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semantics.h
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semantics.h
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/* Authored By Charlie Keaney */
/* semantics.h - Responsible for holding
semantic information. */
#ifndef SEMANTICS_H
#define SEMANTICS_H 1
/*****************************************************//**
* Declarations *
/********************************************************/
enum class Scope {
UNDEFINED = 0,
BLOCK,
FILE,
FUNCTION,
FUNCTION_PROTOTYPE,
};
static
const char* scope_string_repr[]{
"UNDEFINED",
"BLOCK",
"FILE",
"FUNCTION",
"FUNCTION_PROTOTYPE"
};
enum class IdentifierClassifier {
UNDEFINED,
OBJECT,
FUNCTION,
MEMBER,
TYPEDEF_NAME,
LABEL_NAME,
MACRO_NAME,
MACRO_PARAMETER
};
static
const char* identifier_classifier_string_repr[]{
"UNDEFINED",
"OBJECT",
"FUNCTION",
"MEMBER",
"TYPEDEF_NAME",
"LABEL_NAME",
"MACRO_NAME",
"MACRO_PARAMETER"
};
enum class StorageClassSpecifier {
UNDEFINED,
UNSPECIFIED,
TYPEDEF,
EXTERN,
STATIC,
AUTO,
REGISTER
};
enum class TypeQualifiers {
UNQUALIFIED = 0x0,
CONST = 0x1,
VOLATILE = 0X2,
CONST_VOLATILE = CONST + VOLATILE,
RESTRICT = 0X4,
CONST_RESTRICT = CONST + RESTRICT,
VOLATILE_RESTRICT = VOLATILE + RESTRICT,
CONST_VOLATILE_RESTRICT = CONST + VOLATILE + RESTRICT,
UNDEFINED = 0x8,
};
enum class FunctionSpecifiers {
UNDEFINED,
UNSPECIFIED,
INLINE
};
enum class TypeCategory {
UNDEFINED = 0,
SIGNED_CHAR,
UNSIGNED_CHAR,
SIGNED_SHORT,
UNSIGNED_SHORT,
SIGNED_INT,
UNSIGNED_INT,
SIGNED_LONG,
UNSIGNED_LONG,
SIGNED_LONG_LONG,
UNSIGNED_LONG_LONG,
FLOAT,
DOUBLE,
LONG_DOUBLE,
BOOL,
COMPLEX,
FUNCTION,
INCOMPLETE
};
/* Forward declaration of all types. */
struct BasicType;
struct ArrayType;
struct MemberObject;
struct PointerType;
struct StructureType;
struct UnionType;
struct ObjectType;
struct Type;
enum class BasicTypeName {
UNDEFINED = 0,
SIGNED_CHAR,
UNSIGNED_CHAR,
SIGNED_SHORT,
UNSIGNED_SHORT,
SIGNED_INT,
UNSIGNED_INT,
SIGNED_LONG,
UNSIGNED_LONG,
SIGNED_LONG_LONG,
UNSIGNED_LONG_LONG,
FLOAT,
DOUBLE,
LONG_DOUBLE,
BOOL,
COMPLEX,
ARRAY,
STRUCTURE,
UNION,
POINTER
};
struct BasicType {
BasicTypeName name;
TypeQualifiers qualifier;
};
struct ArrayType {
Type* element_type;
int number_of_elements;
TypeQualifiers qualifier;
};
struct MemberObject {
const char* name;
ObjectType* object_type;
MemberObject* next_member;
};
struct PointerType {
const Type* referenced_type;
TypeQualifiers qualifier;
};
struct StructureType {
const MemberObject* member_object_list;
TypeQualifiers qualifier;
};
struct UnionType {
const MemberObject* member_object_list;
TypeQualifiers qualifier;
};
struct IncompleteType {
// TODO;
};
enum class ObjectTypeName {
UNDEFINED = 0,
BASIC_TYPE,
ARRAY,
STRUCTURE,
UNION,
POINTER
};
struct ObjectType {
ObjectTypeName object_type_name;
union {
BasicType basic_type;
ArrayType array_type;
StructureType structure_type;
UnionType union_type;
PointerType pointer_type;
};
};
struct Parameter {
const Type* parameter_type;
const char* parameter_name;
const Parameter* next_parameter;
};
struct FunctionType {
const Type* return_type;
int number_of_parameters;
const Parameter* parameter_list;
};
enum class TypeClassifier {
UNDEFINED,
OBJECT,
FUNCTION,
INCOMPLETE
};
struct Type {
TypeClassifier classifier;
union {
ObjectType object_type; /* OBJECT */
FunctionType function_type; /* FUNCTION */
IncompleteType incomplete_type; /* INCOMPLETE */
};
};
static inline
Type* construct_basic_type(
BasicTypeName const& basic_type_name,
TypeQualifiers const& qualifier = TypeQualifiers::UNQUALIFIED);
static inline
Type* construct_void_type();
static inline
Type* construct_derived_array(
Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& type_qualifier);
inline Type* construct_derived_union(
Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& type_qualifier = TypeQualifiers::UNQUALIFIED);
static inline
Type* construct_function_type(
const Type* const& return_type,
int const& number_of_parameters,
const Parameter* const& parameter_list);
static inline
Type* construct_derived_pointer_type(
const Type* const& referenced_type,
TypeQualifiers const& qualifier);
static inline
Type* construct_basic_type(
BasicTypeName const& basic_type_name,
TypeQualifiers const& qualifier);
static inline
Type* construct_derived_structure(
const Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& qualifier);
static inline
Type* construct_derived_union(
const Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& type_qualifier);
static inline
Type* construct_function_type(
const Type* const& return_type,
int const& number_of_parameters,
const Parameter* const& parameter_list,
TypeQualifiers const& qualifier);
static inline
Type* construct_derived_pointer_type(
const Type* const& referenced_type,
const TypeQualifiers const& qualifier);
static inline
void print_union_type(
const UnionType* const& t);
static inline
void print_basic_type(
const BasicType* const& t);
static inline
void print_parameter(
const Parameter* const& t);
static inline
void print_function_type(
const FunctionType* const& t);
static inline
void print_pointer_type(
const PointerType* const& t);
static inline
void print_object_type(
const ObjectType* const& t);
static inline
void print_incomplete_type(
const IncompleteType* const& t);
static inline
void print_array_type(
const ArrayType* const& t);
static inline
void print_member_object(
const MemberObject* const& t);
static inline
void print_structure_type(
const StructureType* const& t);
static inline
void print_type(
const Type* const& t);
static inline
const int get_sizeof_basic_type(
const BasicType* const& type);
static inline
const int get_sizeof_structure_type(
const StructureType* const& type);
static inline
const int get_sizeof_union_type(
const UnionType* const& type);
static inline
const int get_sizeof_incomplete_type(
const IncompleteType* const& type);
static inline
const int get_sizeof_array_type(
const ArrayType* const& type);
static inline
const int get_sizeof_object_type(
const ObjectType* const& type);
static inline
const int get_sizeof_type(
const Type* const& type);
static inline
void duplicate_type(
const Type* const& input,
const Type* & output);
static inline
bool types_are_equivalent(
const Type* const& a,
const Type* const& b);
static inline
bool is_object_type(
const Type* const& type);
static inline
bool is_function_type(
const Type* const& type);
static inline
bool is_incomplete_type(
const Type* const& type);
static inline
bool is_integer_type(
const Type* const& type);
static inline
bool is_real_floating_type(
const Type* const& type);
static inline
bool is_arithmetic_type(
const Type* const& type);
static inline
bool is_pointer_type(
const Type* const& type);
static inline
bool is_scalar_type(
const Type* const& type);
static inline
bool is_declared_as_register(
const Type* const& type);
/* Print types. */
static const char* type_qualifier_string_repr[] {
"",
"const",
"volatile",
"const volatile",
"restrict",
"const restrict",
"volatile restrict",
"const volatile restrict",
"undefined type qualifier"
};
#define print_type_qualifier(q) \
cout << type_qualifier_string_repr[(int) q]
static const char* basic_type_string_repr[]{
"undefined type",
"signed char",
"unsigned char",
"signed short",
"unsigned short",
"signed int",
"unsigned int",
"signed long",
"unsigned long",
"signed long long",
"unsigned long long",
"float",
"double",
"long double",
"bool",
"_complex"
};
static inline
bool basic_types_are_equivalent(
const BasicType* const& a,
const BasicType* const& b);
static inline
bool member_object_types_are_equivalent(
const MemberObject* const& a,
const MemberObject* const& b);
static inline
bool structure_types_are_equivalent(
const StructureType* const& a,
const StructureType* const& b);
static inline
bool union_types_are_equivalent(
const UnionType* const& a,
const UnionType* const& b);
static inline
bool pointer_types_are_equivalent(
const PointerType* const& a,
const PointerType* const& b);
static inline
bool object_types_are_equivalent(
const ObjectType* const& a,
const ObjectType* const& b);
static inline
bool types_are_equivalent(
const Type* const& a,
const Type* const& b);
static inline
bool is_object_type(
const Type* const& type);
static inline
bool is_function_type(
const Type* const& type);
static inline
bool is_array_type(
const Type* const& type);
static inline
bool is_struct_type(
const Type* const& type);
static inline
bool is_union_type(
const Type* const& type);
static inline
bool is_incomplete_type(
const Type* const& type);
static inline
bool is_void_type(
const Type* const& type);
static inline
bool is_signed_integer_type(
const Type* const& type);
static inline
bool is_unsigned_integer_type(
const Type* const& type);
static inline
bool is_integer_type(
const Type* const& type);
static inline
bool is_real_floating_type(
const Type* const& type);
static inline
bool is_arithmetic_type(
const Type* const& type);
static inline
bool is_pointer_type(
const Type* const& type);
static inline
bool is_scalar_type(
const Type* const& type);
static inline
bool is_declared_as_register(
const Type* const& type);
static inline
bool is_lvalue_type(
const Type* const& type);
static inline
bool is_const_qualified_type(
const Type* const& type);
static inline
bool is_container_for_const_qualified_type(
const Type* const& type);
static inline
bool is_parenthesized_incomplete_type(
const Type* const& type);
static inline
bool is_modifiable_lvalue_type(
const Type* const& type);
/*****************************************************//**
* Definitions *
/********************************************************/
static inline
bool basic_types_are_equivalent(
const BasicType* const& a,
const BasicType* const& b)
{
const bool are_equivalent
= (a->name == b->name)
&& (a->qualifier == b->qualifier);
return are_equivalent;
}
static inline
bool array_types_are_equivalent(
const ArrayType* const& a,
const ArrayType* const& b)
{
const bool are_equivalent
= a->qualifier
!= b->qualifier
&& a->number_of_elements
!= b->number_of_elements
&& types_are_equivalent(
a->element_type,
b->element_type);
return are_equivalent;
}
static inline
bool member_object_types_are_equivalent(
const MemberObject* const& a,
const MemberObject* const& b)
{
bool are_equivalent = true;
const MemberObject* x = a;
const MemberObject* y = b;
do {
if (((x != NULL) == (y != NULL))
|| object_types_are_equivalent(
x->object_type,
y->object_type)) {
x = x->next_member;
y = y->next_member;
} else {
are_equivalent = false;
break;
}
} while (x || y);
return are_equivalent;
}
static inline
bool structure_types_are_equivalent(
const StructureType* const& a,
const StructureType* const& b)
{
const bool are_equivalent
= a->qualifier == b->qualifier
&& member_object_types_are_equivalent(
a->member_object_list,
b->member_object_list);
return are_equivalent;
}
static inline
bool union_types_are_equivalent(
const UnionType* const& a,
const UnionType* const& b)
{
const bool are_equivalent
= a->qualifier == b->qualifier
&& member_object_types_are_equivalent(
a->member_object_list,
b->member_object_list);
return are_equivalent;
}
static inline
bool pointer_types_are_equivalent(
const PointerType* const& a,
const PointerType* const& b)
{
const bool are_equivalent
= a->qualifier == b->qualifier
&& types_are_equivalent(
a->referenced_type,
b->referenced_type);
return are_equivalent;
}
static inline
bool object_types_are_equivalent(
const ObjectType* const& a,
const ObjectType* const& b)
{
bool are_equivalent
= a->object_type_name
== b->object_type_name;
if (are_equivalent) {
switch (a->object_type_name) {
case ObjectTypeName::UNDEFINED:
cout << "UNDEFINED";
break;
case ObjectTypeName::BASIC_TYPE:
are_equivalent
= basic_types_are_equivalent(
&a->basic_type,
&b->basic_type);
break;
case ObjectTypeName::ARRAY:
are_equivalent
= array_types_are_equivalent(
&a->array_type,
&b->array_type);
break;
case ObjectTypeName::STRUCTURE:
are_equivalent
= structure_types_are_equivalent(
&a->structure_type,
&b->structure_type);
break;
case ObjectTypeName::UNION:
are_equivalent
= union_types_are_equivalent(
&a->union_type,
&b->union_type);
break;
case ObjectTypeName::POINTER:
are_equivalent
= pointer_types_are_equivalent(
&a->pointer_type,
&b->pointer_type);
break;
default:
break;
}
}
return are_equivalent;
}
static inline
Type* construct_basic_type(
BasicTypeName const& basic_type_name,
TypeQualifiers const& qualifier)
{
Type* output = new Type();
output->classifier = TypeClassifier::OBJECT;
ObjectType* const object_type = &output->object_type;
object_type->object_type_name = ObjectTypeName::BASIC_TYPE;
BasicType* const basic_type = &object_type->basic_type;
basic_type->name = basic_type_name;
basic_type->qualifier = qualifier;
return output;
}
static inline
Type* construct_void_type()
{
Type* output = new Type();
output->classifier = TypeClassifier::INCOMPLETE;
// TODO; stub.
return output;
}
static inline
Type* construct_derived_array(
Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& type_qualifier)
{
Type* output = new Type();
output->classifier = TypeClassifier::OBJECT;
ObjectType* const object_type = &output->object_type;;
object_type->object_type_name = ObjectTypeName::ARRAY;
ArrayType* const array_type = &object_type->array_type;
array_type->element_type = basic_type_name;
array_type->number_of_elements = number_of_elements;
array_type->qualifier = type_qualifier;
return output;
}
inline Type* construct_derived_structure(
Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& qualifier = TypeQualifiers::UNQUALIFIED)
{
Type* output = new Type();
output->classifier = TypeClassifier::OBJECT;
ObjectType* object_type = &output->object_type;;
object_type->object_type_name = ObjectTypeName::STRUCTURE;
StructureType* structure_type = &object_type->structure_type;
structure_type->qualifier = qualifier;
return output;
}
inline Type* construct_derived_union(
Type* const& basic_type_name,
int const& number_of_elements,
TypeQualifiers const& type_qualifier)
{
Type* output = new Type();
output->classifier = TypeClassifier::OBJECT;
ObjectType* object_type = &output->object_type;;
object_type->object_type_name = ObjectTypeName::UNION;
return output;
}
static inline
Type* construct_function_type(
const Type* const& return_type,
int const& number_of_parameters,
const Parameter* const& parameter_list)
{
Type* output = new Type();
output->classifier = TypeClassifier::FUNCTION;
FunctionType* const function_type = &output->function_type;
function_type->number_of_parameters = number_of_parameters;
function_type->parameter_list = parameter_list;
function_type->return_type = return_type;
return output;
}
static inline
Type* construct_derived_pointer_type(
const Type* const& referenced_type,
TypeQualifiers const& qualifier)
{
Type* output = new Type();
output->classifier = TypeClassifier::OBJECT;
ObjectType* const object_type = &output->object_type;;
object_type->object_type_name = ObjectTypeName::POINTER;
PointerType* const pointer_type = &object_type->pointer_type;
pointer_type->referenced_type = referenced_type;
pointer_type->qualifier = qualifier;
return output;
}
static inline
void print_union_type(
const UnionType* const& t)
{
print_type_qualifier(t->qualifier);
cout << "UNION "
<< "{ ";
print_member_object(t->member_object_list);
cout << " }";
}
static inline
void print_basic_type(
const BasicType* const& t)
{
print_type_qualifier(t->qualifier);
cout << basic_type_string_repr[(int)t->name];
}
static inline
void print_parameter(
const Parameter* const& t)
{
print_type(t->parameter_type);
cout << " ";
// cout << t->parameter_name;
if (t->next_parameter != NULL) {
cout << ", ";
print_parameter(t->next_parameter);
}
}
static inline
void print_function_type(
const FunctionType* const& t)
{
print_type(t->return_type);
cout << " ( ";
print_parameter(t->parameter_list);
cout << " )";
}
static inline
void print_pointer_type(
const PointerType* const& t)
{
print_type_qualifier(t->qualifier);
cout << " ";
print_type(t->referenced_type);
cout << "*";
}
static inline
void print_object_type(
const ObjectType* const& t)
{
switch (t->object_type_name) {
case ObjectTypeName::UNDEFINED:
cout << "UNDEFINED";
break;
case ObjectTypeName::BASIC_TYPE:
print_basic_type(&t->basic_type);
break;
case ObjectTypeName::ARRAY:
print_array_type(&t->array_type);
break;
case ObjectTypeName::STRUCTURE:
print_structure_type(&t->structure_type);
break;
case ObjectTypeName::UNION:
print_union_type(&t->union_type);
break;
case ObjectTypeName::POINTER:
print_pointer_type(&t->pointer_type);
break;
default:
break;
}
}
static inline
void print_incomplete_type(
const IncompleteType* const& t)
{
// TODO;
}
static inline
void print_array_type(
const ArrayType* const& t)
{
cout << type_qualifier_string_repr[(int)t->qualifier]
<< "ARRAY OF ";
print_type(t->element_type);
cout << " x "
<< t->number_of_elements;
}
static inline
void print_member_object(
const MemberObject* const& t)
{
print_object_type(t->object_type);
cout << " "
<< t->name;
if (t->next_member) {
cout << ", ";
print_member_object(t->next_member);
}
}
static inline
void print_structure_type(
const StructureType* const& t)
{
print_type_qualifier(t->qualifier);
cout << "struct "
<< "{ ";
print_member_object(t->member_object_list);
cout << " }";
}
static inline
void print_type(
const Type* const& t)
{
switch (t->classifier) {
case TypeClassifier::UNDEFINED:
cout << "undefined type";
break;
case TypeClassifier::OBJECT:
print_object_type(&t->object_type);
break;
case TypeClassifier::FUNCTION:
print_function_type(&t->function_type);
break;
case TypeClassifier::INCOMPLETE:
print_incomplete_type(&t->incomplete_type);
break;
default:
break;
}
}
static inline
const int get_sizeof_basic_type(
const BasicType* const& type)
{
static const int sizeof_basic_type_map[] = {
0, //UNDEFINED,
sizeof(signed char), //SIGNED_CHAR,
sizeof(unsigned char), //UNSIGNED_CHAR,
sizeof(signed short), //SIGNED_SHORT,
sizeof(unsigned short), //UNSIGNED_SHORT,
sizeof(signed int), //SIGNED_INT,
sizeof(unsigned int), //UNSIGNED_INT,
sizeof(signed long), //SIGNED_LONG,
sizeof(unsigned long), //UNSIGNED_LONG,
sizeof(signed long long), //SIGNED_LONG_LONG,
sizeof(unsigned long long), //UNSIGNED_LONG_LONG,
sizeof(float), //FLOAT,
sizeof(double), //DOUBLE,
sizeof(long double), //LONG_DOUBLE,
sizeof(bool), //BOOL,
sizeof(_complex) //COMPLEX,
};
const int h = (int) type->name;
const int sizeof_basic_type = sizeof_basic_type_map[h];
return sizeof_basic_type;
}
static inline
const int get_sizeof_structure_type(