class build():

    ALLOWED_TYPES = ['echo', 'print', 'var', '']
    RECOGNIZED_TYPES = []
    RECOGNIZED_TYPE_VALUES = []

    def __init__(self, FileName):
        self.FileName = FileName
        self.buildFromFile()

    def buildFromFile(self):
        with open(self.FileName, 'r', encoding='utf-8') as FileDocument:
            for i, DocumentLines in enumerate(FileDocument):
                DocumentLines = DocumentLines.lower()
                Line = DocumentLines.split('\n')

                Type = Line[0].split(" ")
                if Type[0] in self.ALLOWED_TYPES and Type[0] != '':
                    self.RECOGNIZED_TYPES.append({i: Type})
                elif Type[0] == '':
                    pass
                else:
                    print("Unrecognized type of '"+Type[0]+"' on line "+str((i+1))+", program terminated.")
                    return

        self.CheckTypes()

    def Type_echo(self, TypeValue):
        #[{'echo': "'aaaaa'"}, {'print': "'aaaaa'"}, {'var': "'a'"}]
        print(TypeValue)

    def Type_print(self, TypeValue):
        self.Typeecho(TypeValue)

    def Type_var(self, Variable):
        # Variable structure: var NAME = 'VALUE';
        pass

    def CheckTypes(self):
        # echo 'Neco'
        # print 'Neco'
        # var neco = 'neco'
        for i, Type in enumerate(self.RECOGNIZED_TYPES):
            #tst = self.RECOGNIZED_TYPE_VALUES[i].get(Type)
            #tst = str(self.RECOGNIZED_TYPE_VALUES[i]).split("'")
            pass
            '''
            ['{', 'echo', ': "', 'aaaaa', '"}']
            ['{', 'print', ': "', 'aaaaa', '"}']
            ['{', 'var', ': "', 'a', '"}']
            '''
            #print(self.RECOGNIZED_TYPE_VALUES)

            #exec("self.Type_"+Type + '('+tst+')')

cls = build('test.txt')