The official interpreter for the Bird programming language. (v1.0)

bird.py

file=open(input('.bird: ')+'.bird','r').readlines();import time;import os;cls=lambda:os.system('cls'if os.name in ('nt','dos')else'clear')
row=0
column=0
loopstartrow=0
loopstartcolumn=0
pointer=''
oldpointer='>'
datatype='lit'
stroutput=''
intoutput=''
strsymbol=''
file2=''

def move(t):
    global row, column
    if t[0]=='>':column+=1
    if t[0]=='<':column-=1
    if t[0]=='^':row-=1
    if t[0]=='v':row+=1
    

cls()

while not (pointer=='~' and datatype=='lit'):
    pointer=file[row][column]
    if datatype=='lit':
        if pointer=='x':
            stroutput=''
        if pointer=='.':
            oldpointer+='.'
        if pointer=='#':
            oldpointer+='#'
        if pointer=='@':
            oldpointer+='@'
        if pointer=='t':
            oldpointer+='t'
        if pointer=='>':
            oldpointer='>'
        elif pointer=='<':
            oldpointer='<'
        elif pointer=='^':
            oldpointer='^'
        elif pointer=='v':
            oldpointer='v'
        elif pointer=='/':
            print(stroutput)
            stroutput=''
        elif pointer=="'":
            datatype='str'
            strsymbol="'"
        if pointer=='"':
            datatype='str'
            strsymbol='"'
        elif pointer=='[':
            loopstartrow=row
            loopstartcolumn=column
        elif pointer==']':
            row=loopstartrow
            column=loopstartcolumn
        elif pointer=='+':
            oldpointer+='+'
        elif pointer=='-':
            oldpointer+='-'
        elif pointer=='=':
            oldpointer+='='
        elif pointer=='g':
            oldpointer+='g'
        elif pointer=='l':
            oldpointer+='l'
        elif pointer=='?':
               pointer=input('input: ')
        if pointer in '0123456789':
            if len(oldpointer)>1:
                if oldpointer[1]=='+':intoutput+=pointer
                if oldpointer[1]=='-':intoutput-=pointer
                if oldpointer[1]=='=':intoutput=pointer
                if oldpointer[1]=='t':time.sleep(float('0.'+pointer))
                if oldpointer[1]=='@':
                    file2=stroutput
                    stroutput=open(stroutput, "r").readlines()
                    if len(stroutput)>0:
                        stroutput=stroutput[int(pointer)]
                    else: stroutput=''
                if oldpointer[1]=='.':stroutput+=file[int(pointer)]
            if len(oldpointer)>2:
                if oldpointer[2]=='g':
                    if not pointer<intoutput:
                        move(oldpointer)
                if oldpointer[2]=='l':
                    if not pointer>intoutput:
                        move(oldpointer)
                if oldpointer[2]=='=':
                    if not pointer==intoutput:
                        move(oldpointer)
            oldpointer=oldpointer[0]
        elif pointer=='&':
            if len(oldpointer)>1:
                if oldpointer[1]=='=':
                    oldpointer=oldpointer[0]+'&='
                if oldpointer[1]=='g':
                    oldpointer=oldpointer[0]+'&g'
                if oldpointer[1]=='l':
                    oldpointer=oldpointer[0]+'&l'
                if oldpointer[1]=='l':
                    oldpointer=oldpointer[0]+'&l'
        elif len(oldpointer)>1:
            if oldpointer[1]=='#':
                f = open(file2, 'r+')
                f.truncate(0)
                f.write(stroutput)
                oldpointer=oldpointer[0]
    elif pointer==strsymbol:datatype='lit'
    else:stroutput+=pointer
    
    move(oldpointer)

time.sleep(2.5)