X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=xs-src%2FMouse.xs;h=8bb69c56b948453b013160cc5b0761efc31d6fbe;hb=902174eb6dc2afbe8a2b8fb0a27446b3276787d8;hp=143228a794e24cfa541d03e04407e867f22bbe56;hpb=70425827d676b2b4130f5e78689bf017fe4c4609;p=gitmo%2FMouse.git

diff --git a/xs-src/Mouse.xs b/xs-src/Mouse.xs
index 143228a..8bb69c5 100644
--- a/xs-src/Mouse.xs
+++ b/xs-src/Mouse.xs
@@ -41,6 +41,12 @@ enum mouse_xc_ix_t{
     MOUSE_XC_last
 };
 
+enum mouse_modifier_t {
+    MOUSE_M_BEFORE,
+    MOUSE_M_AROUND,
+    MOUSE_M_AFTER,
+};
+
 static MGVTBL mouse_xc_vtbl; /* for identity */
 
 static void
@@ -70,10 +76,10 @@ mouse_class_push_attribute_list(pTHX_ SV* const metaclass, AV* const attrall, HV
     }
 }
 
+XS(XS_Mouse__Object_BUILDARGS); /* prototype */
+
 static int
 mouse_class_has_custom_buildargs(pTHX_ HV* const stash) {
-    XS(XS_Mouse__Object_BUILDARGS); /* prototype */
-
     GV* const buildargs = gv_fetchmeth_autoload(stash, "BUILDARGS", sizeof("BUILDARGS")-1, 0);
 
     return buildargs && CvXSUB(GvCV(buildargs)) != XS_Mouse__Object_BUILDARGS;
@@ -117,7 +123,7 @@ mouse_class_update_xc(pTHX_ SV* const metaclass PERL_UNUSED_DECL, HV* const stas
         flags |= MOUSEf_XC_HAS_BUILDARGS;
     }
 
-    if(predicate_calls(metaclass, "__strict_constructor")){
+    if(predicate_calls(metaclass, "strict_constructor")){
         flags |= MOUSEf_XC_CONSTRUCTOR_IS_STRICT;
     }
 
@@ -285,13 +291,13 @@ mouse_report_unknown_args(pTHX_ SV* const meta, AV* const attrs, HV* const args)
 
 
 static void
-mouse_class_initialize_object(pTHX_ SV* const meta, SV* const object, HV* const args, bool const ignore_triggers) {
+mouse_class_initialize_object(pTHX_ SV* const meta, SV* const object, HV* const args, bool const is_cloning) {
     AV* const xc    = mouse_get_xc(aTHX_ meta);
     AV* const attrs = MOUSE_xc_attrall(xc);
-    I32 len         = AvFILLp(attrs) + 1;
+    I32 const len   = AvFILLp(attrs) + 1;
     I32 i;
     AV* triggers_queue = NULL;
-    I32 used = 0;
+    U32 used = 0;
 
     assert(meta || object);
     assert(args);
@@ -301,10 +307,6 @@ mouse_class_initialize_object(pTHX_ SV* const meta, SV* const object, HV* const
         croak("You cannot use tied HASH reference as initializing arguments");
     }
 
-    if(!ignore_triggers){
-        triggers_queue = newAV_mortal();
-    }
-
     /* for each attribute */
     for(i = 0; i < len; i++){
         SV* const attr = MOUSE_av_at(attrs, i);
@@ -324,22 +326,27 @@ mouse_class_initialize_object(pTHX_ SV* const meta, SV* const object, HV* const
             if(SvROK(value) && flags & MOUSEf_ATTR_IS_WEAK_REF){
                 weaken_slot(object, slot);
             }
-            if(flags & MOUSEf_ATTR_HAS_TRIGGER && triggers_queue){
+            if(flags & MOUSEf_ATTR_HAS_TRIGGER){
                 AV* const pair = newAV();
                 av_push(pair, newSVsv( mcall0s(attr, "trigger") ));
                 av_push(pair, newSVsv(value));
 
+                if(!triggers_queue) {
+                    triggers_queue = newAV_mortal();
+                }
                 av_push(triggers_queue, (SV*)pair);
             }
             used++;
         }
         else { /* no init arg */
             if(flags & (MOUSEf_ATTR_HAS_DEFAULT | MOUSEf_ATTR_HAS_BUILDER)){
-                if(!(flags & MOUSEf_ATTR_IS_LAZY)){
+                /* skip if the object has the slot (it occurs on cloning/reblessing) */
+                if(!(flags & MOUSEf_ATTR_IS_LAZY) && !has_slot(object, slot)){
                     mouse_xa_set_default(aTHX_ xa, object);
                 }
             }
-            else if(flags & MOUSEf_ATTR_IS_REQUIRED) {
+            /* don't check while cloning (or reblesseing) */
+            else if(!is_cloning && flags & MOUSEf_ATTR_IS_REQUIRED) {
                 mouse_throw_error(attr, NULL, "Attribute (%"SVf") is required", slot);
             }
         }
@@ -350,7 +357,7 @@ mouse_class_initialize_object(pTHX_ SV* const meta, SV* const object, HV* const
     }
 
     if(triggers_queue){
-        len = AvFILLp(triggers_queue) + 1;
+        I32 const len = AvFILLp(triggers_queue) + 1;
         for(i = 0; i < len; i++){
             AV* const pair    = (AV*)AvARRAY(triggers_queue)[i];
             SV* const trigger = AvARRAY(pair)[0];
@@ -371,18 +378,7 @@ mouse_initialize_metaclass(pTHX_ SV* const klass) {
     SV* meta = get_metaclass(klass);
 
     if(!SvOK(meta)){
-        dSP;
-        PUSHMARK(SP);
-
-        EXTEND(SP, 2);
-        mPUSHp("Mouse::Meta::Class", sizeof("Mouse::Meta::Class")-1);
-        PUSHs(klass);
-        PUTBACK;
-
-        call_method("initialize", G_SCALAR);
-        SPAGAIN;
-        meta = POPs;
-        PUTBACK;
+        meta = mcall1s(newSVpvs_flags("Mouse::Meta::Class", SVs_TEMP), "initialize", klass);
     }
 
     return meta;
@@ -402,7 +398,7 @@ mouse_buildall(pTHX_ AV* const xc, SV* const object, SV* const args) {
         PUSHs(args);
         PUTBACK;
 
-        call_sv(AvARRAY(buildall)[i], G_VOID);
+        call_sv_safe(AvARRAY(buildall)[i], G_VOID);
 
         /* discard a scalar which G_VOID returns */
         SPAGAIN;
@@ -411,11 +407,65 @@ mouse_buildall(pTHX_ AV* const xc, SV* const object, SV* const args) {
     }
 }
 
+static AV*
+mouse_get_modifier_storage(pTHX_
+        SV* const meta,
+        enum mouse_modifier_t const m, SV* const name) {
+    static const char* const keys[] = {
+        "before",
+        "around",
+        "after",
+    };
+    SV* const key = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_method_modifiers", keys[m]));
+    SV* table;
+    SV* storage_ref;
+
+    must_defined(name, "a method name");
+
+    table = get_slot(meta, key);
+
+    if(!table){
+        /* $meta->{$key} = {} */
+        table = sv_2mortal(newRV_noinc((SV*)newHV()));
+        set_slot(meta, key, table);
+    }
+
+    storage_ref = get_slot(table, name);
+
+    if(!storage_ref){
+        storage_ref = sv_2mortal(newRV_noinc((SV*)newAV()));
+        set_slot(table, name, storage_ref);
+    }
+    else{
+        if(!IsArrayRef(storage_ref)){
+            croak("Modifier strorage for '%s' is not an ARRAY reference", keys[m]);
+        }
+    }
+
+    return (AV*)SvRV(storage_ref);
+}
+
+static void
+XS_Mouse_value_holder(pTHX_ CV* const cv PERL_UNUSED_DECL) {
+    dVAR; dXSARGS;
+    SV* const value = (SV*)XSANY.any_ptr;
+    assert(value);
+    PERL_UNUSED_VAR(items);
+    ST(0) = value;
+    XSRETURN(1);
+}
+
+DECL_BOOT(Mouse__Util);
+DECL_BOOT(Mouse__Util__TypeConstraints);
+DECL_BOOT(Mouse__Meta__Method__Accessor__XS);
+DECL_BOOT(Mouse__Meta__Attribute);
+
 MODULE = Mouse  PACKAGE = Mouse
 
 PROTOTYPES: DISABLE
 
 BOOT:
+{
     mouse_package   = newSVpvs_share("package");
     mouse_namespace = newSVpvs_share("namespace");
     mouse_methods   = newSVpvs_share("methods");
@@ -425,11 +475,11 @@ BOOT:
     mouse_get_attribute      = newSVpvs_share("get_attribute");
     mouse_get_attribute_list = newSVpvs_share("get_attribute_list");
 
-    MOUSE_CALL_BOOT(Mouse__Util);
-    MOUSE_CALL_BOOT(Mouse__Util__TypeConstraints);
-    MOUSE_CALL_BOOT(Mouse__Meta__Method__Accessor__XS);
-    MOUSE_CALL_BOOT(Mouse__Meta__Attribute);
-
+    CALL_BOOT(Mouse__Util);
+    CALL_BOOT(Mouse__Util__TypeConstraints);
+    CALL_BOOT(Mouse__Meta__Method__Accessor__XS);
+    CALL_BOOT(Mouse__Meta__Attribute);
+}
 
 MODULE = Mouse  PACKAGE = Mouse::Meta::Module
 
@@ -465,84 +515,64 @@ CODE:
         croak("No package name defined");
     }
 
-    SvGETMAGIC(name);
-    SvGETMAGIC(code);
-
-    if(!SvOK(name)){
-        mouse_throw_error(self, NULL, "You must define a method name");
-    }
-    if(!SvROK(code)){
-        mouse_throw_error(self, NULL, "You must define a CODE reference");
-    }
+    must_defined(name, "a method name");
+    must_ref    (code, "a CODE reference", SVt_NULL); /* any reftype is OK */
 
     code_ref = code;
     if(SvTYPE(SvRV(code_ref)) != SVt_PVCV){
         SV*  sv = code_ref;  /* used in tryAMAGICunDEREF */
         SV** sp = &sv;       /* used in tryAMAGICunDEREF */
         tryAMAGICunDEREF(to_cv); /* try \&{$code} */
-        if(!(SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV)){
-            mouse_throw_error(self, NULL, "You must pass a CODE reference to add_method");
-        }
+        must_ref(code, "a CODE reference", SVt_PVCV);
         code_ref = sv;
     }
 
     /*  *{$package . '::' . $name} -> *gv */
     gv = gv_fetchpv(form("%"SVf"::%"SVf, package, name), GV_ADDMULTI, SVt_PVCV);
-    if(GvCVu(gv)){ /* delete *slot{gv} to work around "redefine" warning */
-        SvREFCNT_dec(GvCV(gv));
-        GvCV(gv) = NULL;
-    }
-    sv_setsv_mg((SV*)gv, code_ref); /* *gv = $code_ref */
-
+    mouse_install_sub(aTHX_ gv, code_ref);
+    //CvMETHOD_on((CV*)SvRV(code_ref));
     (void)set_slot(methods, name, code); /* $self->{methods}{$name} = $code */
+}
 
-    /* name the CODE ref if it's anonymous */
-    {
-        CV* const code_entity = (CV*)SvRV(code_ref);
-        if(CvANON(code_entity)
-            && CvGV(code_entity) /* a cv under construction has no gv */ ){
-            HV* dbsub;
-
-            /* update %DB::sub to make NYTProf happy */
-            if((PL_perldb & (PERLDBf_SUBLINE|PERLDB_NAMEANON))
-                && PL_DBsub && (dbsub = GvHV(PL_DBsub))
-            ){
-                /* see Perl_newATTRSUB() in op.c */
-                SV* const subname = sv_newmortal();
-                HE* orig;
-
-                gv_efullname3(subname, CvGV(code_entity), NULL);
-                orig = hv_fetch_ent(dbsub, subname, FALSE, 0U);
-                if(orig){
-                    gv_efullname3(subname, gv, NULL);
-                    (void)hv_store_ent(dbsub, subname, HeVAL(orig), 0U);
-                    SvREFCNT_inc_simple_void_NN(HeVAL(orig));
-                }
-            }
-
-            CvGV(code_entity) = gv;
-            CvANON_off(code_entity);
-        }
-    }
+void
+add_class_accessor(SV* self, SV* name)
+CODE:
+{
+    SV* const klass = mouse_call0(self, mouse_name);
+    const char* fq_name = form("%"SVf"::%"SVf, klass, name);
+    STRLEN keylen;
+    const char* const key = SvPV_const(name, keylen);
+    mouse_simple_accessor_generate(aTHX_ fq_name, key, keylen,
+        XS_Mouse_inheritable_class_accessor, NULL, 0);
 }
 
 MODULE = Mouse  PACKAGE = Mouse::Meta::Class
 
 BOOT:
+{
+    CV* xsub;
+
     INSTALL_SIMPLE_READER(Class, roles);
     INSTALL_SIMPLE_PREDICATE_WITH_KEY(Class, is_anon_class, anon_serial_id);
     INSTALL_SIMPLE_READER(Class, is_immutable);
-    INSTALL_SIMPLE_READER_WITH_KEY(Class, __strict_constructor, strict_constructor);
+
+    INSTALL_INHERITABLE_CLASS_ACCESSOR(strict_constructor);
 
     INSTALL_CLASS_HOLDER(Class, method_metaclass,     "Mouse::Meta::Method");
     INSTALL_CLASS_HOLDER(Class, attribute_metaclass,  "Mouse::Meta::Attribute");
     INSTALL_CLASS_HOLDER(Class, constructor_class,    "Mouse::Meta::Method::Constructor::XS");
     INSTALL_CLASS_HOLDER(Class, destructor_class,     "Mouse::Meta::Method::Destructor::XS");
 
-    newCONSTSUB(gv_stashpvs("Mouse::Meta::Method::Constructor::XS", TRUE), "_generate_constructor",
-        newRV_inc((SV*)get_cvs("Mouse::Object::new", TRUE)));
-    newCONSTSUB(gv_stashpvs("Mouse::Meta::Method::Destructor::XS", TRUE), "_generate_destructor",
-        newRV_inc((SV*)get_cvs("Mouse::Object::DESTROY", TRUE)));
+    xsub = newXS("Mouse::Meta::Method::Constructor::XS::_generate_constructor",
+        XS_Mouse_value_holder, file);
+    CvXSUBANY(xsub).any_ptr
+        = newRV_inc((SV*)get_cvs("Mouse::Object::new", GV_ADD));
+
+    xsub = newXS("Mouse::Meta::Method::Destructor::XS::_generate_destructor",
+        XS_Mouse_value_holder, file);
+    CvXSUBANY(xsub).any_ptr
+        = newRV_inc((SV*)get_cvs("Mouse::Object::DESTROY", GV_ADD));
+}
 
 
 void
@@ -579,24 +609,46 @@ PPCODE:
     }
 }
 
-SV*
+void
 new_object(SV* meta, ...)
 CODE:
 {
     AV* const xc   = mouse_get_xc(aTHX_ meta);
     HV* const args = mouse_buildargs(aTHX_ meta, NULL, ax, items);
+    SV* object;
 
-    RETVAL = mouse_instance_create(aTHX_ MOUSE_xc_stash(xc));
-    mouse_class_initialize_object(aTHX_ meta, RETVAL, args, FALSE);
+    object = mouse_instance_create(aTHX_ MOUSE_xc_stash(xc));
+    mouse_class_initialize_object(aTHX_ meta, object, args, FALSE);
+    mouse_buildall(aTHX_ xc, object, sv_2mortal(newRV_inc((SV*)args))); /* BUILDALL */
+    ST(0) = object; /* because object is mortal, we should return it as is */
+    XSRETURN(1);
 }
-OUTPUT:
-    RETVAL
 
 void
-_initialize_object(SV* meta, SV* object, HV* args, bool ignore_triggers = FALSE)
+clone_object(SV* meta, SV* object, ...)
+CODE:
+{
+    AV* const xc   = mouse_get_xc(aTHX_ meta);
+    HV* const args = mouse_buildargs(aTHX_ meta, NULL, ax + 1, items - 1);
+    SV* proto;
+
+    if(!mouse_is_an_instance_of(aTHX_ MOUSE_xc_stash(xc), object)) {
+        mouse_throw_error(meta, object,
+            "You must pass an instance of the metaclass (%"SVf"), not (%"SVf")",
+            mcall0(meta, mouse_name), object);
+    }
+
+    proto = mouse_instance_clone(aTHX_ object);
+    mouse_class_initialize_object(aTHX_ meta, proto, args, TRUE);
+    ST(0) = proto; /* because object is mortal, we should return it as is */
+    XSRETURN(1);
+}
+
+void
+_initialize_object(SV* meta, SV* object, HV* args, bool is_cloning = FALSE)
 CODE:
 {
-    mouse_class_initialize_object(aTHX_ meta, object, args, ignore_triggers);
+    mouse_class_initialize_object(aTHX_ meta, object, args, is_cloning);
 }
 
 MODULE = Mouse  PACKAGE = Mouse::Meta::Role
@@ -607,9 +659,42 @@ BOOT:
 
     INSTALL_CLASS_HOLDER(Role, method_metaclass,  "Mouse::Meta::Role::Method");
 
+void
+add_before_modifier(SV* self, SV* name, SV* modifier)
+CODE:
+{
+    av_push(mouse_get_modifier_storage(aTHX_ self, (enum mouse_modifier_t)ix, name), newSVsv(modifier));
+}
+ALIAS:
+    add_before_method_modifier = MOUSE_M_BEFORE
+    add_around_method_modifier = MOUSE_M_AROUND
+    add_after_method_modifier  = MOUSE_M_AFTER
+
+void
+get_before_modifiers(SV* self, SV* name)
+ALIAS:
+    get_before_method_modifiers = MOUSE_M_BEFORE
+    get_around_method_modifiers = MOUSE_M_AROUND
+    get_after_method_modifiers  = MOUSE_M_AFTER
+PPCODE:
+{
+    AV* const storage = mouse_get_modifier_storage(aTHX_ self, (enum mouse_modifier_t)ix, name);
+    I32 const len     = av_len(storage) + 1;
+    if(GIMME_V == G_ARRAY) {
+        I32 i;
+        EXTEND(SP, len);
+        for(i = 0; i < len; i++){
+            PUSHs(*av_fetch(storage, i, TRUE));
+        }
+    }
+    else{
+        mPUSHi(len);
+    }
+}
+
 MODULE = Mouse  PACKAGE = Mouse::Object
 
-SV*
+void
 new(SV* klass, ...)
 CODE:
 {
@@ -617,6 +702,7 @@ CODE:
     AV* const xc   = mouse_get_xc(aTHX_ meta);
     UV const flags = MOUSE_xc_flags(xc);
     SV* args;
+    SV* object;
 
     /* BUILDARGS */
     if(flags & MOUSEf_XC_HAS_BUILDARGS){
@@ -628,9 +714,10 @@ CODE:
         for(i = 0; i < items; i++){
             PUSHs(ST(i));
         }
-        //SP += items;
+
         PUTBACK;
-        call_method("BUILDARGS", G_SCALAR);
+        call_method_safes("BUILDARGS", G_SCALAR);
+
         SPAGAIN;
         args = POPs;
         PUTBACK;
@@ -645,13 +732,12 @@ CODE:
     }
 
     /* new_object */
-    RETVAL = mouse_instance_create(aTHX_ MOUSE_xc_stash(xc));
-    mouse_class_initialize_object(aTHX_ meta, RETVAL, (HV*)SvRV(args), FALSE);
-
-    mouse_buildall(aTHX_ xc, RETVAL, args);
+    object = mouse_instance_create(aTHX_ MOUSE_xc_stash(xc));
+    mouse_class_initialize_object(aTHX_ meta, object, (HV*)SvRV(args), FALSE);
+    mouse_buildall(aTHX_ xc, object, args); /* BUILDALL */
+    ST(0) = object; /* because object is mortal, we should return it as is */
+    XSRETURN(1);
 }
-OUTPUT:
-    RETVAL
 
 void
 DESTROY(SV* object)
@@ -692,21 +778,21 @@ CODE:
 
     len      = AvFILLp(demolishall) + 1;
     if(len > 0){
-        GV* const statusvalue = gv_fetchpvs("?", 0, SVt_PV);
+        SV* const in_global_destruction = boolSV(PL_dirty);
+        SAVEI32(PL_statusvalue); /* local $? */
+        PL_statusvalue = 0;
 
-        if(statusvalue){ /* it can be NULL */
-            SAVESPTR(GvSV(statusvalue)); /* local $? */
-            GvSV(statusvalue) = sv_newmortal();
-        }
         SAVESPTR(ERRSV); /* local $@ */
-        ERRSV = newSVpvs_flags("", SVs_TEMP);
+        ERRSV = sv_newmortal();
+
+        EXTEND(SP, 2);
 
         for(i = 0; i < len; i++){
             SPAGAIN;
 
             PUSHMARK(SP);
-            XPUSHs(object);
-            XPUSHs(boolSV(PL_dirty));
+            PUSHs(object);
+            PUSHs(in_global_destruction);
             PUTBACK;
 
             call_sv(AvARRAY(demolishall)[i], G_VOID | G_EVAL);
@@ -747,8 +833,6 @@ CODE:
     SV* const meta = get_metaclass(self);
     AV* const xc   = mouse_get_xc(aTHX_ meta);
 
-    if(!IsHashRef(args)){
-        croak("You must pass a HASH reference to BUILDALL");
-    }
+    must_ref(args, "a HASH reference to BUILDALL", SVt_PVHV);
     mouse_buildall(aTHX_ xc, self, args);
 }