remove unused _opt in favor of code size/readability

src/static/js/Changeset.js

@@ -27,8 +27,6 @@
 
 var AttributePool = require("./AttributePool");
 
-var _opt = null;
-
 /**
  * ==================== General Util Functions =======================
  */
@@ -127,22 +125,13 @@ exports.opIterator = function (opsStr, optStartIndex) {
   function nextRegexMatch() {
     prevIndex = curIndex;
     var result;
-    if (_opt) {
-      result = _opt.nextOpInString(opsStr, curIndex);
-      if (result) {
-        if (result.opcode() == '?') {
-          exports.error("Hit error opcode in op stream");
-        }
-        curIndex = result.lastIndex();
-      }
-    } else {
     regex.lastIndex = curIndex;
     result = regex.exec(opsStr);
     curIndex = regex.lastIndex;
     if (result[0] == '?') {
       exports.error("Hit error opcode in op stream");
     }
-    }
+  
     return result;
   }
   var regexResult = nextRegexMatch();
@@ -150,13 +139,7 @@ exports.opIterator = function (opsStr, optStartIndex) {
 
   function next(optObj) {
     var op = (optObj || obj);
-    if (_opt && regexResult) {
-      op.attribs = regexResult.attribs();
-      op.lines = regexResult.lines();
-      op.chars = regexResult.chars();
-      op.opcode = regexResult.opcode();
-      regexResult = nextRegexMatch();
-    } else if ((!_opt) && regexResult[0]) {
+    if (regexResult[0]) {
       op.attribs = regexResult[1];
       op.lines = exports.parseNum(regexResult[2] || 0);
       op.opcode = regexResult[3];
@@ -169,7 +152,7 @@ exports.opIterator = function (opsStr, optStartIndex) {
   }
 
   function hasNext() {
-    return !!(_opt ? regexResult : regexResult[0]);
+    return !!(regexResult[0]);
   }
 
   function lastIndex() {
@@ -414,35 +397,8 @@ exports.smartOpAssembler = function () {
   };
 };
 
-if (_opt) {
-  exports.mergingOpAssembler = function () {
-    var assem = _opt.mergingOpAssembler();
 
-    function append(op) {
-      assem.append(op.opcode, op.chars, op.lines, op.attribs);
-    }
-
-    function toString() {
-      return assem.toString();
-    }
-
-    function clear() {
-      assem.clear();
-    }
-
-    function endDocument() {
-      assem.endDocument();
-    }
-
-    return {
-      append: append,
-      toString: toString,
-      clear: clear,
-      endDocument: endDocument
-    };
-  };
-} else {
-  exports.mergingOpAssembler = function () {
+exports.mergingOpAssembler = function () {
   // This assembler can be used in production; it efficiently
   // merges consecutive operations that are mergeable, ignores
   // no-ops, and drops final pure "keeps".  It does not re-order
@@ -514,33 +470,11 @@ if (_opt) {
     clear: clear,
     endDocument: endDocument
   };
-  };
-}
+};
 
-if (_opt) {
-  exports.opAssembler = function () {
-    var assem = _opt.opAssembler();
-    // this function allows op to be mutated later (doesn't keep a ref)
 
-    function append(op) {
-      assem.append(op.opcode, op.chars, op.lines, op.attribs);
-    }
 
-    function toString() {
-      return assem.toString();
-    }
-
-    function clear() {
-      assem.clear();
-    }
-    return {
-      append: append,
-      toString: toString,
-      clear: clear
-    };
-  };
-} else {
-  exports.opAssembler = function () {
+exports.opAssembler = function () {
   var pieces = [];
   // this function allows op to be mutated later (doesn't keep a ref)
 
@@ -565,8 +499,7 @@ if (_opt) {
     toString: toString,
     clear: clear
   };
-  };
-}
+};
 
 /**
  * A custom made String Iterator