Add a few tests from Python 2.7 standard library

test/ok_lib2.7/dircache.py

@@ -0,0 +1,41 @@
+"""Read and cache directory listings.
+
+The listdir() routine returns a sorted list of the files in a directory,
+using a cache to avoid reading the directory more often than necessary.
+The annotate() routine appends slashes to directories."""
+from warnings import warnpy3k
+warnpy3k("the dircache module has been removed in Python 3.0", stacklevel=2)
+del warnpy3k
+
+import os
+
+__all__ = ["listdir", "opendir", "annotate", "reset"]
+
+cache = {}
+
+def reset():
+    """Reset the cache completely."""
+    global cache
+    cache = {}
+
+def listdir(path):
+    """List directory contents, using cache."""
+    try:
+        cached_mtime, list = cache[path]
+        del cache[path]
+    except KeyError:
+        cached_mtime, list = -1, []
+    mtime = os.stat(path).st_mtime
+    if mtime != cached_mtime:
+        list = os.listdir(path)
+        list.sort()
+    cache[path] = mtime, list
+    return list
+
+opendir = listdir # XXX backward compatibility
+
+def annotate(head, list):
+    """Add '/' suffixes to directories."""
+    for i in range(len(list)):
+        if os.path.isdir(os.path.join(head, list[i])):
+            list[i] = list[i] + '/'

test/ok_lib2.7/dis.py

@@ -0,0 +1,224 @@
+"""Disassembler of Python byte code into mnemonics."""
+
+import sys
+import types
+
+from opcode import *
+from opcode import __all__ as _opcodes_all
+
+__all__ = ["dis", "disassemble", "distb", "disco",
+           "findlinestarts", "findlabels"] + _opcodes_all
+del _opcodes_all
+
+_have_code = (types.MethodType, types.FunctionType, types.CodeType,
+              types.ClassType, type)
+
+def dis(x=None):
+    """Disassemble classes, methods, functions, or code.
+
+    With no argument, disassemble the last traceback.
+
+    """
+    if x is None:
+        distb()
+        return
+    if isinstance(x, types.InstanceType):
+        x = x.__class__
+    if hasattr(x, 'im_func'):
+        x = x.im_func
+    if hasattr(x, 'func_code'):
+        x = x.func_code
+    if hasattr(x, '__dict__'):
+        items = x.__dict__.items()
+        items.sort()
+        for name, x1 in items:
+            if isinstance(x1, _have_code):
+                print "Disassembly of %s:" % name
+                try:
+                    dis(x1)
+                except TypeError, msg:
+                    print "Sorry:", msg
+                print
+    elif hasattr(x, 'co_code'):
+        disassemble(x)
+    elif isinstance(x, str):
+        disassemble_string(x)
+    else:
+        raise TypeError, \
+              "don't know how to disassemble %s objects" % \
+              type(x).__name__
+
+def distb(tb=None):
+    """Disassemble a traceback (default: last traceback)."""
+    if tb is None:
+        try:
+            tb = sys.last_traceback
+        except AttributeError:
+            raise RuntimeError, "no last traceback to disassemble"
+        while tb.tb_next: tb = tb.tb_next
+    disassemble(tb.tb_frame.f_code, tb.tb_lasti)
+
+def disassemble(co, lasti=-1):
+    """Disassemble a code object."""
+    code = co.co_code
+    labels = findlabels(code)
+    linestarts = dict(findlinestarts(co))
+    n = len(code)
+    i = 0
+    extended_arg = 0
+    free = None
+    while i < n:
+        c = code[i]
+        op = ord(c)
+        if i in linestarts:
+            if i > 0:
+                print
+            print "%3d" % linestarts[i],
+        else:
+            print '   ',
+
+        if i == lasti: print '-->',
+        else: print '   ',
+        if i in labels: print '>>',
+        else: print '  ',
+        print repr(i).rjust(4),
+        print opname[op].ljust(20),
+        i = i+1
+        if op >= HAVE_ARGUMENT:
+            oparg = ord(code[i]) + ord(code[i+1])*256 + extended_arg
+            extended_arg = 0
+            i = i+2
+            if op == EXTENDED_ARG:
+                extended_arg = oparg*65536L
+            print repr(oparg).rjust(5),
+            if op in hasconst:
+                print '(' + repr(co.co_consts[oparg]) + ')',
+            elif op in hasname:
+                print '(' + co.co_names[oparg] + ')',
+            elif op in hasjrel:
+                print '(to ' + repr(i + oparg) + ')',
+            elif op in haslocal:
+                print '(' + co.co_varnames[oparg] + ')',
+            elif op in hascompare:
+                print '(' + cmp_op[oparg] + ')',
+            elif op in hasfree:
+                if free is None:
+                    free = co.co_cellvars + co.co_freevars
+                print '(' + free[oparg] + ')',
+        print
+
+def disassemble_string(code, lasti=-1, varnames=None, names=None,
+                       constants=None):
+    labels = findlabels(code)
+    n = len(code)
+    i = 0
+    while i < n:
+        c = code[i]
+        op = ord(c)
+        if i == lasti: print '-->',
+        else: print '   ',
+        if i in labels: print '>>',
+        else: print '  ',
+        print repr(i).rjust(4),
+        print opname[op].ljust(15),
+        i = i+1
+        if op >= HAVE_ARGUMENT:
+            oparg = ord(code[i]) + ord(code[i+1])*256
+            i = i+2
+            print repr(oparg).rjust(5),
+            if op in hasconst:
+                if constants:
+                    print '(' + repr(constants[oparg]) + ')',
+                else:
+                    print '(%d)'%oparg,
+            elif op in hasname:
+                if names is not None:
+                    print '(' + names[oparg] + ')',
+                else:
+                    print '(%d)'%oparg,
+            elif op in hasjrel:
+                print '(to ' + repr(i + oparg) + ')',
+            elif op in haslocal:
+                if varnames:
+                    print '(' + varnames[oparg] + ')',
+                else:
+                    print '(%d)' % oparg,
+            elif op in hascompare:
+                print '(' + cmp_op[oparg] + ')',
+        print
+
+disco = disassemble                     # XXX For backwards compatibility
+
+def findlabels(code):
+    """Detect all offsets in a byte code which are jump targets.
+
+    Return the list of offsets.
+
+    """
+    labels = []
+    n = len(code)
+    i = 0
+    while i < n:
+        c = code[i]
+        op = ord(c)
+        i = i+1
+        if op >= HAVE_ARGUMENT:
+            oparg = ord(code[i]) + ord(code[i+1])*256
+            i = i+2
+            label = -1
+            if op in hasjrel:
+                label = i+oparg
+            elif op in hasjabs:
+                label = oparg
+            if label >= 0:
+                if label not in labels:
+                    labels.append(label)
+    return labels
+
+def findlinestarts(code):
+    """Find the offsets in a byte code which are start of lines in the source.
+
+    Generate pairs (offset, lineno) as described in Python/compile.c.
+
+    """
+    byte_increments = [ord(c) for c in code.co_lnotab[0::2]]
+    line_increments = [ord(c) for c in code.co_lnotab[1::2]]
+
+    lastlineno = None
+    lineno = code.co_firstlineno
+    addr = 0
+    for byte_incr, line_incr in zip(byte_increments, line_increments):
+        if byte_incr:
+            if lineno != lastlineno:
+                yield (addr, lineno)
+                lastlineno = lineno
+            addr += byte_incr
+        lineno += line_incr
+    if lineno != lastlineno:
+        yield (addr, lineno)
+
+def _test():
+    """Simple test program to disassemble a file."""
+    if sys.argv[1:]:
+        if sys.argv[2:]:
+            sys.stderr.write("usage: python dis.py [-|file]\n")
+            sys.exit(2)
+        fn = sys.argv[1]
+        if not fn or fn == "-":
+            fn = None
+    else:
+        fn = None
+    if fn is None:
+        f = sys.stdin
+    else:
+        f = open(fn)
+    source = f.read()
+    if fn is not None:
+        f.close()
+    else:
+        fn = "<stdin>"
+    code = compile(source, fn, "exec")
+    dis(code)
+
+if __name__ == "__main__":
+    _test()