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Mini Shell
class Doc2Tester:
def __init__(self, mod, doc, node):
self.mod = mod
self.doc = doc
self.node = node
self.exdefs = []
self.set_out([])
self.test_names = {}
self.condition_exprs = {}
self.condition_methods = {}
self.document_metas = []
self.document_lang = None
self.document_title = None
self.example_exprs = {}
self.ex_id = 1
def _visit_children(self, node):
E = self.mod.ReportedError
for ch in node.children:
try:
ch.accept(self)
except E:
pass
def ap(self, *args):
self.extend(args)
def error(self, msg, *args, **kwds):
msg = 'Doc2Tester: ' + msg
self.doc.env.error(msg, *args, **kwds)
def get_condition_method(self, cond):
idn = cond.get_id_name()
name = self.condition_methods.get(idn)
if name is None:
name = 'cond_%d' % len(self.condition_methods)
self.condition_methods[idn] = name
ap = self.ap
myself = '_self'
arg_names = cond.get_arg_names()
while myself in arg_names:
myself = '_' + myself
argstring = ', '.join([myself]+arg_names)
ap('def %s(%s):' % (name, argstring), '<NL>', '<INDENT>')
ap('# Condition: %s' % idn, '<NL>')
pcs = cond.find_aspects('python_code')
if not pcs:
self.error('No python code specified for testing condition: %r.' % idn,
cond.src.node, exception=None)
for pc in pcs:
for ic in pc.find_aspects('in_context'):
ctx = ic.src.node.arg.strip()
for line in ctx.split('\n'):
ap(line, '<NL>')
if pc is pcs[-1]:
ap('return (%s)' % pc.src.node.arg.strip(), '<NL>')
else:
ap('if not (%s):' %
pc.src.node.arg.strip(), '<NL>', '<INDENT>')
ap('return False', '<NL>', '<DEDENT>')
ap('<DEDENT>')
return name
def gen_comment(self, s):
for line in s.split('\n'):
self.ap('# '+line, '<NL>')
def get_children(self, node):
if not node.arg.strip():
return node.children
return (self.doc.node_of_taci('name', node.arg.strip()),)+tuple(node.children)
def get_condition_expr(self, po, args, attr, src, tgt):
cond = po.get_definition()
if cond is None:
return None
name = self.get_condition_method(cond)
callargs = []
self_name = attr.get_self_name()
for an in po.arg_names:
v = None
if an == self_name:
v = src
elif an == '<returned value>':
v = tgt
else:
v = args.get_arg_value(an)
if v is None:
self.error('Invalid condition argument: %r.' % an,
po.src.node,
exception=None)
continue
v = args.mapname(v)
callargs.append(v)
return '%sself.%s(%s)' % (
('', 'not ')[po.is_not],
name,
', '.join(callargs))
def get_example_expr(self, eg):
ex = self.example_exprs.get(eg)
if ex is not None:
return ex
ex = eg.get_ex_text()
ctx = eg.get_ctx_text()
if ctx:
ex_name = 'get_ex_%d' % self.ex_id
self.ex_id += 1
self.ap('def %s(self):' % ex_name, '<NL>', '<INDENT>')
for line in ctx.split('\n'):
self.ap(line, '<NL>')
self.ap('return %s' % ex, '<NL>', '<DEDENT>')
ex = 'self.%s()' % ex_name
self.example_exprs[eg] = ex
return ex
def get_test_name(self, kind):
tn = kind.srclastname
if tn in self.test_names:
i = self.test_names[tn]
self.test_names[tn] += 1
tn = '%s_%d' % (tn, i)
else:
self.test_names[tn] = 1
return tn
def get_tester(self):
ap = self.ap
ap('# Tests generated by: %s' % __name__, '<NL>')
# ap('# Main source file: %s' %
# self.doc.env.get_package().get_filename(), '<NL>')
ap('# Date: %s' % self.mod.time.asctime(
self.mod.time.localtime()), '<NL>')
ap('class Tester:', '<NL>', '<INDENT>')
ap('tests = {}', '<NL>')
self._visit_children(self.node)
lines = []
indent = 0
line = []
for tok in self.out:
if tok == '<INDENT>':
indent += 4
elif tok == '<DEDENT>':
indent -= 4
elif tok == '<NL>':
lines.append(''.join(line))
line = []
else:
if not line:
line.append(indent * ' ')
line.append(tok)
return '\n'.join(lines)+'\n'
def set_out(self, out):
self.out = out
self.extend = out.extend
def visit_arglist(self, node):
self.ap('(')
comma = 0
for ch in self.get_children(node):
if comma:
self.ap(', ')
else:
comma = 1
ch.accept(self)
self.ap(')')
def visit_assign(self, node):
children = self.get_children(node)
while children:
children[0].accept(self)
self.ap(' = ')
children[1].accept(self)
self.ap('<NL>')
children = children[2:]
def visit_block(self, node):
self.ap('<INDENT>')
self._visit_children(node)
self.ap('<DEDENT>')
def visit_call(self, node):
children = self.get_children(node)
children[0].accept(self)
self.ap('(')
comma = 0
for ch in children[1:]:
if comma:
self.ap(', ')
else:
comma = 1
ch.accept(self)
self.ap(')')
def visit_comment(self, node):
pass
def visit_def(self, node):
self.ap('def ')
children = self.get_children(node)
children[0].accept(self)
children[1].accept(self)
self.ap(':', '<NL>')
for ch in children[2:]:
ch.accept(self)
def visit_default(self, node):
self.error('I don\'t know what to generate for the tag %r.' %
node.tag, node)
def visit_document(self, node):
self._visit_children(node)
def visit_document_lang(self, node):
if self.document_lang is not None:
self.error('Duplicate document lang directive.', node)
self.document_lang = node
def visit_document_title(self, node):
if self.document_title is not None:
self.error('Duplicate document title directive.', node)
self.document_title = node
def visit_exdefs(self, node):
self.exdefs.append(node)
def visit_fcall(self, node):
self.visit_call(node)
def visit_index(self, node):
children = self.get_children(node)
children[0].accept(self)
self.ap('[')
comma = 0
for ch in children[1:]:
if comma:
self.ap(', ')
else:
comma = 1
ch.accept(self)
self.ap(']')
def visit_meta(self, node):
self.document_metas.append(node)
def visit_name(self, node):
self.ap(node.arg.strip())
def visit_pcall(self, node):
self.visit_call(node)
self.ap('<NL>')
def visit_string(self, node):
self.ap('%r' % node.arg.strip())
def visit_subject(self, node):
self.ap('SUBJECT')
def visit_test_of(self, node):
TestOf(self, node)
def visit_test_program_segment(self, node):
self.gen_comment('Test for: %s' % node.arg.strip())
self._visit_children(node)
def visit_to_document_only(self, node):
pass
def visit_to_tester_only(self, node):
self._visit_children(node)
class DiffKind:
def __init__(self, a, b):
self.a = a
self.b = b
self.d_tag = 'diffkind'
def get_atom_kinds(self):
return [self]
def get_id_name(self):
return self.a.get_id_name() + '+' + self.b.get_id_name() + "'"
class EitherTest:
def __init__(self, ):
pass
class TestOf(Doc2Tester):
def __init__(self, parent, node):
self.__dict__.update(parent.__dict__)
self.parent = parent
self.node = node
kind, args = node.arg, node.children
mod = self.mod = parent.mod
self.Kan = mod.KanExtension
self.Cat = mod.Cat
self.args = args
self.kind = kind
self.coverage = None
for node in args:
t = node.tag
if t == 'coverage':
if self.coverage is not None:
self.error('Duplicate coverage specifications',
node, exception=None)
else:
try:
coverage = int(node.arg.strip())
except ValueError:
coverage = node.arg.strip()
self.coverage = coverage
else:
self.error('Invalid element in %r.' %
self.node.tag, node, exception=None)
if self.coverage is None:
self.coverage = 1
self.make_cat()
def getattr_code(self, obj, attr):
if self.mod.is_identifier(attr):
return '%s.%s' % (obj, attr)
else:
return 'getattr(%s, %r)' % (obj, attr)
def warn(self, message, node=None):
self.error(message, node, exception=None, harmless=1)
def make_cat(self):
objects = []
arrows = {}
relations = []
fa = {}
fo = {}
arg_counter = 1
ac = [1]
eithertests = []
kinds = []
kindofname = {}
ex_setup = []
ex_map = {}
pc_checks = {}
def add_kind(kind):
name = kind.get_id_name()
if name not in objects:
objects.append(name)
kinds.append(kind)
kindofname[name] = kind
return name
def get_example_expr(a):
if a in ex_map:
return ex_map[a]
x = self.parent.get_example_expr(a)
usage = a.get_use_text(x)
ex_map[a] = usage
return usage
def gen_atom_beam(asp):
asptgt = asp.tgt
tag = asptgt.d_tag
if tag == 'attribute':
attr = asptgt
otherkinds = []
atkak = attr.get_atom_beams()
for ab in atkak:
a = ab.tgt
if a.d_tag == 'mapping':
op = asp + ab
ret_kind = a.get_return_test_kind()
tgt_name = add_kind(ret_kind)
examples = a.get_args_examples(get_example_expr, kind)
for args in examples:
arrow_name = 'CALLATTR%d' % ac[0]
ac[0] += 1
arrows[arrow_name] = (src_name, tgt_name)
fa[arrow_name] = ('callattr', op, args)
else:
otherkinds.append(a)
if otherkinds or not atkak:
if len(otherkinds) != len(atkak):
# make new atk somehow
oth = [(x.get_id_name(), x) for x in otherkinds]
oth.sort()
otherkinds = [y for (x, y) in oth]
atk = self.mod.Main.Kind()
atk.d_tag = 'kind'
atk.aspects = otherkinds
atk.tgtfullname = '(%s)' % (
'&'.join([x.tgtfullname for x in otherkinds]))
else:
atk = attr.get_test_kind()
arrow_name = '%s:%d' % (attr.get_id_name(), ac[0])
ac[0] += 1
tgt_name = add_kind(atk)
assert arrow_name not in arrows
arrows[arrow_name] = (src_name, tgt_name)
fa[arrow_name] = ('getattr', attr.get_attr_name())
elif tag in ('operator', 'function_operator', 'inplace_operator',
'reverse_operator', 'mapping', 'setitem', 'delitem', 'getitem'):
ret_kind = asp.get_return_test_kind()
tgt_name = add_kind(ret_kind)
examples = asp.get_args_examples(get_example_expr)
for args in examples:
arrow_name = 'OPERATOR%d' % ac[0]
ac[0] += 1
arrows[arrow_name] = (src_name, tgt_name)
fa[arrow_name] = (tag, asp, args)
elif tag == 'either':
asp_name = add_kind(asptgt)
if asptgt is not kind:
arrow_name = '(%s:%s:%d)' % (src_name, asp_name, ac[0])
ac[0] += 1
arrows[arrow_name] = (src_name, asp_name)
fa[arrow_name] = ('subkind', asp_name)
for i, ak in enumerate(asptgt.get_alt_kinds()):
tgt_name = add_kind(ak)
arrow_name = "(%s'%s)" % (asp_name, tgt_name)
arrows[arrow_name] = (asp_name, tgt_name)
fa[arrow_name] = ('superkind', i)
else:
assert 0
add_kind(self.kind)
while kinds:
kind = kinds.pop()
src_name = kind.get_id_name()
for asp in kind.get_atom_beams():
try:
gen_atom_beam(asp)
except self.mod.ReportedError:
pass
cat = self.Cat.oarcat(objects, arrows, relations)
tester = self.Kan.category_tester(
self.Cat.Functor(fo, fa, cat), coverage=self.coverage)
def get_arrow_name(a):
return ','.join(a)
tester.get_arrow_name = get_arrow_name
object_tester = tester.get_object_tester(self.kind.get_id_name())
icode = object_tester.get_intermediate_test_code()
e_names = {}
e_name_no = [0]
def e_name_of(a):
if not a:
return 'arg'
# return 'e[%r]'%a
if a not in e_names:
e_names[a] = 't%d' % e_name_no[0]
e_name_no[0] += 1
return e_names[a]
def call_fo(a, b):
return 'fo[%r](%s)' % (a, e_name_of(b))
def assign_fa(append, tgt, func, src):
tag = func[0]
if tag == 'getattr':
name = func[1]
append('%s = %s' % (tgt, self.getattr_code(src, name)))
elif tag in ('callattr', 'operator', 'inplace_operator', 'function_operator',
'reverse_operator', 'mapping', 'setitem', 'delitem', 'getitem'):
op = func[1]
opname = op.get_op_name()
args = func[2]
sus = args.get_setups_for_preconditions()
if sus is not None:
for su in sus:
append('%s.%s(%s)' %
(src, su.get_name(), su.get_args()))
else:
self.error('Could not find postcondition to satisfy precondition for %r.' % (
op.get_op_id_name()),
exception=None)
eqs = []
for eq in op.find_equations():
pres = eq.find_aspects('precondition')
posts = eq.find_aspects('postcondition')
# xxx late checking but will do for now I may relax it anyway
if len(pres) != 1:
if pres:
node = pres[0].src.node
else:
node = eq.src.node
self.error('Exactly one precondition currently allowed in equation.',
node,
exception=None)
if len(posts) < 1:
self.error('At least one postcondition currently required in equation.',
eq.src.node,
exception=None)
if pres:
pre = pres[0]
ce = self.parent.get_condition_expr(
pre, args, op, src, None)
if ce is None:
# This 'cant happen' anymore, checked here 'just in case'...
raise SyntaxError('Undefined condition: %r' % pre)
prename = 'pre_%d' % len(eqs)
eqs.append((prename, posts))
append('%s = %s' % (prename, ce))
if tag == 'callattr':
append('%s = %s(%s)' %
(tgt, self.getattr_code(src, opname), args))
elif tag == 'operator':
append('%s = %s %s %s' % (tgt, src, opname, args))
elif tag == 'inplace_operator':
append('%s = %s' % (tgt, src))
append('%s %s %s' % (tgt, opname, args))
elif tag == 'reverse_operator':
append('%s = %s %s %s' % (tgt, args, opname, src))
elif tag == 'function_operator':
argstr = str(args)
if argstr:
argstr = ', ' + argstr
append('%s = %s(%s%s)' % (tgt, opname, src, argstr))
elif tag == 'mapping':
append('%s = %s(%s)' % (tgt, src, args))
elif tag == 'getitem':
# Number of args >=1, has been checked.
append('%s = %s[%s]' % (tgt, src, args))
elif tag == 'delitem':
# Number of args >=1, has been checked.
append('del %s[%s]' % (src, args))
elif tag == 'setitem':
# Number of args >=2, has been checked.
append('%s[%s] = %s' %
(src, ', '.join(args.negs[:-1]), args.negs[-1]))
else:
assert 0
posts = args.get_postconditions()
for po in posts:
ce = self.parent.get_condition_expr(po, args, op, src, tgt)
if ce is None:
continue
append('assert %s, %r' % (
ce,
'Failed postcondition: %r' % po.cond_expr,
))
for (prename, posts) in eqs:
for post in posts:
ce = self.parent.get_condition_expr(
post, args, op, src, tgt)
if ce is None:
# This 'cant happen' anymore, checked here 'just in case'...
raise SyntaxError('Undefined condition: %r' % post)
message = 'Failed postcondition equality: %r' % post
append('assert %s == %s, %r' % (
prename, ce, message))
else:
assert 0
pylines = []
class ArrowTree:
def __init__(self, pre):
self.pre = pre
self.children = []
def __str__(self):
if self.children:
chdrn = ', chdrn = %s' % self.children
else:
chdrn = ''
return 'AT(pre = %s%s)' % (self.pre, chdrn)
__repr__ = __str__
ats = {}
def at_of_pre(pre):
at = ats.get(pre)
if at is None:
at = ArrowTree(pre)
ats[pre] = at
if pre:
at_of_pre(pre[:-1]).children.append(at)
return at
def trav(t):
subs = []
src = t.pre
src_name = e_name_of(src)
for ch in t.children:
try:
ar = ch.pre[-1]
func = fa[ar]
tgt = ch.pre
tag = func[0]
if tag == 'subkind':
e_names[ch.pre] = src_name
trav(ch)
elif tag == 'superkind':
subs.append((func, ch))
else:
assign_fa(pylines.append, e_name_of(
tgt), func, src_name)
trav(ch)
except self.mod.ReportedError:
pass
if subs:
subs.sort()
indents = 0
for func, ch in subs:
e_names[ch.pre] = src_name
pos = len(pylines)
pylines.append('try:')
pylines.append('<INDENT>')
trav(ch)
if pos+2 == len(pylines):
pylines.pop()
pylines.pop()
else:
indents += 1
pylines.append('<DEDENT>')
pylines.append('except:')
pylines.append('<INDENT>')
if indents:
pylines.append('raise')
pylines.extend(['<DEDENT>']*indents)
alla = object_tester.get_all_arrows()
init = at_of_pre(())
for a in alla:
for i in range(1, len(a)+1):
at_of_pre(a[:i])
trav(init)
if not pylines:
self.warn('No tests generated for %r.' % self.kind.tgtfullname)
pylines = ['pass']
ap = self.parent.ap
name = self.parent.get_test_name(self.kind)
test_name = 'test_%s' % name
ap('def %s(self, arg):' % test_name, '<NL>', '<INDENT>')
for line in ex_setup + pylines:
ap(line)
if line not in ('<INDENT>', '<DEDENT>'):
ap('<NL>')
ap('<DEDENT>')
ap('tests[%r] = %s' % (self.kind.tgtfullname, test_name), '<NL>')
class _GLUECLAMP_:
_imports_ = (
'_parent:SpecNodes',
'_parent.SpecNodes:node_of_taci',
'_parent:Main',
'_parent.Main:ReportedError',
'_root.io:StringIO',
'_root.sys:stdout',
'_root:sys',
'_root.traceback:format_exception',
'_root.guppy.etc:KanExtension',
'_root.guppy.etc:Cat',
'_root:re',
'_root:time',
)
# Reserved words found in Grammar of Python 2.3.3
# Is there a list somewhere in some std lib?
reserved_words = (
'and',
'assert',
'break',
'class',
'continue',
'def',
'del',
'elif',
'else',
'except',
'exec',
'finally',
'for',
'from',
'global',
'if',
'import',
'in',
'is',
'lambda',
'not',
'or',
'pass',
'print',
'raise',
'return',
'try',
'while',
'yield',
)
def _get_is_identifier(self):
m = self.re.compile('[_a-zA-Z][_a-zA-Z0-9]*').match
rwd = dict([(rw, 1) for rw in self.reserved_words])
return lambda x: m(x) and x not in rwd
def doc2text(self, doc, node):
d2h = Doc2Tester(self, doc, node)
return d2h.get_tester()
def doc2filer(self, doc, node, name, dir, opts, IO):
text = self.doc2text(doc, node)
path = IO.path.join(dir, '%s.py' % name)
node = self.node_of_taci('write_file', path, [
self.node_of_taci('text', text)])
return node
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