int InterfaceDeclaration::vtblOffset()
{
if (isCOMinterface() || isCPPinterface())
return 0;
return 1;
}
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);
}
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;
}
int errors = global.errors;
if (sc->stc & STCdeprecated)
{
isdeprecated = true;
}
userAttributes = sc->userAttributes;
// Expand any tuples in baseclasses[]
for (size_t i = 0; i < baseclasses->dim; )
{ BaseClass *b = (*baseclasses)[i];
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)[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())
{ 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->symtab)
{ // Try to resolve forward reference
if (doAncestorsSemantic == SemanticIn && 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++;
}
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 (isCOMinterface())
sc->linkage = LINKwindows;
else if (isCPPinterface())
sc->linkage = LINKcpp;
sc->structalign = STRUCTALIGN_DEFAULT;
sc->protection = PROTpublic;
sc->explicitProtection = 0;
// structalign = sc->structalign;
sc->offset = Target::ptrsize * 2;
sc->userAttributes = 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->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);
}
void InterfaceDeclaration::toObjFile(int multiobj)
{
enum_SC scclass;
//printf("InterfaceDeclaration::toObjFile('%s')\n", toChars());
if (type->ty == Terror)
{ error("had semantic errors when compiling");
return;
}
if (!members)
return;
if (global.params.symdebug)
toDebug(this);
scclass = SCglobal;
if (isInstantiated())
scclass = SCcomdat;
// Put out the members
for (size_t i = 0; i < members->dim; i++)
{ Dsymbol *member = (*members)[i];
member->toObjFile(0);
}
// Generate C symbols
toSymbol(this);
//////////////////////////////////////////////
// Put out the TypeInfo
type->genTypeInfo(NULL);
type->vtinfo->toObjFile(multiobj);
//////////////////////////////////////////////
// Put out the ClassInfo
csym->Sclass = scclass;
csym->Sfl = FLdata;
/* The layout is:
{
void **vptr;
monitor_t monitor;
byte[] initializer; // static initialization data
char[] name; // class name
void *[] vtbl;
Interface[] interfaces;
Object *base; // base class
void *destructor;
void *invariant; // class invariant
uint flags;
void *deallocator;
OffsetTypeInfo[] offTi;
void *defaultConstructor;
//const(MemberInfo[]) function(string) xgetMembers; // module getMembers() function
void* xgetRTInfo;
//TypeInfo typeinfo;
}
*/
dt_t *dt = NULL;
if (Type::typeinfoclass)
dtxoff(&dt, Type::typeinfoclass->toVtblSymbol(), 0, TYnptr); // vtbl for ClassInfo
else
dtsize_t(&dt, 0); // BUG: should be an assert()
dtsize_t(&dt, 0); // monitor
// initializer[]
dtsize_t(&dt, 0); // size
dtsize_t(&dt, 0); // initializer
// name[]
const char *name = toPrettyChars();
size_t namelen = strlen(name);
dtsize_t(&dt, namelen);
dtabytes(&dt, TYnptr, 0, namelen + 1, name);
// vtbl[]
dtsize_t(&dt, 0);
dtsize_t(&dt, 0);
// (*vtblInterfaces)[]
unsigned offset;
dtsize_t(&dt, vtblInterfaces->dim);
if (vtblInterfaces->dim)
{
offset = global.params.isLP64 ? CLASSINFO_SIZE_64 : CLASSINFO_SIZE; // must be ClassInfo.size
if (Type::typeinfoclass)
{
if (Type::typeinfoclass->structsize != offset)
{
error("mismatch between dmd and object.d or object.di found. Check installation and import paths with -v compiler switch.");
fatal();
}
}
dtxoff(&dt, csym, offset, TYnptr); // (*)
}
else
{ offset = 0;
dtsize_t(&dt, 0);
}
// base
assert(!baseClass);
dtsize_t(&dt, 0);
// dtor
dtsize_t(&dt, 0);
// invariant
dtsize_t(&dt, 0);
// flags
ClassFlags::Type flags = ClassFlags::hasOffTi | ClassFlags::hasTypeInfo;
if (isCOMinterface()) flags |= ClassFlags::isCOMclass;
dtsize_t(&dt, flags);
// deallocator
dtsize_t(&dt, 0);
// offTi[]
dtsize_t(&dt, 0);
dtsize_t(&dt, 0); // null for now, fix later
// defaultConstructor
dtsize_t(&dt, 0);
// xgetMembers
//dtsize_t(&dt, 0);
// xgetRTInfo
// xgetRTInfo
if (getRTInfo)
getRTInfo->toDt(&dt);
else
dtsize_t(&dt, 0); // no pointers
//dtxoff(&dt, toSymbol(type->vtinfo), 0, TYnptr); // typeinfo
//////////////////////////////////////////////
// Put out (*vtblInterfaces)[]. Must immediately follow csym, because
// of the fixup (*)
offset += vtblInterfaces->dim * (4 * Target::ptrsize);
for (size_t i = 0; i < vtblInterfaces->dim; i++)
{ BaseClass *b = (*vtblInterfaces)[i];
ClassDeclaration *id = b->base;
// ClassInfo
dtxoff(&dt, toSymbol(id), 0, TYnptr);
// vtbl[]
dtsize_t(&dt, 0);
dtsize_t(&dt, 0);
// this offset
dtsize_t(&dt, b->offset);
}
csym->Sdt = dt;
out_readonly(csym);
outdata(csym);
if (isExport())
objmod->export_symbol(csym,0);
}