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146 commits

Author SHA1 Message Date
Andreas Kling
03da686aa2 LibWeb: Ignore backslashes (\) in attribute selectors 
This makes us at least parse selectors like [foo=bar\ baz] correctly.
The current solution here is quite hackish but the real fix will come
when we implement a spec-compliant CSS parser.
 2020-06-10 15:50:07 +02:00
Andreas Kling
65c4e5cacf LibWeb: Parse and match basic "contains" attribute selectors (~=) 2020-06-10 15:43:41 +02:00
Andreas Kling
e836f09094 LibWeb: Fix parser interpreting """ as "&quot" 
There was a logic mistake in the entity parser that chose the shorter
matching entity instead of the longer. Fix this and make the entity
lists constexpr while we're here.
 2020-06-10 10:34:28 +02:00
Andreas Kling
9b17bf3dcd LibWeb: Use HTML::TagNames globals in the new HTML parser 2020-06-07 23:53:16 +02:00
Andreas Kling
1d94ca7cfc LibWeb: Fix codepoint_from_entity() never returning an error 
If we don't find a matching entity, return an empty Optional.
 2020-06-07 19:13:56 +02:00
Andreas Kling
ab4c03ce2d LibWeb: Fix tokenizer swallowing an extra token after a named entity 2020-06-07 19:09:03 +02:00
Andreas Kling
731685468a LibWeb: Start fleshing out support for relative CSS units 
This patch introduces support for more than just "absolute px" units in
our Length class. It now also supports "em" and "rem", which are units
relative to the font-size of the current layout node and the <html>
element's layout node respectively.
 2020-06-07 17:55:46 +02:00
Andreas Kling
be6abce44f LibWeb: Handle EOF tokens during "text" insertion 2020-06-06 16:36:18 +02:00
Luke
61d5bec739 LibWeb: Fully implement all script tokenizer states 
Also fixes RAWTEXTLessThanSign having a separate emit and reconsume.
 2020-06-06 09:55:15 +02:00
Andreas Kling
3337365000 LibWeb: Parse param/source/track start tags during "in body" insertion 2020-06-05 21:59:46 +02:00
Andreas Kling
b4591f0037 LibWeb: Fix parsing of "<textarea></textarea>" 
When handling a "textarea" start tag, we have to ignore the next token
if it's an LF ('\n'). However, we were not switching the tokenizer
state before fetching the lookahead token, and this caused us to force
the tokenizer into the RCDATA state too late, effectively getting it
stuck in that state for way longer than it should be.

Fixes #2508.
 2020-06-05 12:05:42 +02:00
Andreas Kling
4e71684a3a LibWeb: Fix missing tokenizer state change in RCDATALessThanSign 
We can't RECONSUME_IN after we've used EMIT_CHARACTER since we'll have
returned from the function.
 2020-06-05 12:02:30 +02:00
Andreas Kling
b59f4632d5 LibWeb: Unbreak character reference and DOCTYPE parsing post-UTF-8 
Oops, these were still using the byte-offset cursor. My goodness is it
unergonomic to index into UTF-8 strings, but Dr. Bugaev says it's good.

There is lots of room for improvement here. Just like the rest of the
tokenizer and parser. We'll have to do a few optimization passes over
them once they mature.
 2020-06-04 22:09:36 +02:00
Andreas Kling
b6288163f1 LibWeb: Make the new HTML parser parse input as UTF-8 
We already convert the input to UTF-8 before starting the tokenizer,
so all this patch had to do was switch the tokenizer to use an Utf8View
for its input (and to emit 32-bit codepoints.)
 2020-06-04 21:12:17 +02:00
Andreas Kling
19190267a6 LibWeb: Fix incorrectly consumed characters after reference tokens 
The NumericCharacterReferenceEnd tokenizer state should not advance
the input stream.
 2020-06-04 16:49:21 +02:00
Andreas Kling
ca33bc7895 LibWeb: Fix tokenization of attributes with empty attributes 
We were neglecting to emit start tags for tags where the last attribute
had no value.

Also fix a parse error TODO that I hit while looking at this.
 2020-06-04 12:00:09 +02:00
Kyle McLean
b9549078cc LibWeb: Handle "html" end tag during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
a3bf3a5d68 LibWeb: Handle "xmp" start tag during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
c70bd0ba58 LibWeb: Handle "nobr" start tag during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
22521e57fd LibWeb: Handle "form" end tag during "in body" if stack of open elements does not contain "template" 2020-06-04 09:09:33 +02:00
Kyle McLean
4edd0643a6 LibWeb: Handle NULL character during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
5e3972a946 LibWeb: Parse "body" end tags during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
1ad81e4833 LibWeb: Parse "br" end tags during "in body" 2020-06-04 09:09:33 +02:00
Kyle McLean
9fca4b56d3 LibWeb: Parse end tags for "applet", "marquee", and "object" during "in body" 2020-06-04 09:09:33 +02:00
Andreas Kling
3c2fbc825c LibWeb: Call children_changed() on text nodes when flushing characters 
Now that we flush characters in a single place, we can call the Text's
children_changed() from there instead of having a goofy targeted hack
for <style> elements. :^)
 2020-06-03 22:13:29 +02:00
Andreas Kling
c40de9275a LibWeb: Buffer text node character insertions in the new parser 
Instead of appending character-at-a-time, we now buffer character
insertions in a StringBuilder, and flush them to the relevant node
whenever we start inserting into a new node (and when parsing ends.)
 2020-06-03 21:53:08 +02:00
Andreas Kling
a3936f10eb LibWeb: Fix tokenizing scripts with '<' in them 
The EMIT_CHARACTER_AND_RECONSUME_IN was emitting the current token
instead of the specified codepoint.
 2020-06-02 14:27:53 +02:00
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