move mitmproxy/web to root

2 files changed, 2023 insertions, 0 deletions

diff --git a/web/src/js/filt/filt.js b/web/src/js/filt/filt.js
new file mode 100644
index 00000000..45b42f3a
--- /dev/null
+++ b/web/src/js/filt/filt.js
@@ -0,0 +1,1774 @@
+module.exports = (function() {
+  /*
+   * Generated by PEG.js 0.8.0.
+   *
+   * http://pegjs.majda.cz/
+   */
+
+  function peg$subclass(child, parent) {
+    function ctor() { this.constructor = child; }
+    ctor.prototype = parent.prototype;
+    child.prototype = new ctor();
+  }
+
+  function SyntaxError(message, expected, found, offset, line, column) {
+    this.message  = message;
+    this.expected = expected;
+    this.found    = found;
+    this.offset   = offset;
+    this.line     = line;
+    this.column   = column;
+
+    this.name     = "SyntaxError";
+  }
+
+  peg$subclass(SyntaxError, Error);
+
+  function parse(input) {
+    var options = arguments.length > 1 ? arguments[1] : {},
+
+        peg$FAILED = {},
+
+        peg$startRuleFunctions = { start: peg$parsestart },
+        peg$startRuleFunction  = peg$parsestart,
+
+        peg$c0 = { type: "other", description: "filter expression" },
+        peg$c1 = peg$FAILED,
+        peg$c2 = function(orExpr) { return orExpr; },
+        peg$c3 = [],
+        peg$c4 = function() {return trueFilter; },
+        peg$c5 = { type: "other", description: "whitespace" },
+        peg$c6 = /^[ \t\n\r]/,
+        peg$c7 = { type: "class", value: "[ \\t\\n\\r]", description: "[ \\t\\n\\r]" },
+        peg$c8 = { type: "other", description: "control character" },
+        peg$c9 = /^[|&!()~"]/,
+        peg$c10 = { type: "class", value: "[|&!()~\"]", description: "[|&!()~\"]" },
+        peg$c11 = { type: "other", description: "optional whitespace" },
+        peg$c12 = "|",
+        peg$c13 = { type: "literal", value: "|", description: "\"|\"" },
+        peg$c14 = function(first, second) { return or(first, second); },
+        peg$c15 = "&",
+        peg$c16 = { type: "literal", value: "&", description: "\"&\"" },
+        peg$c17 = function(first, second) { return and(first, second); },
+        peg$c18 = "!",
+        peg$c19 = { type: "literal", value: "!", description: "\"!\"" },
+        peg$c20 = function(expr) { return not(expr); },
+        peg$c21 = "(",
+        peg$c22 = { type: "literal", value: "(", description: "\"(\"" },
+        peg$c23 = ")",
+        peg$c24 = { type: "literal", value: ")", description: "\")\"" },
+        peg$c25 = function(expr) { return binding(expr); },
+        peg$c26 = "~a",
+        peg$c27 = { type: "literal", value: "~a", description: "\"~a\"" },
+        peg$c28 = function() { return assetFilter; },
+        peg$c29 = "~e",
+        peg$c30 = { type: "literal", value: "~e", description: "\"~e\"" },
+        peg$c31 = function() { return errorFilter; },
+        peg$c32 = "~q",
+        peg$c33 = { type: "literal", value: "~q", description: "\"~q\"" },
+        peg$c34 = function() { return noResponseFilter; },
+        peg$c35 = "~s",
+        peg$c36 = { type: "literal", value: "~s", description: "\"~s\"" },
+        peg$c37 = function() { return responseFilter; },
+        peg$c38 = "true",
+        peg$c39 = { type: "literal", value: "true", description: "\"true\"" },
+        peg$c40 = function() { return trueFilter; },
+        peg$c41 = "false",
+        peg$c42 = { type: "literal", value: "false", description: "\"false\"" },
+        peg$c43 = function() { return falseFilter; },
+        peg$c44 = "~c",
+        peg$c45 = { type: "literal", value: "~c", description: "\"~c\"" },
+        peg$c46 = function(s) { return responseCode(s); },
+        peg$c47 = "~d",
+        peg$c48 = { type: "literal", value: "~d", description: "\"~d\"" },
+        peg$c49 = function(s) { return domain(s); },
+        peg$c50 = "~h",
+        peg$c51 = { type: "literal", value: "~h", description: "\"~h\"" },
+        peg$c52 = function(s) { return header(s); },
+        peg$c53 = "~hq",
+        peg$c54 = { type: "literal", value: "~hq", description: "\"~hq\"" },
+        peg$c55 = function(s) { return requestHeader(s); },
+        peg$c56 = "~hs",
+        peg$c57 = { type: "literal", value: "~hs", description: "\"~hs\"" },
+        peg$c58 = function(s) { return responseHeader(s); },
+        peg$c59 = "~m",
+        peg$c60 = { type: "literal", value: "~m", description: "\"~m\"" },
+        peg$c61 = function(s) { return method(s); },
+        peg$c62 = "~t",
+        peg$c63 = { type: "literal", value: "~t", description: "\"~t\"" },
+        peg$c64 = function(s) { return contentType(s); },
+        peg$c65 = "~tq",
+        peg$c66 = { type: "literal", value: "~tq", description: "\"~tq\"" },
+        peg$c67 = function(s) { return requestContentType(s); },
+        peg$c68 = "~ts",
+        peg$c69 = { type: "literal", value: "~ts", description: "\"~ts\"" },
+        peg$c70 = function(s) { return responseContentType(s); },
+        peg$c71 = "~u",
+        peg$c72 = { type: "literal", value: "~u", description: "\"~u\"" },
+        peg$c73 = function(s) { return url(s); },
+        peg$c74 = { type: "other", description: "integer" },
+        peg$c75 = null,
+        peg$c76 = /^['"]/,
+        peg$c77 = { type: "class", value: "['\"]", description: "['\"]" },
+        peg$c78 = /^[0-9]/,
+        peg$c79 = { type: "class", value: "[0-9]", description: "[0-9]" },
+        peg$c80 = function(digits) { return parseInt(digits.join(""), 10); },
+        peg$c81 = { type: "other", description: "string" },
+        peg$c82 = "\"",
+        peg$c83 = { type: "literal", value: "\"", description: "\"\\\"\"" },
+        peg$c84 = function(chars) { return chars.join(""); },
+        peg$c85 = "'",
+        peg$c86 = { type: "literal", value: "'", description: "\"'\"" },
+        peg$c87 = void 0,
+        peg$c88 = /^["\\]/,
+        peg$c89 = { type: "class", value: "[\"\\\\]", description: "[\"\\\\]" },
+        peg$c90 = { type: "any", description: "any character" },
+        peg$c91 = function(char) { return char; },
+        peg$c92 = "\\",
+        peg$c93 = { type: "literal", value: "\\", description: "\"\\\\\"" },
+        peg$c94 = /^['\\]/,
+        peg$c95 = { type: "class", value: "['\\\\]", description: "['\\\\]" },
+        peg$c96 = /^['"\\]/,
+        peg$c97 = { type: "class", value: "['\"\\\\]", description: "['\"\\\\]" },
+        peg$c98 = "n",
+        peg$c99 = { type: "literal", value: "n", description: "\"n\"" },
+        peg$c100 = function() { return "\n"; },
+        peg$c101 = "r",
+        peg$c102 = { type: "literal", value: "r", description: "\"r\"" },
+        peg$c103 = function() { return "\r"; },
+        peg$c104 = "t",
+        peg$c105 = { type: "literal", value: "t", description: "\"t\"" },
+        peg$c106 = function() { return "\t"; },
+
+        peg$currPos          = 0,
+        peg$reportedPos      = 0,
+        peg$cachedPos        = 0,
+        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
+        peg$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$reportedPos, peg$currPos);
+    }
+
+    function offset() {
+      return peg$reportedPos;
+    }
+
+    function line() {
+      return peg$computePosDetails(peg$reportedPos).line;
+    }
+
+    function column() {
+      return peg$computePosDetails(peg$reportedPos).column;
+    }
+
+    function expected(description) {
+      throw peg$buildException(
+        null,
+        [{ type: "other", description: description }],
+        peg$reportedPos
+      );
+    }
+
+    function error(message) {
+      throw peg$buildException(message, null, peg$reportedPos);
+    }
+
+    function peg$computePosDetails(pos) {
+      function advance(details, startPos, endPos) {
+        var p, ch;
+
+        for (p = startPos; p < endPos; p++) {
+          ch = input.charAt(p);
+          if (ch === "\n") {
+            if (!details.seenCR) { details.line++; }
+            details.column = 1;
+            details.seenCR = false;
+          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
+            details.line++;
+            details.column = 1;
+            details.seenCR = true;
+          } else {
+            details.column++;
+            details.seenCR = false;
+          }
+        }
+      }
+
+      if (peg$cachedPos !== pos) {
+        if (peg$cachedPos > pos) {
+          peg$cachedPos = 0;
+          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
+        }
+        advance(peg$cachedPosDetails, peg$cachedPos, pos);
+        peg$cachedPos = pos;
+      }
+
+      return peg$cachedPosDetails;
+    }
+
+    function peg$fail(expected) {
+      if (peg$currPos < peg$maxFailPos) { return; }
+
+      if (peg$currPos > peg$maxFailPos) {
+        peg$maxFailPos = peg$currPos;
+        peg$maxFailExpected = [];
+      }
+
+      peg$maxFailExpected.push(expected);
+    }
+
+    function peg$buildException(message, expected, pos) {
+      function cleanupExpected(expected) {
+        var i = 1;
+
+        expected.sort(function(a, b) {
+          if (a.description < b.description) {
+            return -1;
+          } else if (a.description > b.description) {
+            return 1;
+          } else {
+            return 0;
+          }
+        });
+
+        while (i < expected.length) {
+          if (expected[i - 1] === expected[i]) {
+            expected.splice(i, 1);
+          } else {
+            i++;
+          }
+        }
+      }
+
+      function buildMessage(expected, found) {
+        function stringEscape(s) {
+          function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }
+
+          return s
+            .replace(/\\/g,   '\\\\')
+            .replace(/"/g,    '\\"')
+            .replace(/\x08/g, '\\b')
+            .replace(/\t/g,   '\\t')
+            .replace(/\n/g,   '\\n')
+            .replace(/\f/g,   '\\f')
+            .replace(/\r/g,   '\\r')
+            .replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
+            .replace(/[\x10-\x1F\x80-\xFF]/g,    function(ch) { return '\\x'  + hex(ch); })
+            .replace(/[\u0180-\u0FFF]/g,         function(ch) { return '\\u0' + hex(ch); })
+            .replace(/[\u1080-\uFFFF]/g,         function(ch) { return '\\u'  + hex(ch); });
+        }
+
+        var expectedDescs = new Array(expected.length),
+            expectedDesc, foundDesc, i;
+
+        for (i = 0; i < expected.length; i++) {
+          expectedDescs[i] = expected[i].description;
+        }
+
+        expectedDesc = expected.length > 1
+          ? expectedDescs.slice(0, -1).join(", ")
+              + " or "
+              + expectedDescs[expected.length - 1]
+          : expectedDescs[0];
+
+        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
+
+        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
+      }
+
+      var posDetails = peg$computePosDetails(pos),
+          found      = pos < input.length ? input.charAt(pos) : null;
+
+      if (expected !== null) {
+        cleanupExpected(expected);
+      }
+
+      return new SyntaxError(
+        message !== null ? message : buildMessage(expected, found),
+        expected,
+        found,
+        pos,
+        posDetails.line,
+        posDetails.column
+      );
+    }
+
+    function peg$parsestart() {
+      var s0, s1, s2, s3;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      s1 = peg$parse__();
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parseOrExpr();
+        if (s2 !== peg$FAILED) {
+          s3 = peg$parse__();
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c2(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        s1 = [];
+        if (s1 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c4();
+        }
+        s0 = s1;
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c0); }
+      }
+
+      return s0;
+    }
+
+    function peg$parsews() {
+      var s0, s1;
+
+      peg$silentFails++;
+      if (peg$c6.test(input.charAt(peg$currPos))) {
+        s0 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s0 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c7); }
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c5); }
+      }
+
+      return s0;
+    }
+
+    function peg$parsecc() {
+      var s0, s1;
+
+      peg$silentFails++;
+      if (peg$c9.test(input.charAt(peg$currPos))) {
+        s0 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s0 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c10); }
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c8); }
+      }
+
+      return s0;
+    }
+
+    function peg$parse__() {
+      var s0, s1;
+
+      peg$silentFails++;
+      s0 = [];
+      s1 = peg$parsews();
+      while (s1 !== peg$FAILED) {
+        s0.push(s1);
+        s1 = peg$parsews();
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c11); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseOrExpr() {
+      var s0, s1, s2, s3, s4, s5;
+
+      s0 = peg$currPos;
+      s1 = peg$parseAndExpr();
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parse__();
+        if (s2 !== peg$FAILED) {
+          if (input.charCodeAt(peg$currPos) === 124) {
+            s3 = peg$c12;
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c13); }
+          }
+          if (s3 !== peg$FAILED) {
+            s4 = peg$parse__();
+            if (s4 !== peg$FAILED) {
+              s5 = peg$parseOrExpr();
+              if (s5 !== peg$FAILED) {
+                peg$reportedPos = s0;
+                s1 = peg$c14(s1, s5);
+                s0 = s1;
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$parseAndExpr();
+      }
+
+      return s0;
+    }
+
+    function peg$parseAndExpr() {
+      var s0, s1, s2, s3, s4, s5;
+
+      s0 = peg$currPos;
+      s1 = peg$parseNotExpr();
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parse__();
+        if (s2 !== peg$FAILED) {
+          if (input.charCodeAt(peg$currPos) === 38) {
+            s3 = peg$c15;
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c16); }
+          }
+          if (s3 !== peg$FAILED) {
+            s4 = peg$parse__();
+            if (s4 !== peg$FAILED) {
+              s5 = peg$parseAndExpr();
+              if (s5 !== peg$FAILED) {
+                peg$reportedPos = s0;
+                s1 = peg$c17(s1, s5);
+                s0 = s1;
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        s1 = peg$parseNotExpr();
+        if (s1 !== peg$FAILED) {
+          s2 = [];
+          s3 = peg$parsews();
+          if (s3 !== peg$FAILED) {
+            while (s3 !== peg$FAILED) {
+              s2.push(s3);
+              s3 = peg$parsews();
+            }
+          } else {
+            s2 = peg$c1;
+          }
+          if (s2 !== peg$FAILED) {
+            s3 = peg$parseAndExpr();
+            if (s3 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c17(s1, s3);
+              s0 = s1;
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+        if (s0 === peg$FAILED) {
+          s0 = peg$parseNotExpr();
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parseNotExpr() {
+      var s0, s1, s2, s3;
+
+      s0 = peg$currPos;
+      if (input.charCodeAt(peg$currPos) === 33) {
+        s1 = peg$c18;
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c19); }
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parse__();
+        if (s2 !== peg$FAILED) {
+          s3 = peg$parseNotExpr();
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c20(s3);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$parseBindingExpr();
+      }
+
+      return s0;
+    }
+
+    function peg$parseBindingExpr() {
+      var s0, s1, s2, s3, s4, s5;
+
+      s0 = peg$currPos;
+      if (input.charCodeAt(peg$currPos) === 40) {
+        s1 = peg$c21;
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c22); }
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = peg$parse__();
+        if (s2 !== peg$FAILED) {
+          s3 = peg$parseOrExpr();
+          if (s3 !== peg$FAILED) {
+            s4 = peg$parse__();
+            if (s4 !== peg$FAILED) {
+              if (input.charCodeAt(peg$currPos) === 41) {
+                s5 = peg$c23;
+                peg$currPos++;
+              } else {
+                s5 = peg$FAILED;
+                if (peg$silentFails === 0) { peg$fail(peg$c24); }
+              }
+              if (s5 !== peg$FAILED) {
+                peg$reportedPos = s0;
+                s1 = peg$c25(s3);
+                s0 = s1;
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$parseExpr();
+      }
+
+      return s0;
+    }
+
+    function peg$parseExpr() {
+      var s0;
+
+      s0 = peg$parseNullaryExpr();
+      if (s0 === peg$FAILED) {
+        s0 = peg$parseUnaryExpr();
+      }
+
+      return s0;
+    }
+
+    function peg$parseNullaryExpr() {
+      var s0, s1;
+
+      s0 = peg$parseBooleanLiteral();
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        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$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c28();
+        }
+        s0 = s1;
+        if (s0 === peg$FAILED) {
+          s0 = peg$currPos;
+          if (input.substr(peg$currPos, 2) === peg$c29) {
+            s1 = peg$c29;
+            peg$currPos += 2;
+          } else {
+            s1 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c30); }
+          }
+          if (s1 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c31();
+          }
+          s0 = s1;
+          if (s0 === peg$FAILED) {
+            s0 = peg$currPos;
+            if (input.substr(peg$currPos, 2) === peg$c32) {
+              s1 = peg$c32;
+              peg$currPos += 2;
+            } else {
+              s1 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c33); }
+            }
+            if (s1 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c34();
+            }
+            s0 = s1;
+            if (s0 === peg$FAILED) {
+              s0 = peg$currPos;
+              if (input.substr(peg$currPos, 2) === peg$c35) {
+                s1 = peg$c35;
+                peg$currPos += 2;
+              } else {
+                s1 = peg$FAILED;
+                if (peg$silentFails === 0) { peg$fail(peg$c36); }
+              }
+              if (s1 !== peg$FAILED) {
+                peg$reportedPos = s0;
+                s1 = peg$c37();
+              }
+              s0 = s1;
+            }
+          }
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parseBooleanLiteral() {
+      var s0, s1;
+
+      s0 = peg$currPos;
+      if (input.substr(peg$currPos, 4) === peg$c38) {
+        s1 = peg$c38;
+        peg$currPos += 4;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c39); }
+      }
+      if (s1 !== peg$FAILED) {
+        peg$reportedPos = s0;
+        s1 = peg$c40();
+      }
+      s0 = s1;
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.substr(peg$currPos, 5) === peg$c41) {
+          s1 = peg$c41;
+          peg$currPos += 5;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c42); }
+        }
+        if (s1 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c43();
+        }
+        s0 = s1;
+      }
+
+      return s0;
+    }
+
+    function peg$parseUnaryExpr() {
+      var s0, s1, s2, s3;
+
+      s0 = peg$currPos;
+      if (input.substr(peg$currPos, 2) === peg$c44) {
+        s1 = peg$c44;
+        peg$currPos += 2;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c45); }
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = [];
+        s3 = peg$parsews();
+        if (s3 !== peg$FAILED) {
+          while (s3 !== peg$FAILED) {
+            s2.push(s3);
+            s3 = peg$parsews();
+          }
+        } else {
+          s2 = peg$c1;
+        }
+        if (s2 !== peg$FAILED) {
+          s3 = peg$parseIntegerLiteral();
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c46(s3);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.substr(peg$currPos, 2) === peg$c47) {
+          s1 = peg$c47;
+          peg$currPos += 2;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c48); }
+        }
+        if (s1 !== peg$FAILED) {
+          s2 = [];
+          s3 = peg$parsews();
+          if (s3 !== peg$FAILED) {
+            while (s3 !== peg$FAILED) {
+              s2.push(s3);
+              s3 = peg$parsews();
+            }
+          } else {
+            s2 = peg$c1;
+          }
+          if (s2 !== peg$FAILED) {
+            s3 = peg$parseStringLiteral();
+            if (s3 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c49(s3);
+              s0 = s1;
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+        if (s0 === peg$FAILED) {
+          s0 = peg$currPos;
+          if (input.substr(peg$currPos, 2) === peg$c50) {
+            s1 = peg$c50;
+            peg$currPos += 2;
+          } else {
+            s1 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c51); }
+          }
+          if (s1 !== peg$FAILED) {
+            s2 = [];
+            s3 = peg$parsews();
+            if (s3 !== peg$FAILED) {
+              while (s3 !== peg$FAILED) {
+                s2.push(s3);
+                s3 = peg$parsews();
+              }
+            } else {
+              s2 = peg$c1;
+            }
+            if (s2 !== peg$FAILED) {
+              s3 = peg$parseStringLiteral();
+              if (s3 !== peg$FAILED) {
+                peg$reportedPos = s0;
+                s1 = peg$c52(s3);
+                s0 = s1;
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+          if (s0 === peg$FAILED) {
+            s0 = peg$currPos;
+            if (input.substr(peg$currPos, 3) === peg$c53) {
+              s1 = peg$c53;
+              peg$currPos += 3;
+            } else {
+              s1 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c54); }
+            }
+            if (s1 !== peg$FAILED) {
+              s2 = [];
+              s3 = peg$parsews();
+              if (s3 !== peg$FAILED) {
+                while (s3 !== peg$FAILED) {
+                  s2.push(s3);
+                  s3 = peg$parsews();
+                }
+              } else {
+                s2 = peg$c1;
+              }
+              if (s2 !== peg$FAILED) {
+                s3 = peg$parseStringLiteral();
+                if (s3 !== peg$FAILED) {
+                  peg$reportedPos = s0;
+                  s1 = peg$c55(s3);
+                  s0 = s1;
+                } else {
+                  peg$currPos = s0;
+                  s0 = peg$c1;
+                }
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+            if (s0 === peg$FAILED) {
+              s0 = peg$currPos;
+              if (input.substr(peg$currPos, 3) === peg$c56) {
+                s1 = peg$c56;
+                peg$currPos += 3;
+              } else {
+                s1 = peg$FAILED;
+                if (peg$silentFails === 0) { peg$fail(peg$c57); }
+              }
+              if (s1 !== peg$FAILED) {
+                s2 = [];
+                s3 = peg$parsews();
+                if (s3 !== peg$FAILED) {
+                  while (s3 !== peg$FAILED) {
+                    s2.push(s3);
+                    s3 = peg$parsews();
+                  }
+                } else {
+                  s2 = peg$c1;
+                }
+                if (s2 !== peg$FAILED) {
+                  s3 = peg$parseStringLiteral();
+                  if (s3 !== peg$FAILED) {
+                    peg$reportedPos = s0;
+                    s1 = peg$c58(s3);
+                    s0 = s1;
+                  } else {
+                    peg$currPos = s0;
+                    s0 = peg$c1;
+                  }
+                } else {
+                  peg$currPos = s0;
+                  s0 = peg$c1;
+                }
+              } else {
+                peg$currPos = s0;
+                s0 = peg$c1;
+              }
+              if (s0 === peg$FAILED) {
+                s0 = peg$currPos;
+                if (input.substr(peg$currPos, 2) === peg$c59) {
+                  s1 = peg$c59;
+                  peg$currPos += 2;
+                } else {
+                  s1 = peg$FAILED;
+                  if (peg$silentFails === 0) { peg$fail(peg$c60); }
+                }
+                if (s1 !== peg$FAILED) {
+                  s2 = [];
+                  s3 = peg$parsews();
+                  if (s3 !== peg$FAILED) {
+                    while (s3 !== peg$FAILED) {
+                      s2.push(s3);
+                      s3 = peg$parsews();
+                    }
+                  } else {
+                    s2 = peg$c1;
+                  }
+                  if (s2 !== peg$FAILED) {
+                    s3 = peg$parseStringLiteral();
+                    if (s3 !== peg$FAILED) {
+                      peg$reportedPos = s0;
+                      s1 = peg$c61(s3);
+                      s0 = s1;
+                    } else {
+                      peg$currPos = s0;
+                      s0 = peg$c1;
+                    }
+                  } else {
+                    peg$currPos = s0;
+                    s0 = peg$c1;
+                  }
+                } else {
+                  peg$currPos = s0;
+                  s0 = peg$c1;
+                }
+                if (s0 === peg$FAILED) {
+                  s0 = peg$currPos;
+                  if (input.substr(peg$currPos, 2) === peg$c62) {
+                    s1 = peg$c62;
+                    peg$currPos += 2;
+                  } else {
+                    s1 = peg$FAILED;
+                    if (peg$silentFails === 0) { peg$fail(peg$c63); }
+                  }
+                  if (s1 !== peg$FAILED) {
+                    s2 = [];
+                    s3 = peg$parsews();
+                    if (s3 !== peg$FAILED) {
+                      while (s3 !== peg$FAILED) {
+                        s2.push(s3);
+                        s3 = peg$parsews();
+                      }
+                    } else {
+                      s2 = peg$c1;
+                    }
+                    if (s2 !== peg$FAILED) {
+                      s3 = peg$parseStringLiteral();
+                      if (s3 !== peg$FAILED) {
+                        peg$reportedPos = s0;
+                        s1 = peg$c64(s3);
+                        s0 = s1;
+                      } else {
+                        peg$currPos = s0;
+                        s0 = peg$c1;
+                      }
+                    } else {
+                      peg$currPos = s0;
+                      s0 = peg$c1;
+                    }
+                  } else {
+                    peg$currPos = s0;
+                    s0 = peg$c1;
+                  }
+                  if (s0 === peg$FAILED) {
+                    s0 = peg$currPos;
+                    if (input.substr(peg$currPos, 3) === peg$c65) {
+                      s1 = peg$c65;
+                      peg$currPos += 3;
+                    } else {
+                      s1 = peg$FAILED;
+                      if (peg$silentFails === 0) { peg$fail(peg$c66); }
+                    }
+                    if (s1 !== peg$FAILED) {
+                      s2 = [];
+                      s3 = peg$parsews();
+                      if (s3 !== peg$FAILED) {
+                        while (s3 !== peg$FAILED) {
+                          s2.push(s3);
+                          s3 = peg$parsews();
+                        }
+                      } else {
+                        s2 = peg$c1;
+                      }
+                      if (s2 !== peg$FAILED) {
+                        s3 = peg$parseStringLiteral();
+                        if (s3 !== peg$FAILED) {
+                          peg$reportedPos = s0;
+                          s1 = peg$c67(s3);
+                          s0 = s1;
+                        } else {
+                          peg$currPos = s0;
+                          s0 = peg$c1;
+                        }
+                      } else {
+                        peg$currPos = s0;
+                        s0 = peg$c1;
+                      }
+                    } else {
+                      peg$currPos = s0;
+                      s0 = peg$c1;
+                    }
+                    if (s0 === peg$FAILED) {
+                      s0 = peg$currPos;
+                      if (input.substr(peg$currPos, 3) === peg$c68) {
+                        s1 = peg$c68;
+                        peg$currPos += 3;
+                      } else {
+                        s1 = peg$FAILED;
+                        if (peg$silentFails === 0) { peg$fail(peg$c69); }
+                      }
+                      if (s1 !== peg$FAILED) {
+                        s2 = [];
+                        s3 = peg$parsews();
+                        if (s3 !== peg$FAILED) {
+                          while (s3 !== peg$FAILED) {
+                            s2.push(s3);
+                            s3 = peg$parsews();
+                          }
+                        } else {
+                          s2 = peg$c1;
+                        }
+                        if (s2 !== peg$FAILED) {
+                          s3 = peg$parseStringLiteral();
+                          if (s3 !== peg$FAILED) {
+                            peg$reportedPos = s0;
+                            s1 = peg$c70(s3);
+                            s0 = s1;
+                          } else {
+                            peg$currPos = s0;
+                            s0 = peg$c1;
+                          }
+                        } else {
+                          peg$currPos = s0;
+                          s0 = peg$c1;
+                        }
+                      } else {
+                        peg$currPos = s0;
+                        s0 = peg$c1;
+                      }
+                      if (s0 === peg$FAILED) {
+                        s0 = peg$currPos;
+                        if (input.substr(peg$currPos, 2) === peg$c71) {
+                          s1 = peg$c71;
+                          peg$currPos += 2;
+                        } else {
+                          s1 = peg$FAILED;
+                          if (peg$silentFails === 0) { peg$fail(peg$c72); }
+                        }
+                        if (s1 !== peg$FAILED) {
+                          s2 = [];
+                          s3 = peg$parsews();
+                          if (s3 !== peg$FAILED) {
+                            while (s3 !== peg$FAILED) {
+                              s2.push(s3);
+                              s3 = peg$parsews();
+                            }
+                          } else {
+                            s2 = peg$c1;
+                          }
+                          if (s2 !== peg$FAILED) {
+                            s3 = peg$parseStringLiteral();
+                            if (s3 !== peg$FAILED) {
+                              peg$reportedPos = s0;
+                              s1 = peg$c73(s3);
+                              s0 = s1;
+                            } else {
+                              peg$currPos = s0;
+                              s0 = peg$c1;
+                            }
+                          } else {
+                            peg$currPos = s0;
+                            s0 = peg$c1;
+                          }
+                        } else {
+                          peg$currPos = s0;
+                          s0 = peg$c1;
+                        }
+                        if (s0 === peg$FAILED) {
+                          s0 = peg$currPos;
+                          s1 = peg$parseStringLiteral();
+                          if (s1 !== peg$FAILED) {
+                            peg$reportedPos = s0;
+                            s1 = peg$c73(s1);
+                          }
+                          s0 = s1;
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parseIntegerLiteral() {
+      var s0, s1, s2, s3;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      if (peg$c76.test(input.charAt(peg$currPos))) {
+        s1 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c77); }
+      }
+      if (s1 === peg$FAILED) {
+        s1 = peg$c75;
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = [];
+        if (peg$c78.test(input.charAt(peg$currPos))) {
+          s3 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s3 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c79); }
+        }
+        if (s3 !== peg$FAILED) {
+          while (s3 !== peg$FAILED) {
+            s2.push(s3);
+            if (peg$c78.test(input.charAt(peg$currPos))) {
+              s3 = input.charAt(peg$currPos);
+              peg$currPos++;
+            } else {
+              s3 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c79); }
+            }
+          }
+        } else {
+          s2 = peg$c1;
+        }
+        if (s2 !== peg$FAILED) {
+          if (peg$c76.test(input.charAt(peg$currPos))) {
+            s3 = input.charAt(peg$currPos);
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c77); }
+          }
+          if (s3 === peg$FAILED) {
+            s3 = peg$c75;
+          }
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c80(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c74); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseStringLiteral() {
+      var s0, s1, s2, s3;
+
+      peg$silentFails++;
+      s0 = peg$currPos;
+      if (input.charCodeAt(peg$currPos) === 34) {
+        s1 = peg$c82;
+        peg$currPos++;
+      } else {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c83); }
+      }
+      if (s1 !== peg$FAILED) {
+        s2 = [];
+        s3 = peg$parseDoubleStringChar();
+        while (s3 !== peg$FAILED) {
+          s2.push(s3);
+          s3 = peg$parseDoubleStringChar();
+        }
+        if (s2 !== peg$FAILED) {
+          if (input.charCodeAt(peg$currPos) === 34) {
+            s3 = peg$c82;
+            peg$currPos++;
+          } else {
+            s3 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c83); }
+          }
+          if (s3 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c84(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.charCodeAt(peg$currPos) === 39) {
+          s1 = peg$c85;
+          peg$currPos++;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c86); }
+        }
+        if (s1 !== peg$FAILED) {
+          s2 = [];
+          s3 = peg$parseSingleStringChar();
+          while (s3 !== peg$FAILED) {
+            s2.push(s3);
+            s3 = peg$parseSingleStringChar();
+          }
+          if (s2 !== peg$FAILED) {
+            if (input.charCodeAt(peg$currPos) === 39) {
+              s3 = peg$c85;
+              peg$currPos++;
+            } else {
+              s3 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c86); }
+            }
+            if (s3 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c84(s2);
+              s0 = s1;
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+        if (s0 === peg$FAILED) {
+          s0 = peg$currPos;
+          s1 = peg$currPos;
+          peg$silentFails++;
+          s2 = peg$parsecc();
+          peg$silentFails--;
+          if (s2 === peg$FAILED) {
+            s1 = peg$c87;
+          } else {
+            peg$currPos = s1;
+            s1 = peg$c1;
+          }
+          if (s1 !== peg$FAILED) {
+            s2 = [];
+            s3 = peg$parseUnquotedStringChar();
+            if (s3 !== peg$FAILED) {
+              while (s3 !== peg$FAILED) {
+                s2.push(s3);
+                s3 = peg$parseUnquotedStringChar();
+              }
+            } else {
+              s2 = peg$c1;
+            }
+            if (s2 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c84(s2);
+              s0 = s1;
+            } else {
+              peg$currPos = s0;
+              s0 = peg$c1;
+            }
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        }
+      }
+      peg$silentFails--;
+      if (s0 === peg$FAILED) {
+        s1 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c81); }
+      }
+
+      return s0;
+    }
+
+    function peg$parseDoubleStringChar() {
+      var s0, s1, s2;
+
+      s0 = peg$currPos;
+      s1 = peg$currPos;
+      peg$silentFails++;
+      if (peg$c88.test(input.charAt(peg$currPos))) {
+        s2 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c89); }
+      }
+      peg$silentFails--;
+      if (s2 === peg$FAILED) {
+        s1 = peg$c87;
+      } else {
+        peg$currPos = s1;
+        s1 = peg$c1;
+      }
+      if (s1 !== peg$FAILED) {
+        if (input.length > peg$currPos) {
+          s2 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s2 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c90); }
+        }
+        if (s2 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c91(s2);
+          s0 = s1;
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.charCodeAt(peg$currPos) === 92) {
+          s1 = peg$c92;
+          peg$currPos++;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c93); }
+        }
+        if (s1 !== peg$FAILED) {
+          s2 = peg$parseEscapeSequence();
+          if (s2 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c91(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parseSingleStringChar() {
+      var s0, s1, s2;
+
+      s0 = peg$currPos;
+      s1 = peg$currPos;
+      peg$silentFails++;
+      if (peg$c94.test(input.charAt(peg$currPos))) {
+        s2 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c95); }
+      }
+      peg$silentFails--;
+      if (s2 === peg$FAILED) {
+        s1 = peg$c87;
+      } else {
+        peg$currPos = s1;
+        s1 = peg$c1;
+      }
+      if (s1 !== peg$FAILED) {
+        if (input.length > peg$currPos) {
+          s2 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s2 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c90); }
+        }
+        if (s2 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c91(s2);
+          s0 = s1;
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.charCodeAt(peg$currPos) === 92) {
+          s1 = peg$c92;
+          peg$currPos++;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c93); }
+        }
+        if (s1 !== peg$FAILED) {
+          s2 = peg$parseEscapeSequence();
+          if (s2 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c91(s2);
+            s0 = s1;
+          } else {
+            peg$currPos = s0;
+            s0 = peg$c1;
+          }
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      }
+
+      return s0;
+    }
+
+    function peg$parseUnquotedStringChar() {
+      var s0, s1, s2;
+
+      s0 = peg$currPos;
+      s1 = peg$currPos;
+      peg$silentFails++;
+      s2 = peg$parsews();
+      peg$silentFails--;
+      if (s2 === peg$FAILED) {
+        s1 = peg$c87;
+      } else {
+        peg$currPos = s1;
+        s1 = peg$c1;
+      }
+      if (s1 !== peg$FAILED) {
+        if (input.length > peg$currPos) {
+          s2 = input.charAt(peg$currPos);
+          peg$currPos++;
+        } else {
+          s2 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c90); }
+        }
+        if (s2 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c91(s2);
+          s0 = s1;
+        } else {
+          peg$currPos = s0;
+          s0 = peg$c1;
+        }
+      } else {
+        peg$currPos = s0;
+        s0 = peg$c1;
+      }
+
+      return s0;
+    }
+
+    function peg$parseEscapeSequence() {
+      var s0, s1;
+
+      if (peg$c96.test(input.charAt(peg$currPos))) {
+        s0 = input.charAt(peg$currPos);
+        peg$currPos++;
+      } else {
+        s0 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$c97); }
+      }
+      if (s0 === peg$FAILED) {
+        s0 = peg$currPos;
+        if (input.charCodeAt(peg$currPos) === 110) {
+          s1 = peg$c98;
+          peg$currPos++;
+        } else {
+          s1 = peg$FAILED;
+          if (peg$silentFails === 0) { peg$fail(peg$c99); }
+        }
+        if (s1 !== peg$FAILED) {
+          peg$reportedPos = s0;
+          s1 = peg$c100();
+        }
+        s0 = s1;
+        if (s0 === peg$FAILED) {
+          s0 = peg$currPos;
+          if (input.charCodeAt(peg$currPos) === 114) {
+            s1 = peg$c101;
+            peg$currPos++;
+          } else {
+            s1 = peg$FAILED;
+            if (peg$silentFails === 0) { peg$fail(peg$c102); }
+          }
+          if (s1 !== peg$FAILED) {
+            peg$reportedPos = s0;
+            s1 = peg$c103();
+          }
+          s0 = s1;
+          if (s0 === peg$FAILED) {
+            s0 = peg$currPos;
+            if (input.charCodeAt(peg$currPos) === 116) {
+              s1 = peg$c104;
+              peg$currPos++;
+            } else {
+              s1 = peg$FAILED;
+              if (peg$silentFails === 0) { peg$fail(peg$c105); }
+            }
+            if (s1 !== peg$FAILED) {
+              peg$reportedPos = s0;
+              s1 = peg$c106();
+            }
+            s0 = s1;
+          }
+        }
+      }
+
+      return s0;
+    }
+
+
+    var flowutils = require("../flow/utils.js");
+
+    function or(first, second) {
+        // Add explicit function names to ease debugging.
+        function orFilter() {
+            return first.apply(this, arguments) || second.apply(this, arguments);
+        }
+        orFilter.desc = first.desc + " or " + second.desc;
+        return orFilter;
+    }
+    function and(first, second) {
+        function andFilter() {
+            return first.apply(this, arguments) && second.apply(this, arguments);
+        }
+        andFilter.desc = first.desc + " and " + second.desc;
+        return andFilter;
+    }
+    function not(expr) {
+        function notFilter() {
+            return !expr.apply(this, arguments);
+        }
+        notFilter.desc = "not " + expr.desc;
+        return notFilter;
+    }
+    function binding(expr) {
+        function bindingFilter() {
+            return expr.apply(this, arguments);
+        }
+        bindingFilter.desc = "(" + expr.desc + ")";
+        return bindingFilter;
+    }
+    function trueFilter(flow) {
+        return true;
+    }
+    trueFilter.desc = "true";
+    function falseFilter(flow) {
+        return false;
+    }
+    falseFilter.desc = "false";
+
+    var ASSET_TYPES = [
+        new RegExp("text/javascript"),
+        new RegExp("application/x-javascript"),
+        new RegExp("application/javascript"),
+        new RegExp("text/css"),
+        new RegExp("image/.*"),
+        new RegExp("application/x-shockwave-flash")
+    ];
+    function assetFilter(flow) {
+        if (flow.response) {
+            var ct = flowutils.ResponseUtils.getContentType(flow.response);
+            var i = ASSET_TYPES.length;
+            while (i--) {
+                if (ASSET_TYPES[i].test(ct)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+    assetFilter.desc = "is asset";
+    function responseCode(code){
+        function responseCodeFilter(flow){
+            return flow.response && flow.response.status_code === code;
+        }
+        responseCodeFilter.desc = "resp. code is " + code;
+        return responseCodeFilter;
+    }
+    function domain(regex){
+        regex = new RegExp(regex, "i");
+        function domainFilter(flow){
+            return flow.request && regex.test(flow.request.host);
+        }
+        domainFilter.desc = "domain matches " + regex;
+        return domainFilter;
+    }
+    function errorFilter(flow){
+        return !!flow.error;
+    }
+    errorFilter.desc = "has error";
+    function header(regex){
+        regex = new RegExp(regex, "i");
+        function headerFilter(flow){
+            return (
+                (flow.request && flowutils.RequestUtils.match_header(flow.request, regex))
+                ||
+                (flow.response && flowutils.ResponseUtils.match_header(flow.response, regex))
+            );
+        }
+        headerFilter.desc = "header matches " + regex;
+        return headerFilter;
+    }
+    function requestHeader(regex){
+        regex = new RegExp(regex, "i");
+        function requestHeaderFilter(flow){
+            return (flow.request && flowutils.RequestUtils.match_header(flow.request, regex));
+        }
+        requestHeaderFilter.desc = "req. header matches " + regex;
+        return requestHeaderFilter;
+    }
+    function responseHeader(regex){
+        regex = new RegExp(regex, "i");
+        function responseHeaderFilter(flow){
+            return (flow.response && flowutils.ResponseUtils.match_header(flow.response, regex));
+        }
+        responseHeaderFilter.desc = "resp. header matches " + regex;
+        return responseHeaderFilter;
+    }
+    function method(regex){
+        regex = new RegExp(regex, "i");
+        function methodFilter(flow){
+            return flow.request && regex.test(flow.request.method);
+        }
+        methodFilter.desc = "method matches " + regex;
+        return methodFilter;
+    }
+    function noResponseFilter(flow){
+        return flow.request && !flow.response;
+    }
+    noResponseFilter.desc = "has no response";
+    function responseFilter(flow){
+        return !!flow.response;
+    }
+    responseFilter.desc = "has response";
+
+    function contentType(regex){
+        regex = new RegExp(regex, "i");
+        function contentTypeFilter(flow){
+            return (
+                (flow.request && regex.test(flowutils.RequestUtils.getContentType(flow.request)))
+                ||
+                (flow.response && regex.test(flowutils.ResponseUtils.getContentType(flow.response)))
+            );
+        }
+        contentTypeFilter.desc = "content type matches " + regex;
+        return contentTypeFilter;
+    }
+    function requestContentType(regex){
+        regex = new RegExp(regex, "i");
+        function requestContentTypeFilter(flow){
+            return flow.request && regex.test(flowutils.RequestUtils.getContentType(flow.request));
+        }
+        requestContentTypeFilter.desc = "req. content type matches " + regex;
+        return requestContentTypeFilter;
+    }
+    function responseContentType(regex){
+        regex = new RegExp(regex, "i");
+        function responseContentTypeFilter(flow){
+            return flow.response && regex.test(flowutils.ResponseUtils.getContentType(flow.response));
+        }
+        responseContentTypeFilter.desc = "resp. content type matches " + regex;
+        return responseContentTypeFilter;
+    }
+    function url(regex){
+        regex = new RegExp(regex, "i");
+        function urlFilter(flow){
+            return flow.request && regex.test(flowutils.RequestUtils.pretty_url(flow.request));
+        }
+        urlFilter.desc = "url matches " + regex;
+        return urlFilter;
+    }
+
+
+    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$fail({ type: "end", description: "end of input" });
+      }
+
+      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
+    }
+  }
+
+  return {
+    SyntaxError: SyntaxError,
+    parse:       parse
+  };
+})();
\ No newline at end of file
diff --git a/web/src/js/filt/filt.peg b/web/src/js/filt/filt.peg
new file mode 100644
index 00000000..6f9bdac6
--- /dev/null
+++ b/web/src/js/filt/filt.peg
@@ -0,0 +1,249 @@
+// PEG.js filter rules - see http://pegjs.majda.cz/online
+
+{
+var flowutils = require("../flow/utils.js");
+
+function or(first, second) {
+    // Add explicit function names to ease debugging.
+    function orFilter() {
+        return first.apply(this, arguments) || second.apply(this, arguments);
+    }
+    orFilter.desc = first.desc + " or " + second.desc;
+    return orFilter;
+}
+function and(first, second) {
+    function andFilter() {
+        return first.apply(this, arguments) && second.apply(this, arguments);
+    }
+    andFilter.desc = first.desc + " and " + second.desc;
+    return andFilter;
+}
+function not(expr) {
+    function notFilter() {
+        return !expr.apply(this, arguments);
+    }
+    notFilter.desc = "not " + expr.desc;
+    return notFilter;
+}
+function binding(expr) {
+    function bindingFilter() {
+        return expr.apply(this, arguments);
+    }
+    bindingFilter.desc = "(" + expr.desc + ")";
+    return bindingFilter;
+}
+function trueFilter(flow) {
+    return true;
+}
+trueFilter.desc = "true";
+function falseFilter(flow) {
+    return false;
+}
+falseFilter.desc = "false";
+
+var ASSET_TYPES = [
+    new RegExp("text/javascript"),
+    new RegExp("application/x-javascript"),
+    new RegExp("application/javascript"),
+    new RegExp("text/css"),
+    new RegExp("image/.*"),
+    new RegExp("application/x-shockwave-flash")
+];
+function assetFilter(flow) {
+    if (flow.response) {
+        var ct = flowutils.ResponseUtils.getContentType(flow.response);
+        var i = ASSET_TYPES.length;
+        while (i--) {
+            if (ASSET_TYPES[i].test(ct)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+assetFilter.desc = "is asset";
+function responseCode(code){
+    function responseCodeFilter(flow){
+        return flow.response && flow.response.status_code === code;
+    }
+    responseCodeFilter.desc = "resp. code is " + code;
+    return responseCodeFilter;
+}
+function domain(regex){
+    regex = new RegExp(regex, "i");
+    function domainFilter(flow){
+        return flow.request && regex.test(flow.request.host);
+    }
+    domainFilter.desc = "domain matches " + regex;
+    return domainFilter;
+}
+function errorFilter(flow){
+    return !!flow.error;
+}
+errorFilter.desc = "has error";
+function header(regex){
+    regex = new RegExp(regex, "i");
+    function headerFilter(flow){
+        return (
+            (flow.request && flowutils.RequestUtils.match_header(flow.request, regex))
+            ||
+            (flow.response && flowutils.ResponseUtils.match_header(flow.response, regex))
+        );
+    }
+    headerFilter.desc = "header matches " + regex;
+    return headerFilter;
+}
+function requestHeader(regex){
+    regex = new RegExp(regex, "i");
+    function requestHeaderFilter(flow){
+        return (flow.request && flowutils.RequestUtils.match_header(flow.request, regex));
+    }
+    requestHeaderFilter.desc = "req. header matches " + regex;
+    return requestHeaderFilter;
+}
+function responseHeader(regex){
+    regex = new RegExp(regex, "i");
+    function responseHeaderFilter(flow){
+        return (flow.response && flowutils.ResponseUtils.match_header(flow.response, regex));
+    }
+    responseHeaderFilter.desc = "resp. header matches " + regex;
+    return responseHeaderFilter;
+}
+function method(regex){
+    regex = new RegExp(regex, "i");
+    function methodFilter(flow){
+        return flow.request && regex.test(flow.request.method);
+    }
+    methodFilter.desc = "method matches " + regex;
+    return methodFilter;
+}
+function noResponseFilter(flow){
+    return flow.request && !flow.response;
+}
+noResponseFilter.desc = "has no response";
+function responseFilter(flow){
+    return !!flow.response;
+}
+responseFilter.desc = "has response";
+
+function contentType(regex){
+    regex = new RegExp(regex, "i");
+    function contentTypeFilter(flow){
+        return (
+            (flow.request && regex.test(flowutils.RequestUtils.getContentType(flow.request)))
+            ||
+            (flow.response && regex.test(flowutils.ResponseUtils.getContentType(flow.response)))
+        );
+    }
+    contentTypeFilter.desc = "content type matches " + regex;
+    return contentTypeFilter;
+}
+function requestContentType(regex){
+    regex = new RegExp(regex, "i");
+    function requestContentTypeFilter(flow){
+        return flow.request && regex.test(flowutils.RequestUtils.getContentType(flow.request));
+    }
+    requestContentTypeFilter.desc = "req. content type matches " + regex;
+    return requestContentTypeFilter;
+}
+function responseContentType(regex){
+    regex = new RegExp(regex, "i");
+    function responseContentTypeFilter(flow){
+        return flow.response && regex.test(flowutils.ResponseUtils.getContentType(flow.response));
+    }
+    responseContentTypeFilter.desc = "resp. content type matches " + regex;
+    return responseContentTypeFilter;
+}
+function url(regex){
+    regex = new RegExp(regex, "i");
+    function urlFilter(flow){
+        return flow.request && regex.test(flowutils.RequestUtils.pretty_url(flow.request));
+    }
+    urlFilter.desc = "url matches " + regex;
+    return urlFilter;
+}
+}
+
+start "filter expression"
+  = __ orExpr:OrExpr __ { return orExpr; }
+  / {return trueFilter; }
+
+ws "whitespace" = [ \t\n\r]
+cc "control character" = [|&!()~"]
+__ "optional whitespace" = ws*
+
+OrExpr
+  = first:AndExpr __ "|" __ second:OrExpr 
+    { return or(first, second); }
+  / AndExpr
+
+AndExpr
+  = first:NotExpr __ "&" __ second:AndExpr 
+    { return and(first, second); }
+  / first:NotExpr ws+ second:AndExpr 
+    { return and(first, second); }
+  / NotExpr
+
+NotExpr
+  = "!" __ expr:NotExpr 
+    { return not(expr); }
+  / BindingExpr
+
+BindingExpr
+  = "(" __ expr:OrExpr __ ")" 
+    { return binding(expr); }
+  / Expr
+
+Expr
+  = NullaryExpr
+  / UnaryExpr
+
+NullaryExpr
+  = BooleanLiteral
+  / "~a" { return assetFilter; }
+  / "~e" { return errorFilter; }
+  / "~q" { return noResponseFilter; }
+  / "~s" { return responseFilter; }
+
+
+BooleanLiteral
+  = "true" { return trueFilter; }
+  / "false" { return falseFilter; }
+
+UnaryExpr
+  = "~c"  ws+ s:IntegerLiteral { return responseCode(s); }
+  / "~d"  ws+ s:StringLiteral { return domain(s); }
+  / "~h"  ws+ s:StringLiteral { return header(s); }
+  / "~hq" ws+ s:StringLiteral { return requestHeader(s); }
+  / "~hs" ws+ s:StringLiteral { return responseHeader(s); }
+  / "~m"  ws+ s:StringLiteral { return method(s); }
+  / "~t"  ws+ s:StringLiteral { return contentType(s); }
+  / "~tq" ws+ s:StringLiteral { return requestContentType(s); }
+  / "~ts" ws+ s:StringLiteral { return responseContentType(s); }
+  / "~u"  ws+ s:StringLiteral { return url(s); }
+  / s:StringLiteral { return url(s); }
+
+IntegerLiteral "integer"
+  = ['"]? digits:[0-9]+ ['"]? { return parseInt(digits.join(""), 10); }
+
+StringLiteral "string"
+  = '"' chars:DoubleStringChar* '"' { return chars.join(""); }
+  / "'" chars:SingleStringChar* "'" { return chars.join(""); }
+  / !cc chars:UnquotedStringChar+ { return chars.join(""); }
+
+DoubleStringChar
+  = !["\\] char:. { return char; }
+  / "\\" char:EscapeSequence { return char; }
+
+SingleStringChar
+  = !['\\] char:. { return char; }
+  / "\\" char:EscapeSequence { return char; }
+
+UnquotedStringChar
+  = !ws char:. { return char; }
+
+EscapeSequence
+  = ['"\\]
+  / "n" { return "\n"; }
+  / "r" { return "\r"; }
+  / "t" { return "\t"; }