module Canoe

class CmdParser

Parsing command arguments passed to canoe

class Compiler

Storing compiler name in String and flags as an array

class DepAnalyzer

This class is the key component of canoe, which offers file dependency analysis functionality.
  A DepAnalyzer takes a directory as input, sources files and corresponding header files in this
  directory should have same name, e.g. test.cpp and test.hpp.
  DepAnalyzer would read every source file and recursively process user header files included in this source file to
  find out all user header files this source file depends on.
  Based on dependencies built in previous stage, DepAnalyzer determines which files should be recompiled and return
  these files to caller.

  Dependencies could be written to a file to avoid wasting time parsing all files, Depanalyzer would read from
  this file to construct dependencies. But if sources files included new headers or included headers are revmoed,
  Depanalyzer should rebuild the whole dependencies.

If the project has circular dependency, this command would fail