Formatting: format and add CI action

.github/workflows/format_check.yml

@@ -0,0 +1,31 @@
+name: format-check
+on:
+  push:
+    branches:
+      - master
+      - release-*
+  pull_request:
+    types: [opened, synchronize, reopened]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: '1'
+      - uses: actions/checkout@v1
+      - name: Format check
+        shell: julia --color=yes {0}
+        run: |
+          using Pkg
+          Pkg.add(PackageSpec(name="JuliaFormatter", version="0.13.2"))
+          using JuliaFormatter
+          format("src", verbose=true)
+          format("test", verbose=true)
+          out = String(read(Cmd(`git diff`)))
+          if isempty(out)
+              exit(0)
+          end
+          @error "Some files have not been formatted !!!"
+          write(stdout, out)
+          exit(1)

src/Containers/SparseAxisArray.jl

@@ -75,9 +75,12 @@ end
 # Error for sa[..., :, ...]
 function _colon_error() end
 function _colon_error(::Colon, args...)
-    return throw(ArgumentError(
-        "Indexing with `:` is not supported by" * " Containers.SparseAxisArray",
-    ))
+    return throw(
+        ArgumentError(
+            "Indexing with `:` is not supported by" *
+            " Containers.SparseAxisArray",
+        ),
+    )
 end
 _colon_error(arg, args...) = _colon_error(args...)
 
@@ -140,10 +143,12 @@ Base.Broadcast.newindex(d::SparseAxisArray, idx) = idx
 
 struct BroadcastStyle{N,K} <: Broadcast.BroadcastStyle end
 function Base.BroadcastStyle(::BroadcastStyle, ::Base.BroadcastStyle)
-    return throw(ArgumentError(
-        "Cannot broadcast Containers.SparseAxisArray with" *
-        " another array of different type",
-    ))
+    return throw(
+        ArgumentError(
+            "Cannot broadcast Containers.SparseAxisArray with" *
+            " another array of different type",
+        ),
+    )
 end
 # Scalars can be used with SparseAxisArray in broadcast
 function Base.BroadcastStyle(
@@ -171,10 +176,12 @@ function check_same_eachindex(each_index, not_sa, args...)
 end
 function check_same_eachindex(each_index, sa::SparseAxisArray, args...)
     if Set(each_index) != Set(eachindex(sa))
-        throw(ArgumentError(
-            "Cannot broadcast Containers.SparseAxisArray with" *
-            " different indices",
-        ))
+        throw(
+            ArgumentError(
+                "Cannot broadcast Containers.SparseAxisArray with" *
+                " different indices",
+            ),
+        )
     end
     return check_same_eachindex(eachindex, args...)
 end
@@ -277,10 +284,12 @@ function Base.show(io::IOContext, x::SparseAxisArray)
     half_screen_rows = limit ? div(displaysize(io)[1] - 8, 2) : typemax(Int)
     key_string(key::Tuple) = join(key, ", ")
     print_entry(i) = i < half_screen_rows || i > length(x) - half_screen_rows
-    pad = maximum(Int[
-        print_entry(i) ? length(key_string(key)) : 0
-        for (i, key) in enumerate(keys(x.data))
-    ])
+    pad = maximum(
+        Int[
+            print_entry(i) ? length(key_string(key)) : 0 for
+            (i, key) in enumerate(keys(x.data))
+        ],
+    )
     if !haskey(io, :compact)
         io = IOContext(io, :compact => true)
     end

src/Containers/generate_container.jl

@@ -104,9 +104,10 @@ function generate_container(T, indexvars, indexsets, requestedtype)
     arrayexpr = :(Array{$T}(undef, $sizes...))
 
     if requestedtype == :Array
-        has_dependent &&
-            return :(error("Unable to create requested Array because index sets are dependent.")),
-            true
+        has_dependent && return :(error(
+            "Unable to create requested Array because index sets are dependent.",
+        )),
+        true
         if all(onetosets)
             return arrayexpr, true
         else
@@ -137,9 +138,10 @@ function generate_container(T, indexvars, indexsets, requestedtype)
     append!(axisexpr.args, indexsets)
 
     if requestedtype == :DenseAxisArray
-        has_dependent &&
-            return :(error("Unable to create requested DenseAxisArray because index sets are dependent.")),
-            true
+        has_dependent && return :(error(
+            "Unable to create requested DenseAxisArray because index sets are dependent.",
+        )),
+        true
         return axisexpr, true
     end
 

src/Containers/macro.jl

@@ -132,7 +132,7 @@ function _parse_ref_sets(_error::Function, expr::Expr)
         if idxvar in idxvars
             _error(
                 "The index $(idxvar) appears more than once. The index " *
-                "associated with each set must be unique."
+                "associated with each set must be unique.",
             )
         end
         push!(idxvars, idxvar)
@@ -156,14 +156,16 @@ returns:
 function _build_ref_sets(_error::Function, expr)
     idxvars, idxsets, condition = _parse_ref_sets(_error, expr)
     if any(_expr_is_splat.(idxsets))
-        _error("cannot use splatting operator `...` in the definition of an index set.")
+        _error(
+            "cannot use splatting operator `...` in the definition of an index set.",
+        )
     end
     has_dependent = has_dependent_sets(idxvars, idxsets)
     if has_dependent || condition != :()
         esc_idxvars = esc.(idxvars)
         idxfuns = [
-            :(($(esc_idxvars[1:(i-1)]...),) -> $(idxsets[i]))
-            for i in 1:length(idxvars)
+            :(($(esc_idxvars[1:(i-1)]...),) -> $(idxsets[i])) for
+            i in 1:length(idxvars)
         ]
         if condition == :()
             indices = :(Containers.nested($(idxfuns...)))