From 2e4fb7b073a82ed4f4f7f77569d633defab417eb Mon Sep 17 00:00:00 2001
From: dhrname <dhrname@users.sourceforge.jp>
Date: Wed, 8 Feb 2017 21:14:42 +0900
Subject: [PATCH] Lighten the setKey method

---
 org/w3c/dom/smil.js | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/org/w3c/dom/smil.js b/org/w3c/dom/smil.js
index 1da1374..76340f1 100644
--- a/org/w3c/dom/smil.js
+++ b/org/w3c/dom/smil.js
@@ -1315,6 +1315,7 @@ base("$calcMode").up("$attribute").mix( {
           this.getAttr("from", null),
           this.getAttr("to", null),
           this.getAttr("by", null) ),
+         toLength = to ? to.length : 0,
          keyTimes = this.getAttr("keyTimes", null),
          keySplines = this.getAttr("keySplines", null),
          keys,
@@ -1330,7 +1331,7 @@ base("$calcMode").up("$attribute").mix( {
         return null;
       }
       /*toオブジェクトはtoとfromで一組となっているのでlengthが加算される*/
-      if (this.isKeyError(keys.length, to.length)) {
+      if (this.isKeyError(keys.length, toLength)) {
         /*keyTimes属性とvalues属性のリストの個数が合致しない場合、アニメーションの効果がない
          * 仕様を参照 SMIL Animation 3.2.3. Animation function calculation modes
          * http://www.w3.org/TR/smil-animation/#AnimFuncCalcMode*/
@@ -1345,7 +1346,7 @@ base("$calcMode").up("$attribute").mix( {
          */
         return null;
       }
-      for (var i=0;i<to.length;++i) {
+      for (var i=0;i<toLength;++i) {
         to[i].keyTime = keys[i+1] - keys[i];
         if (splines) {
           toiKeySplines = this.$from.numList.call( {
@@ -1356,8 +1357,8 @@ base("$calcMode").up("$attribute").mix( {
         }
       }
     } else if (!isDiscrete && to) {
-      var per = 1 / to.length;
-      for (var i=0;i<to.length;++i) {
+      var per = 1 / toLength;
+      for (var i=0;i<toLength;++i) {
         to[i].keyTime = per;
         if (splines) {
           toiKeySplines = this.$from.numList.call( {
@@ -1376,20 +1377,20 @@ base("$calcMode").up("$attribute").mix( {
         if (keys.length && (keys[0] !== 0)) {
           return null;
         }
-        if (this.isKeyError(keys.length, to.length)) {
+        if (this.isKeyError(keys.length, toLength)) {
           return null;
         }
-        for (var i=0;i<to.length;++i) {
+        for (var i=0;i<toLength;++i) {
           to[i].keyTime = keys[i+1] - keys[i];
         }
       } else {
-        var per = 1 / (to.length+1);
-        for (var i=0;i<to.length;++i) {
+        var per = 1 / (toLength+1);
+        for (var i=0;i<toLength;++i) {
           to[i].keyTime = per;
         }
       }
       /*toオブジェクトが足らないので、一つ追加しておく*/
-      to.push( to[to.length-1].up().mix( function(){
+      to.push( to[toLength-1].up().mix( function(){
           if (!keys) {
             return;
           }
-- 
2.11.0