Initializer *ArrayInitializer::semantic(Scope *sc, Type *t)
{ unsigned i;
unsigned length;
//printf("ArrayInitializer::semantic(%s)\n", t->toChars());
if (sem) // if semantic() already run
return this;
sem = 1;
type = t;
t = t->toBasetype();
switch (t->ty)
{
case Tpointer:
case Tsarray:
case Tarray:
break;
default:
//error(loc, "cannot use array to initialize %s", type->toChars());
return this;
}
length = 0;
for (i = 0; i < index.dim; i++)
{ Expression *idx;
Initializer *val;
idx = (Expression *)index.data[i];
if (idx)
{ idx = idx->semantic(sc);
idx = idx->optimize(WANTvalue | WANTinterpret);
index.data[i] = (void *)idx;
length = idx->toInteger();
}
val = (Initializer *)value.data[i];
val = val->semantic(sc, t->nextOf());
value.data[i] = (void *)val;
length++;
/* if (length == 0)
error(loc, "array dimension overflow"); */
if (length > dim)
dim = length;
}
unsigned long amax = 0x80000000;
/* if ((unsigned long) dim * t->nextOf()->size() >= amax)
error(loc, "array dimension %u exceeds max of %ju", dim, amax / t->nextOf()->size()); */
return this;
}
Initializer *ArrayInitializer::semantic(Scope *sc, Type *t, int needInterpret)
{ unsigned i;
unsigned length;
const unsigned amax = 0x80000000;
//printf("ArrayInitializer::semantic(%s)\n", t->toChars());
if (sem) // if semantic() already run
return this;
sem = 1;
type = t;
t = t->toBasetype();
switch (t->ty)
{
case Tpointer:
case Tsarray:
case Tarray:
break;
default:
error(loc, "cannot use array to initialize %s", type->toChars());
goto Lerr;
}
length = 0;
for (i = 0; i < index.dim; i++)
{
Expression *idx = index[i];
if (idx)
{ idx = idx->semantic(sc);
idx = idx->optimize(WANTvalue | WANTinterpret);
index[i] = idx;
length = idx->toInteger();
}
Initializer *val = value[i];
val = val->semantic(sc, t->nextOf(), needInterpret);
value[i] = val;
length++;
if (length == 0)
{ error(loc, "array dimension overflow");
goto Lerr;
}
if (length > dim)
dim = length;
}
if (t->ty == Tsarray)
{
dinteger_t edim = ((TypeSArray *)t)->dim->toInteger();
if (dim > edim)
{
error(loc, "array initializer has %u elements, but array length is %lld", dim, edim);
goto Lerr;
}
}
if ((unsigned long) dim * t->nextOf()->size() >= amax)
{ error(loc, "array dimension %u exceeds max of %u", dim, amax / t->nextOf()->size());
goto Lerr;
}
return this;
Lerr:
return new ExpInitializer(loc, new ErrorExp());
}
Initializer *StructInitializer::semantic(Scope *sc, Type *t, int needInterpret)
{
int errors = 0;
//printf("StructInitializer::semantic(t = %s) %s\n", t->toChars(), toChars());
vars.setDim(field.dim);
t = t->toBasetype();
if (t->ty == Tstruct)
{
unsigned fieldi = 0;
TypeStruct *ts = (TypeStruct *)t;
ad = ts->sym;
if (ad->ctor)
error(loc, "%s %s has constructors, cannot use { initializers }, use %s( initializers ) instead",
ad->kind(), ad->toChars(), ad->toChars());
StructDeclaration *sd = ad->isStructDeclaration();
assert(sd);
sd->size(loc);
if (sd->sizeok != SIZEOKdone)
{
error(loc, "struct %s is forward referenced", sd->toChars());
errors = 1;
goto Lerror;
}
size_t nfields = sd->fields.dim;
if (sd->isnested)
nfields--;
for (size_t i = 0; i < field.dim; i++)
{
Identifier *id = field[i];
Initializer *val = value[i];
Dsymbol *s;
VarDeclaration *v;
if (id == NULL)
{
if (fieldi >= nfields)
{ error(loc, "too many initializers for %s", ad->toChars());
errors = 1;
field.remove(i);
i--;
continue;
}
else
{
s = ad->fields[fieldi];
}
}
else
{
//s = ad->symtab->lookup(id);
s = ad->search(loc, id, 0);
if (!s)
{
s = ad->search_correct(id);
if (s)
error(loc, "'%s' is not a member of '%s', did you mean '%s %s'?",
id->toChars(), t->toChars(), s->kind(), s->toChars());
else
error(loc, "'%s' is not a member of '%s'", id->toChars(), t->toChars());
errors = 1;
continue;
}
s = s->toAlias();
// Find out which field index it is
for (fieldi = 0; 1; fieldi++)
{
if (fieldi >= nfields)
{
error(loc, "%s.%s is not a per-instance initializable field",
t->toChars(), s->toChars());
errors = 1;
break;
}
if (s == ad->fields[fieldi])
break;
}
}
if (s && (v = s->isVarDeclaration()) != NULL)
{
val = val->semantic(sc, v->type, needInterpret);
value[i] = val;
vars[i] = v;
}
else
{ error(loc, "%s is not a field of %s", id ? id->toChars() : s->toChars(), ad->toChars());
errors = 1;
}
fieldi++;
}
}
else if (t->ty == Tdelegate && value.dim == 0)
{ /* Rewrite as empty delegate literal { }
*/
Parameters *arguments = new Parameters;
Type *tf = new TypeFunction(arguments, NULL, 0, LINKd);
FuncLiteralDeclaration *fd = new FuncLiteralDeclaration(loc, 0, tf, TOKdelegate, NULL);
fd->fbody = new CompoundStatement(loc, new Statements());
fd->endloc = loc;
Expression *e = new FuncExp(loc, fd);
ExpInitializer *ie = new ExpInitializer(loc, e);
return ie->semantic(sc, t, needInterpret);
}
else
{
error(loc, "a struct is not a valid initializer for a %s", t->toChars());
errors = 1;
}
Lerror:
if (errors)
{
field.setDim(0);
value.setDim(0);
vars.setDim(0);
}
return this;
}
Initializer *ArrayInitializer::semantic(Scope *sc, Type *t, NeedInterpret needInterpret)
{ unsigned i;
unsigned length;
const unsigned amax = 0x80000000;
//printf("ArrayInitializer::semantic(%s)\n", t->toChars());
if (sem) // if semantic() already run
return this;
sem = 1;
type = t;
t = t->toBasetype();
switch (t->ty)
{
case Tpointer:
case Tsarray:
case Tarray:
break;
case Tvector:
t = ((TypeVector *)t)->basetype;
break;
default:
error(loc, "cannot use array to initialize %s", type->toChars());
goto Lerr;
}
length = 0;
for (i = 0; i < index.dim; i++)
{
Expression *idx = index[i];
if (idx)
{ idx = idx->semantic(sc);
idx = idx->ctfeInterpret();
index[i] = idx;
length = idx->toInteger();
}
Initializer *val = value[i];
ExpInitializer *ei = val->isExpInitializer();
if (ei && !idx)
ei->expandTuples = 1;
val = val->semantic(sc, t->nextOf(), needInterpret);
ei = val->isExpInitializer();
// found a tuple, expand it
if (ei && ei->exp->op == TOKtuple)
{
TupleExp *te = (TupleExp *)ei->exp;
index.remove(i);
value.remove(i);
for (size_t j = 0; j < te->exps->dim; ++j)
{
Expression *e = (*te->exps)[j];
index.insert(i + j, (Expression *)NULL);
value.insert(i + j, new ExpInitializer(e->loc, e));
}
i--;
continue;
}
else
{
value[i] = val;
}
length++;
if (length == 0)
{ error(loc, "array dimension overflow");
goto Lerr;
}
if (length > dim)
dim = length;
}
if (t->ty == Tsarray)
{
dinteger_t edim = ((TypeSArray *)t)->dim->toInteger();
if (dim > edim)
{
error(loc, "array initializer has %u elements, but array length is %lld", dim, edim);
goto Lerr;
}
}
if ((unsigned long) dim * t->nextOf()->size() >= amax)
{ error(loc, "array dimension %u exceeds max of %u", dim, amax / t->nextOf()->size());
goto Lerr;
}
return this;
Lerr:
return new ExpInitializer(loc, new ErrorExp());
}
Initializer *StructInitializer::semantic(Scope *sc, Type *t)
{
TypeStruct *ts;
int errors = 0;
//printf("StructInitializer::semantic(t = %s) %s\n", t->toChars(), toChars());
vars.setDim(field.dim);
t = t->toBasetype();
if (t->ty == Tstruct)
{ unsigned i;
unsigned fieldi = 0;
ts = (TypeStruct *)t;
ad = ts->sym;
for (i = 0; i < field.dim; i++)
{
Identifier *id = (Identifier *)field.data[i];
Initializer *val = (Initializer *)value.data[i];
Dsymbol *s;
VarDeclaration *v;
if (id == NULL)
{
if (fieldi >= ad->fields.dim)
{ //error(loc, "too many initializers for %s", ad->toChars());
field.remove(i);
i--;
continue;
}
else
{
s = (Dsymbol *)ad->fields.data[fieldi];
}
}
else
{
//s = ad->symtab->lookup(id);
s = ad->search(loc, id, 0);
if (!s)
{
// error(loc, "'%s' is not a member of '%s'", id->toChars(), t->toChars());
continue;
}
// Find out which field index it is
for (fieldi = 0; 1; fieldi++)
{
if (fieldi >= ad->fields.dim)
{
//s->error("is not a per-instance initializable field");
break;
}
if (s == (Dsymbol *)ad->fields.data[fieldi])
break;
}
}
if (s && (v = s->isVarDeclaration()) != NULL)
{
val = val->semantic(sc, v->type);
value.data[i] = (void *)val;
vars.data[i] = (void *)v;
}
else
{ //error(loc, "%s is not a field of %s", id ? id->toChars() : s->toChars(), ad->toChars());
errors = 1;
}
fieldi++;
}
}
else if (t->ty == Tdelegate && value.dim == 0)
{ /* Rewrite as empty delegate literal { }
*/
Arguments *arguments = new Arguments;
Type *tf = new TypeFunction(arguments, NULL, 0, LINKd);
FuncLiteralDeclaration *fd = new FuncLiteralDeclaration(loc, 0, tf, TOKdelegate, NULL);
fd->fbody = new CompoundStatement(loc, new Statements());
fd->endloc = loc;
Expression *e = new FuncExp(loc, fd);
ExpInitializer *ie = new ExpInitializer(loc, e);
return ie->semantic(sc, t);
}
else
{
//error(loc, "a struct is not a valid initializer for a %s", t->toChars());
errors = 1;
}
if (errors)
{
field.setDim(0);
value.setDim(0);
vars.setDim(0);
}
return this;
}
Initializer *ArrayInitializer::semantic(Scope *sc, Type *t, NeedInterpret needInterpret)
{
size_t length;
const unsigned amax = 0x80000000;
bool errors = false;
//printf("ArrayInitializer::semantic(%s)\n", t->toChars());
if (sem) // if semantic() already run
return this;
sem = true;
t = t->toBasetype();
switch (t->ty)
{
case Tsarray:
case Tarray:
break;
case Tvector:
t = ((TypeVector *)t)->basetype;
break;
case Taarray:
case Tstruct: // consider implicit constructor call
{
Expression *e;
if (t->ty == Taarray || isAssociativeArray())
e = toAssocArrayLiteral();
else
e = toExpression();
ExpInitializer *ei = new ExpInitializer(e->loc, e);
return ei->semantic(sc, t, needInterpret);
}
case Tpointer:
if (t->nextOf()->ty != Tfunction)
break;
default:
error(loc, "cannot use array to initialize %s", t->toChars());
goto Lerr;
}
type = t;
length = 0;
for (size_t i = 0; i < index.dim; i++)
{
Expression *idx = index[i];
if (idx)
{
sc = sc->startCTFE();
idx = idx->semantic(sc);
sc = sc->endCTFE();
idx = idx->ctfeInterpret();
index[i] = idx;
length = (size_t)idx->toInteger();
if (idx->op == TOKerror)
errors = true;
}
Initializer *val = value[i];
ExpInitializer *ei = val->isExpInitializer();
if (ei && !idx)
ei->expandTuples = true;
val = val->semantic(sc, t->nextOf(), needInterpret);
if (val->isErrorInitializer())
errors = true;
ei = val->isExpInitializer();
// found a tuple, expand it
if (ei && ei->exp->op == TOKtuple)
{
TupleExp *te = (TupleExp *)ei->exp;
index.remove(i);
value.remove(i);
for (size_t j = 0; j < te->exps->dim; ++j)
{
Expression *e = (*te->exps)[j];
index.insert(i + j, (Expression *)NULL);
value.insert(i + j, new ExpInitializer(e->loc, e));
}
i--;
continue;
}
else
{
value[i] = val;
}
length++;
if (length == 0)
{
error(loc, "array dimension overflow");
goto Lerr;
}
if (length > dim)
dim = length;
}
if (t->ty == Tsarray)
{
dinteger_t edim = ((TypeSArray *)t)->dim->toInteger();
if (dim > edim)
{
error(loc, "array initializer has %u elements, but array length is %lld", dim, edim);
goto Lerr;
}
}
if (errors)
goto Lerr;
if ((uinteger_t) dim * t->nextOf()->size() >= amax)
{
error(loc, "array dimension %u exceeds max of %u", (unsigned) dim, (unsigned)(amax / t->nextOf()->size()));
goto Lerr;
}
return this;
Lerr:
return new ErrorInitializer();
}
Initializer *StructInitializer::semantic(Scope *sc, Type *t, NeedInterpret needInterpret)
{
//printf("StructInitializer::semantic(t = %s) %s\n", t->toChars(), toChars());
t = t->toBasetype();
if (t->ty == Tsarray && t->nextOf()->toBasetype()->ty == Tstruct)
t = t->nextOf()->toBasetype();
if (t->ty == Tstruct)
{
StructDeclaration *sd = ((TypeStruct *)t)->sym;
if (sd->ctor)
{
error(loc, "%s %s has constructors, cannot use { initializers }, use %s( initializers ) instead",
sd->kind(), sd->toChars(), sd->toChars());
return new ErrorInitializer();
}
sd->size(loc);
if (sd->sizeok != SIZEOKdone)
return new ErrorInitializer();
size_t nfields = sd->fields.dim - sd->isNested();
//expandTuples for non-identity arguments?
Expressions *elements = new Expressions();
elements->setDim(nfields);
for (size_t i = 0; i < elements->dim; i++)
(*elements)[i] = NULL;
// Run semantic for explicitly given initializers
// TODO: this part is slightly different from StructLiteralExp::semantic.
bool errors = false;
for (size_t fieldi = 0, i = 0; i < field.dim; i++)
{
if (Identifier *id = field[i])
{
Dsymbol *s = sd->search(loc, id);
if (!s)
{
s = sd->search_correct(id);
if (s)
error(loc, "'%s' is not a member of '%s', did you mean '%s %s'?",
id->toChars(), sd->toChars(), s->kind(), s->toChars());
else
error(loc, "'%s' is not a member of '%s'", id->toChars(), sd->toChars());
return new ErrorInitializer();
}
s = s->toAlias();
// Find out which field index it is
for (fieldi = 0; 1; fieldi++)
{
if (fieldi >= nfields)
{
error(loc, "%s.%s is not a per-instance initializable field",
sd->toChars(), s->toChars());
return new ErrorInitializer();
}
if (s == sd->fields[fieldi])
break;
}
}
else if (fieldi >= nfields)
{
error(loc, "too many initializers for %s", sd->toChars());
return new ErrorInitializer();
}
VarDeclaration *vd = sd->fields[fieldi];
if ((*elements)[fieldi])
{
error(loc, "duplicate initializer for field '%s'", vd->toChars());
errors = true;
continue;
}
for (size_t j = 0; j < nfields; j++)
{
VarDeclaration *v2 = sd->fields[j];
bool overlap = (vd->offset < v2->offset + v2->type->size() &&
v2->offset < vd->offset + vd->type->size());
if (overlap && (*elements)[j])
{
error(loc, "overlapping initialization for field %s and %s",
v2->toChars(), vd->toChars());
errors = true;
continue;
}
}
assert(sc);
Initializer *iz = value[i];
iz = iz->semantic(sc, vd->type->addMod(t->mod), needInterpret);
Expression *ex = iz->toExpression();
if (ex->op == TOKerror)
{
errors = true;
continue;
}
value[i] = iz;
(*elements)[fieldi] = ex;
++fieldi;
}
if (errors)
return new ErrorInitializer();
StructLiteralExp *sle = new StructLiteralExp(loc, sd, elements, t);
if (!sd->fill(loc, elements, false))
return new ErrorInitializer();
sle->type = t;
ExpInitializer *ie = new ExpInitializer(loc, sle);
return ie->semantic(sc, t, needInterpret);
}
else if ((t->ty == Tdelegate || t->ty == Tpointer && t->nextOf()->ty == Tfunction) && value.dim == 0)
{
TOK tok = (t->ty == Tdelegate) ? TOKdelegate : TOKfunction;
/* Rewrite as empty delegate literal { }
*/
Parameters *arguments = new Parameters;
Type *tf = new TypeFunction(arguments, NULL, 0, LINKd);
FuncLiteralDeclaration *fd = new FuncLiteralDeclaration(loc, Loc(), tf, tok, NULL);
fd->fbody = new CompoundStatement(loc, new Statements());
fd->endloc = loc;
Expression *e = new FuncExp(loc, fd);
ExpInitializer *ie = new ExpInitializer(loc, e);
return ie->semantic(sc, t, needInterpret);
}
error(loc, "a struct is not a valid initializer for a %s", t->toChars());
return new ErrorInitializer();
}
Expression *StructInitializer::fill(Scope *sc, Type *t, NeedInterpret needInterpret)
{
//printf("StructInitializer::fill(sc = %p, '%s')\n", sc, toChars());
assert(t->ty == Tstruct);
StructDeclaration *sd = ((TypeStruct *)t)->sym;
sd->size(loc);
if (sd->sizeok != SIZEOKdone)
return new ErrorExp();
size_t nfields = sd->fields.dim - sd->isNested();
Expressions *elements = new Expressions();
elements->setDim(nfields);
for (size_t i = 0; i < elements->dim; i++)
(*elements)[i] = NULL;
// Run semantic for explicitly given initializers
bool errors = false;
for (size_t fieldi = 0, i = 0; i < field.dim; i++)
{
if (Identifier *id = field[i])
{
Dsymbol *s = sd->search(loc, id, 0);
if (!s)
{
s = sd->search_correct(id);
if (s)
error(loc, "'%s' is not a member of '%s', did you mean '%s %s'?",
id->toChars(), sd->toChars(), s->kind(), s->toChars());
else
error(loc, "'%s' is not a member of '%s'", id->toChars(), sd->toChars());
return new ErrorExp();
}
s = s->toAlias();
// Find out which field index it is
for (fieldi = 0; 1; fieldi++)
{
if (fieldi >= nfields)
{
error(loc, "%s.%s is not a per-instance initializable field",
sd->toChars(), s->toChars());
return new ErrorExp();
}
if (s == sd->fields[fieldi])
break;
}
}
else if (fieldi >= nfields)
{
error(loc, "too many initializers for %s", sd->toChars());
return new ErrorExp();
}
VarDeclaration *vd = sd->fields[fieldi];
if ((*elements)[fieldi])
{
error(loc, "duplicate initializer for field '%s'", vd->toChars());
errors = true;
continue;
}
for (size_t j = 0; j < nfields; j++)
{
VarDeclaration *v2 = sd->fields[j];
bool overlap = (vd->offset < v2->offset + v2->type->size() &&
v2->offset < vd->offset + vd->type->size());
if (overlap && (*elements)[j])
{
error(loc, "overlapping initialization for field %s and %s",
v2->toChars(), vd->toChars());
errors = true;
continue;
}
}
assert(sc);
Initializer *iz = value[i];
iz = iz->semantic(sc, vd->type->addMod(t->mod), needInterpret);
Expression *ex = iz->toExpression();
if (ex->op == TOKerror)
{
errors = true;
continue;
}
value[i] = iz;
(*elements)[fieldi] = ex;
++fieldi;
}
if (errors)
return new ErrorExp();
// Fill in missing any elements with default initializers
for (size_t i = 0; i < elements->dim; i++)
{
if ((*elements)[i])
continue;
VarDeclaration *vd = sd->fields[i];
VarDeclaration *vx = vd;
if (vd->init && vd->init->isVoidInitializer())
vx = NULL;
// Find overlapped fields with the hole [vd->offset .. vd->offset->size()].
size_t fieldi = i;
for (size_t j = 0; j < nfields; j++)
{
if (i == j)
continue;
VarDeclaration *v2 = sd->fields[j];
if (v2->init && v2->init->isVoidInitializer())
continue;
bool overlap = (vd->offset < v2->offset + v2->type->size() &&
v2->offset < vd->offset + vd->type->size());
if (!overlap)
continue;
if ((*elements)[j])
{
vx = NULL;
break;
}
#if 1
/* Prefer first found non-void-initialized field
* union U { int a; int b = 2; }
* U u; // Error: overlapping initialization for field a and b
*/
if (!vx)
vx = v2, fieldi = j;
else if (v2->init)
{
error(loc, "overlapping initialization for field %s and %s",
v2->toChars(), vd->toChars());
}
#else // fix Bugzilla 1432
/* Prefer explicitly initialized field
* union U { int a; int b = 2; }
* U u; // OK (u.b == 2)
*/
if (!vx || !vx->init && v2->init)
vx = v2, fieldi = j;
else if (vx->init && v2->init)
{
error(loc, "overlapping default initialization for field %s and %s",
v2->toChars(), vd->toChars());
}
else
assert(vx->init || !vx->init && !v2->init);
#endif
}
if (vx)
{
if (vx->init)
{
assert(!vx->init->isVoidInitializer());
if (vx->scope)
{
// Do deferred semantic analysis
Initializer *i2 = vx->init->syntaxCopy();
i2 = i2->semantic(vx->scope, vx->type, INITinterpret);
(*elements)[fieldi] = i2->toExpression();
if (!global.gag)
{
vx->scope = NULL;
vx->init = i2; // save result
}
}
else
(*elements)[fieldi] = vx->init->toExpression();
}
else
(*elements)[fieldi] = vx->type->defaultInit();
}
}
for (size_t i = 0; i < elements->dim; i++)
{
Expression *e = (*elements)[i];
if (e && e->op == TOKerror)
return e;
}
Expression *e = new StructLiteralExp(loc, sd, elements, t);
if (sc)
e = e->semantic(sc);
else
e->type = sd->type; // from glue layer
return e;
}
