use more explicit types for some booleans

Now that we build with C99, we can be more expressive with types.

diff --git a/lib/gvpr/parse.c b/lib/gvpr/parse.c
index d849e157b2c91cbaed586ff6e504720802548865..31b0477617c94c26e03ae97ba780f64606267638 100644 (file)
--- a/lib/gvpr/parse.c
+++ b/lib/gvpr/parse.c
@@ -19,6 +19,7 @@
 #include <ast/error.h>
 #include <cgraph/agxbuf.h>
 #include <gvpr/parse.h>
+#include <stdbool.h>
 #include <string.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -150,7 +151,7 @@ static int skipWS(Sfio_t * str)
 {
     int c;
 
-    while (1) {
+    while (true) {
        c = readc(str, 0);
        if (!isspace(c)) {
            return c;
@@ -164,7 +165,7 @@ static int skipWS(Sfio_t * str)
  */
 static void parseID(Sfio_t * str, int c, char *buf, size_t bsize)
 {
-    int more = 1;
+    bool more = true;
     char *ptr = buf;
     char *eptr = buf + (bsize - 1);
 
@@ -172,14 +173,14 @@ static void parseID(Sfio_t * str, int c, char *buf, size_t bsize)
     while (more) {
        c = readc(str, 0);
        if (c < 0)
-           more = 0;
+           more = false;
        if (isalpha(c) || c == '_') {
            if (ptr == eptr)
-               more = 0;
+               more = false;
            else
                *ptr++ = c;
        } else {
-           more = 0;
+           more = false;
            unreadc(str, c);
        }
     }
@@ -267,7 +268,7 @@ static int endBracket(Sfio_t * ins, agxbuf * outs, char bc, char ec)
 {
     int c;
 
-    while (1) {
+    while (true) {
        c = readc(ins, outs);
        if (c < 0 || c == ec)
            return c;
@@ -461,7 +462,7 @@ parse_prog *parseProg(char *input, int isFile)
     char *mode;
     char *guard = NULL;
     char *action = NULL;
-    int more;
+    bool more;
     parse_block *blocklist = 0;
     case_info *edgelist = 0;
     case_info *nodelist = 0;
@@ -503,7 +504,7 @@ parse_prog *parseProg(char *input, int isFile)
     }
     
     begg_stmt = 0;
-    more = 1;
+    more = true;
     while (more) {
        switch (parseCase(str, &guard, &gline, &action, &line)) {
        case Begin:
@@ -531,7 +532,7 @@ parse_prog *parseProg(char *input, int isFile)
            bindAction(EndG, action, line, &prog->endg_stmt, &prog->l_endg);
            break;
        case Eof:
-           more = 0;
+           more = false;
            break;
        case Node:
            nodel = addCase(nodel, guard, gline, action, line, &n_nstmts);
@@ -544,7 +545,7 @@ parse_prog *parseProg(char *input, int isFile)
                edgelist = edgel;
            break;
        case Error:             /* to silence warnings */
-           more = 0;
+           more = false;
            break;
        }
     }