69 lines
1.8 KiB
Julia
69 lines
1.8 KiB
Julia
# TODO: proper escaping
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import DataFlow: mapconst, cse
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export @net
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function process_func(ex, params = [])
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@capture(shortdef(ex), (args__,) -> body_)
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body = @> body MacroTools.flatten block liftloops(params) graphm DataFlow.il
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body = mapconst(x -> x in params ? :(self.$x) : x, body)
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return args, body
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end
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function makegraph(graph, args)
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@assert length(args) == 1
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mapconst(graph) do x
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x == args[1] ? inputnode(1) :
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isa(x, Offset) ? :(Offset($(Expr(:quote, x.name)), $(x.n), self.$(x.name))) :
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x
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end
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end
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function build_type(T, params)
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ex = quote
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type $T <: Model
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$(params...)
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end
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end
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if any(x->isexpr(x, Symbol), params)
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push!(ex.args,
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:($T($(map(x->isexpr(x, Symbol) ? :($x::AArray) : x, params)...)) =
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$T($(map(x->isexpr(x, Symbol) ? :(param($x)) : namify(x), params)...))))
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end
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ex
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end
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import Lazy: groupby
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reifyparams(v::IVertex) = mapconst(x -> isa(x, Param) ? x.x : x, v)
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function process_type(ex)
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@capture(ex, type T_ fs__ end)
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@destruct [params = false || [],
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funcs = true || []] = groupby(x->isexpr(x, :->, :function), fs)
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@assert length(funcs) == 1
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pnames = namify.(params)
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args, body = process_func(funcs[1], pnames)
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@assert length(args) == 1
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quote
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$(build_type(T, params))
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(self::$T)($(args...),) = interpret(reifyparams(graph(self)), $(args...))
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update!(self::$T, η) = $(map(p -> :(update!(self.$p, η)), pnames)...)
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graph(self::$T) = $(DataFlow.constructor(makegraph(body, args)))
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nothing
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end |> esc
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end
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function process_anon(ex)
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args, body = process_func(ex)
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@assert length(args) == 1
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:(Flux.Capacitor($(DataFlow.constructor(makegraph(body, args))))) |> esc
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end
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macro net(ex)
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isexpr(ex, :type) ? process_type(ex) :
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isexpr(ex, :->, :function) ? process_anon(ex) :
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error("Unsupported model expression $ex")
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end
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