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cppSimpleType.cxx
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272 lines (231 loc) · 5.41 KB
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/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file cppSimpleType.cxx
* @author drose
* @date 1999-10-19
*/
#include "cppSimpleType.h"
#include "cppGlobals.h"
/**
*
*/
CPPSimpleType::
CPPSimpleType(CPPSimpleType::Type type, int flags) :
CPPType(CPPFile()),
_type(type), _flags(flags)
{
}
/**
* Returns true if the type, or any nested type within the type, is a
* CPPTBDType and thus isn't fully determined right now. In this case,
* calling resolve_type() may or may not resolve the type.
*/
bool CPPSimpleType::
is_tbd() const {
return (_type == T_unknown);
}
/**
* Returns true if the type is a boolean, floating point or integral type.
*/
bool CPPSimpleType::
is_arithmetic() const {
return (_type > T_unknown && _type < T_void);
}
/**
* Returns true if the type is considered a fundamental type.
*/
bool CPPSimpleType::
is_fundamental() const {
return (_type != T_unknown && _type != T_parameter && _type != T_auto);
}
/**
* Returns true if the type is considered a standard layout type.
*/
bool CPPSimpleType::
is_standard_layout() const {
return (_type != T_unknown && _type != T_parameter && _type != T_auto);
}
/**
* Returns true if the type is considered a Plain Old Data (POD) type.
*/
bool CPPSimpleType::
is_trivial() const {
return true;
}
/**
* Returns true if the type can be constructed using the given argument.
*/
bool CPPSimpleType::
is_constructible(const CPPType *given_type) const {
given_type = ((CPPType *)given_type)->remove_reference()->remove_cv();
const CPPSimpleType *simple_type = given_type->as_simple_type();
if (simple_type == nullptr) {
return given_type->is_enum() && is_arithmetic();
} else if (_type == T_nullptr) {
return simple_type->_type == T_nullptr;
} else if (_type == T_bool) {
return simple_type->is_arithmetic() || simple_type->_type == T_nullptr;
} else if (is_arithmetic()) {
return simple_type->is_arithmetic();
} else {
return false;
}
}
/**
* Returns true if the type is default-constructible.
*/
bool CPPSimpleType::
is_default_constructible() const {
return (_type != T_void);
}
/**
* Returns true if the type is copy-constructible.
*/
bool CPPSimpleType::
is_copy_constructible() const {
return (_type != T_void);
}
/**
* Returns true if the type is copy-assignable.
*/
bool CPPSimpleType::
is_copy_assignable() const {
return (_type != T_void);
}
/**
* Returns true if the type is destructible.
*/
bool CPPSimpleType::
is_destructible() const {
return (_type != T_void);
}
/**
* Returns true if the type is a special parameter expression type.
*
* This sort of type is created to handle instance declarations that initially
* look like function prototypes.
*/
bool CPPSimpleType::
is_parameter_expr() const {
return (_type == T_parameter);
}
/**
*
*/
std::string CPPSimpleType::
get_preferred_name() const {
// Simple types always prefer to use their native types.
return get_local_name();
}
/**
*
*/
void CPPSimpleType::
output(std::ostream &out, int, CPPScope *, bool) const {
if (_flags & F_unsigned) {
out << "unsigned ";
}
if (_flags & F_signed) {
out << "signed ";
}
if ((_type == T_int && (_flags & F_longlong) != 0) &&
!cpp_longlong_keyword.empty()) {
// It's a long long, and we have a specific long long type name. This is
// to output code for compilers that don't recognize "long long int".
out << cpp_longlong_keyword;
return;
}
if (_flags & F_longlong) {
out << "long long ";
} else if (_flags & F_long) {
out << "long ";
} else if (_flags & F_short) {
out << "short ";
}
switch (_type) {
case T_unknown:
out << "unknown";
break;
case T_bool:
out << "bool";
break;
case T_char:
out << "char";
break;
case T_wchar_t:
out << "wchar_t";
break;
case T_char16_t:
out << "char16_t";
break;
case T_char32_t:
out << "char32_t";
break;
case T_int:
out << "int";
break;
case T_float:
out << "float";
break;
case T_double:
out << "double";
break;
case T_void:
out << "void";
break;
case T_nullptr:
out << "decltype(nullptr)";
break;
case T_parameter:
out << "parameter";
break;
case T_auto:
out << "auto";
break;
default:
out << "***invalid type***";
}
}
/**
*
*/
CPPDeclaration::SubType CPPSimpleType::
get_subtype() const {
return ST_simple;
}
/**
*
*/
CPPSimpleType *CPPSimpleType::
as_simple_type() {
return this;
}
/**
* Called by CPPDeclaration() to determine whether this type is equivalent to
* another type of the same type.
*/
bool CPPSimpleType::
is_equal(const CPPDeclaration *other) const {
const CPPSimpleType *ot = ((CPPDeclaration *)other)->as_simple_type();
assert(ot != nullptr);
return _type == ot->_type && _flags == ot->_flags;
}
/**
* Called by CPPDeclaration() to determine whether this type should be ordered
* before another type of the same type, in an arbitrary but fixed ordering.
*/
bool CPPSimpleType::
is_less(const CPPDeclaration *other) const {
const CPPSimpleType *ot = ((CPPDeclaration *)other)->as_simple_type();
assert(ot != nullptr);
if (_type != ot->_type) {
return _type < ot->_type;
}
return _flags < ot->_flags;
}