void StructDeclaration::semantic(Scope *sc)
{
Scope *sc2;
//printf("+StructDeclaration::semantic(this=%p, %s '%s', sizeok = %d)\n", this, parent->toChars(), toChars(), sizeok);
//static int count; if (++count == 20) halt();
assert(type);
if (!members) // if opaque declaration
{
return;
}
if (symtab)
{ if (sizeok == SIZEOKdone || !scope)
{ //printf("already completed\n");
scope = NULL;
return; // semantic() already completed
}
}
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;
unsigned dprogress_save = Module::dprogress;
parent = sc->parent;
type = type->semantic(loc, sc);
handle = type;
protection = sc->protection;
alignment = sc->structalign;
storage_class |= sc->stc;
if (sc->stc & STCdeprecated)
isdeprecated = true;
assert(!isAnonymous());
if (sc->stc & STCabstract)
error("structs, unions cannot be abstract");
userAttributes = sc->userAttributes;
if (sizeok == SIZEOKnone) // if not already done the addMember step
{
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
//printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars());
s->addMember(sc, this, 1);
}
}
sizeok = SIZEOKnone;
sc2 = sc->push(this);
sc2->stc &= STCsafe | STCtrusted | STCsystem;
sc2->parent = this;
if (isUnionDeclaration())
sc2->inunion = 1;
sc2->protection = PROTpublic;
sc2->explicitProtection = 0;
sc2->structalign = STRUCTALIGN_DEFAULT;
sc2->userAttributes = NULL;
/* 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("struct: setScope %s %s\n", s->kind(), s->toChars());
s->setScope(sc2);
}
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
/* If this is the last member, see if we can finish setting the size.
* This could be much better - finish setting the size after the last
* field was processed. The problem is the chicken-and-egg determination
* of when that is. See Bugzilla 7426 for more info.
*/
if (i + 1 == members->dim)
{
if (sizeok == SIZEOKnone && s->isAliasDeclaration())
finalizeSize(sc2);
}
// Ungag errors when not speculative
unsigned oldgag = global.gag;
if (global.isSpeculativeGagging() && !isSpeculative())
{
global.gag = 0;
}
s->semantic(sc2);
global.gag = oldgag;
}
finalizeSize(sc2);
if (sizeok == SIZEOKfwd)
{ // semantic() failed because of forward references.
// Unwind what we did, and defer it for later
for (size_t i = 0; i < fields.dim; i++)
{ Dsymbol *s = fields[i];
VarDeclaration *vd = s->isVarDeclaration();
if (vd)
vd->offset = 0;
}
fields.setDim(0);
structsize = 0;
alignsize = 0;
// structalign = 0;
scope = scx ? scx : new Scope(*sc);
scope->setNoFree();
scope->module->addDeferredSemantic(this);
Module::dprogress = dprogress_save;
//printf("\tdeferring %s\n", toChars());
return;
}
Module::dprogress++;
//printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars());
// Determine if struct is all zeros or not
zeroInit = 1;
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = fields[i];
VarDeclaration *vd = s->isVarDeclaration();
if (vd && !vd->isDataseg())
{
if (vd->init)
{
// Should examine init to see if it is really all 0's
zeroInit = 0;
break;
}
else
{
if (!vd->type->isZeroInit(loc))
{
zeroInit = 0;
break;
}
}
}
}
#if DMDV1
/* This doesn't work for DMDV2 because (ref S) and (S) parameter
* lists will overload the same.
*/
/* The TypeInfo_Struct is expecting an opEquals and opCmp with
* a parameter that is a pointer to the struct. But if there
* isn't one, but is an opEquals or opCmp with a value, write
* another that is a shell around the value:
* int opCmp(struct *p) { return opCmp(*p); }
*/
TypeFunction *tfeqptr;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, handle, Id::p, NULL);
arguments->push(arg);
tfeqptr = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeqptr = (TypeFunction *)tfeqptr->semantic(Loc(), sc);
}
TypeFunction *tfeq;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, type, NULL, NULL);
arguments->push(arg);
tfeq = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeq = (TypeFunction *)tfeq->semantic(Loc(), sc);
}
Identifier *id = Id::eq;
for (int i = 0; i < 2; i++)
{
Dsymbol *s = search_function(this, id);
FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL;
if (fdx)
{ FuncDeclaration *fd = fdx->overloadExactMatch(tfeqptr);
if (!fd)
{ fd = fdx->overloadExactMatch(tfeq);
if (fd)
{ // Create the thunk, fdptr
FuncDeclaration *fdptr = new FuncDeclaration(loc, loc, fdx->ident, STCundefined, tfeqptr);
Expression *e = new IdentifierExp(loc, Id::p);
e = new PtrExp(loc, e);
Expressions *args = new Expressions();
args->push(e);
e = new IdentifierExp(loc, id);
e = new CallExp(loc, e, args);
fdptr->fbody = new ReturnStatement(loc, e);
ScopeDsymbol *s = fdx->parent->isScopeDsymbol();
assert(s);
s->members->push(fdptr);
fdptr->addMember(sc, s, 1);
fdptr->semantic(sc2);
}
}
}
id = Id::cmp;
}
#endif
#if DMDV2
dtor = buildDtor(sc2);
postblit = buildPostBlit(sc2);
cpctor = buildCpCtor(sc2);
buildOpAssign(sc2);
buildOpEquals(sc2);
#endif
inv = buildInv(sc2);
sc2->pop();
/* Look for special member functions.
*/
#if DMDV2
ctor = search(Loc(), Id::ctor, 0);
#endif
aggNew = (NewDeclaration *)search(Loc(), Id::classNew, 0);
aggDelete = (DeleteDeclaration *)search(Loc(), Id::classDelete, 0);
TypeTuple *tup = type->toArgTypes();
size_t dim = tup->arguments->dim;
if (dim >= 1)
{ assert(dim <= 2);
arg1type = (*tup->arguments)[0]->type;
if (dim == 2)
arg2type = (*tup->arguments)[1]->type;
}
if (sc->func)
{
semantic2(sc);
semantic3(sc);
}
if (global.errors != errors)
{ // The type is no good.
type = Type::terror;
}
if (deferred && !global.gag)
{
deferred->semantic2(sc);
deferred->semantic3(sc);
}
#if 0
if (type->ty == Tstruct && ((TypeStruct *)type)->sym != this)
{
printf("this = %p %s\n", this, this->toChars());
printf("type = %d sym = %p\n", type->ty, ((TypeStruct *)type)->sym);
}
#endif
assert(type->ty != Tstruct || ((TypeStruct *)type)->sym == this);
}
void StructDeclaration::semantic(Scope *sc)
{
Scope *sc2;
//printf("+StructDeclaration::semantic(this=%p, '%s', sizeok = %d)\n", this, toChars(), sizeok);
//static int count; if (++count == 20) halt();
assert(type);
if (!members) // if forward reference
return;
if (symtab)
{ if (sizeok == 1 || !scope)
{ //printf("already completed\n");
scope = NULL;
return; // semantic() already completed
}
}
else
symtab = new DsymbolTable();
Scope *scx = NULL;
if (scope)
{ sc = scope;
scx = scope; // save so we don't make redundant copies
scope = NULL;
}
unsigned dprogress_save = Module::dprogress;
#ifdef IN_GCC
methods.setDim(0);
#endif
parent = sc->parent;
type = type->semantic(loc, sc);
#if STRUCTTHISREF
handle = type;
#else
handle = type->pointerTo();
#endif
structalign = sc->structalign;
protection = sc->protection;
if (sc->stc & STCdeprecated)
isdeprecated = 1;
assert(!isAnonymous());
if (sc->stc & STCabstract)
error("structs, unions cannot be abstract");
#if DMDV2
if (storage_class & STCimmutable)
type = type->invariantOf();
else if (storage_class & STCconst)
type = type->constOf();
#endif
#if IN_GCC
if (attributes)
attributes->append(sc->attributes);
else
attributes = sc->attributes;
#endif
if (sizeok == 0) // if not already done the addMember step
{
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (Dsymbol *)members->data[i];
//printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars());
s->addMember(sc, this, 1);
}
}
sizeok = 0;
sc2 = sc->push(this);
sc2->stc = 0;
#if IN_GCC
sc2->attributes = NULL;
#endif
sc2->parent = this;
if (isUnionDeclaration())
sc2->inunion = 1;
sc2->protection = PROTpublic;
sc2->explicitProtection = 0;
size_t members_dim = members->dim;
/* 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 = (Dsymbol *)members->data[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(sc2);
}
}
for (size_t i = 0; i < members_dim; i++)
{
Dsymbol *s = (Dsymbol *)members->data[i];
s->semantic(sc2);
#if 0
if (sizeok == 2)
{ //printf("forward reference\n");
break;
}
#endif
}
#if DMDV1
/* This doesn't work for DMDV2 because (ref S) and (S) parameter
* lists will overload the same.
*/
/* The TypeInfo_Struct is expecting an opEquals and opCmp with
* a parameter that is a pointer to the struct. But if there
* isn't one, but is an opEquals or opCmp with a value, write
* another that is a shell around the value:
* int opCmp(struct *p) { return opCmp(*p); }
*/
TypeFunction *tfeqptr;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, handle, Id::p, NULL);
arguments->push(arg);
tfeqptr = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeqptr = (TypeFunction *)tfeqptr->semantic(0, sc);
}
TypeFunction *tfeq;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, type, NULL, NULL);
arguments->push(arg);
tfeq = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeq = (TypeFunction *)tfeq->semantic(0, sc);
}
Identifier *id = Id::eq;
for (int i = 0; i < 2; i++)
{
Dsymbol *s = search_function(this, id);
FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL;
if (fdx)
{ FuncDeclaration *fd = fdx->overloadExactMatch(tfeqptr);
if (!fd)
{ fd = fdx->overloadExactMatch(tfeq);
if (fd)
{ // Create the thunk, fdptr
FuncDeclaration *fdptr = new FuncDeclaration(loc, loc, fdx->ident, STCundefined, tfeqptr);
Expression *e = new IdentifierExp(loc, Id::p);
e = new PtrExp(loc, e);
Expressions *args = new Expressions();
args->push(e);
e = new IdentifierExp(loc, id);
e = new CallExp(loc, e, args);
fdptr->fbody = new ReturnStatement(loc, e);
ScopeDsymbol *s = fdx->parent->isScopeDsymbol();
assert(s);
s->members->push(fdptr);
fdptr->addMember(sc, s, 1);
fdptr->semantic(sc2);
}
}
}
id = Id::cmp;
}
#endif
#if DMDV2
/* Try to find the opEquals function. Build it if necessary.
*/
TypeFunction *tfeqptr;
{ // bool opEquals(const T*) const;
Parameters *parameters = new Parameters;
#if STRUCTTHISREF
// bool opEquals(ref const T) const;
Parameter *param = new Parameter(STCref, type->constOf(), NULL, NULL);
#else
// bool opEquals(const T*) const;
Parameter *param = new Parameter(STCin, type->pointerTo(), NULL, NULL);
#endif
parameters->push(param);
tfeqptr = new TypeFunction(parameters, Type::tbool, 0, LINKd);
tfeqptr->mod = MODconst;
tfeqptr = (TypeFunction *)tfeqptr->semantic(0, sc2);
Dsymbol *s = search_function(this, Id::eq);
FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL;
if (fdx)
{
eq = fdx->overloadExactMatch(tfeqptr);
if (!eq)
fdx->error("type signature should be %s not %s", tfeqptr->toChars(), fdx->type->toChars());
}
TemplateDeclaration *td = s ? s->isTemplateDeclaration() : NULL;
// BUG: should also check that td is a function template, not just a template
if (!eq && !td)
eq = buildOpEquals(sc2);
}
dtor = buildDtor(sc2);
postblit = buildPostBlit(sc2);
cpctor = buildCpCtor(sc2);
buildOpAssign(sc2);
#endif
sc2->pop();
if (sizeok == 2)
{ // semantic() failed because of forward references.
// Unwind what we did, and defer it for later
fields.setDim(0);
structsize = 0;
alignsize = 0;
structalign = 0;
scope = scx ? scx : new Scope(*sc);
scope->setNoFree();
scope->module->addDeferredSemantic(this);
Module::dprogress = dprogress_save;
//printf("\tdeferring %s\n", toChars());
return;
}
// 0 sized struct's are set to 1 byte
if (structsize == 0)
{
structsize = 1;
alignsize = 1;
}
// Round struct size up to next alignsize boundary.
// This will ensure that arrays of structs will get their internals
// aligned properly.
structsize = (structsize + alignsize - 1) & ~(alignsize - 1);
sizeok = 1;
Module::dprogress++;
//printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars());
// Determine if struct is all zeros or not
zeroInit = 1;
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = (Dsymbol *)fields.data[i];
VarDeclaration *vd = s->isVarDeclaration();
if (vd && !vd->isDataseg())
{
if (vd->init)
{
// Should examine init to see if it is really all 0's
zeroInit = 0;
break;
}
else
{
if (!vd->type->isZeroInit(loc))
{
zeroInit = 0;
break;
}
}
}
}
/* Look for special member functions.
*/
#if DMDV2
ctor = search(0, Id::ctor, 0);
#endif
inv = (InvariantDeclaration *)search(0, Id::classInvariant, 0);
aggNew = (NewDeclaration *)search(0, Id::classNew, 0);
aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0);
if (sc->func)
{
semantic2(sc);
semantic3(sc);
}
}
void StructDeclaration::semantic(Scope *sc)
{
//printf("+StructDeclaration::semantic(this=%p, %s '%s', sizeok = %d)\n", this, parent->toChars(), toChars(), sizeok);
//static int count; if (++count == 20) halt();
if (semanticRun >= PASSsemanticdone)
return;
unsigned dprogress_save = Module::dprogress;
int errors = global.errors;
Scope *scx = NULL;
if (scope)
{
sc = scope;
scx = scope; // save so we don't make redundant copies
scope = NULL;
}
if (!parent)
{
assert(sc->parent && sc->func);
parent = sc->parent;
}
assert(parent && !isAnonymous());
type = type->semantic(loc, sc);
if (type->ty == Tstruct && ((TypeStruct *)type)->sym != this)
{
TemplateInstance *ti = ((TypeStruct *)type)->sym->isInstantiated();
if (ti && isError(ti))
((TypeStruct *)type)->sym = this;
}
// Ungag errors when not speculative
Ungag ungag = ungagSpeculative();
if (semanticRun == PASSinit)
{
protection = sc->protection;
alignment = sc->structalign;
storage_class |= sc->stc;
if (storage_class & STCdeprecated)
isdeprecated = true;
if (storage_class & STCabstract)
error("structs, unions cannot be abstract");
userAttribDecl = sc->userAttribDecl;
}
else if (symtab)
{
if (sizeok == SIZEOKdone || !scx)
{
semanticRun = PASSsemanticdone;
return;
}
}
semanticRun = PASSsemantic;
if (!members) // if opaque declaration
{
semanticRun = PASSsemanticdone;
return;
}
if (!symtab)
symtab = new DsymbolTable();
if (sizeok == SIZEOKnone) // if not already done the addMember step
{
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
//printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars());
s->addMember(sc, this, 1);
}
}
sizeok = SIZEOKnone;
Scope *sc2 = sc->push(this);
sc2->stc &= STCsafe | STCtrusted | STCsystem;
sc2->parent = this;
if (isUnionDeclaration())
sc2->inunion = 1;
sc2->protection = Prot(PROTpublic);
sc2->explicitProtection = 0;
sc2->structalign = STRUCTALIGN_DEFAULT;
sc2->userAttribDecl = NULL;
/* 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];
//printf("struct: setScope %s %s\n", s->kind(), s->toChars());
s->setScope(sc2);
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->importAll(sc2);
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
/* If this is the last member, see if we can finish setting the size.
* This could be much better - finish setting the size after the last
* field was processed. The problem is the chicken-and-egg determination
* of when that is. See Bugzilla 7426 for more info.
*/
if (i + 1 == members->dim)
{
if (sizeok == SIZEOKnone && s->isAliasDeclaration())
finalizeSize(sc2);
}
s->semantic(sc2);
}
finalizeSize(sc2);
if (sizeok == SIZEOKfwd)
{
// semantic() failed because of forward references.
// Unwind what we did, and defer it for later
for (size_t i = 0; i < fields.dim; i++)
{
VarDeclaration *vd = fields[i];
vd->offset = 0;
}
fields.setDim(0);
structsize = 0;
alignsize = 0;
scope = scx ? scx : sc->copy();
scope->setNoFree();
scope->module->addDeferredSemantic(this);
Module::dprogress = dprogress_save;
//printf("\tdeferring %s\n", toChars());
return;
}
Module::dprogress++;
semanticRun = PASSsemanticdone;
//printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars());
// Determine if struct is all zeros or not
zeroInit = 1;
for (size_t i = 0; i < fields.dim; i++)
{
VarDeclaration *vd = fields[i];
if (!vd->isDataseg())
{
if (vd->init)
{
// Should examine init to see if it is really all 0's
zeroInit = 0;
break;
}
else
{
if (!vd->type->isZeroInit(loc))
{
zeroInit = 0;
break;
}
}
}
}
dtor = buildDtor(this, sc2);
postblit = buildPostBlit(this, sc2);
cpctor = buildCpCtor(this, sc2);
buildOpAssign(this, sc2);
buildOpEquals(this, sc2);
xeq = buildXopEquals(this, sc2);
xcmp = buildXopCmp(this, sc2);
xhash = buildXtoHash(this, sc2);
/* Even if the struct is merely imported and its semantic3 is not run,
* the TypeInfo object would be speculatively stored in each object
* files. To set correct function pointer, run semantic3 for xeq and xcmp.
*/
//if ((xeq && xeq != xerreq || xcmp && xcmp != xerrcmp) && isImportedSym(this))
// Module::addDeferredSemantic3(this);
/* Defer requesting semantic3 until TypeInfo generation is actually invoked.
* See semanticTypeInfo().
*/
inv = buildInv(this, sc2);
sc2->pop();
/* Look for special member functions.
*/
ctor = searchCtor();
aggNew = (NewDeclaration *)search(Loc(), Id::classNew);
aggDelete = (DeleteDeclaration *)search(Loc(), Id::classDelete);
if (ctor)
{
Dsymbol *scall = search(Loc(), Id::call);
if (scall)
{
unsigned xerrors = global.startGagging();
sc = sc->push();
sc->speculative = true;
FuncDeclaration *fcall = resolveFuncCall(loc, sc, scall, NULL, NULL, NULL, 1);
sc = sc->pop();
global.endGagging(xerrors);
if (fcall && fcall->isStatic())
{
error(fcall->loc, "static opCall is hidden by constructors and can never be called");
errorSupplemental(fcall->loc, "Please use a factory method instead, or replace all constructors with static opCall.");
}
}
}
TypeTuple *tup = toArgTypes(type);
size_t dim = tup->arguments->dim;
if (dim >= 1)
{
assert(dim <= 2);
arg1type = (*tup->arguments)[0]->type;
if (dim == 2)
arg2type = (*tup->arguments)[1]->type;
}
if (sc->func)
semantic2(sc);
if (global.errors != errors)
{
// The type is no good.
type = Type::terror;
this->errors = true;
if (deferred)
deferred->errors = true;
}
if (deferred && !global.gag)
{
deferred->semantic2(sc);
deferred->semantic3(sc);
}
#if 0
if (type->ty == Tstruct && ((TypeStruct *)type)->sym != this)
{
printf("this = %p %s\n", this, this->toChars());
printf("type = %d sym = %p\n", type->ty, ((TypeStruct *)type)->sym);
}
#endif
assert(type->ty != Tstruct || ((TypeStruct *)type)->sym == this);
}
void StructDeclaration::semantic(Scope *sc)
{
Scope *sc2;
//printf("+StructDeclaration::semantic(this=%p, %s '%s', sizeok = %d)\n", this, parent->toChars(), toChars(), sizeok);
//static int count; if (++count == 20) halt();
assert(type);
if (!members) // if opaque declaration
{
return;
}
if (symtab)
{ if (sizeok == SIZEOKdone || !scope)
{ //printf("already completed\n");
scope = NULL;
return; // semantic() already completed
}
}
else
symtab = new DsymbolTable();
Scope *scx = NULL;
if (scope)
{
sc = scope;
scx = scope; // save so we don't make redundant copies
scope = NULL;
}
unsigned dprogress_save = Module::dprogress;
int errors = global.errors;
parent = sc->parent;
type = type->semantic(loc, sc);
handle = type;
protection = sc->protection;
alignment = sc->structalign;
storage_class |= sc->stc;
if (sc->stc & STCdeprecated)
isdeprecated = true;
assert(!isAnonymous());
if (sc->stc & STCabstract)
error("structs, unions cannot be abstract");
userAttributes = sc->userAttributes;
if (sizeok == SIZEOKnone) // if not already done the addMember step
{
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
//printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars());
s->addMember(sc, this, 1);
}
}
sizeok = SIZEOKnone;
sc2 = sc->push(this);
sc2->stc &= STCsafe | STCtrusted | STCsystem;
sc2->parent = this;
if (isUnionDeclaration())
sc2->inunion = 1;
sc2->protection = PROTpublic;
sc2->explicitProtection = 0;
sc2->structalign = STRUCTALIGN_DEFAULT;
sc2->userAttributes = NULL;
/* 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];
//printf("struct: setScope %s %s\n", s->kind(), s->toChars());
s->setScope(sc2);
}
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
/* If this is the last member, see if we can finish setting the size.
* This could be much better - finish setting the size after the last
* field was processed. The problem is the chicken-and-egg determination
* of when that is. See Bugzilla 7426 for more info.
*/
if (i + 1 == members->dim)
{
if (sizeok == SIZEOKnone && s->isAliasDeclaration())
finalizeSize(sc2);
}
// Ungag errors when not speculative
Ungag ungag = ungagSpeculative();
s->semantic(sc2);
}
finalizeSize(sc2);
if (sizeok == SIZEOKfwd)
{ // semantic() failed because of forward references.
// Unwind what we did, and defer it for later
for (size_t i = 0; i < fields.dim; i++)
{ Dsymbol *s = fields[i];
VarDeclaration *vd = s->isVarDeclaration();
if (vd)
vd->offset = 0;
}
fields.setDim(0);
structsize = 0;
alignsize = 0;
// structalign = 0;
scope = scx ? scx : new Scope(*sc);
scope->setNoFree();
scope->module->addDeferredSemantic(this);
Module::dprogress = dprogress_save;
//printf("\tdeferring %s\n", toChars());
return;
}
Module::dprogress++;
//printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars());
// Determine if struct is all zeros or not
zeroInit = calcZeroInit();
dtor = buildDtor(sc2);
postblit = buildPostBlit(sc2);
cpctor = buildCpCtor(sc2);
buildOpAssign(sc2);
buildOpEquals(sc2);
xeq = buildXopEquals(sc2);
xcmp = buildXopCmp(sc2);
/* Even if the struct is merely imported and its semantic3 is not run,
* the TypeInfo object would be speculatively stored in each object
* files. To set correct function pointer, run semantic3 for xeq and xcmp.
*/
//if ((xeq && xeq != xerreq || xcmp && xcmp != xerrcmp) && isImportedSym(this))
// Module::addDeferredSemantic3(this);
/* Defer requesting semantic3 until TypeInfo generation is actually invoked.
* See Type::getTypeInfo().
*/
inv = buildInv(sc2);
sc2->pop();
/* Look for special member functions.
*/
searchCtor();
aggNew = (NewDeclaration *)search(Loc(), Id::classNew, 0);
aggDelete = (DeleteDeclaration *)search(Loc(), Id::classDelete, 0);
TypeTuple *tup = type->toArgTypes();
size_t dim = tup->arguments->dim;
if (dim >= 1)
{ assert(dim <= 2);
arg1type = (*tup->arguments)[0]->type;
if (dim == 2)
arg2type = (*tup->arguments)[1]->type;
}
if (sc->func)
{
semantic2(sc);
semantic3(sc);
}
#if 1
{
// build a literal now to initialize vtinfo of element types
StructLiteralExp *sle = new StructLiteralExp(loc, this, NULL);
Expression *e = sle->fill(true);
}
#endif
if (global.errors != errors)
{ // The type is no good.
type = Type::terror;
this->errors = true;
}
if (deferred && !global.gag)
{
deferred->semantic2(sc);
deferred->semantic3(sc);
}
if (type->ty == Tstruct && ((TypeStruct *)type)->sym != this)
{
error("failed semantic analysis");
this->errors = true;
type = Type::terror;
}
}
void StructDeclaration::semantic(Scope *sc)
{
Scope *sc2;
//printf("+StructDeclaration::semantic(this=%p, %s '%s', sizeok = %d)\n", this, parent->toChars(), toChars(), sizeok);
//static int count; if (++count == 20) halt();
assert(type);
if (!members) // if forward reference
return;
if (symtab)
{ if (sizeok == 1 || !scope)
{ //printf("already completed\n");
scope = NULL;
return; // semantic() already completed
}
}
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.gaggedErrors;
unsigned dprogress_save = Module::dprogress;
parent = sc->parent;
type = type->semantic(loc, sc);
#if STRUCTTHISREF
handle = type;
#else
handle = type->pointerTo();
#endif
structalign = sc->structalign;
protection = sc->protection;
storage_class |= sc->stc;
if (sc->stc & STCdeprecated)
isdeprecated = true;
assert(!isAnonymous());
if (sc->stc & STCabstract)
error("structs, unions cannot be abstract");
#if DMDV2
if (storage_class & STCimmutable)
type = type->addMod(MODimmutable);
if (storage_class & STCconst)
type = type->addMod(MODconst);
if (storage_class & STCshared)
type = type->addMod(MODshared);
#endif
if (sizeok == 0) // if not already done the addMember step
{
int hasfunctions = 0;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = members->tdata()[i];
//printf("adding member '%s' to '%s'\n", s->toChars(), this->toChars());
s->addMember(sc, this, 1);
if (s->isFuncDeclaration())
hasfunctions = 1;
}
// If nested struct, add in hidden 'this' pointer to outer scope
if (hasfunctions && !(storage_class & STCstatic))
{ Dsymbol *s = toParent2();
if (s)
{
AggregateDeclaration *ad = s->isAggregateDeclaration();
FuncDeclaration *fd = s->isFuncDeclaration();
TemplateInstance *ti;
if (ad && (ti = ad->parent->isTemplateInstance()) != NULL && ti->isnested || fd)
{ isnested = 1;
Type *t;
if (ad)
t = ad->handle;
else if (fd)
{ AggregateDeclaration *ad = fd->isMember2();
if (ad)
t = ad->handle;
else
t = Type::tvoidptr;
}
else
assert(0);
if (t->ty == Tstruct)
t = Type::tvoidptr; // t should not be a ref type
assert(!vthis);
vthis = new ThisDeclaration(loc, t);
//vthis->storage_class |= STCref;
members->push(vthis);
}
}
}
}
sizeok = 0;
sc2 = sc->push(this);
sc2->stc &= STCsafe | STCtrusted | STCsystem;
sc2->parent = this;
if (isUnionDeclaration())
sc2->inunion = 1;
sc2->protection = PROTpublic;
sc2->explicitProtection = 0;
size_t members_dim = members->dim;
/* 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(sc2);
}
}
for (size_t i = 0; i < members_dim; i++)
{
Dsymbol *s = (*members)[i];
/* If this is the last member, see if we can finish setting the size.
* This could be much better - finish setting the size after the last
* field was processed. The problem is the chicken-and-egg determination
* of when that is. See Bugzilla 7426 for more info.
*/
if (i + 1 == members_dim)
{
if (sizeok == 0 && s->isAliasDeclaration())
finalizeSize();
}
// Ungag errors when not speculative
unsigned oldgag = global.gag;
if (global.isSpeculativeGagging() && !isSpeculative())
global.gag = 0;
s->semantic(sc2);
global.gag = oldgag;
}
if (sizeok == 2)
{ // semantic() failed because of forward references.
// Unwind what we did, and defer it for later
fields.setDim(0);
structsize = 0;
alignsize = 0;
structalign = 0;
scope = scx ? scx : new Scope(*sc);
scope->setNoFree();
scope->module->addDeferredSemantic(this);
Module::dprogress = dprogress_save;
//printf("\tdeferring %s\n", toChars());
return;
}
finalizeSize();
Module::dprogress++;
//printf("-StructDeclaration::semantic(this=%p, '%s')\n", this, toChars());
// Determine if struct is all zeros or not
zeroInit = 1;
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = fields.tdata()[i];
VarDeclaration *vd = s->isVarDeclaration();
if (vd && !vd->isDataseg())
{
if (vd->init)
{
// Should examine init to see if it is really all 0's
zeroInit = 0;
break;
}
else
{
if (!vd->type->isZeroInit(loc))
{
zeroInit = 0;
break;
}
}
}
}
#if DMDV1
/* This doesn't work for DMDV2 because (ref S) and (S) parameter
* lists will overload the same.
*/
/* The TypeInfo_Struct is expecting an opEquals and opCmp with
* a parameter that is a pointer to the struct. But if there
* isn't one, but is an opEquals or opCmp with a value, write
* another that is a shell around the value:
* int opCmp(struct *p) { return opCmp(*p); }
*/
TypeFunction *tfeqptr;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, handle, Id::p, NULL);
arguments->push(arg);
tfeqptr = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeqptr = (TypeFunction *)tfeqptr->semantic(0, sc);
}
TypeFunction *tfeq;
{
Parameters *arguments = new Parameters;
Parameter *arg = new Parameter(STCin, type, NULL, NULL);
arguments->push(arg);
tfeq = new TypeFunction(arguments, Type::tint32, 0, LINKd);
tfeq = (TypeFunction *)tfeq->semantic(0, sc);
}
Identifier *id = Id::eq;
for (int i = 0; i < 2; i++)
{
Dsymbol *s = search_function(this, id);
FuncDeclaration *fdx = s ? s->isFuncDeclaration() : NULL;
if (fdx)
{ FuncDeclaration *fd = fdx->overloadExactMatch(tfeqptr);
if (!fd)
{ fd = fdx->overloadExactMatch(tfeq);
if (fd)
{ // Create the thunk, fdptr
FuncDeclaration *fdptr = new FuncDeclaration(loc, loc, fdx->ident, STCundefined, tfeqptr);
Expression *e = new IdentifierExp(loc, Id::p);
e = new PtrExp(loc, e);
Expressions *args = new Expressions();
args->push(e);
e = new IdentifierExp(loc, id);
e = new CallExp(loc, e, args);
fdptr->fbody = new ReturnStatement(loc, e);
ScopeDsymbol *s = fdx->parent->isScopeDsymbol();
assert(s);
s->members->push(fdptr);
fdptr->addMember(sc, s, 1);
fdptr->semantic(sc2);
}
}
}
id = Id::cmp;
}
#endif
#if DMDV2
dtor = buildDtor(sc2);
postblit = buildPostBlit(sc2);
cpctor = buildCpCtor(sc2);
buildOpAssign(sc2);
hasIdentityEquals = (buildOpEquals(sc2) != NULL);
xeq = buildXopEquals(sc2);
#endif
sc2->pop();
/* Look for special member functions.
*/
#if DMDV2
ctor = search(0, Id::ctor, 0);
#endif
inv = (InvariantDeclaration *)search(0, Id::classInvariant, 0);
aggNew = (NewDeclaration *)search(0, Id::classNew, 0);
aggDelete = (DeleteDeclaration *)search(0, Id::classDelete, 0);
if (sc->func)
{
semantic2(sc);
semantic3(sc);
}
if (global.gag && global.gaggedErrors != errors)
{ // The type is no good, yet the error messages were gagged.
type = Type::terror;
}
if (deferred && !global.gag)
{
deferred->semantic2(sc);
deferred->semantic3(sc);
}
}