Use numchildren

- `length(node.args)` => `numchildren(node)`

Author: inkydragon

src/JuliaSyntaxHighlighting.jl

@@ -209,7 +209,7 @@ function _hl_annotations!(highlights::Vector{@NamedTuple{region::UnitRange{Int},
                 :julia_type
             end
         end
-    elseif nkind == K"macrocall" && length(node.args) >= 2 &&
+    elseif nkind == K"macrocall" && numchildren(node) >= 2 &&
         kind(node.args[1]) == K"@" && kind(node.args[2]) == K"MacroName"
         region = first(region):first(region)+node.args[2].span
         :julia_macro
@@ -228,7 +228,7 @@ function _hl_annotations!(highlights::Vector{@NamedTuple{region::UnitRange{Int},
                 :julia_type
             end
         end
-    elseif nkind == K"quote" && length(node.args) == 2 &&
+    elseif nkind == K"quote" && numchildren(node) == 2 &&
         kind(node.args[1]) == K":" && kind(node.args[2]) == K"Identifier"
         :julia_symbol
     elseif nkind == K"Comment"; :julia_comment
@@ -293,9 +293,9 @@ function _hl_annotations!(highlights::Vector{@NamedTuple{region::UnitRange{Int},
             region = first(region):first(region)+argoffset-1
             name = Symbol(regionstr)
             ifelse(name in BUILTIN_FUNCTIONS, :julia_builtin, :julia_funcall)
-        elseif kind(arg1) == K"." && length(arg1.args) == 3  &&
+        elseif kind(arg1) == K"." && numchildren(arg1) == 3  &&
             kind(arg1.args[end]) == K"quote" &&
-            length(arg1.args[end].args) == 1 &&
+            numchildren(arg1.args[end]) == 1 &&
             kind(arg1.args[end].args[1]) == K"Identifier"
             region = first(region)+argoffset-arg1.args[end].args[1].span:first(region)+argoffset-1
             name = Symbol(regionstr)