--- a/regexParser/bitVector.cc	Thu Dec 24 18:00:55 2015 +0900
+++ b/regexParser/bitVector.cc	Thu Dec 24 19:14:49 2015 +0900
@@ -3,26 +3,20 @@
 #include <string.h>
 #include "bitVector.h"
 
-BitVectorPtr createBitVector(NodePtr n) {
-    BitVectorPtr bi = allocateBitVector();
-    bitSet(bi,n->nodeNumber);
-    return bi;
+BitVector createBitvector(int state) {
+    unsigned long tmp = 1 << bitSetPosition;
+    BitVector bi1 = (struct BitVector){.bitContainer = tmp};
+    return bi1;
 }
 
-const BitVectorPtr allocateBitVector() {
-    BitVectorPtr bi = (BitVectorPtr)malloc(sizeof(BitVector));
-    bi->bitContainer = 0;
-    return bi;
+BitVector bitSet(BitVector bi, int bitSetPosition) {
+    unsigned long tmp = 1 << bitSetPosition;
+    BitVector bi1 = (struct BitVector){.bitContainer = bi.bitContainer | tmp};
+    return bi1;
 }
 
-void bitSet(BitVectorPtr bi, int bitSetPosition) {
-    unsigned long tmp = 1 << (bitSetPosition % BITBLOCK);
-    bi->bitContainer = bi->bitContainer | tmp;
-    return;
-}
-
-void bitPrint(BitVectorPtr bi) {
-    unsigned long vec = bi->bitContainer;
+void bitPrint(BitVector bi) {
+    unsigned long vec = bi.bitContainer;
     for (int j = 0; j < BITBLOCK; j++) {
         putchar((vec & 1) ? '1':'0');
         vec >>= 1;