Apply var-spacing tests to vars files

src/ansiblelint/rules/var_spacing.py

@@ -4,12 +4,16 @@
 
 import re
 import sys
-from typing import Any, Dict, List, Optional, Union
+from typing import TYPE_CHECKING, Any, Dict, List, Optional, Union
 
 from ansiblelint.file_utils import Lintable
 from ansiblelint.rules import AnsibleLintRule
+from ansiblelint.utils import parse_yaml_from_file
 from ansiblelint.yaml_utils import nested_items_path
 
+if TYPE_CHECKING:
+    from ansiblelint.errors import MatchError
+
 
 class VariableHasSpacesRule(AnsibleLintRule):
     """Variables should have spaces before and after: {{ var_name }}."""
@@ -33,6 +37,31 @@ def matchtask(
                     return self.shortdesc.format(var_name=v)
         return False
 
+    def matchyaml(self, file: Lintable) -> List["MatchError"]:
+        """Return matches for variables defined in vars files."""
+        results: List["MatchError"] = []
+        meta_data: Dict[str, Any] = {}
+
+        if str(file.kind) == "vars":
+            meta_data = parse_yaml_from_file(str(file.path))
+            for k, v, path in nested_items_path(meta_data):
+                if isinstance(v, str):
+                    cleaned = self.exclude_json_re.sub("", v)
+                    if bool(self.bracket_regex.search(cleaned)):
+                        path_elem = [
+                            f"[{i}]" if isinstance(i, int) else i for i in path + [k]
+                        ]
+                        results.append(
+                            self.create_matcherror(
+                                filename=file,
+                                message=self.shortdesc.format(var_name=v)
+                                + f" The error is at ``.{'.'.join(path_elem)}``.",
+                            )
+                        )
+        else:
+            results.extend(super().matchyaml(file))
+        return results
+
 
 if "pytest" in sys.modules: