Arm backend: Make get_output_format private

Rename `get_output_format()` to `_get_output_format()` and update
internal callers so it is no longer exposed in generated docs.

Change-Id: I2a58173b497d54254b086b41f719c05a23ad3c54
Signed-off-by: Sebastian Larsson <sebastian.larsson@arm.com>

Author: Sebastian-Larsson

backends/arm/common/arm_compile_spec.py

@@ -117,9 +117,9 @@ def from_list(cls, compile_specs: list[CompileSpec]):  # noqa: C901
             raise ValueError("No tosa_spec in compile spec.")
         if output_format is None:
             raise ValueError("No output_format in compile spec.")
-        if output_format != cls.get_output_format():
+        if output_format != cls._get_output_format():
             raise ValueError(
-                f"Incorrect output format '{output_format}' for {cls.__name__}, expected '{cls.get_output_format()}'"
+                f"Incorrect output format '{output_format}' for {cls.__name__}, expected '{cls._get_output_format()}'"
             )
         if compiler_flags is None:
             compiler_flags = []
@@ -170,7 +170,7 @@ def to_list(self):
         # Add output format to identify kind of compile spec.
         compile_spec.append(
             CompileSpec(
-                ArmCompileSpec._OUTPUT_FORMAT_KEY, self.get_output_format().encode()
+                ArmCompileSpec._OUTPUT_FORMAT_KEY, self._get_output_format().encode()
             )
         )
 
@@ -285,5 +285,5 @@ def get_output_order_workaround(self) -> bool:
 
     @classmethod
     @abstractmethod
-    def get_output_format(cls) -> str:
+    def _get_output_format(cls) -> str:
         """Returns a constant string that is the output format of the class."""

backends/arm/ethosu/compile_spec.py

@@ -144,7 +144,7 @@ def _validate(self):
             )
 
     @classmethod
-    def get_output_format(cls) -> str:
+    def _get_output_format(cls) -> str:
         """Return the artifact format emitted by this compile spec."""
         return "vela"
 

backends/arm/test/tester/arm_tester.py

@@ -1226,7 +1226,7 @@ def _get_tosa_operator_distribution(
             raise NotImplementedError("Can not get operator distribution for VGF.")
         else:
             raise NotImplementedError(
-                f"Unknown output format '{compile_spec.get_output_format()}'."
+                f"Unknown output format '{compile_spec._get_output_format()}'."
             )
         id += 1
     if id == 0:

backends/arm/tosa/compile_spec.py

@@ -34,7 +34,7 @@ def _validate(self):
         pass
 
     @classmethod
-    def get_output_format(cls) -> str:
+    def _get_output_format(cls) -> str:
         """Return the artifact format emitted by this compile spec."""
         return "tosa"
 

backends/arm/util/_factory.py

@@ -1,4 +1,4 @@
-# Copyright 2025 Arm Limited and/or its affiliates.
+# Copyright 2025-2026 Arm Limited and/or its affiliates.
 #
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
@@ -25,11 +25,11 @@ def parse_compile_spec(compile_specs: list[CompileSpec]) -> ArmCompileSpec:
             break
     else:
         raise ValueError("Compile spec without output format.")
-    if output_format == TosaCompileSpec.get_output_format():
+    if output_format == TosaCompileSpec._get_output_format():
         return TosaCompileSpec.from_list(compile_specs)
-    if output_format == EthosUCompileSpec.get_output_format():
+    if output_format == EthosUCompileSpec._get_output_format():
         return EthosUCompileSpec.from_list(compile_specs)
-    if output_format == VgfCompileSpec.get_output_format():
+    if output_format == VgfCompileSpec._get_output_format():
         return VgfCompileSpec.from_list(compile_specs)
     raise ValueError(f"Unknown output format {output_format}")
 

backends/arm/vgf/compile_spec.py

@@ -63,7 +63,7 @@ def _validate(self):
             )
 
     @classmethod
-    def get_output_format(cls) -> str:
+    def _get_output_format(cls) -> str:
         """Return the artifact format emitted by this compile spec."""
         return "vgf"
 

docs/source/backends/arm-ethos-u/arm-ethos-u-overview.md

@@ -82,11 +82,6 @@ pte.
 Returns:
     Path where intermediate results are saved.
 
-```python
-def EthosUCompileSpec.get_output_format() -> str:
-```
-Return the artifact format emitted by this compile spec.
-
 ```python
 def EthosUCompileSpec.get_output_order_workaround(self) -> bool:
 ```

docs/source/backends/arm-vgf/arm-vgf-overview.md

@@ -73,11 +73,6 @@ pte.
 Returns:
     Path where intermediate results are saved.
 
-```python
-def VgfCompileSpec.get_output_format() -> str:
-```
-Return the artifact format emitted by this compile spec.
-
 ```python
 def VgfCompileSpec.get_output_order_workaround(self) -> bool:
 ```