From 684205ba2bb172999df35c9d02b4f320709c624c Mon Sep 17 00:00:00 2001
From: pompolic <pompolic@special-circumstanc.es>
Date: Thu, 27 Oct 2022 17:15:14 +0200
Subject: [PATCH] (WIP) fix for one cause of "Unexpected node path length"
---
gdb-port/top-level-parse.py | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/gdb-port/top-level-parse.py b/gdb-port/top-level-parse.py
index 47d9ecd..790fc58 100644
--- a/gdb-port/top-level-parse.py
+++ b/gdb-port/top-level-parse.py
@@ -4,6 +4,7 @@ class TopLevelParse:
self.parser_objs = {}
self.input_stream_indices = IndexTree() # TODO: turn this into a tree
self.input_index_tree_path = [0]
+ self.index_tree_stack = []
self.current_parse_depth = 0 # Used by the AST handling code.
self.starting_input_index = []
self.input_token_map = {}
@@ -42,6 +43,8 @@ class TopLevelParse:
parser_stack = ParserStack(None, None)
self.parser_stacks.append(parser_stack)
self.current_parse_depth = -1 # entering h_do_parse increments this by 1. To have it 0-indexed, it needs to be initialized to -1
+ if self.input_stream_indices:
+ self.index_tree_stack.append(self.input_stream_indices)
return 0
# TODO: arena parameter is useless
@@ -95,6 +98,8 @@ class TopLevelParse:
self.current_parse_depth = -1 # Parser stack is now empty (i.e. this was the 'topmost' h_parse() invocation
else:
self.current_parse_depth = len(self.peek_parserstack().p_stack)-1 # This happens when a h_parse called from a semantic action or HContinuation returns (e. g. filters in pdf)
+ print("popping index tree stack")
+ self.input_stream_indices = self.index_tree_stack.pop()
# Memoize the parser object for this particular address, then push it on the stack
# Returns the parser object we just initalized (or the one already existing)
@@ -173,6 +178,10 @@ class TopLevelParse:
self.input_index_tree_path.append(0)
else:
#print("len(self.input_index_tree_path):", len(self.input_index_tree_path), "self.current_parse_depth:", self.current_parse_depth)
+ #gdb.execute("tbreak")
+ print("parse depth + 1:", self.current_parse_depth+1, "tree path length:", len(self.input_index_tree_path))
+ print("Unexpected node path length at parser:", str(self.peek_parser()))
+ print("index tree stack", self.index_tree_stack)
raise RuntimeError("Unexpected node path length")
diff = (self.current_parse_depth+1) - len(self.starting_input_index)
--
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