WP_Theme_JSON::process_pseudo_selectors( array $node, string $base_selector, array $settings, string $block_name, array|null $block_metadata = null, array|null $style_variation = null ): array

Compatibility

Present in 2 of the 5 tracked releases, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$nodearray

The node data (block or variation).

$base_selectorstring

The base selector.

$settingsarray

The theme settings.

$block_namestring

The block name.

$block_metadataarray|nulloptional

Metadata about the block to get styles for.Default: null

$style_variationarray|nulloptional

Style variation metadata.Default: null

Return value

array

Array of pseudo-selector declarations.

Performance profile

How much work a call to WP_Theme_JSON::process_pseudo_selectors() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Trivial

Touches nothing outside its own arguments.

Scaling

Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions

6–15

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 102.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

1

1 place in core call this, so the cost is paid more often than your own code shows.

What one call costs · 2 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Theme_JSON::process_pseudo_selectors() can have, taken from its control-flow graph on PHP 8.5.

Uses · 6

• WP_Theme_JSON::get_feature_declarations_for_node()Generates style declarations for a node's features e.g., color, border, typography etc. that have custom selectors in their related block's metadata.
• static::update_paragraph_text_indent_selector()
• static::update_button_width_declarations()
• static::get_block_style_variation_feature_selector()
• static::append_to_selector()
• static::compute_style_properties()

Used by · 1

• WP_Theme_JSON::get_styles_for_block()Gets the CSS rules for a particular block from theme.json.

Source code

View on Trac ↗View on GitHub ↗

965	private function process_pseudo_selectors( $node, $base_selector, $settings, $block_name, $block_metadata = null, $style_variation = null ) {966		$pseudo_declarations = array();967		$add_declarations    = static function ( $selector, $declarations ) use ( &$pseudo_declarations ) {968			if ( empty( $declarations ) ) {969				return;970			}971 972			if ( isset( $pseudo_declarations[ $selector ] ) ) {973				$pseudo_declarations[ $selector ] = array_merge(974					$pseudo_declarations[ $selector ],975					$declarations976				);977			} else {978				$pseudo_declarations[ $selector ] = $declarations;979			}980		};981 982		if ( ! isset( static::VALID_BLOCK_PSEUDO_SELECTORS[ $block_name ] ) ) {983			return $pseudo_declarations;984		}985 986		foreach ( static::VALID_BLOCK_PSEUDO_SELECTORS[ $block_name ] as $pseudo_selector ) {987			if ( isset( $node[ $pseudo_selector ] ) ) {988				$pseudo_node = $node[ $pseudo_selector ];989 990				if ( is_array( $block_metadata ) ) {991					$feature_declarations = $this->get_feature_declarations_for_node( $block_metadata, $pseudo_node );992					$feature_declarations = static::update_paragraph_text_indent_selector( $feature_declarations, $settings, $block_name );993					$feature_declarations = static::update_button_width_declarations( $feature_declarations, $settings );994 995					foreach ( $feature_declarations as $feature_selector => $declarations ) {996						$target_selector   = is_array( $style_variation )997							? static::get_block_style_variation_feature_selector( $style_variation, $feature_selector )998							: $feature_selector;999						$combined_selector = static::append_to_selector( $target_selector, $pseudo_selector );1000 1001						$add_declarations( $combined_selector, $declarations );1002					}1003				}1004 1005				$combined_selector = static::append_to_selector( $base_selector, $pseudo_selector );1006				$declarations      = static::compute_style_properties( $pseudo_node, $settings, null, null );1007				$add_declarations( $combined_selector, $declarations );1008			}1009		}1010 1011		return $pseudo_declarations;1012	}

Changelog

2 changes between 7.0.4 and 7.1.0.

1. 7.0.4
2. 7.1.0

Signature, return type and hooks compared across 2 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/class-wp-theme-json.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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