diff --git a/.gitignore b/.gitignore
index eaa96d8e..5703c891 100755
--- a/.gitignore
+++ b/.gitignore
@@ -2,9 +2,6 @@
 node_modules
 package-lock.json
 
-# Noise Parser
-noiseParser.js
-
 # macOS
 .DS_Store
 
diff --git a/src/parser/noiseParser.js b/src/parser/noiseParser.js
new file mode 100644
index 00000000..784dbe0f
--- /dev/null
+++ b/src/parser/noiseParser.js
@@ -0,0 +1,1235 @@
+/*
+ * Generated by PEG.js 0.10.0.
+ *
+ * http://pegjs.org/
+ */
+
+"use strict";
+
+function peg$subclass(child, parent) {
+  function ctor() { this.constructor = child; }
+  ctor.prototype = parent.prototype;
+  child.prototype = new ctor();
+}
+
+function peg$SyntaxError(message, expected, found, location) {
+  this.message  = message;
+  this.expected = expected;
+  this.found    = found;
+  this.location = location;
+  this.name     = "SyntaxError";
+
+  if (typeof Error.captureStackTrace === "function") {
+    Error.captureStackTrace(this, peg$SyntaxError);
+  }
+}
+
+peg$subclass(peg$SyntaxError, Error);
+
+peg$SyntaxError.buildMessage = function(expected, found) {
+  var DESCRIBE_EXPECTATION_FNS = {
+        literal: function(expectation) {
+          return "\"" + literalEscape(expectation.text) + "\"";
+        },
+
+        "class": function(expectation) {
+          var escapedParts = "",
+              i;
+
+          for (i = 0; i < expectation.parts.length; i++) {
+            escapedParts += expectation.parts[i] instanceof Array
+              ? classEscape(expectation.parts[i][0]) + "-" + classEscape(expectation.parts[i][1])
+              : classEscape(expectation.parts[i]);
+          }
+
+          return "[" + (expectation.inverted ? "^" : "") + escapedParts + "]";
+        },
+
+        any: function(expectation) {
+          return "any character";
+        },
+
+        end: function(expectation) {
+          return "end of input";
+        },
+
+        other: function(expectation) {
+          return expectation.description;
+        }
+      };
+
+  function hex(ch) {
+    return ch.charCodeAt(0).toString(16).toUpperCase();
+  }
+
+  function literalEscape(s) {
+    return s
+      .replace(/\\/g, '\\\\')
+      .replace(/"/g,  '\\"')
+      .replace(/\0/g, '\\0')
+      .replace(/\t/g, '\\t')
+      .replace(/\n/g, '\\n')
+      .replace(/\r/g, '\\r')
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
+  }
+
+  function classEscape(s) {
+    return s
+      .replace(/\\/g, '\\\\')
+      .replace(/\]/g, '\\]')
+      .replace(/\^/g, '\\^')
+      .replace(/-/g,  '\\-')
+      .replace(/\0/g, '\\0')
+      .replace(/\t/g, '\\t')
+      .replace(/\n/g, '\\n')
+      .replace(/\r/g, '\\r')
+      .replace(/[\x00-\x0F]/g,          function(ch) { return '\\x0' + hex(ch); })
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return '\\x'  + hex(ch); });
+  }
+
+  function describeExpectation(expectation) {
+    return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation);
+  }
+
+  function describeExpected(expected) {
+    var descriptions = new Array(expected.length),
+        i, j;
+
+    for (i = 0; i < expected.length; i++) {
+      descriptions[i] = describeExpectation(expected[i]);
+    }
+
+    descriptions.sort();
+
+    if (descriptions.length > 0) {
+      for (i = 1, j = 1; i < descriptions.length; i++) {
+        if (descriptions[i - 1] !== descriptions[i]) {
+          descriptions[j] = descriptions[i];
+          j++;
+        }
+      }
+      descriptions.length = j;
+    }
+
+    switch (descriptions.length) {
+      case 1:
+        return descriptions[0];
+
+      case 2:
+        return descriptions[0] + " or " + descriptions[1];
+
+      default:
+        return descriptions.slice(0, -1).join(", ")
+          + ", or "
+          + descriptions[descriptions.length - 1];
+    }
+  }
+
+  function describeFound(found) {
+    return found ? "\"" + literalEscape(found) + "\"" : "end of input";
+  }
+
+  return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found.";
+};
+
+function peg$parse(input, options) {
+  options = options !== void 0 ? options : {};
+
+  var peg$FAILED = {},
+
+      peg$startRuleFunctions = { Pattern: peg$parsePattern },
+      peg$startRuleFunction  = peg$parsePattern,
+
+      peg$c0 = ":",
+      peg$c1 = peg$literalExpectation(":", false),
+      peg$c2 = function(Name, PreMessages, Messages) {
+      		let pattern = {
+      			name: Name,
+      			preMessages: [],
+      			messages: Messages
+      		};
+      		pattern.preMessages = PreMessages? PreMessages : [];
+      		check.preMessages(pattern);
+      		check.messages(pattern);
+      		check.psk(pattern);
+      		check.transportMessages(pattern);
+          	return pattern;
+          },
+      peg$c3 = /^[a-zA-Z0-9]/,
+      peg$c4 = peg$classExpectation([["a", "z"], ["A", "Z"], ["0", "9"]], false, false),
+      peg$c5 = function() {
+      		if (text().length > 16) {
+      			error(errMsg.tooLongName);
+      		} else {
+      			return text();
+      		}
+      	},
+      peg$c6 = /^[ \t\n\r]/,
+      peg$c7 = peg$classExpectation([" ", "\t", "\n", "\r"], false, false),
+      peg$c8 = function() {
+      		return text();
+      	},
+      peg$c9 = "...",
+      peg$c10 = peg$literalExpectation("...", false),
+      peg$c11 = function() {
+      		return (text().length > 0)
+      	},
+      peg$c12 = "->",
+      peg$c13 = peg$literalExpectation("->", false),
+      peg$c14 = function() {
+      		return 'send';
+      	},
+      peg$c15 = "<-",
+      peg$c16 = peg$literalExpectation("<-", false),
+      peg$c17 = function() {
+      		return 'recv';
+      	},
+      peg$c18 = "psk",
+      peg$c19 = peg$literalExpectation("psk", false),
+      peg$c20 = "ss",
+      peg$c21 = peg$literalExpectation("ss", false),
+      peg$c22 = "se",
+      peg$c23 = peg$literalExpectation("se", false),
+      peg$c24 = "es",
+      peg$c25 = peg$literalExpectation("es", false),
+      peg$c26 = "ee",
+      peg$c27 = peg$literalExpectation("ee", false),
+      peg$c28 = "s",
+      peg$c29 = peg$literalExpectation("s", false),
+      peg$c30 = "e",
+      peg$c31 = peg$literalExpectation("e", false),
+      peg$c32 = "e, s",
+      peg$c33 = peg$literalExpectation("e, s", false),
+      peg$c34 = ", ",
+      peg$c35 = peg$literalExpectation(", ", false),
+      peg$c36 = ",",
+      peg$c37 = peg$literalExpectation(",", false),
+      peg$c38 = function() {
+      		let normalized = text().replace(/\,\s/g, ',');
+      		return normalized.split(',');
+      	},
+      peg$c39 = function(Dir, Token) {
+      		return {
+      			type: 'PreMessage',
+      			dir: Dir,
+      			tokens: Token
+      		};
+      	},
+      peg$c40 = function(PreMessages) {
+      		let pMsg = [PreMessages[0][0]];
+      		if (!Array.isArray(PreMessages[1])) {
+      			// Do nothing.
+      		} else if (PreMessages[1][0].dir === 'recv') {
+      			pMsg.push(PreMessages[1][0]);
+      		} else if (PreMessages[1][0].dir === 'send') {
+      			pMsg.unshift(PreMessages[1][0]);
+      		}
+      		return pMsg;
+      	},
+      peg$c41 = function(Dir, Tokens) {
+      		return {
+      			type: 'Message',
+      			dir: Dir,
+      			tokens: Tokens? Tokens : []
+      		};
+      	},
+      peg$c42 = function(Messages) {
+      		let msgs = [];
+      		Messages.forEach((msg, i) => {
+      			msgs.push(msg[0]);
+      		});
+      		return msgs;
+      	},
+
+      peg$currPos          = 0,
+      peg$savedPos         = 0,
+      peg$posDetailsCache  = [{ line: 1, column: 1 }],
+      peg$maxFailPos       = 0,
+      peg$maxFailExpected  = [],
+      peg$silentFails      = 0,
+
+      peg$result;
+
+  if ("startRule" in options) {
+    if (!(options.startRule in peg$startRuleFunctions)) {
+      throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
+    }
+
+    peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
+  }
+
+  function text() {
+    return input.substring(peg$savedPos, peg$currPos);
+  }
+
+  function location() {
+    return peg$computeLocation(peg$savedPos, peg$currPos);
+  }
+
+  function expected(description, location) {
+    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos)
+
+    throw peg$buildStructuredError(
+      [peg$otherExpectation(description)],
+      input.substring(peg$savedPos, peg$currPos),
+      location
+    );
+  }
+
+  function error(message, location) {
+    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos)
+
+    throw peg$buildSimpleError(message, location);
+  }
+
+  function peg$literalExpectation(text, ignoreCase) {
+    return { type: "literal", text: text, ignoreCase: ignoreCase };
+  }
+
+  function peg$classExpectation(parts, inverted, ignoreCase) {
+    return { type: "class", parts: parts, inverted: inverted, ignoreCase: ignoreCase };
+  }
+
+  function peg$anyExpectation() {
+    return { type: "any" };
+  }
+
+  function peg$endExpectation() {
+    return { type: "end" };
+  }
+
+  function peg$otherExpectation(description) {
+    return { type: "other", description: description };
+  }
+
+  function peg$computePosDetails(pos) {
+    var details = peg$posDetailsCache[pos], p;
+
+    if (details) {
+      return details;
+    } else {
+      p = pos - 1;
+      while (!peg$posDetailsCache[p]) {
+        p--;
+      }
+
+      details = peg$posDetailsCache[p];
+      details = {
+        line:   details.line,
+        column: details.column
+      };
+
+      while (p < pos) {
+        if (input.charCodeAt(p) === 10) {
+          details.line++;
+          details.column = 1;
+        } else {
+          details.column++;
+        }
+
+        p++;
+      }
+
+      peg$posDetailsCache[pos] = details;
+      return details;
+    }
+  }
+
+  function peg$computeLocation(startPos, endPos) {
+    var startPosDetails = peg$computePosDetails(startPos),
+        endPosDetails   = peg$computePosDetails(endPos);
+
+    return {
+      start: {
+        offset: startPos,
+        line:   startPosDetails.line,
+        column: startPosDetails.column
+      },
+      end: {
+        offset: endPos,
+        line:   endPosDetails.line,
+        column: endPosDetails.column
+      }
+    };
+  }
+
+  function peg$fail(expected) {
+    if (peg$currPos < peg$maxFailPos) { return; }
+
+    if (peg$currPos > peg$maxFailPos) {
+      peg$maxFailPos = peg$currPos;
+      peg$maxFailExpected = [];
+    }
+
+    peg$maxFailExpected.push(expected);
+  }
+
+  function peg$buildSimpleError(message, location) {
+    return new peg$SyntaxError(message, null, null, location);
+  }
+
+  function peg$buildStructuredError(expected, found, location) {
+    return new peg$SyntaxError(
+      peg$SyntaxError.buildMessage(expected, found),
+      expected,
+      found,
+      location
+    );
+  }
+
+  function peg$parsePattern() {
+    var s0, s1, s2, s3, s4, s5, s6;
+
+    s0 = peg$currPos;
+    s1 = peg$parseIdentifier();
+    if (s1 !== peg$FAILED) {
+      if (input.charCodeAt(peg$currPos) === 58) {
+        s2 = peg$c0;
+        peg$currPos++;
+      } else {
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c1); }
+      }
+      if (s2 !== peg$FAILED) {
+        s3 = peg$parse_();
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parsePreMessages();
+          if (s4 === peg$FAILED) {
+            s4 = null;
+          }
+          if (s4 !== peg$FAILED) {
+            s5 = peg$parse_();
+            if (s5 !== peg$FAILED) {
+              s6 = peg$parseMessages();
+              if (s6 !== peg$FAILED) {
+                peg$savedPos = s0;
+                s1 = peg$c2(s1, s4, s6);
+                s0 = s1;
+              } else {
+                peg$currPos = s0;
+                s0 = peg$FAILED;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$FAILED;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$FAILED;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
+  function peg$parseIdentifier() {
+    var s0, s1, s2;
+
+    s0 = peg$currPos;
+    s1 = [];
+    if (peg$c3.test(input.charAt(peg$currPos))) {
+      s2 = input.charAt(peg$currPos);
+      peg$currPos++;
+    } else {
+      s2 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$c4); }
+    }
+    if (s2 !== peg$FAILED) {
+      while (s2 !== peg$FAILED) {
+        s1.push(s2);
+        if (peg$c3.test(input.charAt(peg$currPos))) {
+          s2 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s2 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c4); }
+        }
+      }
+    } else {
+      s1 = peg$FAILED;
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c5();
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parse_() {
+    var s0, s1, s2;
+
+    s0 = peg$currPos;
+    s1 = [];
+    if (peg$c6.test(input.charAt(peg$currPos))) {
+      s2 = input.charAt(peg$currPos);
+      peg$currPos++;
+    } else {
+      s2 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$c7); }
+    }
+    while (s2 !== peg$FAILED) {
+      s1.push(s2);
+      if (peg$c6.test(input.charAt(peg$currPos))) {
+        s2 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c7); }
+      }
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c8();
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parseEllipsis() {
+    var s0, s1, s2, s3;
+
+    s0 = peg$currPos;
+    s1 = peg$parse_();
+    if (s1 !== peg$FAILED) {
+      if (input.substr(peg$currPos, 3) === peg$c9) {
+        s2 = peg$c9;
+        peg$currPos += 3;
+      } else {
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c10); }
+      }
+      if (s2 !== peg$FAILED) {
+        s3 = peg$parse_();
+        if (s3 !== peg$FAILED) {
+          peg$savedPos = s0;
+          s1 = peg$c11();
+          s0 = s1;
+        } else {
+          peg$currPos = s0;
+          s0 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
+  function peg$parseArrow() {
+    var s0, s1;
+
+    s0 = peg$currPos;
+    if (input.substr(peg$currPos, 2) === peg$c12) {
+      s1 = peg$c12;
+      peg$currPos += 2;
+    } else {
+      s1 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$c13); }
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c14();
+    }
+    s0 = s1;
+    if (s0 === peg$FAILED) {
+      s0 = peg$currPos;
+      if (input.substr(peg$currPos, 2) === peg$c15) {
+        s1 = peg$c15;
+        peg$currPos += 2;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c16); }
+      }
+      if (s1 !== peg$FAILED) {
+        peg$savedPos = s0;
+        s1 = peg$c17();
+      }
+      s0 = s1;
+    }
+
+    return s0;
+  }
+
+  function peg$parseToken() {
+    var s0, s1;
+
+    s0 = peg$currPos;
+    if (input.substr(peg$currPos, 3) === peg$c18) {
+      s1 = peg$c18;
+      peg$currPos += 3;
+    } else {
+      s1 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$c19); }
+    }
+    if (s1 === peg$FAILED) {
+      if (input.substr(peg$currPos, 2) === peg$c20) {
+        s1 = peg$c20;
+        peg$currPos += 2;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c21); }
+      }
+      if (s1 === peg$FAILED) {
+        if (input.substr(peg$currPos, 2) === peg$c22) {
+          s1 = peg$c22;
+          peg$currPos += 2;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c23); }
+        }
+        if (s1 === peg$FAILED) {
+          if (input.substr(peg$currPos, 2) === peg$c24) {
+            s1 = peg$c24;
+            peg$currPos += 2;
+          } else {
+            s1 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c25); }
+          }
+          if (s1 === peg$FAILED) {
+            if (input.substr(peg$currPos, 2) === peg$c26) {
+              s1 = peg$c26;
+              peg$currPos += 2;
+            } else {
+              s1 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c27); }
+            }
+            if (s1 === peg$FAILED) {
+              if (input.charCodeAt(peg$currPos) === 115) {
+                s1 = peg$c28;
+                peg$currPos++;
+              } else {
+                s1 = peg$FAILED;
+                if (peg$silentFails === 0) { peg$fail(peg$c29); }
+              }
+              if (s1 === peg$FAILED) {
+                if (input.charCodeAt(peg$currPos) === 101) {
+                  s1 = peg$c30;
+                  peg$currPos++;
+                } else {
+                  s1 = peg$FAILED;
+                  if (peg$silentFails === 0) { peg$fail(peg$c31); }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c8();
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parsePreMessageToken() {
+    var s0, s1;
+
+    s0 = peg$currPos;
+    if (input.substr(peg$currPos, 4) === peg$c32) {
+      s1 = peg$c32;
+      peg$currPos += 4;
+    } else {
+      s1 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$c33); }
+    }
+    if (s1 === peg$FAILED) {
+      if (input.charCodeAt(peg$currPos) === 101) {
+        s1 = peg$c30;
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c31); }
+      }
+      if (s1 === peg$FAILED) {
+        if (input.charCodeAt(peg$currPos) === 115) {
+          s1 = peg$c28;
+          peg$currPos++;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c29); }
+        }
+      }
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c8();
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parseTokens() {
+    var s0, s1, s2, s3, s4;
+
+    s0 = peg$currPos;
+    s1 = [];
+    s2 = peg$currPos;
+    s3 = peg$parseToken();
+    if (s3 !== peg$FAILED) {
+      if (input.substr(peg$currPos, 2) === peg$c34) {
+        s4 = peg$c34;
+        peg$currPos += 2;
+      } else {
+        s4 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c35); }
+      }
+      if (s4 === peg$FAILED) {
+        if (input.charCodeAt(peg$currPos) === 44) {
+          s4 = peg$c36;
+          peg$currPos++;
+        } else {
+          s4 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c37); }
+        }
+      }
+      if (s4 !== peg$FAILED) {
+        s3 = [s3, s4];
+        s2 = s3;
+      } else {
+        peg$currPos = s2;
+        s2 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s2;
+      s2 = peg$FAILED;
+    }
+    while (s2 !== peg$FAILED) {
+      s1.push(s2);
+      s2 = peg$currPos;
+      s3 = peg$parseToken();
+      if (s3 !== peg$FAILED) {
+        if (input.substr(peg$currPos, 2) === peg$c34) {
+          s4 = peg$c34;
+          peg$currPos += 2;
+        } else {
+          s4 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c35); }
+        }
+        if (s4 === peg$FAILED) {
+          if (input.charCodeAt(peg$currPos) === 44) {
+            s4 = peg$c36;
+            peg$currPos++;
+          } else {
+            s4 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c37); }
+          }
+        }
+        if (s4 !== peg$FAILED) {
+          s3 = [s3, s4];
+          s2 = s3;
+        } else {
+          peg$currPos = s2;
+          s2 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s2;
+        s2 = peg$FAILED;
+      }
+    }
+    if (s1 !== peg$FAILED) {
+      s2 = peg$parseToken();
+      if (s2 !== peg$FAILED) {
+        peg$savedPos = s0;
+        s1 = peg$c38();
+        s0 = s1;
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
+  function peg$parsePreMessage() {
+    var s0, s1, s2, s3, s4;
+
+    s0 = peg$currPos;
+    s1 = peg$parse_();
+    if (s1 !== peg$FAILED) {
+      s2 = peg$parseArrow();
+      if (s2 !== peg$FAILED) {
+        s3 = peg$parse_();
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parsePreMessageToken();
+          if (s4 !== peg$FAILED) {
+            peg$savedPos = s0;
+            s1 = peg$c39(s2, s4);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$FAILED;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
+  function peg$parsePreMessages() {
+    var s0, s1, s2, s3, s4, s5;
+
+    s0 = peg$currPos;
+    s1 = peg$currPos;
+    s2 = peg$currPos;
+    s3 = peg$parsePreMessage();
+    if (s3 !== peg$FAILED) {
+      s4 = peg$parse_();
+      if (s4 !== peg$FAILED) {
+        s3 = [s3, s4];
+        s2 = s3;
+      } else {
+        peg$currPos = s2;
+        s2 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s2;
+      s2 = peg$FAILED;
+    }
+    if (s2 !== peg$FAILED) {
+      s3 = peg$currPos;
+      s4 = peg$parsePreMessage();
+      if (s4 !== peg$FAILED) {
+        s5 = peg$parse_();
+        if (s5 !== peg$FAILED) {
+          s4 = [s4, s5];
+          s3 = s4;
+        } else {
+          peg$currPos = s3;
+          s3 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s3;
+        s3 = peg$FAILED;
+      }
+      if (s3 === peg$FAILED) {
+        s3 = null;
+      }
+      if (s3 !== peg$FAILED) {
+        s4 = peg$parseEllipsis();
+        if (s4 !== peg$FAILED) {
+          s2 = [s2, s3, s4];
+          s1 = s2;
+        } else {
+          peg$currPos = s1;
+          s1 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s1;
+        s1 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s1;
+      s1 = peg$FAILED;
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c40(s1);
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parseMessage() {
+    var s0, s1, s2, s3, s4;
+
+    s0 = peg$currPos;
+    s1 = peg$parse_();
+    if (s1 !== peg$FAILED) {
+      s2 = peg$parseArrow();
+      if (s2 !== peg$FAILED) {
+        s3 = peg$parse_();
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parseTokens();
+          if (s4 === peg$FAILED) {
+            s4 = null;
+          }
+          if (s4 !== peg$FAILED) {
+            peg$savedPos = s0;
+            s1 = peg$c41(s2, s4);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$FAILED;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$FAILED;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
+  function peg$parseMessages() {
+    var s0, s1, s2, s3, s4;
+
+    s0 = peg$currPos;
+    s1 = [];
+    s2 = peg$currPos;
+    s3 = peg$parseMessage();
+    if (s3 !== peg$FAILED) {
+      s4 = peg$parse_();
+      if (s4 !== peg$FAILED) {
+        s3 = [s3, s4];
+        s2 = s3;
+      } else {
+        peg$currPos = s2;
+        s2 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s2;
+      s2 = peg$FAILED;
+    }
+    if (s2 !== peg$FAILED) {
+      while (s2 !== peg$FAILED) {
+        s1.push(s2);
+        s2 = peg$currPos;
+        s3 = peg$parseMessage();
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parse_();
+          if (s4 !== peg$FAILED) {
+            s3 = [s3, s4];
+            s2 = s3;
+          } else {
+            peg$currPos = s2;
+            s2 = peg$FAILED;
+          }
+        } else {
+          peg$currPos = s2;
+          s2 = peg$FAILED;
+        }
+      }
+    } else {
+      s1 = peg$FAILED;
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$c42(s1);
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+
+  const g = {
+  	s: 0,
+  	e: 0,
+  	rs: 0,
+  	re: 0,
+  	ss: 0,
+  	se: 0,
+  	es: 0,
+  	ee: 0
+  };
+
+  const util = {
+  	hasDuplicates: (arr) => {
+  		let vo = {};
+  		for (let i = 0; i < arr.length; ++i) {
+  			let v = arr[i];
+  			if (v in vo) { return true; }
+  			vo[v] = true;
+  		}
+  		return false;
+  	}
+  };
+
+  const errMsg = {
+  	// Below are validity rules specific to Noise Explorer and not to the Noise Protocol Framework.
+  	tooLongName: 'Noise Handshake Pattern names with a maximum length of 16 characters are currently supported.',
+  	tooManyTokens: 'Noise Message Patterns with a maximum of 8 tokens are currently supported.',
+  	tooManyMessages: 'Noise Handshake Patterns with a maximum of 8 message patterns are currently supported.',
+  	moreThanOnePsk: 'Noise Handshake Patterns with a maximum of one PSK are currently supported.',
+  	// Below are validity rules which we are not exactly sure are shared by the Noise Protocol Framework (but likely are.)
+  	tokenOrderIncorrect: 'Public key tokens must be ordered in a message to appear before Diffie-Hellman operations that implicate them.',
+  	transportNotLast: 'Noise Handshake Patterns can only contain transport handshake messages at the very bottom of the pattern.',
+  	transportOnly: 'Noise Handshake Patterns cannot consist purely of transport messages.',
+  	unusedKeySent: 'Noise Handshake Patterns should not contain key shares that are not subsequently used in any Diffie-Hellman operation.',
+  	// Below are validity rules shared by the Noise Protocol Framework.
+  	dupTokens: 'Noise Handshake Patterns must not contain duplicate tokens in the same message flight.',
+  	keySentMoreThanOnce: 'Principals must not send their static public key or ephemeral public key more than once per handshake.',
+  	dhSentMoreThanOnce: 'Principals must not perform the same Diffie-Hellman key agreement more than once per handshake.',
+  	wrongPskModifier: 'PSK modifiers must correctly indicate the position of PSK tokens.',
+  	wrongPskLocation: 'PSK tokens must appear at the beginning or end of the first handshake message or at the end of any other handshake message.',
+  	pskNotAtEndOfName: 'PSK modifiers must appear at the end of the Noise Handshake Pattern name.',
+  	wrongMessageDir: 'Message direction within a Noise Handshake Pattern must alternate (initiator -> responder, initiator <- responder), with the first message being sent by the initiator.',
+  	dhWithUnknownKey: 'Principals cannot perform a Diffie-Hellman operation with a key share that does not exist.',
+  	seEeRule: 'After an se token, the initiator must not send a handshake payload or transport payload unless there has also been an ee token.',
+  	ssEsRule: 'After an ss token, the initiator must not send a handshake payload or transport payload unless there has also been an es token.',
+  	esEeRule: 'After an es token, the responder must not send a handshake payload or transport payload unless there has also been an ee token.',
+  	ssSeRule: 'After an ss token, the responder must not send a handshake payload or transport payload unless there has also been an se token.'
+  };
+
+  const check = {
+  	preMessages: (pattern) => {
+  		pattern.preMessages.forEach((preMessage) => {
+  			if (preMessage.tokens.indexOf('s') >= 0) {
+  				(preMessage.dir === 'send')? g.s++ : g.rs++;
+  			}
+  			if (preMessage.tokens.indexOf('e') >= 0) {
+  				(preMessage.dir === 'send')? g.e++ : g.re++;
+  			}
+  		});
+  	},
+  	messages: (pattern) => {
+  		if (pattern.messages.length > 8) {
+  			error(errMsg.tooManyMessages);
+  		}
+  		pattern.messages.forEach((message, i) => {
+  			if (
+  				((i % 2)  && (message.dir === 'send')) ||
+  				(!(i % 2) && (message.dir === 'recv'))
+  			) {
+  				error(errMsg.wrongMessageDir);
+  			}
+  			if (util.hasDuplicates(message.tokens)) {
+  				error(errMsg.dupTokens);
+  			}
+  			if (message.tokens.length > 8) {
+  				error(errMsg.tooManyTokens);
+  			}
+  			if (message.tokens.indexOf('s') >= 0) {
+  				if (((message.dir === 'send') && (
+  					(
+  						(message.tokens.indexOf('se') >= 0) &&
+  						(message.tokens.indexOf('se') < message.tokens.indexOf('s'))
+  					) || (
+  						(message.tokens.indexOf('ss') >= 0) &&
+  						(message.tokens.indexOf('ss') < message.tokens.indexOf('s'))
+  					)
+  				)) || ((message.dir === 'recv') && (
+  					(
+  						(message.tokens.indexOf('es') >= 0) &&
+  						(message.tokens.indexOf('es') < message.tokens.indexOf('s'))
+  					) || (
+  						(message.tokens.indexOf('ss') >= 0) &&
+  						(message.tokens.indexOf('ss') < message.tokens.indexOf('s'))
+  					)
+  				))) {
+  					error(errMsg.tokenOrderIncorrect);
+  				}
+  				(message.dir === 'send')? g.s++ : g.rs++;
+  			}
+  			if (message.tokens.indexOf('e') >= 0) {
+  				if (((message.dir === 'send') && (
+  					(
+  						(message.tokens.indexOf('es') >= 0) &&
+  						(message.tokens.indexOf('es') < message.tokens.indexOf('e'))
+  					) || (
+  						(message.tokens.indexOf('ee') >= 0) &&
+  						(message.tokens.indexOf('ee') < message.tokens.indexOf('e'))
+  					)
+  				)) || ((message.dir === 'recv') && (
+  					(
+  						(message.tokens.indexOf('se') >= 0) &&
+  						(message.tokens.indexOf('se') < message.tokens.indexOf('e'))
+  					) || (
+  						(message.tokens.indexOf('ee') >= 0) &&
+  						(message.tokens.indexOf('ee') < message.tokens.indexOf('e'))
+  					)
+  				))) {
+  					error(errMsg.tokenOrderIncorrect);
+  				}
+  				(message.dir === 'send')? g.e++ : g.re++;
+  			}
+  			if (message.tokens.indexOf('ss') >= 0) {
+  				g.ss++;
+  				if (
+  					(message.dir === 'send') &&
+  					(g.es === 0) &&
+  					(message.tokens.indexOf('es') < 0)
+  				) {
+  					error(errMsg.ssEsRule);
+  				}
+  				if (
+  					(message.dir === 'recv') &&
+  					(g.se === 0) &&
+  					(message.tokens.indexOf('se') < 0)
+  				) {
+  					error(errMsg.ssSeRule);
+  				}
+  			}
+  			if (message.tokens.indexOf('se') >= 0) {
+  				g.se++;
+  				if (
+  					(message.dir === 'send') &&
+  					(g.ee === 0) &&
+  					(message.tokens.indexOf('ee') < 0)
+  				) {
+  					error(errMsg.seEeRule);
+  				}
+  			}
+  			if (message.tokens.indexOf('es') >= 0) {
+  				g.es++;
+  				if (
+  					(message.dir === 'recv') &&
+  					(g.ee === 0) &&
+  					(message.tokens.indexOf('ee') < 0)
+  				) {
+  					error(errMsg.esEeRule);
+  				}
+  			}
+  			if (message.tokens.indexOf('ee') >= 0) {
+  				g.ee++;
+  			}
+  			if (
+  				(g.ss && (!g.s || !g.rs)) ||
+  				(g.se && (!g.s || !g.re)) ||
+  				(g.es && (!g.e || !g.rs)) ||
+  				(g.ee && (!g.e || !g.re))
+  		 	) {
+  				error(errMsg.dhWithUnknownKey);
+  			}
+  		});
+  		if (
+  			(g.s  && (!g.ss && !g.se)) ||
+  			(g.e  && (!g.es && !g.ee)) ||
+  			(g.rs && (!g.ss && !g.es)) ||
+  			(g.re && (!g.se && !g.ee))
+  		) {
+  			error(errMsg.unusedKeySent);
+  		}
+  		if  (
+  			(g.s > 1) || (g.e > 1) ||
+  			(g.rs > 1) || (g.re > 1)
+  		) {
+  			error(errMsg.keySentMoreThanOnce);
+  		}
+  		if  (
+  			(g.ee > 1) || (g.es > 1) ||
+  			(g.se > 1) || (g.ss > 1)
+  		) {
+  			error(errMsg.dhSentMoreThanOnce);
+  		}
+  	},
+  	psk: (pattern) => {
+  		let pskMods = pattern.name.match(/psk\d/g);
+  		if (!pskMods) {
+  			pattern.messages.forEach((message) => {
+  				if (message.tokens.indexOf('psk') >= 0) {
+  					error(errMsg.wrongPskModifier);
+  				}
+  			});
+  			return false;
+  		}
+  		if (pskMods.length > 1) {
+  			error(errMsg.moreThanOnePsk);
+  		}
+  		if (!/psk\d$/.test(pattern.name)) {
+  			error(errMsg.pskNotAtEndOfName);
+  		}
+  		pskMods.forEach((pskMod) => {
+  			pskMod = parseInt(pskMod.charAt(3), 10);
+  			if (pskMod > pattern.messages.length) {
+  				error(errMsg.wrongPskModifier);
+  			} else if (pskMod === 0) {
+  				let tokens = pattern.messages[pskMod].tokens;
+  				if (tokens.indexOf('psk') < 0) {
+  					error(errMsg.wrongPskModifier);
+  				} else if (tokens.indexOf('psk') > 0) {
+  					error(errMsg.wrongPskLocation);
+  				}
+  			} else {
+  				let tokens = pattern.messages[pskMod - 1].tokens;
+  				if (tokens.indexOf('psk') < 0) {
+  					error(errMsg.wrongPskModifier);
+  				} else if (tokens.indexOf('psk') !== (tokens.length - 1)) {
+  					(pskMod === 1)? error(errMsg.wrongPskModifier) : error(errMsg.wrongPskLocation);
+  				}
+  			}
+  		});
+  	},
+  	transportMessages: (pattern) => {
+  		let transportMessage = -1;
+  		pattern.messages.forEach((message, i) => {
+  			if (
+  				(message.tokens.length === 0) &&
+  				(transportMessage === -1)
+  			) {
+  				transportMessage = i;
+  			}
+  			if (
+  				(message.tokens.length > 0) &&
+  				(transportMessage >= 0) &&
+  				(i > transportMessage)
+  			) {
+  				error(errMsg.transportNotLast);
+  			}
+  		});
+  		if (pattern.messages[0].tokens.length === 0) {
+  			error(errMsg.transportOnly);
+  		}
+  	}
+  };
+
+
+  peg$result = peg$startRuleFunction();
+
+  if (peg$result !== peg$FAILED && peg$currPos === input.length) {
+    return peg$result;
+  } else {
+    if (peg$result !== peg$FAILED && peg$currPos < input.length) {
+      peg$fail(peg$endExpectation());
+    }
+
+    throw peg$buildStructuredError(
+      peg$maxFailExpected,
+      peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null,
+      peg$maxFailPos < input.length
+        ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1)
+        : peg$computeLocation(peg$maxFailPos, peg$maxFailPos)
+    );
+  }
+}
+
+module.exports = {
+  SyntaxError: peg$SyntaxError,
+  parse:       peg$parse
+};