Migrate from setup.py and setup.cfg to pyproject.toml

src/django_migration_linter/sql_analyser/sqlite.py

@@ -0,0 +1,56 @@
+from __future__ import annotations
+
+import re
+
+from .base import BaseAnalyser, Check, CheckMode, CheckType
+
+
+class SqliteAnalyser(BaseAnalyser):
+    migration_checks: list[Check] = [
+        Check(
+            code="RENAME_TABLE",
+            fn=lambda sql, **kw: re.search("ALTER TABLE .* RENAME TO", sql)
+            and "__old" not in sql
+            and "new__" not in sql,
+            message="RENAMING tables",
+            mode=CheckMode.ONE_LINER,
+            type=CheckType.ERROR,
+        ),
+        Check(
+            code="DROP_TABLE",
+            # TODO: improve to detect that the table names overlap
+            fn=lambda sql_statements, **kw: any(
+                sql.startswith("DROP TABLE") for sql in sql_statements
+            )
+            and not any(sql.startswith("CREATE TABLE") for sql in sql_statements),
+            message="DROPPING table",
+            mode=CheckMode.TRANSACTION,
+            type=CheckType.ERROR,
+        ),
+        Check(
+            code="NOT_NULL",
+            fn=lambda sql_statements, **kw: any(
+                re.search("NOT NULL(?! PRIMARY)(?! DEFAULT)", sql)
+                for sql in sql_statements
+            )
+            and any(
+                re.search("ALTER TABLE .* RENAME TO", sql)
+                and ("__old" in sql or "new__" in sql)
+                for sql in sql_statements
+            ),
+            message="NOT NULL constraint on columns",
+            mode=CheckMode.TRANSACTION,
+            type=CheckType.ERROR,
+        ),
+    ]
+
+    @staticmethod
+    def detect_table(sql: list[str] | str) -> str | None:
+        if isinstance(sql, str):
+            regex_result = re.search("TABLE [`\"'](.*?)[`\"']", sql, re.IGNORECASE)
+            if regex_result:
+                return regex_result.group(1)
+            regex_result = re.search("ON [`\"'](.*?)[`\"']", sql, re.IGNORECASE)
+            if regex_result:
+                return regex_result.group(1)
+        return None