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class_reader.py
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Wed, May 22, 17:54

class_reader.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
" Module used to read .classes files "
################################################################
import re
from class_decriptor import ClassDescriptor
################################################################
class ClassReader(object):
" Reader for classes objects "
def __init__(self):
self.classes = []
self.current_class = None
self.filename = None
self.line_cpt = 0
def read(self, filename):
" read the provided .classes file "
self.filename = filename
_file = open(self.filename, 'r')
self.line_cpt = 0
for line in _file:
self.readline(line)
self.line_cpt += 1
if self.current_class is not None:
self.classes.append(self.current_class)
return self.classes
def readline(self, line):
" read a single line "
line = line.split('#')[0]
line = line.strip()
if line == "":
return
try:
if self._is_new_class_tag(line):
return
if self._is_new_method_tag(line):
return
if self._is_new_typedef(line):
return
if self._is_new_member_tag(line):
return
else:
raise Exception('Unknown tag')
except Exception as ex:
raise Exception(self.filename + ":{0}".format(self.line_cpt+1)
+ ":'" + line + "' : " + str(ex))
def _is_new_class_tag(self, line):
ret = False
match = re.match(r'class\s+(\S*)', line)
if match:
name = match.group(1)
inheritance = None
ret = True
match = re.match(r'class\s+(\S*)\((.*)\)', line)
if match:
name = match.group(1).strip()
inheritance = match.group(2).strip()
inheritance = inheritance.strip().split(',')
inheritance = [e.strip() for e in inheritance]
ret = True
if ret is False:
return False
if self.current_class is not None:
self.classes.append(self.current_class)
self.current_class = ClassDescriptor(name, inheritance)
return True
def _is_new_member_tag(self, line):
if not line.find("(") == -1:
return False
if not line.find(")") == -1:
return False
match = re.match((r'((?:public|protected|private)*)\s*((?:static)?)\s*'
r'((?:\S|(?:\s+\*)|(?:\s+\&))+)\s+(\S*)[\s|;]*(?://)*(.*)'), line)
if match:
encapsulation = match.group(1).strip()
static = match.group(2).strip()
_type = match.group(3).strip()
name = match.group(4).strip()
comments = match.group(5).strip()
name = name.replace(';', '')
self.current_class.add_member(name, _type, encapsulation,
static, comments)
return True
return False
def _is_new_typedef(self, line):
if not line.find("(") == -1:
return False
if not line.find(")") == -1:
return False
match = re.match(
r'((?:public|protected|private)*)\s*typedef\s*(\S+)', line)
if match:
encapsulation = match.group(1).strip()
name = match.group(2).strip()
name = name.replace(';', '')
self.current_class.add_type(name, encapsulation)
return True
return False
def _is_new_method_tag(self, line):
match = re.match((r'((?:public|protected|private)*)\s*((?:static)?)\s*'
r'((?:virtual|pure virtual)?)\s*(.*)\s+([\S|~]*)\((.*)\)\s*'
r'((?:const)?)[\s|;]*(?://)*(.*)'), line)
if match:
encapsulation = match.group(1).strip()
static = match.group(2).strip()
virtual = match.group(3).strip()
ret = match.group(4).strip()
name = match.group(5).strip()
args = match.group(6).strip().split(',')
const = match.group(7).strip()
comments = match.group(8).strip()
args = [list(e.strip().split(' ')) for e in args]
temp_args = []
for arg in args:
if len(arg) >= 2:
temp_args.append(tuple([" ".join(arg[:-1]), arg[-1]]))
args = temp_args
args = [e for e in args if not e[0] == '']
self.current_class.add_method(name, args, ret,
encapsulation, virtual,
static, const, comments)
return True
return False
################################################################
def main():
cls_reader = ClassReader()
classes = cls_reader.read('test.classes')
for _class in classes:
print _class
if __name__ == '__main__':
main()

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