static void Main(string[] args)
{
Neo.VM.ScriptBuilder builder = new Neo.VM.ScriptBuilder();
builder.Emit(Neo.VM.OpCode.NOP);
builder.EmitPush(1);
builder.EmitPush(2);
builder.Emit(Neo.VM.OpCode.ADD);
builder.Emit(Neo.VM.OpCode.RET);
var machinecode = builder.ToArray();
var hexstr = "0x";
foreach (var m in machinecode)
{
hexstr += m.ToString("X02");
}
Console.WriteLine("machinecode=" + hexstr);
//run machinecode with neovm
var engine = new Neo.VM.ExecutionEngine();
engine.LoadScript(machinecode);
engine.Execute();
//show result
var calcstack = engine.ResultStack;
var v = calcstack.Peek();
Console.WriteLine("retvalue=" + v.GetBigInteger());
Console.ReadLine();
}
static void EmitCode(Neo.VM.ScriptBuilder builder, ISyntaxNode ast)
{
if (ast is SyntaxNode_Num)
{
builder.EmitPush((ast as SyntaxNode_Num).num);
}
else if (ast is SyntaxNode_Add)
{
foreach (var sn in ast.subnodes)
{
EmitCode(builder, sn);
}
builder.Emit(Neo.VM.OpCode.ADD);
}
}
static void Main(string[] args)
{
var srccode = " 1 + 2 + 4 + 5";
var ast = ParseSyntaxNode(srccode);
DumpAST(ast);
Neo.VM.ScriptBuilder builder = new Neo.VM.ScriptBuilder();
EmitCode(builder, ast);
builder.Emit(Neo.VM.OpCode.RET);
var machinecode = builder.ToArray();
var hexstr = "0x";
foreach (var m in machinecode)
{
hexstr += m.ToString("X02");
}
Console.WriteLine("machinecode=" + hexstr);
//run machinecode with neovm
var engine = new Neo.VM.ExecutionEngine();
engine.LoadScript(machinecode);
engine.Execute();
//show result
var calcstack = engine.ResultStack;
var v = calcstack.Peek();
Console.WriteLine("retvalue=" + v.GetBigInteger());
Console.ReadLine();
}