Functions in automata.py, dot2c.py and dot2k.py don't have type
annotations and it can get complicated to remember how to use them.

Add minimal type annotations.

Signed-off-by: Gabriele Monaco <gmon...@redhat.com>
---
 tools/verification/rvgen/rvgen/automata.py | 18 ++++++-------
 tools/verification/rvgen/rvgen/dot2c.py    | 30 +++++++++++-----------
 tools/verification/rvgen/rvgen/dot2k.py    | 18 ++++++-------
 3 files changed, 33 insertions(+), 33 deletions(-)

diff --git a/tools/verification/rvgen/rvgen/automata.py 
b/tools/verification/rvgen/rvgen/automata.py
index d9a3fe2b74bf..76d7a3cfaec6 100644
--- a/tools/verification/rvgen/rvgen/automata.py
+++ b/tools/verification/rvgen/rvgen/automata.py
@@ -28,7 +28,7 @@ class Automata:
         self.function = self.__create_matrix()
         self.events_start, self.events_start_run = self.__store_init_events()
 
-    def __get_model_name(self):
+    def __get_model_name(self) -> str:
         basename = ntpath.basename(self.__dot_path)
         if not basename.endswith(".dot") and not basename.endswith(".gv"):
             print("not a dot file")
@@ -40,7 +40,7 @@ class Automata:
 
         return model_name
 
-    def __open_dot(self):
+    def __open_dot(self) -> list[str]:
         cursor = 0
         dot_lines = []
         try:
@@ -60,13 +60,13 @@ class Automata:
             cursor += 1
         return dot_lines
 
-    def __get_cursor_begin_states(self):
+    def __get_cursor_begin_states(self) -> int:
         cursor = 0
         while self.__dot_lines[cursor].split()[0] != "{node":
             cursor += 1
         return cursor
 
-    def __get_cursor_begin_events(self):
+    def __get_cursor_begin_events(self) -> int:
         cursor = 0
         while self.__dot_lines[cursor].split()[0] != "{node":
             cursor += 1
@@ -76,7 +76,7 @@ class Automata:
         cursor += 1
         return cursor
 
-    def __get_state_variables(self):
+    def __get_state_variables(self) -> tuple[list[str], str, list[str]]:
         # wait for node declaration
         states = []
         final_states = []
@@ -116,7 +116,7 @@ class Automata:
 
         return states, initial_state, final_states
 
-    def __get_event_variables(self):
+    def __get_event_variables(self) -> tuple[list[str], list[str]]:
         # here we are at the begin of transitions, take a note, we will return 
later.
         cursor = self.__get_cursor_begin_events()
 
@@ -174,7 +174,7 @@ class Automata:
 
         return matrix
 
-    def __store_init_events(self):
+    def __store_init_events(self) -> tuple[list[bool], list[bool]]:
         events_start = [False] * len(self.events)
         events_start_run = [False] * len(self.events)
         for i, _ in enumerate(self.events):
@@ -196,10 +196,10 @@ class Automata:
                 events_start_run[i] = True
         return events_start, events_start_run
 
-    def is_start_event(self, event):
+    def is_start_event(self, event: str) -> bool:
         return self.events_start[self.events.index(event)]
 
-    def is_start_run_event(self, event):
+    def is_start_run_event(self, event: str) -> bool:
         # prefer handle_start_event if there
         if any(self.events_start):
             return False
diff --git a/tools/verification/rvgen/rvgen/dot2c.py 
b/tools/verification/rvgen/rvgen/dot2c.py
index b9b6f14cc536..e92567045c9c 100644
--- a/tools/verification/rvgen/rvgen/dot2c.py
+++ b/tools/verification/rvgen/rvgen/dot2c.py
@@ -57,7 +57,7 @@ class Dot2c(Automata):
 
         return buff
 
-    def __get_enum_events_content(self):
+    def __get_enum_events_content(self) -> list[str]:
         buff = []
         first = True
         for event in self.events:
@@ -97,7 +97,7 @@ class Dot2c(Automata):
 
         return min_type
 
-    def format_automaton_definition(self):
+    def format_automaton_definition(self) -> list[str]:
         min_type = self.get_minimun_type()
         buff = []
         buff.append("struct %s {" % self.struct_automaton_def)
@@ -109,12 +109,12 @@ class Dot2c(Automata):
         buff.append("};\n")
         return buff
 
-    def format_aut_init_header(self):
+    def format_aut_init_header(self) -> list[str]:
         buff = []
         buff.append("static const struct %s %s = {" % 
(self.struct_automaton_def, self.var_automaton_def))
         return buff
 
-    def __get_string_vector_per_line_content(self, buff):
+    def __get_string_vector_per_line_content(self, buff: list[str]) -> str:
         first = True
         string = ""
         for entry in buff:
@@ -140,7 +140,7 @@ class Dot2c(Automata):
         buff.append("\t},")
         return buff
 
-    def format_aut_init_states_string(self):
+    def format_aut_init_states_string(self) -> list[str]:
         buff = []
         buff.append("\t.state_names = {")
         buff.append(self.get_aut_init_states_string())
@@ -152,7 +152,7 @@ class Dot2c(Automata):
         max_state_name = max(self.states, key = len).__len__()
         return max(max_state_name, self.invalid_state_str.__len__())
 
-    def get_aut_init_function(self):
+    def get_aut_init_function(self) -> str:
         nr_states = self.states.__len__()
         nr_events = self.events.__len__()
         buff = []
@@ -180,7 +180,7 @@ class Dot2c(Automata):
 
         return self.__buff_to_string(buff)
 
-    def format_aut_init_function(self):
+    def format_aut_init_function(self) -> list[str]:
         buff = []
         buff.append("\t.function = {")
         buff.append(self.get_aut_init_function())
@@ -188,17 +188,17 @@ class Dot2c(Automata):
 
         return buff
 
-    def get_aut_init_initial_state(self):
+    def get_aut_init_initial_state(self) -> str:
         return self.initial_state
 
-    def format_aut_init_initial_state(self):
+    def format_aut_init_initial_state(self) -> list[str]:
         buff = []
         initial_state = self.get_aut_init_initial_state()
         buff.append("\t.initial_state = " + initial_state + self.enum_suffix + 
",")
 
         return buff
 
-    def get_aut_init_final_states(self):
+    def get_aut_init_final_states(self) -> str:
         line = ""
         first = True
         for state in self.states:
@@ -213,29 +213,29 @@ class Dot2c(Automata):
                 line = line + '0'
         return line
 
-    def format_aut_init_final_states(self):
+    def format_aut_init_final_states(self) -> list[str]:
        buff = []
        buff.append("\t.final_states = { %s }," % 
self.get_aut_init_final_states())
 
        return buff
 
-    def __get_automaton_initialization_footer_string(self):
+    def __get_automaton_initialization_footer_string(self) -> str:
         footer = "};\n"
         return footer
 
-    def format_aut_init_footer(self):
+    def format_aut_init_footer(self) -> list[str]:
         buff = []
         buff.append(self.__get_automaton_initialization_footer_string())
 
         return buff
 
-    def format_invalid_state(self):
+    def format_invalid_state(self) -> list[str]:
         buff = []
         buff.append("#define %s state_max%s\n" % (self.invalid_state_str, 
self.enum_suffix))
 
         return buff
 
-    def format_model(self):
+    def format_model(self) -> list[str]:
         buff = []
         buff += self.format_states_enum()
         buff += self.format_invalid_state()
diff --git a/tools/verification/rvgen/rvgen/dot2k.py 
b/tools/verification/rvgen/rvgen/dot2k.py
index d618a842fc52..a48e32c4ca73 100644
--- a/tools/verification/rvgen/rvgen/dot2k.py
+++ b/tools/verification/rvgen/rvgen/dot2k.py
@@ -21,10 +21,10 @@ class dot2k(Monitor, Dot2c):
         Dot2c.__init__(self, file_path, extra_params.get("model_name"))
         self.enum_suffix = "_%s" % self.name
 
-    def fill_monitor_type(self):
+    def fill_monitor_type(self) -> str:
         return self.monitor_type.upper()
 
-    def fill_tracepoint_handlers_skel(self):
+    def fill_tracepoint_handlers_skel(self) -> str:
         buff = []
         for event in self.events:
             buff.append("static void handle_%s(void *data, /* XXX: fill header 
*/)" % event)
@@ -45,19 +45,19 @@ class dot2k(Monitor, Dot2c):
             buff.append("")
         return '\n'.join(buff)
 
-    def fill_tracepoint_attach_probe(self):
+    def fill_tracepoint_attach_probe(self) -> str:
         buff = []
         for event in self.events:
             buff.append("\trv_attach_trace_probe(\"%s\", /* XXX: tracepoint 
*/, handle_%s);" % (self.name, event))
         return '\n'.join(buff)
 
-    def fill_tracepoint_detach_helper(self):
+    def fill_tracepoint_detach_helper(self) -> str:
         buff = []
         for event in self.events:
             buff.append("\trv_detach_trace_probe(\"%s\", /* XXX: tracepoint 
*/, handle_%s);" % (self.name, event))
         return '\n'.join(buff)
 
-    def fill_model_h_header(self):
+    def fill_model_h_header(self) -> list[str]:
         buff = []
         buff.append("/* SPDX-License-Identifier: GPL-2.0 */")
         buff.append("/*")
@@ -71,7 +71,7 @@ class dot2k(Monitor, Dot2c):
 
         return buff
 
-    def fill_model_h(self):
+    def fill_model_h(self) -> str:
         #
         # Adjust the definition names
         #
@@ -85,17 +85,17 @@ class dot2k(Monitor, Dot2c):
 
         return '\n'.join(buff)
 
-    def fill_monitor_class_type(self):
+    def fill_monitor_class_type(self) -> str:
         if self.monitor_type == "per_task":
             return "DA_MON_EVENTS_ID"
         return "DA_MON_EVENTS_IMPLICIT"
 
-    def fill_monitor_class(self):
+    def fill_monitor_class(self) -> str:
         if self.monitor_type == "per_task":
             return "da_monitor_id"
         return "da_monitor"
 
-    def fill_tracepoint_args_skel(self, tp_type):
+    def fill_tracepoint_args_skel(self, tp_type: str) -> str:
         buff = []
         tp_args_event = [
                 ("char *", "state"),
-- 
2.50.1


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