Skip to contents

Convert a multimod AST node to Pyomo syntax

Source: R/as_pyomo.R
as_pyomo.Rd

This helper mirrors as_jump() but emits Python/Pyomo-friendly strings. The implementation focuses on linear expressions (sum/prod, arithmetic operators, variable/parameter references). Unsupported node types raise informative errors so coverage can be extended incrementally.

Usage

as_pyomo(x, ...)

Arguments

x

An AST node (e.g. equation, expression, variable, parameter).

...

Additional arguments used internally:

  • model: multimod model for alias lookups.

  • var_names: named vector mapping base set names to iterator aliases (used when emitting constraint bodies).

  • scope: local iterator scope for nested aggregations.

Value

Character string containing Pyomo-compatible code.

Examples

toy <- example_models$toy
cat(as_pyomo(toy$equations$eqDemand, model = toy))
#> def _eqDemand_rule(model, r):
#>     if not (r in model.mR):
#>         return Constraint.Skip
#>     _expr = sum(model.vGen[tech, r] for tech in model.tech) >= model.pDemand[r]
#>     if _expr is True or _expr is False:
#>         return Constraint.Feasible if _expr else Constraint.Infeasible
#>     return _expr
#> 
#> model.eqDemand = Constraint(model.region, rule=_eqDemand_rule)