treeform.cs

关于CMM语言的解释器

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.IO;
using System.Text.RegularExpressions;

namespace CmmInterpretor
{
    public partial class TreeForm : Form
    {
        public TreeForm()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Dispose();
        }

        //获得语法树
        public TreeView getTree()
        {
            return treeView1;
        }

        //全部展开
        private void button2_Click(object sender, EventArgs e)
        {
            treeView1.ExpandAll();
        }

        //全部收缩
        private void button3_Click(object sender, EventArgs e)
        {
            treeView1.CollapseAll();
        }

        //关闭提示框
        private void button4_Click(object sender, EventArgs e)
        {
            textBox1.Visible = false;
            button4.Visible = false;
            button4.Enabled = false;
        }

        //展开两层
        private void button5_Click(object sender, EventArgs e)
        {
            treeView1.CollapseAll();
            foreach (TreeNode node_0 in treeView1.Nodes)
            {
                node_0.Expand();
                foreach (TreeNode node_1 in node_0.Nodes)
                {
                    node_1.Expand();
                }
            }
        }

        //保存语法树
        private void button6_Click(object sender, EventArgs e)
        {
            if (treeView1 == null)
            {
                MessageBox.Show(" 语法树不存在! ", "出错", MessageBoxButtons.OK);
                return;
            }
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.DefaultExt = "xml";
            sfd.Filter = "XML files (*.xml)|*.xml";
            DialogResult answer = sfd.ShowDialog();
            if (answer != DialogResult.Cancel)
            {
                Tree tf = new Tree();
                XmlDocument treeXml = tf.Tree2XML(ref treeView1);
                if (treeXml != null)
                    treeXml.Save(sfd.FileName);
            }
        }

        //打开语法树
        private void openTreeButton_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.DefaultExt = "xml";
            openFileDialog1.Filter = "XML Files (*.xml)|*.xml";
            DialogResult answer = openFileDialog1.ShowDialog();
            if (answer == DialogResult.Cancel) return;
            TextReader tr = File.OpenText(openFileDialog1.FileName);
            Tree tsl = new Tree();
            string grammerTree = tr.ReadToEnd();
            tr.Close();
            if (grammerTree.Contains("<") || grammerTree.Contains("&"))
            {
                grammerTree = Regex.Replace(grammerTree, @"&lt;", "<").ToString();
                grammerTree = Regex.Replace(grammerTree, @"&amp;", "&").ToString();
            }

            treeView1.Nodes.Clear();
            tsl.CreateTree(grammerTree, treeView1.Nodes);
            treeView1.ExpandAll();
        }
    }
}