Ensure type is properly initialized

Commit 8a8deee handles self-references in the
specification by placing the still being constructed
type in the type dict before recursing into its children.

This is the correct thing to do, but we forgot that now
the type information is incomplete when it is
initialized. Therefore the `required_fields` and
`all_fields` variables were not set correctly.

This caused type inference to fail in particular cases
such as for `Dirent`

We now re-run the init (the setup) once the type is
completely constructed ...

Version bumped to 2020.01.21. Happy New Year!

Closes #77
Closes #76

benten/cwl/recordtype.py

@@ -1,4 +1,4 @@
-#  Copyright (c) 2019 Seven Bridges. See LICENSE
+#  Copyright (c) 2019-2020 Seven Bridges. See LICENSE
 
 from typing import Dict
 
@@ -28,6 +28,10 @@ def __init__(self, name: str, doc: str, fields: Dict[str, 'CWLFieldType']):
         self.required_fields = set((k for k, v in self.fields.items() if v.required))
         self.all_fields = set(self.fields.keys())
 
+    def init(self):
+        self.required_fields = set((k for k, v in self.fields.items() if v.required))
+        self.all_fields = set(self.fields.keys())
+
     def check(self, node, node_key: str=None, map_sp: MapSubjectPredicate=None) -> TypeCheck:
 
         if node is None:

benten/cwl/specification.py

@@ -1,7 +1,7 @@
 """Code to load the CWL specification from JSON and represent it as a
 set of types"""
 
-#  Copyright (c) 2019 Seven Bridges. See LICENSE
+#  Copyright (c) 2019-2020 Seven Bridges. See LICENSE
 
 import json
 
@@ -128,6 +128,8 @@ def parse_record(schema, lang_model):
         for field in schema.get("fields") for k, v in [parse_field(field, lang_model)]
     })
 
+    lang_model[record_name].init()
+
     return lang_model.get(record_name)
 
 

benten/version.py

@@ -1,3 +1,3 @@
-#  Copyright (c) 2019 Seven Bridges. See LICENSE
+#  Copyright (c) 2019-2020 Seven Bridges. See LICENSE
 
-__version__ = "2019.12.06"
+__version__ = "2020.01.21"

tests/test_language_specification.py

@@ -1,4 +1,4 @@
-#  Copyright (c) 2019 Seven Bridges. See LICENSE
+#  Copyright (c) 2019-2020 Seven Bridges. See LICENSE
 
 import pathlib
 
@@ -21,6 +21,9 @@ def test_load_language_specification():
     assert "steps" in lang_model["Workflow"].fields
     assert lang_model["Workflow"].fields["steps"].required
 
+    # Ensure type is properly initialized after forward construction
+    assert "entry" in lang_model["Dirent"].required_fields
+
 
 def test_forward_reference_resolution():
     type_dict = parse_schema(schema_fname)