[llvm-branch-commits] [libcxx] [libc++] Adds a FTM v2 data file generator. (PR #134555)

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:warning: Python code formatter, darker found issues in your code. :warning:

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``````````bash
darker --check --diff -r HEAD~1...HEAD libcxx/utils/generate_feature_test_macro_components.py
``````````

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View the diff from darker here.
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``````````diff
--- generate_feature_test_macro_components.py	2025-04-06 17:54:24.000000 +0000
+++ generate_feature_test_macro_components.py	2025-04-06 17:58:47.303988 +0000
@@ -1958,40 +1958,52 @@
 
     table_doc_path = os.path.join(docs_path, "FeatureTestMacroTable.rst")
     with open(table_doc_path, "w", newline="\n") as f:
         f.write(doc_str)
 
+
 def get_values(tc) -> str:
     implemented = True if not "unimplemented" in tc.keys() else not tc["unimplemented"]
 
-    return ",\n".join("""\
+    return ",\n".join(
+        """\
       "{std}": {{
         "{value}": [
           {{
             "implemented": {implemented}
           }}
         ]
       }}\
-""".format(std=key, value=tc["values"][key], implemented="true" if implemented else "false") for key in tc["values"].keys())
+""".format(
+            std=key,
+            value=tc["values"][key],
+            implemented="true" if implemented else "false",
+        )
+        for key in tc["values"].keys()
+    )
+
 
 def get_headers(tc) -> str:
     headers = tc["headers"]
     headers.remove("version")
-    return f'{headers}'.replace("'", '"')
+    return f"{headers}".replace("'", '"')
+
 
 def get_test_suite_guard(tc) -> str:
     if not "test_suite_guard" in tc.keys():
         return ""
     return f',\n    "test_suite_guard": "{tc["test_suite_guard"]}"'
 
+
 def get_libcxx_guard(tc) -> str:
     if not "libcxx_guard" in tc.keys():
         return ""
     return f',\n    "libcxx_guard": "{tc["libcxx_guard"]}"'
 
+
 def get_ftm_json(tc) -> str:
-    data="""\
+    data = """\
   {{
     "name": "{ftm}",
     "values": {{
 {values}
     }},
@@ -2014,11 +2026,13 @@
 def produce_json(file: os.path) -> None:
     contents = """\
 [
 {data}
 ]
-""".format(data=get_json())
+""".format(
+        data=get_json()
+    )
     with open(file, "w", newline="\n") as f:
         f.write(contents)
 
 
 Std = NewType("Std", str)  # Standard version number

``````````

</details>


https://github.com/llvm/llvm-project/pull/134555