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GeezerVison is showing github.com — compiler_java_python/token.py at master · ladingwu/compiler_java_python Expand file tree/ Copy pathtoken.pyMore file actions 128 lines (118 loc) · 3.63 KB / Copy pathtoken.pyFile metadata and controls128 lines (118 loc) · 3.63 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 import os,sys msg_table=['func','main','if','while', 'else','num','string','bool','(',')', ';',',','{','}','[',']','=','+','-','*' ,'/','%','&','|','>','<','==','>=','<=','"','"','id'] def read_token(file): with open(file,'r')as f: return f.readlines() def token_recogn(lines): msg_line=0 #k='qwertyuioplkjhgfdsazxvcbnm_' #s=k.upper() q1='>=' q2='<=' q3='==' m=',;+=*/-(){}""><' wrong_mark=';,。;“”【】' for line in lines: words='' msg_line+=1 msg_row=0 str_i=0 msg='' for word in line: if word ==' ' or word =='\t' or word=='\n': if(word=='\t'): msg_row+=4 if words != '': deal_words(words, msg_line, msg_row) words='' elif word in m : if(msg_row+1<len(line) and line[msg_row+1]=='='): msg=msg+word else: if len(words)>0: deal_words(words,msg_line,msg_row-1) deal_words(msg+word, msg_line,msg_row) msg='' else: deal_words(msg+word,msg_line,msg_row) msg='' words='' elif word in wrong_mark: if len(words)>0: deal_words(words,msg_line,msg_row-1) deal_words(word, msg_line,msg_row) else: deal_words(word,msg_line,msg_row) else: words=words+word msg_row+=1 def check_id(s): m='qwertyuiopasdfghjklzxcvbnm_' n=m.upper() k='0987654321' flag=True #print(n) j=0 for i in s: if j==0: j+=1 if i in k: flag=False break if i not in m and i not in n and i not in k: flag=False break return flag def check_num(s): k="0987654321" flag=True for i in s: if i not in k: flag=False break return flag last_word='' #为了读取字符串 count=0 def deal_words(words,msg_line,msg_row): i=0 # print(words) global msg_table,last_word,count length=len(msg_table) #print('-----------------------------------',words) if words=='"': count+=1 if (count%2)!=0 and last_word=='"': last_word='' # 表示字符常量 print('id_string'+':'+words+':'+str(msg_line)+':'+str(msg_row)) return for t in msg_table: if i==length-1: if check_id(words): print('id'+':'+words+':'+str(msg_line)+':'+str(msg_row)) break elif check_num(words): # 表示常数变量 print('id_num'+':'+words+':'+str(msg_line)+':'+str(msg_row)) break else: error(words,msg_line,msg_row) break if words==t: if i<8: print(words+':'+words+':'+str(msg_line)+':'+str(msg_row)) elif i<length-1: print(words+':'+words+':'+str(msg_line)+':'+str(msg_row)) break #return msg_table[i] i+=1 last_word=words; def error(s,line,row): print('word:'+s+' was illegal, in ','line: '+str(line),"row: "+str(row)) if __name__=="__main__": filename=sys.argv[1] list_token=read_token(filename) token_recogn(list_token) |
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