neuray API Programmer's Manual

mi::IStructure_decl Class Reference

[Types]

Description

A structure declaration is used to describe structure types. It contains all the type information required for structure types: the number of fields, their names and types. In contrast to element of a map structure fields are ordered and do not need to be of the same type.

Structure declarations can be used to create new structure types. In this case, they are populated through a sequence of add_member() calls. Finally, such a declaration is registered via mi::neuraylib::IExtension_api::register_structure_decl(). The name used for registration can later be used as a type name to create instances of the type described by the declaration.

See also:

mi::IStructure, mi::IMap

mi::base::Interface_declare\< ... \>Mixin class template for deriving new interface declarations. The basic extensible interface.The basic extensible interface.

Public Member Functions

virtual Sint32 add_member( const char* type_name, const char* name) =0
Adds a new member to the structure declaration. More...
virtual Size get_length() const =0
Returns the number of structure members.
virtual const char* get_member_name( Size index) const =0
Returns the member name of a certain structure member. More...
virtual const char* get_member_type_name( Size index) const =0
Returns the type name of a certain structure member. More...
virtual const char* get_member_type_name( const char* name) const =0
Returns the type name of a certain structure member. More...
virtual const char* get_structure_type_name() const =0
Returns the type name used to register this structure declaration. More...
virtual Sint32 remove_member( const char* name) =0
Removes a member from the structure declaration. More...

Member Functions

virtual Sint32 mi::​IStructure_decl::add_member( const char* type_name, const char* name) [pure virtual]

Adds a new member to the structure declaration.

Parameters

type_name
The type name of the new member, see Types for valid type names. Note that this method does not check the type name for validity (since validity at the time of this method call does not imply validity at the time of instantiation).
name
The name of the new member.

Returns

  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: There is already a member with name name.
virtual Size mi::​IStructure_decl::get_length() const [pure virtual]

Returns the number of structure members.

virtual const char* mi::​IStructure_decl::get_member_name( Size index) const [pure virtual]

Returns the member name of a certain structure member.

Parameters

index
The index of the requested structure member.

Returns

The member name of that structure member, or NULL if index is out of bounds.

virtual const char* mi::​IStructure_decl::get_member_type_name( Size index) const [pure virtual]

Returns the type name of a certain structure member.

Parameters

index
The index of the requested structure member.

Returns

The type name of that structure member, or NULL if index is out of bounds.

virtual const char* mi::​IStructure_decl::get_member_type_name( const char* name) const [pure virtual]

Returns the type name of a certain structure member.

Parameters

name
The name of the requested structure member.

Returns

The type name of that structure member, or NULL if there is no structure member with name name .

virtual const char* mi::​IStructure_decl::get_structure_type_name() const [pure virtual]

Returns the type name used to register this structure declaration. Note that the type name will only be available after registration, i.e., if the declaration has been obtained from mi::IStructure::get_structure_decl() or mi::neuraylib::IFactory::get_structure_decl().

The type name might start with '{' which indicates that it has been automatically generated. In this case the type name should be treated as an opaque string since its format might change unexpectedly. It is perfectly fine to pass it to other methods, e.g., mi::neuraylib::IFactory::create(), but you should not attempt to interpret the value in any way. Use the methods on this interface to obtain information about the type itself.

Returns

The type name under which this structure declaration was registered, or NULL in case of failure.

virtual Sint32 mi::​IStructure_decl::remove_member( const char* name) [pure virtual]

Removes a member from the structure declaration.

Parameters

name
The name of the member to remove.

Returns

  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: There is no member with name name.