public string clsHandle(string exp)
{
string result = "exp";
char[] compair = { '+', '-', '*', '/' };
string[] exptmp = exp.Split(',');
List <string> rescom = new List <string>();
foreach (var item in exptmp)
{
#region 进入四则运算判断
if (item.IndexOfAny(compair, 0) > -1)
{
try
{
GrammerAnalyzer ga = new GrammerAnalyzer(item);
ga.Analyze();
Token[] toks = ga.TokenList;
SyntaxAnalyzer sa = new SyntaxAnalyzer(toks);
sa.Analyze();
Calculator calc = new Calculator(sa.SyntaxTree);
double value = calc.Calc();
rescom.Add(value.ToString());//加入到list中
}
catch
{
}
}
else
{
rescom.Add(item.ToString());
}
#endregion
}
result = string.Join(",", rescom);
return(result);
}
/// <summary>
/// 开始执行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void executeToolStripMenuItem_Click(object sender, EventArgs e)
{
ClearText();
//输入内容不为空
if (!inputRichTextBox.Text.Equals(""))
{
AddInformation("开始进行词法分析...");
//先进行词法分析
lexicalRichTextBox.Clear();
errorListView.Items.Clear();
string content = inputRichTextBox.Text;
TokenBuilder tb = new TokenBuilder(content);
while (tb.hasMoreLines())
{
lexicalRichTextBox.AppendText(tb.getCurrenLineNumber() + ": "
+ tb.getCurrentLine() + "\n");
foreach (Token t in tb.nextTokens())
{
if (t.GetTokenType() != TokenType.ANNOTATION)
{
lexicalRichTextBox.AppendText("\t" + t.ToString() + "\n");
}
}
}
AddInformation("词法分析结束...");
//存在词法分析错误
if (tb.hasLexicalError())
{
AddInformation("存在词法错误等待修改...");
MessageBox.Show("程序存在错误, 请先检查", "Interpreter",
MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
List <Error> errors = tb.Errors;
for (int i = 0; i < errors.Count; i++)
{
Error error = errors[i];
ListViewItem item = new ListViewItem(new String[] { error.Dec, error.LineNo + "", i + 1 + "" });
errorListView.Items.Add(item);
}
}
//词法分析不存在错误进行语法分析
else
{
AddInformation("开始进行语法分析...");
//grammarRichTextBox.Clear();
GrammerAnalyzer ga = new GrammerAnalyzer(content);
Node tree = ga.Analyze();
PrintNode(tree, "");
AddInformation("语法分析结束...");
if (ga.HasGrammarError())
{
AddInformation("存在语法错误等待修改...");
MessageBox.Show("程序存在错误, 请先检查", "Interpreter",
MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
List <Error> errors = ga.Errors;
for (int i = 0; i < errors.Count; i++)
{
Error error = errors[i];
ListViewItem item = new ListViewItem(new String[] { error.Dec, error.LineNo + "", i + 1 + "" });
errorListView.Items.Add(item);
}
}
//当语法分析不存在错误时进行解释执行
else
{
AddInformation("开始解释执行...");
intermediateTabPage.Focus();
intermediateTabPage.Show();
String result = "";
intermediateRichTextBox.Clear();
AddInformation("中间代码生成中...");
List <TempCode> TreeNode = new MiddleCode(content).getMiddleCode();
AddInformation("执行...");
new Execute(content).Run();
for (int i = 0; i < TreeNode.Count; ++i)
{
result += "(" + TreeNode[i].fc.op + "," + TreeNode[i].fc.arg1 + "," + TreeNode[i].fc.arg2 + ","
+ TreeNode[i].fc.result + ")" + "\n";
}
//List<Table> list = new MiddleCode(content).getTable();
//for (int i = 0; i < list.Count; ++i)
//{
// result += list[i].str + "," + list[i].value + "," + list[i].type + "\n";
//}
intermediateRichTextBox.Text = result;
}
AddInformation("执行完毕...");
}
}
//输入程序为空
else
{
MessageBox.Show("程序存在错误, 请先检查", "Interpreter",
MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
inputRichTextBox.Focus();
}
/// <summary>
/// 先进行词法分析，若词法分析无误则进行语法语义分析
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void grammarToolStripMenuItem_Click(object sender, EventArgs e)
{
ClearText();
//输入内容不为空
AddInformation("开始进行词法分析...");
if (!inputRichTextBox.Text.Equals(""))
{
lexicalRichTextBox.Clear();
errorListView.Items.Clear();
string content = inputRichTextBox.Text;
TokenBuilder tb = new TokenBuilder(content);
while (tb.hasMoreLines())
{
lexicalRichTextBox.AppendText(tb.getCurrenLineNumber() + ": "
+ tb.getCurrentLine() + "\n");
foreach (Token t in tb.nextTokens())
{
if (t.GetTokenType() != TokenType.ANNOTATION)
{
lexicalRichTextBox.AppendText("\t" + t.ToString() + "\n");
}
}
}
AddInformation("词法分析结束...");
//存在词法分析错误
if (tb.hasLexicalError())
{
AddInformation("词法分析错误...");
MessageBox.Show("程序存在错误, 请先检查", "Interpreter",
MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
List <Error> errors = tb.Errors;
for (int i = 0; i < errors.Count; i++)
{
Error error = errors[i];
ListViewItem item = new ListViewItem(new String[] { error.Dec, error.LineNo + "", i + 1 + "" });
errorListView.Items.Add(item);
}
}
//词法分析不存在错误进行语法分析
else
{
AddInformation("开始进行语法分析...");
//grammarRichTextBox.Clear();
GrammerAnalyzer ga = new GrammerAnalyzer(content);
Node tree = ga.Analyze();
PrintNode(tree, "");
//grammarTabPage.Focus();
//grammarTabPage.Show();
if (ga.HasGrammarError())
{
AddInformation("存在语法错误等待修改...");
List <Error> errors = ga.Errors;
for (int i = 0; i < errors.Count; i++)
{
Error error = errors[i];
ListViewItem item = new ListViewItem(new String[] { error.Dec, error.LineNo + "", i + 1 + "" });
errorListView.Items.Add(item);
}
}
}
}
//输入程序为空
else
{
MessageBox.Show("程序存在错误, 请先检查", "Interpreter",
MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
inputRichTextBox.Focus();
}
