Start of parsing of mediawiki text.

grammars/mediawiki.js

@@ -9,7 +9,7 @@ var mediawiki = {
   'hr': [rr.StartOfLine(), rr.Literal('----'), rr.EndOfLine()],
   'i': [rr.Literal("''"), rr.Ref('wikichunk'), rr.Literal("''")],
   'nowiki': [rr.Literal('<nowiki>'), rr.MultiLineText(), rr.Literal('</nowiki>')],
-  'nowikiword': [rr.WordText(), rr.Literal('<nowiki/>')],
+  'text': [rr.MultiLineText()],
   'wikichunk': [rr.Or(
       'b',
       'del',
@@ -21,8 +21,7 @@ var mediawiki = {
       'hr',
       'i',
       'nowiki',
-      'nowikiword',
-      rr.MultiLineText()
+      'text'
    )],
   'wikidoc': [rr.ZeroOrMore('wikichunk')],
 };

recentrunes.js

@@ -1,5 +1,7 @@
 var rr = {};
 
+
+
 rr.Literal_ = function(value) {
   this.value_ = value;
 };
@@ -28,10 +30,19 @@ rr.Literal = function(value) {
 rr.Literal.cache = {};
 
 
+
 rr.Ref_ = function(key) {
   this.key_ = key;
 };
 
+rr.Ref_.prototype.minimize = function(parser) {
+  return parser.minimize(this.key_);
+};
+
+rr.Ref_.prototype.match = function(input, fullInput, inputIndex, parser) {
+  return parser.parse(this.key_, input);
+};
+
 rr.Ref = function(key) {
   return (rr.Ref.cache[key] ||
           (rr.Ref.cache[key] = new rr.Ref_(key)));
@@ -39,19 +50,74 @@ rr.Ref = function(key) {
 rr.Ref.cache = {};
 
 
+
 rr.EndOfLine_ = function() {
 };
 
+rr.EndOfLine_.prototype.match = function(input, fullInput, inputIndex) {
+  if (input.length == 0) {
+    return [0, null];
+  }
+  if (input[0] == '\n') {
+    return [1, null];
+  }
+  if (inputIndex > 0 && fullInput[inputIndex - 1] == '\n') {
+    return [0, null];
+  }
+  return null;
+};
+
+rr.EndOfLine_.prototype.search = function(input, fullInput, inputIndex) {
+  if (input.length == 0) {
+    return 0;
+  }
+  var loc = input.indexOf('\n');
+  if (loc == -1) {
+    return input.length;
+  } else {
+    return loc;
+  }
+};
+
 rr.EndOfLine = function() {
   return rr.EndOfLine.cache;
-}
+};
 rr.EndOfLine.cache = new rr.EndOfLine_();
 
 
+
+rr.EndOfText_ = function() {
+};
+
+rr.EndOfText_.prototype.match = function(input) {
+  if (input.length) {
+    return null;
+  } else {
+    return [0, null];
+  }
+};
+
+rr.EndOfText_.prototype.search = function(input) {
+  return input.length;
+};
+
+rr.EndOfText = function() {
+  return rr.EndOfText.cache;
+};
+rr.EndOfText.cache = new rr.EndOfText_();
+
+
+
 rr.MultiLineText_ = function() {
 };
 
-rr.MultiLineText_.prototype.minimize = true;
+rr.MultiLineText_.prototype.minimize = function() {
+  return true;
+};
+
+rr.MultiLineText_.prototype.match = function(input) {
+  return [input.length, document.createTextNode(input)];
+};
 
 rr.MultiLineText = function() {
   return rr.MultiLineText.cache;
@@ -59,19 +125,44 @@ rr.MultiLineText = function() {
 rr.MultiLineText.cache = new rr.MultiLineText_();
 
 
+
 rr.Or_ = function(options) {
   this.options_ = options;
 };
 
+rr.Or_.prototype.minimize = function(parser) {
+  for (var i = 0; i < this.options_.length; i++) {
+    var option = this.options_[i];
+    if (parser.minimize(option)) {
+      return true;
+    };
+  }
+  return false;
+};
+
+rr.Or_.prototype.match = function(input, fullInput, inputIndex, parser) {
+  for (var i = 0; i < this.options_.length; i++) {
+    var option = this.options_[i];
+    var result = parser.parse(option, input);
+    if (result) {
+      return result;
+    }
+  }
+  return null;
+};
+
 rr.Or = function() {
   return new rr.Or_(arguments);
 };
 
 
+
 rr.SingleLineText_ = function() {
 };
 
-rr.SingleLineText_.prototype.minimize = true;
+rr.SingleLineText_.prototype.minimize = function() {
+  return true;
+}
 
 rr.SingleLineText_.prototype.match = function(input) {
   var newLine = input.indexOf('\n');
@@ -88,30 +179,65 @@ rr.SingleLineText = function() {
 rr.SingleLineText.cache = new rr.SingleLineText_();
 
 
+
 rr.StartOfLine_ = function() {
 };
 
+rr.StartOfLine_.prototype.match = function(input, fullInput, inputIndex) {
+  if (inputIndex == 0) {
+    return [0, null];
+  }
+  if (input[0] == '\n') {
+    return [1, null];
+  }
+  if (fullInput[inputIndex - 1] == '\n') {
+    return [0, null];
+  }
+  return null;
+};
+
+rr.StartOfLine_.prototype.search = function(input, fullInput, inputIndex) {
+  if (inputIndex == 0) {
+    return 0;
+  }
+  var loc = input.indexOf('\n');
+  if (loc == -1) {
+    return null;
+  }
+  return loc + 1;
+};
+
 rr.StartOfLine = function() {
   return rr.StartOfLine.cache;
 };
 rr.StartOfLine.cache = new rr.StartOfLine_();
 
 
-rr.WordText_ = function() {
-};
-
-rr.WordText_.prototype.minimize = true;
-
-rr.WordText = function() {
-  return rr.WordText.cache;
-};
-rr.WordText.cache = new rr.WordText_();
-
 
 rr.ZeroOrMore_ = function(key) {
   this.key_ = key;
 };
 
+rr.ZeroOrMore_.prototype.minimize = function(parser) {
+  return parser.minimize(this.key_);
+};
+
+rr.ZeroOrMore_.prototype.match = function(input, fullInput, inputIndex, parser) {
+  var ret = document.createElement('group');
+  var parseIndex = 0;
+  while (parseIndex < input.length - 1) {
+    var result = parser.parse(this.key_, input.slice(parseIndex));
+    if (!result) {
+      break;
+    }
+    parseIndex += result[0];
+    if (result[1]) {
+      ret.appendChild(result[1]);
+    }
+  };
+  return [parseIndex, ret];
+};
+
 rr.ZeroOrMore = function(key) {
   return (rr.ZeroOrMore.cache[key] ||
           (rr.ZeroOrMore.cache[key] = new rr.ZeroOrMore_(key)));
@@ -119,10 +245,21 @@ rr.ZeroOrMore = function(key) {
 rr.ZeroOrMore.cache = {};
 
 
+
 var RecentRunes = function(dictionary) {
   this.dictionary_ = dictionary;
 };
 
+RecentRunes.prototype.minimize = function(nodeType) {
+  var rules = this.dictionary_[nodeType];
+  for (var i = 0; i < rules.length; i++) {
+    if (rules.minimize && rules.minimize(this)) {
+      return true;
+    }
+  }
+  return false;
+};
+
 RecentRunes.prototype.parse = function(nodeType, input) {
   var ret = document.createElement(nodeType);
   var rules = this.dictionary_[nodeType];
@@ -130,12 +267,12 @@ RecentRunes.prototype.parse = function(nodeType, input) {
   var lastRuleMinimize = false;
   for (var i = 0; i < rules.length; i++) {
     var rule = rules[i];
-    if (rule.minimize) {
+    if (rule.minimize && rule.minimize(this)) {
       if (lastRuleMinimize) {
         // Two minimize rules in a row is ambiguous
         return null;
       }
-      lastRuleMinimize = true;
+      lastRuleMinimize = rule;
       continue;
     }
     if (lastRuleMinimize) {
@@ -146,17 +283,21 @@ RecentRunes.prototype.parse = function(nodeType, input) {
       }
 
       // Check if the previous rule will match the interim data
-      var prevMatch = rules[i - 1].match(
-          input.slice(inputIndex, inputIndex + loc));
-      if (!prevMatch) {
+      var prevMatch = lastRuleMinimize.match(
+          input.slice(inputIndex, inputIndex + loc),
+          input, inputIndex, this);
+      if (!prevMatch || prevMatch[0] != loc) {
         return null;
       };
       inputIndex += prevMatch[0];
       if (prevMatch[1]) {
         ret.appendChild(prevMatch[1]);
       }
+
+      lastRuleMinimize = false;
     }
-    var match = rule.match(input.slice(inputIndex));
+    var match = rule.match(
+        input.slice(inputIndex), input, inputIndex, this);
     if (!match) {
       return null;
     }
@@ -165,5 +306,18 @@ RecentRunes.prototype.parse = function(nodeType, input) {
       ret.appendChild(match[1]);
     }
   };
+
+  if (lastRuleMinimize) {
+    var lastMatch = lastRuleMinimize.match(
+        input.slice(inputIndex), input, inputIndex, this);
+    if (!lastMatch || lastMatch[0] != input.length - inputIndex) {
+      return null;
+    }
+    inputIndex += lastMatch[0];
+    if (lastMatch[1]) {
+      ret.appendChild(lastMatch[1]);
+    }
+  }
+
   return [inputIndex, ret];
 };

test.js

@@ -1,10 +1,11 @@
 test('Simple', function() {
   expect(0);
-  var grammar = {
-    'rule1': [rr.Literal('=== '), rr.SingleLineText(), rr.Literal(' ===')],
-    'rule2': [rr.SingleLineText(), rr.Literal('=')],
-  };
-  var parser = new RecentRunes(grammar);
-  console.log(parser.parse('rule1', '=== bar ==='));
-  console.log(parser.parse('rule2', 'foo=\nbar='));
+  var parser = new RecentRunes(mediawiki);
+  var result = parser.parse('wikidoc',
+'=== Heading ===\n\
+This is a wiki doc.\n\
+How about some <b>bold and <i>bold italic</i></b>.\n\
+I would also love some <nowiki>nowiki <b>foo</b></nowiki>');
+  console.log(result);
+  document.body.appendChild(result[1]);
 });