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* select: Split out bytecode to unit conversion helper.Michael Drake2020-12-044-43/+54
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* select: mq: Fix to convert parse unit types to public unit types.Michael Drake2020-12-011-4/+9
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* parse: properties: Add property-specific unit class masks.Michael Drake2020-11-154-22/+270
| | | | | | | | | There's a table we can index into for calc(): const uint32_t property_unit_mask[CSS_N_PROPERTIES] And there are #defines for where the code is already property-specific, avoiding the lookup.
* parse: properties.gen: Convert to using unit allow masks.Michael Drake2020-11-151-21/+21
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* bytecode: Change unit representation, so that length has a bit set.Michael Drake2020-11-151-42/+44
| | | | This means that we can use a mask to check the unit class.
* select: computed: Squash use of uninitialised variable warning.Michael Drake2020-11-131-1/+1
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* Computed styles: Check length pair getter type before using result.Michael Drake2020-02-241-0/+4
| | | | Fixes use of garbage value scan-build issue.
* Computed styles: Handle invalid width types.Michael Drake2020-02-241-0/+2
| | | | Fixes scan-build use of garbage value.
* Parse: Add missing error checks for outline shorthand.Michael Drake2020-02-241-3/+12
| | | | | | Fixes scan-build: Value stored to 'error' is never read. Signed-off-by: Michael Drake <Michael Drake tlsa@netsurf-browser.org>
* Parse: Add missing error checks for list-style shorthand.Michael Drake2020-02-241-3/+12
| | | | | | Fixes scan-build: Value stored to 'error' is never read. Signed-off-by: Michael Drake <Michael Drake tlsa@netsurf-browser.org>
* Parse: Add missing error checks for flex-flow shorthand.Michael Drake2020-02-241-2/+8
| | | | | | Fixes scan-build: Value stored to 'error' is never read. Signed-off-by: Michael Drake <Michael Drake tlsa@netsurf-browser.org>
* Media queries: Don't set parts before allocation has failed.Michael Drake2020-02-241-1/+1
| | | | | | | Squashes scan-build error about dereference of parts if the allocation fails. Signed-off-by: Michael Drake <Michael Drake tlsa@netsurf-browser.org>
* Add end-block-content parse eventDaniel Silverstone2019-12-013-1/+40
| | | | | | | | | | | | | | | In order to cope with a situation where a block ends with a selector which has no ruleset, add an end-block-content event and in handling it, pop any intermediate states off the language stack so that we're in block mode by the time the event is completed. This fixes an assert situation caused by a ruleset such as: @media screen { dodgy } .outer { top: 10px; } Which has been encountered in the wild (likely a typo). Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>
* Select hash: Simplify insertion at start of non-empty list.Michael Drake2019-08-011-11/+10
| | | | This might help Coverity understand what's going on.
* Media queries: Tweak mq_parse_media_in_parens return style.Michael Drake2019-06-121-3/+4
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* resolve use of uninitialised pointer in media query initialisationVincent Sanders2019-06-121-0/+3
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* Media queries: Simplify parsed mq data structure slightly.Michael Drake2019-06-113-40/+20
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* Stylesheet: Increase size of storage for selector count for rules.Michael Drake2019-06-091-4/+4
| | | | | | We've found instances of well over 256 selectors for a rule in the wild. `for N in $(seq 0 254); do echo ".selector-$N,"; done; echo ".selector-255 {}"`
* Media queries: Squash an invalid warning from certain compilers.Michael Drake2019-06-091-1/+1
| | | | src/parse/mq.c:1125:15: error: 'query' may be used uninitialized in this function [-Werror=uninitialized]
* Media queries: Handle errors in a media query list correctly.Michael Drake2019-06-091-8/+39
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* Media queries: Squash error-path leaks of feature names.Michael Drake2019-06-051-3/+3
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* Media queries: <ratio> isn't allowed to have 0 numerator or denominator.Michael Drake2019-06-051-0/+4
| | | | | | | | | | The <ratio> value type is a positive (not zero or negative) <integer> followed by optional whitespace, followed by a solidus ('/'), followed by optional whitespace, followed by a positive <integer>. <ratio>s can be ordered or compared by transforming them into the number obtained by dividing their first <integer> by their second <integer>. -- https://www.w3.org/TR/mediaqueries-4/#aspect-ratio
* Computed styles: Remove last traces of extension blocks.Michael Drake2019-05-128-722/+548
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* Computed styles: Drop uncommon extension blocks.Michael Drake2019-05-1224-2732/+2059
| | | | | | | | | | | | | | They were a space saving feature, but they became largely redundant with computed style sharing. They also made the code complex and buggy in many places. E.g. the cascade, inheritance / composition, and intial values all needed to behave corretly when they, or their parent, had or didn't have an uncommon block. Also, only the uncommon block was really used. Fixes: https://bugs.netsurf-browser.org/mantis/view.php?id=2641
* Media queries: Feature matching: Compare lengths in pixels.Michael Drake2019-05-071-39/+141
| | | | | | | | Clients now provide viewport dimensions in pixels. LibCSS can now convert the units from the stylesheet to pixels. Client must also provide default font size and line height for handling viewport and root element relative sizes.
* Media queries: Start implementing feature matching.Michael Drake2019-05-061-5/+85
| | | | | | | | | | | | Currently we just look at: - width - height TODO: - Unit conversion - Use interned string comparison
* lexer: Emit ">=" tokens.Michael Drake2019-05-061-0/+18
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* Media queries: Pass the right tokens to mq_populate_value.Michael Drake2019-05-061-2/+2
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* lexer: Emit "<=" as a CSS_TOKEN_CHAR.Michael Drake2019-05-061-0/+5
| | | | | | | Previously the "<" was output as a CSS_TOKEN_CHAR, and the "=" was in the next token. CSS media queries adds "<=".
* Media queries: A query without a type defaults to type: all.Michael Drake2019-05-061-2/+6
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* Media queries: Convert to level 4 range in the correct place.Michael Drake2019-05-061-6/+6
| | | | | In mq_parse_range we already have a level 4 range. We need to convert <mf-plain> in mq_parse_media_feature.
* Media queries: Reverse operator for level 4 range conversion.Michael Drake2019-05-061-2/+2
| | | | First op/value are encoded as `value op name`.
* Fix typo in assertion.Michael Drake2019-05-051-1/+1
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* Media queries: Selection: Start implementing mq matching.Michael Drake2019-05-051-8/+60
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* Media queries: Parse: Convert level 3 style ranges to level 4.Michael Drake2019-05-051-0/+57
| | | | This will make the selection code's life easier.
* Media queries: Intern the query descriptor name as lower case.Michael Drake2019-05-051-1/+4
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* Media queries: Imported sheets: Media type falls back to "all".Michael Drake2019-05-051-1/+9
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* Media queries: Update selection API to support media queries.Michael Drake2019-05-045-22/+44
| | | | | | | | | | | | | | | | | | | | | The API changes are: 1. When building a selection context, stylesheets added with `css_select_ctx_{append|insert}_sheet()` now have to have media strings associcated with them. Previously they took a simple bitfield for CSS media type. 2. When selecting for an element, the client needs to specify the current media requirements. Previously it only had to provide the bitfield for CSS media type. 3. Same for the css_select_font_faces API. The selection handling has been updated to handle the new API, however it is currently only looking at the media type when performing selection. Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
* Media queries: Fix documentation typo.Michael Drake2019-05-041-1/+1
| | | | Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
* Media queries: Selection: For now, we just say the condition matches.Michael Drake2019-05-041-1/+2
| | | | Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
* Media queries: Validate the query string parameters.Michael Drake2019-05-041-0/+4
| | | | Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
* Media queries: Squash cond_parts parts leak.Michael Drake2019-05-041-0/+1
| | | | Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
* Stylesheet: Drop temporary code to test media query parsing.Michael Drake2019-03-101-7/+0
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* Media queries: Move css_parse_media_query to parse/mq.c file.Michael Drake2019-03-103-106/+107
| | | | It's now exposed in the mq.h header too.
* Media queries: Make css_parse_media_query return the parsed css_mq_query.Michael Drake2019-03-101-9/+28
| | | | | This converts the experimental code to test the media query parsing into a useful function.
* Media queries: Drop parse debug output.Michael Drake2019-03-101-17/+1
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* Parse: simplify token vector cleanup.John-Mark Bell2019-03-101-48/+28
| | | | | | There's not much point having every call site have to call two functions every time they want to clean the token vector. Instead, have a single function call to do both parts of the cleanup.
* Parse: use an explicit state for media queries.John-Mark Bell2019-03-101-3/+31
| | | | | This simply wraps the existing at-rule parser but is able to clean up afterwards.
* Media queries: Ensure values get destroyed.Michael Drake2019-03-101-5/+16
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* Media Queries: fix parsing of media-conditionJohn-Mark Bell2019-03-101-5/+6
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