Show token number in parser error listing...

But only if -g is given

__pkginfo__.py

@@ -23,7 +23,7 @@
 
 # Things that change more often go here.
 copyright   = """
-Copyright (C) 2015-2019 Rocky Bernstein <rb@dustyfeet.com>.
+Copyright (C) 2015-2020 Rocky Bernstein <rb@dustyfeet.com>.
 """
 
 classifiers =  ["Development Status :: 5 - Production/Stable",

pytest/testdata/if-2.7.right

@@ -1,10 +1,10 @@
 # Python 2.7
 # Embedded file name: simple_source/branching/05_if.py
 
-   6         0  LOAD_NAME             0  'True'
+ L.   6         0  LOAD_NAME             0  'True'
                 3  POP_JUMP_IF_FALSE    15  'to 15'
 
-   7         6  LOAD_NAME             1  'False'
+ L.   7         6  LOAD_NAME             1  'False'
                 9  STORE_NAME            2  'b'
                12  JUMP_FORWARD          0  'to 15'
              15_0  COME_FROM            12  '12'

pytest/testdata/ifelse-2.7.right

@@ -1,14 +1,14 @@
 # Python 2.7
 # Embedded file name: simple_source/branching/05_ifelse.py
 
-   3         0  LOAD_NAME             0  'True'
+ L.   3         0  LOAD_NAME             0  'True'
                 3  POP_JUMP_IF_FALSE    15  'to 15'
 
-   4         6  LOAD_CONST               1
+ L.   4         6  LOAD_CONST               1
                 9  STORE_NAME            1  'b'
                12  JUMP_FORWARD          6  'to 21'
 
-   6        15  LOAD_CONST               2
+ L.   6        15  LOAD_CONST               2
                18  STORE_NAME            2  'd'
              21_0  COME_FROM            12  '12'
                21  LOAD_CONST               None

uncompyle6/scanners/tok.py

@@ -120,11 +120,18 @@ class Token:
     def __str__(self):
         return self.format(line_prefix="")
 
-    def format(self, line_prefix=""):
+    def format(self, line_prefix="", token_num=None):
+        if token_num is not None:
             prefix = (
-            "\n%s%4d  " % (line_prefix, self.linestart)
+                "\n(%03d)%s L.%4d  " % (token_num, line_prefix, self.linestart)
                 if self.linestart
-            else (" " * (6 + len(line_prefix)))
+                else ("(%03d)%s" % (token_num, " " * (9 + len(line_prefix))))
+            )
+        else:
+            prefix = (
+                "\n%s L.%4d  " % (line_prefix, self.linestart)
+                if self.linestart
+                else (" " * (9 + len(line_prefix)))
             )
         offset_opname = "%8s  %-17s" % (self.offset, self.kind)
 

uncompyle6/semantics/Makefile

@@ -1,7 +0,0 @@
-# Whatever it is you want to do, it should be forwarded to the
-# to top-level irectories
-PHONY=check all
-all: check
-
-%:
-	$(MAKE) -C ../.. $@

uncompyle6/semantics/parser_error.py

@@ -1,4 +1,4 @@
-#  Copyright (c) 2018 by Rocky Bernstein
+#  Copyright (c) 2018, 2020 by Rocky Bernstein
 #
 #  This program is free software: you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
@@ -13,13 +13,19 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import uncompyle6.parser as python_parser
+
+
 class ParserError(python_parser.ParserError):
-    def __init__(self, error, tokens):
+    def __init__(self, error, tokens, debug):
         self.error = error  # previous exception
         self.tokens = tokens
+        self.debug = debug
 
     def __str__(self):
-        lines = ['--- This code section failed: ---']
+        lines = ["--- This code section failed: ---"]
-        lines.extend([str(i) for i in self.tokens])
+        if self.debug:
-        lines.extend( ['', str(self.error)] )
+            lines.extend([t.format(token_num=i + 1) for i, t in enumerate(self.tokens)])
-        return '\n'.join(lines)
+        else:
+            lines.extend([t.format() for t in self.tokens])
+        lines.extend(["", str(self.error)])
+        return "\n".join(lines)

uncompyle6/semantics/pysource.py

@@ -2480,7 +2480,7 @@ class SourceWalker(GenericASTTraversal, object):
             ast = python_parser.parse(self.p, tokens, customize)
             self.p.insts = p_insts
         except (python_parser.ParserError, AssertionError) as e:
-            raise ParserError(e, tokens)
+            raise ParserError(e, tokens, self.p.debug['reduce'])
 
         checker(ast, False, self.ast_errors)