]> git.madduck.net Git - etc/vim.git/blobdiff - src/black/handle_ipynb_magics.py

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Pin regex in docker to 2021.10.8 (GH-2579)
[etc/vim.git] / src / black / handle_ipynb_magics.py
index ad93c444efc98a7dfd2c12b54dc4cd834bb08b2f..f10eaed4f3ef950e6671c59e169ee967e78ca86e 100644 (file)
@@ -1,15 +1,19 @@
 """Functions to process IPython magics with."""
 """Functions to process IPython magics with."""
+
 from functools import lru_cache
 import dataclasses
 import ast
 from functools import lru_cache
 import dataclasses
 import ast
-from typing import Dict
+from typing import Dict, List, Tuple, Optional
 
 import secrets
 
 import secrets
-from typing import List, Tuple
+import sys
 import collections
 
 import collections
 
-from typing import Optional
-from typing_extensions import TypeGuard
+if sys.version_info >= (3, 10):
+    from typing import TypeGuard
+else:
+    from typing_extensions import TypeGuard
+
 from black.report import NothingChanged
 from black.output import out
 
 from black.report import NothingChanged
 from black.output import out
 
@@ -35,20 +39,21 @@ TOKENS_TO_IGNORE = frozenset(
 )
 NON_PYTHON_CELL_MAGICS = frozenset(
     (
 )
 NON_PYTHON_CELL_MAGICS = frozenset(
     (
-        "%%bash",
-        "%%html",
-        "%%javascript",
-        "%%js",
-        "%%latex",
-        "%%markdown",
-        "%%perl",
-        "%%ruby",
-        "%%script",
-        "%%sh",
-        "%%svg",
-        "%%writefile",
+        "bash",
+        "html",
+        "javascript",
+        "js",
+        "latex",
+        "markdown",
+        "perl",
+        "ruby",
+        "script",
+        "sh",
+        "svg",
+        "writefile",
     )
 )
     )
 )
+TOKEN_HEX = secrets.token_hex
 
 
 @dataclasses.dataclass(frozen=True)
 
 
 @dataclasses.dataclass(frozen=True)
@@ -184,10 +189,10 @@ def get_token(src: str, magic: str) -> str:
     """
     assert magic
     nbytes = max(len(magic) // 2 - 1, 1)
     """
     assert magic
     nbytes = max(len(magic) // 2 - 1, 1)
-    token = secrets.token_hex(nbytes)
+    token = TOKEN_HEX(nbytes)
     counter = 0
     counter = 0
-    while token in src:  # pragma: nocover
-        token = secrets.token_hex(nbytes)
+    while token in src:
+        token = TOKEN_HEX(nbytes)
         counter += 1
         if counter > 100:
             raise AssertionError(
         counter += 1
         if counter > 100:
             raise AssertionError(
@@ -225,10 +230,11 @@ def replace_cell_magics(src: str) -> Tuple[str, List[Replacement]]:
     cell_magic_finder.visit(tree)
     if cell_magic_finder.cell_magic is None:
         return src, replacements
     cell_magic_finder.visit(tree)
     if cell_magic_finder.cell_magic is None:
         return src, replacements
-    if cell_magic_finder.cell_magic.header.split()[0] in NON_PYTHON_CELL_MAGICS:
+    if cell_magic_finder.cell_magic.name in NON_PYTHON_CELL_MAGICS:
         raise NothingChanged
         raise NothingChanged
-    mask = get_token(src, cell_magic_finder.cell_magic.header)
-    replacements.append(Replacement(mask=mask, src=cell_magic_finder.cell_magic.header))
+    header = cell_magic_finder.cell_magic.header
+    mask = get_token(src, header)
+    replacements.append(Replacement(mask=mask, src=header))
     return f"{mask}\n{cell_magic_finder.cell_magic.body}", replacements
 
 
     return f"{mask}\n{cell_magic_finder.cell_magic.body}", replacements
 
 
@@ -306,11 +312,26 @@ def _is_ipython_magic(node: ast.expr) -> TypeGuard[ast.Attribute]:
     )
 
 
     )
 
 
+def _get_str_args(args: List[ast.expr]) -> List[str]:
+    str_args = []
+    for arg in args:
+        assert isinstance(arg, ast.Str)
+        str_args.append(arg.s)
+    return str_args
+
+
 @dataclasses.dataclass(frozen=True)
 class CellMagic:
 @dataclasses.dataclass(frozen=True)
 class CellMagic:
-    header: str
+    name: str
+    params: Optional[str]
     body: str
 
     body: str
 
+    @property
+    def header(self) -> str:
+        if self.params:
+            return f"%%{self.name} {self.params}"
+        return f"%%{self.name}"
+
 
 @dataclasses.dataclass
 class CellMagicFinder(ast.NodeVisitor):
 
 @dataclasses.dataclass
 class CellMagicFinder(ast.NodeVisitor):
@@ -340,14 +361,8 @@ class CellMagicFinder(ast.NodeVisitor):
             and _is_ipython_magic(node.value.func)
             and node.value.func.attr == "run_cell_magic"
         ):
             and _is_ipython_magic(node.value.func)
             and node.value.func.attr == "run_cell_magic"
         ):
-            args = []
-            for arg in node.value.args:
-                assert isinstance(arg, ast.Str)
-                args.append(arg.s)
-            header = f"%%{args[0]}"
-            if args[1]:
-                header += f" {args[1]}"
-            self.cell_magic = CellMagic(header=header, body=args[2])
+            args = _get_str_args(node.value.args)
+            self.cell_magic = CellMagic(name=args[0], params=args[1], body=args[2])
         self.generic_visit(node)
 
 
         self.generic_visit(node)
 
 
@@ -399,12 +414,8 @@ class MagicFinder(ast.NodeVisitor):
             and _is_ipython_magic(node.value.func)
             and node.value.func.attr == "getoutput"
         ):
             and _is_ipython_magic(node.value.func)
             and node.value.func.attr == "getoutput"
         ):
-            args = []
-            for arg in node.value.args:
-                assert isinstance(arg, ast.Str)
-                args.append(arg.s)
-            assert args
-            src = f"!{args[0]}"
+            (arg,) = _get_str_args(node.value.args)
+            src = f"!{arg}"
             self.magics[node.value.lineno].append(
                 OffsetAndMagic(node.value.col_offset, src)
             )
             self.magics[node.value.lineno].append(
                 OffsetAndMagic(node.value.col_offset, src)
             )
@@ -430,11 +441,7 @@ class MagicFinder(ast.NodeVisitor):
         and we look for instances of any of the latter.
         """
         if isinstance(node.value, ast.Call) and _is_ipython_magic(node.value.func):
         and we look for instances of any of the latter.
         """
         if isinstance(node.value, ast.Call) and _is_ipython_magic(node.value.func):
-            args = []
-            for arg in node.value.args:
-                assert isinstance(arg, ast.Str)
-                args.append(arg.s)
-            assert args
+            args = _get_str_args(node.value.args)
             if node.value.func.attr == "run_line_magic":
                 if args[0] == "pinfo":
                     src = f"?{args[1]}"
             if node.value.func.attr == "run_line_magic":
                 if args[0] == "pinfo":
                     src = f"?{args[1]}"