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/**
* @author Titus Wormer
* @copyright 2015 Titus Wormer
* @license MIT
* @module remark:parse
* @fileoverview Markdown parser.
*/
'use strict';
var xtend = require('xtend');
var toggle = require('state-toggle');
var vfileLocation = require('vfile-location');
var unescape = require('./unescape');
var decode = require('./decode');
var tokenizer = require('./tokenizer');
module.exports = Parser;
/* Construct a new parser. */
function Parser(doc, file) {
this.file = file;
this.offset = {};
this.options = xtend(this.options);
this.setOptions({});
this.inList = false;
this.inBlock = false;
this.inLink = false;
this.atStart = true;
this.toOffset = vfileLocation(file).toOffset;
this.unescape = unescape(this, 'escape');
this.decode = decode(this);
}
/* Prototype. */
var proto = Parser.prototype;
/* Expose core. */
proto.setOptions = require('./set-options');
proto.parse = require('./parse');
/* Expose `defaults`. */
proto.options = require('./defaults');
/* Enter and exit helpers. */
proto.exitStart = toggle('atStart', true);
proto.enterList = toggle('inList', false);
proto.enterLink = toggle('inLink', false);
proto.enterBlock = toggle('inBlock', false);
/* Nodes that can interupt a paragraph:
*
* ```markdown
* A paragraph, followed by a thematic break.
* ___
* ```
*
* In the above example, the thematic break “interupts”
* the paragraph. */
proto.interruptParagraph = [
['thematicBreak'],
['atxHeading'],
['fencedCode'],
['blockquote'],
['html'],
['setextHeading', {commonmark: false}],
['definition', {commonmark: false}],
['footnote', {commonmark: false}]
];
/* Nodes that can interupt a list:
*
* ```markdown
* - One
* ___
* ```
*
* In the above example, the thematic break “interupts”
* the list. */
proto.interruptList = [
['fencedCode', {pedantic: false}],
['thematicBreak', {pedantic: false}],
['definition', {commonmark: false}],
['footnote', {commonmark: false}]
];
/* Nodes that can interupt a blockquote:
*
* ```markdown
* > A paragraph.
* ___
* ```
*
* In the above example, the thematic break “interupts”
* the blockquote. */
proto.interruptBlockquote = [
['indentedCode', {commonmark: true}],
['fencedCode', {commonmark: true}],
['atxHeading', {commonmark: true}],
['setextHeading', {commonmark: true}],
['thematicBreak', {commonmark: true}],
['html', {commonmark: true}],
['list', {commonmark: true}],
['definition', {commonmark: false}],
['footnote', {commonmark: false}]
];
/* Handlers. */
proto.blockTokenizers = {
yamlFrontMatter: require('./tokenize/yaml'),
newline: require('./tokenize/newline'),
indentedCode: require('./tokenize/code-indented'),
fencedCode: require('./tokenize/code-fenced'),
blockquote: require('./tokenize/blockquote'),
atxHeading: require('./tokenize/heading-atx'),
thematicBreak: require('./tokenize/thematic-break'),
list: require('./tokenize/list'),
setextHeading: require('./tokenize/heading-setext'),
html: require('./tokenize/html-block'),
footnote: require('./tokenize/footnote-definition'),
definition: require('./tokenize/definition'),
table: require('./tokenize/table'),
paragraph: require('./tokenize/paragraph')
};
proto.inlineTokenizers = {
escape: require('./tokenize/escape'),
autoLink: require('./tokenize/auto-link'),
url: require('./tokenize/url'),
html: require('./tokenize/html-inline'),
link: require('./tokenize/link'),
reference: require('./tokenize/reference'),
strong: require('./tokenize/strong'),
emphasis: require('./tokenize/emphasis'),
deletion: require('./tokenize/delete'),
code: require('./tokenize/code-inline'),
break: require('./tokenize/break'),
text: require('./tokenize/text')
};
/* Expose precedence. */
proto.blockMethods = keys(proto.blockTokenizers);
proto.inlineMethods = keys(proto.inlineTokenizers);
/* Tokenizers. */
proto.tokenizeBlock = tokenizer('block');
proto.tokenizeInline = tokenizer('inline');
proto.tokenizeFactory = tokenizer;
/* Get all keys in `value`. */
function keys(value) {
var result = [];
var key;
for (key in value) {
result.push(key);
}
return result;
}
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