build(core): rewrite build_mocks with pathlib, add symlinks to ../mocks

core/mocks/generated/gc.pyi

@@ -0,0 +1 @@
+../gc.pyi

core/mocks/generated/micropython.pyi

@@ -0,0 +1 @@
+../micropython.pyi

core/mocks/generated/ubinascii.pyi

@@ -0,0 +1 @@
+../ubinascii.pyi

core/mocks/generated/uctypes.pyi

@@ -0,0 +1 @@
+../uctypes.pyi

core/mocks/generated/uio.pyi

@@ -0,0 +1 @@
+../uio.pyi

core/mocks/generated/uos.pyi

@@ -0,0 +1 @@
+../uos.pyi

core/mocks/generated/ustruct.pyi

@@ -0,0 +1 @@
+../ustruct.pyi

core/mocks/generated/utime.pyi

@@ -0,0 +1 @@
+../utime.pyi

core/mocks/generated/utimeq.pyi

@@ -0,0 +1 @@
+../utimeq.pyi

core/tools/build_mocks

@@ -6,10 +6,11 @@ import shutil
 import subprocess
 import sys
 import tempfile
+from pathlib import Path
 
-CORE_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
-EXTMOD_PATH = os.path.join(CORE_DIR, "embed", "extmod")
-MOCKS_PATH = os.path.join(CORE_DIR, "mocks", "generated")
+CORE_DIR = Path(__file__).parent.parent.resolve()
+EXTMOD_PATH = CORE_DIR / "embed" / "extmod"
+MOCKS_PATH = CORE_DIR / "mocks" / "generated"
 
 COMMENT_PREFIX = "/// "
 
@@ -59,22 +60,21 @@ def split_to_parts(line, mod_desc=None):
 def store_to_file(dest, parts):
     for package, line in parts:
         package = package.replace(".", "/")
-        dirpath = os.path.join(dest, os.path.dirname(package))
+        dirpath = dest / os.path.dirname(package)
         filename = os.path.basename(package) + ".pyi"
-        filepath = os.path.join(dirpath, filename)
+        filepath = dirpath / filename
 
-        os.makedirs(dirpath, exist_ok=True)
+        dirpath.mkdir(parents=True, exist_ok=True)
 
-        if os.path.isdir(os.path.join(dest, package)):
+        if (dest / package).is_dir():
             if not line.strip():
                 continue
             print(f"Package exists: {package}")
             print(f"You should set 'package:' in {line.strip()}")
             sys.exit(1)
 
-        if not os.path.exists(filepath):
-            with open(filepath, "a") as f:
-                f.write("from typing import *\n")
+        if not filepath.exists():
+            filepath.write_text("from typing import *\n")
 
         with open(filepath, "a") as f:
             f.write(line)
@@ -85,16 +85,15 @@ def build_module(mod_file, dest):
     global current_class
     global current_package
 
-    filename = os.path.basename(mod_file)
-    assert filename.startswith("mod")
-    assert filename.endswith(".c") or filename.endswith(".h")
+    assert mod_file.name.startswith("mod")
+    assert mod_file.suffix in (".c", ".h")
     # modfoobar-xyz.h -> foobar-xyz
-    name = filename[3:-2]
+    name = mod_file.name[3:-2]
 
     current_indent = 0
     current_class = None
     current_package = name.split("-")[0]
-    mod_desc = re.sub(r"^.*/embed/", "", mod_file)
+    mod_desc = str(mod_file.relative_to(CORE_DIR / "embed"))
 
     for l in open(mod_file):
         if not l.startswith(COMMENT_PREFIX):
@@ -104,16 +103,24 @@ def build_module(mod_file, dest):
         store_to_file(dest, split_to_parts(l, mod_desc))
 
 
-def build_directory(src, dest):
-    for modfile in sorted(glob.glob(os.path.join(src, "**", "mod*.[ch]"))):
+def place_symlinks(dest):
+    # make symlinks for the non-generated files
+    for pyi in MOCKS_PATH.glob("../*.pyi"):
+        dest_file = dest / pyi.name
+        dest_file.symlink_to(os.path.relpath(pyi.resolve(), dest))
+
+
+def build_directory(dest):
+    for modfile in sorted(EXTMOD_PATH.glob("**/mod*.[ch]")):
         build_module(modfile, dest)
+    place_symlinks(dest)
 
 
 def do_check():
     with tempfile.TemporaryDirectory() as tmpdir:
-        build_directory(EXTMOD_PATH, tmpdir)
+        build_directory(Path(tmpdir))
         diff_out = subprocess.run(
-            ["diff", "-ur", MOCKS_PATH, tmpdir],
+            ["diff", "-ur", str(MOCKS_PATH), tmpdir],
             stdout=subprocess.PIPE,
             universal_newlines=True,
         ).stdout
@@ -124,8 +131,7 @@ def do_check():
 
 def do_generate():
     shutil.rmtree(MOCKS_PATH)
-    build_directory(EXTMOD_PATH, MOCKS_PATH)
-
+    build_directory(MOCKS_PATH)
 
 if __name__ == "__main__":
     if len(sys.argv) > 1 and sys.argv[1] == "--check":