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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.2)
-
- """Parse a Python file and retrieve classes and methods.
-
- Parse enough of a Python file to recognize class and method
- definitions and to find out the superclasses of a class.
-
- The interface consists of a single function:
- readmodule(module, path)
- module is the name of a Python module, path is an optional list of
- directories where the module is to be searched. If present, path is
- prepended to the system search path sys.path.
- The return value is a dictionary. The keys of the dictionary are
- the names of the classes defined in the module (including classes
- that are defined via the from XXX import YYY construct). The values
- are class instances of the class Class defined here.
-
- A class is described by the class Class in this module. Instances
- of this class have the following instance variables:
- name -- the name of the class
- super -- a list of super classes (Class instances)
- methods -- a dictionary of methods
- file -- the file in which the class was defined
- lineno -- the line in the file on which the class statement occurred
- The dictionary of methods uses the method names as keys and the line
- numbers on which the method was defined as values.
- If the name of a super class is not recognized, the corresponding
- entry in the list of super classes is not a class instance but a
- string giving the name of the super class. Since import statements
- are recognized and imported modules are scanned as well, this
- shouldn't happen often.
-
- BUGS
- - Continuation lines are not dealt with at all, except inside strings.
- - Nested classes and functions can confuse it.
- - Code that doesn't pass tabnanny or python -t will confuse it, unless
- you set the module TABWIDTH vrbl (default 8) to the correct tab width
- for the file.
-
- PACKAGE RELATED BUGS
- - If you have a package and a module inside that or another package
- with the same name, module caching doesn't work properly since the
- key is the base name of the module/package.
- - The only entry that is returned when you readmodule a package is a
- __path__ whose value is a list which confuses certain class browsers.
- - When code does:
- from package import subpackage
- class MyClass(subpackage.SuperClass):
- ...
- It can't locate the parent. It probably needs to have the same
- hairy logic that the import locator already does. (This logic
- exists coded in Python in the freeze package.)
- """
- import sys
- import imp
- import re
- import string
- __all__ = [
- 'readmodule']
- TABWIDTH = 8
- _getnext = re.compile('\n (?P<String>\n \\""" [^"\\\\]* (?:\n (?: \\\\. | "(?!"") )\n [^"\\\\]*\n )*\n \\"""\n\n | \'\'\' [^\'\\\\]* (?:\n (?: \\\\. | \'(?!\'\') )\n [^\'\\\\]*\n )*\n \'\'\'\n\n | " [^"\\\\\\n]* (?: \\\\. [^"\\\\\\n]*)* "\n\n | \' [^\'\\\\\\n]* (?: \\\\. [^\'\\\\\\n]*)* \'\n )\n\n| (?P<Method>\n ^\n (?P<MethodIndent> [ \\t]* )\n def [ \\t]+\n (?P<MethodName> [a-zA-Z_] \\w* )\n [ \\t]* \\(\n )\n\n| (?P<Class>\n ^\n (?P<ClassIndent> [ \\t]* )\n class [ \\t]+\n (?P<ClassName> [a-zA-Z_] \\w* )\n [ \\t]*\n (?P<ClassSupers> \\( [^)\\n]* \\) )?\n [ \\t]* :\n )\n\n| (?P<Import>\n ^ import [ \\t]+\n (?P<ImportList> [^#;\\n]+ )\n )\n\n| (?P<ImportFrom>\n ^ from [ \\t]+\n (?P<ImportFromPath>\n [a-zA-Z_] \\w*\n (?:\n [ \\t]* \\. [ \\t]* [a-zA-Z_] \\w*\n )*\n )\n [ \\t]+\n import [ \\t]+\n (?P<ImportFromList> [^#;\\n]+ )\n )\n', re.VERBOSE | re.DOTALL | re.MULTILINE).search
- _modules = { }
-
- class Class:
- '''Class to represent a Python class.'''
-
- def __init__(self, module, name, super, file, lineno):
- self.module = module
- self.name = name
- if super is None:
- super = []
-
- self.super = super
- self.methods = { }
- self.file = file
- self.lineno = lineno
-
-
- def _addmethod(self, name, lineno):
- self.methods[name] = lineno
-
-
-
- class Function(Class):
- '''Class to represent a top-level Python function'''
-
- def __init__(self, module, name, file, lineno):
- Class.__init__(self, module, name, None, file, lineno)
-
-
- def _addmethod(self, name, lineno):
- if not __debug__ and 0:
- raise AssertionError, "Function._addmethod() shouldn't be called"
-
-
-
- def readmodule(module, path = [], inpackage = 0):
- '''Backwards compatible interface.
-
- Like readmodule_ex() but strips Function objects from the
- resulting dictionary.'''
- dict = readmodule_ex(module, path, inpackage)
- res = { }
- for key, value in dict.items():
- if not isinstance(value, Function):
- res[key] = value
-
-
- return res
-
-
- def readmodule_ex(module, path = [], inpackage = 0):
- '''Read a module file and return a dictionary of classes.
-
- Search for MODULE in PATH and sys.path, read and parse the
- module and return a dictionary with one entry for each class
- found in the module.'''
- dict = { }
- i = module.rfind('.')
- if i >= 0:
- package = module[:i].strip()
- submodule = module[i + 1:].strip()
- parent = readmodule_ex(package, path, inpackage)
- child = readmodule_ex(submodule, parent['__path__'], 1)
- return child
-
- if _modules.has_key(module):
- return _modules[module]
-
- if module in sys.builtin_module_names:
- _modules[module] = dict
- return dict
-
- f = None
- if inpackage:
-
- try:
- (suff, mode, type) = (f, file)
- except ImportError:
- f = None
-
-
- if f is None:
- fullpath = list(path) + sys.path
- (suff, mode, type) = (f, file)
-
- if type == imp.PKG_DIRECTORY:
- dict['__path__'] = [
- file]
- _modules[module] = dict
- path = [
- file] + path
- (suff, mode, type) = (f, file)
-
- if type != imp.PY_SOURCE:
- f.close()
- _modules[module] = dict
- return dict
-
- _modules[module] = dict
- classstack = []
- src = f.read()
- f.close()
- countnl = string.count
- (lineno, last_lineno_pos) = (1, 0)
- i = 0
- while 1:
- m = _getnext(src, i)
- if not m:
- break
-
- (start, i) = m.span()
- if m.start('Method') >= 0:
- thisindent = _indent(m.group('MethodIndent'))
- meth_name = m.group('MethodName')
- lineno = lineno + countnl(src, '\n', last_lineno_pos, start)
- last_lineno_pos = start
- while classstack and classstack[-1][1] >= thisindent:
- del classstack[-1]
- if classstack:
- cur_class = classstack[-1][0]
- cur_class._addmethod(meth_name, lineno)
- else:
- f = Function(module, meth_name, file, lineno)
- dict[meth_name] = f
- elif m.start('String') >= 0:
- pass
- elif m.start('Class') >= 0:
- thisindent = _indent(m.group('ClassIndent'))
- while classstack and classstack[-1][1] >= thisindent:
- del classstack[-1]
- lineno = lineno + countnl(src, '\n', last_lineno_pos, start)
- last_lineno_pos = start
- class_name = m.group('ClassName')
- inherit = m.group('ClassSupers')
- if inherit:
- inherit = inherit[1:-1].strip()
- names = []
- for n in inherit.split(','):
- n = n.strip()
- if dict.has_key(n):
- n = dict[n]
- else:
- c = n.split('.')
- if len(c) > 1:
- m = c[-2]
- c = c[-1]
- if _modules.has_key(m):
- d = _modules[m]
- if d.has_key(c):
- n = d[c]
-
-
-
- names.append(n)
-
- inherit = names
-
- cur_class = Class(module, class_name, inherit, file, lineno)
- dict[class_name] = cur_class
- classstack.append((cur_class, thisindent))
- elif m.start('Import') >= 0:
- for n in m.group('ImportList').split(','):
- n = n.strip()
-
- try:
- d = readmodule_ex(n, path, inpackage)
- except:
- pass
-
-
- elif m.start('ImportFrom') >= 0:
- mod = m.group('ImportFromPath')
- names = m.group('ImportFromList').split(',')
-
- try:
- d = readmodule_ex(mod, path, inpackage)
- except:
- continue
-
- for n in names:
- n = n.strip()
- if d.has_key(n):
- dict[n] = d[n]
- elif n == '*':
- for n in d.keys():
- if n[0] != '_' and not dict.has_key(n):
- dict[n] = d[n]
-
-
-
-
- elif not __debug__ and 0:
- raise AssertionError, 'regexp _getnext found something unexpected'
- return dict
-
-
- def _indent(ws, _expandtabs = string.expandtabs):
- return len(_expandtabs(ws, TABWIDTH))
-
-