<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _process_execs(self, execmatch, parent, module):
 """Processes the regex match of an executable from the match object."""

        #Get the matches that must be present for every executable.
        name = execmatch.group("name").strip()
        modifiers = execmatch.group("modifiers")
        if modifiers is None:
            modifiers = []
        else:
            modifiers = re.split(",[ \t]*", modifiers)
        codetype = execmatch.group("codetype")
        params = re.split("[\s,]+", execmatch.group("parameters"))
        contents = execmatch.group("contents")

        #If the exec is a function, we also may have a type and kind specified.
        if codetype.lower() == "function":
            dtype = execmatch.group("type")
            kind = execmatch.group("kind")
            result = Function(name, modifiers, dtype, kind, parent)
        else:
            result = Subroutine(name, modifiers, parent)

        #Set the regex start and end char indices
        result.start, result.end = module.absolute_charindex(execmatch.string, execmatch.start(),
                                                             execmatch.end())
        result.contents = contents

        #Now we can handle the rest which is common to both types of executable
        #Extract a list of local variables
        self._parse_members(contents, result, params)
        if isinstance(result, Function):
            #We need to handle the syntax for defining a function with result(variable)
            #to specify the return type of the function.
            if execmatch.group("result") is not None:
                resvar = execmatch.group("result").lower().split("result(")[1].replace(")", "")
            else:
                resvar = None
            result.update_dtype(resvar)
        
        #Fortran allows lines to be continued using &. The easiest way
        #to deal with this is to remove all of those before processing
        #any of the regular expressions
        decommented = "\n".join([ self._depend_exec_clean(l) for l in contents.split("\n") ])
        cleaned = re.sub("&\s*", "", decommented)

        #Finally, process the dependencies. These are calls to functions and
        #subroutines from within the executable body
        self._process_dependencies(result, cleaned)
        self._process_assignments(result, cleaned)
        
        return result