void Declaration::checkModify(Loc loc, Scope *sc, Type *t)
{
if (sc->incontract && isParameter())
error(loc, "cannot modify parameter '%s' in contract", toChars());
if (sc->incontract && isResult())
error(loc, "cannot modify result '%s' in contract", toChars());
if (isCtorinit() && !t->isMutable())
{ // It's only modifiable if inside the right constructor
Dsymbol *s = sc->func;
while (1)
{
FuncDeclaration *fd = NULL;
if (s)
fd = s->isFuncDeclaration();
if (fd &&
((fd->isCtorDeclaration() && storage_class & STCfield) ||
(fd->isStaticCtorDeclaration() && !(storage_class & STCfield))) &&
fd->toParent() == toParent()
)
{
VarDeclaration *v = isVarDeclaration();
assert(v);
v->ctorinit = 1;
//printf("setting ctorinit\n");
}
else
{
if (s)
{ s = s->toParent2();
continue;
}
else
{
const char *p = isStatic() ? "static " : "";
error(loc, "can only initialize %sconst %s inside %sconstructor",
p, toChars(), p);
}
}
break;
}
}
else
{
VarDeclaration *v = isVarDeclaration();
if (v && v->canassign == 0)
{
const char *p = NULL;
if (isConst())
p = "const";
else if (isImmutable())
p = "immutable";
else if (storage_class & STCmanifest)
p = "enum";
else if (!t->isAssignable())
p = "struct with immutable members";
if (p)
{ error(loc, "cannot modify %s", p);
}
}
}
}
