Example #1
0
int ClassDeclaration::isBaseOf2(ClassDeclaration *cd)
{
    if (!cd)
        return 0;
    //printf("ClassDeclaration::isBaseOf2(this = '%s', cd = '%s')\n", toChars(), cd->toChars());
    for (size_t i = 0; i < cd->baseclasses->dim; i++)
    {   BaseClass *b = (*cd->baseclasses)[i];

        if (b->base == this || isBaseOf2(b->base))
            return 1;
    }
    return 0;
}
Example #2
0
void InterfaceDeclaration::semantic(Scope *sc)
{
    //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);
    if (inuse)
        return;

    if (!sc)
        sc = scope;
    if (!parent && sc->parent && !sc->parent->isModule())
        parent = sc->parent;

    type = type->semantic(loc, sc);

    if (type->ty == Tclass && ((TypeClass *)type)->sym != this)
    {
        TemplateInstance *ti = ((TypeClass *)type)->sym->isInstantiated();
        if (ti && ti->errors)
            ((TypeClass *)type)->sym = this;
    }

    if (!members)                       // if forward reference
    {   //printf("\tinterface '%s' is forward referenced\n", toChars());
        return;
    }
    if (symtab)                 // if already done
    {   if (!scope)
            return;
    }
    else
        symtab = new DsymbolTable();

    Scope *scx = NULL;
    if (scope)
    {
        sc = scope;
        scx = scope;            // save so we don't make redundant copies
        scope = NULL;
    }

    int errors = global.errors;

    if (sc->stc & STCdeprecated)
    {
        isdeprecated = true;
    }
    userAttribDecl = sc->userAttribDecl;

    // Expand any tuples in baseclasses[]
    for (size_t i = 0; i < baseclasses->dim; )
    {
        // Ungag errors when not speculative
        Ungag ungag = ungagSpeculative();

        BaseClass *b = (*baseclasses)[i];
        b->type = b->type->semantic(loc, sc);

        Type *tb = b->type->toBasetype();
        if (tb->ty == Ttuple)
        {   TypeTuple *tup = (TypeTuple *)tb;
            PROT protection = b->protection;
            baseclasses->remove(i);
            size_t dim = Parameter::dim(tup->arguments);
            for (size_t j = 0; j < dim; j++)
            {   Parameter *arg = Parameter::getNth(tup->arguments, j);
                b = new BaseClass(arg->type, protection);
                baseclasses->insert(i + j, b);
            }
        }
        else
            i++;
    }

    if (!baseclasses->dim && sc->linkage == LINKcpp)
        cpp = 1;

    // Check for errors, handle forward references
    for (size_t i = 0; i < baseclasses->dim; )
    {
        // Ungag errors when not speculative
        Ungag ungag = ungagSpeculative();

        BaseClass *b = (*baseclasses)[i];
        b->type = b->type->semantic(loc, sc);

        Type *tb = b->type->toBasetype();
        TypeClass *tc = (tb->ty == Tclass) ? (TypeClass *)tb : NULL;
        if (!tc || !tc->sym->isInterfaceDeclaration())
        {
            if (b->type != Type::terror)
                error("base type must be interface, not %s", b->type->toChars());
            baseclasses->remove(i);
            continue;
        }
        else
        {
            // Check for duplicate interfaces
            for (size_t j = 0; j < i; j++)
            {
                BaseClass *b2 = (*baseclasses)[j];
                if (b2->base == tc->sym)
                    error("inherits from duplicate interface %s", b2->base->toChars());
            }

            b->base = tc->sym;
            if (b->base == this || isBaseOf2(b->base))
            {
                error("circular inheritance of interface");
                baseclasses->remove(i);
                continue;
            }
            if (b->base->scope)
            {
                // Try to resolve forward reference
                b->base->semantic(NULL);
            }
            if (!b->base->symtab || b->base->scope || b->base->inuse)
            {
                //error("forward reference of base class %s", baseClass->toChars());
                // Forward reference of base, try again later
                //printf("\ttry later, forward reference of base %s\n", b->base->toChars());
                scope = scx ? scx : sc->copy();
                scope->setNoFree();
                scope->module->addDeferredSemantic(this);
                return;
            }
        }
#if 0
        // Inherit const/invariant from base class
        storage_class |= b->base->storage_class & STC_TYPECTOR;
#endif
        i++;
    }
    if (doAncestorsSemantic == SemanticIn)
        doAncestorsSemantic = SemanticDone;

    interfaces_dim = baseclasses->dim;
    interfaces = baseclasses->tdata();

    interfaceSemantic(sc);

    if (vtblOffset())
        vtbl.push(this);                // leave room at vtbl[0] for classinfo

    // Cat together the vtbl[]'s from base interfaces
    for (size_t i = 0; i < interfaces_dim; i++)
    {   BaseClass *b = interfaces[i];

        // Skip if b has already appeared
        for (size_t k = 0; k < i; k++)
        {
            if (b == interfaces[k])
                goto Lcontinue;
        }

        // Copy vtbl[] from base class
        if (b->base->vtblOffset())
        {   size_t d = b->base->vtbl.dim;
            if (d > 1)
            {
                vtbl.reserve(d - 1);
                for (size_t j = 1; j < d; j++)
                    vtbl.push(b->base->vtbl[j]);
            }
        }
        else
        {
            vtbl.append(&b->base->vtbl);
        }

      Lcontinue:
        ;
    }

    protection = sc->protection;
    storage_class |= sc->stc & STC_TYPECTOR;

    for (size_t i = 0; i < members->dim; i++)
    {
        Dsymbol *s = (*members)[i];
        s->addMember(sc, this, 1);
    }

    sc = sc->push(this);
    sc->stc &= STCsafe | STCtrusted | STCsystem;
    sc->parent = this;
    if (com)
        sc->linkage = LINKwindows;
    else if (cpp)
        sc->linkage = LINKcpp;
    sc->structalign = STRUCTALIGN_DEFAULT;
    sc->protection = PROTpublic;
    sc->explicitProtection = 0;
//    structalign = sc->structalign;
    sc->offset = Target::ptrsize * 2;
    sc->userAttribDecl = NULL;
    structsize = sc->offset;
    inuse++;

    /* Set scope so if there are forward references, we still might be able to
     * resolve individual members like enums.
     */
    for (size_t i = 0; i < members->dim; i++)
    {   Dsymbol *s = (*members)[i];
        /* There are problems doing this in the general case because
         * Scope keeps track of things like 'offset'
         */
        if (s->isEnumDeclaration() || (s->isAggregateDeclaration() && s->ident))
        {
            //printf("setScope %s %s\n", s->kind(), s->toChars());
            s->setScope(sc);
        }
    }

    for (size_t i = 0; i < members->dim; i++)
    {
        Dsymbol *s = (*members)[i];
        s->importAll(sc);
    }

    for (size_t i = 0; i < members->dim; i++)
    {
        Dsymbol *s = (*members)[i];

        // Ungag errors when not speculative
        Ungag ungag = ungagSpeculative();
        s->semantic(sc);
    }

    if (global.errors != errors)
    {   // The type is no good.
        type = Type::terror;
    }

    inuse--;
    //members->print();
    sc->pop();
    //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);

#if 0
    if (type->ty == Tclass && ((TypeClass *)type)->sym != this)
    {
        printf("this = %p %s\n", this, this->toChars());
        printf("type = %d sym = %p\n", type->ty, ((TypeClass *)type)->sym);
      }
#endif
    assert(type->ty != Tclass || ((TypeClass *)type)->sym == this);
}
Example #3
0
void InterfaceDeclaration::semantic(Scope *sc)
{
    //printf("InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);
    if (inuse)
        return;

    if (!sc)
        sc = scope;
    if (!parent && sc->parent && !sc->parent->isModule())
        parent = sc->parent;

    type = type->semantic(loc, sc);
    handle = type;

    if (!members)                       // if forward reference
    {   //printf("\tinterface '%s' is forward referenced\n", toChars());
        return;
    }
    if (symtab)                 // if already done
    {   if (!scope)
            return;
    }
    else
        symtab = new DsymbolTable();

    Scope *scx = NULL;
    if (scope)
    {   sc = scope;
        scx = scope;            // save so we don't make redundant copies
        scope = NULL;
    }

#if IN_GCC
    if (attributes)
        attributes->append(sc->attributes);
    else
        attributes = sc->attributes;
#endif

    if (sc->stc & STCdeprecated)
    {
        isdeprecated = 1;
    }

    // Expand any tuples in baseclasses[]
    for (size_t i = 0; i < baseclasses->dim; )
    {   BaseClass *b = baseclasses->tdata()[0];
        b->type = b->type->semantic(loc, sc);
        Type *tb = b->type->toBasetype();

        if (tb->ty == Ttuple)
        {   TypeTuple *tup = (TypeTuple *)tb;
            enum PROT protection = b->protection;
            baseclasses->remove(i);
            size_t dim = Parameter::dim(tup->arguments);
            for (size_t j = 0; j < dim; j++)
            {   Parameter *arg = Parameter::getNth(tup->arguments, j);
                b = new BaseClass(arg->type, protection);
                baseclasses->insert(i + j, b);
            }
        }
        else
            i++;
    }

    if (!baseclasses->dim && sc->linkage == LINKcpp)
        cpp = 1;

    // Check for errors, handle forward references
    for (size_t i = 0; i < baseclasses->dim; )
    {   TypeClass *tc;
        BaseClass *b;
        Type *tb;

        b = baseclasses->tdata()[i];
        b->type = b->type->semantic(loc, sc);
        tb = b->type->toBasetype();
        if (tb->ty == Tclass)
            tc = (TypeClass *)tb;
        else
            tc = NULL;
        if (!tc || !tc->sym->isInterfaceDeclaration())
        {
            error("base type must be interface, not %s", b->type->toChars());
            baseclasses->remove(i);
            continue;
        }
        else
        {
            // Check for duplicate interfaces
            for (size_t j = 0; j < i; j++)
            {
                BaseClass *b2 = baseclasses->tdata()[j];
                if (b2->base == tc->sym)
                    error("inherits from duplicate interface %s", b2->base->toChars());
            }

            b->base = tc->sym;
            if (b->base == this || isBaseOf2(b->base))
            {
                error("circular inheritance of interface");
                baseclasses->remove(i);
                continue;
            }
            if (!b->base->symtab)
            {   // Try to resolve forward reference
                if (sc->mustsemantic && b->base->scope)
                    b->base->semantic(NULL);
            }
            if (!b->base->symtab || b->base->scope || b->base->inuse)
            {
                //error("forward reference of base class %s", baseClass->toChars());
                // Forward reference of base, try again later
                //printf("\ttry later, forward reference of base %s\n", b->base->toChars());
                scope = scx ? scx : new Scope(*sc);
                scope->setNoFree();
                scope->module->addDeferredSemantic(this);
                return;
            }
        }
#if 0
        // Inherit const/invariant from base class
        storage_class |= b->base->storage_class & STC_TYPECTOR;
#endif
        i++;
    }

    interfaces_dim = baseclasses->dim;
    interfaces = baseclasses->tdata();

    interfaceSemantic(sc);

    if (vtblOffset())
        vtbl.push(this);                // leave room at vtbl[0] for classinfo

    // Cat together the vtbl[]'s from base interfaces
    for (size_t i = 0; i < interfaces_dim; i++)
    {   BaseClass *b = interfaces[i];

        // Skip if b has already appeared
        for (int k = 0; k < i; k++)
        {
            if (b == interfaces[k])
                goto Lcontinue;
        }

        // Copy vtbl[] from base class
        if (b->base->vtblOffset())
        {   int d = b->base->vtbl.dim;
            if (d > 1)
            {
                vtbl.reserve(d - 1);
                for (int j = 1; j < d; j++)
                    vtbl.push(b->base->vtbl.tdata()[j]);
            }
        }
        else
        {
            vtbl.append(&b->base->vtbl);
        }

      Lcontinue:
        ;
    }

    protection = sc->protection;
    storage_class |= sc->stc & STC_TYPECTOR;

    for (size_t i = 0; i < members->dim; i++)
    {
        Dsymbol *s = members->tdata()[i];
        s->addMember(sc, this, 1);
    }

    sc = sc->push(this);
    sc->stc &= ~(STCfinal | STCauto | STCscope | STCstatic |
                 STCabstract | STCdeprecated | STC_TYPECTOR | STCtls | STCgshared);
    sc->stc |= storage_class & STC_TYPECTOR;
#if IN_GCC
    sc->attributes = NULL;
#endif
    sc->parent = this;
    if (isCOMinterface())
        sc->linkage = LINKwindows;
    else if (isCPPinterface())
        sc->linkage = LINKcpp;
    sc->structalign = 8;
    structalign = sc->structalign;
    sc->offset = PTRSIZE * 2;
    inuse++;
    for (size_t i = 0; i < members->dim; i++)
    {
        Dsymbol *s = members->tdata()[i];
        s->semantic(sc);
    }
    inuse--;
    //members->print();
    sc->pop();
    //printf("-InterfaceDeclaration::semantic(%s), type = %p\n", toChars(), type);
}