diff --git a/lib/parser.js b/lib/parser.js
index 160e21f..45d0e70 100644
--- a/lib/parser.js
+++ b/lib/parser.js
@@ -205,50 +205,42 @@ module.exports = (function() {
         peg$c79 = { type: "literal", value: "*/", description: "\"*/\"" },
         peg$c80 = "//",
         peg$c81 = { type: "literal", value: "//", description: "\"//\"" },
-        peg$c82 = { type: "other", description: "action" },
-        peg$c83 = function(braced) { return braced.substr(1, braced.length - 2); },
-        peg$c84 = "{",
-        peg$c85 = { type: "literal", value: "{", description: "\"{\"" },
-        peg$c86 = "}",
-        peg$c87 = { type: "literal", value: "}", description: "\"}\"" },
-        peg$c88 = /^[^{}]/,
-        peg$c89 = { type: "class", value: "[^{}]", description: "[^{}]" },
-        peg$c90 = function(name) { return name; },
-        peg$c91 = function(name) {
+        peg$c82 = function(name) { return name; },
+        peg$c83 = function(name) {
               error("Reserved word \"" + name + "\" can't be used as an identifier.");
             },
-        peg$c92 = { type: "other", description: "identifier" },
-        peg$c93 = function(first, rest) { return first + rest.join(""); },
-        peg$c94 = "_",
-        peg$c95 = { type: "literal", value: "_", description: "\"_\"" },
-        peg$c96 = "\\",
-        peg$c97 = { type: "literal", value: "\\", description: "\"\\\\\"" },
-        peg$c98 = function(sequence) { return sequence; },
-        peg$c99 = "\u200C",
-        peg$c100 = { type: "literal", value: "\u200C", description: "\"\\u200C\"" },
-        peg$c101 = "\u200D",
-        peg$c102 = { type: "literal", value: "\u200D", description: "\"\\u200D\"" },
-        peg$c103 = { type: "other", description: "literal" },
-        peg$c104 = "i",
-        peg$c105 = { type: "literal", value: "i", description: "\"i\"" },
-        peg$c106 = function(value, ignoreCase) {
+        peg$c84 = { type: "other", description: "identifier" },
+        peg$c85 = function(first, rest) { return first + rest.join(""); },
+        peg$c86 = "_",
+        peg$c87 = { type: "literal", value: "_", description: "\"_\"" },
+        peg$c88 = "\\",
+        peg$c89 = { type: "literal", value: "\\", description: "\"\\\\\"" },
+        peg$c90 = function(sequence) { return sequence; },
+        peg$c91 = "\u200C",
+        peg$c92 = { type: "literal", value: "\u200C", description: "\"\\u200C\"" },
+        peg$c93 = "\u200D",
+        peg$c94 = { type: "literal", value: "\u200D", description: "\"\\u200D\"" },
+        peg$c95 = { type: "other", description: "literal" },
+        peg$c96 = "i",
+        peg$c97 = { type: "literal", value: "i", description: "\"i\"" },
+        peg$c98 = function(value, ignoreCase) {
               return { type: "literal", value: value, ignoreCase: ignoreCase !== null };
             },
-        peg$c107 = { type: "other", description: "string" },
-        peg$c108 = "\"",
-        peg$c109 = { type: "literal", value: "\"", description: "\"\\\"\"" },
-        peg$c110 = function(chars) { return chars.join(""); },
-        peg$c111 = "'",
-        peg$c112 = { type: "literal", value: "'", description: "\"'\"" },
-        peg$c113 = function() { return text(); },
-        peg$c114 = { type: "other", description: "character class" },
-        peg$c115 = "[",
-        peg$c116 = { type: "literal", value: "[", description: "\"[\"" },
-        peg$c117 = "^",
-        peg$c118 = { type: "literal", value: "^", description: "\"^\"" },
-        peg$c119 = "]",
-        peg$c120 = { type: "literal", value: "]", description: "\"]\"" },
-        peg$c121 = function(inverted, parts, ignoreCase) {
+        peg$c99 = { type: "other", description: "string" },
+        peg$c100 = "\"",
+        peg$c101 = { type: "literal", value: "\"", description: "\"\\\"\"" },
+        peg$c102 = function(chars) { return chars.join(""); },
+        peg$c103 = "'",
+        peg$c104 = { type: "literal", value: "'", description: "\"'\"" },
+        peg$c105 = function() { return text(); },
+        peg$c106 = { type: "other", description: "character class" },
+        peg$c107 = "[",
+        peg$c108 = { type: "literal", value: "[", description: "\"[\"" },
+        peg$c109 = "^",
+        peg$c110 = { type: "literal", value: "^", description: "\"^\"" },
+        peg$c111 = "]",
+        peg$c112 = { type: "literal", value: "]", description: "\"]\"" },
+        peg$c113 = function(inverted, parts, ignoreCase) {
               return {
                 type:       "class",
                 parts:      parts,
@@ -257,9 +249,9 @@ module.exports = (function() {
                 rawText:    text()
               };
             },
-        peg$c122 = "-",
-        peg$c123 = { type: "literal", value: "-", description: "\"-\"" },
-        peg$c124 = function(begin, end) {
+        peg$c114 = "-",
+        peg$c115 = { type: "literal", value: "-", description: "\"-\"" },
+        peg$c116 = function(begin, end) {
               if (begin.charCodeAt(0) > end.charCodeAt(0)) {
                 error(
                   "Invalid character range: " + text() + "."
@@ -268,39 +260,47 @@ module.exports = (function() {
 
               return [begin, end];
             },
-        peg$c125 = function() { return ""; },
-        peg$c126 = "0",
-        peg$c127 = { type: "literal", value: "0", description: "\"0\"" },
-        peg$c128 = function() { return "\0"; },
-        peg$c129 = "b",
-        peg$c130 = { type: "literal", value: "b", description: "\"b\"" },
-        peg$c131 = function() { return "\b";   },
-        peg$c132 = "f",
-        peg$c133 = { type: "literal", value: "f", description: "\"f\"" },
-        peg$c134 = function() { return "\f";   },
-        peg$c135 = "n",
-        peg$c136 = { type: "literal", value: "n", description: "\"n\"" },
-        peg$c137 = function() { return "\n";   },
-        peg$c138 = "r",
-        peg$c139 = { type: "literal", value: "r", description: "\"r\"" },
-        peg$c140 = function() { return "\r";   },
-        peg$c141 = "t",
-        peg$c142 = { type: "literal", value: "t", description: "\"t\"" },
-        peg$c143 = function() { return "\t";   },
-        peg$c144 = "v",
-        peg$c145 = { type: "literal", value: "v", description: "\"v\"" },
-        peg$c146 = function() { return "\x0B"; },
-        peg$c147 = "x",
-        peg$c148 = { type: "literal", value: "x", description: "\"x\"" },
-        peg$c149 = "u",
-        peg$c150 = { type: "literal", value: "u", description: "\"u\"" },
-        peg$c151 = function(digits) {
+        peg$c117 = function() { return ""; },
+        peg$c118 = "0",
+        peg$c119 = { type: "literal", value: "0", description: "\"0\"" },
+        peg$c120 = function() { return "\0"; },
+        peg$c121 = "b",
+        peg$c122 = { type: "literal", value: "b", description: "\"b\"" },
+        peg$c123 = function() { return "\b";   },
+        peg$c124 = "f",
+        peg$c125 = { type: "literal", value: "f", description: "\"f\"" },
+        peg$c126 = function() { return "\f";   },
+        peg$c127 = "n",
+        peg$c128 = { type: "literal", value: "n", description: "\"n\"" },
+        peg$c129 = function() { return "\n";   },
+        peg$c130 = "r",
+        peg$c131 = { type: "literal", value: "r", description: "\"r\"" },
+        peg$c132 = function() { return "\r";   },
+        peg$c133 = "t",
+        peg$c134 = { type: "literal", value: "t", description: "\"t\"" },
+        peg$c135 = function() { return "\t";   },
+        peg$c136 = "v",
+        peg$c137 = { type: "literal", value: "v", description: "\"v\"" },
+        peg$c138 = function() { return "\x0B"; },
+        peg$c139 = "x",
+        peg$c140 = { type: "literal", value: "x", description: "\"x\"" },
+        peg$c141 = "u",
+        peg$c142 = { type: "literal", value: "u", description: "\"u\"" },
+        peg$c143 = function(digits) {
               return String.fromCharCode(parseInt(digits, 16));
             },
-        peg$c152 = /^[0-9]/,
-        peg$c153 = { type: "class", value: "[0-9]", description: "[0-9]" },
-        peg$c154 = /^[0-9a-f]/i,
-        peg$c155 = { type: "class", value: "[0-9a-f]i", description: "[0-9a-f]i" },
+        peg$c144 = /^[0-9]/,
+        peg$c145 = { type: "class", value: "[0-9]", description: "[0-9]" },
+        peg$c146 = /^[0-9a-f]/i,
+        peg$c147 = { type: "class", value: "[0-9a-f]i", description: "[0-9a-f]i" },
+        peg$c148 = { type: "other", description: "code block" },
+        peg$c149 = "{",
+        peg$c150 = { type: "literal", value: "{", description: "\"{\"" },
+        peg$c151 = "}",
+        peg$c152 = { type: "literal", value: "}", description: "\"}\"" },
+        peg$c153 = function(code) { return code; },
+        peg$c154 = /^[^{}]/,
+        peg$c155 = { type: "class", value: "[^{}]", description: "[^{}]" },
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         peg$c157 = { type: "class", value: 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description: "[\\u0061-\\u007A\\u00B5\\u00DF-\\u00F6\\u00F8-\\u00FF\\u0101\\u0103\\u0105\\u0107\\u0109\\u010B\\u010D\\u010F\\u0111\\u0113\\u0115\\u0117\\u0119\\u011B\\u011D\\u011F\\u0121\\u0123\\u0125\\u0127\\u0129\\u012B\\u012D\\u012F\\u0131\\u0133\\u0135\\u0137-\\u0138\\u013A\\u013C\\u013E\\u0140\\u0142\\u0144\\u0146\\u0148-\\u0149\\u014B\\u014D\\u014F\\u0151\\u0153\\u0155\\u0157\\u0159\\u015B\\u015D\\u015F\\u0161\\u0163\\u0165\\u0167\\u0169\\u016B\\u016D\\u016F\\u0171\\u0173\\u0175\\u0177\\u017A\\u017C\\u017E-\\u0180\\u0183\\u0185\\u0188\\u018C-\\u018D\\u0192\\u0195\\u0199-\\u019B\\u019E\\u01A1\\u01A3\\u01A5\\u01A8\\u01AA-\\u01AB\\u01AD\\u01B0\\u01B4\\u01B6\\u01B9-\\u01BA\\u01BD-\\u01BF\\u01C6\\u01C9\\u01CC\\u01CE\\u01D0\\u01D2\\u01D4\\u01D6\\u01D8\\u01DA\\u01DC-\\u01DD\\u01DF\\u01E1\\u01E3\\u01E5\\u01E7\\u01E9\\u01EB\\u01ED\\u01EF-\\u01F0\\u01F3\\u01F5\\u01F9\\u01FB\\u01FD\\u01FF\\u0201\\u0203\\u0205\\u0207\\u0209\\u020B\\u020D\\u020F\\u0211\\u0213\\u0215\\u0217\\u0219\\u021B\\u021D\\u021F\\u0221\\u0223\\u0225\\u0227\\u0229\\u022B\\u022D\\u022F\\u0231\\u0233-\\u0239\\u023C\\u023F-\\u0240\\u0242\\u0247\\u0249\\u024B\\u024D\\u024F-\\u0293\\u0295-\\u02AF\\u0371\\u0373\\u0377\\u037B-\\u037D\\u0390\\u03AC-\\u03CE\\u03D0-\\u03D1\\u03D5-\\u03D7\\u03D9\\u03DB\\u03DD\\u03DF\\u03E1\\u03E3\\u03E5\\u03E7\\u03E9\\u03EB\\u03ED\\u03EF-\\u03F3\\u03F5\\u03F8\\u03FB-\\u03FC\\u0430-\\u045F\\u0461\\u0463\\u0465\\u0467\\u0469\\u046B\\u046D\\u046F\\u0471\\u0473\\u0475\\u0477\\u0479\\u047B\\u047D\\u047F\\u0481\\u048B\\u048D\\u048F\\u0491\\u0493\\u0495\\u0497\\u0499\\u049B\\u049D\\u049F\\u04A1\\u04A3\\u04A5\\u04A7\\u04A9\\u04AB\\u04AD\\u04AF\\u04B1\\u04B3\\u04B5\\u04B7\\u04B9\\u04BB\\u04BD\\u04BF\\u04C2\\u04C4\\u04C6\\u04C8\\u04CA\\u04CC\\u04CE-\\u04CF\\u04D1\\u04D3\\u04D5\\u04D7\\u04D9\\u04DB\\u04DD\\u04DF\\u04E1\\u04E3\\u04E5\\u04E7\\u04E9\\u04EB\\u04ED\\u04EF\\u04F1\\u04F3\\u04F5\\u04F7\\u04F9\\u04FB\\u04FD\\u04FF\\u0501\\u0503\\u0505\\u0507\\u0509\\u050B\\u050D\\u050F\\u0511\\u0513\\u0515\\u0517\\u0519\\u051B\\u051D\\u051F\\u0521\\u0523\\u0525\\u0527\\u0561-\\u0587\\u1D00-\\u1D2B\\u1D6B-\\u1D77\\u1D79-\\u1D9A\\u1E01\\u1E03\\u1E05\\u1E07\\u1E09\\u1E0B\\u1E0D\\u1E0F\\u1E11\\u1E13\\u1E15\\u1E17\\u1E19\\u1E1B\\u1E1D\\u1E1F\\u1E21\\u1E23\\u1E25\\u1E27\\u1E29\\u1E2B\\u1E2D\\u1E2F\\u1E31\\u1E33\\u1E35\\u1E37\\u1E39\\u1E3B\\u1E3D\\u1E3F\\u1E41\\u1E43\\u1E45\\u1E47\\u1E49\\u1E4B\\u1E4D\\u1E4F\\u1E51\\u1E53\\u1E55\\u1E57\\u1E59\\u1E5B\\u1E5D\\u1E5F\\u1E61\\u1E63\\u1E65\\u1E67\\u1E69\\u1E6B\\u1E6D\\u1E6F\\u1E71\\u1E73\\u1E75\\u1E77\\u1E79\\u1E7B\\u1E7D\\u1E7F\\u1E81\\u1E83\\u1E85\\u1E87\\u1E89\\u1E8B\\u1E8D\\u1E8F\\u1E91\\u1E93\\u1E95-\\u1E9D\\u1E9F\\u1EA1\\u1EA3\\u1EA5\\u1EA7\\u1EA9\\u1EAB\\u1EAD\\u1EAF\\u1EB1\\u1EB3\\u1EB5\\u1EB7\\u1EB9\\u1EBB\\u1EBD\\u1EBF\\u1EC1\\u1EC3\\u1EC5\\u1EC7\\u1EC9\\u1ECB\\u1ECD\\u1ECF\\u1ED1\\u1ED3\\u1ED5\\u1ED7\\u1ED9\\u1EDB\\u1EDD\\u1EDF\\u1EE1\\u1EE3\\u1EE5\\u1EE7\\u1EE9\\u1EEB\\u1EED\\u1EEF\\u1EF1\\u1EF3\\u1EF5\\u1EF7\\u1EF9\\u1EFB\\u1EFD\\u1EFF-\\u1F07\\u1F10-\\u1F15\\u1F20-\\u1F27\\u1F30-\\u1F37\\u1F40-\\u1F45\\u1F50-\\u1F57\\u1F60-\\u1F67\\u1F70-\\u1F7D\\u1F80-\\u1F87\\u1F90-\\u1F97\\u1FA0-\\u1FA7\\u1FB0-\\u1FB4\\u1FB6-\\u1FB7\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FC7\\u1FD0-\\u1FD3\\u1FD6-\\u1FD7\\u1FE0-\\u1FE7\\u1FF2-\\u1FF4\\u1FF6-\\u1FF7\\u210A\\u210E-\\u210F\\u2113\\u212F\\u2134\\u2139\\u213C-\\u213D\\u2146-\\u2149\\u214E\\u2184\\u2C30-\\u2C5E\\u2C61\\u2C65-\\u2C66\\u2C68\\u2C6A\\u2C6C\\u2C71\\u2C73-\\u2C74\\u2C76-\\u2C7B\\u2C81\\u2C83\\u2C85\\u2C87\\u2C89\\u2C8B\\u2C8D\\u2C8F\\u2C91\\u2C93\\u2C95\\u2C97\\u2C99\\u2C9B\\u2C9D\\u2C9F\\u2CA1\\u2CA3\\u2CA5\\u2CA7\\u2CA9\\u2CAB\\u2CAD\\u2CAF\\u2CB1\\u2CB3\\u2CB5\\u2CB7\\u2CB9\\u2CBB\\u2CBD\\u2CBF\\u2CC1\\u2CC3\\u2CC5\\u2CC7\\u2CC9\\u2CCB\\u2CCD\\u2CCF\\u2CD1\\u2CD3\\u2CD5\\u2CD7\\u2CD9\\u2CDB\\u2CDD\\u2CDF\\u2CE1\\u2CE3-\\u2CE4\\u2CEC\\u2CEE\\u2CF3\\u2D00-\\u2D25\\u2D27\\u2D2D\\uA641\\uA643\\uA645\\uA647\\uA649\\uA64B\\uA64D\\uA64F\\uA651\\uA653\\uA655\\uA657\\uA659\\uA65B\\uA65D\\uA65F\\uA661\\uA663\\uA665\\uA667\\uA669\\uA66B\\uA66D\\uA681\\uA683\\uA685\\uA687\\uA689\\uA68B\\uA68D\\uA68F\\uA691\\uA693\\uA695\\uA697\\uA723\\uA725\\uA727\\uA729\\uA72B\\uA72D\\uA72F-\\uA731\\uA733\\uA735\\uA737\\uA739\\uA73B\\uA73D\\uA73F\\uA741\\uA743\\uA745\\uA747\\uA749\\uA74B\\uA74D\\uA74F\\uA751\\uA753\\uA755\\uA757\\uA759\\uA75B\\uA75D\\uA75F\\uA761\\uA763\\uA765\\uA767\\uA769\\uA76B\\uA76D\\uA76F\\uA771-\\uA778\\uA77A\\uA77C\\uA77F\\uA781\\uA783\\uA785\\uA787\\uA78C\\uA78E\\uA791\\uA793\\uA7A1\\uA7A3\\uA7A5\\uA7A7\\uA7A9\\uA7FA\\uFB00-\\uFB06\\uFB13-\\uFB17\\uFF41-\\uFF5A]" },
         peg$c158 = /^[\u02B0-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0374\u037A\u0559\u0640\u06E5-\u06E6\u07F4-\u07F5\u07FA\u081A\u0824\u0828\u0971\u0E46\u0EC6\u10FC\u17D7\u1843\u1AA7\u1C78-\u1C7D\u1D2C-\u1D6A\u1D78\u1D9B-\u1DBF\u2071\u207F\u2090-\u209C\u2C7C-\u2C7D\u2D6F\u2E2F\u3005\u3031-\u3035\u303B\u309D-\u309E\u30FC-\u30FE\uA015\uA4F8-\uA4FD\uA60C\uA67F\uA717-\uA71F\uA770\uA788\uA7F8-\uA7F9\uA9CF\uAA70\uAADD\uAAF3-\uAAF4\uFF70\uFF9E-\uFF9F]/,
@@ -649,7 +649,7 @@ module.exports = (function() {
       var s0, s1, s2, s3, s4;
 
       s0 = peg$currPos;
-      s1 = peg$parseAction();
+      s1 = peg$parseCodeBlock();
       if (s1 !== peg$FAILED) {
         s2 = peg$currPos;
         s3 = peg$parse__();
@@ -925,7 +925,7 @@ module.exports = (function() {
         if (s2 !== peg$FAILED) {
           s3 = peg$parse__();
           if (s3 !== peg$FAILED) {
-            s4 = peg$parseAction();
+            s4 = peg$parseCodeBlock();
             if (s4 !== peg$FAILED) {
               peg$reportedPos = s0;
               s1 = peg$c13(s1, s2, s4);
@@ -1094,7 +1094,7 @@ module.exports = (function() {
         if (s1 !== peg$FAILED) {
           s2 = peg$parse__();
           if (s2 !== peg$FAILED) {
-            s3 = peg$parseAction();
+            s3 = peg$parseCodeBlock();
             if (s3 !== peg$FAILED) {
               peg$reportedPos = s0;
               s1 = peg$c23(s3);
@@ -1152,7 +1152,7 @@ module.exports = (function() {
             if (s1 !== peg$FAILED) {
               s2 = peg$parse__();
               if (s2 !== peg$FAILED) {
-                s3 = peg$parseAction();
+                s3 = peg$parseCodeBlock();
                 if (s3 !== peg$FAILED) {
                   peg$reportedPos = s0;
                   s1 = peg$c27(s3);
@@ -1802,122 +1802,6 @@ module.exports = (function() {
       return s0;
     }
 
-    function peg$parseAction() {
-      var s0, s1, s2;
-
-      peg$silentFails++;
-      s0 = peg$currPos;
-      s1 = peg$parseBraced();
-      if (s1 !== peg$FAILED) {
-        s2 = peg$parse__();
-        if (s2 !== peg$FAILED) {
-          peg$reportedPos = s0;
-          s1 = peg$c83(s1);
-          s0 = s1;
-        } else {
-          peg$currPos = s0;
-          s0 = peg$c0;
-        }
-      } else {
-        peg$currPos = s0;
-        s0 = peg$c0;
-      }
-      peg$silentFails--;
-      if (s0 === peg$FAILED) {
-        s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c82); }
-      }
-
-      return s0;
-    }
-
-    function peg$parseBraced() {
-      var s0, s1, s2, s3, s4;
-
-      s0 = peg$currPos;
-      s1 = peg$currPos;
-      if (input.charCodeAt(peg$currPos) === 123) {
-        s2 = peg$c84;
-        peg$currPos++;
-      } else {
-        s2 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c85); }
-      }
-      if (s2 !== peg$FAILED) {
-        s3 = [];
-        s4 = peg$parseBraced();
-        if (s4 === peg$FAILED) {
-          s4 = peg$parseNonBraceCharacters();
-        }
-        while (s4 !== peg$FAILED) {
-          s3.push(s4);
-          s4 = peg$parseBraced();
-          if (s4 === peg$FAILED) {
-            s4 = peg$parseNonBraceCharacters();
-          }
-        }
-        if (s3 !== peg$FAILED) {
-          if (input.charCodeAt(peg$currPos) === 125) {
-            s4 = peg$c86;
-            peg$currPos++;
-          } else {
-            s4 = peg$FAILED;
-            if (peg$silentFails === 0) { peg$fail(peg$c87); }
-          }
-          if (s4 !== peg$FAILED) {
-            s2 = [s2, s3, s4];
-            s1 = s2;
-          } else {
-            peg$currPos = s1;
-            s1 = peg$c0;
-          }
-        } else {
-          peg$currPos = s1;
-          s1 = peg$c0;
-        }
-      } else {
-        peg$currPos = s1;
-        s1 = peg$c0;
-      }
-      if (s1 !== peg$FAILED) {
-        s1 = input.substring(s0, peg$currPos);
-      }
-      s0 = s1;
-
-      return s0;
-    }
-
-    function peg$parseNonBraceCharacters() {
-      var s0, s1;
-
-      s0 = [];
-      s1 = peg$parseNonBraceCharacter();
-      if (s1 !== peg$FAILED) {
-        while (s1 !== peg$FAILED) {
-          s0.push(s1);
-          s1 = peg$parseNonBraceCharacter();
-        }
-      } else {
-        s0 = peg$c0;
-      }
-
-      return s0;
-    }
-
-    function peg$parseNonBraceCharacter() {
-      var s0;
-
-      if (peg$c88.test(input.charAt(peg$currPos))) {
-        s0 = input.charAt(peg$currPos);
-        peg$currPos++;
-      } else {
-        s0 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c89); }
-      }
-
-      return s0;
-    }
-
     function peg$parseIdentifier() {
       var s0, s1, s2;
 
@@ -1936,7 +1820,7 @@ module.exports = (function() {
         s2 = peg$parseIdentifierName();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c90(s2);
+          s1 = peg$c82(s2);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -1951,7 +1835,7 @@ module.exports = (function() {
         s1 = peg$parseIdentifierName();
         if (s1 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c91(s1);
+          s1 = peg$c83(s1);
         }
         s0 = s1;
       }
@@ -1974,7 +1858,7 @@ module.exports = (function() {
         }
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c93(s1, s2);
+          s1 = peg$c85(s1, s2);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -1987,7 +1871,7 @@ module.exports = (function() {
       peg$silentFails--;
       if (s0 === peg$FAILED) {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c92); }
+        if (peg$silentFails === 0) { peg$fail(peg$c84); }
       }
 
       return s0;
@@ -2007,26 +1891,26 @@ module.exports = (function() {
         }
         if (s0 === peg$FAILED) {
           if (input.charCodeAt(peg$currPos) === 95) {
-            s0 = peg$c94;
+            s0 = peg$c86;
             peg$currPos++;
           } else {
             s0 = peg$FAILED;
-            if (peg$silentFails === 0) { peg$fail(peg$c95); }
+            if (peg$silentFails === 0) { peg$fail(peg$c87); }
           }
           if (s0 === peg$FAILED) {
             s0 = peg$currPos;
             if (input.charCodeAt(peg$currPos) === 92) {
-              s1 = peg$c96;
+              s1 = peg$c88;
               peg$currPos++;
             } else {
               s1 = peg$FAILED;
-              if (peg$silentFails === 0) { peg$fail(peg$c97); }
+              if (peg$silentFails === 0) { peg$fail(peg$c89); }
             }
             if (s1 !== peg$FAILED) {
               s2 = peg$parseUnicodeEscapeSequence();
               if (s2 !== peg$FAILED) {
                 peg$reportedPos = s0;
-                s1 = peg$c98(s2);
+                s1 = peg$c90(s2);
                 s0 = s1;
               } else {
                 peg$currPos = s0;
@@ -2055,19 +1939,19 @@ module.exports = (function() {
             s0 = peg$parsePc();
             if (s0 === peg$FAILED) {
               if (input.charCodeAt(peg$currPos) === 8204) {
-                s0 = peg$c99;
+                s0 = peg$c91;
                 peg$currPos++;
               } else {
                 s0 = peg$FAILED;
-                if (peg$silentFails === 0) { peg$fail(peg$c100); }
+                if (peg$silentFails === 0) { peg$fail(peg$c92); }
               }
               if (s0 === peg$FAILED) {
                 if (input.charCodeAt(peg$currPos) === 8205) {
-                  s0 = peg$c101;
+                  s0 = peg$c93;
                   peg$currPos++;
                 } else {
                   s0 = peg$FAILED;
-                  if (peg$silentFails === 0) { peg$fail(peg$c102); }
+                  if (peg$silentFails === 0) { peg$fail(peg$c94); }
                 }
               }
             }
@@ -2257,18 +2141,18 @@ module.exports = (function() {
       s1 = peg$parseStringLiteral();
       if (s1 !== peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 105) {
-          s2 = peg$c104;
+          s2 = peg$c96;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c105); }
+          if (peg$silentFails === 0) { peg$fail(peg$c97); }
         }
         if (s2 === peg$FAILED) {
           s2 = peg$c1;
         }
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c106(s1, s2);
+          s1 = peg$c98(s1, s2);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2281,7 +2165,7 @@ module.exports = (function() {
       peg$silentFails--;
       if (s0 === peg$FAILED) {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c103); }
+        if (peg$silentFails === 0) { peg$fail(peg$c95); }
       }
 
       return s0;
@@ -2293,11 +2177,11 @@ module.exports = (function() {
       peg$silentFails++;
       s0 = peg$currPos;
       if (input.charCodeAt(peg$currPos) === 34) {
-        s1 = peg$c108;
+        s1 = peg$c100;
         peg$currPos++;
       } else {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c109); }
+        if (peg$silentFails === 0) { peg$fail(peg$c101); }
       }
       if (s1 !== peg$FAILED) {
         s2 = [];
@@ -2308,15 +2192,15 @@ module.exports = (function() {
         }
         if (s2 !== peg$FAILED) {
           if (input.charCodeAt(peg$currPos) === 34) {
-            s3 = peg$c108;
+            s3 = peg$c100;
             peg$currPos++;
           } else {
             s3 = peg$FAILED;
-            if (peg$silentFails === 0) { peg$fail(peg$c109); }
+            if (peg$silentFails === 0) { peg$fail(peg$c101); }
           }
           if (s3 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c110(s2);
+            s1 = peg$c102(s2);
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2333,11 +2217,11 @@ module.exports = (function() {
       if (s0 === peg$FAILED) {
         s0 = peg$currPos;
         if (input.charCodeAt(peg$currPos) === 39) {
-          s1 = peg$c111;
+          s1 = peg$c103;
           peg$currPos++;
         } else {
           s1 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c112); }
+          if (peg$silentFails === 0) { peg$fail(peg$c104); }
         }
         if (s1 !== peg$FAILED) {
           s2 = [];
@@ -2348,15 +2232,15 @@ module.exports = (function() {
           }
           if (s2 !== peg$FAILED) {
             if (input.charCodeAt(peg$currPos) === 39) {
-              s3 = peg$c111;
+              s3 = peg$c103;
               peg$currPos++;
             } else {
               s3 = peg$FAILED;
-              if (peg$silentFails === 0) { peg$fail(peg$c112); }
+              if (peg$silentFails === 0) { peg$fail(peg$c104); }
             }
             if (s3 !== peg$FAILED) {
               peg$reportedPos = s0;
-              s1 = peg$c110(s2);
+              s1 = peg$c102(s2);
               s0 = s1;
             } else {
               peg$currPos = s0;
@@ -2374,7 +2258,7 @@ module.exports = (function() {
       peg$silentFails--;
       if (s0 === peg$FAILED) {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c107); }
+        if (peg$silentFails === 0) { peg$fail(peg$c99); }
       }
 
       return s0;
@@ -2387,19 +2271,19 @@ module.exports = (function() {
       s1 = peg$currPos;
       peg$silentFails++;
       if (input.charCodeAt(peg$currPos) === 34) {
-        s2 = peg$c108;
+        s2 = peg$c100;
         peg$currPos++;
       } else {
         s2 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c109); }
+        if (peg$silentFails === 0) { peg$fail(peg$c101); }
       }
       if (s2 === peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 92) {
-          s2 = peg$c96;
+          s2 = peg$c88;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s2 === peg$FAILED) {
           s2 = peg$parseLineTerminator();
@@ -2416,7 +2300,7 @@ module.exports = (function() {
         s2 = peg$parseSourceCharacter();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c113();
+          s1 = peg$c105();
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2429,17 +2313,17 @@ module.exports = (function() {
       if (s0 === peg$FAILED) {
         s0 = peg$currPos;
         if (input.charCodeAt(peg$currPos) === 92) {
-          s1 = peg$c96;
+          s1 = peg$c88;
           peg$currPos++;
         } else {
           s1 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s1 !== peg$FAILED) {
           s2 = peg$parseEscapeSequence();
           if (s2 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c98(s2);
+            s1 = peg$c90(s2);
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2464,19 +2348,19 @@ module.exports = (function() {
       s1 = peg$currPos;
       peg$silentFails++;
       if (input.charCodeAt(peg$currPos) === 39) {
-        s2 = peg$c111;
+        s2 = peg$c103;
         peg$currPos++;
       } else {
         s2 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c112); }
+        if (peg$silentFails === 0) { peg$fail(peg$c104); }
       }
       if (s2 === peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 92) {
-          s2 = peg$c96;
+          s2 = peg$c88;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s2 === peg$FAILED) {
           s2 = peg$parseLineTerminator();
@@ -2493,7 +2377,7 @@ module.exports = (function() {
         s2 = peg$parseSourceCharacter();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c113();
+          s1 = peg$c105();
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2506,17 +2390,17 @@ module.exports = (function() {
       if (s0 === peg$FAILED) {
         s0 = peg$currPos;
         if (input.charCodeAt(peg$currPos) === 92) {
-          s1 = peg$c96;
+          s1 = peg$c88;
           peg$currPos++;
         } else {
           s1 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s1 !== peg$FAILED) {
           s2 = peg$parseEscapeSequence();
           if (s2 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c98(s2);
+            s1 = peg$c90(s2);
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2540,19 +2424,19 @@ module.exports = (function() {
       peg$silentFails++;
       s0 = peg$currPos;
       if (input.charCodeAt(peg$currPos) === 91) {
-        s1 = peg$c115;
+        s1 = peg$c107;
         peg$currPos++;
       } else {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c116); }
+        if (peg$silentFails === 0) { peg$fail(peg$c108); }
       }
       if (s1 !== peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 94) {
-          s2 = peg$c117;
+          s2 = peg$c109;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c118); }
+          if (peg$silentFails === 0) { peg$fail(peg$c110); }
         }
         if (s2 === peg$FAILED) {
           s2 = peg$c1;
@@ -2572,26 +2456,26 @@ module.exports = (function() {
           }
           if (s3 !== peg$FAILED) {
             if (input.charCodeAt(peg$currPos) === 93) {
-              s4 = peg$c119;
+              s4 = peg$c111;
               peg$currPos++;
             } else {
               s4 = peg$FAILED;
-              if (peg$silentFails === 0) { peg$fail(peg$c120); }
+              if (peg$silentFails === 0) { peg$fail(peg$c112); }
             }
             if (s4 !== peg$FAILED) {
               if (input.charCodeAt(peg$currPos) === 105) {
-                s5 = peg$c104;
+                s5 = peg$c96;
                 peg$currPos++;
               } else {
                 s5 = peg$FAILED;
-                if (peg$silentFails === 0) { peg$fail(peg$c105); }
+                if (peg$silentFails === 0) { peg$fail(peg$c97); }
               }
               if (s5 === peg$FAILED) {
                 s5 = peg$c1;
               }
               if (s5 !== peg$FAILED) {
                 peg$reportedPos = s0;
-                s1 = peg$c121(s2, s3, s5);
+                s1 = peg$c113(s2, s3, s5);
                 s0 = s1;
               } else {
                 peg$currPos = s0;
@@ -2616,7 +2500,7 @@ module.exports = (function() {
       peg$silentFails--;
       if (s0 === peg$FAILED) {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c114); }
+        if (peg$silentFails === 0) { peg$fail(peg$c106); }
       }
 
       return s0;
@@ -2629,17 +2513,17 @@ module.exports = (function() {
       s1 = peg$parseClassCharacter();
       if (s1 !== peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 45) {
-          s2 = peg$c122;
+          s2 = peg$c114;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c123); }
+          if (peg$silentFails === 0) { peg$fail(peg$c115); }
         }
         if (s2 !== peg$FAILED) {
           s3 = peg$parseClassCharacter();
           if (s3 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c124(s1, s3);
+            s1 = peg$c116(s1, s3);
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2664,19 +2548,19 @@ module.exports = (function() {
       s1 = peg$currPos;
       peg$silentFails++;
       if (input.charCodeAt(peg$currPos) === 93) {
-        s2 = peg$c119;
+        s2 = peg$c111;
         peg$currPos++;
       } else {
         s2 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c120); }
+        if (peg$silentFails === 0) { peg$fail(peg$c112); }
       }
       if (s2 === peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 92) {
-          s2 = peg$c96;
+          s2 = peg$c88;
           peg$currPos++;
         } else {
           s2 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s2 === peg$FAILED) {
           s2 = peg$parseLineTerminator();
@@ -2693,7 +2577,7 @@ module.exports = (function() {
         s2 = peg$parseSourceCharacter();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c113();
+          s1 = peg$c105();
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2706,17 +2590,17 @@ module.exports = (function() {
       if (s0 === peg$FAILED) {
         s0 = peg$currPos;
         if (input.charCodeAt(peg$currPos) === 92) {
-          s1 = peg$c96;
+          s1 = peg$c88;
           peg$currPos++;
         } else {
           s1 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c97); }
+          if (peg$silentFails === 0) { peg$fail(peg$c89); }
         }
         if (s1 !== peg$FAILED) {
           s2 = peg$parseEscapeSequence();
           if (s2 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c98(s2);
+            s1 = peg$c90(s2);
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2739,17 +2623,17 @@ module.exports = (function() {
 
       s0 = peg$currPos;
       if (input.charCodeAt(peg$currPos) === 92) {
-        s1 = peg$c96;
+        s1 = peg$c88;
         peg$currPos++;
       } else {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c97); }
+        if (peg$silentFails === 0) { peg$fail(peg$c89); }
       }
       if (s1 !== peg$FAILED) {
         s2 = peg$parseLineTerminatorSequence();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c125();
+          s1 = peg$c117();
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2770,11 +2654,11 @@ module.exports = (function() {
       if (s0 === peg$FAILED) {
         s0 = peg$currPos;
         if (input.charCodeAt(peg$currPos) === 48) {
-          s1 = peg$c126;
+          s1 = peg$c118;
           peg$currPos++;
         } else {
           s1 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c127); }
+          if (peg$silentFails === 0) { peg$fail(peg$c119); }
         }
         if (s1 !== peg$FAILED) {
           s2 = peg$currPos;
@@ -2789,7 +2673,7 @@ module.exports = (function() {
           }
           if (s2 !== peg$FAILED) {
             peg$reportedPos = s0;
-            s1 = peg$c128();
+            s1 = peg$c120();
             s0 = s1;
           } else {
             peg$currPos = s0;
@@ -2825,110 +2709,110 @@ module.exports = (function() {
       var s0, s1;
 
       if (input.charCodeAt(peg$currPos) === 39) {
-        s0 = peg$c111;
+        s0 = peg$c103;
         peg$currPos++;
       } else {
         s0 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c112); }
+        if (peg$silentFails === 0) { peg$fail(peg$c104); }
       }
       if (s0 === peg$FAILED) {
         if (input.charCodeAt(peg$currPos) === 34) {
-          s0 = peg$c108;
+          s0 = peg$c100;
           peg$currPos++;
         } else {
           s0 = peg$FAILED;
-          if (peg$silentFails === 0) { peg$fail(peg$c109); }
+          if (peg$silentFails === 0) { peg$fail(peg$c101); }
         }
         if (s0 === peg$FAILED) {
           if (input.charCodeAt(peg$currPos) === 92) {
-            s0 = peg$c96;
+            s0 = peg$c88;
             peg$currPos++;
           } else {
             s0 = peg$FAILED;
-            if (peg$silentFails === 0) { peg$fail(peg$c97); }
+            if (peg$silentFails === 0) { peg$fail(peg$c89); }
           }
           if (s0 === peg$FAILED) {
             s0 = peg$currPos;
             if (input.charCodeAt(peg$currPos) === 98) {
-              s1 = peg$c129;
+              s1 = peg$c121;
               peg$currPos++;
             } else {
               s1 = peg$FAILED;
-              if (peg$silentFails === 0) { peg$fail(peg$c130); }
+              if (peg$silentFails === 0) { peg$fail(peg$c122); }
             }
             if (s1 !== peg$FAILED) {
               peg$reportedPos = s0;
-              s1 = peg$c131();
+              s1 = peg$c123();
             }
             s0 = s1;
             if (s0 === peg$FAILED) {
               s0 = peg$currPos;
               if (input.charCodeAt(peg$currPos) === 102) {
-                s1 = peg$c132;
+                s1 = peg$c124;
                 peg$currPos++;
               } else {
                 s1 = peg$FAILED;
-                if (peg$silentFails === 0) { peg$fail(peg$c133); }
+                if (peg$silentFails === 0) { peg$fail(peg$c125); }
               }
               if (s1 !== peg$FAILED) {
                 peg$reportedPos = s0;
-                s1 = peg$c134();
+                s1 = peg$c126();
               }
               s0 = s1;
               if (s0 === peg$FAILED) {
                 s0 = peg$currPos;
                 if (input.charCodeAt(peg$currPos) === 110) {
-                  s1 = peg$c135;
+                  s1 = peg$c127;
                   peg$currPos++;
                 } else {
                   s1 = peg$FAILED;
-                  if (peg$silentFails === 0) { peg$fail(peg$c136); }
+                  if (peg$silentFails === 0) { peg$fail(peg$c128); }
                 }
                 if (s1 !== peg$FAILED) {
                   peg$reportedPos = s0;
-                  s1 = peg$c137();
+                  s1 = peg$c129();
                 }
                 s0 = s1;
                 if (s0 === peg$FAILED) {
                   s0 = peg$currPos;
                   if (input.charCodeAt(peg$currPos) === 114) {
-                    s1 = peg$c138;
+                    s1 = peg$c130;
                     peg$currPos++;
                   } else {
                     s1 = peg$FAILED;
-                    if (peg$silentFails === 0) { peg$fail(peg$c139); }
+                    if (peg$silentFails === 0) { peg$fail(peg$c131); }
                   }
                   if (s1 !== peg$FAILED) {
                     peg$reportedPos = s0;
-                    s1 = peg$c140();
+                    s1 = peg$c132();
                   }
                   s0 = s1;
                   if (s0 === peg$FAILED) {
                     s0 = peg$currPos;
                     if (input.charCodeAt(peg$currPos) === 116) {
-                      s1 = peg$c141;
+                      s1 = peg$c133;
                       peg$currPos++;
                     } else {
                       s1 = peg$FAILED;
-                      if (peg$silentFails === 0) { peg$fail(peg$c142); }
+                      if (peg$silentFails === 0) { peg$fail(peg$c134); }
                     }
                     if (s1 !== peg$FAILED) {
                       peg$reportedPos = s0;
-                      s1 = peg$c143();
+                      s1 = peg$c135();
                     }
                     s0 = s1;
                     if (s0 === peg$FAILED) {
                       s0 = peg$currPos;
                       if (input.charCodeAt(peg$currPos) === 118) {
-                        s1 = peg$c144;
+                        s1 = peg$c136;
                         peg$currPos++;
                       } else {
                         s1 = peg$FAILED;
-                        if (peg$silentFails === 0) { peg$fail(peg$c145); }
+                        if (peg$silentFails === 0) { peg$fail(peg$c137); }
                       }
                       if (s1 !== peg$FAILED) {
                         peg$reportedPos = s0;
-                        s1 = peg$c146();
+                        s1 = peg$c138();
                       }
                       s0 = s1;
                     }
@@ -2964,7 +2848,7 @@ module.exports = (function() {
         s2 = peg$parseSourceCharacter();
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c113();
+          s1 = peg$c105();
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -2986,19 +2870,19 @@ module.exports = (function() {
         s0 = peg$parseDecimalDigit();
         if (s0 === peg$FAILED) {
           if (input.charCodeAt(peg$currPos) === 120) {
-            s0 = peg$c147;
+            s0 = peg$c139;
             peg$currPos++;
           } else {
             s0 = peg$FAILED;
-            if (peg$silentFails === 0) { peg$fail(peg$c148); }
+            if (peg$silentFails === 0) { peg$fail(peg$c140); }
           }
           if (s0 === peg$FAILED) {
             if (input.charCodeAt(peg$currPos) === 117) {
-              s0 = peg$c149;
+              s0 = peg$c141;
               peg$currPos++;
             } else {
               s0 = peg$FAILED;
-              if (peg$silentFails === 0) { peg$fail(peg$c150); }
+              if (peg$silentFails === 0) { peg$fail(peg$c142); }
             }
           }
         }
@@ -3012,11 +2896,11 @@ module.exports = (function() {
 
       s0 = peg$currPos;
       if (input.charCodeAt(peg$currPos) === 120) {
-        s1 = peg$c147;
+        s1 = peg$c139;
         peg$currPos++;
       } else {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c148); }
+        if (peg$silentFails === 0) { peg$fail(peg$c140); }
       }
       if (s1 !== peg$FAILED) {
         s2 = peg$currPos;
@@ -3041,7 +2925,7 @@ module.exports = (function() {
         s2 = s3;
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c151(s2);
+          s1 = peg$c143(s2);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -3060,11 +2944,11 @@ module.exports = (function() {
 
       s0 = peg$currPos;
       if (input.charCodeAt(peg$currPos) === 117) {
-        s1 = peg$c149;
+        s1 = peg$c141;
         peg$currPos++;
       } else {
         s1 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c150); }
+        if (peg$silentFails === 0) { peg$fail(peg$c142); }
       }
       if (s1 !== peg$FAILED) {
         s2 = peg$currPos;
@@ -3101,7 +2985,7 @@ module.exports = (function() {
         s2 = s3;
         if (s2 !== peg$FAILED) {
           peg$reportedPos = s0;
-          s1 = peg$c151(s2);
+          s1 = peg$c143(s2);
           s0 = s1;
         } else {
           peg$currPos = s0;
@@ -3118,12 +3002,12 @@ module.exports = (function() {
     function peg$parseDecimalDigit() {
       var s0;
 
-      if (peg$c152.test(input.charAt(peg$currPos))) {
+      if (peg$c144.test(input.charAt(peg$currPos))) {
         s0 = input.charAt(peg$currPos);
         peg$currPos++;
       } else {
         s0 = peg$FAILED;
-        if (peg$silentFails === 0) { peg$fail(peg$c153); }
+        if (peg$silentFails === 0) { peg$fail(peg$c145); }
       }
 
       return s0;
@@ -3132,13 +3016,160 @@ module.exports = (function() {
     function peg$parseHexDigit() {
       var s0;
 
-      if (peg$c154.test(input.charAt(peg$currPos))) {
+      if (peg$c146.test(input.charAt(peg$currPos))) {
         s0 = input.charAt(peg$currPos);
         peg$currPos++;
       } else {
         s0 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c147); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseCodeBlock() {
+      var s0, s1, s2, s3;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      if (input.charCodeAt(peg$currPos) === 123) {
+        s1 = peg$c149;
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c150); }
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parseCode();
+        if (s2 !== peg$FAILED) {
+          if (input.charCodeAt(peg$currPos) === 125) {
+            s3 = peg$c151;
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c152); }
+          }
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c153(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c0;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c0;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c0;
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c148); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseCode() {
+      var s0, s1, s2, s3, s4, s5;
+
+      s0 = peg$currPos;
+      s1 = [];
+      if (peg$c154.test(input.charAt(peg$currPos))) {
+        s2 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s2 = peg$FAILED;
         if (peg$silentFails === 0) { peg$fail(peg$c155); }
       }
+      if (s2 === peg$FAILED) {
+        s2 = peg$currPos;
+        if (input.charCodeAt(peg$currPos) === 123) {
+          s3 = peg$c149;
+          peg$currPos++;
+        } else {
+          s3 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c150); }
+        }
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parseCode();
+          if (s4 !== peg$FAILED) {
+            if (input.charCodeAt(peg$currPos) === 125) {
+              s5 = peg$c151;
+              peg$currPos++;
+            } else {
+              s5 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c152); }
+            }
+            if (s5 !== peg$FAILED) {
+              s3 = [s3, s4, s5];
+              s2 = s3;
+            } else {
+              peg$currPos = s2;
+              s2 = peg$c0;
+            }
+          } else {
+            peg$currPos = s2;
+            s2 = peg$c0;
+          }
+        } else {
+          peg$currPos = s2;
+          s2 = peg$c0;
+        }
+      }
+      while (s2 !== peg$FAILED) {
+        s1.push(s2);
+        if (peg$c154.test(input.charAt(peg$currPos))) {
+          s2 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s2 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c155); }
+        }
+        if (s2 === peg$FAILED) {
+          s2 = peg$currPos;
+          if (input.charCodeAt(peg$currPos) === 123) {
+            s3 = peg$c149;
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c150); }
+          }
+          if (s3 !== peg$FAILED) {
+            s4 = peg$parseCode();
+            if (s4 !== peg$FAILED) {
+              if (input.charCodeAt(peg$currPos) === 125) {
+                s5 = peg$c151;
+                peg$currPos++;
+              } else {
+                s5 = peg$FAILED;
+                if (peg$silentFails === 0) { peg$fail(peg$c152); }
+              }
+              if (s5 !== peg$FAILED) {
+                s3 = [s3, s4, s5];
+                s2 = s3;
+              } else {
+                peg$currPos = s2;
+                s2 = peg$c0;
+              }
+            } else {
+              peg$currPos = s2;
+              s2 = peg$c0;
+            }
+          } else {
+            peg$currPos = s2;
+            s2 = peg$c0;
+          }
+        }
+      }
+      if (s1 !== peg$FAILED) {
+        s1 = input.substring(s0, peg$currPos);
+      }
+      s0 = s1;
 
       return s0;
     }
diff --git a/spec/parser.spec.js b/spec/parser.spec.js
index 99fd538..2a20b2a 100644
--- a/spec/parser.spec.js
+++ b/spec/parser.spec.js
@@ -389,35 +389,6 @@ describe("PEG.js grammar parser", function() {
     expect('start =//aaa\n"abcd"').toParseAs(trivialGrammar);
   });
 
-  /* Canonical Action is "{ code }". */
-  it("parses Action", function() {
-    expect('start = "abcd" { code }').toParseAs(actionGrammar(" code "));
-
-    expect('start = "abcd" { code }\n').toParseAs(actionGrammar(" code "));
-  });
-
-  /* Canonical Braced is "{ code }". */
-  it("parses Braced", function() {
-    expect('start = "abcd" {}'         ).toParseAs(actionGrammar(""));
-    expect('start = "abcd" {{a}}'      ).toParseAs(actionGrammar("{a}"));
-    expect('start = "abcd" {abcd}'     ).toParseAs(actionGrammar("abcd"));
-    expect('start = "abcd" {{a}{b}{c}}').toParseAs(actionGrammar("{a}{b}{c}"));
-  });
-
-  /* Canonical NonBraceCharacters is "abcd". */
-  it("parses NonBraceCharacters", function() {
-    expect('start = "abcd" {a}'  ).toParseAs(actionGrammar("a"));
-    expect('start = "abcd" {abc}').toParseAs(actionGrammar("abc"));
-  });
-
-  /* Canonical NonBraceCharacter is "a". */
-  it("parses NonBraceCharacter", function() {
-    expect('start = "abcd" {a}').toParseAs(actionGrammar("a"));
-
-    expect('start = "abcd" {{}').toFailToParse();
-    expect('start = "abcd" {}}').toFailToParse();
-  });
-
   /* Canonical Identifier is "a". */
   it("parses Identifier", function() {
     expect('start = a:"abcd"').toParseAs(oneRuleGrammar(labeledAbcd));
@@ -590,6 +561,21 @@ describe("PEG.js grammar parser", function() {
 
   /* Digit rules are not tested. */
 
+  /* Canonical CodeBlock is "{ code }". */
+  it("parses CodeBlock", function() {
+    expect('start = "abcd" { code }').toParseAs(actionGrammar(" code "));
+  });
+
+  /* Canonical Code is "code". */
+  it("parses Code", function() {
+    expect('start = "abcd" {a}'  ).toParseAs(actionGrammar("a"));
+    expect('start = "abcd" {{a}}').toParseAs(actionGrammar("{a}"));
+    expect('start = "abcd" {aaa}').toParseAs(actionGrammar("aaa"));
+
+    expect('start = "abcd" {{}').toFailToParse();
+    expect('start = "abcd" {}}').toFailToParse();
+  });
+
   /* Unicode character category rules are not tested. */
 
   /* Token rules are not tested. */
diff --git a/src/parser.pegjs b/src/parser.pegjs
index c2082e7..6f6a6b8 100644
--- a/src/parser.pegjs
+++ b/src/parser.pegjs
@@ -41,7 +41,7 @@ Grammar
     }
 
 Initializer
-  = code:Action (__ ";")? {
+  = code:CodeBlock (__ ";")? {
       return {
         type: "initializer",
         code: code
@@ -77,7 +77,7 @@ Choice
     }
 
 Sequence
-  = first:Labeled rest:(__ Labeled)* __ code:Action {
+  = first:Labeled rest:(__ Labeled)* __ code:CodeBlock {
       var expression = rest.length > 0
         ? { type: "sequence", elements: buildList(first, rest, 1) }
         : first;
@@ -110,7 +110,7 @@ Prefixed
         expression: expression
       };
     }
-  / "&" __ code:Action {
+  / "&" __ code:CodeBlock {
       return {
         type: "semantic_and",
         code: code
@@ -122,7 +122,7 @@ Prefixed
         expression: expression
       };
     }
-  / "!" __ code:Action {
+  / "!" __ code:CodeBlock {
       return {
         type: "semantic_not",
         code: code
@@ -203,18 +203,6 @@ MultiLineComment
 SingleLineComment
   = "//" (!LineTerminator SourceCharacter)*
 
-Action "action"
-  = braced:Braced __ { return braced.substr(1, braced.length - 2); }
-
-Braced
-  = $("{" (Braced / NonBraceCharacters)* "}")
-
-NonBraceCharacters
-  = NonBraceCharacter+
-
-NonBraceCharacter
-  = [^{}]
-
 Identifier
   = !ReservedWord name:IdentifierName { return name; }
   / name:IdentifierName {
@@ -406,6 +394,12 @@ DecimalDigit
 HexDigit
   = [0-9a-f]i
 
+CodeBlock "code block"
+  = "{" code:Code "}" { return code; }
+
+Code
+  = $([^{}] / "{" Code "}")*
+
 /*
  * Unicode Character Categories
  *