From 494b6bca8acefb1a93f94863ba907dd9ff0f5630 Mon Sep 17 00:00:00 2001
From: yogendra-17 <f20190287@goa.bits-pilani.ac.in>
Date: Sat, 7 Mar 2026 16:00:32 +0530
Subject: [PATCH 1/2] handle unsupported types

---
 pyproject.toml                |  2 +-
 src/arx/parser.py             | 17 +++++++++++++++--
 tests/test_parser_branches.py | 16 +++++++++++++++-
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 2745151..b4db6eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ readme = "docs/index.md"
 authors = [
   {name = "Ivan Ogasawara", email = "ivan.ogasawara@gmail.com"}
 ]
-license = "Apache Software License 2.0"
+license = "Apache-2.0"
 requires-python = ">=3.10,<4"
 dependencies = [
   "pyyaml >=4",
diff --git a/src/arx/parser.py b/src/arx/parser.py
index 1060322..dd069bf 100644
--- a/src/arx/parser.py
+++ b/src/arx/parser.py
@@ -682,8 +682,21 @@ def _default_value_for_type(self, data_type: astx.DataType) -> astx.Expr:
             return astx.LiteralString("")
         if isinstance(data_type, astx.NoneType):
             return astx.LiteralNone()
-        return astx.LiteralInt32(0)
-
+        if isinstance(data_type, astx.DateTime):
+            return astx.LiteralDateTime("1970-01-01T00:00:00")
+        if isinstance(data_type, astx.Timestamp):
+            return astx.LiteralTimestamp("1970-01-01T00:00:00")
+        if isinstance(data_type, astx.Date):
+            return astx.LiteralDate("1970-01-01")
+        if isinstance(data_type, astx.Time):
+            return astx.LiteralTime("00:00:00")
+
+        raise ParserException(
+            f"Parser: No default value defined for type "
+            f"'{type(data_type).__name__}'. "
+            f"An explicit initializer is required."
+        )
+    
     def parse_type(self) -> astx.DataType:
         """
         title: Parse a type annotation.
diff --git a/tests/test_parser_branches.py b/tests/test_parser_branches.py
index 46a9ceb..d2ebecd 100644
--- a/tests/test_parser_branches.py
+++ b/tests/test_parser_branches.py
@@ -206,9 +206,23 @@ def test_parse_type_list_and_default_values() -> None:
     )
     assert isinstance(
         parser._default_value_for_type(astx.DateTime()),
-        astx.LiteralInt32,
+        astx.LiteralDateTime
+    )
+    assert isinstance(
+        parser._default_value_for_type(astx.Timestamp()),
+        astx.LiteralTimestamp
+    )
+    assert isinstance(
+        parser._default_value_for_type(astx.Date()),
+        astx.LiteralDate
+    )
+    assert isinstance(
+        parser._default_value_for_type(astx.Time()), 
+        astx.LiteralTime
     )
 
+    with pytest.raises(ParserException):
+        parser._default_value_for_type(astx.ListType([astx.Int32()]))
 
 def test_parse_unary_and_prototype_error_paths() -> None:
     """

From 3d4aab5733a0f7e99efcdb1da57b2c2fa9af3669 Mon Sep 17 00:00:00 2001
From: yogendra-17 <f20190287@goa.bits-pilani.ac.in>
Date: Sun, 8 Mar 2026 21:20:48 +0530
Subject: [PATCH 2/2] fix lint issues

---
 src/arx/parser.py             |  2 +-
 tests/test_parser_branches.py | 13 +++++--------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/src/arx/parser.py b/src/arx/parser.py
index dd069bf..46bbfbf 100644
--- a/src/arx/parser.py
+++ b/src/arx/parser.py
@@ -696,7 +696,7 @@ def _default_value_for_type(self, data_type: astx.DataType) -> astx.Expr:
             f"'{type(data_type).__name__}'. "
             f"An explicit initializer is required."
         )
-    
+
     def parse_type(self) -> astx.DataType:
         """
         title: Parse a type annotation.
diff --git a/tests/test_parser_branches.py b/tests/test_parser_branches.py
index d2ebecd..e621a1d 100644
--- a/tests/test_parser_branches.py
+++ b/tests/test_parser_branches.py
@@ -205,25 +205,22 @@ def test_parse_type_list_and_default_values() -> None:
         astx.LiteralNone,
     )
     assert isinstance(
-        parser._default_value_for_type(astx.DateTime()),
-        astx.LiteralDateTime
+        parser._default_value_for_type(astx.DateTime()), astx.LiteralDateTime
     )
     assert isinstance(
-        parser._default_value_for_type(astx.Timestamp()),
-        astx.LiteralTimestamp
+        parser._default_value_for_type(astx.Timestamp()), astx.LiteralTimestamp
     )
     assert isinstance(
-        parser._default_value_for_type(astx.Date()),
-        astx.LiteralDate
+        parser._default_value_for_type(astx.Date()), astx.LiteralDate
     )
     assert isinstance(
-        parser._default_value_for_type(astx.Time()), 
-        astx.LiteralTime
+        parser._default_value_for_type(astx.Time()), astx.LiteralTime
     )
 
     with pytest.raises(ParserException):
         parser._default_value_for_type(astx.ListType([astx.Int32()]))
 
+
 def test_parse_unary_and_prototype_error_paths() -> None:
     """
     title: Parse unary expressions and prototype errors.