ラベルが空のとき、変数にNULLではなく'\0'を設定するよう変更

[YACASL2.git] / src / assemble.c

diff --git a/src/assemble.c b/src/assemble.c
index c53ad5b..23ce8ac 100644 (file)
--- a/src/assemble.c
+++ b/src/assemble.c
@@ -82,7 +82,7 @@ static CMD ascmd[] = {
     { "END", assemble_end },
     { "DS", assemble_ds },
     { "DC", assemble_dc },
-    { NULL, NULL }
+    { "", NULL }
 };
 
 /**
@@ -93,7 +93,7 @@ static CMD macrocmd[] = {
     { "IN", assemble_in },
     { "RPUSH", assemble_rpush },
     { "RPOP", assemble_rpop },
-    { NULL, NULL }
+    { "", NULL }
 };
 
 /**
@@ -144,7 +144,6 @@ WORD getadr(const char *prog, const char *str, PASS pass)
  */
 WORD getgr(const char *str, bool is_x)
 {
-    assert(str != NULL);
     WORD r;
 
     /*  "GR[0-7]" 以外の文字列では、0xFFFFを返して終了 */
@@ -156,7 +155,7 @@ WORD getgr(const char *str, bool is_x)
     r = (WORD)(*(str+2) - '0');
     /* GR0は指標レジスタとして用いることができない */
     if(is_x == true && r == 0x0) {
-        setcerr(120, NULL);    /* GR0 in operand x */
+        setcerr(120, "");    /* GR0 in operand x */
         return 0x0;
     }
     return r;
@@ -255,11 +254,11 @@ void writedc(const char *str, PASS pass)
 void assemble_start(const CMDLINE *cmdl, PASS pass)
 {
     if(cmdl->opd->opdc > 1) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
-    if(cmdl->label == NULL) {
-        setcerr(107, NULL);    /* no label in START */
+    if(cmdl->label == '\0') {
+        setcerr(107, "");    /* no label in START */
         return;
     }
     /* プログラム名の設定 */
@@ -279,7 +278,7 @@ void assemble_start(const CMDLINE *cmdl, PASS pass)
 void assemble_end(const CMDLINE *cmdl, PASS pass)
 {
     if(cmdl->opd->opdc > 0) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     /* 1回目のアセンブルの場合は、リテラル領域開始アドレスを設定 */
@@ -301,7 +300,7 @@ void assemble_ds(const CMDLINE *cmdl, PASS pass)
 {
     int i;
     if(cmdl->opd->opdc != 1) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     for(i = 0; i < atoi(cmdl->opd->opdv[0]); i++) {
@@ -320,7 +319,7 @@ void assemble_dc(const CMDLINE *cmdl, PASS pass)
 {
     int i;
     if(cmdl->opd->opdc == 0 || cmdl->opd->opdc >= OPDSIZE) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     for(i = 0; i < cmdl->opd->opdc; i++) {
@@ -348,7 +347,7 @@ void assemble_in(const CMDLINE *cmdl, PASS pass)
 {
     char *line = malloc_chk(LINESIZE + 1, "assemble_in.line");
     if(cmdl->opd->opdc == 0 || cmdl->opd->opdc > 2) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     assembleline("    PUSH 0,GR1", pass);
@@ -383,7 +382,7 @@ void assemble_out(const CMDLINE *cmdl, PASS pass)
 {
     char *line = malloc_chk(LINESIZE + 1, "assemble_out.line");
     if(cmdl->opd->opdc == 0 || cmdl->opd->opdc > 2) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     assembleline("    PUSH 0,GR1", pass);
@@ -419,7 +418,7 @@ void assemble_rpush(const CMDLINE *cmdl, PASS pass)
     int i;
     char *line = malloc_chk(LINESIZE + 1, "assemble_rpush.line");
     if(cmdl->opd->opdc > 0) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     for(i = 1; i <= GRSIZE-1; i++) {
@@ -448,7 +447,7 @@ void assemble_rpop(const CMDLINE *cmdl, PASS pass)
     int i;
     char *line = malloc_chk(LINESIZE + 1, "assemble_rpop.line");
     if(cmdl->opd->opdc > 0) {
-        setcerr(106, NULL);    /* operand count mismatch */
+        setcerr(106, "");    /* operand count mismatch */
         return;
     }
     for(i = GRSIZE-1; i >= 1; i--) {
@@ -469,7 +468,7 @@ bool casl2cmd(CMD *cmdtbl, const CMDLINE *cmdl, PASS pass)
 {
     int i;
     void (*cmdptr)();
-    for(i = 0; cmdtbl[i].name != NULL; i++) {
+    for(i = 0; *(cmdtbl[i].name) != '\0'; i++) {
         if(strcmp(cmdl->cmd, cmdtbl[i].name) == 0) {
             cmdptr = cmdtbl[i].ptr;
             (*cmdptr)(cmdl, pass);
@@ -576,7 +575,7 @@ bool assemble_comet2cmd(const CMDLINE *cmdl, PASS pass)
 bool assembletok(const CMDLINE *cmdl, PASS pass)
 {
     /* 命令がない場合 */
-    if(cmdl->cmd == NULL) {
+    if(*(cmdl->cmd) == '\0') {
         return true;
     }
     /* アセンブラ命令またはマクロ命令の書込 */
@@ -605,14 +604,14 @@ bool assembleline(const char *line, PASS pass)
     stat = (cerr->num == 0) ? true : false;
     if(cmdl != NULL) {
         if(stat == true) {
-            if(pass == FIRST && cmdl->label != NULL) {
+            if(pass == FIRST && cmdl->label != '\0') {
                 stat = addlabel(asptr->prog, cmdl->label, asptr->ptr);
             }
-            if(stat == true) {
-                stat = assembletok(cmdl, pass);
-            }
-            FREE(cmdl->label);
         }
+        if(stat == true) {
+            stat = assembletok(cmdl, pass);
+        }
+        FREE(cmdl->label);
         if(cmdl->opd != NULL) {
             for(i = 0; i < cmdl->opd->opdc; i++) {
                 FREE(cmdl->opd->opdv[i]);