using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;
namespace wordanylysis{ public partial class wordanalysis : Form { public wordanalysis() { InitializeComponent(); }
private void okbutton_Click(object sender, EventArgs e) { //得到字符数组 char[] getch = textToCharArray(); //将得到的字符数组转换成分析后的单词数组 string[] stringArray = charArrayToStringArray(getch); string[,] twoStringArray = stringArrayToTwoStringArray(stringArray); printString(twoStringArray ); }
private void clearbutton_Click(object sender, EventArgs e) { this.textBox1.Clear(); }
private void exitbutton_Click(object sender, EventArgs e) { Application.Exit(); }
private char[] textToCharArray() { string stringTemp; stringTemp = this.textBox1.Text; char[] getch = stringTemp.ToCharArray();//要处理的字符都在getch这个数组中。 return getch; } private void stringToArrayString(ref string[] stringArrange, string st) {
if (stringArrange[0] == "") { stringArrange[0] = st; } else { string[] oldA = stringArrange;//刚得到的字符串 int i = oldA.Length + 1; stringArrange = new string[i];//申请一个长一个的字符数组。 oldA.CopyTo(stringArrange, 0);//将先前的字符数组考到现在这个数组中。 stringArrange[stringArrange.Length - 1] = st; } } private void oneArrayToTwo(ref string[,] twoArray, ref int j) {
string[,] tempArray = twoArray; twoArray = new string[2, j + 2]; for (int x = 0; x < 2; x++) { for (int y = 0; y < j + 1; y++) { twoArray[x, y] = tempArray[x, y]; } } j = j + 1; } private string[,] stringArrayToTwoStringArray(string[] stringArray) { //存放单词标识后的结果。 string[,] twoArray = new string[2, 1]; //单词的标志 int j = 0;
//每循环一次，把一个单词归于一类，即前面加上一个数字。 for (int i = 0; i < stringArray.Length; i++) { //保留字 1 if (stringArray[i] == "main" || stringArray[i] == "int" || stringArray[i] == "float" || stringArray[i] == "printf" || stringArray[i] == "if" || stringArray[i] == "for" || stringArray[i] == "while" || stringArray[i] == "do" || stringArray[i] == "return" || stringArray[i] == "break" || stringArray[i] == "continue") { twoArray[0, j] = "1"; twoArray[1, j] = stringArray[i]; this.oneArrayToTwo(ref twoArray, ref j); } //运算符 2 else if (stringArray[i] == "+" || stringArray[i] == "-" || stringArray[i] == "*" || stringArray[i] == "/" || stringArray[i] == ">" || stringArray[i] == "<" || stringArray[i] == ">=" || stringArray[i] == "<=" || stringArray[i] == "!=" || stringArray[i] == "==" || stringArray[i] == "++" || stringArray[i] == "--" || stringArray[i] == "=") { twoArray[0, j] = "2"; twoArray[1, j] = stringArray[i]; this.oneArrayToTwo(ref twoArray, ref j); } //分隔符 3 else if (stringArray[i] == "(" || stringArray[i] == ")" || stringArray[i] == "{" || stringArray[i] == "}" || stringArray[i] == "[" // || stringArray[i] == "]" //|| stringArray[i] == "," // || stringArray[i] == ";" // || stringArray[i] == ":" // || stringArray[i] == "/"" // || stringArray[i] == "/*" /*|| stringArray[i] == "*"*/) { twoArray[0, j] = "3"; twoArray[1, j] = stringArray[i]; this.oneArrayToTwo(ref twoArray, ref j); } //数字 4 else if (stringArray[i].ToCharArray()[0] >= '0' && stringArray[i].ToCharArray()[0] <= '9') { twoArray[0, j] = "4";//数字 twoArray[1, j] = stringArray[i]; this.oneArrayToTwo(ref twoArray, ref j); } //其它 5(变量等) else { twoArray[0, j] = "5"; twoArray[1, j] = stringArray[i]; this.oneArrayToTwo(ref twoArray, ref j); } } return twoArray; } private void printString(string[,] twoStringArray) { //提示说明 this.textBox2.Text = "1 -> 保留字" + "/r/n" + "2 -> 运算符" + "/r/n" + "3 -> 分隔符" + "/r/n" + "4 -> 数字 " + "/r/n" + "5 -> 其它" + "/r/n"; //输出二维数组中的数据 for (int x = 0; x <twoStringArray.Length / 2; x++) { for (int y = 0; y < 2; y++) { this.textBox2.Text = this.textBox2.Text + twoStringArray[y, x] + " "; if (y == 1) { this.textBox2.Text = this.textBox2.Text + "/r/n"; } } } } private string[] charArrayToStringArray(char[] getch) { string[] stringArrange={""} ;//用这个字符串数组存放词法分析后得到的单词。 char charTemp; string stringSave = "";// 存放一个分析得到的单词 //一次循环得到一个单词。 for(int i = 0;i < getch.Length;i++) { charTemp = getch[i]; //begin with character if (charTemp >= 'a' && charTemp <= 'z' || charTemp >='A' && charTemp <= 'Z') { stringSave = charTemp.ToString(); i = i + 1; int test = 0;//判断循环是否结束，1 为结束。 while (test == 0) { charTemp = getch[i]; if (charTemp >= 'a' && charTemp <= 'z' || charTemp >= 'A' && charTemp <= 'Z' ) { stringSave = stringSave + charTemp.ToString(); i = i + 1; } else test = 1; }
} else stringToArrayString(ref stringArrange, stringSave);
stringSave = ""; if (charTemp >= '0' && charTemp <= '9' ) { stringSave = charTemp.ToString(); i = i + 1; int test = 0;//判断循环是否结束，1 为结束。 while (test == 0) { charTemp = getch[i]; if (charTemp >= '0' && charTemp <= '9') { stringSave = stringSave + charTemp.ToString(); i = i + 1; } else test = 1; }
} else stringToArrayString(ref stringArrange, stringSave);
stringSave = ""; if( charTemp == '(' ||charTemp == ')'||charTemp == '{'||charTemp == '}'||charTemp == '[' ) { stringSave = charTemp.ToString(); i = i + 1; int test = 0;//判断循环是否结束，1 为结束。 while (test == 0) { charTemp = getch[i]; if (charTemp == '(' || charTemp == ')' || charTemp == '{' || charTemp == '}' || charTemp == '[') { stringSave = stringSave + charTemp.ToString(); i = i + 1; } else test = 1; }
} else stringToArrayString(ref stringArrange, stringSave);
} return stringArrange;
} }}
