wikimedia/mediawiki-core

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includes/libs/Message/MessageValue.php

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<?php

namespace Wikimedia\Message;

use MediaWiki\Json\JsonDeserializable;
use MediaWiki\Json\JsonDeserializableTrait;
use MediaWiki\Json\JsonDeserializer;
use Stringable;

/**
 * Value object representing a message for i18n.
 *
 * A MessageValue holds a key and an array of parameters. It can be converted
 * to a string in a particular language using formatters obtained from an
 * IMessageFormatterFactory.
 *
 * MessageValues are pure value objects and are newable and (de)serializable.
 *
 * @newable
 */
class MessageValue implements JsonDeserializable {
    use JsonDeserializableTrait;

    /** @var string */
    private $key;

    /** @var MessageParam[] */
    private $params;

    /**
     * @stable to call
     *
     * @param string $key
     * @param (MessageParam|MessageValue|string|int|float)[] $params Values that are not instances
     *  of MessageParam are wrapped using ParamType::TEXT.
     */
    public function __construct( $key, $params = [] ) {
        $this->key = $key;
        $this->params = [];
        $this->params( ...$params );
    }

    /**
     * Static constructor for easier chaining of `->params()` methods
     * @param string $key
     * @param (MessageParam|MessageValue|string|int|float)[] $params
     * @return MessageValue
     */
    public static function new( $key, $params = [] ) {
        return new MessageValue( $key, $params );
    }

    /**
     * Get the message key
     *
     * @return string
     */
    public function getKey() {
        return $this->key;
    }

    /**
     * Get the parameter array
     *
     * @return MessageParam[]
     */
    public function getParams() {
        return $this->params;
    }

    /**
     * Chainable mutator which adds text parameters and MessageParam parameters
     *
     * @param MessageParam|MessageValue|string|int|float ...$values
     * @return $this
     */
    public function params( ...$values ) {
        foreach ( $values as $value ) {
            if ( $value instanceof MessageParam ) {
                $this->params[] = $value;
            } else {
                $this->params[] = new ScalarParam( ParamType::TEXT, $value );
            }
        }
        return $this;
    }

    /**
     * Chainable mutator which adds text parameters with a common type
     *
     * @param string $type One of the ParamType constants
     * @param MessageValue|string|int|float ...$values Scalar values
     * @return $this
     */
    public function textParamsOfType( $type, ...$values ) {
        foreach ( $values as $value ) {
            $this->params[] = new ScalarParam( $type, $value );
        }
        return $this;
    }

    /**
     * Chainable mutator which adds object parameters
     *
     * @deprecated since 1.43
     * @param Stringable ...$values stringable object values
     * @return $this
     */
    public function objectParams( ...$values ) {
        wfDeprecated( __METHOD__, '1.43' );
        foreach ( $values as $value ) {
            $this->params[] = new ScalarParam( ParamType::OBJECT, $value );
        }
        return $this;
    }

    /**
     * Chainable mutator which adds list parameters with a common type
     *
     * @param string $listType One of the ListType constants
     * @param (MessageParam|MessageValue|string|int|float)[] ...$values Each value
     *  is an array of items suitable to pass as $params to ListParam::__construct()
     * @return $this
     */
    public function listParamsOfType( $listType, ...$values ) {
        foreach ( $values as $value ) {
            $this->params[] = new ListParam( $listType, $value );
        }
        return $this;
    }

    /**
     * Chainable mutator which adds parameters of type text (ParamType::TEXT).
     *
     * @param MessageValue|string|int|float ...$values
     * @return $this
     */
    public function textParams( ...$values ) {
        return $this->textParamsOfType( ParamType::TEXT, ...$values );
    }

    /**
     * Chainable mutator which adds numeric parameters (ParamType::NUM).
     *
     * @param int|float ...$values
     * @return $this
     */
    public function numParams( ...$values ) {
        return $this->textParamsOfType( ParamType::NUM, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a duration specified
     * in seconds (ParamType::DURATION_LONG).
     *
     * This is similar to shorDurationParams() except that the result will be
     * more verbose.
     *
     * @param int|float ...$values
     * @return $this
     */
    public function longDurationParams( ...$values ) {
        return $this->textParamsOfType( ParamType::DURATION_LONG, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a duration specified
     * in seconds (ParamType::DURATION_SHORT).
     *
     * This is similar to longDurationParams() except that the result will be more
     * compact.
     *
     * @param int|float ...$values
     * @return $this
     */
    public function shortDurationParams( ...$values ) {
        return $this->textParamsOfType( ParamType::DURATION_SHORT, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are an expiry timestamp (ParamType::EXPIRY).
     *
     * @param string ...$values Timestamp as accepted by the Wikimedia\Timestamp library,
     *  or "infinity"
     * @return $this
     */
    public function expiryParams( ...$values ) {
        return $this->textParamsOfType( ParamType::EXPIRY, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a date-time timestamp (ParamType::DATETIME).
     *
     * @since 1.36
     * @param string ...$values Timestamp as accepted by the Wikimedia\Timestamp library.
     * @return $this
     */
    public function dateTimeParams( ...$values ) {
        return $this->textParamsOfType( ParamType::DATETIME, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a date timestamp (ParamType::DATE).
     *
     * @since 1.36
     * @param string ...$values Timestamp as accepted by the Wikimedia\Timestamp library.
     * @return $this
     */
    public function dateParams( ...$values ) {
        return $this->textParamsOfType( ParamType::DATE, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a time timestamp (ParamType::TIME).
     *
     * @since 1.36
     * @param string ...$values Timestamp as accepted by the Wikimedia\Timestamp library.
     * @return $this
     */
    public function timeParams( ...$values ) {
        return $this->textParamsOfType( ParamType::TIME, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a user group (ParamType::GROUP).
     *
     * @since 1.38
     * @param string ...$values User Groups
     * @return $this
     */
    public function userGroupParams( ...$values ) {
        return $this->textParamsOfType( ParamType::GROUP, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a number of bytes (ParamType::SIZE).
     *
     * @param int ...$values
     * @return $this
     */
    public function sizeParams( ...$values ) {
        return $this->textParamsOfType( ParamType::SIZE, ...$values );
    }

    /**
     * Chainable mutator which adds parameters which are a number of bits per
     * second (ParamType::BITRATE).
     *
     * @param int|float ...$values
     * @return $this
     */
    public function bitrateParams( ...$values ) {
        return $this->textParamsOfType( ParamType::BITRATE, ...$values );
    }

    /**
     * Chainable mutator which adds "raw" parameters (ParamType::RAW).
     *
     * Raw parameters are substituted after formatter processing. The caller is responsible
     * for ensuring that the value will be safe for the intended output format, and
     * documenting what that intended output format is.
     *
     * @param string ...$values
     * @return $this
     */
    public function rawParams( ...$values ) {
        return $this->textParamsOfType( ParamType::RAW, ...$values );
    }

    /**
     * Chainable mutator which adds plaintext parameters (ParamType::PLAINTEXT).
     *
     * Plaintext parameters are substituted after formatter processing. The value
     * will be escaped by the formatter as appropriate for the target output format
     * so as to be represented as plain text rather than as any sort of markup.
     *
     * @param string ...$values
     * @return $this
     */
    public function plaintextParams( ...$values ) {
        return $this->textParamsOfType( ParamType::PLAINTEXT, ...$values );
    }

    /**
     * Chainable mutator which adds comma lists (ListType::COMMA).
     *
     * The list parameters thus created are formatted as a comma-separated list,
     * or some local equivalent.
     *
     * @param (MessageParam|MessageValue|string|int|float)[] ...$values Each value
     *  is an array of items suitable to pass as $params to ListParam::__construct()
     * @return $this
     */
    public function commaListParams( ...$values ) {
        return $this->listParamsOfType( ListType::COMMA, ...$values );
    }

    /**
     * Chainable mutator which adds semicolon lists (ListType::SEMICOLON).
     *
     * The list parameters thus created are formatted as a semicolon-separated
     * list, or some local equivalent.
     *
     * @param (MessageParam|MessageValue|string|int|float)[] ...$values Each value
     *  is an array of items suitable to pass as $params to ListParam::__construct()
     * @return $this
     */
    public function semicolonListParams( ...$values ) {
        return $this->listParamsOfType( ListType::SEMICOLON, ...$values );
    }

    /**
     * Chainable mutator which adds pipe lists (ListType::PIPE).
     *
     * The list parameters thus created are formatted as a pipe ("|") -separated
     * list, or some local equivalent.
     *
     * @param (MessageParam|MessageValue|string|int|float)[] ...$values Each value
     *  is an array of items suitable to pass as $params to ListParam::__construct()
     * @return $this
     */
    public function pipeListParams( ...$values ) {
        return $this->listParamsOfType( ListType::PIPE, ...$values );
    }

    /**
     * Chainable mutator which adds natural-language lists (ListType::AND).
     *
     * The list parameters thus created, when formatted, are joined as in natural
     * language. In English, this means a comma-separated list, with the last
     * two elements joined with "and".
     *
     * @param (MessageParam|string)[] ...$values
     * @return $this
     */
    public function textListParams( ...$values ) {
        return $this->listParamsOfType( ListType::AND, ...$values );
    }

    /**
     * Dump the object for testing/debugging
     *
     * @return string
     */
    public function dump() {
        $contents = '';
        foreach ( $this->params as $param ) {
            $contents .= $param->dump();
        }
        return '<message key="' . htmlspecialchars( $this->key ) . '">' .
            $contents . '</message>';
    }

    protected function toJsonArray(): array {
        // WARNING: When changing how this class is serialized, follow the instructions
        // at <https://www.mediawiki.org/wiki/Manual:Parser_cache/Serialization_compatibility>!
        return [
            'key' => $this->key,
            'params' => $this->params,
        ];
    }

    public static function newFromJsonArray( JsonDeserializer $deserializer, array $json ) {
        // WARNING: When changing how this class is serialized, follow the instructions
        // at <https://www.mediawiki.org/wiki/Manual:Parser_cache/Serialization_compatibility>!
        return new self( $json['key'], $json['params'] );
    }
}