Enable ObjectiveC framework enum and struct parsing (#524)

* Properly skip `EnumForwardDecl`s even with attributes

* Split up `create_context`

* Skip ObjectiveC nodes

src/generator/context.jl

@@ -90,6 +90,11 @@ function create_context(headers::Vector, args::Vector=String[], options::Dict=Di
     @info "Parsing headers..."
     parse_headers!(ctx, headers, args)
 
+    add_default_passes!(ctx, options, system_dirs, dependent_headers)
+end
+
+function add_default_passes!(ctx::AbstractContext, options::Dict, system_dirs::Vector, dependent_headers::Vector)
+
     push!(ctx.passes, CollectTopLevelNode(ctx.trans_units, dependent_headers, system_dirs))
     push!(ctx.passes, LinkTypedefToAnonymousTagType())
     push!(ctx.passes, LinkTypedefToAnonymousTagType(is_system=true))

src/generator/top_level.jl

@@ -159,6 +159,23 @@ function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLEnumDecl, o
     return nodes
 end
 
+# TODO: Implement full ObjectiveC codegen
+function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLObjCClassRef, options)
+    return nodes
+end
+function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLObjCProtocolDecl, options)
+    return nodes
+end
+function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLObjCProtocolRef, options)
+    return nodes
+end
+function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLObjCInterfaceDecl, options)
+    return nodes
+end
+function collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLObjCCategoryDecl, options)
+    return nodes
+end
+
 # skip macro expansion since the expanded info is already embedded in the AST
 collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLMacroInstantiation, options) = nodes
 collect_top_level_nodes!(nodes::Vector{ExprNode}, cursor::CLMacroExpansion, options) = nodes

src/generator/types.jl

@@ -147,7 +147,7 @@ struct EnumDuplicated <: AbstractEnumNodeType end
 struct EnumDefault <: AbstractEnumNodeType end
 
 """
-    EnumLayout{Attribute} <: AbstractStructNodeType
+    EnumLayout{Attribute} <: AbstractEnumNodeType
 Enum nodes that have special layout.
 """
 struct EnumLayout{Attribute} <: AbstractEnumNodeType end