/// <summary>
/// Update block information
/// </summary>
/// <param name="block">Block</param>
/// <param name="previousBlock">Previous block</param>
public static void UpdateBlockInfo(this BlockStat block, Block currentBlock, BlockStat previousBlock)
{
bool firstTime = block.Size == 0;
var time = unixEpoch.AddMilliseconds(currentBlock.Timestamp);
if (!firstTime)
{
if (block.Hash.ToString() != currentBlock.Hash.ToString() || block.Size != currentBlock.Size || block.Timestamp != time)
{
throw new ArgumentException($"Fork on {block.Index}");
}
}
block.Size = currentBlock.Size;
block.Hash = currentBlock.Hash.ToString();
block.Timestamp = time;
block.Transactions.Update(currentBlock.Transactions);
block.ElapsedTime = (previousBlock == null ? TimeSpan.Zero : time - previousBlock.Timestamp);
if (block.Index != 0 && !firstTime)
{
// We can't access to Blockchain on GenesisBlock
block.MemPool.UpdateMemPool();
}
}
/// <summary>
/// Get block
/// </summary>
/// <param name="index">Index</param>
/// <returns>Get block</returns>
public BlockStat GetBlock(uint index)
{
if (!_blocks.Blocks.TryGetValue(index, out var ret))
{
ret = new BlockStat(index);
_blocks.Blocks[index] = ret;
return(ret);
}
return(ret);
}
/// <summary>
/// Log
/// </summary>
/// <param name="block">Block</param>
public void Log(BlockStat block)
{
if (_blocks.Blocks.TryRemove(block.Index - 5, out var remove))
{
// Save 5 blocks
}
using (var stream = IO.File.OpenWrite(Settings.Default.Path))
{
stream.Seek(Math.Max(0, stream.Length - 2), IO.SeekOrigin.Begin);
var str = block.ToJson() + "\n]";
if (stream.Position > 2)
{
str = ",\n" + str;
}
var data = Encoding.ASCII.GetBytes(str);
stream.Write(data, 0, data.Length);
}
}
/// <summary>
/// Get block
/// </summary>
/// <param name="block">Block</param>
/// <returns>Get block</returns>
public BlockStat GetBlock(Block block)
{
// Find
if (!_blocks.Blocks.TryGetValue(block.Index, out var ret))
{
ret = new BlockStat(block.Index);
_blocks.Blocks[block.Index] = ret;
}
// Update block info
if (_blocks.Blocks.TryGetValue(block.Index - 1, out var prev))
{
ret.UpdateBlockInfo(block, prev);
}
else
{
ret.UpdateBlockInfo(block, null);
}
return(ret);
}
} // NT_Block
private static void NT_Stat(out Stat s)
{
Symbol locSymbols = null;
Stat statList = null;
SrcPos sp = null;
s = null;
for (;;)
{
switch (Syn.Interpret())
{
case 0:
return;
case 1:
NT_IncDecAssignOrCallStat(out s);
break;
case 2:
NT_IfStat(out s);
break;
case 3:
NT_WhileStat(out s);
break;
case 4:
NT_BreakStat(out s);
break;
case 5:
NT_InputStat(out s);
break;
case 6:
NT_OutputStat(out s);
break;
case 7:
NT_DeleteStat(out s);
break;
case 8:
NT_ReturnStat(out s);
break;
case 9: // SEM
sp = new SrcPos();
break;
case 10:
NT_Block(out locSymbols,
out statList);
break;
case 11: // SEM
s = new BlockStat(sp, statList);
break;
case 12: // SEM
s = new EmptyStat(null);
break;
} // switch
} // for
} // NT_Stat
} // DumpSymTab
// === generate source text from symbol table and AST ===
public static void WriteStat(Stat stat)
{
switch (stat.kind)
{
case Stat.Kind.emptyStatKind:
genMcpp.WriteLine(Indent() + ";");
break;
case Stat.Kind.blockStatKind:
BlockStat b_s = (BlockStat)stat;
genMcpp.WriteLine(Indent() + "{");
IncIndent();
WriteStatList(b_s.statList);
DecIndent();
genMcpp.WriteLine(Indent() + "}");
break;
case Stat.Kind.incStatKind:
IncStat i_s = (IncStat)stat;
genMcpp.WriteLine(Indent() + i_s.vo.sy + "++;");
break;
case Stat.Kind.decStatKind:
DecStat d_s = (DecStat)stat;
genMcpp.WriteLine(Indent() + d_s.vo.sy + "--;");
break;
case Stat.Kind.assignStatKind:
AssignStat a_s = (AssignStat)stat;
genMcpp.WriteLine(Indent() + a_s.lhs + " = " + a_s.rhs + ";");
break;
case Stat.Kind.callStatKind:
CallStat c_s = (CallStat)stat;
genMcpp.WriteLine(Indent() + c_s.func + "(" + c_s.apl + ");");
break;
case Stat.Kind.ifStatKind:
IfStat if_s = (IfStat)stat;
genMcpp.WriteLine(Indent() + "if (" + if_s.cond + ")");
IncIndent();
WriteStatList(if_s.thenStat);
DecIndent();
if (if_s.elseStat != null)
{
genMcpp.WriteLine(Indent() + "else ");
IncIndent();
WriteStatList(if_s.elseStat);
DecIndent();
} // if
break;
case Stat.Kind.whileStatKind:
WhileStat w_s = (WhileStat)stat;
genMcpp.WriteLine(Indent() + "while (" + w_s.cond + ")");
IncIndent();
WriteStatList(w_s.body);
DecIndent();
break;
case Stat.Kind.breakStatKind:
genMcpp.WriteLine(Indent() + "break;");
break;
case Stat.Kind.inputStatKind:
InputStat in_s = (InputStat)stat;
genMcpp.WriteLine(Indent() + "cin >> " + in_s.vo.sy + ";");
break;
case Stat.Kind.outputStatKind:
OutputStat out_s = (OutputStat)stat;
genMcpp.Write(Indent() + "cout");
foreach (Object o in out_s.values)
{
genMcpp.Write(" << ");
if (o is Expr)
{
genMcpp.Write(o);
}
else if (o is String)
{
String s = o as String;
if (s == "\n")
{
genMcpp.Write("endl");
}
else
{
genMcpp.Write('"' + s + '"');
}
}
else
{
throw new Exception("invalid value");
}
} // foreach
genMcpp.WriteLine(";");
break;
case Stat.Kind.deleteStatKind:
DeleteStat del_s = (DeleteStat)stat;
genMcpp.WriteLine(Indent() + "delete[] " +
NameList.NameOf(del_s.vo.sy.spix) + ";");
break;
case Stat.Kind.returnStatKind:
ReturnStat r_s = (ReturnStat)stat;
genMcpp.Write(Indent() + "return");
if (r_s.e != null)
{
genMcpp.Write(" " + r_s.e);
}
genMcpp.WriteLine(";");
break;
default:
throw new Exception("invalid statement kind");
} // switch
} // WriteStatList