exprt c_typecheck_baset::do_initializer_list(
const exprt &value,
const typet &type,
bool force_constant)
{
assert(value.id()==ID_initializer_list);
if(type.id()==ID_symbol)
return do_initializer_list(
value, follow(type), force_constant);
exprt result;
if(type.id()==ID_struct ||
type.id()==ID_array ||
type.id()==ID_union)
{
// start with zero everywhere
result=zero_initializer(type, value.location());
}
else if(type.id()==ID_incomplete_array)
{
// start with empty array
result=exprt(ID_array, type);
result.location()=value.location();
}
else
{
// The initializer for a scalar shall be a single expression,
// * optionally enclosed in braces. *
if(value.operands().size()==1)
return do_initializer_rec(value.op0(), type, force_constant);
err_location(value);
str << "cannot initialize `" << to_string(type) << "' with "
"an initializer list";
throw 0;
}
designatort current_designator;
designator_enter(type, current_designator);
forall_operands(it, value)
{
do_designated_initializer(
result, current_designator, *it, force_constant);
// increase designator -- might go up
increment_designator(current_designator);
}
exprt c_typecheck_baset::do_initializer_list(
const exprt &value,
const typet &type,
bool force_constant)
{
assert(value.id()==ID_initializer_list);
const typet &full_type=follow(type);
exprt result;
if(full_type.id()==ID_struct ||
full_type.id()==ID_union ||
full_type.id()==ID_vector)
{
// start with zero everywhere
result=
zero_initializer(
type, value.source_location(), *this, get_message_handler());
}
else if(full_type.id()==ID_array)
{
if(to_array_type(full_type).size().is_nil())
{
// start with empty array
result=exprt(ID_array, full_type);
result.add_source_location()=value.source_location();
}
else
{
// start with zero everywhere
result=
zero_initializer(
type, value.source_location(), *this, get_message_handler());
}
// 6.7.9, 14: An array of character type may be initialized by a character
// string literal or UTF-8 string literal, optionally enclosed in braces.
if(value.operands().size()>=1 &&
value.op0().id()==ID_string_constant &&
(full_type.subtype().id()==ID_signedbv ||
full_type.subtype().id()==ID_unsignedbv) &&
full_type.subtype().get(ID_width)==char_type().get(ID_width))
{
if(value.operands().size()>1)
{
warning().source_location=value.find_source_location();
warning() << "ignoring excess initializers" << eom;
}
return do_initializer_rec(value.op0(), type, force_constant);
}
}
else
{
// The initializer for a scalar shall be a single expression,
// * optionally enclosed in braces. *
if(value.operands().size()==1)
return do_initializer_rec(value.op0(), type, force_constant);
err_location(value);
error() << "cannot initialize `" << to_string(full_type)
<< "' with an initializer list" << eom;
throw 0;
}
designatort current_designator;
designator_enter(type, current_designator);
forall_operands(it, value)
{
do_designated_initializer(
result, current_designator, *it, force_constant);
// increase designator -- might go up
increment_designator(current_designator);
}