# all files / src/ tokens.js

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84.62% Branches 22/26
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     import {escapeQuotes} from './utils';

    /**
     * Token is a base class for all token types parsed.  Note we don't actually
     * use intheritance due to IE8's non-existent ES5 support.
     */
    export class Token {
      /**
       * Constructor.
       *
       * @param {string} type The type of the Token.
       * @param {Number} length The length of the Token text.
       */
      constructor(type, length) {
        this.type = type;
        this.length = length;
        this.text = '';
      }
    }

    /**
     * CommentToken represents comment tags.
     */
    export class CommentToken {
      /**
       * Constructor.
       *
       * @param {string} content The content of the comment
       * @param {Number} length The length of the Token text.
       */
      constructor(content, length) {
        this.type = 'comment';
        this.length = length || (content ? content.length : 0);
        this.text = '';
        this.content = content;
      }

      toString() {
        return `<!--${this.content}`;
      }
    }

    /**
     * CharsToken represents non-tag characters.
     */
    export class CharsToken {
      /**
       * Constructor.
       *
       * @param {Number} length The length of the Token text.
       */
      constructor(length) {
        this.type = 'chars';
        this.length = length;
        this.text = '';
      }

      toString() {
        return this.text;
      }
    }

    /**
     * TagToken is a base class for all tag-based Tokens.
     */
    export class TagToken {
      /**
       * Constructor.
       *
       * @param {string} type The type of the token.
       * @param {string} tagName The tag name.
       * @param {Number} length The length of the Token text.
       * @param {Object} attrs The dictionary of attributes and values
       * @param {Object} booleanAttrs If an entry has 'true' then the attribute
       *                              is a boolean attribute
       */
      constructor(type, tagName, length, attrs, booleanAttrs) {
        this.type = type;
        this.length = length;
        this.text = '';
        this.tagName = tagName;
        this.attrs = attrs;
        this.booleanAttrs = booleanAttrs;
        this.unary = false;
        this.html5Unary = false;
      }

      /**
       * Formats the given token tag.
       *
       * @param {TagToken} tok The TagToken to format.
       * @param {?string} [content=null] The content of the token.
       * @returns {string} The formatted tag.
       */
      static formatTag(tok, content = null) {
        let str = `<${tok.tagName}`;
        for (let key in tok.attrs) {
          Eif (tok.attrs.hasOwnProperty(key)) {
            str += ` ${key}`;

            const val = tok.attrs[key];
            if (typeof tok.booleanAttrs === 'undefined' ||
                typeof tok.booleanAttrs[key] === 'undefined') {
              str += `="${escapeQuotes(val)}"`;
            }
          }
        }

        if (tok.rest) {
          str += ` ${tok.rest}`;
        }

        if (tok.unary && !tok.html5Unary) {
          str += '/>';
        } else {
          str += '>';
        }

        if (content !== undefined && content !== null) {
          str += `${content}</${tok.tagName}>`;
        }

        return str;
      }
    }

    /**
     * StartTagToken represents a start token.
     */
    export class StartTagToken {
      /**
       * Constructor.
       *
       * @param {string} tagName The tag name.
       * @param {Number} length The length of the Token text
       * @param {Object} attrs The dictionary of attributes and values
       * @param {Object} booleanAttrs If an entry has 'true' then the attribute
       *                              is a boolean attribute
       * @param {boolean} unary True if the tag is a unary tag
       * @param {string} rest The rest of the content.
       */
      constructor(tagName, length, attrs, booleanAttrs, unary, rest) {
        this.type = 'startTag';
        this.length = length;
        this.text = '';
        this.tagName = tagName;
        this.attrs = attrs;
        this.booleanAttrs = booleanAttrs;
        this.html5Unary = false;
        this.unary = unary;
        this.rest = rest;
      }

      toString() {
        return TagToken.formatTag(this);
      }
    }

    /**
     * AtomicTagToken represents an atomic tag.
     */
    export class AtomicTagToken {
      /**
       * Constructor.
       *
       * @param {string} tagName The name of the tag.
       * @param {Number} length The length of the tag text.
       * @param {Object} attrs The attributes.
       * @param {Object} booleanAttrs If an entry has 'true' then the attribute
       *                              is a boolean attribute
       * @param {string} content The content of the tag.
       */
      constructor(tagName, length, attrs, booleanAttrs, content) {
        this.type = 'atomicTag';
        this.length = length;
        this.text = '';
        this.tagName = tagName;
        this.attrs = attrs;
        this.booleanAttrs = booleanAttrs;
        this.unary = false;
        this.html5Unary = false;
        this.content = content;
      }

      toString() {
        return TagToken.formatTag(this, this.content);
      }
    }

    /**
     * EndTagToken represents an end tag.
     */
    export class EndTagToken {
      /**
       * Constructor.
       *
       * @param {string} tagName The name of the tag.
       * @param {Number} length The length of the tag text.
       */
      constructor(tagName, length) {
        this.type = 'endTag';
        this.length = length;
        this.text = '';
        this.tagName = tagName;
      }

      toString() {
        return `</${this.tagName}>`;
      }
    }