malta-slides/node_modules/@marp-team/marpit/lib/markdown/directives/parse.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.parse = exports.default = void 0;
var _markdownItFrontMatter = _interopRequireDefault(require("markdown-it-front-matter"));
var _plugin = _interopRequireDefault(require("../../plugin"));
var _comment = require("../comment");
var directives = _interopRequireWildcard(require("./directives"));
var _yaml = require("./yaml");
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
/** @module */

const isDirectiveComment = token => token.type === 'marpit_comment' && token.meta.marpitParsedDirectives;

/**
 * Parse Marpit directives and store result to the slide token meta.
 *
 * Marpit comment plugin ans slide plugin requires already loaded to
 * markdown-it instance.
 *
 * @function parse
 * @param {MarkdownIt} md markdown-it instance.
 * @param {Object} [opts]
 * @param {boolean} [opts.frontMatter=true] Switch feature to support YAML
 *     front-matter. If true, you can use Jekyll style directive setting to the
 *     first page.
 */
function _parse(md, opts = {}) {
  const {
    marpit
  } = md;
  const applyBuiltinDirectives = (newProps, builtinDirectives) => {
    let ret = {};
    for (const prop of Object.keys(newProps)) {
      if (builtinDirectives[prop]) {
        ret = {
          ...ret,
          ...builtinDirectives[prop](newProps[prop], marpit)
        };
      } else {
        ret[prop] = newProps[prop];
      }
    }
    return ret;
  };

  // Front-matter support
  const frontMatter = opts.frontMatter === undefined ? true : !!opts.frontMatter;
  let frontMatterObject = {};
  if (frontMatter) {
    md.core.ruler.before('block', 'marpit_directives_front_matter', state => {
      frontMatterObject = {};
      if (!state.inlineMode) marpit.lastGlobalDirectives = {};
    });
    md.use(_markdownItFrontMatter.default, fm => {
      frontMatterObject.text = fm;
      const parsed = (0, _yaml.yaml)(fm, marpit.options.looseYAML ? [...Object.keys(marpit.customDirectives.global), ...Object.keys(marpit.customDirectives.local)] : false);
      if (parsed !== false) frontMatterObject.yaml = parsed;
    });
  }

  // Parse global directives
  md.core.ruler.after('inline', 'marpit_directives_global_parse', state => {
    if (state.inlineMode) return;
    let globalDirectives = {};
    const applyDirectives = obj => {
      let recognized = false;
      for (const key of Object.keys(obj)) {
        if (directives.globals[key]) {
          recognized = true;
          globalDirectives = {
            ...globalDirectives,
            ...directives.globals[key](obj[key], marpit)
          };
        } else if (marpit.customDirectives.global[key]) {
          recognized = true;
          globalDirectives = {
            ...globalDirectives,
            ...applyBuiltinDirectives(marpit.customDirectives.global[key](obj[key], marpit), directives.globals)
          };
        }
      }
      return recognized;
    };
    if (frontMatterObject.yaml) applyDirectives(frontMatterObject.yaml);
    for (const token of state.tokens) {
      if (isDirectiveComment(token) && applyDirectives(token.meta.marpitParsedDirectives)) {
        (0, _comment.markAsParsed)(token, 'directive');
      } else if (token.type === 'inline') {
        for (const t of token.children) {
          if (isDirectiveComment(t) && applyDirectives(t.meta.marpitParsedDirectives)) (0, _comment.markAsParsed)(t, 'directive');
        }
      }
    }
    marpit.lastGlobalDirectives = {
      ...globalDirectives
    };
  });

  // Parse local directives and apply meta to slide
  md.core.ruler.after('marpit_slide', 'marpit_directives_parse', state => {
    if (state.inlineMode) return;
    const slides = [];
    const cursor = {
      slide: undefined,
      local: {},
      spot: {}
    };
    const applyDirectives = obj => {
      let recognized = false;
      for (const key of Object.keys(obj)) {
        if (directives.locals[key]) {
          recognized = true;
          cursor.local = {
            ...cursor.local,
            ...directives.locals[key](obj[key], marpit)
          };
        } else if (marpit.customDirectives.local[key]) {
          recognized = true;
          cursor.local = {
            ...cursor.local,
            ...applyBuiltinDirectives(marpit.customDirectives.local[key](obj[key], marpit), directives.locals)
          };
        }

        // Spot directives
        // (Apply local directive to only current slide by prefix "_")
        if (key.startsWith('_')) {
          const spotKey = key.slice(1);
          if (directives.locals[spotKey]) {
            recognized = true;
            cursor.spot = {
              ...cursor.spot,
              ...directives.locals[spotKey](obj[key], marpit)
            };
          } else if (marpit.customDirectives.local[spotKey]) {
            recognized = true;
            cursor.spot = {
              ...cursor.spot,
              ...applyBuiltinDirectives(marpit.customDirectives.local[spotKey](obj[key], marpit), directives.locals)
            };
          }
        }
      }
      return recognized;
    };
    if (frontMatterObject.yaml) applyDirectives(frontMatterObject.yaml);
    for (const token of state.tokens) {
      if (token.meta && token.meta.marpitSlideElement === 1) {
        // Initialize Marpit directives meta
        token.meta.marpitDirectives = {};
        slides.push(token);
        cursor.slide = token;
      } else if (token.meta && token.meta.marpitSlideElement === -1) {
        // Assign local and spot directives to meta
        cursor.slide.meta.marpitDirectives = {
          ...cursor.slide.meta.marpitDirectives,
          ...cursor.local,
          ...cursor.spot
        };
        cursor.spot = {};
      } else if (isDirectiveComment(token) && applyDirectives(token.meta.marpitParsedDirectives)) {
        (0, _comment.markAsParsed)(token, 'directive');
      } else if (token.type === 'inline') {
        for (const t of token.children) {
          if (isDirectiveComment(t) && applyDirectives(t.meta.marpitParsedDirectives)) (0, _comment.markAsParsed)(t, 'directive');
        }
      }
    }

    // Assign global directives to meta
    for (const token of slides) token.meta.marpitDirectives = {
      ...token.meta.marpitDirectives,
      ...marpit.lastGlobalDirectives
    };
  });
}
const parse = exports.parse = (0, _plugin.default)(_parse);
var _default = exports.default = parse;