1 Pips to Eole data structures

import expression from "ri.newgen"

import entity from "ri.newgen"

expressionwithlevel = level:entity* x expression

lexpressionwithlevel = list:expressionwithlevel*

2 Nested sequence data structure

function = op:entity x args:entity*

assignment = lhs:function x rhs:function x dependences:entity*

persistant_expression_to_entity = persistant expression -> entity