/*
在main.cs中调用，格式化输出词法分析结果
*/
public void formateResult(string codeIn, string lResult)
{
string[] lineArr = Regex.Split(codeIn.Trim(), "\r\n", RegexOptions.IgnoreCase);
string[] resultArr = Regex.Split(lResult, "\r\n", RegexOptions.IgnoreCase);
int resultIndex = 0;
Regex regex;
for (int i = 0; i < lineArr.Length; i++)
{
//创建一行，并设置属性
DataGridViewRow dr = new DataGridViewRow();
dr.CreateCells(lGrid);
dr.Cells[0].Value = "行:" + (i + 1);
dr.Cells[1].Value = lineArr[i].Trim();
dr.Height = 20;
if (lineArr[i].Trim() != "")
dr.DefaultCellStyle.BackColor = System.Drawing.Color.Silver;
lGrid.Rows.Add(dr);
regex = new Regex("行:" + (i+1)+".*");
while (regex.IsMatch(resultArr[resultIndex]))
{
string[] sublineArr = Regex.Split(resultArr[resultIndex], "\t\t", RegexOptions.IgnoreCase);
DataGridViewRow drSub = new DataGridViewRow();
drSub.CreateCells(lGrid);
drSub.Cells[0].Value = " " + (i + 1);
drSub.Cells[1].Value = sublineArr[1].Trim();
drSub.Cells[2].Value = sublineArr[2].Trim();
drSub.Height = 18;
lGrid.Rows.Add(drSub);
resultIndex++;
}
}
//人为加入一个Token:EOF，作为结束符号
Token temp = new Token("EOF", keyTable["EOF"], line);
Global.tokenArr.Add(temp);
}
public Token(Token tmp)
{
this.src = tmp.src;
this.type = tmp.type;
this.lineNum = tmp.lineNum;
}
//匹配return语句并返回 返回值类型
private void Return(int id)
{
int return_record = n;
++n;//return
int type = Global.tokenArr[n].type;
if (isExpr(type))
{
Expr();
HandleExp();
}
Token t = new Token("" + Global.idTable[Global.tokenArr[id].src].numOfVar, (int)Symbol.INTEGER, Global.idTable[Global.tokenArr[id].src].numOfVar);
exprArr.Add(t);//参数个数
exprArr.Add(Global.tokenArr[return_record]);
if (!isInMain)
HandleExp();
Reset();
++n;//;
}
/*
将读取的符号放入Token数组中（在此处判断sym的类型）
*/
private void addToToken(string s)
{
//值、类型、行号
Token temp = new Token(s, -1, -1);//缺省类型为-1(错误类型)
if (keyTable.ContainsKey(s)) //为关键字、操作符、非空界符
{
temp.type = keyTable[s];
}
else if (isIdent(s)) //为标识符
{
temp.type = (int)Symbol.IDENT;
}
else if (isInt(s)) //为整数
{
temp.type = (int)Symbol.INTEGER;
}
else if (isReal(s)) //为实数
{
temp.type = (int)Symbol.REALNUM;
}
temp.lineNum = line;
Global.tokenArr.Add(temp);
}
private void printMidcode_ArrAsn()
{
List<Token> tmpExprArr = new List<Token>(exprArr);
int indexNum = 0;
Token arr_id = new Token(exprArr[exprArr.Count - 1]);//不能直接赋值，要深复制
Token asn = new Token("=", (int)Symbol.BECOMES, arr_id.lineNum);
while (tmpExprArr.Count > 1)//到最后只剩一个id
{
Reset();
Token index = new Token("" + indexNum, (int)Symbol.INTEGER, arr_id.lineNum);
Token id = new Token(arr_id);
exprArr.Add(index);
exprArr.Add(id);
exprArr.Add(tmpExprArr[0]);
exprArr.Add(asn);
HandleExp();
tmpExprArr.RemoveAt(0);
++indexNum;
}
}
private bool isReal(Token token)
{
bool result = false;
if (token.type == (int)Symbol.IDENT && Global.idTable.ContainsKey(token.src))
result = Global.idTable[token.src].type == (int)Symbol.REAL;//为1说明是浮点类型
else if(token.src[0] == '@' && token.src.Length > 1)
result = token.src[1] == 'R';//为临时real变量
else
result = token.type == (int)Symbol.REALNUM;
return result;
}
private void HandleId(Token token, int type, int len = -1, int assign = -1)
{
ID id = new ID(token.src, ID.GetCount(), type, len, assign);
Global.idTable.Add(token.src, id);
}
private string GetFrontFix(Token t)
{
if (isReal(t))
return "R";
else
return "I";
}
private void HandleId(Token token, int type, int len = -1, int assign = -1)
{
if (Global.idTable.ContainsKey(token.src))
{
++errNum;
errStr += "line " + token.lineNum + " : \t变量 \"" + token.src + "\" 重复定义\r\n";
return;
}
ID id = new ID(token.src, ID.GetCount(), type, len, assign);
Global.idTable.Add(token.src, id);
//ID.RefreshCount(len);
}