Hand-written parser

.editorconfig

@@ -6,7 +6,7 @@ insert_final_newline = true
 trim_trailing_whitespace = true
 charset = utf-8
 indent_style = space
-indent_size = 4
+indent_size = 2
 
 # Input/output is 2-space indent
 [test/cases/*]

.jscsrc

@@ -3,5 +3,6 @@
     "preset": "crockford",
     "requireMultipleVarDecl": null,
     "requireCamelCaseOrUpperCaseIdentifiers": "ignoreProperties",
-    "disallowDanglingUnderscores": null
+    "disallowDanglingUnderscores": null,
+    "validateIndentation": 2
 }

lib/beautify.js

@@ -3,17 +3,17 @@ var beautifyWithBugs = require('js-beautify').html;
 var inlineElements = require('inline-elements');
 
 module.exports = function beautify(html) {
-    var originalOutput = beautifyWithBugs(html, {
-        indent_size: 2,
-        wrap_line_length: 0,
-        unformatted: ['emu-const', 'emu-val', 'emu-nt'].concat(inlineElements)
-    });
+  var originalOutput = beautifyWithBugs(html, {
+    indent_size: 2,
+    wrap_line_length: 0,
+    unformatted: ['emu-const', 'emu-val', 'emu-nt'].concat(inlineElements)
+  });
 
-    // https://github.com/beautify-web/js-beautify/issues/524#issuecomment-82791022
-    var fixNewlines = originalOutput.replace(/(<\/emu-[^>]+>)\n *<\/li>/g, '$1</li>');
+  // https://github.com/beautify-web/js-beautify/issues/524#issuecomment-82791022
+  var fixNewlines = originalOutput.replace(/(<\/emu-[^>]+>)\n *<\/li>/g, '$1</li>');
 
-    // Remove empty =""s
-    var withSimplifiedAttributes = fixNewlines.replace(/=""/g, '');
+  // Remove empty =""s
+  var withSimplifiedAttributes = fixNewlines.replace(/=""/g, '');
 
-    return withSimplifiedAttributes;
+  return withSimplifiedAttributes;
 };

lib/ecmarkdown.js

@@ -1,11 +1,14 @@
 'use strict';
-var parser = require('./generated-parser.js');
+
 var escapeHtml = require('escape-html');
+var beautify = require('./beautify.js');
+var Emitter = require('./emitter.js');
+var parse = require('./parser');
 
-exports.list = function (ecmarkdown) {
-    return parser.parse(ecmarkdown.trim() + '\n', { startRule: 'list' });
+exports.document = function (ecmarkdown) {
+  return beautify(Emitter.document(parse(ecmarkdown)));
 };
 
 exports.fragment = function (ecmarkdown) {
-    return parser.parse(escapeHtml(ecmarkdown.trim()), { startRule: 'fragment' });
+  return beautify(Emitter.fragment(parse(escapeHtml(ecmarkdown))));
 };

lib/emitter.js

@@ -0,0 +1,71 @@
+'use strict';
+
+exports.document = function (doc) {
+  return doc.map(emit).join('');
+};
+
+exports.fragment = function (doc) {
+  if (doc.length === 0) {
+    return '';
+  }
+
+  return doc[0].contents.map(emit).join('');
+};
+
+function emit(node) {
+  var str = '';
+
+  if (node.name === 'list') {
+    if (node.start === '1') {
+      str += '<ol>';
+    } else {
+      str += '<ol start="' + node.start + '">';
+    }
+    str += node.contents.map(function (item) {
+      return '<li>' + item.contents.map(emit).join('') + '</li>';
+    }).join('');
+    str += '</ol>';
+  } else if (node.name === 'chars') {
+    // trim any trailing line breaks and indents
+    str += node.contents.replace(/\n+\s*$/, '');
+  } else if (node.name === 'pipe') {
+    str += '<emu-nt';
+
+    if (node.params) {
+      str += ' params="' + node.params + '"';
+    }
+
+    if (node.optional) {
+      str += ' optional';
+    }
+
+    str += '>' + node.nonTerminal + '</emu-nt>';
+  } else if (node.name === 'non-list') {
+    str += '<p>';
+    str += node.contents.map(function (item) {
+      return emit(item);
+    }).join('');
+    str += '</p>';
+  } else if (node.name === 'comment' || node.name === 'tag') {
+    str += node.contents;
+  } else {
+    str += wrap(node);
+  }
+
+  return str;
+}
+
+var wrappers = {
+  star: 'emu-val',
+  underscore: 'var',
+  tick: 'code',
+  string: 'code',
+  tilde: 'emu-const'
+};
+
+function wrap(atom) {
+  var wrapping = wrappers[atom.name];
+
+  return '<' + wrapping + '>' + atom.contents.map(emit).join('') + '</' + wrapping + '>';
+}
+