Panda3D
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The TypeRegistry class maintains all the assigned TypeHandles in a given system. More...
#include <pandadoc.hpp>
Public Member Functions | |
__init__ (const TypeRegistry) | |
TypeHandle | findType (str name) |
Looks for a previously-registered type of the given name. | |
TypeHandle | findTypeById (int id) |
Looks for a previously-registered type with the given id number (as returned by TypeHandle::get_index()). | |
TypeHandle | getChildClass (TypeHandle child, int index) |
Returns the nth child class of this type. | |
str | getName (TypeHandle type, TypedObject object) |
Returns the name of the indicated type. | |
int | getNumChildClasses (TypeHandle child, TypedObject child_object) |
Returns the number of child classes that the indicated type is known to have. | |
int | getNumParentClasses (TypeHandle child, TypedObject child_object) |
Returns the number of parent classes that the indicated type is known to have. | |
int | getNumRootClasses () |
Returns the number of root classes–that is, classes that do not inherit from any other classes–known in the system. | |
int | getNumTypehandles () |
Returns the total number of unique TypeHandles in the system. | |
TypeHandle | getParentClass (TypeHandle child, int index) |
Returns the nth parent class of this type. | |
TypeHandle | getParentTowards (TypeHandle child, TypeHandle base, TypedObject child_object) |
Returns the parent of the indicated child class that is in a direct line of inheritance to the indicated ancestor class. | |
TypeHandle | getRootClass (int n) |
Returns the nth root class in the system. | |
list | getRootClasses () |
TypeHandle | getTypehandle (int n) |
Returns the nth TypeHandle in the system. | |
list | getTypehandles () |
bool | isDerivedFrom (TypeHandle child, TypeHandle base, TypedObject child_object) |
Returns true if the first type is derived from the second type, false otherwise. | |
recordAlternateName (TypeHandle type, str name) | |
Indicates an alternate name for the same type. | |
recordDerivation (TypeHandle child, TypeHandle parent) | |
Records that the type referenced by child inherits directly from the type referenced by parent. | |
recordPythonType (TypeHandle type, object python_type) | |
Records the given Python type pointer in the type registry for the benefit of interrogate, which expects this to contain a Dtool_PyTypedObject. | |
TypeHandle | registerDynamicType (str name) |
Registers a new type on-the-fly, presumably at runtime. | |
write (Ostream out) | |
Makes an attempt to format the entire TypeRegistry in a nice way that shows the derivation tree as intelligently as possible. | |
Static Public Member Functions | |
static TypeRegistry | ptr () |
Returns the pointer to the global TypeRegistry object. | |
static | reregisterTypes () |
Walks through the TypeRegistry tree and makes sure that each type that was previously registered is still registered. | |
Public Attributes | |
TypeHandle | root_classes [] |
Returns the nth root class in the system. | |
TypeHandle | typehandles [] |
Returns the nth TypeHandle in the system. | |
The TypeRegistry class maintains all the assigned TypeHandles in a given system.
There should be only one TypeRegistry class during the lifetime of the application. It will be created on the local heap initially, and it should be migrated to shared memory as soon as shared memory becomes available.
__init__ | ( | const TypeRegistry | ) |
TypeHandle findType | ( | str | name | ) |
Looks for a previously-registered type of the given name.
Returns its TypeHandle if it exists, or TypeHandle::none() if there is no such type.
TypeHandle findTypeById | ( | int | id | ) |
Looks for a previously-registered type with the given id number (as returned by TypeHandle::get_index()).
Returns its TypeHandle if it exists, or TypeHandle::none() if there is no such type.
TypeHandle getChildClass | ( | TypeHandle | child, |
int | index ) |
Returns the nth child class of this type.
The index should be in the range 0 <= index < get_num_child_classes().
str getName | ( | TypeHandle | type, |
TypedObject | object ) |
Returns the name of the indicated type.
The "object" pointer is an optional pointer to the TypedObject class that owns this TypeHandle. It is only used in case the TypeHandle is inadvertantly undefined.
int getNumChildClasses | ( | TypeHandle | child, |
TypedObject | child_object ) |
Returns the number of child classes that the indicated type is known to have.
This may then be used to index into get_child_class().
The "object" pointer is an optional pointer to the TypedObject class that owns this TypeHandle. It is only used in case the TypeHandle is inadvertantly undefined.
int getNumParentClasses | ( | TypeHandle | child, |
TypedObject | child_object ) |
Returns the number of parent classes that the indicated type is known to have.
This may then be used to index into get_parent_class(). The result will be 0 if this class does not inherit from any other classes, 1 if normal, single inheritance is in effect, or greater than one if multiple inheritance is in effect.
The "object" pointer is an optional pointer to the TypedObject class that owns this TypeHandle. It is only used in case the TypeHandle is inadvertantly undefined.
int getNumRootClasses | ( | ) |
Returns the number of root classes–that is, classes that do not inherit from any other classes–known in the system.
int getNumTypehandles | ( | ) |
Returns the total number of unique TypeHandles in the system.
TypeHandle getParentClass | ( | TypeHandle | child, |
int | index ) |
Returns the nth parent class of this type.
The index should be in the range 0 <= index < get_num_parent_classes().
TypeHandle getParentTowards | ( | TypeHandle | child, |
TypeHandle | base, | ||
TypedObject | child_object ) |
Returns the parent of the indicated child class that is in a direct line of inheritance to the indicated ancestor class.
This is useful in the presence of multiple inheritance to try to determine what properties an unknown type may have.
The "object" pointer is an optional pointer to the TypedObject class that owns this TypeHandle. It is only used in case the TypeHandle is inadvertantly undefined.
TypeHandle getRootClass | ( | int | n | ) |
Returns the nth root class in the system.
See get_num_root_classes().
list getRootClasses | ( | ) |
TypeHandle getTypehandle | ( | int | n | ) |
Returns the nth TypeHandle in the system.
See get_num_typehandles().
list getTypehandles | ( | ) |
bool isDerivedFrom | ( | TypeHandle | child, |
TypeHandle | base, | ||
TypedObject | child_object ) |
Returns true if the first type is derived from the second type, false otherwise.
The "child_object" pointer is an optional pointer to the TypedObject class that owns the child TypeHandle. It is only used in case the TypeHandle is inadvertently undefined.
This function definition follows the definitions for look_up() and freshen_derivations() just to maximize the chance the the compiler will be able to inline the above functions. Yeah, a compiler shouldn't care, but there's a big different between "shouldn't" and "doesn't".
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static |
Returns the pointer to the global TypeRegistry object.
recordAlternateName | ( | TypeHandle | type, |
str | name ) |
Indicates an alternate name for the same type.
This is particularly useful when a type has changed names, since the type is stored in a Bam file by name; setting the original name as the alternate will allow the type to be correctly read from old Bam files.
recordDerivation | ( | TypeHandle | child, |
TypeHandle | parent ) |
Records that the type referenced by child inherits directly from the type referenced by parent.
In the event of multiple inheritance, this should be called once for each parent class.
recordPythonType | ( | TypeHandle | type, |
object | python_type ) |
Records the given Python type pointer in the type registry for the benefit of interrogate, which expects this to contain a Dtool_PyTypedObject.
TypeHandle registerDynamicType | ( | str | name | ) |
Registers a new type on-the-fly, presumably at runtime.
A new TypeHandle is returned if the typename was not seen before; otherwise the same TypeHandle that was last used for this typename is returned.
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static |
Walks through the TypeRegistry tree and makes sure that each type that was previously registered is still registered.
This seems to get broken in certain circumstances when compiled against libc5–it is as if the static initializer stomps on the _type_handle values of each class after they've been registered.
write | ( | Ostream | out | ) |
Makes an attempt to format the entire TypeRegistry in a nice way that shows the derivation tree as intelligently as possible.
TypeHandle root_classes[] |
Returns the nth root class in the system.
See get_num_root_classes().
TypeHandle typehandles[] |
Returns the nth TypeHandle in the system.
See get_num_typehandles().