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Adding inputs and outputs functions #1209

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d07d063
Adding inputs and outputs functions
dannys4 Aug 17, 2021
b6ed591
export functions
dannys4 Aug 17, 2021
8b9df93
Adding documentation
dannys4 Aug 17, 2021
83be3de
Add observed to outputs
dannys4 Aug 17, 2021
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16 changes: 15 additions & 1 deletion src/ModelingToolkit.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,20 @@ function states end
"""
$(TYPEDSIGNATURES)

Get the set of states decorated as inputs for the given system.
"""
function inputs end

"""
$(TYPEDSIGNATURES)

Get the set of states decorated as outputs for the given system.
"""
function outputs end

"""
$(TYPEDSIGNATURES)

Get the set of parameters variables for the given system.
"""
function parameters end
Expand Down Expand Up @@ -173,7 +187,7 @@ export Differential, expand_derivatives, @derivatives
export Equation, ConstrainedEquation
export Term, Sym
export SymScope, LocalScope, ParentScope, GlobalScope
export independent_variables, independent_variable, states, parameters, equations, controls, observed, structure
export independent_variables, independent_variable, states, parameters, equations, controls, observed, structure, inputs, outputs
export structural_simplify
export DiscreteSystem, DiscreteProblem

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9 changes: 9 additions & 0 deletions src/systems/abstractsystem.jl
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Expand Up @@ -392,6 +392,15 @@ function states(sys::AbstractSystem)
[sts; reduce(vcat,namespace_variables.(systems))])
end

function inputs(sys::AbstractSystem)
[st for st in states(sys) if isinput(st)]
end

function outputs(sys::AbstractSystem)
sts = vcat(states(sys), map(x->x.lhs, observed(sys)))
[st for st in sts if isoutput(st)]
end

function parameters(sys::AbstractSystem)
ps = get_ps(sys)
systems = get_systems(sys)
Expand Down