string.raw changes

es6-shim.js

@@ -74,6 +74,46 @@ var main = function() {
     }
   });
 
+  defineProperties(String, {
+    raw: function() {
+      var callSite = arguments[0];
+      var substitutions =  Array.prototype.slice.call(arguments, 1);
+      /*var cooked = Object(callSite);
+      var rawValue = cooked.raw;
+      var raw =  Object(rawValue);
+      var len = raw.length;
+      var literalsegments = ToUint32(len);*/
+
+      var literalsegments = callSite.length;
+
+      if (literalsegments === 0){return '';}
+
+      var stringElements = [];
+      var nextIndex = 0;
+
+      var nextKey , next, nextSeg, nextSub ;
+      while (nextIndex < literalsegments) {
+          nextKey = nextIndex.toString();
+          next = callSite[nextKey];
+          nextSeg = next.toString();
+
+          stringElements.push(nextSeg);
+
+          if (nextIndex + 1 >= literalsegments || nextIndex >= substitutions.length){
+            break;
+          }
+          next = substitutions[nextKey];
+          nextSub = next.toString();
+          stringElements.push(nextSub);
+
+          nextIndex++;
+
+      }
+
+      return stringElements.join('');
+    }
+  });
+
   defineProperties(String.prototype, {
     // Fast repeat, uses the `Exponentiation by squaring` algorithm.
     repeat: function(times) {

test/string.js

@@ -263,4 +263,17 @@ describe('String', function() {
       expect(str.codePointAt(str.length)).to.be.undefined;
     });
   });
+
+  describe('#raw()', function() {
+    it('test 1', function() {
+      var str = 'The total is 10 ($11 with tax)';
+      var str2 = 'The total is {total} (${total * 1.01} with tax)';
+      expect(String.raw([ "The total is ", " ($", " with tax)" ],10,11)).to.eql(str);
+      expect(String.raw([ "The total is ", " ($", " with tax)" ],'{total}','{total * 1.01}')).to.eql(str2);
+
+    });
+
+  });
+
+
 });