yacc.py 文件源码

def parse(self,input=None,lexer=None,debug=0,tracking=0,tokenfunc=None):
        if debug or yaccdevel:
            if isinstance(debug,int):
                debug = PlyLogger(sys.stderr)
            return self.parsedebug(input,lexer,debug,tracking,tokenfunc)
        elif tracking:
            return self.parseopt(input,lexer,debug,tracking,tokenfunc)
        else:
            return self.parseopt_notrack(input,lexer,debug,tracking,tokenfunc)


    # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    # parsedebug().
    #
    # This is the debugging enabled version of parse().  All changes made to the
    # parsing engine should be made here.   For the non-debugging version,
    # copy this code to a method parseopt() and delete all of the sections
    # enclosed in:
    #
    #      #--! DEBUG
    #      statements
    #      #--! DEBUG
    #
    # !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!