refactor(gen-features): use Rust instead of Python

Added support for /stm32-metapac

stm32-metapac/gen_features.py

@@ -1,47 +0,0 @@
-import xmltodict
-import yaml
-import re
-import json
-import os
-import re
-import toml
-from collections import OrderedDict
-from glob import glob
-
-try:
-    from yaml import CSafeLoader as SafeLoader
-except ImportError:
-    from yaml import SafeLoader
-
-abspath = os.path.abspath(__file__)
-dname = os.path.dirname(abspath)
-os.chdir(dname)
-
-# ======= load chip list
-
-features = {}
-
-for f in sorted(glob('../stm32-data/data/chips/*.yaml')):
-    # Use the filename to get the chip name. Ultra fast, we don't have to read YAML!
-    name = os.path.splitext(os.path.basename(f))[0].lower()
-    with open(f, 'r') as f:
-        chip = yaml.load(f, Loader=SafeLoader)
-    if len(chip['cores']) > 1:
-        for core in chip['cores']:
-            features[name + "_" + core['name']] = []
-    else:
-        features[name] = []
-
-# ========= Update Cargo features
-
-SEPARATOR_START = '# BEGIN GENERATED FEATURES\n'
-SEPARATOR_END = '# END GENERATED FEATURES\n'
-HELP = '# Generated by gen_features.py. DO NOT EDIT.\n'
-with open('Cargo.toml', 'r') as f:
-    cargo = f.read()
-before, cargo = cargo.split(SEPARATOR_START, maxsplit=1)
-_, after = cargo.split(SEPARATOR_END, maxsplit=1)
-cargo = before + SEPARATOR_START + HELP + \
-    toml.dumps(features) + SEPARATOR_END + after
-with open('Cargo.toml', 'w') as f:
-    f.write(cargo)