scanner.c

完成Java的此法分析功能

				state = 19;
				BackSpace(&char1);
			}
			break;
		case 21:
			char1 = NextChar();
			if (char1 == '=')
				state = 23;
			else 
			{
				state = 22;
				BackSpace(&char1);
			}
			break;
		case 24: case 62: case 66: case 92:               //0x11c
            state = 0;
			value = 0x11c;
			AtLast(value,&char1,1);
			break;  // ~,++,--,!
		case 25:
			char1 = NextChar();
			if (char1 == '=')
				state = 28;
			else if (char1 == '|')
				state = 27;
			else 
			{
				state = 26;
				BackSpace(&char1);
			}
			break;
		case 26:                 //0x114
	        state = 0;
			value = 0x114;
			AtLast(value,&char1,1);
			break;  // |
		case 27:                 //0x112
			state = 0;
			value = 0x112;
			AtLast(value,&char1,1);
			break;  // ||
		case 29:
			char1 = NextChar();
			if (char1 == '&')
				state = 31;
			else if (char1 == '=')
				state = 32;
			else 
			{
				state = 30;
				BackSpace(&char1);
			}
			break;
		case 30:                     //0x116
			state = 0;
			value = 0x116;
			AtLast(value,&char1,1);
			break;  // &
		case 31:                    //0x113
			state = 0;
			value = 0x113;
			AtLast(value,&char1,1);
			break;  // &&
		case 33:
			char1 = NextChar();
			if (char1 == '=')
				state = 35;
			else 
			{
				state = 34;
				BackSpace(&char1);
			}
			break;
		case 34:                     //0x115
            state = 0;
			value = 0x115;
			AtLast(value,&char1,1);
			break;  // ^
		case 36:
            char1 = NextChar();
			if (char1 == '=')
				state = 38;
			else 
			{
				state = 37;
				BackSpace(&char1);
			}
			break;
		case 38: case 40:                    //0x117
			state = 0;
			value = 0x117;
			AtLast(value,&char1,1);
			break;  // ==,!=
		case 39:
			char1 = NextChar();
			if (char1 == '=')
				state = 40;
			else 
			{
				state = 92;
				BackSpace(&char1);
			}
			break;
		case 41:                    // 0x111
		    state = 0;
			value = 0x111;
			AtLast(value,&char1,1);
			break;  // ?:
		case 43:
		    char1 = NextChar();
			if (char1 == '=')
				state = 45;
			else if (char1 == '/')
				state = 46;
			else if (char1 == '*')
				state = 48;
			else 
			{
				state = 44;
				BackSpace(&char1);
			}
			break;
		case 46:
			while (char1 != '\n' && char1 != NULL)
				char1 = NextChar();
			state = 47;
			BackSpace(&char1);
			break;
		case 47: case 50:               //0x101 表示注释
			state = 0;
			value = 0x101;
			AtLast(value,&char1,0);
			break;  // //,/*
		case 48:
			char1 = NextChar();
			while (char1 != '*' && char1 != NULL) 
			{
                if (char1 == '\n')
					line++;
				char1 = NextChar();
			}
			if (char1 == NULL) 
			{
				state = 100;
				BackSpace(&char1);
			}
			else state = 49;
			break;
		case 49:
			char1 = NextChar();
			if (char1 == '/')
				state = 50;
			else state = 48;
			if (char1 == '\n')
				line++;
			break;
		case 51:                      //0x120
			state = 0;
			value = 0x120;
			AtLast(value,&char1,1);
			break;  // ,
		case 52:                      //0x122
			state = 0;
			value = 0x121;
			AtLast(value,&char1,1);
			break;  // ;
		case 53:                  //0x121
			state = 0;
			value = 0x121;
			AtLast(value,&char1,1);
			break;  // {,}
		case 54: case 84:                     //0x11d
			state = 0;
			value = 0x11d;
			AtLast(value,&char1,1);
			break;  // [,],(,),.
		case 55:
		    char1 = NextChar();
			while (char1 != NULL && char1 != '"' && char1 != '\n' && char1 != '\\')
				char1 = NextChar();
			if (char1 == NULL || char1 == '\n') 
			{
				state = 100;
				BackSpace(&char1);
			}
			else if (char1 == '\\') 
			{
				char1 = NextChar();
				if (char1 == NULL || char1 == '\n') 
				{
                    state = 100;
				    BackSpace(&char1);
				}
                else state = 55;
			}
			else if (char1 == '"')
			    state = 56;
			break;
		case 56:                    //0x109
			state = 0;
			value = 0x109;
			AtLast(value,&char1,1);
			break;  // 字符串
		case 57:
			char1 = NextChar();
			if (char1 == '\n' || char1 == NULL || char1 == '\'') 
			{
				state = 100;
				BackSpace(&char1);
			}
			else if (char1 == '\\')
				state = 93;
			else state = 58;
			break;
		case 58:
			char1 = NextChar();
			if (char1 == '\'')
				state = 59;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 59:                   //0x106
			state = 0;
			value = 0x106;
			AtLast(value,&char1,1);
			break;  // 字符型
		case 60:
			char1 = NextChar();
			if (char1 == '+')
				state = 62;
			else if (char1 == '=')
				state = 63;
			else 
			{
				state = 61;
				BackSpace(&char1);
			}
			break;
		case 61: case 65:                     //0x11a
			state = 0;
			value = 0x11a;
			AtLast(value,&char1,1);
			break;  // +,-
		case 64:
			char1 = NextChar();
			if (char1 == '-')
				state = 66;
			else if (char1 == '=')
				state = 67;
			else 
			{
				state = 65;
				BackSpace(&char1);
			}
			break;
		case 68:
			char1 = NextChar();
			if (char1 == 'x' || char1 == 'X')
				state = 69;
			else if (char1 <= '7' && char1 >= '0')
				state = 72;
			else if (char1 == '.')
				state = 77;
			else 
			{
				state = 74;
				BackSpace(&char1);
			}
			break;
		case 69:
			char1 = NextChar();
            if ((char1 >='a' && char1 <= 'f') || isdigit(char1) || (char1 >='A' && char1 <= 'F'))
				state = 70;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 70:
			char1 = NextChar();
			while ((char1 >='a' && char1 <= 'f') || isdigit(char1) || (char1 >='A' && char1 <= 'F'))
				char1 = NextChar();
			if (char1 == 'L' || char1 == 'l')
				state = 85;
			else 
			{
			    state = 71;
			    BackSpace(&char1);
			}
			break;
		case 72:
			char1 = NextChar();
			while (char1 >='0' && char1 <= '7')
				char1 = NextChar();
			if (char1 == 'L' || char1 == 'l')
				state = 87;
			else if (char1 == 'f' || char1 == 'F')
				state = 88;
			else 
			{
			    state = 73;
			    BackSpace(&char1);
			}
			break;
		case 71: case 73: case 74: case 76: case 82: case 85: case 86: case 87:            //0x107
			state = 0;
			value = 0x107;
			AtLast(value,&char1,1);
			break;  // 16进制,8进制,0,长整型
		case 75:
			char1 = NextChar();
			while (isdigit(char1))
				char1 = NextChar();
			if (char1 == 'L' || char1 == 'l')
				state = 76;
			else if (char1 == '.')
				state = 77;
			else if (char1 == 'e' || char1 == 'E')
				state = 79;
			else if (char1 == 'F' || char1 == 'f')
				state = 86;
			else 
			{
				state = 82;
				BackSpace(&char1);
			}
			break;
		case 77:
			char1 = NextChar();
			while (isdigit(char1))
				char1 = NextChar();
			if (char1 == 'e' || char1 == 'E')
				state = 79;
			else if (char1 == 'f' || char1 == 'F')
				state = 89;
			else 
			{
				state = 78;
				BackSpace(&char1);
			}
			break;
		case 78: case 81: case 88: case 89: case 90:                  //0x108
			state = 0;
			value = 0x108;
			AtLast(value,&char1,1);
			break; // 浮点,E
		case 79:
			char1 = NextChar();
			if (isdigit(char1))
				state = 80;
			else if (char1 == '+' || char1 == '-')
				state = 91;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 80:
			char1 = NextChar();
			while (isdigit(char1))
				char1 = NextChar();
			if (char1 == 'F' || char1 == 'f')
				state = 90;
			else 
			{
			    state = 81;
			    BackSpace(&char1);
			}
			break;
		case 83:
			char1 = NextChar();
			if (isdigit(char1))
				state = 77;
			else 
			{
				state = 84;
				BackSpace(&char1);
			}
			break;
		case 91:
			char1 = NextChar();
			if (isdigit(char1))
				state = 80;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 93:
			char1 = NextChar();
			if (char1 == 't' || char1 == 'b' || char1 == 'n' || char1 == 'r' || char1 == '\'' || char1 == '\\' || char1 == 'f')
				state = 58;
			else if (char1 >= '0' && char1 <= '7')
				state = 94;
			else if (char1 == 'u')
				state = 95;
			else 
			{
                state = 100;
				BackSpace(&char1);
			}
			break;
		case 94:
            char1 = NextChar();
			ct = 0;
			while (ct <= 2 && char1 >= '0' && char1 <= '7') 
			{
				char1 = NextChar();
			    ct++;
			}
			if (char1 == '\'')
				state = 59;
			else {
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 95:
			char1 = NextChar();
			if ((char1 >= '0' && char1 <= '9') || (char1 >= 'a' && char1 <= 'f') || (char1 >= 'A' && char1 <= 'F'))
				state = 96;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 96:
			ct = 0;
			char1 = NextChar();
			while ( ct <= 3 && (char1 >= '0' && char1 <= '9') || (char1 >= 'a' && char1 <= 'f') || (char1 >= 'A' && char1 <= 'F')) 
			{
				char1 = NextChar();
			    ct++;
			}
			if (char1 == '\'')
				state = 59;
			else 
			{
				state = 100;
				BackSpace(&char1);
			}
			break;
		case 100:                    //0x100
			state = 0;
			value = 0x100;
			AtLast(value,&char1,1);
			break;  // error
		}
	}
	if (word_row != 0)
	    WriteLine();
    WriteTotalWord();
}

////////////////////////////////////////////////////////////////////////////////////////////////////

WriteTotalWord() 
{                 //分析完成，输出总字符数
	fprintf(fp_write," Sum of words in this source file is:%d.\n***************************************************\n",word_total);
	printf(" Sum of words in this source file is:%d.\n*****************************************************\n",word_total);
	fclose(fp_write);
}

/////////////////////////////////////////////////////////////////////////////////////////////////////

main()
{   
	strcpy(FileName,"Test-Lexcial.java");
	OpenFile();        // 打开文件
	PassLetter(fp);       // 完成分析前的准备工作
	Analysis();        // 分析过程
    CloseFile();       // 关闭文件
}