/// <summary>
/// Adds the given number to the given index in the program. Automatically
/// uses shortest encoding possible.
/// </summary>
public ScriptBuilder Number(int index, long num)
{
if (num >= 0 && num < 16)
{
return(this.AddChunk(index, new ScriptChunk(Script.EncodeToOpN((int)num), null)));
}
return(this.BigNum(index, num));
}
/// <summary>
/// Adds a copy of the given byte array as a data element (i.e. PUSHDATA) at the given index in the program.
/// </summary>
public ScriptBuilder Data(int index, byte[] data)
{
// implements BIP62
byte[] copy = data.Clone() as byte[];
int opcode;
if (data.Length == 0)
{
opcode = ScriptOpCodes.OP_0;
}
else if (data.Length == 1)
{
byte b = data[0];
if (b >= 1 && b <= 16)
{
opcode = Script.EncodeToOpN(b);
}
else
{
opcode = 1;
}
}
else if (data.Length < ScriptOpCodes.OP_PUSHDATA1)
{
opcode = data.Length;
}
else if (data.Length < 256)
{
opcode = ScriptOpCodes.OP_PUSHDATA1;
}
else if (data.Length < 65536)
{
opcode = ScriptOpCodes.OP_PUSHDATA2;
}
else
{
throw new ScriptException("Unimplemented");
}
return(this.AddChunk(index, new ScriptChunk(opcode, copy)));
}
/// <summary>
/// Adds the given number as a OP_N opcode to the given index in the program.
/// Only handles values 0-16 inclusive.
/// </summary>
public ScriptBuilder SmallNum(int index, int num)
{
Guard.Require(num >= 0, "Cannot encode negative numbers with SmallNum");
Guard.Require(num <= 16, "Cannot encode numbers larger than 16 with SmallNum");
return(this.AddChunk(index, new ScriptChunk(Script.EncodeToOpN(num), null)));
}
