From d687993754371a4cb94cb597a4e683afa9ad4a475f665167875034aea140842d Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Mon, 7 Oct 2024 19:19:14 +0300
Subject: [PATCH] Zero-based indeces

---
 cyac/example/print-map.c |  4 ++--
 cyac/iter.c              | 11 ++++++-----
 cyac/iter.h              |  2 +-
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/cyac/example/print-map.c b/cyac/example/print-map.c
index f145734..62d8aec 100644
--- a/cyac/example/print-map.c
+++ b/cyac/example/print-map.c
@@ -55,7 +55,7 @@ static enum YACErr
 myCb(
     const unsigned char *key,
     const size_t keyLen,
-    const size_t idx,
+    const ptrdiff_t idx,
     void *cbState,
     struct YACAtom *atom,
     ptrdiff_t *off,
@@ -75,7 +75,7 @@ myCb(
     if (key != NULL) {
         fwrite(key, keyLen, 1, stdout);
         fputs(": ", stdout);
-    } else if (idx > 0) {
+    } else if (idx > -1) {
         fprintf(stdout, "%zu: ", idx);
     }
 
diff --git a/cyac/iter.c b/cyac/iter.c
index ddb16c1..a7071cc 100644
--- a/cyac/iter.c
+++ b/cyac/iter.c
@@ -15,6 +15,7 @@
 
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <string.h>
 
 #include "dec.h"
@@ -38,7 +39,7 @@ YACIterList(
         }
         (*off) += atom->off;
         eoc = atom->typ == YACItemEOC;
-        err = cb(NULL, 0, eoc ? 0 : (n + 1), cbState, atom, off, buf, len);
+        err = cb(NULL, 0, eoc ? -1 : (ptrdiff_t)n, cbState, atom, off, buf, len);
         if (err != YACErrNo) {
             return err;
         }
@@ -68,7 +69,7 @@ YACIterMap(
         }
         (*off) += atom->off;
         if (atom->typ == YACItemEOC) {
-            err = cb(NULL, 0, 0, cbState, atom, off, buf, len);
+            err = cb(NULL, 0, -1, cbState, atom, off, buf, len);
             if (err != YACErrNo) {
                 return err;
             }
@@ -93,7 +94,7 @@ YACIterMap(
         if (atom->typ == YACItemEOC) {
             return YACErrMapNoVal;
         }
-        err = cb(key, keyLen, 0, cbState, atom, off, buf, len);
+        err = cb(key, keyLen, -1, cbState, atom, off, buf, len);
         if (err != YACErrNo) {
             return err;
         }
@@ -172,14 +173,14 @@ YACIterBlob(
         }
         if ((atom->len) > 0) {
             atom->typ = YACItemChunk;
-            err = cb(NULL, 0, n + 1, cbState, atom, off, buf, len);
+            err = cb(NULL, 0, (ptrdiff_t)n, cbState, atom, off, buf, len);
             if (err != YACErrNo) {
                 return err;
             }
         }
     }
     atom->typ = YACItemEOC;
-    err = cb(NULL, 0, 0, cbState, atom, off, buf, len);
+    err = cb(NULL, 0, -1, cbState, atom, off, buf, len);
     if (err != YACErrNo) {
         return err;
     }
diff --git a/cyac/iter.h b/cyac/iter.h
index 37019af..081603d 100644
--- a/cyac/iter.h
+++ b/cyac/iter.h
@@ -8,7 +8,7 @@
 typedef enum YACErr (*YACIterCb)(
     const unsigned char *key,
     const size_t keyLen,
-    const size_t idx,
+    const ptrdiff_t idx,
     void *cbState,
     struct YACAtom *atom,
     ptrdiff_t *off,
-- 
2.48.1