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rv/rvgen: extract node marker string to class constant

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Add a node_marker class constant to the Automata class to replace the
hardcoded "{node" string literal used throughout the DOT file parsing
logic. This follows the existing pattern established by the init_marker
and invalid_state_str class constants in the same class.

The "{node" string is used as a marker to identify node declaration
lines in DOT files during state variable extraction and cursor
positioning. Extracting it to a named constant improves code
maintainability and makes the marker's purpose explicit.

Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/20260223162407.147003-17-wander@redhat.com
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
This commit is contained in:
Wander Lairson Costa
2026-02-23 13:17:59 -03:00
committed by Gabriele Monaco
parent 8aee49c5a5
commit 2074723f51
1 changed files with 5 additions and 4 deletions
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9
tools/verification/rvgen/rvgen/automata.py
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@@ -44,6 +44,7 @@ class Automata:
invalid_state_str = "INVALID_STATE"
init_marker = "__init_"
node_marker = "{node"
# val can be numerical, uppercase (constant or macro), lowercase (parameter or function)
# only numerical values should have units
constraint_rule = re.compile(r"""
@@ -112,7 +113,7 @@ class Automata:
for cursor, line in enumerate(self.__dot_lines):
split_line = line.split()
if len(split_line) and split_line[0] == "{node":
if len(split_line) and split_line[0] == self.node_marker:
return cursor
raise AutomataError("Could not find a beginning state")
@@ -127,9 +128,9 @@ class Automata:
continue
if state == 0:
if line[0] == "{node":
if line[0] == self.node_marker:
state = 1
elif line[0] != "{node":
elif line[0] != self.node_marker:
break
else:
raise AutomataError("Could not find beginning event")
@@ -151,7 +152,7 @@ class Automata:
# process nodes
for line in islice(self.__dot_lines, cursor, None):
split_line = line.split()
if not split_line or split_line[0] != "{node":
if not split_line or split_line[0] != self.node_marker:
break
raw_state = split_line[-1]