Construct PortableRegistry dynamically at runtime (#164)

* WIP: allow constructing MetaTypes at runtime

* Remove fmt config options

* Add some docs

* std feature String

* fully qualified String

* Fix features build

* Generic string parameter for MetaType

* Remove license_template_path

* Fmt

* Fix fmt

* Replace MetaFormString trait with cfg based string

* Remove unused into

* Fix more errors

* Now string types are the same across Meta/Portable, no longer necessary to convert

* Remove custom MetaType and TypeId

* EXPERIMENT: make all type def fields public to allow construting PortableRegistry dynamically

* Rename test

* Fix up type ids in test

* Fix ui test

* *TEMPORARILY* pub registry for PortableType

* add constructor for portableregistry

* constructor for PortableType

* implement remaining constructors for generic Form

* make Type::new constructor public

* make remaining constructor public

* add a new custom constructor for path

* use new_custom in a test

* Remove not required builder fn for MetaType

* WIP propogate Form through builders

* Fix up path builders

* More fixes

* Fix up generated From impls

* Fix up field builders

* Fix up field builder methods for MetaForm

* Rename constructor

* Hide pub fields and add portable builder helper methods

* Fmt

* Explicity export PortableType

* Clippy

* Move PortableRegistry to own file, introduce PortableRegistryBuilder

* Remove some stray `Str` type params

* Implement PortableRegistryBuilder to manage ids

* Default impl for PortableRegistryBuilder

* implement getter for registered types in PortableRegistryBuilder

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

* Rename new path constructor

* Rename new_custom methods to new_portable

* Revert reordering of MetaForm

* Move path construction back to MetaForm for non-breaking changes

* Update path tests

* TypeParameter::new_portable for non breaking change

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>
Co-authored-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

.rustfmt.toml

@@ -9,7 +9,6 @@ format_code_in_doc_comments = false
 comment_width = 80
 normalize_comments = true # changed
 normalize_doc_attributes = false
-license_template_path = "FILE_TEMPLATE" # changed
 format_strings = false
 format_macro_matchers = false
 format_macro_bodies = true
@@ -57,8 +56,6 @@ skip_children = false
 hide_parse_errors = false
 error_on_line_overflow = false
 error_on_unformatted = false
-report_todo = "Always"
-report_fixme = "Always"
 ignore = []
 
 # Below are `rustfmt` internal settings

derive/src/lib.rs

@@ -288,9 +288,13 @@ impl TypeInfoImpl {
             })
             .collect::<Vec<_>>();
 
-        Some(quote! {
-            .#docs_builder_fn(&[ #( #docs ),* ])
-        })
+        if !docs.is_empty() {
+            Some(quote! {
+                .#docs_builder_fn([ #( #docs ),* ])
+            })
+        } else {
+            None
+        }
     }
 }