Adds support for the following HTML elements to the HTML Processor:
- PARAM, SOURCE, TRACK
Previously these elements were not supported and the HTML Processor would bail when encountering them. Now, with this patch applied, it will proceed to parse an HTML document when encountering those tags.
Props jonsurrell, dmsnell
Fixes#60283
Built from https://develop.svn.wordpress.org/trunk@57326
git-svn-id: http://core.svn.wordpress.org/trunk@56832 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This patch adds newly supported elements to tests that should have been updated
in recent PRs, but which were merged without that. Those PRs removed failing
tests showing that the elements were unsupported, but did not add the elements
to the list of supported ones.
It also removes some elements from the special-exclusion list of unsupported IN
BODY elements. These did not present in failing tests because earlier
conditions in the switch structure caught the tags before hitting the default
block.
Finally it adds some missing elements to the list of void elements. These
elements are not listed as void in the HTML specification because they are
deprecated. However, they are treated as void for the sake of HTML
serialization and the parsing rules indicate that they behave as void elements,
so it's safe to list them within the HTML API as void.
Developed in WordPress/wordpress-develop#5913
Fixes#60307
Built from https://develop.svn.wordpress.org/trunk@57319
git-svn-id: http://core.svn.wordpress.org/trunk@56825 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adds support for the following HTML elements to the HTML Processor:
- PRE, LISTING
Previously, these elements were not supported and the HTML Processor would bail when encountering them. Now, with this patch applied, it will proceed to parse an HTML document when encountering those tags.
Developed in WordPress/wordpress-develop#5903
Props jonsurrell, dmsnell
Fixes#60283
Built from https://develop.svn.wordpress.org/trunk@57317
git-svn-id: http://core.svn.wordpress.org/trunk@56823 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adds support for the following HTML elements to the HTML Processor:
- AREA, BR, EMBED, KEYGEN, WBR
- Only the opening BR tag is supported, as the invalid closer `</br>`
involves more complicated rules, to be implemented later.
Previously, these elements were not supported and the HTML Processor
would bail when encountering them. With this patch it will proceed to
parse an HTML document when encountering those tags as long as other
normal conditions don't cause it to bail (such as complicated format
reconstruction rules).
Props jonsurrell, dmsnell
Fixes#60283
Built from https://develop.svn.wordpress.org/trunk@57316
git-svn-id: http://core.svn.wordpress.org/trunk@56822 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adds support for the following HTML elements to the HTML Processor:
- HR
Previously, this element was not supported and the HTML Processor would bail when encountering
it. Now, with this patch, it will proceed to parse an HTML document when encountering one.
Developed in WordPress/wordpress-develop#5897
Props jonsurrell, dmsnell
Fixes#60283
Built from https://develop.svn.wordpress.org/trunk@57314
git-svn-id: http://core.svn.wordpress.org/trunk@56820 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adds support for the following HTML elements to the HTML Processor:
- LI, OL, UL.
- DD, DL, DT.
Previously, these elements were not supported and the HTML Processor would bail when encountering them.
With this patch it will proceed to parse an HTML document when encountering those tags as long as other normal conditions don't cause it to bail (such as complicated format reconstruction).
Props audrasjb, jonsurrell, bernhard-reiter.
Fixes#60215.
Built from https://develop.svn.wordpress.org/trunk@57264
git-svn-id: http://core.svn.wordpress.org/trunk@56770 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The HTML API HTML processor does not yet support all tags. Many tags (e.g. list elements) have some complicated rules in the [https://html.spec.whatwg.org/#parsing-main-inbody "in body" insertion mode].
Implementing these special rules is blocking the implementation for a catch-all rule for "any other tag" because we need to prevent special rules from being handled by the catch-all.
Any other start tag
Reconstruct the active formatting elements, if any.
Insert an HTML element for the token.
…
This change ensures the HTML Processor fails when handling special tags. This is the same as existing behavior, but will allow us to implement the catch-all "any other tag" handling without unintentionally handling special elements.
Additionally, we add tests that assert the special elements are unhandled. As these tags are implemented, this should help to ensure they're removed from the unsupported tag list.
Props jonsurrell, dmsnell.
Fixes#60092.
Built from https://develop.svn.wordpress.org/trunk@57248
git-svn-id: http://core.svn.wordpress.org/trunk@56754 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Previously these have been unsupported, but in this patch, support is added for the tags so that the HTML Processor can process documents containing them.
There was a design discussion about introducing a constant to communicate "any of the H1 - H6 elements" but this posed a number of challenges that don't need to be answered in this patch. For the time being, because the HTML specification treats H1 - H6 specially as a single kind of element, the HTML Processor uses an internal hard-coded string to indicate this. By using a hard-coded string it's possible to avoid introducing a class constant which cannot be made private due to PHP's class design. In the future, this will probably appear as a special constant in a new constant-containing class.
Props dmsnell, jonsurrell.
Fixes#60060.
Built from https://develop.svn.wordpress.org/trunk@57186
git-svn-id: http://core.svn.wordpress.org/trunk@56697 1a063a9b-81f0-0310-95a4-ce76da25c4cd
There are a handful of elements which behave similarly and are generically container elements. These are the following elements:
ADDRESS, ARTICLE, ASIDE, BLOCKQUOTE, CENTER, DETAILS, DIALOG, DIR,
DL, DIV, FIELDSET, FIGCAPTION, FIGURE, FOOTER, HEADER, HGROUP, MAIN,
MENU, NAV, SEARCH, SECTION, SUMMARY
This patch adds support to the HTML Processor for handling these elements. They do not require any additional logic in the rest of the class, and carry no specific semantic rules for parsing beyond what is listed in their group in the IN BODY section of the HTML5 specification.
Props dmsnell.
Fixes#59914.
Built from https://develop.svn.wordpress.org/trunk@57115
git-svn-id: http://core.svn.wordpress.org/trunk@56626 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inside a `next_tag()` loop it can be challenging to use breadcrumbs because they are only exposed inside the call to `next_tag()` via the `$query` arg.
In this patch a new method, `matches_breadcrumbs()`, is exposed which allows for querying within the `next_tag()` loop for more complicated queries.
This method exposes a wildcard `*` operator to allow matching ''any HTML tag'' that the currently-matched tag is a child or descendant of.
Props dmsnell, westonruter, mukesh27.
Fixes#59400.
Built from https://develop.svn.wordpress.org/trunk@56702
git-svn-id: http://core.svn.wordpress.org/trunk@56214 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This patch updates documentation and an internal variable name within the
HTML Processor class so that they are more helpful and complete to a reader.
There should be no functional or visual changes in this patch.
Props dmsnell, mukesh27.
Fixes#59267.
Built from https://develop.svn.wordpress.org/trunk@56565
git-svn-id: http://core.svn.wordpress.org/trunk@56077 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The `$current_token` reference has been stored in the HTML Processor itself, but I suggested to move it into the externalized state so that it can be stored and replaced.
In this patch the reference is moved to that state variable and it should become more possible to save and load state, to resume execution after pausing.
Props dmsnell.
Fixes#59268.
Built from https://develop.svn.wordpress.org/trunk@56558
git-svn-id: http://core.svn.wordpress.org/trunk@56070 1a063a9b-81f0-0310-95a4-ce76da25c4cd
It was a design goal of the HTML Processor to abort processing its input document when encountering unsupported markup. Unfortunately there was no test for this and so-far, the HTML Processor has paused, but continued processing in these situations.
In this patch a new test ensures that the HTML Processor stops and refuses to move forward after encountering any unsupported markup. It also ensures that it doesn't report any current tag names since unsupported markup could imply that the read tag name is different than the parsed tag name.
Props dmsnell.
Fixes#59167.
Built from https://develop.svn.wordpress.org/trunk@56493
git-svn-id: http://core.svn.wordpress.org/trunk@56005 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This patch adds support to process the BUTTON element. This requires adding some additional semantic rules to handle situations where a BUTTON element is already in scope.
Also included is a fixup to enforce that `WP_HTML_Processor::next_tag()` never returns for a tag closer. This is useful with the Tag Processor, but not for the HTML Processor. There were tests relying on this behavior to assert that internal processes were working as they should, but those tests have been updated to use the semi-private `step()` function, which does stop on tag closers.
This patch is one in a series of changes to expand support within the HTML API, moving gradually to allow for more focused changes that are easier to review and test. The HTML Processor is a work in progress with a certain set of features slated to be ready and tested by 6.4.0, but it will only contain partial support of the HTML5 specification even after that. Whenever it cannot positively recognize and process its input it bails, and certain function stubs and logical stubs exist to structure future expansions of support.
Props dmsnell.
Fixes#58961.
Built from https://develop.svn.wordpress.org/trunk@56380
git-svn-id: http://core.svn.wordpress.org/trunk@55892 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Adjust the code style according to the rules that the linting process in Gutenberg requires.
There are only a couple code changes that should have no effect on the runtime:
- A missing check to verify that only `UTF-8` is supported has been added (brought up because it was identified as an undefined variable).
- A few `return false;` statements have been added to avoid having the linter complain that functions don't return a value despite indicating they return `bool`. The functions are stubs for coming support and currently `throw`, so the `return` statements are unreachable.
Props dmsnell, costdev, davidbaumwald, peterwilsoncc, SergeyBiryukov.
Fixes#58918.
Built from https://develop.svn.wordpress.org/trunk@56363
git-svn-id: http://core.svn.wordpress.org/trunk@55875 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In this patch we're introducing support for the SPAN element, which is the first
in the class of "any other tag" in the "in body" insertion mode.
This patch introduces the mechanisms required to handle that class of tags but
only introduces SPAN to keep the change focused. With the tests and mechanisms
in place it will be possible to follow-up and add another limited set of tags.
It's important that this not use the default catch-all in the switch handling
`step_in_body` because that would catch tags that have specific rules in previous
case statements that aren't yet added. For example, we don't want to treat the
`TABLE` element as "any other tag".
Props dmsnell.
Fixes#58907.
Built from https://develop.svn.wordpress.org/trunk@56331
git-svn-id: http://core.svn.wordpress.org/trunk@55843 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This patch introduces the //first// of //many// iterations on the evolution of the HTML API, the HTML Processor, which is built in order to understand HTML structure including nesting, misnesting, and complicated semantic rules.
In the first iteration, the HTML Processor is arbitrarily limited to a minimal subset of functionality so that we can review it, ship it, test it, and collect feedback before moving forward. This means that this patch is more or less an extension to the Tag Processor query language, providing the ability not only to scan for a tag of a given name, but also to find an HTML element in a specific nesting path.
The HTML Processor also aborts any time it encounters:
- a tag that isn't a `P`, `DIV`, `FIGURE`, `FIGCAPTION`, `IMG`, `STRONG`, `B`, `EM`, `I`, `A`, `BIG`, `CODE`, `FONT`, `SMALL`, `STRIKE`, `TT`, or `U` tag. this limit exists because many HTML elements require specific rules and we are trying to limit the number of rules introduced at once. this work is targeted at existing work in places like the image block.
- certain misnesting constructs that evoke complicated resolution inside the HTML spec. where possible and where simple to do reliably, certain parse errors are handled. in most cases the HTML Processor aborts.
The structure of the HTML Processor is established in this patch. Further spec-compliance comes through filling out //more of the same// kind and nature of code as is found in this patch. Certain critical HTML algorithms are partially supported, and where support requires more than is present, the HTML Processor acknowledges this and refuses to operate.
In this patch are explorations for how to verify that new HTML support is fully added (instead of allowing for partial updates that leave some code paths non-compliant). Performance is hard to measure since support is so limited at the current time, but it should generally follow the performance of the Tag Processor somewhat close as the overhead is minimized as much as practical.
Props dmsnell, zieladam, costdev.
Fixes#58517.
Built from https://develop.svn.wordpress.org/trunk@56274
git-svn-id: http://core.svn.wordpress.org/trunk@55786 1a063a9b-81f0-0310-95a4-ce76da25c4cd
dmsnell
Bernhard Reiter
Sergey Biryukov
Aaron Jorbin