Avoid compiler's warnings

[gitmo/Mouse.git] / xs-src / MouseTypeConstraints.xs

diff --git a/xs-src/MouseTypeConstraints.xs b/xs-src/MouseTypeConstraints.xs
index 9f1e677..5ad3389 100644 (file)
--- a/xs-src/MouseTypeConstraints.xs
+++ b/xs-src/MouseTypeConstraints.xs
@@ -7,7 +7,7 @@
 #if PERL_BCDVERSION >= 0x5008005
 #define LooksLikeNumber(sv) looks_like_number(sv)
 #else
-#define LooksLikeNumber(sv) ( SvPOKp(sv) ? looks_like_number(sv) : SvNIOKp(sv) )
+#define LooksLikeNumber(sv) ( SvPOKp(sv) ? looks_like_number(sv) : (I32)SvNIOKp(sv) )
 #endif
 
 #ifndef SvRXOK
@@ -117,15 +117,38 @@ mouse_tc_Num(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) {
     return LooksLikeNumber(sv);
 }
 
+static int
+S_nv_is_integer(pTHX_ NV const nv) {
+    if(nv == (NV)(IV)nv){
+        return TRUE;
+    }
+    else {
+        char buf[64];  /* Must fit sprintf/Gconvert of longest NV */
+        char* p;
+        (void)Gconvert(nv, NV_DIG, 0, buf);
+        p = &buf[0];
+
+        /* -?[0-9]+ */
+        if(*p == '-') p++;
+
+        while(*p){
+            if(!isDIGIT(*p)){
+                return FALSE;
+            }
+            p++;
+        }
+        return TRUE;
+    }
+}
+
 int
 mouse_tc_Int(pTHX_ SV* const data PERL_UNUSED_DECL, SV* const sv) {
     assert(sv);
     if(SvIOKp(sv)){
         return TRUE;
     }
-    else if(SvNOKp(sv)){
-        NV const nv = SvNVX(sv);
-        return nv > 0 ? (nv == (NV)(UV)nv) : (nv == (NV)(IV)nv);
+    else if(SvNOKp(sv)) {
+        return S_nv_is_integer(aTHX_ SvNVX(sv));
     }
     else if(SvPOKp(sv)){
         int const num_type = grok_number(SvPVX(sv), SvCUR(sv), NULL);
@@ -702,8 +725,7 @@ CODE:
             SV* const tc = *av_fetch(types, i, TRUE);
             SV* const c  = get_slots(tc, "compiled_type_constraint");
             if(!(c && mouse_tc_CodeRef(aTHX_ NULL, c))){
-                sv_dump(self);
-                croak("'%"SVf"' has no compiled type constraint", self);
+                mouse_throw_error(self, c, "'%"SVf"' has no compiled type constraint", self);
             }
             av_push(union_checks, newSVsv(c));
         }
@@ -721,3 +743,16 @@ CODE:
     (void)set_slots(self, "compiled_type_constraint", check);
 }
 
+bool
+check(SV* self, SV* sv)
+CODE:
+{
+    SV* const check = get_slots(self, "compiled_type_constraint");
+    if(!(check && mouse_tc_CodeRef(aTHX_ NULL, check))){
+        mouse_throw_error(self, check, "'%"SVf"' has no compiled type constraint", self);
+    }
+    RETVAL = mouse_tc_check(aTHX_ check, sv) ? TRUE : FALSE;
+}
+OUTPUT:
+    RETVAL
+