void Module::semantic3()
{
//printf("Module::semantic3('%s'): parent = %p\n", toChars(), parent);
if (semanticstarted >= 3)
return;
assert(semanticstarted == 2);
semanticstarted = 3;
// Note that modules get their own scope, from scratch.
// This is so regardless of where in the syntax a module
// gets imported, it is unaffected by context.
Scope *sc = Scope::createGlobal(this); // create root scope
//printf("Module = %p\n", sc.scopesym);
// Pass 3 semantic routines: do initializers and function bodies
for (size_t i = 0; i < members->dim; i++)
{ Dsymbol *s;
s = (*members)[i];
//printf("Module %s: %s.semantic3()\n", toChars(), s->toChars());
s->semantic3(sc);
}
sc = sc->pop();
sc->pop();
semanticRun = semanticstarted;
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s) type = %s, errors = %d\n", toChars(), type->toChars(), errors);
if (!members)
return;
StructDeclaration *sd = isStructDeclaration();
if (!sc) // from runDeferredSemantic3 for TypeInfo generation
{
assert(sd);
sd->semanticTypeInfoMembers();
return;
}
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;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc2);
}
sc2->pop();
// don't do it for unused deprecated types
// or error types
if (!getRTInfo && Type::rtinfo &&
(!isDeprecated() || global.params.useDeprecated) &&
(type && type->ty != Terror))
{
// Evaluate: RTinfo!type
Objects *tiargs = new Objects();
tiargs->push(type);
TemplateInstance *ti = new TemplateInstance(loc, Type::rtinfo, tiargs);
ti->semantic(sc);
ti->semantic2(sc);
ti->semantic3(sc);
Dsymbol *s = ti->toAlias();
Expression *e = new DsymbolExp(Loc(), s, 0);
Scope *sc3 = ti->tempdecl->scope->startCTFE();
sc3->tinst = sc->tinst;
e = e->semantic(sc3);
sc3->endCTFE();
e = e->ctfeInterpret();
getRTInfo = e;
}
if (sd)
sd->semanticTypeInfoMembers();
}
void AttribDeclaration::semantic3(Scope *sc)
{
Dsymbols *d = include(sc, NULL);
if (d)
{
for (size_t i = 0; i < d->dim; i++)
{ Dsymbol *s = (*d)[i];
s->semantic3(sc);
}
}
}
void AttribDeclaration::semantic3(Scope *sc)
{
Array *d = include(sc, NULL);
if (d)
{
for (unsigned i = 0; i < d->dim; i++)
{ Dsymbol *s = (Dsymbol *)d->data[i];
s->semantic3(sc);
}
}
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s)\n", toChars());
if (members)
{
sc = sc->push(this);
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (Dsymbol *)members->data[i];
s->semantic3(sc);
}
sc->pop();
}
}
void Module::runDeferredSemantic3()
{
Dsymbols *a = &Module::deferred3;
for (size_t i = 0; i < a->dim; i++)
{
Dsymbol *s = (*a)[i];
//printf("[%d] %s semantic3a\n", i, s->toPrettyChars());
s->semantic3(NULL);
if (global.errors)
break;
}
}
void Nspace::semantic3(Scope *sc)
{
if (semanticRun >= PASSsemantic3)
return;
semanticRun = PASSsemantic3;
if (members)
{
sc = sc->push(this);
sc->linkage = LINKcpp;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
sc->pop();
}
}
void AggregateDeclaration::semantic3(Scope *sc)
{
#if IN_LLVM
if (!global.inExtraInliningSemantic)
availableExternally = false;
#endif
//printf("AggregateDeclaration::semantic3(%s)\n", toChars());
if (members)
{
sc = sc->push(this);
sc->parent = this;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
if (StructDeclaration *sd = isStructDeclaration())
{
//if (sd->xeq != NULL) printf("sd = %s xeq @ [%s]\n", sd->toChars(), sd->loc.toChars());
//assert(sd->xeq == NULL);
if (sd->xeq == NULL)
sd->xeq = sd->buildXopEquals(sc);
}
sc = sc->pop();
if (!getRTInfo && Type::rtinfo &&
(!isDeprecated() || global.params.useDeprecated) && // don't do it for unused deprecated types
(type && type->ty != Terror)) // or error types
{ // Evaluate: gcinfo!type
Objects *tiargs = new Objects();
tiargs->push(type);
TemplateInstance *ti = new TemplateInstance(loc, Type::rtinfo, tiargs);
ti->semantic(sc);
ti->semantic2(sc);
ti->semantic3(sc);
Dsymbol *s = ti->toAlias();
Expression *e = new DsymbolExp(Loc(), s, 0);
e = e->ctfeSemantic(ti->tempdecl->scope);
e = e->ctfeInterpret();
getRTInfo = e;
}
}
}
void AttribDeclaration::semantic3(Scope *sc)
{
Dsymbols *d = include(sc, NULL);
if (d)
{
Scope *sc2 = newScope(sc);
for (size_t i = 0; i < d->dim; i++)
{
Dsymbol *s = (*d)[i];
s->semantic3(sc2);
}
if (sc2 != sc)
sc2->pop();
}
}
void LinkDeclaration::semantic3(Scope *sc)
{
//printf("LinkDeclaration::semantic3(linkage = %d, decl = %p)\n", linkage, decl);
if (decl)
{ LINK linkage_save = sc->linkage;
sc->linkage = linkage;
for (size_t i = 0; i < decl->dim; i++)
{
Dsymbol *s = (*decl)[i];
s->semantic3(sc);
}
sc->linkage = linkage_save;
}
else
{
sc->linkage = linkage;
}
}
void Nspace::semantic3(Scope *sc)
{
if (semanticRun >= PASSsemantic3)
return;
semanticRun = PASSsemantic3;
#if LOG
printf("Nspace::semantic3('%s')\n", toChars());
#endif
if (members)
{
sc = sc->push(this);
sc->linkage = LINKcpp;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
sc->pop();
}
}
void LinkDeclaration::semantic3(Scope *sc)
{
//printf("LinkDeclaration::semantic3(linkage = %d, decl = %p)\n", linkage, decl);
if (decl)
{ enum LINK linkage_save = sc->linkage;
sc->linkage = linkage;
for (unsigned i = 0; i < decl->dim; i++)
{
Dsymbol *s = (Dsymbol *)decl->data[i];
s->semantic3(sc);
}
sc->linkage = linkage_save;
}
else
{
sc->linkage = linkage;
}
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s)\n", toChars());
if (members)
{
sc = sc->push(this);
sc->parent = this;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
sc = sc->pop();
if (!getRTInfo && Type::rtinfo &&
(!isDeprecated() || global.params.useDeprecated) && // don't do it for unused deprecated types
(type && type->ty != Terror)) // or error types
{ // Evaluate: gcinfo!type
Objects *tiargs = new Objects();
tiargs->push(type);
TemplateInstance *ti = new TemplateInstance(loc, Type::rtinfo, tiargs);
ti->semantic(sc);
ti->semantic2(sc);
ti->semantic3(sc);
Dsymbol *s = ti->toAlias();
Expression *e = new DsymbolExp(Loc(), s, 0);
Scope *sc = ti->tempdecl->scope->startCTFE();
e = e->semantic(sc);
sc->endCTFE();
e = e->ctfeInterpret();
getRTInfo = e;
}
}
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s) type = %s, errors = %d\n", toChars(), type->toChars(), errors);
if (!members)
return;
StructDeclaration *sd = isStructDeclaration();
if (!sc) // from runDeferredSemantic3 for TypeInfo generation
{
assert(sd);
sd->semanticTypeInfoMembers();
return;
}
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;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc2);
}
sc2->pop();
// don't do it for unused deprecated types
// or error types
if (!getRTInfo && Type::rtinfo &&
(!isDeprecated() || global.params.useDeprecated) &&
(type && type->ty != Terror))
{
// we do not want to report deprecated uses of this type during RTInfo
// generation, so we disable reporting deprecation temporarily
// WARNING: Muting messages during analysis of RTInfo might silently instantiate
// templates that use (other) deprecated types. If these template instances
// are used in other parts of the program later, they will be reused without
// ever producing the deprecation message. The implementation here restricts
// muting to the types that RTInfo is currently generated for.
bool wasmuted = mutedeprecation;
mutedeprecation = true;
// Evaluate: RTinfo!type
Objects *tiargs = new Objects();
tiargs->push(type);
TemplateInstance *ti = new TemplateInstance(loc, Type::rtinfo, tiargs);
ti->semantic(sc);
ti->semantic2(sc);
ti->semantic3(sc);
Dsymbol *s = ti->toAlias();
Expression *e = new DsymbolExp(Loc(), s, 0);
Scope *sc3 = ti->tempdecl->scope->startCTFE();
sc3->tinst = sc->tinst;
e = e->semantic(sc3);
sc3->endCTFE();
e = e->ctfeInterpret();
getRTInfo = e;
mutedeprecation = wasmuted;
}
if (sd)
sd->semanticTypeInfoMembers();
}
FuncDeclaration *StructDeclaration::buildOpAssign(Scope *sc)
{
Dsymbol *assign = search_function(this, Id::assign);
if (assign)
{
if (FuncDeclaration *f = hasIdentityOpAssign(sc, assign))
return f;
// Even if non-identity opAssign is defined, built-in identity opAssign
// will be defined. (Is this an exception of operator overloading rule?)
}
if (!needOpAssign())
return NULL;
//printf("StructDeclaration::buildOpAssign() %s\n", toChars());
Parameters *fparams = new Parameters;
fparams->push(new Parameter(STCnodtor, type, Id::p, NULL));
Type *ftype = new TypeFunction(fparams, handle, FALSE, LINKd);
((TypeFunction *)ftype)->isref = 1;
FuncDeclaration *fop = new FuncDeclaration(loc, 0, Id::assign, STCundefined, ftype);
Expression *e = NULL;
if (postblit)
{ /* Swap:
* tmp = *this; *this = s; tmp.dtor();
*/
//printf("\tswap copy\n");
Identifier *idtmp = Lexer::uniqueId("__tmp");
VarDeclaration *tmp;
AssignExp *ec = NULL;
if (dtor)
{
tmp = new VarDeclaration(0, type, idtmp, new VoidInitializer(0));
tmp->noscope = 1;
tmp->storage_class |= STCctfe;
e = new DeclarationExp(0, tmp);
ec = new AssignExp(0,
new VarExp(0, tmp),
new ThisExp(0)
);
ec->op = TOKblit;
e = Expression::combine(e, ec);
}
ec = new AssignExp(0,
new ThisExp(0),
new IdentifierExp(0, Id::p));
ec->op = TOKblit;
e = Expression::combine(e, ec);
if (dtor)
{
/* Instead of running the destructor on s, run it
* on tmp. This avoids needing to copy tmp back in to s.
*/
Expression *ec2 = new DotVarExp(0, new VarExp(0, tmp), dtor, 0);
ec2 = new CallExp(0, ec2);
e = Expression::combine(e, ec2);
}
}
else
{ /* Do memberwise copy
*/
//printf("\tmemberwise copy\n");
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = fields[i];
VarDeclaration *v = s->isVarDeclaration();
assert(v && v->isField());
// this.v = s.v;
AssignExp *ec = new AssignExp(0,
new DotVarExp(0, new ThisExp(0), v, 0),
new DotVarExp(0, new IdentifierExp(0, Id::p), v, 0));
e = Expression::combine(e, ec);
}
}
Statement *s1 = new ExpStatement(0, e);
/* Add:
* return this;
*/
e = new ThisExp(0);
Statement *s2 = new ReturnStatement(0, e);
fop->fbody = new CompoundStatement(0, s1, s2);
Dsymbol *s = fop;
if (assign && assign->isTemplateDeclaration())
{
// Wrap a template around the function declaration
TemplateParameters *tpl = new TemplateParameters();
Dsymbols *decldefs = new Dsymbols();
decldefs->push(s);
TemplateDeclaration *tempdecl =
new TemplateDeclaration(assign->loc, fop->ident, tpl, NULL, decldefs, 0);
s = tempdecl;
}
members->push(s);
s->addMember(sc, this, 1);
this->hasIdentityAssign = 1; // temporary mark identity assignable
unsigned errors = global.startGagging(); // Do not report errors, even if the
unsigned oldspec = global.speculativeGag; // template opAssign fbody makes it.
global.speculativeGag = global.gag;
Scope *sc2 = sc->push();
sc2->stc = 0;
sc2->linkage = LINKd;
sc2->speculative = true;
s->semantic(sc2);
s->semantic2(sc2);
s->semantic3(sc2);
sc2->pop();
global.speculativeGag = oldspec;
if (global.endGagging(errors)) // if errors happened
{ // Disable generated opAssign, because some members forbid identity assignment.
fop->storage_class |= STCdisable;
fop->fbody = NULL; // remove fbody which contains the error
}
//printf("-StructDeclaration::buildOpAssign() %s %s, errors = %d\n", toChars(), s->kind(), (fop->storage_class & STCdisable) != 0);
return fop;
}
FuncDeclaration *buildOpAssign(StructDeclaration *sd, Scope *sc)
{
if (FuncDeclaration *f = hasIdentityOpAssign(sd, sc))
{
sd->hasIdentityAssign = true;
return f;
}
// Even if non-identity opAssign is defined, built-in identity opAssign
// will be defined.
if (!needOpAssign(sd))
return NULL;
//printf("StructDeclaration::buildOpAssign() %s\n", toChars());
StorageClass stc = STCsafe | STCnothrow | STCpure | STCnogc;
Loc declLoc = sd->loc;
Loc loc = Loc(); // internal code should have no loc to prevent coverage
if (sd->dtor || sd->postblit)
{
if (sd->dtor)
{
stc = mergeFuncAttrs(stc, sd->dtor);
if (stc & STCsafe)
stc = (stc & ~STCsafe) | STCtrusted;
}
}
else
{
for (size_t i = 0; i < sd->fields.dim; i++)
{
VarDeclaration *v = sd->fields[i];
if (v->storage_class & STCref)
continue;
Type *tv = v->type->baseElemOf();
if (tv->ty == Tstruct)
{
TypeStruct *ts = (TypeStruct *)tv;
if (FuncDeclaration *f = hasIdentityOpAssign(ts->sym, sc))
stc = mergeFuncAttrs(stc, f);
}
}
}
Parameters *fparams = new Parameters;
fparams->push(new Parameter(STCnodtor, sd->type, Id::p, NULL));
Type *tf = new TypeFunction(fparams, sd->handleType(), 0, LINKd, stc | STCref);
FuncDeclaration *fop = new FuncDeclaration(declLoc, Loc(), Id::assign, stc, tf);
Expression *e = NULL;
if (stc & STCdisable)
{
}
else if (sd->dtor || sd->postblit)
{
/* Do swap this and rhs
* tmp = this; this = s; tmp.dtor();
*/
//printf("\tswap copy\n");
Identifier *idtmp = Lexer::uniqueId("__tmp");
VarDeclaration *tmp = NULL;
AssignExp *ec = NULL;
if (sd->dtor)
{
tmp = new VarDeclaration(loc, sd->type, idtmp, new VoidInitializer(loc));
tmp->noscope = 1;
tmp->storage_class |= STCtemp | STCctfe;
e = new DeclarationExp(loc, tmp);
ec = new BlitExp(loc, new VarExp(loc, tmp), new ThisExp(loc));
e = Expression::combine(e, ec);
}
ec = new BlitExp(loc, new ThisExp(loc), new IdentifierExp(loc, Id::p));
e = Expression::combine(e, ec);
if (sd->dtor)
{
/* Instead of running the destructor on s, run it
* on tmp. This avoids needing to copy tmp back in to s.
*/
Expression *ec2 = new DotVarExp(loc, new VarExp(loc, tmp), sd->dtor, 0);
ec2 = new CallExp(loc, ec2);
e = Expression::combine(e, ec2);
}
}
else
{
/* Do memberwise copy
*/
//printf("\tmemberwise copy\n");
for (size_t i = 0; i < sd->fields.dim; i++)
{
VarDeclaration *v = sd->fields[i];
// this.v = s.v;
AssignExp *ec = new AssignExp(loc,
new DotVarExp(loc, new ThisExp(loc), v, 0),
new DotVarExp(loc, new IdentifierExp(loc, Id::p), v, 0));
e = Expression::combine(e, ec);
}
}
if (e)
{
Statement *s1 = new ExpStatement(loc, e);
/* Add:
* return this;
*/
e = new ThisExp(loc);
Statement *s2 = new ReturnStatement(loc, e);
fop->fbody = new CompoundStatement(loc, s1, s2);
}
Dsymbol *s = fop;
sd->members->push(s);
s->addMember(sc, sd, 1);
sd->hasIdentityAssign = true; // temporary mark identity assignable
unsigned errors = global.startGagging(); // Do not report errors, even if the
unsigned oldspec = global.speculativeGag; // template opAssign fbody makes it.
global.speculativeGag = global.gag;
Scope *sc2 = sc->push();
sc2->stc = 0;
sc2->linkage = LINKd;
sc2->speculative = true;
s->semantic(sc2);
s->semantic2(sc2);
s->semantic3(sc2);
sc2->pop();
global.speculativeGag = oldspec;
if (global.endGagging(errors)) // if errors happened
{
// Disable generated opAssign, because some members forbid identity assignment.
fop->storage_class |= STCdisable;
fop->fbody = NULL; // remove fbody which contains the error
}
//printf("-StructDeclaration::buildOpAssign() %s %s, errors = %d\n", toChars(), s->kind(), (fop->storage_class & STCdisable) != 0);
return fop;
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s)\n", toChars());
if (members)
{
StructDeclaration *sd = isStructDeclaration();
if (!sc) // from runDeferredSemantic3 for TypeInfo generation
goto Lxop;
sc = sc->push(this);
sc->parent = this;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
sc = sc->pop();
type->buildTypeInfo(sc, false); // implicitely calls generateTypeInfoData
if (type->vtinfo && type->builtinTypeInfo())
type->vtinfo->semantic3(sc);
if (sd)
{
Lxop:
if (sd->xeq &&
sd->xeq->scope &&
sd->xeq->semanticRun < PASSsemantic3done)
{
unsigned errors = global.startGagging();
sd->xeq->semantic3(sd->xeq->scope);
if (global.endGagging(errors))
sd->xeq = sd->xerreq;
}
if (sd->xcmp &&
sd->xcmp->scope &&
sd->xcmp->semanticRun < PASSsemantic3done)
{
unsigned errors = global.startGagging();
sd->xcmp->semantic3(sd->xcmp->scope);
if (global.endGagging(errors))
sd->xcmp = sd->xerrcmp;
}
FuncDeclaration *ftostr = search_toString(sd);
if (ftostr &&
ftostr->scope &&
ftostr->semanticRun < PASSsemantic3done)
{
ftostr->semantic3(ftostr->scope);
}
FuncDeclaration *ftohash = search_toHash(sd);
if (ftohash &&
ftohash->scope &&
ftohash->semanticRun < PASSsemantic3done)
{
ftohash->semantic3(ftohash->scope);
}
}
}
}
void AggregateDeclaration::semantic3(Scope *sc)
{
//printf("AggregateDeclaration::semantic3(%s)\n", toChars());
if (members)
{
StructDeclaration *sd = isStructDeclaration();
if (!sc) // from runDeferredSemantic3 for TypeInfo generation
goto Lxop;
sc = sc->push(this);
sc->parent = this;
for (size_t i = 0; i < members->dim; i++)
{
Dsymbol *s = (*members)[i];
s->semantic3(sc);
}
sc = sc->pop();
if (!getRTInfo && Type::rtinfo &&
(!isDeprecated() || global.params.useDeprecated) && // don't do it for unused deprecated types
(type && type->ty != Terror)) // or error types
{
// Evaluate: RTinfo!type
Objects *tiargs = new Objects();
tiargs->push(type);
TemplateInstance *ti = new TemplateInstance(loc, Type::rtinfo, tiargs);
ti->semantic(sc);
ti->semantic2(sc);
ti->semantic3(sc);
Dsymbol *s = ti->toAlias();
Expression *e = new DsymbolExp(Loc(), s, 0);
Scope *sc2 = ti->tempdecl->scope->startCTFE();
sc2->instantiatingModule = sc->instantiatingModule ? sc->instantiatingModule : sc->module;
e = e->semantic(sc2);
sc2->endCTFE();
e = e->ctfeInterpret();
getRTInfo = e;
}
if (sd)
{
Lxop:
if (sd->xeq &&
sd->xeq->scope &&
sd->xeq->semanticRun < PASSsemantic3done)
{
unsigned errors = global.startGagging();
sd->xeq->semantic3(sd->xeq->scope);
if (global.endGagging(errors))
sd->xeq = sd->xerreq;
}
if (sd->xcmp &&
sd->xcmp->scope &&
sd->xcmp->semanticRun < PASSsemantic3done)
{
unsigned errors = global.startGagging();
sd->xcmp->semantic3(sd->xcmp->scope);
if (global.endGagging(errors))
sd->xcmp = sd->xerrcmp;
}
FuncDeclaration *ftostr = search_toString(sd);
if (ftostr &&
ftostr->scope &&
ftostr->semanticRun < PASSsemantic3done)
{
ftostr->semantic3(ftostr->scope);
}
FuncDeclaration *ftohash = search_toHash(sd);
if (ftohash &&
ftohash->scope &&
ftohash->semanticRun < PASSsemantic3done)
{
ftohash->semantic3(ftohash->scope);
}
}
}
}
FuncDeclaration *StructDeclaration::buildOpAssign(Scope *sc)
{
if (FuncDeclaration *f = hasIdentityOpAssign(sc))
{
hasIdentityAssign = 1;
return f;
}
// Even if non-identity opAssign is defined, built-in identity opAssign
// will be defined.
if (!needOpAssign())
return NULL;
//printf("StructDeclaration::buildOpAssign() %s\n", toChars());
StorageClass stc = STCsafe | STCnothrow | STCpure;
Loc declLoc = this->loc;
Loc loc = Loc(); // internal code should have no loc to prevent coverage
if (dtor || postblit)
{
if (dtor)
stc = mergeFuncAttrs(stc, dtor->storage_class);
}
else
{
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = fields[i];
VarDeclaration *v = s->isVarDeclaration();
assert(v && v->isField());
if (v->storage_class & STCref)
continue;
Type *tv = v->type->toBasetype();
while (tv->ty == Tsarray)
{ TypeSArray *ta = (TypeSArray *)tv;
tv = tv->nextOf()->toBasetype();
}
if (tv->ty == Tstruct)
{ TypeStruct *ts = (TypeStruct *)tv;
StructDeclaration *sd = ts->sym;
if (FuncDeclaration *f = sd->hasIdentityOpAssign(sc))
stc = mergeFuncAttrs(stc, f->storage_class);
}
}
}
Parameters *fparams = new Parameters;
fparams->push(new Parameter(STCnodtor, type, Id::p, NULL));
Type *tf = new TypeFunction(fparams, handle, 0, LINKd, stc | STCref);
FuncDeclaration *fop = new FuncDeclaration(declLoc, Loc(), Id::assign, stc, tf);
Expression *e = NULL;
if (stc & STCdisable)
{
}
else if (dtor || postblit)
{
/* Do swap this and rhs
* tmp = this; this = s; tmp.dtor();
*/
//printf("\tswap copy\n");
Identifier *idtmp = Lexer::uniqueId("__tmp");
VarDeclaration *tmp;
AssignExp *ec = NULL;
if (dtor)
{
tmp = new VarDeclaration(loc, type, idtmp, new VoidInitializer(loc));
tmp->noscope = 1;
tmp->storage_class |= STCctfe;
e = new DeclarationExp(loc, tmp);
ec = new AssignExp(loc,
new VarExp(loc, tmp),
new ThisExp(loc)
);
ec->op = TOKblit;
e = Expression::combine(e, ec);
}
ec = new AssignExp(loc,
new ThisExp(loc),
new IdentifierExp(loc, Id::p));
ec->op = TOKblit;
e = Expression::combine(e, ec);
if (dtor)
{
/* Instead of running the destructor on s, run it
* on tmp. This avoids needing to copy tmp back in to s.
*/
Expression *ec2 = new DotVarExp(loc, new VarExp(loc, tmp), dtor, 0);
ec2 = new CallExp(loc, ec2);
e = Expression::combine(e, ec2);
}
}
else
{
/* Do memberwise copy
*/
//printf("\tmemberwise copy\n");
for (size_t i = 0; i < fields.dim; i++)
{
Dsymbol *s = fields[i];
VarDeclaration *v = s->isVarDeclaration();
assert(v && v->isField());
// this.v = s.v;
AssignExp *ec = new AssignExp(loc,
new DotVarExp(loc, new ThisExp(loc), v, 0),
new DotVarExp(loc, new IdentifierExp(loc, Id::p), v, 0));
e = Expression::combine(e, ec);
}
}
if (e)
{
Statement *s1 = new ExpStatement(loc, e);
/* Add:
* return this;
*/
e = new ThisExp(loc);
Statement *s2 = new ReturnStatement(loc, e);
fop->fbody = new CompoundStatement(loc, s1, s2);
}
Dsymbol *s = fop;
#if 1 // workaround until fixing issue 1528
Dsymbol *assign = search_function(this, Id::assign);
if (assign && assign->isTemplateDeclaration())
{
// Wrap a template around the function declaration
TemplateParameters *tpl = new TemplateParameters();
Dsymbols *decldefs = new Dsymbols();
decldefs->push(s);
TemplateDeclaration *tempdecl =
new TemplateDeclaration(assign->loc, fop->ident, tpl, NULL, decldefs, 0);
s = tempdecl;
}
#endif
members->push(s);
s->addMember(sc, this, 1);
this->hasIdentityAssign = 1; // temporary mark identity assignable
unsigned errors = global.startGagging(); // Do not report errors, even if the
unsigned oldspec = global.speculativeGag; // template opAssign fbody makes it.
global.speculativeGag = global.gag;
Scope *sc2 = sc->push();
sc2->stc = 0;
sc2->linkage = LINKd;
sc2->speculative = true;
s->semantic(sc2);
s->semantic2(sc2);
s->semantic3(sc2);
sc2->pop();
global.speculativeGag = oldspec;
if (global.endGagging(errors)) // if errors happened
{ // Disable generated opAssign, because some members forbid identity assignment.
fop->storage_class |= STCdisable;
fop->fbody = NULL; // remove fbody which contains the error
}
//printf("-StructDeclaration::buildOpAssign() %s %s, errors = %d\n", toChars(), s->kind(), (fop->storage_class & STCdisable) != 0);
return fop;
}