update PAST node access pattern from Program instance (#423)

* update PAST node access pattern from Program instance
* update gt4py-stable version

spack/gt4py-stable/spack.yaml

@@ -1,10 +1,10 @@
 spack:
     specs:
-        - py-icon4py@main%gcc@9.3.0 ^py-gt4py@1.0.3.4%gcc@9.3.0
+        - py-icon4py@main%gcc@9.3.0 ^py-gt4py@1.0.3.5%gcc@9.3.0
     view: false
     concretizer:
         unify: true
     develop:
         py-icon4py:
-            spec: py-icon4py@main%gcc@9.3.0 ^py-gt4py@1.0.3.4%gcc@9.3.0
+            spec: py-icon4py@main%gcc@9.3.0 ^py-gt4py@1.0.3.5%gcc@9.3.0
             path: ../../

tools/src/icon4pytools/icon4pygen/metadata.py

@@ -92,11 +92,11 @@ def _ignore_subscript(node: past.Expr) -> past.Name:
 def _get_field_infos(fvprog: Program) -> dict[str, FieldInfo]:
     """Extract and format the in/out fields from a Program."""
     assert all(
-        is_list_of_names(body.args) for body in fvprog.past_node.body
+        is_list_of_names(body.args) for body in fvprog.past_stage.past_node.body
     ), "Found unsupported expression in input arguments."
-    input_arg_ids = set(arg.id for body in fvprog.past_node.body for arg in body.args)  # type: ignore[attr-defined] # Checked in the assert
+    input_arg_ids = set(arg.id for body in fvprog.past_stage.past_node.body for arg in body.args)  # type: ignore[attr-defined] # Checked in the assert
 
-    out_args = (body.kwargs["out"] for body in fvprog.past_node.body)
+    out_args = (body.kwargs["out"] for body in fvprog.past_stage.past_node.body)
     output_fields = []
     for out_arg in out_args:
         if isinstance(out_arg, past.TupleExpr):
@@ -112,7 +112,7 @@ def _get_field_infos(fvprog: Program) -> dict[str, FieldInfo]:
             inp=(field_node.id in input_arg_ids),
             out=(field_node.id in output_arg_ids),
         )
-        for field_node in fvprog.past_node.params
+        for field_node in fvprog.past_stage.past_node.params
         if field_node.id not in SPECIAL_DOMAIN_MARKERS
     }
 
@@ -122,8 +122,8 @@ def _get_field_infos(fvprog: Program) -> dict[str, FieldInfo]:
 def _get_domain_arg_ids(fvprog: Program) -> set[Optional[eve.concepts.SymbolRef]]:
     """Collect all argument names that are used within the 'domain' keyword argument."""
     domain_arg_ids = []
-    if "domain" in fvprog.past_node.body[0].kwargs.keys():
-        domain_arg = fvprog.past_node.body[0].kwargs["domain"]
+    if "domain" in fvprog.past_stage.past_node.body[0].kwargs.keys():
+        domain_arg = fvprog.past_stage.past_node.body[0].kwargs["domain"]
         assert isinstance(domain_arg, past.Dict)
         for arg in domain_arg.values_:
             for arg_elt in arg.elts:
@@ -207,7 +207,9 @@ def provide_neighbor_table(chain: str, is_global: bool) -> DummyConnectivity:
 
 def scan_for_offsets(fvprog: Program) -> list[eve.concepts.SymbolRef]:
     """Scan PAST node for offsets and return a set of all offsets."""
-    all_types = fvprog.past_node.pre_walk_values().if_isinstance(past.Symbol).getattr("type")
+    all_types = (
+        fvprog.past_stage.past_node.pre_walk_values().if_isinstance(past.Symbol).getattr("type")
+    )
     all_field_types = [
         symbol_type for symbol_type in all_types if isinstance(symbol_type, ts.FieldType)
     ]

tools/src/icon4pytools/py2fgen/parsing.py

@@ -95,7 +95,7 @@ def _get_gt4py_func_params(func: Program, type_hints: dict[str, str]) -> List[Fu
             dimensions=parse_type_spec(p.type)[0],
             py_type_hint=type_hints[p.id],
         )
-        for p in func.past_node.params
+        for p in func.past_stage.past_node.params
     ]