From 75f5535c4fcccb09006a1cd718a8096e96b0d7da Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Thu, 4 Apr 2013 04:30:39 +0900
Subject: rename DATA API: mrb_get_datatype -> mrb_data_get_ptr;
 mrb_check_datatype -> mrb_data_check_and_get

---
 include/mruby/data.h              |  9 ++++---
 mrbgems/mruby-random/src/random.c |  2 +-
 mrbgems/mruby-time/src/time.c     | 56 +++++++++++++++++++--------------------
 src/etc.c                         | 27 ++++++++++++-------
 4 files changed, 53 insertions(+), 41 deletions(-)

diff --git a/include/mruby/data.h b/include/mruby/data.h
index 6ddaebfaa..2fffd0c69 100644
--- a/include/mruby/data.h
+++ b/include/mruby/data.h
@@ -37,10 +37,13 @@ struct RData *mrb_data_object_alloc(mrb_state *mrb, struct RClass* klass, void *
 #define RDATA(obj)         ((struct RData *)((obj).value.p))
 #define DATA_PTR(d)        (RDATA(d)->data)
 #define DATA_TYPE(d)       (RDATA(d)->type)
-void *mrb_get_datatype(mrb_state *mrb, mrb_value, const mrb_data_type*);
-void *mrb_check_datatype(mrb_state *mrb, mrb_value, const mrb_data_type*);
+void mrb_data_check_type(mrb_state *mrb, mrb_value, const mrb_data_type*);
+void *mrb_data_get_ptr(mrb_state *mrb, mrb_value, const mrb_data_type*);
+void *mrb_data_check_and_get(mrb_state *mrb, mrb_value, const mrb_data_type*);
+#define mrb_get_datatype(mrb,val,type) mrb_data_get_ptr(mrb, val, type)
+#define mrb_check_datatype(mrb,val,type) mrb_data_check_and_get(mrb, val, type)
 #define Data_Get_Struct(mrb,obj,type,sval) do {\
-  *(void**)&sval = mrb_check_datatype(mrb, obj, type); \
+  *(void**)&sval = mrb_data_check_and_get(mrb, obj, type); \
 } while (0)
 
 #if defined(__cplusplus)
diff --git a/mrbgems/mruby-random/src/random.c b/mrbgems/mruby-random/src/random.c
index 6500b3f84..ba90d664e 100644
--- a/mrbgems/mruby-random/src/random.c
+++ b/mrbgems/mruby-random/src/random.c
@@ -29,7 +29,7 @@ static mt_state *mrb_mt_get_context(mrb_state *mrb,  mrb_value self)
   mrb_value context;
 
   context = mrb_iv_get(mrb, self, mrb_intern(mrb, MT_STATE_KEY));
-  t = (mt_state *)mrb_check_datatype(mrb, context, &mt_state_type);
+  t = (mt_state*)mrb_data_get_ptr(mrb, context, &mt_state_type);
   if (!t)
     mrb_raise(mrb, E_RUNTIME_ERROR, "mt_state get from mrb_iv_get failed");
 
diff --git a/mrbgems/mruby-time/src/time.c b/mrbgems/mruby-time/src/time.c
index 0ffc0e6f8..200eed0a0 100644
--- a/mrbgems/mruby-time/src/time.c
+++ b/mrbgems/mruby-time/src/time.c
@@ -298,8 +298,8 @@ mrb_time_eq(mrb_state *mrb, mrb_value self)
   mrb_bool eq_p;
 
   mrb_get_args(mrb, "o", &other);
-  tm1 = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
-  tm2 = (struct mrb_time *)mrb_get_datatype(mrb, other, &mrb_time_type);
+  tm1 = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
+  tm2 = (struct mrb_time*)mrb_data_get_ptr(mrb, other, &mrb_time_type);
   eq_p = tm1 && tm2 && tm1->sec == tm2->sec && tm1->usec == tm2->usec;
 
   return mrb_bool_value(eq_p);
@@ -312,8 +312,8 @@ mrb_time_cmp(mrb_state *mrb, mrb_value self)
   struct mrb_time *tm1, *tm2;
 
   mrb_get_args(mrb, "o", &other);
-  tm1 = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
-  tm2 = (struct mrb_time *)mrb_get_datatype(mrb, other, &mrb_time_type);
+  tm1 = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
+  tm2 = (struct mrb_time*)mrb_data_get_ptr(mrb, other, &mrb_time_type);
   if (!tm1 || !tm2) return mrb_nil_value();
   if (tm1->sec > tm2->sec) {
     return mrb_fixnum_value(1);
@@ -338,7 +338,7 @@ mrb_time_plus(mrb_state *mrb, mrb_value self)
   struct mrb_time *tm;
 
   mrb_get_args(mrb, "f", &f);
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_time_make(mrb, mrb_obj_class(mrb, self), (double)tm->sec+f, tm->usec, tm->timezone);
 }
@@ -351,10 +351,10 @@ mrb_time_minus(mrb_state *mrb, mrb_value self)
   struct mrb_time *tm, *tm2;
 
   mrb_get_args(mrb, "o", &other);
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
 
-  tm2 = (struct mrb_time *)mrb_get_datatype(mrb, other, &mrb_time_type);
+  tm2 = (struct mrb_time*)mrb_data_get_ptr(mrb, other, &mrb_time_type);
   if (tm2) {
     f = (mrb_float)(tm->sec - tm2->sec)
       + (mrb_float)(tm->usec - tm2->usec) / 1.0e6;
@@ -373,7 +373,7 @@ mrb_time_wday(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_wday);
 }
@@ -385,7 +385,7 @@ mrb_time_yday(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_check_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_yday + 1);
 }
@@ -397,7 +397,7 @@ mrb_time_year(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_year + 1900);
 }
@@ -409,7 +409,7 @@ mrb_time_zone(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   if (tm->timezone <= MRB_TIMEZONE_NONE) return mrb_nil_value();
   if (tm->timezone >= MRB_TIMEZONE_LAST) return mrb_nil_value();
@@ -426,7 +426,7 @@ mrb_time_asctime(mrb_state *mrb, mrb_value self)
   char buf[256];
   int len;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   d = &tm->datetime;
   len = snprintf(buf, sizeof(buf), "%s %s %02d %02d:%02d:%02d %s%d",
@@ -444,7 +444,7 @@ mrb_time_day(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_mday);
 }
@@ -457,7 +457,7 @@ mrb_time_dstp(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_bool_value(tm->datetime.tm_isdst);
 }
@@ -470,7 +470,7 @@ mrb_time_getutc(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm, *tm2;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return self;
   tm2 = (struct mrb_time *)mrb_malloc(mrb, sizeof(*tm));
   *tm2 = *tm;
@@ -486,7 +486,7 @@ mrb_time_getlocal(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm, *tm2;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return self;
   tm2 = (struct mrb_time *)mrb_malloc(mrb, sizeof(*tm));
   *tm2 = *tm;
@@ -502,7 +502,7 @@ mrb_time_hour(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_hour);
 }
@@ -517,7 +517,7 @@ mrb_time_initialize(mrb_state *mrb, mrb_value self)
   int n;
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)DATA_PTR(self);
   if (tm) {
     mrb_time_free(mrb, tm);
   }
@@ -563,7 +563,7 @@ mrb_time_localtime(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return self;
   tm->timezone = MRB_TIMEZONE_LOCAL;
   mrb_time_update_datetime(tm);
@@ -577,7 +577,7 @@ mrb_time_mday(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_mday);
 }
@@ -589,7 +589,7 @@ mrb_time_min(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_min);
 }
@@ -601,7 +601,7 @@ mrb_time_mon(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_mon + 1);
 }
@@ -613,7 +613,7 @@ mrb_time_sec(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->datetime.tm_sec);
 }
@@ -626,7 +626,7 @@ mrb_time_to_f(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_float_value((mrb_float)tm->sec + (mrb_float)tm->usec/1.0e6);
 }
@@ -638,7 +638,7 @@ mrb_time_to_i(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->sec);
 }
@@ -650,7 +650,7 @@ mrb_time_usec(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_fixnum_value(tm->usec);
 }
@@ -662,7 +662,7 @@ mrb_time_utc(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
 
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (tm) {
     tm->timezone = MRB_TIMEZONE_UTC;
     mrb_time_update_datetime(tm);
@@ -676,7 +676,7 @@ static mrb_value
 mrb_time_utcp(mrb_state *mrb, mrb_value self)
 {
   struct mrb_time *tm;
-  tm = (struct mrb_time *)mrb_get_datatype(mrb, self, &mrb_time_type);
+  tm = (struct mrb_time*)mrb_data_get_ptr(mrb, self, &mrb_time_type);
   if (!tm) return mrb_nil_value();
   return mrb_bool_value(tm->timezone == MRB_TIMEZONE_UTC);
 }
diff --git a/src/etc.c b/src/etc.c
index 0b58ad67c..727915145 100644
--- a/src/etc.c
+++ b/src/etc.c
@@ -22,28 +22,37 @@ mrb_data_object_alloc(mrb_state *mrb, struct RClass *klass, void *ptr, const mrb
   return data;
 }
 
-void *
-mrb_get_datatype(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
+void
+mrb_data_check_type(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
 {
   if (mrb_special_const_p(obj) || (mrb_type(obj) != MRB_TT_DATA)) {
-    return NULL;
+    mrb_check_type(mrb, obj, MRB_TT_DATA);
   }
   if (DATA_TYPE(obj) != type) {
-    return NULL;
+    const mrb_data_type *t2 = DATA_TYPE(obj);
+
+    if (t2) {
+      mrb_raisef(mrb, E_TYPE_ERROR, "wrong argument type %S (expected %S)",
+                 mrb_str_new_cstr(mrb, t2->struct_name), mrb_str_new_cstr(mrb, type->struct_name));
+    }
   }
+}
+
+void *
+mrb_data_check_and_get(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
+{
+  mrb_data_check_type(mrb, obj, type);
   return DATA_PTR(obj);
 }
 
 void *
-mrb_check_datatype(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
+mrb_data_get_ptr(mrb_state *mrb, mrb_value obj, const mrb_data_type *type)
 {
   if (mrb_special_const_p(obj) || (mrb_type(obj) != MRB_TT_DATA)) {
-    mrb_check_type(mrb, obj, MRB_TT_DATA);
+    return NULL;
   }
   if (DATA_TYPE(obj) != type) {
-    const char *etype = DATA_TYPE(obj)->struct_name;
-    mrb_raisef(mrb, E_TYPE_ERROR, "wrong argument type %S (expected %S)",
-               mrb_str_new_cstr(mrb, etype), mrb_str_new_cstr(mrb, type->struct_name));
+    return NULL;
   }
   return DATA_PTR(obj);
 }
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