Add hb_trace_t
diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index dcaea21..5dbf89d 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -113,22 +113,28 @@
/*
- * Debug
+ * Trace
*/
-/* Helper object to increment debug_depth and decrement
- * when returning from the object. */
-template <int debug_level>
-struct hb_auto_debug_depth_t {
- explicit hb_auto_debug_depth_t (unsigned int *p) : p(p) { ++*p; }
- ~hb_auto_debug_depth_t (void) { --*p; }
+
+template <int max_depth>
+struct hb_trace_t {
+ explicit hb_trace_t (unsigned int *pdepth) : pdepth(pdepth) { if (max_depth) ++*pdepth; }
+ ~hb_trace_t (void) { if (max_depth) --*pdepth; }
+
+ inline void log (const char *what, const char *function, const void *obj)
+ {
+ if (*pdepth < max_depth)
+ fprintf (stderr, "%s(%p) %-*d-> %s\n", what, obj, *pdepth, *pdepth, function);
+ }
private:
- unsigned int *p;
+ unsigned int *pdepth;
};
-template <> /* Optimize when debugging is disabled */
-struct hb_auto_debug_depth_t<0> {
- explicit hb_auto_debug_depth_t (unsigned int *p) {}
+template <> /* Optimize when tracing is disabled */
+struct hb_trace_t<0> {
+ explicit hb_trace_t (unsigned int *p) {}
+ inline void log (const char *what, const char *function, const void *obj) {};
};
@@ -143,9 +149,8 @@
#define TRACE_SANITIZE() \
- hb_auto_debug_depth_t<HB_DEBUG_SANITIZE> auto_debug_depth (&context->debug_depth); \
- if (HB_DEBUG_SANITIZE) \
- _hb_trace ("SANITIZE", HB_FUNC, this, context->debug_depth, HB_DEBUG_SANITIZE); \
+ hb_trace_t<HB_DEBUG_SANITIZE> trace (&context->debug_depth); \
+ trace.log ("SANITIZE", HB_FUNC, this);
#define SANITIZE_ARG_DEF \
