avoid many lookups in lexer

kbrsh · May 20, 2017 · c5805ba · c5805ba
1 parent d695684
commit c5805ba
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Showing 3 changed files with 33 additions and 21 deletions.
diff --git a/dist/moon.js b/dist/moon.js
@@ -1064,15 +1064,17 @@
     };
 
     var lexText = function (state) {
+      var current = state.current;
       var input = state.input;
       var len = input.length;
-      var endOfText = input.substring(state.current).search(tagOrCommentStartRE);
+
+      var endOfText = input.substring(current).search(tagOrCommentStartRE);
 
       // Only Text
       if (endOfText === -1) {
         state.tokens.push({
           type: "text",
-          value: input.slice(state.current)
+          value: input.slice(current)
         });
         state.current = len;
         return;
@@ -1084,25 +1086,28 @@
       }
 
       // End of Text Found
-      endOfText += state.current;
+      endOfText += current;
       state.tokens.push({
         type: "text",
-        value: input.slice(state.current, endOfText)
+        value: input.slice(current, endOfText)
       });
       state.current = endOfText;
     };
 
     var lexComment = function (state) {
+      var current = state.current;
       var input = state.input;
       var len = input.length;
-      state.current += 4;
-      var endOfComment = input.indexOf("-->", state.current);
+
+      current += 4;
+
+      var endOfComment = input.indexOf("-->", current);
 
       // Only an unclosed comment
       if (endOfComment === -1) {
         state.tokens.push({
           type: "comment",
-          value: input.slice(state.current)
+          value: input.slice(current)
         });
         state.current = len;
         return;
@@ -1111,25 +1116,26 @@
       // End of Comment Found
       state.tokens.push({
         type: "comment",
-        value: input.slice(state.current, endOfComment)
+        value: input.slice(current, endOfComment)
       });
       state.current = endOfComment + 3;
     };
 
     var lexTag = function (state) {
+      var current = state.current;
       var input = state.input;
       var len = input.length;
 
       // Lex Starting of Tag
-      var isClosingStart = input.charAt(state.current + 1) === "/";
+      var isClosingStart = input.charAt(current + 1) === "/";
       state.current += isClosingStart ? 2 : 1;
 
       // Lex type and attributes
       var tagToken = lexTagType(state);
       lexAttributes(tagToken, state);
 
       // Lex ending tag
-      var isClosingEnd = input.charAt(state.current) === "/";
+      var isClosingEnd = input.charAt(current) === "/";
       state.current += isClosingEnd ? 2 : 1;
 
       // Check if Closing Start