private CodeLine ReadCodeLine()
{
CodeLine code = new CodeLine(currentLine, (int)fs.Position);
if (!gotoPosLine.ContainsKey((int)fs.Position))
{
// 位置 下标
gotoPosLine.Add((int)fs.Position, currentLine);
}
int codeLength = 0;
int codeOffset = 0;
if (script.version == 2)
{
// [xx] [xx]
// opcode len
code.opcodeIndex = br.ReadByte();
codeLength = br.ReadByte() * 2;
codeOffset += 2;
}
else if (script.version == 3)
{
// [xx xx] [xx]
// len opcode
codeLength = br.ReadUInt16() - 2;
code.opcodeIndex = br.ReadByte();
codeOffset++;
}
long savePosition = fs.Position;
fs.Seek(-codeOffset, SeekOrigin.Current);
code.bytes = br.ReadBytes(codeLength);
fs.Seek(savePosition, SeekOrigin.Begin);
if (!opcodeDict.ContainsKey(code.opcodeIndex))
{
throw new Exception("未知的opcode!");
}
code.opcode = opcodeDict[code.opcodeIndex].opcode;
int infoCount = 0;
CodeInfo info = null;
if (script.version == 2)
{
info = new CodeInfo(0);
info.count = 1;
info.data = new UInt16[1];
info.data[0] = br.ReadUInt16();
//fs.Seek(-2, SeekOrigin.Current);
codeOffset += 2;
code.info = info;
}
else if (script.version == 3)
{
info = new CodeInfo(br.ReadByte());
codeOffset++;
infoCount = info.count;
// END指令info.count需要减一
if (code.opcode == "END")
{
infoCount--;
}
else if (code.opcode == "LOG" && infoCount == 7)
{
infoCount = 3;
}
while (codeLength - 2 < infoCount * 2)
{
infoCount--;
}
info.data = new UInt16[infoCount];
for (int i = 0; i < infoCount; i++)
{
info.data[i] = br.ReadUInt16();
codeOffset += 2;
}
code.info = info;
}
// 参数类型列表
code.paramTypes = opcodeDict[code.opcodeIndex].param.ToArray();
// 读取已知参数数据
code.paramDatas = ReadParamData(code.paramTypes, codeLength, ref codeOffset);
// 处理未知参数数据
while (codeOffset + 1 < codeLength)
{
byte[] temp = br.ReadBytes(2);
codeOffset += 2;
code.paramDatas.Add(new ParamData(DataType.Byte2, temp, ScriptUtil.Byte2Hex(temp, false, true)));
}
if (codeOffset < codeLength)
{
byte[] temp = br.ReadBytes(1);
codeOffset++;
if (script.version == 2 && temp[0] == 0x00)
{
// 最后多出的单字节，若为0x00则舍弃
}
else
{
code.paramDatas.Add(new ParamData(DataType.Byte, temp, ScriptUtil.Byte2Hex(temp, false, true)));
}
}
// 长度非偶数，最后会有补位
if (codeLength % 2 != 0)
{
br.ReadByte();
}
// 判断是否含跳转
foreach (var param in code.paramDatas)
{
if (param.type == DataType.Position)
{
code.isPosition = true;
labelPos.Add((int)(uint)param.value);
}
}
currentLine++;
return(code);
}
public void ReadScript_SetCodeLine(CodeLine code)
{
script.lines.Add(code);
}