Merge pull request #2964 from mrcarlberg/compiler_remove_unused

Fixed: Removed unused variables and statements in compiler

Objective-J/ObjJAcornCompiler.js

@@ -719,7 +719,6 @@ var reservedIdentifiers = acorn.makePredicate("self _cmd undefined localStorage
 var wordPrefixOperators = acorn.makePredicate("delete in instanceof new typeof void");
 
 var isLogicalBinary = acorn.makePredicate("LogicalExpression BinaryExpression");
-var isInInstanceof = acorn.makePredicate("in instanceof");
 
 var warningUnusedButSetVariable = {name: "unused-but-set-variable"};
 var warningShadowIvar = {name: "shadow-ivar"};
@@ -1330,7 +1329,6 @@ function compileWithFormat(node, state, visitor) {
     function c(node, st, override) {
         var compiler = st.compiler,
             includeComments = compiler.includeComments,
-            parentNode = st.currentNode(),
             localLastNode = lastNode,
             sameNode = localLastNode === node;
         //console.log(override || node.type);
@@ -2327,8 +2325,7 @@ UpdateExpression: function(node, st, c) {
 },
 BinaryExpression: function(node, st, c, format) {
     var compiler = st.compiler,
-        generate = compiler.generate,
-        operatorType = isInInstanceof(node.operator);
+        generate = compiler.generate;
     (generate && nodePrecedence(node, node.left) ? surroundExpression(c) : c)(node.left, st, "Expression");
     if (generate) {
         var buffer = compiler.jsBuffer;

Objective-J/acorn.js

@@ -386,7 +386,7 @@
 
   // These are used by the preprocess tokenizer.
 
-  var preTokPos, preTokType, preTokVal, preTokStart, preTokEnd;
+  var preTokType, preTokVal, preTokStart, preTokEnd;
   var preLastStart, preLastEnd;
   var preprocessStack;
   var preprocessStackLastItem;
@@ -563,7 +563,7 @@
 
   // Objective-J token types
 
-  var _at = {type: "@"}, _dotdotdot = {type: "..."}, _numberSign = {type: "#"};
+  var _dotdotdot = {type: "..."};
 
   // Operators. These carry several kinds of properties to help the
   // parser use them properly (the presence of these properties is
@@ -965,8 +965,6 @@
           if (firstEndOfFile == null) firstEndOfFile = tokPos;
           // If we are at the end of the input inside a macro continue at last position
           var lastItem = preprocessStack.pop();
-          var saveInputForPrint = input;
-          var saveSourceFileForPrint = sourceFile;
           tokPos = lastItem.end;
           input = lastItem.input;
           inputLen = lastItem.inputLen;
@@ -1531,7 +1529,6 @@
     }
 
     if (allowEndOfLineToken) {
-      var r;
       if (code === 13 || code === 10 || code === 8232 || code === 8233) {
         if (options.locations) {
           ++tokCurLine;
@@ -2239,7 +2236,6 @@
       }
     }
     if (macro) {
-      var macroStart = tokStart;
       var parameters;
       var hasParameters = macro.parameters;
       var nextIsParenL;
@@ -2259,8 +2255,6 @@
       }
       if (!hasParameters || nextIsParenL) {
         // Now we know that we have a matching macro. Get parameters if needed
-        var macroString = macro.macro;
-        //var lastTokPos = tokPos;
         if (nextIsParenL) {
           var variadicName = macro.variadicName;
           var first = true;