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cppArrayType.cxx
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256 lines (227 loc) · 6.46 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 cppArrayType.cxx
* @author drose
* @date 1999-10-19
*/
#include "cppArrayType.h"
#include "cppExpression.h"
#include "cppPointerType.h"
/**
*
*/
CPPArrayType::
CPPArrayType(CPPType *element_type, CPPExpression *bounds) :
CPPType(CPPFile()),
_element_type(element_type),
_bounds(bounds)
{
}
/**
* Returns true if this declaration is an actual, factual declaration, or
* false if some part of the declaration depends on a template parameter which
* has not yet been instantiated.
*/
bool CPPArrayType::
is_fully_specified() const {
return CPPType::is_fully_specified() &&
_element_type->is_fully_specified();
}
/**
* If this CPPType object is a forward reference or other nonspecified
* reference to a type that might now be known a real type, returns the real
* type. Otherwise returns the type itself.
*/
CPPType *CPPArrayType::
resolve_type(CPPScope *current_scope, CPPScope *global_scope) {
CPPType *ptype = _element_type->resolve_type(current_scope, global_scope);
if (ptype != _element_type) {
CPPArrayType *rep = new CPPArrayType(*this);
rep->_element_type = ptype;
return CPPType::new_type(rep);
}
return this;
}
/**
* 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 CPPArrayType::
is_tbd() const {
return _element_type->is_tbd();
}
/**
* Returns true if the type is considered a standard layout type.
*/
bool CPPArrayType::
is_standard_layout() const {
return _element_type->is_standard_layout();
}
/**
* Returns true if the type is considered a Plain Old Data (POD) type.
*/
bool CPPArrayType::
is_trivial() const {
return _element_type->is_trivial();
}
/**
* Returns true if the type is default-constructible.
*/
bool CPPArrayType::
is_default_constructible() const {
return _bounds != nullptr && _element_type->is_default_constructible();
}
/**
* Returns true if the type is copy-constructible.
*/
bool CPPArrayType::
is_copy_constructible() const {
// This is technically not exactly true, but array data members do not
// prevent C++ implicit copy constructor generation rules, so we need to
// return true here.
// If this is a problem, we will need to create a separate method for the
// purpose of checking copyability as a data member.
return true;
}
/**
* Returns true if the type is copy-assignable.
*/
bool CPPArrayType::
is_copy_assignable() const {
// Same story as is_copy_constructible.
return true;
}
/**
* This is a little more forgiving than is_equal(): it returns true if the
* types appear to be referring to the same thing, even if they may have
* different pointers or somewhat different definitions. It's useful for
* parameter matching, etc.
*/
bool CPPArrayType::
is_equivalent(const CPPType &other) const {
const CPPArrayType *ot = ((CPPType *)&other)->as_array_type();
if (ot == nullptr) {
return CPPType::is_equivalent(other);
}
return _element_type->is_equivalent(*ot->_element_type);
}
/**
*
*/
CPPDeclaration *CPPArrayType::
substitute_decl(CPPDeclaration::SubstDecl &subst,
CPPScope *current_scope, CPPScope *global_scope) {
SubstDecl::const_iterator si = subst.find(this);
if (si != subst.end()) {
return (*si).second;
}
CPPArrayType *rep = new CPPArrayType(*this);
rep->_element_type =
_element_type->substitute_decl(subst, current_scope, global_scope)
->as_type();
if (_bounds != nullptr) {
rep->_bounds =
_bounds->substitute_decl(subst, current_scope, global_scope)
->as_expression();
}
if (rep->_element_type == _element_type &&
rep->_bounds == _bounds) {
delete rep;
rep = this;
}
rep = CPPType::new_type(rep)->as_array_type();
subst.insert(SubstDecl::value_type(this, rep));
return rep;
}
/**
*
*/
void CPPArrayType::
output(std::ostream &out, int indent_level, CPPScope *scope, bool complete) const {
/*
_element_type->output(out, indent_level, scope, complete);
out << "[";
if (_bounds != NULL) {
out << *_bounds;
}
out << "]";
*/
output_instance(out, indent_level, scope, complete, "", "");
}
/**
* Formats a C++-looking line that defines an instance of the given type, with
* the indicated name. In most cases this will be "type name", but some types
* have special exceptions.
*/
void CPPArrayType::
output_instance(std::ostream &out, int indent_level, CPPScope *scope,
bool complete, const std::string &prename,
const std::string &name) const {
std::ostringstream brackets;
brackets << "[";
if (_bounds != nullptr) {
brackets << *_bounds;
}
brackets << "]";
std::string bracketsstr = brackets.str();
_element_type->output_instance(out, indent_level, scope, complete,
prename, name + bracketsstr);
}
/**
*
*/
CPPDeclaration::SubType CPPArrayType::
get_subtype() const {
return ST_array;
}
/**
*
*/
CPPArrayType *CPPArrayType::
as_array_type() {
return this;
}
/**
* Called by CPPDeclaration() to determine whether this type is equivalent to
* another type of the same type.
*/
bool CPPArrayType::
is_equal(const CPPDeclaration *other) const {
const CPPArrayType *ot = ((CPPDeclaration *)other)->as_array_type();
assert(ot != nullptr);
if (_bounds != nullptr && ot->_bounds != nullptr) {
if (*_bounds != *ot->_bounds) {
return false;
}
} else if ((_bounds == nullptr) != (ot->_bounds == nullptr)) {
return false;
}
return *_element_type == *ot->_element_type;
}
/**
* 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 CPPArrayType::
is_less(const CPPDeclaration *other) const {
const CPPArrayType *ot = ((CPPDeclaration *)other)->as_array_type();
assert(ot != nullptr);
if (_bounds != nullptr && ot->_bounds != nullptr) {
if (*_bounds != *ot->_bounds) {
return *_bounds < *ot->_bounds;
}
} else if ((_bounds == nullptr) != (ot->_bounds == nullptr)) {
return _bounds < ot->_bounds;
}
if (*_element_type != *ot->_element_type) {
return *_element_type < *ot->_element_type;
}
return false;
}