X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/d1fd0100b99385b1e0c84be811cacef81d01c17a..c8d3da6c383d784b2e60260e745a835d7d9b9907:/feature.h

diff --git a/feature.h b/feature.h
index 3ce6e85..20f7996 100644
--- a/feature.h
+++ b/feature.h
@@ -5,20 +5,349 @@
  */
 
 
+#ifndef PERL_FEATURE_H_
+#define PERL_FEATURE_H_
+
 #if defined(PERL_CORE) || defined (PERL_EXT)
 
 #define HINT_FEATURE_SHIFT	26
 
+#define FEATURE_BITWISE_BIT          0x0001
+#define FEATURE___SUB___BIT          0x0002
+#define FEATURE_MYREF_BIT            0x0004
+#define FEATURE_EVALBYTES_BIT        0x0008
+#define FEATURE_FC_BIT               0x0010
+#define FEATURE_INDIRECT_BIT         0x0020
+#define FEATURE_ISA_BIT              0x0040
+#define FEATURE_MULTIDIMENSIONAL_BIT 0x0080
+#define FEATURE_POSTDEREF_QQ_BIT     0x0100
+#define FEATURE_REFALIASING_BIT      0x0200
+#define FEATURE_SAY_BIT              0x0400
+#define FEATURE_SIGNATURES_BIT       0x0800
+#define FEATURE_STATE_BIT            0x1000
+#define FEATURE_SWITCH_BIT           0x2000
+#define FEATURE_UNIEVAL_BIT          0x4000
+#define FEATURE_UNICODE_BIT          0x8000
+
 #define FEATURE_BUNDLE_DEFAULT	0
 #define FEATURE_BUNDLE_510	1
 #define FEATURE_BUNDLE_511	2
 #define FEATURE_BUNDLE_515	3
+#define FEATURE_BUNDLE_523	4
+#define FEATURE_BUNDLE_527	5
 #define FEATURE_BUNDLE_CUSTOM	(HINT_FEATURE_MASK >> HINT_FEATURE_SHIFT)
 
 #define CURRENT_HINTS \
     (PL_curcop == &PL_compiling ? PL_hints : PL_curcop->cop_hints)
-#define CURRENT_FEATURE_BUNDLE	(CURRENT_HINTS >> HINT_FEATURE_SHIFT)
+#define CURRENT_FEATURE_BUNDLE \
+    ((CURRENT_HINTS & HINT_FEATURE_MASK) >> HINT_FEATURE_SHIFT)
+
+#define FEATURE_IS_ENABLED_MASK(mask)                   \
+  ((CURRENT_HINTS & HINT_LOCALIZE_HH)                \
+    ? (PL_curcop->cop_features & (mask)) : FALSE)
+
+/* The longest string we pass in.  */
+#define MAX_FEATURE_LEN (sizeof("multidimensional")-1)
+
+#define FEATURE_FC_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_515 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_FC_BIT)) \
+    )
+
+#define FEATURE_ISA_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_ISA_BIT) \
+    )
+
+#define FEATURE_SAY_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_SAY_BIT)) \
+    )
+
+#define FEATURE_STATE_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_STATE_BIT)) \
+    )
+
+#define FEATURE_SWITCH_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_SWITCH_BIT)) \
+    )
+
+#define FEATURE_BITWISE_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_527 \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_BITWISE_BIT)) \
+    )
+
+#define FEATURE_INDIRECT_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527 \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_INDIRECT_BIT)) \
+    )
+
+#define FEATURE_EVALBYTES_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_515 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_EVALBYTES_BIT)) \
+    )
+
+#define FEATURE_SIGNATURES_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_SIGNATURES_BIT) \
+    )
+
+#define FEATURE___SUB___IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_515 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE___SUB___BIT)) \
+    )
+
+#define FEATURE_REFALIASING_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_REFALIASING_BIT) \
+    )
+
+#define FEATURE_POSTDEREF_QQ_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_523 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_POSTDEREF_QQ_BIT)) \
+    )
+
+#define FEATURE_UNIEVAL_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_515 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_UNIEVAL_BIT)) \
+    )
+
+#define FEATURE_MYREF_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_MYREF_BIT) \
+    )
+
+#define FEATURE_UNICODE_IS_ENABLED \
+    ( \
+	(CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_511 && \
+	 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527) \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_UNICODE_BIT)) \
+    )
+
+#define FEATURE_MULTIDIMENSIONAL_IS_ENABLED \
+    ( \
+	CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_527 \
+     || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
+	 FEATURE_IS_ENABLED_MASK(FEATURE_MULTIDIMENSIONAL_BIT)) \
+    )
+
+
+#define SAVEFEATUREBITS() SAVEI32(PL_compiling.cop_features)
+
+#define CLEARFEATUREBITS() (PL_compiling.cop_features = 0)
+
+#define STOREFEATUREBITSHH(hh) \
+  (hv_stores((hh), "feature/bits", newSVuv(PL_compiling.cop_features)))
+
+#define FETCHFEATUREBITSHH(hh)                              \
+  STMT_START {                                              \
+      SV **fbsv = hv_fetchs((hh), "feature/bits", FALSE);   \
+      PL_compiling.cop_features = fbsv ? SvUV(*fbsv) : 0;   \
+  } STMT_END
 
 #endif /* PERL_CORE or PERL_EXT */
 
+#ifdef PERL_IN_OP_C
+PERL_STATIC_INLINE void
+S_enable_feature_bundle(pTHX_ SV *ver)
+{
+    SV *comp_ver = sv_newmortal();
+    PL_hints = (PL_hints &~ HINT_FEATURE_MASK)
+	     | (
+		  (sv_setnv(comp_ver, 5.027),
+		   vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
+			? FEATURE_BUNDLE_527 :
+		  (sv_setnv(comp_ver, 5.023),
+		   vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
+			? FEATURE_BUNDLE_523 :
+		  (sv_setnv(comp_ver, 5.015),
+		   vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
+			? FEATURE_BUNDLE_515 :
+		  (sv_setnv(comp_ver, 5.011),
+		   vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
+			? FEATURE_BUNDLE_511 :
+		  (sv_setnv(comp_ver, 5.009005),
+		   vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
+			? FEATURE_BUNDLE_510 :
+			  FEATURE_BUNDLE_DEFAULT
+	       ) << HINT_FEATURE_SHIFT;
+    /* special case */
+    assert(PL_curcop == &PL_compiling);
+    if (FEATURE_UNICODE_IS_ENABLED) PL_hints |=  HINT_UNI_8_BIT;
+    else			    PL_hints &= ~HINT_UNI_8_BIT;
+}
+#endif /* PERL_IN_OP_C */
+
+#ifdef PERL_IN_MG_C
+
+#define magic_sethint_feature(keysv, keypv, keylen, valsv, valbool) \
+    S_magic_sethint_feature(aTHX_ (keysv), (keypv), (keylen), (valsv), (valbool))
+PERL_STATIC_INLINE void
+S_magic_sethint_feature(pTHX_ SV *keysv, const char *keypv, STRLEN keylen,
+                        SV *valsv, bool valbool) {
+    if (keysv)
+      keypv = SvPV_const(keysv, keylen);
+
+    if (memBEGINs(keypv, keylen, "feature_")) {
+        const char *subf = keypv + (sizeof("feature_")-1);
+        U32 mask = 0;
+        switch (*subf) {
+        case '_':
+            if (keylen == sizeof("feature___SUB__")-1
+                 && memcmp(subf+1, "_SUB__", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE___SUB___BIT;
+                break;
+            }
+            return;
+
+        case 'b':
+            if (keylen == sizeof("feature_bitwise")-1
+                 && memcmp(subf+1, "itwise", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_BITWISE_BIT;
+                break;
+            }
+            return;
+
+        case 'e':
+            if (keylen == sizeof("feature_evalbytes")-1
+                 && memcmp(subf+1, "valbytes", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_EVALBYTES_BIT;
+                break;
+            }
+            return;
+
+        case 'f':
+            if (keylen == sizeof("feature_fc")-1
+                 && memcmp(subf+1, "c", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_FC_BIT;
+                break;
+            }
+            return;
+
+        case 'i':
+            if (keylen == sizeof("feature_indirect")-1
+                 && memcmp(subf+1, "ndirect", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_INDIRECT_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_isa")-1
+                 && memcmp(subf+1, "sa", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_ISA_BIT;
+                break;
+            }
+            return;
+
+        case 'm':
+            if (keylen == sizeof("feature_multidimensional")-1
+                 && memcmp(subf+1, "ultidimensional", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_MULTIDIMENSIONAL_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_myref")-1
+                 && memcmp(subf+1, "yref", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_MYREF_BIT;
+                break;
+            }
+            return;
+
+        case 'p':
+            if (keylen == sizeof("feature_postderef_qq")-1
+                 && memcmp(subf+1, "ostderef_qq", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_POSTDEREF_QQ_BIT;
+                break;
+            }
+            return;
+
+        case 'r':
+            if (keylen == sizeof("feature_refaliasing")-1
+                 && memcmp(subf+1, "efaliasing", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_REFALIASING_BIT;
+                break;
+            }
+            return;
+
+        case 's':
+            if (keylen == sizeof("feature_say")-1
+                 && memcmp(subf+1, "ay", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_SAY_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_signatures")-1
+                 && memcmp(subf+1, "ignatures", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_SIGNATURES_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_state")-1
+                 && memcmp(subf+1, "tate", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_STATE_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_switch")-1
+                 && memcmp(subf+1, "witch", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_SWITCH_BIT;
+                break;
+            }
+            return;
+
+        case 'u':
+            if (keylen == sizeof("feature_unicode")-1
+                 && memcmp(subf+1, "nicode", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_UNICODE_BIT;
+                break;
+            }
+            else if (keylen == sizeof("feature_unieval")-1
+                 && memcmp(subf+1, "nieval", keylen - sizeof("feature_")) == 0) {
+                mask = FEATURE_UNIEVAL_BIT;
+                break;
+            }
+            return;
+
+        default:
+            return;
+        }
+        if (valsv ? SvTRUE(valsv) : valbool)
+            PL_compiling.cop_features |= mask;
+        else
+            PL_compiling.cop_features &= ~mask;
+    }
+}
+#endif /* PERL_IN_MG_C */
+
+#endif /* PERL_FEATURE_H_ */
+
 /* ex: set ro: */