C语言词法分析器-源代码-风君版.doc

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Cant create file : key0.txt);return;fclose (floading);/*建立保留字表文件：key0.txt*/if (floading=fopen(key1.txt,w)=NULL)printf(Error! Cant create file : key1.txt);return;/*建立分隔符表文件：key1.txt*/if (floading=fopen(key2.txt,w)=NULL)printf(Error! Cant create file : key2.txt);return;fclose(floading);/*建立运算符表文件：key2.txt*/if (floading=fopen(key3.txt,w)=NULL)printf(Error! Cant create file : key3.txt);return;fclose (floading);/*建立标识符表文件：key3.txt*/if (floading=fopen(c40.txt,w)=NULL)printf(Error! Cant create file : c40.txt);return;fclose (floading);/*建立整数类型常量表文件：c40.txt*/if (floading=fopen(c41.txt,w)=NULL)printf(Error! Cant create file : c41.txt);return;fclose (floading);/*建立浮点类型常量表文件：c41.txt*/if (floading=fopen(c42.txt,w)=NULL)printf(Error! Cant create file : c42.txt);return;fclose (floading);/*建立字符类型常量表文件：c42.txt*/if (floading=fopen(c43.txt,w)=NULL)printf(Error! Cant create file : c43.txt);return;fclose (floading);/*建立字符串类型常量表文件：c43.txt*/ if (floading=fopen(defination.txt,w)=NULL)printf(Error! Cant create file : defination.txt);return;fclose (floading);/*建立注释文件：defination.txt*/if (floading=fopen(output.txt,w)=NULL)printf(Error! Cant create file : output.txt);return;fclose (floading);/*建立内部码文件：output.txt*/if (floading=fopen(temp_key1,w)=NULL)printf(Error! Cant create file : temp_key1);return;fclose (floading);/*建立保留字临时表文件：temp_key1*/if (floading=fopen(temp_key3,w)=NULL)printf(Error! Cant create file : temp_key3);return;fclose (floading);/*建立标识符临时文件：temp_key3*/if (floading=fopen(temp_c40,w)=NULL)printf(Error! Cant create file : temp_c40);return;fclose (floading);/*建立整数类型常量临时文件：temp_c40*/if (floading=fopen(temp_c41,w)=NULL)printf(Error! Cant create file : temp_c41);return;fclose (floading);/*建立浮点类型常量临时文件：temp_c41*/if (floading=fopen(temp_c42,w)=NULL)printf(Error! Cant create file : temp_c42);return;fclose (floading);/*建立字符类型常量临时文件：temp_c42*/if (floading=fopen(temp_c43,w)=NULL)printf(Error! Cant create file : temp_c43);return;fclose (floading);/*建立字符串类型常量临时文件：temp_c43*/* 保留字及标识符判断函数 */void char_search(char *word)int m,line=0,csi=0;int value=0;int value2=0;char c,cs100;FILE *foutput,*finput;for (m=1;m)chin=fgetc(fin);/*chin=fgetc(fin);*/*对空格符、水平制表符进行处理*/else if (chin= )|(chin=t);/*对回车符进行处理*/else if (chin=n);/*对单引号内的字符常量进行处理*/else if (chin=target0)if (xx19=0)fout=fopen(key1.txt,a);fprintf(fout,1t9tt%cn,target0);fclose(fout);xx19=1;temp0=chin;chin=fgetc(fin);temp1=chin;chin=fgetc(fin);if (chin!=target0)temp2=chin;chin=fgetc(fin);temp3=chin;temp4=0;elsetemp2=chin;temp3=0;c_search(temp);/*对双引号内的字符串常量进行处理*/else if (chin=)int i=0;tempi+=;chin=fgetc(fin);while (chin!=)tempi+=chin;chin=fgetc(fin);tempi=;tempi+1=0;cc_search(temp);/*对保留字、标识符进行处理*/else if (chin=A)&(chin=a)&(chin=A)&(chin=a)&(chin=0)&(chin=0)&(chin=0)&(chin=9)|(chin=.)if (chin=.)dotcount+;if (dotcount=2)break;tempi+=chin;chin=fgetc(fin);tempi=0;if (dotcount=1)intb_search(temp);elseinta_search(temp);if (chin!=EOF)fseek (fin,-1L,SEEK_CUR);/*对注释进行处理*/else if (chin=/)chin=fgetc(fin);if (chin=)fout=fopen(output.txt,a);fprintf(fout,2t30tt/=n);fclose(fout);else if (chin!=*)fout=fopen(output.txt,a);fprintf(fout,2t4tt/n);fclose(fout);fseek(fin,-1L,SEEK_CUR);else if (chin=*)count=0;chin=fgetc(fin);fout=fopen(defination.txt,a);fprintf(fout,/*);while (count!=2)count=0;while (chin!=*)fprintf(fout,%c,chin);chin=fgetc(fin);count+;fprintf(fout,%c,chin);chin=fgetc(fin);if (chin=/)count+;fprintf(fout,%cn,chin);elsefprintf(fout,%c,chin);chin=fgetc(fin);/*对运算符、分隔符进行处理*/elseint time=0;int firstblood=0;temp0=chin;chin=fgetc(fin);if (chin!=EOF)temp1=chin;temp2=0;for (time=1;time=30;time+)if (strcmp(temp,key2time)=0)firstblood=1;if (xx2time=0)fout=fopen(key2.txt,a);fprintf(fout,2t%dtt%sn,time,temp);fclose(fout);xx2time=1;fout=fopen(output.txt,a);fprintf(fout,2t%dtt%sn,time,temp);fclose(fout);break;if (firstblood!=1)fseek(fin,-1L,SEEK_CUR);temp1=0;for (time=1;time=9;time+)if (strcmp(temp,key1time)=0)if (xx1time=0)fout=fopen(key1.txt,a);fprintf(fout,1t%dtt%sn,time,temp);fclose(fout);xx1time=1;fout=fopen(output.txt,a);fprintf(fout,1t%dtt%sn,time,temp);fclose(fout);break;for (time=1;time=30;time+)if (strcmp(temp,key2time)=0)if (xx2time=0)fout=fopen(key2.txt,a);fprintf(fout,2t%dtt%sn,time,temp);fclose(fout)