Add StatsProcedures and redesign interfaces

Author: junyuan-chen

Project.toml

@@ -5,15 +5,25 @@ version = "0.1.0"
 
 [deps]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
+Combinatorics = "861a8166-3701-5b0c-9a16-15d98fcdc6aa"
+MacroTools = "1914dd2f-81c6-5fcd-8719-6d5c9610ff09"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
+SplitApplyCombine = "03a91e81-4c3e-53e1-a0a4-9c0c8f19dd66"
 StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
 StatsModels = "3eaba693-59b7-5ba5-a881-562e759f1c8d"
+Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
+TypedTables = "9d95f2ec-7b3d-5a63-8d20-e2491e220bb9"
 
 [compat]
 CSV = "0.8"
+Combinatorics = "1"
+MacroTools = "0.5"
 Reexport = "0.2, 1"
+SplitApplyCombine = "1.1"
 StatsBase = "0.33"
 StatsModels = "0.6.18"
+Tables = "1.2"
+TypedTables = "1.2"
 julia = "1.3"
 
 [extras]

src/DiffinDiffsBase.jl

@@ -1,12 +1,22 @@
 module DiffinDiffsBase
 
+using Combinatorics: combinations
 using CSV: File
+using MacroTools: @capture, isexpr, postwalk
 using Reexport
 using StatsBase
 @reexport using StatsModels
+using StatsModels: TupleTerm
+using SplitApplyCombine: groupfind
+using Tables: columntable, istable, rows, columns, getcolumn
+using TypedTables: Table, getproperty, getproperties
 
-import Base: ==, show
-import Base: eltype, getindex, iterate, length
+import Base: ==, show, union
+import Base: eltype, firstindex, lastindex, getindex, iterate, length
+
+import StatsModels: termvars
+
+export TupleTerm
 
 export @fieldequal,
        eachterm,
@@ -46,10 +56,17 @@ export @fieldequal,
        hastreat,
        parse_treat,
 
+       StatsStep,
+       @show_StatsStep,
        AbstractStatsProcedure,
+       SharedStatsStep,
+       PooledStatsProcedure,
+       pool,
        StatsSpec,
-       isnamed,
-       StatsSpecSet,
+       @specset,
+
+       check_data,
+       CheckData,
 
        DiffinDiffsEstimator,
        DefaultDID,
@@ -65,6 +82,7 @@ include("utils.jl")
 include("treatments.jl")
 include("parallels.jl")
 include("terms.jl")
+include("StatsProcedures.jl")
 include("procedures.jl")
 include("did.jl")