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mi::neuraylib::IFunction_call Class Referenceabstract

This interface represents a function call. More...

#include <ifunction_call.h>

Inheritance diagram for mi::neuraylib::IFunction_call:

Public Member Functions

virtual const char * get_function_definition () const =0
 Returns the DB name of the corresponding function definition. More...
 
virtual const char * get_mdl_function_definition () const =0
 Returns the MDL name of the corresponding function definition. More...
 
virtual bool is_declarative () const =0
 Indicates whether the corresponding function definition is declarative. More...
 
virtual bool is_material () const =0
 Indicates whether the call represents a material instance. More...
 
bool is_array_constructor () const
 Indicates whether this call is an instance of the array constructor. More...
 
virtual const ITypeget_return_type () const =0
 Returns the return type of the corresponding function definition. More...
 
virtual Size get_parameter_count () const =0
 Returns the number of parameters. More...
 
virtual const char * get_parameter_name (Size index) const =0
 Returns the name of the parameter at index. More...
 
virtual Size get_parameter_index (const char *name) const =0
 Returns the index position of a parameter. More...
 
virtual const IType_listget_parameter_types () const =0
 Returns the types of all parameters. More...
 
virtual const IExpression_listget_arguments () const =0
 Returns all arguments. More...
 
virtual Sint32 set_arguments (const IExpression_list *arguments)=0
 Sets multiple arguments. More...
 
virtual Sint32 set_argument (Size index, const IExpression *argument)=0
 Sets the argument at index. More...
 
virtual Sint32 set_argument (const char *name, const IExpression *argument)=0
 Sets an argument identified by name. More...
 
virtual Sint32 reset_argument (Size index)=0
 Resets the argument at index. More...
 
virtual Sint32 reset_argument (const char *name)=0
 Resets an argument identified by name. More...
 
virtual bool is_default () const =0
 Indicates, if this function call acts as a default argument of a material or function definition. More...
 
virtual bool is_valid (IMdl_execution_context *context) const =0
 Returns true if this function call and all its arguments point to valid material and function definitions, false otherwise. More...
 
virtual Sint32 repair (Uint32 flags, IMdl_execution_context *context)=0
 Attempts to repair an invalid function call. More...
 
- Public Member Functions inherited from mi::neuraylib::IScene_element
virtual Element_type get_element_type () const =0
 Indicates the actual scene element represented by interfaces derived from this interface. More...
 
- Public Member Functions inherited from mi::neuraylib::IAttribute_set
virtual IDatacreate_attribute (const char *name, const char *type)=0
 Creates a new attribute name of the type type. More...
 
template<class T>
T * create_attribute (const char *name, const char *type)
 Creates a new attribute name of the type type. More...
 
template<class T>
T * create_attribute (const char *name)
 Creates a new attribute name of the type T. More...
 
virtual bool destroy_attribute (const char *name)=0
 Destroys the attribute name. More...
 
virtual const IDataaccess_attribute (const char *name) const =0
 Returns a const pointer to the attribute name. More...
 
template<class T>
const T * access_attribute (const char *name) const
 Returns a const pointer to the attribute name. More...
 
virtual IDataedit_attribute (const char *name)=0
 Returns a mutable pointer to the attribute name. More...
 
template<class T>
T * edit_attribute (const char *name)
 Returns a mutable pointer to the attribute name. More...
 
virtual bool is_attribute (const char *name) const =0
 Indicates existence of an attribute. More...
 
virtual const char * get_attribute_type_name (const char *name) const =0
 Returns the type of an attribute. More...
 
virtual Sint32 set_attribute_propagation (const char *name, Propagation_type value)=0
 Sets the propagation type of the attribute name. More...
 
virtual Propagation_type get_attribute_propagation (const char *name) const =0
 Returns the propagation type of the attribute name. More...
 
virtual const char * enumerate_attributes (Sint32 index) const =0
 Returns the name of the attribute indicated by index. More...
 
- Public Member Functions inherited from mi::base::IInterface
virtual Uint32 retain () const =0
 Increments the reference count. More...
 
virtual Uint32 release () const =0
 Decrements the reference count. More...
 
virtual const IInterfaceget_interface (const Uuid &interface_id) const =0
 Acquires a const interface from another. More...
 
template<class T>
const T * get_interface () const
 Acquires a const interface from another. More...
 
virtual IInterfaceget_interface (const Uuid &interface_id)=0
 Acquires a mutable interface from another. More...
 
template<class T>
T * get_interface ()
 Acquires a mutable interface from another. More...
 
virtual Uuid get_iid () const =0
 Returns the interface ID of the most derived interface. More...
 

Additional Inherited Members

- Public Types inherited from mi::base::Interface_declare< 0x67b29f5f, ... >
typedef Interface_declare< id1, ... > Self
 Own type. More...
 
typedef Uuid_t< id1, ... > IID
 Declares the interface ID (IID) of this interface. More...
 
- Public Types inherited from mi::base::Interface_declare< 0x8a2a4da9, ... >
typedef Interface_declare< id1, ... > Self
 Own type. More...
 
typedef Uuid_t< id1, ... > IID
 Declares the interface ID (IID) of this interface. More...
 
- Public Types inherited from mi::base::Interface_declare< 0x1bcb8d48, ... >
typedef Interface_declare< id1, ... > Self
 Own type. More...
 
typedef Uuid_t< id1, ... > IID
 Declares the interface ID (IID) of this interface. More...
 
- Public Types inherited from mi::base::IInterface
typedef Uuid_t<0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0> IID
 Declares the interface ID (IID) of this interface. More...
 
- Static Public Member Functions inherited from mi::base::Interface_declare< 0x67b29f5f, ... >
static bool compare_iid (const Uuid &iid)
 Compares the interface ID iid against the interface ID of this interface and of its ancestors. More...
 
- Static Public Member Functions inherited from mi::base::Interface_declare< 0x8a2a4da9, ... >
static bool compare_iid (const Uuid &iid)
 Compares the interface ID iid against the interface ID of this interface and of its ancestors. More...
 
- Static Public Member Functions inherited from mi::base::Interface_declare< 0x1bcb8d48, ... >
static bool compare_iid (const Uuid &iid)
 Compares the interface ID iid against the interface ID of this interface and of its ancestors. More...
 
- Static Public Member Functions inherited from mi::base::IInterface
static bool compare_iid (const Uuid &iid)
 Compares the interface ID iid against the interface ID of this interface. More...
 

Detailed Description

This interface represents a function call.

A function call is an instance of a formal function definition, with a fixed set of arguments (possibly the defaults of the function definition). Function calls can be created from function definitions using mi::neuraylib::IFunction_definition::create_function_call().

Note
This interface also supports material instances, which are considered as a special kind of function calls, namely function calls with the return type "material". The interface mi::neuraylib::IMaterial_instance should only be used to create compiled materials.
See also
mi::neuraylib::IFunction_definition, mi::neuraylib::Argument_editor

Member Function Documentation

 get_arguments()

virtual const IExpression_list * mi::neuraylib::IFunction_call::get_arguments ( ) const
pure virtual

Returns all arguments.

 get_function_definition()

virtual const char * mi::neuraylib::IFunction_call::get_function_definition ( ) const
pure virtual

Returns the DB name of the corresponding function definition.

The type of the function definition is mi::neuraylib::IFunction_definition.

Note
The DB name of the function definition is different from its MDL name (see get_mdl_function_definition()).

 get_mdl_function_definition()

virtual const char * mi::neuraylib::IFunction_call::get_mdl_function_definition ( ) const
pure virtual

Returns the MDL name of the corresponding function definition.

Note
The MDL name of the function definition is different from the name of the DB element (see get_function_definition()).

 get_parameter_count()

virtual Size mi::neuraylib::IFunction_call::get_parameter_count ( ) const
pure virtual

Returns the number of parameters.

 get_parameter_index()

virtual Size mi::neuraylib::IFunction_call::get_parameter_index ( const char *  name) const
pure virtual

Returns the index position of a parameter.

Parameters
nameThe name of the parameter.
Returns
The index of the parameter, or -1 if name is invalid.

 get_parameter_name()

virtual const char * mi::neuraylib::IFunction_call::get_parameter_name ( Size  index) const
pure virtual

Returns the name of the parameter at index.

Parameters
indexThe index of the parameter.
Returns
The name of the parameter, or NULL if index is out of range.

 get_parameter_types()

virtual const IType_list * mi::neuraylib::IFunction_call::get_parameter_types ( ) const
pure virtual

Returns the types of all parameters.

 get_return_type()

virtual const IType * mi::neuraylib::IFunction_call::get_return_type ( ) const
pure virtual

Returns the return type of the corresponding function definition.

 is_array_constructor()

bool mi::neuraylib::IFunction_call::is_array_constructor ( ) const
inline

Indicates whether this call is an instance of the array constructor.

See also
Arrays

 is_declarative()

virtual bool mi::neuraylib::IFunction_call::is_declarative ( ) const
pure virtual

Indicates whether the corresponding function definition is declarative.

Note
This includes, in addition to functions definitions that are explicitly marked as declarative, also function definitions that have been analyzed by the MDL compiler

 is_default()

virtual bool mi::neuraylib::IFunction_call::is_default ( ) const
pure virtual

Indicates, if this function call acts as a default argument of a material or function definition.

Defaults are immutable, their arguments cannot be changed and they cannot be used in call expressions.

Returns
true, if this function call is a default, false otherwise.

 is_material()

virtual bool mi::neuraylib::IFunction_call::is_material ( ) const
pure virtual

Indicates whether the call represents a material instance.

This value might differ from the result of mi::neuraylib::IFunction_definition::is_material() in case of the Template-like function definitions .

 is_valid()

virtual bool mi::neuraylib::IFunction_call::is_valid ( IMdl_execution_context context) const
pure virtual

Returns true if this function call and all its arguments point to valid material and function definitions, false otherwise.

Material and function definitions can become invalid due to a module reload.

See also
mi::neuraylib::IModule::reload(), mi::neuraylib::IFunction_call::repair()
Parameters
contextExecution context that can be queried for error messages after the operation has finished. Can be NULL.
Returns
  • true: The instance is valid.
  • false: The instance is invalid.

 repair()

virtual Sint32 mi::neuraylib::IFunction_call::repair ( Uint32  flags,
IMdl_execution_context context 
)
pure virtual

Attempts to repair an invalid function call.

Parameters
flagsRepair options, see mi::neuraylib::Mdl_repair_options.
contextExecution context that can be queried for error messages after the operation has finished. Can be NULL.
Returns
  • 0: Success.
  • -1: Repair failed. Check the context for details.

 reset_argument() [1/2]

virtual Sint32 mi::neuraylib::IFunction_call::reset_argument ( const char *  name)
pure virtual

Resets an argument identified by name.

If the function definition has a default for this parameter (and it does not violate a potential uniform requirement), then a clone of it is used as new argument. Otherwise, a constant expression is created, observing range annotations if present (see the overload of mi::neuraylib::IValue_factory::create() with two arguments).

Parameters
nameThe name of the parameter.
Returns
  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: Parameter name does not exist.
  • -4: The function call is immutable (because it appears in a default of a function or material definition).
  • -9: The function call is not valid (see is_valid()).

 reset_argument() [2/2]

virtual Sint32 mi::neuraylib::IFunction_call::reset_argument ( Size  index)
pure virtual

Resets the argument at index.

If the function definition has a default for this parameter (and it does not violate a potential uniform requirement), then a clone of it is used as new argument. Otherwise, a constant expression is created, observing range annotations if present (see the overload of mi::neuraylib::IValue_factory::create() with two arguments).

Parameters
indexThe index of the argument.
Returns
  • 0: Success.
  • -2: Parameter index does not exist.
  • -4: The function call is immutable (because it appears in a default of a function or material definition).
  • -9: The function call is not valid (see is_valid()).

 set_argument() [1/2]

virtual Sint32 mi::neuraylib::IFunction_call::set_argument ( const char *  name,
const IExpression argument 
)
pure virtual

Sets an argument identified by name.

This index-based overload set_argument(const char*,const IExpression*) is faster than this name-based overload and should be preferred if the index is known.

Parameters
nameThe name of the parameter.
argumentThe argument. Note that the expression is copied. This copy operation is a shallow copy, e.g., DB elements referenced in call expressions are not copied. The exception are (immutable) defaults, for which a deep copy is performed.
Returns
  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: Parameter name does not exist.
  • -3: The argument type does not match the parameter type.
  • -4: The function call is immutable (because it appears in a default of a function or material definition).
  • -5: The parameter type is uniform, but the argument type is varying.
  • -6: The argument expression is not a constant nor a call.
  • -7: The argument contains references to DB elements in a scope that is more private scope than the scope of this material instance.
  • -8: The parameter types is uniform, but the argument is a call expression and the return type of the called function definition is effectively varying since the function definition itself is varying.
  • -10: The definition is non-declarative, but the argument is a declarative call.

 set_argument() [2/2]

virtual Sint32 mi::neuraylib::IFunction_call::set_argument ( Size  index,
const IExpression argument 
)
pure virtual

Sets the argument at index.

This index-based overload is faster than the name-based overload set_argument(const char*,const IExpression*) and should be preferred if the index is known.

Parameters
indexThe index of the argument.
argumentThe argument. Note that the expression is copied. This copy operation is a shallow copy, e.g., DB elements referenced in call expressions are not copied. The exception are (immutable) defaults, for which a deep copy is performed.
Returns
  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: Parameter index does not exist.
  • -3: The argument type does not match the parameter type.
  • -4: The function call is immutable (because it appears in a default of a function or material definition).
  • -5: The parameter type is uniform, but the argument type is varying.
  • -6: The argument expression is not a constant nor a call.
  • -7: The argument contains references to DB elements in a scope that is more private scope than the scope of this material instance.
  • -8: The parameter types is uniform, but the argument is a call expression and the return type of the called function definition is effectively varying since the function definition itself is varying.
  • -10: The definition is non-declarative, but the argument is a declarative call.

 set_arguments()

virtual Sint32 mi::neuraylib::IFunction_call::set_arguments ( const IExpression_list arguments)
pure virtual

Sets multiple arguments.

Parameters
argumentsThe arguments. Note that the expressions are copied. This copy operation is a shallow copy, e.g., DB elements referenced in call expressions are not copied. The exception are (immutable) defaults, for which a deep copy is performed.
Returns
  • 0: Success.
  • -1: Invalid parameters (NULL pointer).
  • -2: One of the parameters in arguments does not exist.
  • -3: One of the argument types does not match the corresponding parameter type.
  • -4: The function call is immutable (because it appears in a default of a function or material definition).
  • -5: One of the parameter types is uniform, but the corresponding argument type is varying.
  • -6: One of the arguments is not a constant nor a call.
  • -7: One of the arguments contains references to DB elements in a scope that is more private scope than the scope of this material instance.
  • -8: One of the parameter types is uniform, but the corresponding argument is a call expression and the return type of the called function definition is effectively varying since the function definition itself is varying.
  • -10: The definition is non-declarative, but at least one of the arguments is a declarative call.