private int ReadUnicode(MiniBuffer buff)
{
MoveNext();
var c1 = Current;
var n1 = UnicodeNumber(Current);
if (n1 == -1)
{
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
return(2);
}
MoveNext();
var c2 = Current;
var n2 = UnicodeNumber(Current);
if (n2 == -1)
{
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
return(3);
}
MoveNext();
var c3 = Current;
var n3 = UnicodeNumber(Current);
if (n3 == -1)
{
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
buff.AddChar(c3);
return(4);
}
MoveNext();
var c4 = Current;
var n4 = UnicodeNumber(Current);
if (n4 == -1)
{
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
buff.AddChar(c3);
buff.AddChar(c4);
return(5);
}
buff.AddChar((char)(n1 * 0x1000 + n2 * 0x100 + n3 * 0x10 + n4));
return(5);
}
private string ReadString(int index, char quot, MiniBuffer buff)
{
do
{
if (Current == '\\')//是否是转义符
{
if ((_WordChars[Current] & 16) == 0)
{
ThrowException();
}
buff.AddString(_p, index, _position - index);
MoveNext();
switch (Current)
{
case 't':
buff.AddChar('\t');
index = _position + 1;
break;
case 'n':
buff.AddChar('\n');
index = _position + 1;
break;
case 'r':
buff.AddChar('\r');
index = _position + 1;
break;
case '0':
buff.AddChar('\0');
index = _position + 1;
break;
case 'f':
buff.AddChar('\f');
index = _position + 1;
break;
case 'u':
index = _position + ReadUnicode(buff);
break;
default:
index = _position;
break;
}
}
MoveNext();
} while (Current != quot);//是否是结束字符
string str;
buff.AddString(_p, index, _position - index);
str = buff.ToString();
buff.Dispose();
MoveNext();
return(str);
}
public static MiniBuffer Create(char *p)
{
if (_Instance == null)
{
_Instance = new MiniBuffer();
}
_Instance._p = p;
_Instance._index = 0;
_Instance._position = 0;
return(_Instance);
}
/// <summary>
/// 读取字符串
/// </summary>
public string ReadString()
{
if (IsEnd()) //已到结尾
{
ThrowException();
}
var quot = Current;
if (quot != '"' && quot != '\'')
{
ThrowException();
}
MoveNext();
if (Current == quot)
{
MoveNext();
return("");
}
var index = _position;
do
{
if (Current == '\\') //是否是转义符
{
char *p = stackalloc char[255];
return(ReadString(index, quot, MiniBuffer.Create(p)));
}
MoveNext();
} while (Current != quot); //是否是结束字符
var str = new string(_p, index, _position - index);
MoveNext();
return(str);
}
/// <summary> 读取字符串
/// </summary>
public string ReadString()
{
if (IsEnd())//已到结尾
{
ThrowException();
}
Char quot = _Current;
if (quot != '"' && quot != '\'')
{
ThrowException();
}
MoveNext();
if (_Current == quot)
{
MoveNext();
return("");
}
var index = _Position;
MiniBuffer buff = null;
do
{
if (_Current == '\\')//是否是转义符
{
if ((WordChars[_Current] & 16) == 0)
{
ThrowException();
}
if (buff == null)
{
//锁定指针
char *p = stackalloc char[255];
buff = new MiniBuffer(p);
}
buff.AddString(_P, index, _Position - index);
MoveNext();
switch (_Current)
{
case 't':
buff.AddChar('\t');
index = _Position + 1;
break;
case 'n':
buff.AddChar('\n');
index = _Position + 1;
break;
case 'r':
buff.AddChar('\r');
index = _Position + 1;
break;
case '0':
buff.AddChar('\0');
index = _Position + 1;
break;
case 'f':
buff.AddChar('\f');
index = _Position + 1;
break;
default:
index = _Position;
break;
}
}
MoveNext();
} while (_Current != quot);//是否是结束字符
string str;
if (buff == null)
{
str = new string(_P, index, _Position - index);
}
else
{
buff.AddString(_P, index, _Position - index);
str = buff.ToString();
}
MoveNext();
return(str);
}
private int ReadUnicode(MiniBuffer buff) {
MoveNext();
var c1 = Current;
var n1 = UnicodeNumber(Current);
if (n1 == -1) {
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
return 2;
}
MoveNext();
var c2 = Current;
var n2 = UnicodeNumber(Current);
if (n2 == -1) {
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
return 3;
}
MoveNext();
var c3 = Current;
var n3 = UnicodeNumber(Current);
if (n3 == -1) {
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
buff.AddChar(c3);
return 4;
}
MoveNext();
var c4 = Current;
var n4 = UnicodeNumber(Current);
if (n4 == -1) {
buff.AddChar('\\');
buff.AddChar('u');
buff.AddChar(c1);
buff.AddChar(c2);
buff.AddChar(c3);
buff.AddChar(c4);
return 5;
}
buff.AddChar((char)(n1 * 0x1000 + n2 * 0x100 + n3 * 0x10 + n4));
return 5;
}
private string ReadString(int index, char quot, MiniBuffer buff) {
do {
if (Current == '\\')//是否是转义符
{
if ((_WordChars[Current] & 16) == 0) {
ThrowException();
}
buff.AddString(_p, index, _position - index);
MoveNext();
switch (Current) {
case 't':
buff.AddChar('\t');
index = _position + 1;
break;
case 'n':
buff.AddChar('\n');
index = _position + 1;
break;
case 'r':
buff.AddChar('\r');
index = _position + 1;
break;
case '0':
buff.AddChar('\0');
index = _position + 1;
break;
case 'f':
buff.AddChar('\f');
index = _position + 1;
break;
case 'u':
index = _position + ReadUnicode(buff);
break;
default:
index = _position;
break;
}
}
MoveNext();
} while (Current != quot);//是否是结束字符
string str;
buff.AddString(_p, index, _position - index);
str = buff.ToString();
buff.Dispose();
MoveNext();
return str;
}
