add nothing_formatter.py

PyTeX/format/nothing_formatter.py

@@ -0,0 +1,25 @@
+from .formatting_config import FormattingConfig
+from .pytex_formatter import PyTeXFormatter
+from pathlib import Path
+import shutil
+
+from typing import List, Tuple
+
+
+class NothingFormatter(PyTeXFormatter):
+    """
+    Class that will represent a source file that
+    should not be formatted.
+
+    This is modeled by not having any output files,
+    so the builder will never consider building this file
+    """
+
+    def output_files(self) -> List[str]:
+        return []
+
+    def format(self, build_dir: Path, overwrite: bool = False) -> List[Tuple[str, FormattingConfig]]:
+        raise NotImplementedError
+
+    def dependencies(self) -> List[str]:
+        return []