snippets pointers
* gives *_snippets() some feeling of
* universality, shall we ever get any other
* snippets (?). */
add_snippets(vs->ecmascript,
&document->onload_snippets,
&vs->ecmascript->onload_snippets);
process_snippets(vs->ecmascript,
&vs->ecmascript->onload_snippets,
&vs->ecmascript->current_onload_snippet);
check_for_rerender(vs->ecmascript, "process_snippets");
}
}
}

4
src/ecmascript/ecmascript-c.h
View File

@ -7,8 +7,11 @@
extern "C" {
#endif
struct document_options;
struct docuemnt;
struct session;
struct uri;
struct view_state;
int ecmascript_get_interpreter_count(void);
void toggle_ecmascript(struct session *ses);
@ -16,6 +19,7 @@ void toggle_ecmascript(struct session *ses);
/* Takes line with the syntax javascript:<ecmascript code>. Activated when user
* follows a link with this synstax. */
void ecmascript_protocol_handler(struct session *ses, struct uri *uri);
void check_for_snippets(struct view_state *vs, struct document_options *options, struct document *document);
extern struct module ecmascript_module;