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119 commits

Author SHA1 Message Date
Andreas Kling
410fa5abe0 LibWeb: Parse barebones document without doctype, <html>, etc. 
Last night I tried making a little test page that had a bunch of <img>
elements and nothing else. It didn't work.

Fix this by correctly adding a synthesized <html> element to the
document if we get something else in the "before html insertion mode.
 2020-06-02 08:50:33 +02:00
Andreas Kling
e5ddb76a67 LibWeb: Support "td" and "th" start tags during "in table body" 
This makes it possible to load Google Image Search results. You can't
see the images yet, but it's still something. :^)
 2020-06-01 22:09:09 +02:00
Andreas Kling
77a3710e9d LibWeb: Tokenize "anything else" in CommentLessThanSignBangDashDash 2020-06-01 20:14:23 +02:00
Andreas Kling
8766e49a7c LibWeb+Browser: Use the new HTML parser by default 
You can still run the old parser with "br -O", but the new one is good
enough to be the default parser now. We'll fix issues as we go and
eventually remove the old one completely. :^)
 2020-06-01 19:08:31 +02:00
Andreas Kling
db93db8100 LibWeb: Put whining about tokenizer errors behind an #ifdef 
Real web content has *tons* of tokenizer errors and we don't need to
complain every time as that makes the debug log unbearable.
 2020-06-01 18:46:11 +02:00
Andreas Kling
5944abf31c LibWeb: More parser cases in the "in body" and "after after body" modes 2020-06-01 18:46:11 +02:00
Andreas Kling
a775c2c717 LibWeb: Handle more cases in the SelfClosingStartTag tokenizer state 2020-06-01 18:46:11 +02:00
Andreas Kling
8429551368 LibWeb: Implement more of the "after head" insertion mode 2020-06-01 18:46:11 +02:00
Andreas Kling
f3b09ddd8e LibWeb: Implement more of the ScriptDataEndTagName tokenizer state 
Some of this is extremely repetitive. We'll need to rethink how we
do queue/emit to improve this.
 2020-05-30 23:00:35 +02:00
Andreas Kling
d058addd74 LibWeb: Handle "dd" and "dt" end tags during "in body" 2020-05-30 23:00:35 +02:00
Andreas Kling
ca6fbefbc9 LibWeb: Support parsing "select" elements (outside of tables) 2020-05-30 19:58:52 +02:00
Andreas Kling
60352c7b9b LibWeb: Hack the parser to dodge <template> elements in <head> for now 2020-05-30 19:23:04 +02:00
Andreas Kling
1212485348 LibWeb: Fix typo in StackOfOpenElements::topmost_special_node_below() 
Backwards iteration works better if we actually go backwards! :^)
 2020-05-30 18:49:48 +02:00
Andreas Kling
ca23db10ef LibWeb: Don't crash when encountering <svg> or <math> elements 
Just treat them like unknown elements for now. :^)
 2020-05-30 18:46:39 +02:00
Andreas Kling
756829555a LibWeb: Parse "textarea" tags during the "in body" insertion mode 
Had to handle some more cases in the tokenizer to support this.
 2020-05-30 18:40:23 +02:00
Andreas Kling
f4778d1ba0 LibWeb: Add missing special tag case in the "in body" insertion mode 2020-05-30 18:26:44 +02:00
Andreas Kling
5818ef2c80 LibWeb: Implement more table-related insertion modes 2020-05-30 18:26:44 +02:00
Andreas Kling
8c96b8174b LibWeb: Handle AAA situation where there's no formatting element found 
In this case, we're supposed to return from the AAA and then jump to a
different behavior in the "in body" insertion mode. So now we do that.
 2020-05-30 17:47:50 +02:00
Andreas Kling
c9dd459822 LibWeb: Implement some more RAWTEXT stuff in the tokenizer 2020-05-30 17:47:50 +02:00
TheDumpap
d92c9d3772 LibWeb: Implement more of the tokenizer states 
Slowly adding more unimplemented options for tokenizer states.
 2020-05-30 17:47:50 +02:00
Andreas Kling
f662b1ea37 LibWeb: Implement enough parsing to parse the HTML spec front page :^) 
We can now actually open http://html.spec.whatwg.org/ in Browser.
 2020-05-30 13:07:47 +02:00
Andreas Kling
770372ad02 LibWeb: Handle end-of-file token during "in body" insertion mode 2020-05-30 12:40:12 +02:00
Andreas Kling
368044eabd LibWeb: Flesh out the "in head" insertion mode and add missing cases 2020-05-30 12:28:12 +02:00
Andreas Kling
e82226f3fb LibWeb: Handle two kinds of deferred script executions 
This patch adds two script lists to Document:

- Scripts to execute when parsing has finished
- Scripts to execute as soon as possible

Since we don't actually load scripts asynchronously yet (we just do a
synchronous load when parsing the <script> element for simplicity),
these are already loaded by the time we get to "The end" of parsing.
 2020-05-30 12:26:15 +02:00
Andreas Kling
62885b5646 LibWeb: Fix accidental swallow of self-closing tag tokens 
Instead of dropping self-closing tags on the floor, we now emit them
into the token stream. :^)
 2020-05-30 11:31:49 +02:00
Andreas Kling
fbd52047bb LibWeb: Parse "form" tags during the "in body" insertion mode 2020-05-30 11:31:49 +02:00
Andreas Kling
851a0f983a LibWeb: Tokenizing a semicolon-less HTML entity is (just a) parse error 
No need to blow chunks over this.
 2020-05-30 11:31:49 +02:00
Andreas Kling
b9d5d45eff LibWeb: Handle an error condition for "a" start tag during "in body" 
If we have an <a> element on the list of active formatting elements
when hitting another "a" start tag, that's a parse error. Recover by
using the AAA.
 2020-05-30 11:31:49 +02:00
Andreas Kling
c8e0426ab9 LibWeb: Parser should prefer the longest matchable HTML entity 
If we can match both "&copy" and "&copy;" we should prefer the latter.

Also remove invalid FIXME's about case insensitive entities.
 2020-05-30 11:31:49 +02:00
Andreas Kling
1ef5d609d9 AK+LibC: Add TODO() as an alternative to ASSERT_NOT_REACHED() 
I've been using this in the new HTML parser and it makes it much easier
to understand the state of unfinished code branches.

TODO() is for places where it's okay to end up but we need to implement
something there.

ASSERT_NOT_REACHED() is for places where it's not okay to end up, and
something has gone wrong.
 2020-05-30 11:31:49 +02:00
Andreas Kling
cfbd95f42a LibWeb: Turn a bunch of ASSERT_NOT_REACHED() in the parser into TODO() 2020-05-30 11:31:49 +02:00
Andreas Kling
6854f726ce LibWeb: Improve support for "a" and "li" during "in body" insertion 
We can now parse welcome.html once again, without resorting to hacks
or fallbacks during "in body" :^)
 2020-05-30 11:31:49 +02:00
Andreas Kling
30d64fccde LibWeb: Parse "li" start tags in the "in body" insertion mode 2020-05-30 11:31:49 +02:00
Andreas Kling
2b1517f215 LibWeb: Add all branches from the parsing spec to "in body" 
This makes us crash in TODO() more often, but it's better that we know
what's missing instead of incorrectly ending up on the fallback path.
 2020-05-30 11:31:49 +02:00
Andreas Kling
68b1bdc234 LibWeb: Add a way to stop the new HTML parser 
Some things are specced to "stop parsing", which basically just means
to stop fetching tokens and jump to "The end"
 2020-05-28 18:55:18 +02:00
Andreas Kling
00b44ab148 LibWeb: Implement more of the "after body" insertion mode 2020-05-28 18:52:32 +02:00
Andreas Kling
cba5d59adc LibWeb: Parse comments in the "in body" insertion mode 2020-05-28 18:46:39 +02:00
Andreas Kling
bb2f22577b LibWeb: Implement a bunch more script-related tokenization states 2020-05-28 18:44:17 +02:00
Andreas Kling
4788bcd6f8 LibWeb: Add HTMLToken::make_character() 
It's tedious to make character tokens manually all the time.
 2020-05-28 18:43:52 +02:00
Andreas Kling
5f8cbe6a1b LibWeb: Fix HTMLDocumentParser build 2020-05-28 18:20:55 +02:00
Andreas Kling
308cb69329 LibWeb: Remove a misplaced call to close_a_p_element() in "in body" 
This should only be done for the corresponding start tags.
 2020-05-28 18:18:20 +02:00
Andreas Kling
c84212aaba LibWeb: Add a StackOfOpenElements helper for "popping until a tag name" 2020-05-28 18:18:20 +02:00
Andreas Kling
5e53c45113 LibWeb: Plumb content encoding into the new HTML parser 
We still don't handle non-ASCII input correctly, but at least now we'll
convert e.g ISO-8859-1 to UTF-8 before starting to tokenize.
This patch also makes "view source" work with the new parser. :^)
 2020-05-28 12:35:19 +02:00
Andreas Kling
772b51038e LibWeb: Parse "input" tags during the "in body" insertion mode 2020-05-28 12:19:18 +02:00
Andreas Kling
7aa7a2078f LibWeb: Parse "td" start tags during "in cell" insertion mode 2020-05-28 11:46:08 +02:00
Andreas Kling
5c35f3c9ba LibWeb: Support named character references (e.g "&amp;") 2020-05-28 11:44:19 +02:00
Andreas Kling
ebb1649a52 LibWeb: Implement more table support in the new HTML parser 
This is enough to parse the Google front page! (Note: I did have to
hack the tokenizer while parsing Google, in order to avoid named
character references screwing everything up. We'll fix that too soon
enough!)
 2020-05-28 00:27:46 +02:00
Andreas Kling
7f18c51f4c LibWeb: Flesh out "reset the insertion mode appropriately" algorithm 2020-05-28 00:27:00 +02:00
Andreas Kling
2a97127faa LibWeb: Handle various self-closing tags during "in body" insertion 
We can now parse self-closing "<img>" tags correctly! :^)
 2020-05-28 00:25:56 +02:00
Andreas Kling
f69001339f LibWeb: Handle inline stylesheets a bit better in the new parser 
While we're still supporting both the old and the new parser, we have
to deal with the way they load inline stylesheet (and scripts) a bit
differently.

The old parser loads all the text content up front, and then notifies
the containing element. The new parser creates the containing element
up front and appends text inside it afterwards.

For now, we simply do an empty "children_changed" notification when
first inserting a text node inside an element. This at least prevents
the CSS parser from choking on a single-character stylesheet.
 2020-05-28 00:23:34 +02:00