Notation used in Ruby API documentation
Module: db
Description: Circuits are the basic building blocks of the netlist
Class hierarchy: Circuit » NetlistObject
A circuit has pins by which it can connect to the outside. Pins are created using create_pin and are represented by the Pin class.
Furthermore, a circuit manages the components of the netlist. Components are devices (class Device) and subcircuits (class SubCircuit). Devices are basic devices such as resistors or transistors. Subcircuits are other circuits to which nets from this circuit connect. Devices are created using the create_device method. Subcircuits are created using the create_subcircuit method.
Devices are connected through 'terminals', subcircuits are connected through their pins. Terminals and pins are described by integer ID's in the context of most methods.
Finally, the circuit consists of the nets. Nets connect terminals of devices and pins of subcircuits or the circuit itself. Nets are created using create_net and are represented by objects of the Net class. See there for more about nets.
The Circuit object is only valid if the netlist object is alive. Circuits must be added to a netlist using Netlist#add to become part of the netlist.
The Circuit class has been introduced in version 0.26.
| void | _assign | (const Circuit other) | Assigns another object to self | |
| [const] | Circuit ptr | _const_cast | Returns a non-const reference to self. | |
| void | _create | Ensures the C++ object is created | ||
| void | _destroy | Explicitly destroys the object | ||
| [const] | bool | _destroyed? | Returns a value indicating whether the object was already destroyed | |
| [const] | new Circuit ptr | _dup | Creates a copy of self | |
| [const] | bool | _is_const_object? | Returns a value indicating whether the reference is a const reference | |
| void | _manage | Marks the object as managed by the script side. | ||
| void | _unmanage | Marks the object as no longer owned by the script side. | ||
| void | blank | Blanks out the circuit | ||
| [const] | DPolygon | boundary | Gets the boundary of the circuit | |
| void | boundary= | (const DPolygon boundary) | Sets the boundary of the circuit | |
| [const] | unsigned int | cell_index | Gets the cell index of the circuit | |
| void | cell_index= | (unsigned int cell_index) | Sets the cell index | |
| void | clear | Clears the circuit | ||
| void | combine_devices | Combines devices where possible | ||
| void | connect_pin | (unsigned long pin_id, Net ptr net) | Connects the given pin with the given net. | |
| void | connect_pin | (const Pin ptr pin, Net ptr net) | Connects the given pin with the given net. | |
| Device ptr | create_device | (DeviceClass ptr device_class, string name = ) | Creates a new bound Device object inside the circuit | |
| Net ptr | create_net | (string name = ) | Creates a new Net object inside the circuit | |
| Pin ptr | create_pin | (string name) | Creates a new Pin object inside the circuit | |
| SubCircuit ptr | create_subcircuit | (Circuit ptr circuit, string name = ) | Creates a new bound SubCircuit object inside the circuit | |
| Device ptr | device_by_id | (unsigned long id) | Gets the device object for a given ID. | |
| [const] | const Device ptr | device_by_id | (unsigned long id) | Gets the device object for a given ID (const version). |
| Device ptr | device_by_name | (string name) | Gets the device object for a given name. | |
| [const] | const Device ptr | device_by_name | (string name) | Gets the device object for a given name (const version). |
| void | disconnect_pin | (unsigned long pin_id) | Disconnects the given pin from any net. | |
| void | disconnect_pin | (const Pin ptr pin) | Disconnects the given pin from any net. | |
| [const] | bool | dont_purge | Gets a value indicating whether the circuit can be purged on Netlist#purge. | |
| void | dont_purge= | (bool f) | Sets a value indicating whether the circuit can be purged on Netlist#purge. | |
| [iter] | Circuit | each_child | Iterates over the child circuits of this circuit | |
| [const,iter] | Circuit | each_child | Iterates over the child circuits of this circuit (const version) | |
| [iter] | Device | each_device | Iterates over the devices of the circuit | |
| [const,iter] | Device | each_device | Iterates over the devices of the circuit (const version) | |
| [iter] | Net | each_net | Iterates over the nets of the circuit | |
| [const,iter] | Net | each_net | Iterates over the nets of the circuit (const version) | |
| [iter] | Circuit | each_parent | Iterates over the parent circuits of this circuit | |
| [const,iter] | Circuit | each_parent | Iterates over the parent circuits of this circuit (const version) | |
| [iter] | Pin | each_pin | Iterates over the pins of the circuit | |
| [const,iter] | Pin | each_pin | Iterates over the pins of the circuit (const version) | |
| [iter] | SubCircuit | each_ref | Iterates over the subcircuit objects referencing this circuit | |
| [const,iter] | SubCircuit | each_ref | Iterates over the subcircuit objects referencing this circuit (const version) | |
| [iter] | SubCircuit | each_subcircuit | Iterates over the subcircuits of the circuit | |
| [const,iter] | SubCircuit | each_subcircuit | Iterates over the subcircuits of the circuit (const version) | |
| void | flatten_subcircuit | (SubCircuit ptr subcircuit) | Flattens a subcircuit | |
| [const] | bool | has_refs? | Returns a value indicating whether the circuit has references | |
| void | join_nets | (Net ptr net, Net ptr with) | Joins (connects) two nets into one | |
| [const] | string | name | Gets the name of the circuit | |
| void | name= | (string name) | Sets the name of the circuit | |
| Net ptr | net_by_cluster_id | (unsigned long cluster_id) | Gets the net object corresponding to a specific cluster ID | |
| Net ptr | net_by_name | (string name) | Gets the net object for a given name. | |
| [const] | const Net ptr | net_by_name | (string name) | Gets the net object for a given name (const version). |
| Net ptr | net_for_pin | (unsigned long pin_id) | Gets the net object attached to a specific pin. | |
| [const] | const Net ptr | net_for_pin | (unsigned long pin_id) | Gets the net object attached to a specific pin (const version). |
| Net ptr | net_for_pin | (const Pin ptr pin) | Gets the net object attached to a specific pin. | |
| [const] | const Net ptr | net_for_pin | (const Pin ptr pin) | Gets the net object attached to a specific pin (const version). |
| Netlist ptr | netlist | Gets the netlist object the circuit lives in | ||
| [const] | const Netlist ptr | netlist | Gets the netlist object the circuit lives in (const version) | |
| Net ptr[] | nets_by_name | (string name_pattern) | Gets the net objects for a given name filter. | |
| [const] | const Net ptr[] | nets_by_name | (string name_pattern) | Gets the net objects for a given name filter (const version). |
| Pin ptr | pin_by_id | (unsigned long id) | Gets the Pin object corresponding to a specific ID | |
| [const] | const Pin ptr | pin_by_id | (unsigned long id) | Gets the Pin object corresponding to a specific ID (const version) |
| Pin ptr | pin_by_name | (string name) | Gets the Pin object corresponding to a specific name | |
| [const] | const Pin ptr | pin_by_name | (string name) | Gets the Pin object corresponding to a specific name (const version) |
| [const] | unsigned long | pin_count | Gets the number of pins in the circuit | |
| void | purge_devices | Purges invalid devices. | ||
| void | purge_nets | Purges floating nets. | ||
| void | purge_nets_keep_pins | Purges floating nets but keep pins. | ||
| void | remove_device | (Device ptr device) | Removes the given device from the circuit | |
| void | remove_net | (Net ptr net) | Removes the given net from the circuit | |
| void | remove_pin | (unsigned long id) | Removes the pin with the given ID from the circuit | |
| void | remove_subcircuit | (SubCircuit ptr subcircuit) | Removes the given subcircuit from the circuit | |
| void | rename_pin | (unsigned long id, string new_name) | Renames the pin with the given ID to 'new_name' | |
| SubCircuit ptr | subcircuit_by_id | (unsigned long id) | Gets the subcircuit object for a given ID. | |
| [const] | const SubCircuit ptr | subcircuit_by_id | (unsigned long id) | Gets the subcircuit object for a given ID (const version). |
| SubCircuit ptr | subcircuit_by_name | (string name) | Gets the subcircuit object for a given name. | |
| [const] | const SubCircuit ptr | subcircuit_by_name | (string name) | Gets the subcircuit object for a given name (const version). |
_assign | Signature: void _assign (const Circuit other) Description: Assigns another object to self |
_const_cast | Signature: [const] Circuit ptr _const_cast Description: Returns a non-const reference to self. Basically, this method allows turning a const object reference to a non-const one. This method is provided as last resort to remove the constness from an object. Usually there is a good reason for a const object reference, so using this method may have undesired side effects. This method has been introduced in version 0.29.6. |
_create | Signature: void _create Description: Ensures the C++ object is created Use this method to ensure the C++ object is created, for example to ensure that resources are allocated. Usually C++ objects are created on demand and not necessarily when the script object is created. |
_destroy | Signature: void _destroy Description: Explicitly destroys the object Explicitly destroys the object on C++ side if it was owned by the script interpreter. Subsequent access to this object will throw an exception. If the object is not owned by the script, this method will do nothing. |
_destroyed? | Signature: [const] bool _destroyed? Description: Returns a value indicating whether the object was already destroyed This method returns true, if the object was destroyed, either explicitly or by the C++ side. The latter may happen, if the object is owned by a C++ object which got destroyed itself. |
_dup | Signature: [const] new Circuit ptr _dup Description: Creates a copy of self |
_is_const_object? | Signature: [const] bool _is_const_object? Description: Returns a value indicating whether the reference is a const reference This method returns true, if self is a const reference. In that case, only const methods may be called on self. |
_manage | Signature: void _manage Description: Marks the object as managed by the script side. After calling this method on an object, the script side will be responsible for the management of the object. This method may be called if an object is returned from a C++ function and the object is known not to be owned by any C++ instance. If necessary, the script side may delete the object if the script's reference is no longer required. Usually it's not required to call this method. It has been introduced in version 0.24. |
_unmanage | Signature: void _unmanage Description: Marks the object as no longer owned by the script side. Calling this method will make this object no longer owned by the script's memory management. Instead, the object must be managed in some other way. Usually this method may be called if it is known that some C++ object holds and manages this object. Technically speaking, this method will turn the script's reference into a weak reference. After the script engine decides to delete the reference, the object itself will still exist. If the object is not managed otherwise, memory leaks will occur. Usually it's not required to call this method. It has been introduced in version 0.24. |
blank | Signature: void blank Description: Blanks out the circuit This method will remove all the innards of the circuit and just leave the pins. The pins won't be connected to inside nets anymore, but the circuit can still be called by subcircuit references. This method will eventually create a 'circuit abstract' (or black box). It will set the dont_purge flag to mark this circuit as 'intentionally empty'. |
boundary | Signature: [const] DPolygon boundary Description: Gets the boundary of the circuit Python specific notes: |
boundary= | Signature: void boundary= (const DPolygon boundary) Description: Sets the boundary of the circuit Python specific notes: |
cell_index | Signature: [const] unsigned int cell_index Description: Gets the cell index of the circuit See cell_index= for details. Python specific notes: |
cell_index= | Signature: void cell_index= (unsigned int cell_index) Description: Sets the cell index The cell index relates a circuit with a cell from a layout. It's intended to hold a cell index number if the netlist was extracted from a layout. Python specific notes: |
clear | Signature: void clear Description: Clears the circuit This method removes all objects and clears the other attributes. |
combine_devices | Signature: void combine_devices Description: Combines devices where possible This method will combine devices that can be combined according to their device classes 'combine_devices' method. For example, serial or parallel resistors can be combined into a single resistor. |
connect_pin | (1) Signature: void connect_pin (unsigned long pin_id, Net ptr net) Description: Connects the given pin with the given net. The net must be one inside the circuit. Any previous connected is resolved before this connection is made. A pin can only be connected to one net at a time. |
(2) Signature: void connect_pin (const Pin ptr pin, Net ptr net) Description: Connects the given pin with the given net. The net and the pin must be objects from inside the circuit. Any previous connected is resolved before this connection is made. A pin can only be connected to one net at a time. | |
create_device | Signature: Device ptr create_device (DeviceClass ptr device_class, string name = ) Description: Creates a new bound Device object inside the circuit This object describes a device of the circuit. The device is already attached to the device class. The name is optional and is used to identify the device in a netlist file. For more details see the Device class. |
create_net | Signature: Net ptr create_net (string name = ) Description: Creates a new Net object inside the circuit This object will describe a net of the circuit. The nets are basically connections between the different components of the circuit (subcircuits, devices and pins). A net needs to be filled with references to connect to specific objects. See the Net class for more details. |
create_pin | Signature: Pin ptr create_pin (string name) Description: Creates a new Pin object inside the circuit This object will describe a pin of the circuit. A circuit connects to the outside through such a pin. The pin is added after all existing pins. For more details see the Pin class. Starting with version 0.26.8, this method returns a reference to a Pin object rather than a copy. |
create_subcircuit | Signature: SubCircuit ptr create_subcircuit (Circuit ptr circuit, string name = ) Description: Creates a new bound SubCircuit object inside the circuit This object describes an instance of another circuit inside the circuit. The subcircuit is already attached to the other circuit. The name is optional and is used to identify the subcircuit in a netlist file. For more details see the SubCircuit class. |
device_by_id | (1) Signature: Device ptr device_by_id (unsigned long id) Description: Gets the device object for a given ID. If the ID is not a valid device ID, nil is returned. |
(2) Signature: [const] const Device ptr device_by_id (unsigned long id) Description: Gets the device object for a given ID (const version). If the ID is not a valid device ID, nil is returned. This constness variant has been introduced in version 0.26.8 | |
device_by_name | (1) Signature: Device ptr device_by_name (string name) Description: Gets the device object for a given name. If the ID is not a valid device name, nil is returned. |
(2) Signature: [const] const Device ptr device_by_name (string name) Description: Gets the device object for a given name (const version). If the ID is not a valid device name, nil is returned. This constness variant has been introduced in version 0.26.8 | |
disconnect_pin | (1) Signature: void disconnect_pin (unsigned long pin_id) Description: Disconnects the given pin from any net. |
(2) Signature: void disconnect_pin (const Pin ptr pin) Description: Disconnects the given pin from any net. | |
dont_purge | Signature: [const] bool dont_purge Description: Gets a value indicating whether the circuit can be purged on Netlist#purge. Python specific notes: |
dont_purge= | Signature: void dont_purge= (bool f) Description: Sets a value indicating whether the circuit can be purged on Netlist#purge. If this attribute is set to true, Netlist#purge will never delete this circuit. This flag therefore marks this circuit as 'precious'. Python specific notes: |
each_child | (1) Signature: [iter] Circuit each_child Description: Iterates over the child circuits of this circuit Child circuits are the ones that are referenced from this circuit via subcircuits. |
(2) Signature: [const,iter] Circuit each_child Description: Iterates over the child circuits of this circuit (const version) Child circuits are the ones that are referenced from this circuit via subcircuits. This constness variant has been introduced in version 0.26.8 | |
each_device | (1) Signature: [iter] Device each_device Description: Iterates over the devices of the circuit |
(2) Signature: [const,iter] Device each_device Description: Iterates over the devices of the circuit (const version) This constness variant has been introduced in version 0.26.8 | |
each_net | (1) Signature: [iter] Net each_net Description: Iterates over the nets of the circuit |
(2) Signature: [const,iter] Net each_net Description: Iterates over the nets of the circuit (const version) This constness variant has been introduced in version 0.26.8 | |
each_parent | (1) Signature: [iter] Circuit each_parent Description: Iterates over the parent circuits of this circuit Child circuits are the ones that are referencing this circuit via subcircuits. |
(2) Signature: [const,iter] Circuit each_parent Description: Iterates over the parent circuits of this circuit (const version) Child circuits are the ones that are referencing this circuit via subcircuits. This constness variant has been introduced in version 0.26.8 | |
each_pin | (1) Signature: [iter] Pin each_pin Description: Iterates over the pins of the circuit |
(2) Signature: [const,iter] Pin each_pin Description: Iterates over the pins of the circuit (const version) This constness variant has been introduced in version 0.26.8 | |
each_ref | (1) Signature: [iter] SubCircuit each_ref Description: Iterates over the subcircuit objects referencing this circuit |
(2) Signature: [const,iter] SubCircuit each_ref Description: Iterates over the subcircuit objects referencing this circuit (const version) This constness variant has been introduced in version 0.26.8 | |
each_subcircuit | (1) Signature: [iter] SubCircuit each_subcircuit Description: Iterates over the subcircuits of the circuit |
(2) Signature: [const,iter] SubCircuit each_subcircuit Description: Iterates over the subcircuits of the circuit (const version) This constness variant has been introduced in version 0.26.8 | |
flatten_subcircuit | Signature: void flatten_subcircuit (SubCircuit ptr subcircuit) Description: Flattens a subcircuit This method will substitute the given subcircuit by its contents. The subcircuit is removed after this. |
has_refs? | Signature: [const] bool has_refs? Description: Returns a value indicating whether the circuit has references A circuit has references if there is at least one subcircuit referring to it. |
join_nets | Signature: void join_nets (Net ptr net, Net ptr with) Description: Joins (connects) two nets into one This method will connect the 'with' net with 'net' and remove 'with'. This method has been introduced in version 0.26.4. Starting with version 0.28.13, net names will be formed from both input names, combining them with as a comma-separated list. |
name | Signature: [const] string name Description: Gets the name of the circuit Python specific notes: |
name= | Signature: void name= (string name) Description: Sets the name of the circuit Python specific notes: |
net_by_cluster_id | Signature: Net ptr net_by_cluster_id (unsigned long cluster_id) Description: Gets the net object corresponding to a specific cluster ID If the ID is not a valid pin cluster ID, nil is returned. |
net_by_name | (1) Signature: Net ptr net_by_name (string name) Description: Gets the net object for a given name. If the ID is not a valid net name, nil is returned. |
(2) Signature: [const] const Net ptr net_by_name (string name) Description: Gets the net object for a given name (const version). If the ID is not a valid net name, nil is returned. This constness variant has been introduced in version 0.26.8 | |
net_for_pin | (1) Signature: Net ptr net_for_pin (unsigned long pin_id) Description: Gets the net object attached to a specific pin. This is the net object inside the circuit which attaches to the given outward-bound pin. This method returns nil if the pin is not connected or the pin ID is invalid. |
(2) Signature: [const] const Net ptr net_for_pin (unsigned long pin_id) Description: Gets the net object attached to a specific pin (const version). This is the net object inside the circuit which attaches to the given outward-bound pin. This method returns nil if the pin is not connected or the pin ID is invalid. This constness variant has been introduced in version 0.26.8 | |
(3) Signature: Net ptr net_for_pin (const Pin ptr pin) Description: Gets the net object attached to a specific pin. This is the net object inside the circuit which attaches to the given outward-bound pin. This method returns nil if the pin is not connected or the pin object is nil. | |
(4) Signature: [const] const Net ptr net_for_pin (const Pin ptr pin) Description: Gets the net object attached to a specific pin (const version). This is the net object inside the circuit which attaches to the given outward-bound pin. This method returns nil if the pin is not connected or the pin object is nil. This constness variant has been introduced in version 0.26.8 | |
netlist | (1) Signature: Netlist ptr netlist Description: Gets the netlist object the circuit lives in |
(2) Signature: [const] const Netlist ptr netlist Description: Gets the netlist object the circuit lives in (const version) This constness variant has been introduced in version 0.26.8 | |
nets_by_name | (1) Signature: Net ptr[] nets_by_name (string name_pattern) Description: Gets the net objects for a given name filter. The name filter is a glob pattern. This method will return all Net objects matching the glob pattern. This method has been introduced in version 0.27.3. |
(2) Signature: [const] const Net ptr[] nets_by_name (string name_pattern) Description: Gets the net objects for a given name filter (const version). The name filter is a glob pattern. This method will return all Net objects matching the glob pattern. This constness variant has been introduced in version 0.27.3 | |
pin_by_id | (1) Signature: Pin ptr pin_by_id (unsigned long id) Description: Gets the Pin object corresponding to a specific ID If the ID is not a valid pin ID, nil is returned. |
(2) Signature: [const] const Pin ptr pin_by_id (unsigned long id) Description: Gets the Pin object corresponding to a specific ID (const version) If the ID is not a valid pin ID, nil is returned. This constness variant has been introduced in version 0.26.8 | |
pin_by_name | (1) Signature: Pin ptr pin_by_name (string name) Description: Gets the Pin object corresponding to a specific name If the ID is not a valid pin name, nil is returned. |
(2) Signature: [const] const Pin ptr pin_by_name (string name) Description: Gets the Pin object corresponding to a specific name (const version) If the ID is not a valid pin name, nil is returned. This constness variant has been introduced in version 0.26.8 | |
pin_count | Signature: [const] unsigned long pin_count Description: Gets the number of pins in the circuit |
purge_devices | Signature: void purge_devices Description: Purges invalid devices. Purges devices which are considered invalid. Such devices are for example those whose terminals are all connected to a single net. This method has been added in version 0.29.7. |
purge_nets | Signature: void purge_nets Description: Purges floating nets. Floating nets are nets with no device or subcircuit attached to. Such floating nets are removed in this step. If these nets are connected outward to a circuit pin, this circuit pin is also removed. |
purge_nets_keep_pins | Signature: void purge_nets_keep_pins Description: Purges floating nets but keep pins. This method will remove floating nets like purge_nets, but if these nets are attached to a pin, the pin will be left disconnected from any net. This method has been introduced in version 0.26.2. |
remove_device | Signature: void remove_device (Device ptr device) Description: Removes the given device from the circuit |
remove_net | Signature: void remove_net (Net ptr net) Description: Removes the given net from the circuit |
remove_pin | Signature: void remove_pin (unsigned long id) Description: Removes the pin with the given ID from the circuit This method has been introduced in version 0.26.2. |
remove_subcircuit | Signature: void remove_subcircuit (SubCircuit ptr subcircuit) Description: Removes the given subcircuit from the circuit |
rename_pin | Signature: void rename_pin (unsigned long id, string new_name) Description: Renames the pin with the given ID to 'new_name' This method has been introduced in version 0.26.8. |
subcircuit_by_id | (1) Signature: SubCircuit ptr subcircuit_by_id (unsigned long id) Description: Gets the subcircuit object for a given ID. If the ID is not a valid subcircuit ID, nil is returned. |
(2) Signature: [const] const SubCircuit ptr subcircuit_by_id (unsigned long id) Description: Gets the subcircuit object for a given ID (const version). If the ID is not a valid subcircuit ID, nil is returned. This constness variant has been introduced in version 0.26.8 | |
subcircuit_by_name | (1) Signature: SubCircuit ptr subcircuit_by_name (string name) Description: Gets the subcircuit object for a given name. If the ID is not a valid subcircuit name, nil is returned. |
(2) Signature: [const] const SubCircuit ptr subcircuit_by_name (string name) Description: Gets the subcircuit object for a given name (const version). If the ID is not a valid subcircuit name, nil is returned. This constness variant has been introduced in version 0.26.8 |