Add Python 1.3 decompilation ..

Reduced checking via "make check-short"

README.rst

@@ -11,8 +11,9 @@ Introduction
 ------------
 
 *uncompyle6* translates Python bytecode back into equivalent Python
-source code. It accepts bytecodes from Python version 1.4, and 2.1 to
+source code. It accepts bytecodes from Python version 1.3 to version
-3.7 or so, including PyPy bytecode and Dropbox's Python 2.5 bytecode.
+3.7, spanning over 22 years of Python releases. We include Dropbox's
+Python 2.5 bytecode and some PyPy bytecode.
 
 Why this?
 ---------

test/Makefile

@@ -22,7 +22,7 @@ COVER_DIR=../tmp/grammar-cover
 # Run short tests
 check-short:
 	@$(PYTHON) -V && PYTHON_VERSION=`$(PYTHON) -V 2>&1 | cut -d ' ' -f 2 | cut -d'.' -f1,2`; \
-	$(MAKE) check-bytecode
+	$(MAKE) check-bytecode-short
 
 # Run all tests
 check:
@@ -91,16 +91,31 @@ check-bytecode-3:
        --bytecode-3.1 --bytecode-3.2 --bytecode-3.3 \
        --bytecode-3.4 --bytecode-3.5 --bytecode-3.6 --bytecode-pypy3.2
 
-#: Check deparsing bytecode that works running Python 2 and Python 3
+#: Check deparsing on selected bytecode 3.x
+check-bytecode-3-short:
+	$(PYTHON) test_pythonlib.py \
+       --bytecode-3.4 --bytecode-3.5 --bytecode-3.6
+
+#: Check deparsing bytecode on all Python 2 and Python 3 versions
 check-bytecode: check-bytecode-3
 	$(PYTHON) test_pythonlib.py \
-	--bytecode-1.4 --bytecode-1.5 \
+	--bytecode-1.3 --bytecode-1.4 --bytecode-1.5 \
         --bytecode-2.2 --bytecode-2.3 --bytecode-2.4 \
 	--bytecode-2.1 --bytecode-2.2 --bytecode-2.3 --bytecode-2.4 \
         --bytecode-2.5 --bytecode-2.6 --bytecode-2.7 \
         --bytecode-pypy2.7
 
 
+#: Check deparsing bytecode on selected Python 2 and Python 3 versions
+check-bytecode-short: check-bytecode-3-short
+	$(PYTHON) test_pythonlib.py \
+        --bytecode-2.6 --bytecode-2.7 --bytecode-pypy2.7
+
+
+#: Check deparsing bytecode 1.3 only
+check-bytecode-1.3:
+	$(PYTHON) test_pythonlib.py --bytecode-1.3
+
 #: Check deparsing bytecode 1.4 only
 check-bytecode-1.4:
 	$(PYTHON) test_pythonlib.py --bytecode-1.4

test/test_pythonlib.py

@@ -78,7 +78,7 @@ for  vers in (2.7, 3.4, 3.5, 3.6):
     test_options[key] = (os.path.join(src_dir, pythonlib), PYOC, key, vers)
     pass
 
-for  vers in (1.4, 1.5,
+for  vers in (1.3, 1.4, 1.5,
               2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7,
               3.0, 3.1, 3.2, 3.3,
               3.4, 3.5, 3.6, 3.7, 'pypy3.2', 'pypy2.7'):

uncompyle6/parser.py

@@ -621,7 +621,13 @@ def get_python_parser(
 
     if version < 3.0:
         if version < 2.2:
-            if version == 1.4:
+            if version == 1.3:
+                import uncompyle6.parsers.parse13 as parse13
+                if compile_mode == 'exec':
+                    p = parse13.Python14Parser(debug_parser)
+                else:
+                    p = parse13.Python14ParserSingle(debug_parser)
+            elif version == 1.4:
                 import uncompyle6.parsers.parse14 as parse14
                 if compile_mode == 'exec':
                     p = parse14.Python14Parser(debug_parser)

uncompyle6/parsers/parse13.py

@@ -0,0 +1,49 @@
+#  Copyright (c) 2018 Rocky Bernstein
+
+from spark_parser import DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
+from uncompyle6.parser import PythonParserSingle
+from uncompyle6.parsers.parse14 import Python14Parser
+
+class Python13Parser(Python14Parser):
+
+    def p_misc13(self, args):
+        """
+        # Nothing here yet, but will need to add LOAD_GLOBALS
+        """
+
+    def __init__(self, debug_parser=PARSER_DEFAULT_DEBUG):
+        super(Python13Parser, self).__init__(debug_parser)
+        self.customized = {}
+
+    # def customize_grammar_rules(self, tokens, customize):
+    #     super(Python13Parser, self).customize_grammar_rules(tokens, customize)
+    #     self.remove_rules("""
+    #     whileelsestmt ::= SETUP_LOOP testexpr l_stmts_opt
+    #                       jb_pop
+    #                       POP_BLOCK else_suitel COME_FROM
+    #     """)
+    #     self.check_reduce['doc_junk'] = 'tokens'
+
+
+    # def reduce_is_invalid(self, rule, ast, tokens, first, last):
+    #     invalid = super(Python14Parser,
+    #                     self).reduce_is_invalid(rule, ast,
+    #                                             tokens, first, last)
+    #     if invalid or tokens is None:
+    #         return invalid
+    #     if rule[0] == 'doc_junk':
+    #         return not isinstance(tokens[first].pattr, str)
+
+
+
+class Python13ParserSingle(Python13Parser, PythonParserSingle):
+    pass
+
+if __name__ == '__main__':
+    # Check grammar
+    p = Python13Parser()
+    p.check_grammar()
+    p.dump_grammar()
+
+# local variables:
+# tab-width: 4

uncompyle6/parsers/parse14.py

@@ -8,12 +8,11 @@ class Python14Parser(Python15Parser):
 
     def p_misc14(self, args):
         """
-        # Nothing here yet, but will need to add UNARY_CALL, BINARY_CALL,
+        # Not much here yet, but will probably need to add UNARY_CALL, BINARY_CALL,
         # RAISE_EXCEPTION, BUILD_FUNCTION, UNPACK_ARG, UNPACK_VARARG, LOAD_LOCAL,
         # SET_FUNC_ARGS, and RESERVE_FAST
 
-        # FIXME: should check that this indeed around __doc__
+        # Not strictly needed, but tidies up output
-        # Possibly not strictly needed
         stmt     ::= doc_junk
         doc_junk ::= LOAD_CONST POP_TOP
 

uncompyle6/scanner.py

@@ -37,7 +37,7 @@ from xdis.util import code2num
 
 # The byte code versions we support.
 # Note: these all have to be floats
-PYTHON_VERSIONS = frozenset((1.4, 1.5,
+PYTHON_VERSIONS = frozenset((1.3, 1.4, 1.5,
                              2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7,
                              3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7))
 

uncompyle6/scanners/scanner13.py

@@ -0,0 +1,35 @@
+#  Copyright (c) 2018 by Rocky Bernstein
+"""
+Python 1.3 bytecode decompiler massaging.
+
+This massages tokenized 1.3 bytecode to make it more amenable for
+grammar parsing.
+"""
+
+import uncompyle6.scanners.scanner14 as scan
+# from uncompyle6.scanners.scanner26 import ingest as  ingest26
+
+# bytecode verification, verify(), uses JUMP_OPs from here
+from xdis.opcodes import opcode_13
+JUMP_OPS = opcode_13.JUMP_OPS
+
+# We base this off of 1.4 instead of the other way around
+# because we cleaned things up this way.
+# The history is that 2.7 support is the cleanest,
+# then from that we got 2.6 and so on.
+class Scanner13(scan.Scanner14):
+    def __init__(self, show_asm=False):
+        scan.Scanner14.__init__(self, show_asm)
+        self.opc = opcode_13
+        self.opname = opcode_13.opname
+        self.version = 1.3
+        return
+
+    # def ingest22(self, co, classname=None, code_objects={}, show_asm=None):
+    #     tokens, customize = self.parent_ingest(co, classname, code_objects, show_asm)
+    #     tokens = [t for t in tokens if t.kind != 'SET_LINENO']
+
+    #     # for t in tokens:
+    #     #     print(t)
+    #
+    #   return tokens, customize