make pytex file more flexible

PyTeX/build/pytex_file/pytex_file.py

@@ -3,12 +3,18 @@ from pathlib import Path
 from .enums import PyTeXFileType
 from PyTeX.format.formatterif import FormatterIF
 from PyTeX.build.paths import RelativePath
+from ...format.enums import TeXType
 
 
 class PyTeXSourceFile:
-    def __init__(self):
-        self._pytex_file_type: PyTeXFileType = None
+    def __init__(
+            self,
+            relative_path: RelativePath,
+            formatter: Optional[FormatterIF] = None,
+            pytex_file_type: Optional[PyTeXFileType] = None
+    ):
         self._relative_path: RelativePath = None
+        self._pytex_file_type: PyTeXFileType = None
         self._formatter: FormatterIF = None
 
     @property
@@ -28,6 +34,14 @@ class PyTeXSourceFile:
         ]
         return files
 
+    @property
+    def formatter(self) -> FormatterIF:
+        return self._formatter
+
+    @formatter.setter
+    def formatter(self, formatter):
+        self._formatter = formatter
+
     def format(self, target_root: Union[Path, RelativePath]) -> Optional[List[Tuple[RelativePath, Dict]]]:
         try:
             configs = self._formatter.format(