/// <summary> /// executes a single instruction in the current script, and returns the last script offset /// </summary> public DebuggerState Step() { if (lastState.state == DebuggerState.State.Finished || lastState.state == DebuggerState.State.Invalid) { return(lastState); } ExecuteSingleStep(); try { lastOffset = engine.CurrentContext.InstructionPointer; var opcode = engine.lastOpcode; decimal opCost; if (opcode <= OpCode.PUSH16) { opCost = 0; } else { switch (opcode) { case OpCode.SYSCALL: { var callInfo = interop.FindCall(engine.lastSysCall); opCost = (callInfo != null) ? callInfo.gasCost : 0; if (engine.lastSysCall.EndsWith("Storage.Put")) { opCost *= (Storage.lastStorageLength / 1024.0m); if (opCost < 1) { opCost = 1; } } break; } case OpCode.CHECKMULTISIG: case OpCode.CHECKSIG: opCost = 0.1m; break; case OpCode.APPCALL: case OpCode.TAILCALL: case OpCode.SHA256: case OpCode.SHA1: opCost = 0.01m; break; case OpCode.HASH256: case OpCode.HASH160: opCost = 0.02m; break; case OpCode.NOP: opCost = 0; break; default: opCost = 0.001m; break; } } usedGas += opCost; usedOpcodeCount++; OnStep?.Invoke(new EmulatorStepInfo() { byteCode = engine.CurrentContext.Script, offset = engine.CurrentContext.InstructionPointer, opcode = opcode, gasCost = opCost, sysCall = opcode == OpCode.SYSCALL? engine.lastSysCall : null }); } catch { // failed to get instruction pointer } if (engine.State.HasFlag(VMState.FAULT)) { lastState = new DebuggerState(DebuggerState.State.Exception, lastOffset); return(lastState); } if (engine.State.HasFlag(VMState.BREAK)) { lastState = new DebuggerState(DebuggerState.State.Break, lastOffset); engine.State = VMState.NONE; return(lastState); } if (engine.State.HasFlag(VMState.HALT)) { lastState = new DebuggerState(DebuggerState.State.Finished, lastOffset); return(lastState); } lastState = new DebuggerState(DebuggerState.State.Running, lastOffset); return(lastState); }
/// <summary> /// executes a single instruction in the current script, and returns the last script offset /// </summary> public DebuggerState Step() { if (lastState.state == DebuggerState.State.Finished || lastState.state == DebuggerState.State.Invalid) { return(lastState); } engine.ExecuteSingleStep(); try { lastOffset = engine.CurrentContext.InstructionPointer; var opcode = engine.lastOpcode; double opCost; if (opcode <= OpCode.PUSH16) { opCost = 0; } else { switch (opcode) { case OpCode.SYSCALL: { var callInfo = interop.FindCall(engine.lastSysCall); opCost = (callInfo != null) ? callInfo.gasCost : 0; if (engine.lastSysCall.EndsWith("Storage.Put")) { opCost *= (Storage.lastStorageLength / 1024.0); } break; } case OpCode.CHECKMULTISIG: case OpCode.CHECKSIG: opCost = 0.1; break; case OpCode.APPCALL: case OpCode.TAILCALL: case OpCode.SHA256: case OpCode.SHA1: opCost = 0.01; break; case OpCode.HASH256: case OpCode.HASH160: opCost = 0.02; break; case OpCode.NOP: opCost = 0; break; default: opCost = 0.001; break; } } _usedGas += opCost; } catch { // failed to get instruction pointer } if (engine.State.HasFlag(VMState.FAULT)) { lastState = new DebuggerState(DebuggerState.State.Exception, lastOffset); return(lastState); } if (engine.State.HasFlag(VMState.BREAK)) { lastState = new DebuggerState(DebuggerState.State.Break, lastOffset); return(lastState); } if (engine.State.HasFlag(VMState.HALT)) { lastState = new DebuggerState(DebuggerState.State.Finished, lastOffset); return(lastState); } lastState = new DebuggerState(DebuggerState.State.Running, lastOffset); return(lastState); }