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[YACASL2.git] / src / label.c

diff --git a/src/label.c b/src/label.c
index ece8d58..385922d 100644 (file)
--- a/src/label.c
+++ b/src/label.c
@@ -1,11 +1,3 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "cerr.h"
-#include "cmem.h"
-#include "hash.h"
 #include "assemble.h"
 
 /**
@@ -57,26 +49,26 @@ static CERR cerr_label[] = {
 };
 
 HKEY *label_hashkey(const char *value) {
-    HKEY *key;
+    HKEY *key = NULL;
 
     key = malloc_chk(sizeof(HKEY), "label_hashkey");
     key->type = CHARS;
-    key->val.s = strdup_chk(value, "label_hashkey.value");
+    key->val.s = strdup_chk(value, "label_hashkey->value");
     return key;
 }
 
 unsigned labelhash(const char *prog, const char *label)
 {
-    HKEY *keys[2];
-    int i = 0, j;
-    unsigned h;
+    HKEY *keys[2] = {NULL};
+    int i = 0;
+    unsigned h = 0;
 
-    if(*prog != '\0') {
+    if(prog[0]) {
         keys[i++] = label_hashkey(prog);
     }
     keys[i] = label_hashkey(label);
     h = hash(i+1, keys, LABELTABSIZE);
-    for(j = 0; j < i + 1; j++) {
+    for(int j = 0; j < i + 1; j++) {
         FREE(keys[j]->val.s);
         FREE(keys[j]);
     }
@@ -97,12 +89,12 @@ void addcerrlist_label()
 WORD getlabel(const char *prog, const char *label)
 {
     assert(prog != NULL && label != NULL);
-    LABELTAB *p;
-    LABELARRAY *l;
+    LABELTAB *p = NULL;
+    LABELARRAY *l = NULL;
 
     for(p = labels[labelhash(prog, label)]; p != NULL; p = p->next) {
         l = p->label;
-        if((*prog == '\0' || (strcmp(prog, l->prog) == 0)) &&
+        if((!prog[0] || (strcmp(prog, l->prog) == 0)) &&
            strcmp(label, l->label) == 0)
         {
             return l->adr;
@@ -114,9 +106,9 @@ WORD getlabel(const char *prog, const char *label)
 bool addlabel(const char *prog, const char *label, WORD adr)
 {
     assert(label != NULL);
-    LABELTAB *p;
-    LABELARRAY *l;
-    unsigned hashval;
+    LABELTAB *p = NULL;
+    LABELARRAY *l = NULL;
+    unsigned h = 0;
 
     /* 登録されたラベルを検索。すでに登録されている場合はエラー発生 */
     if(getlabel(prog, label) != 0xFFFF) {
@@ -135,28 +127,27 @@ bool addlabel(const char *prog, const char *label, WORD adr)
     /* ラベル数を設定 */
     labelcnt++;
     /* ハッシュ表へ追加 */
-    hashval = labelhash(prog, label);
-    p->next = labels[hashval];
-    labels[hashval] = p;
+    p->next = labels[h = labelhash(prog, label)];
+    labels[h] = p;
     return true;
 }
 
 void printlabel()
 {
-    int i, s = 0;
-    LABELTAB *p;
-    LABELARRAY **l;
+    int s = 0;
+    LABELTAB *p = NULL;
+    LABELARRAY **l = {NULL};
 
     l = calloc_chk(labelcnt, sizeof(LABELARRAY **), "labels");
-    for(i = 0; i < LABELTABSIZE; i++) {
+    for(int i = 0; i < LABELTABSIZE; i++) {
         for(p = labels[i]; p != NULL; p = p->next) {
             assert(p->label != NULL);
             l[s++] = p->label;
         }
     }
     qsort(l, s, sizeof(*l), compare_adr);
-    for(i = 0; i < s; i++) {
-        if(*(l[i]->prog) != '\0') {
+    for(int i = 0; i < s; i++) {
+        if(l[i]->prog[0]) {
             fprintf(stdout, "%s.", l[i]->prog);
         }
         fprintf(stdout, "%s ---> #%04X\n", l[i]->label, l[i]->adr);
@@ -167,7 +158,8 @@ void printlabel()
 void freelabel()
 {
     int i;
-    LABELTAB *p, *q;
+    LABELTAB *p = NULL;
+    LABELTAB *q = NULL;
 
     for(i = 0; i < LABELTABSIZE; i++) {
         for(p = labels[i]; p != NULL; p = q) {
@@ -177,5 +169,6 @@ void freelabel()
             FREE(p->label);
             FREE(p);
         }
+        labels[i] = NULL;
     }
 }