CMake Default Data

Author: Behemyth

cppython/plugins/cmake/resolution.py

@@ -1,9 +1,10 @@
 """Builder to help resolve cmake state"""
 
+import json
 from typing import Any
 
 from cppython.core.schema import CorePluginData
-from cppython.plugins.cmake.schema import CMakeConfiguration, CMakeData
+from cppython.plugins.cmake.schema import CMakeConfiguration, CMakeData, CMakePresets
 
 
 def resolve_cmake_data(data: dict[str, Any], core_data: CorePluginData) -> CMakeData:
@@ -20,8 +21,15 @@ def resolve_cmake_data(data: dict[str, Any], core_data: CorePluginData) -> CMake
 
     root_directory = core_data.project_data.project_root.absolute()
 
-    modified_preset = parsed_data.preset_file
-    if not modified_preset.is_absolute():
-        modified_preset = root_directory / modified_preset
+    modified_preset_dir = parsed_data.preset_file
+    if not modified_preset_dir.is_absolute():
+        modified_preset_dir = root_directory / modified_preset_dir
 
-    return CMakeData(preset_file=modified_preset, configuration_name=parsed_data.configuration_name)
+    # If the user hasn't specified a preset file, we need to create one
+    if not modified_preset_dir.exists():
+        modified_preset_dir.parent.mkdir(parents=True, exist_ok=True)
+        with modified_preset_dir.open('w', encoding='utf-8') as file:
+            presets_dict = CMakePresets().model_dump_json(exclude_none=True)
+            json.dump(presets_dict, file, ensure_ascii=False, indent=4)
+
+    return CMakeData(preset_file=modified_preset_dir, configuration_name=parsed_data.configuration_name)

cppython/plugins/cmake/schema.py

@@ -74,4 +74,4 @@ class CMakeConfiguration(CPPythonModel):
     ] = Path('CMakePresets.json')
     configuration_name: Annotated[
         str, Field(description='The CMake configuration preset to look for and override inside the given `preset_file`')
-    ]
+    ] = 'cppython'

cppython/test/pytest/shared.py

@@ -226,6 +226,17 @@ class DataPluginIntegrationTests[T: DataPlugin](BaseIntegrationTests[T], metacla
 class DataPluginUnitTests[T: DataPlugin](BaseUnitTests[T], metaclass=ABCMeta):
     """Unit testing information for all data plugin test classes"""
 
+    @staticmethod
+    def test_empty_data(
+        plugin_type: type[T],
+        plugin_group_data: DataPluginGroupData,
+        core_plugin_data: CorePluginData,
+    ) -> None:
+        """All data plugins should be able to be constructed with empty data"""
+        plugin = plugin_type(plugin_group_data, core_plugin_data, {})
+
+        assert plugin, 'The plugin should be able to be constructed with empty data'
+
 
 class ProviderTests[T: Provider](DataPluginTests[T], metaclass=ABCMeta):
     """Shared functionality between the different Provider testing categories"""

examples/vcpkg_cmake/simple/pyproject.toml

@@ -15,5 +15,7 @@ dependencies = [
   "cppython>=0.1.0",
 ]
 
+[tool.cppython]
+
 [tool.pdm]
 distribution = false