fill out the other intos

Signed-off-by: Daniel King <[email protected]>

Author: danking

vortex-dtype/src/dtype.rs

@@ -334,6 +334,15 @@ impl DType {
         }
     }
 
+    /// Owned version of [as_decimal_opt].
+    pub fn into_decimal_opt(self) -> Option<DecimalDType> {
+        if let Decimal(decimal, _) = self {
+            Some(decimal)
+        } else {
+            None
+        }
+    }
+
     /// Get the inner element dtype if `self` is a [`DType::List`], otherwise returns `None`.
     ///
     /// Note that this does _not_ return `Some` if `self` is a [`DType::FixedSizeList`].
@@ -345,6 +354,15 @@ impl DType {
         }
     }
 
+    /// Owned version of [as_list_element_opt].
+    pub fn into_list_element_opt(self) -> Option<Arc<DType>> {
+        if let List(edt, _) = self {
+            Some(edt)
+        } else {
+            None
+        }
+    }
+
     /// Get the inner element dtype if `self` is a [`DType::FixedSizeList`], otherwise returns
     /// `None`.
     ///
@@ -357,6 +375,15 @@ impl DType {
         }
     }
 
+    /// Owned version of [as_fixed_size_list_element_opt].
+    pub fn into_fixed_size_list_element_opt(self) -> Option<Arc<DType>> {
+        if let FixedSizeList(edt, ..) = self {
+            Some(edt)
+        } else {
+            None
+        }
+    }
+
     /// Get the inner element dtype if `self` is **either** a [`DType::List`] or a
     /// [`DType::FixedSizeList`], otherwise returns `None`
     pub fn as_any_size_list_element_opt(&self) -> Option<&Arc<DType>> {
@@ -369,6 +396,17 @@ impl DType {
         }
     }
 
+    /// Owned version of [as_any_size_list_element_opt].
+    pub fn into_any_size_list_element_opt(self) -> Option<Arc<DType>> {
+        if let FixedSizeList(edt, ..) = self {
+            Some(edt)
+        } else if let List(edt, ..) = self {
+            Some(edt)
+        } else {
+            None
+        }
+    }
+
     /// Returns the [`StructFields`] from a struct [`DType`].
     ///
     /// # Panics
@@ -381,6 +419,14 @@ impl DType {
         vortex_panic!("DType is not a Struct")
     }
 
+    /// Owned version of [as_struct_fields].
+    pub fn into_struct_fields(self) -> StructFields {
+        if let Struct(f, _) = self {
+            return f;
+        }
+        vortex_panic!("DType is not a Struct")
+    }
+
     /// Get the `StructDType` if `self` is a `StructDType`, otherwise `None`
     pub fn as_struct_fields_opt(&self) -> Option<&StructFields> {
         if let Struct(f, _) = self {
@@ -390,19 +436,7 @@ impl DType {
         }
     }
 
-    /// Returns the [`StructFields`] from a struct [`DType`].
-    ///
-    /// # Panics
-    ///
-    /// If the [`DType`] is not a struct.
-    pub fn into_struct_fields(self) -> StructFields {
-        if let Struct(f, _) = self {
-            return f;
-        }
-        vortex_panic!("DType is not a Struct")
-    }
-
-    /// Get the `StructDType` if `self` is a `StructDType`, otherwise `None`
+    /// Owned version of [as_struct_fields_opt].
     pub fn into_struct_fields_opt(self) -> Option<StructFields> {
         if let Struct(f, _) = self {
             Some(f)