diff mbox series

[v4,38/46] qapi/introspect.py: add _gen_features helper

Message ID 20200930043150.1454766-39-jsnow@redhat.com
State Superseded
Headers show
Series qapi: static typing conversion, pt1 | expand

Commit Message

John Snow Sept. 30, 2020, 4:31 a.m. UTC
_make_tree might receive a dict or some other type. Adding features
information should arguably be performed by the caller at such a time
when we know the type of the object and don't have to re-interrogate it.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 scripts/qapi/introspect.py | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

Comments

Eduardo Habkost Sept. 30, 2020, 5:21 p.m. UTC | #1
On Wed, Sep 30, 2020 at 12:31:42AM -0400, John Snow wrote:
> _make_tree might receive a dict or some other type. Adding features

> information should arguably be performed by the caller at such a time

> when we know the type of the object and don't have to re-interrogate it.

> 

> Signed-off-by: John Snow <jsnow@redhat.com>

> ---

>  scripts/qapi/introspect.py | 19 ++++++++++++-------

>  1 file changed, 12 insertions(+), 7 deletions(-)

> 

> diff --git a/scripts/qapi/introspect.py b/scripts/qapi/introspect.py

> index f7de3953391..5cbdc7414bd 100644

> --- a/scripts/qapi/introspect.py

> +++ b/scripts/qapi/introspect.py

> @@ -52,16 +52,12 @@

>  

>  

>  def _make_tree(obj: Union[_DObject, str], ifcond: List[str],

> -               features: List[QAPISchemaFeature],

>                 extra: Optional[Extra] = None

>                 ) -> Union[TreeNode, AnnotatedNode]:

>      if extra is None:

>          extra = {}

>      if ifcond:

>          extra['if'] = ifcond

> -    if features:

> -        assert isinstance(obj, dict)

> -        obj['features'] = [(f.name, {'if': f.ifcond}) for f in features]


Now the reason for moving this code outside _make_tree() is more
obvious due to the type annotations.

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>


>      if extra:

>          return (obj, extra)

>      return obj

> @@ -197,6 +193,11 @@ def _use_type(self, typ: QAPISchemaType) -> str:

>              return '[' + self._use_type(typ.element_type) + ']'

>          return self._name(typ.name)

>  

> +    @classmethod

> +    def _gen_features(cls,

> +                      features: List[QAPISchemaFeature]) -> List[TreeNode]:

> +        return [_make_tree(f.name, f.ifcond) for f in features]

> +

>      def _gen_tree(self, name: str, mtype: str, obj: _DObject,

>                    ifcond: List[str],

>                    features: Optional[List[QAPISchemaFeature]]) -> None:

> @@ -209,7 +210,9 @@ def _gen_tree(self, name: str, mtype: str, obj: _DObject,

>              name = self._name(name)

>          obj['name'] = name

>          obj['meta-type'] = mtype

> -        self._trees.append(_make_tree(obj, ifcond, features, extra))

> +        if features:

> +            obj['features'] = self._gen_features(features)

> +        self._trees.append(_make_tree(obj, ifcond, extra))

>  

>      def _gen_member(self,

>                      member: QAPISchemaObjectTypeMember) -> TreeNode:

> @@ -219,7 +222,9 @@ def _gen_member(self,

>          }

>          if member.optional:

>              obj['default'] = None

> -        return _make_tree(obj, member.ifcond, member.features)

> +        if member.features:

> +            obj['features'] = self._gen_features(member.features)

> +        return _make_tree(obj, member.ifcond)

>  

>      def _gen_variants(self, tag_name: str,

>                        variants: List[QAPISchemaVariant]) -> _DObject:

> @@ -231,7 +236,7 @@ def _gen_variant(self, variant: QAPISchemaVariant) -> TreeNode:

>              'case': variant.name,

>              'type': self._use_type(variant.type)

>          }

> -        return _make_tree(obj, variant.ifcond, None)

> +        return _make_tree(obj, variant.ifcond)

>  

>      def visit_builtin_type(self, name: str, info: Optional[QAPISourceInfo],

>                             json_type: str) -> None:

> -- 

> 2.26.2

> 


-- 
Eduardo
diff mbox series

Patch

diff --git a/scripts/qapi/introspect.py b/scripts/qapi/introspect.py
index f7de3953391..5cbdc7414bd 100644
--- a/scripts/qapi/introspect.py
+++ b/scripts/qapi/introspect.py
@@ -52,16 +52,12 @@ 
 
 
 def _make_tree(obj: Union[_DObject, str], ifcond: List[str],
-               features: List[QAPISchemaFeature],
                extra: Optional[Extra] = None
                ) -> Union[TreeNode, AnnotatedNode]:
     if extra is None:
         extra = {}
     if ifcond:
         extra['if'] = ifcond
-    if features:
-        assert isinstance(obj, dict)
-        obj['features'] = [(f.name, {'if': f.ifcond}) for f in features]
     if extra:
         return (obj, extra)
     return obj
@@ -197,6 +193,11 @@  def _use_type(self, typ: QAPISchemaType) -> str:
             return '[' + self._use_type(typ.element_type) + ']'
         return self._name(typ.name)
 
+    @classmethod
+    def _gen_features(cls,
+                      features: List[QAPISchemaFeature]) -> List[TreeNode]:
+        return [_make_tree(f.name, f.ifcond) for f in features]
+
     def _gen_tree(self, name: str, mtype: str, obj: _DObject,
                   ifcond: List[str],
                   features: Optional[List[QAPISchemaFeature]]) -> None:
@@ -209,7 +210,9 @@  def _gen_tree(self, name: str, mtype: str, obj: _DObject,
             name = self._name(name)
         obj['name'] = name
         obj['meta-type'] = mtype
-        self._trees.append(_make_tree(obj, ifcond, features, extra))
+        if features:
+            obj['features'] = self._gen_features(features)
+        self._trees.append(_make_tree(obj, ifcond, extra))
 
     def _gen_member(self,
                     member: QAPISchemaObjectTypeMember) -> TreeNode:
@@ -219,7 +222,9 @@  def _gen_member(self,
         }
         if member.optional:
             obj['default'] = None
-        return _make_tree(obj, member.ifcond, member.features)
+        if member.features:
+            obj['features'] = self._gen_features(member.features)
+        return _make_tree(obj, member.ifcond)
 
     def _gen_variants(self, tag_name: str,
                       variants: List[QAPISchemaVariant]) -> _DObject:
@@ -231,7 +236,7 @@  def _gen_variant(self, variant: QAPISchemaVariant) -> TreeNode:
             'case': variant.name,
             'type': self._use_type(variant.type)
         }
-        return _make_tree(obj, variant.ifcond, None)
+        return _make_tree(obj, variant.ifcond)
 
     def visit_builtin_type(self, name: str, info: Optional[QAPISourceInfo],
                            json_type: str) -> None: