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cppTBDType.cxx
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175 lines (149 loc) · 4.01 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 cppTBDType.cxx
* @author drose
* @date 1999-11-05
*/
#include "cppTBDType.h"
#include "cppIdentifier.h"
#include "cppSimpleType.h"
/**
*
*/
CPPTBDType::
CPPTBDType(CPPIdentifier *ident) :
CPPType(CPPFile()),
_ident(ident)
{
_subst_decl_recursive_protect = false;
}
/**
* 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 *CPPTBDType::
resolve_type(CPPScope *current_scope, CPPScope *global_scope) {
CPPType *type = _ident->find_type(current_scope, global_scope);
if (type != nullptr) {
return type;
}
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 CPPTBDType::
is_tbd() const {
return true;
}
/**
* Returns a fundametal one-word name for the type. This name will not
* include any scoping operators or template parameters, so it may not be a
* compilable reference to the type.
*/
std::string CPPTBDType::
get_simple_name() const {
return _ident->get_simple_name();
}
/**
* Returns the compilable, correct name for this type within the indicated
* scope. If the scope is NULL, within the scope the type is declared in.
*/
std::string CPPTBDType::
get_local_name(CPPScope *scope) const {
return _ident->get_local_name(scope);
}
/**
* Returns the compilable, correct name for the type, with completely explicit
* scoping.
*/
std::string CPPTBDType::
get_fully_scoped_name() const {
return _ident->get_fully_scoped_name();
}
/**
*
*/
CPPDeclaration *CPPTBDType::
substitute_decl(CPPDeclaration::SubstDecl &subst,
CPPScope *current_scope, CPPScope *global_scope) {
CPPDeclaration *top =
CPPDeclaration::substitute_decl(subst, current_scope, global_scope);
if (top != this) {
return top;
}
// Protect against recursive entry into this function block. I know it's
// ugly--have you got any better suggestions?
if (_subst_decl_recursive_protect) {
// We're already executing this block.
return this;
}
_subst_decl_recursive_protect = true;
CPPTBDType *rep = new CPPTBDType(*this);
rep->_ident = _ident->substitute_decl(subst, current_scope, global_scope);
if (rep->_ident == _ident) {
delete rep;
rep = this;
}
rep = CPPType::new_type(rep)->as_tbd_type();
assert(rep != nullptr);
CPPType *result = rep;
// Can we now define it as a real type?
CPPType *type = rep->_ident->find_type(current_scope, global_scope, subst);
if (type != nullptr) {
result = type;
}
subst.insert(SubstDecl::value_type(this, result));
_subst_decl_recursive_protect = false;
return result;
}
/**
*
*/
void CPPTBDType::
output(std::ostream &out, int, CPPScope *, bool) const {
out /* << "typename " */ << *_ident;
}
/**
*
*/
CPPDeclaration::SubType CPPTBDType::
get_subtype() const {
return ST_tbd;
}
/**
*
*/
CPPTBDType *CPPTBDType::
as_tbd_type() {
return this;
}
/**
* Called by CPPDeclaration() to determine whether this type is equivalent to
* another type of the same type.
*/
bool CPPTBDType::
is_equal(const CPPDeclaration *other) const {
const CPPTBDType *ot = ((CPPDeclaration *)other)->as_tbd_type();
assert(ot != nullptr);
return (*_ident) == (*ot->_ident);
}
/**
* 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 CPPTBDType::
is_less(const CPPDeclaration *other) const {
const CPPTBDType *ot = ((CPPDeclaration *)other)->as_tbd_type();
assert(ot != nullptr);
return (*_ident) < (*ot->_ident);
}