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Introduce java_reference_typet #4490

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Merged
merged 2 commits into from
Apr 8, 2019
Merged

Introduce java_reference_typet #4490

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f636d61
introduce java_reference_typet
Apr 6, 2019
3464534
use java_reference_typet
Apr 6, 2019
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9 changes: 7 additions & 2 deletions jbmc/src/java_bytecode/java_types.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,12 @@ reference_typet java_reference_type(const typet &subtype)
return reference_type(subtype);
}

reference_typet java_lang_object_type()
java_reference_typet java_reference_type(const struct_tag_typet &subtype)
{
return to_java_reference_type(reference_type(subtype));
}

java_reference_typet java_lang_object_type()
{
static const auto result =
java_reference_type(struct_tag_typet("java::java.lang.Object"));
Expand All @@ -102,7 +107,7 @@ reference_typet java_lang_object_type()
/// java::array[]. Its ID_element_type is set to the corresponding primitive
/// type, or void* for arrays of references.
/// \param subtype: Character indicating the type of array
reference_typet java_array_type(const char subtype)
java_reference_typet java_array_type(const char subtype)
{
std::string subtype_str;

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47 changes: 45 additions & 2 deletions jbmc/src/java_bytecode/java_types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -360,6 +360,48 @@ inline java_method_typet &to_java_method_type(typet &type)
return static_cast<java_method_typet &>(type);
}

/// This is a specialization of reference_typet.
/// The subtype is guaranteed to be a struct_tag_typet.
class java_reference_typet : public reference_typet
{
public:
explicit java_reference_typet(
const struct_tag_typet &_subtype,
std::size_t _width)
: reference_typet(_subtype, _width)
{
}

struct_tag_typet &subtype()
{
return static_cast<struct_tag_typet &>(reference_typet::subtype());
}

const struct_tag_typet &subtype() const
{
return static_cast<const struct_tag_typet &>(reference_typet::subtype());
}
};

template <>
inline bool can_cast_type<java_reference_typet>(const typet &type)
{
return type.id() == ID_pointer &&
to_type_with_subtype(type).subtype().id() == ID_struct_tag;
}

inline const java_reference_typet &to_java_reference_type(const typet &type)
{
PRECONDITION(can_cast_type<java_reference_typet>(type));
return static_cast<const java_reference_typet &>(type);
}

inline java_reference_typet &to_java_reference_type(typet &type)
{
PRECONDITION(can_cast_type<java_reference_typet>(type));
return static_cast<java_reference_typet &>(type);
}

signedbv_typet java_int_type();
signedbv_typet java_long_type();
signedbv_typet java_short_type();
Expand All @@ -369,11 +411,12 @@ floatbv_typet java_float_type();
floatbv_typet java_double_type();
c_bool_typet java_boolean_type();
empty_typet java_void_type();
java_reference_typet java_reference_type(const struct_tag_typet &subtype);
reference_typet java_reference_type(const typet &subtype);
reference_typet java_lang_object_type();
java_reference_typet java_lang_object_type();
struct_tag_typet java_classname(const std::string &);

reference_typet java_array_type(const char subtype);
java_reference_typet java_array_type(const char subtype);
const typet &java_array_element_type(const struct_tag_typet &array_symbol);
typet &java_array_element_type(struct_tag_typet &array_symbol);
bool is_java_array_type(const typet &type);
Expand Down