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Must only shift if not also\n\t\t\t\t// head, since if both head and tail, there is no previous.\n\t\t\t\tif ( node === tail ) {\n\t\t\t\t\ttail = node.prev;\n\t\t\t\t}\n\n\t\t\t\t// Adjust siblings to point to each other. If node was tail,\n\t\t\t\t// this also handles new tail's empty `next` assignment.\n\t\t\t\tnode.prev.next = node.next;\n\t\t\t\tif ( node.next ) {\n\t\t\t\t\tnode.next.prev = node.prev;\n\t\t\t\t}\n\n\t\t\t\tnode.next = head;\n\t\t\t\tnode.prev = null;\n\t\t\t\thead.prev = node;\n\t\t\t\thead = node;\n\t\t\t}\n\n\t\t\t// Return immediately\n\t\t\treturn node.val;\n\t\t}\n\n\t\t// No cached value found. Continue to insertion phase:\n\n\t\t// Create a copy of arguments (avoid leaking deoptimization)\n\t\targs = new Array( len );\n\t\tfor ( i = 0; i < len; i++ ) {\n\t\t\targs[ i ] = arguments[ i ];\n\t\t}\n\n\t\tnode = {\n\t\t\targs: args,\n\n\t\t\t// Generate the result from original function\n\t\t\tval: fn.apply( null, args )\n\t\t};\n\n\t\t// Don't need to check whether node is already head, since it would\n\t\t// have been returned above already if it was\n\n\t\t// Shift existing head down list\n\t\tif ( head ) {\n\t\t\thead.prev = node;\n\t\t\tnode.next = head;\n\t\t} else {\n\t\t\t// If no head, follows that there's no tail (at initial or reset)\n\t\t\ttail = node;\n\t\t}\n\n\t\t// Trim tail if we're reached max size and are pending cache insertion\n\t\tif ( size === maxSize ) {\n\t\t\ttail = tail.prev;\n\t\t\ttail.next = null;\n\t\t} else {\n\t\t\tsize++;\n\t\t}\n\n\t\thead = node;\n\n\t\treturn node.val;\n\t}\n\n\tmemoized.clear = function() {\n\t\thead = null;\n\t\ttail = null;\n\t\tsize = 0;\n\t};\n\n\tif ( process.env.NODE_ENV === 'test' ) {\n\t\t// Cache is not exposed in the public API, but used in tests to ensure\n\t\t// expected list progression\n\t\tmemoized.getCache = function() {\n\t\t\treturn [ head, tail, size ];\n\t\t};\n\t}\n\n\treturn memoized;\n};\n","/**\n * Internal dependencies\n */\nimport { extend, pick, isString, isEqual, forEach, isNumber } from 'lodash';\nimport memize from 'memize';\n\n/**\n * Shortcode attributes object.\n *\n * @typedef {Object} WPShortcodeAttrs\n *\n * @property {Object} named Object with named attributes.\n * @property {Array} numeric Array with numeric attributes.\n */\n\n/**\n * Shortcode object.\n *\n * @typedef {Object} WPShortcode\n *\n * @property {string} tag Shortcode tag.\n * @property {WPShortcodeAttrs} attrs Shortcode attributes.\n * @property {string} content Shortcode content.\n * @property {string} type Shortcode type: `self-closing`,\n * `closed`, or `single`.\n */\n\n/**\n * @typedef {Object} WPShortcodeMatch\n *\n * @property {number} index Index the shortcode is found at.\n * @property {string} content Matched content.\n * @property {WPShortcode} shortcode Shortcode instance of the match.\n */\n\n/**\n * Find the next matching shortcode.\n *\n * @param {string} tag Shortcode tag.\n * @param {string} text Text to search.\n * @param {number} index Index to start search from.\n *\n * @return {?WPShortcodeMatch} Matched information.\n */\nexport function next( tag, text, index = 0 ) {\n\tconst re = regexp( tag );\n\n\tre.lastIndex = index;\n\n\tconst match = re.exec( text );\n\n\tif ( ! match ) {\n\t\treturn;\n\t}\n\n\t// If we matched an escaped shortcode, try again.\n\tif ( '[' === match[ 1 ] && ']' === match[ 7 ] ) {\n\t\treturn next( tag, text, re.lastIndex );\n\t}\n\n\tconst result = {\n\t\tindex: match.index,\n\t\tcontent: match[ 0 ],\n\t\tshortcode: fromMatch( match ),\n\t};\n\n\t// If we matched a leading `[`, strip it from the match and increment the\n\t// index accordingly.\n\tif ( match[ 1 ] ) {\n\t\tresult.content = result.content.slice( 1 );\n\t\tresult.index++;\n\t}\n\n\t// If we matched a trailing `]`, strip it from the match.\n\tif ( match[ 7 ] ) {\n\t\tresult.content = result.content.slice( 0, -1 );\n\t}\n\n\treturn result;\n}\n\n/**\n * Replace matching shortcodes in a block of text.\n *\n * @param {string} tag Shortcode tag.\n * @param {string} text Text to search.\n * @param {Function} callback Function to process the match and return\n * replacement string.\n *\n * @return {string} Text with shortcodes replaced.\n */\nexport function replace( tag, text, callback ) {\n\treturn text.replace( regexp( tag ), ( match, left, $3, attrs, slash, content, closing, right ) => {\n\t\t// If both extra brackets exist, the shortcode has been properly\n\t\t// escaped.\n\t\tif ( left === '[' && right === ']' ) {\n\t\t\treturn match;\n\t\t}\n\n\t\t// Create the match object and pass it through the callback.\n\t\tconst result = callback( fromMatch( arguments ) );\n\n\t\t// Make sure to return any of the extra brackets if they weren't used to\n\t\t// escape the shortcode.\n\t\treturn result ? left + result + right : match;\n\t} );\n}\n\n/**\n * Generate a string from shortcode parameters.\n *\n * Creates a shortcode instance and returns a string.\n *\n * Accepts the same `options` as the `shortcode()` constructor, containing a\n * `tag` string, a string or object of `attrs`, a boolean indicating whether to\n * format the shortcode using a `single` tag, and a `content` string.\n *\n * @param {Object} options\n *\n * @return {string} String representation of the shortcode.\n */\nexport function string( options ) {\n\treturn new shortcode( options ).string();\n}\n\n/**\n * Generate a RegExp to identify a shortcode.\n *\n * The base regex is functionally equivalent to the one found in\n * `get_shortcode_regex()` in `wp-includes/shortcodes.php`.\n *\n * Capture groups:\n *\n * 1. An extra `[` to allow for escaping shortcodes with double `[[]]`\n * 2. The shortcode name\n * 3. The shortcode argument list\n * 4. The self closing `/`\n * 5. The content of a shortcode when it wraps some content.\n * 6. The closing tag.\n * 7. An extra `]` to allow for escaping shortcodes with double `[[]]`\n *\n * @param {string} tag Shortcode tag.\n *\n * @return {RegExp} Shortcode RegExp.\n */\nexport function regexp( tag ) {\n\treturn new RegExp( '\\\\[(\\\\[?)(' + tag + ')(?![\\\\w-])([^\\\\]\\\\/]*(?:\\\\/(?!\\\\])[^\\\\]\\\\/]*)*?)(?:(\\\\/)\\\\]|\\\\](?:([^\\\\[]*(?:\\\\[(?!\\\\/\\\\2\\\\])[^\\\\[]*)*)(\\\\[\\\\/\\\\2\\\\]))?)(\\\\]?)', 'g' );\n}\n\n/**\n * Parse shortcode attributes.\n *\n * Shortcodes accept many types of attributes. These can chiefly be divided into\n * named and numeric attributes:\n *\n * Named attributes are assigned on a key/value basis, while numeric attributes\n * are treated as an array.\n *\n * Named attributes can be formatted as either `name=\"value\"`, `name='value'`,\n * or `name=value`. Numeric attributes can be formatted as `\"value\"` or just\n * `value`.\n *\n * @param {string} text Serialised shortcode attributes.\n *\n * @return {WPShortcodeAttrs} Parsed shortcode attributes.\n */\nexport const attrs = memize( ( text ) => {\n\tconst named = {};\n\tconst numeric = [];\n\n\t// This regular expression is reused from `shortcode_parse_atts()` in\n\t// `wp-includes/shortcodes.php`.\n\t//\n\t// Capture groups:\n\t//\n\t// 1. An attribute name, that corresponds to...\n\t// 2. a value in double quotes.\n\t// 3. An attribute name, that corresponds to...\n\t// 4. a value in single quotes.\n\t// 5. An attribute name, that corresponds to...\n\t// 6. an unquoted value.\n\t// 7. A numeric attribute in double quotes.\n\t// 8. A numeric attribute in single quotes.\n\t// 9. An unquoted numeric attribute.\n\tconst pattern = /([\\w-]+)\\s*=\\s*\"([^\"]*)\"(?:\\s|$)|([\\w-]+)\\s*=\\s*'([^']*)'(?:\\s|$)|([\\w-]+)\\s*=\\s*([^\\s'\"]+)(?:\\s|$)|\"([^\"]*)\"(?:\\s|$)|'([^']*)'(?:\\s|$)|(\\S+)(?:\\s|$)/g;\n\n\t// Map zero-width spaces to actual spaces.\n\ttext = text.replace( /[\\u00a0\\u200b]/g, ' ' );\n\n\tlet match;\n\n\t// Match and normalize attributes.\n\twhile ( ( match = pattern.exec( text ) ) ) {\n\t\tif ( match[ 1 ] ) {\n\t\t\tnamed[ match[ 1 ].toLowerCase() ] = match[ 2 ];\n\t\t} else if ( match[ 3 ] ) {\n\t\t\tnamed[ match[ 3 ].toLowerCase() ] = match[ 4 ];\n\t\t} else if ( match[ 5 ] ) {\n\t\t\tnamed[ match[ 5 ].toLowerCase() ] = match[ 6 ];\n\t\t} else if ( match[ 7 ] ) {\n\t\t\tnumeric.push( match[ 7 ] );\n\t\t} else if ( match[ 8 ] ) {\n\t\t\tnumeric.push( match[ 8 ] );\n\t\t} else if ( match[ 9 ] ) {\n\t\t\tnumeric.push( match[ 9 ] );\n\t\t}\n\t}\n\n\treturn { named, numeric };\n} );\n\n/**\n * Generate a Shortcode Object from a RegExp match.\n *\n * Accepts a `match` object from calling `regexp.exec()` on a `RegExp` generated\n * by `regexp()`. `match` can also be set to the `arguments` from a callback\n * passed to `regexp.replace()`.\n *\n * @param {Array} match Match array.\n *\n * @return {WPShortcode} Shortcode instance.\n */\nexport function fromMatch( match ) {\n\tlet type;\n\n\tif ( match[ 4 ] ) {\n\t\ttype = 'self-closing';\n\t} else if ( match[ 6 ] ) {\n\t\ttype = 'closed';\n\t} else {\n\t\ttype = 'single';\n\t}\n\n\treturn new shortcode( {\n\t\ttag: match[ 2 ],\n\t\tattrs: match[ 3 ],\n\t\ttype,\n\t\tcontent: match[ 5 ],\n\t} );\n}\n\n/**\n * Creates a shortcode instance.\n *\n * To access a raw representation of a shortcode, pass an `options` object,\n * containing a `tag` string, a string or object of `attrs`, a string indicating\n * the `type` of the shortcode ('single', 'self-closing', or 'closed'), and a\n * `content` string.\n *\n * @param {Object} options Options as described.\n *\n * @return {WPShortcode} Shortcode instance.\n */\nconst shortcode = extend( function( options ) {\n\textend( this, pick( options || {}, 'tag', 'attrs', 'type', 'content' ) );\n\n\tconst attributes = this.attrs;\n\n\t// Ensure we have a correctly formatted `attrs` object.\n\tthis.attrs = {\n\t\tnamed: {},\n\t\tnumeric: [],\n\t};\n\n\tif ( ! attributes ) {\n\t\treturn;\n\t}\n\n\t// Parse a string of attributes.\n\tif ( isString( attributes ) ) {\n\t\tthis.attrs = attrs( attributes );\n\t// Identify a correctly formatted `attrs` object.\n\t} else if ( isEqual( Object.keys( attributes ), [ 'named', 'numeric' ] ) ) {\n\t\tthis.attrs = attributes;\n\t// Handle a flat object of attributes.\n\t} else {\n\t\tforEach( attributes, ( value, key ) => {\n\t\t\tthis.set( key, value );\n\t\t} );\n\t}\n}, {\n\tnext,\n\treplace,\n\tstring,\n\tregexp,\n\tattrs,\n\tfromMatch,\n} );\n\nextend( shortcode.prototype, {\n\n\t/**\n\t * Get a shortcode attribute.\n\t *\n\t * Automatically detects whether `attr` is named or numeric and routes it\n\t * accordingly.\n\t *\n\t * @param {(number|string)} attr Attribute key.\n\t *\n\t * @return {string} Attribute value.\n\t */\n\tget( attr ) {\n\t\treturn this.attrs[ isNumber( attr ) ? 'numeric' : 'named' ][ attr ];\n\t},\n\n\t/**\n\t * Set a shortcode attribute.\n\t *\n\t * Automatically detects whether `attr` is named or numeric and routes it\n\t * accordingly.\n\t *\n\t * @param {(number|string)} attr Attribute key.\n\t * @param {string} value Attribute value.\n\t *\n\t * @return {WPShortcode} Shortcode instance.\n\t */\n\tset( attr, value ) {\n\t\tthis.attrs[ isNumber( attr ) ? 'numeric' : 'named' ][ attr ] = value;\n\t\treturn this;\n\t},\n\n\t/**\n\t * Transform the shortcode into a string.\n\t *\n\t * @return {string} String representation of the shortcode.\n\t */\n\tstring() {\n\t\tlet text = '[' + this.tag;\n\n\t\tforEach( this.attrs.numeric, ( value ) => {\n\t\t\tif ( /\\s/.test( value ) ) {\n\t\t\t\ttext += ' \"' + value + '\"';\n\t\t\t} else {\n\t\t\t\ttext += ' ' + value;\n\t\t\t}\n\t\t} );\n\n\t\tforEach( this.attrs.named, ( value, name ) => {\n\t\t\ttext += ' ' + name + '=\"' + value + '\"';\n\t\t} );\n\n\t\t// If the tag is marked as `single` or `self-closing`, close the tag and\n\t\t// ignore any additional content.\n\t\tif ( 'single' === this.type ) {\n\t\t\treturn text + ']';\n\t\t} else if ( 'self-closing' === this.type ) {\n\t\t\treturn text + ' /]';\n\t\t}\n\n\t\t// Complete the opening tag.\n\t\ttext += ']';\n\n\t\tif ( this.content ) {\n\t\t\ttext += this.content;\n\t\t}\n\n\t\t// Add the closing tag.\n\t\treturn text + '[/' + this.tag + ']';\n\t},\n\n} );\n\nexport default shortcode;\n","(function() { module.exports = this[\"lodash\"]; }());"],"sourceRoot":""} |