a sort of map of the code.

===================
PRIMITIVE DATA STRUCTURES

Dim {
int cardinality;
}

DAGNode {
Operator op;
orderedSet<Dim> result_dims;
orderedSet<int> result_dim_strides;
}

DAG {
DAGNode node;
UnorderedSet<DAG> inputs;
UnorderedSet<DAG> outputs;
}

==================
MAIN DATA STRUCTURES

String code;

++++++++++++++

|
| parser
\|/

++++++++++++++

ProtoNet {
OrderedSet<DAG> inputs;
OrderedSet<DAG> outputs;
Hashtable<String, DAG> named_channels;
Hashtable<String, Dim> dim_hash;

Hashtable<String, ProtoNet> subnets;
}

++++++++++++++

|
| instantiator
\|/

++++++++++++++

LiveNet {
ProtoNet prototype;

OrderedSet<DAG> inputs;
OrderedSet<DAG> outputs;
Hashtable<String, DAG> named_channels;
Hashtable<String, Dim> dim_hash;

Hashtable<String, LiveNet> members;
}

++++++++++++++

|
| evaluation (interpreter) or code generation (compiler)
\|/