/// <summary>
/// Emits the opcodes for calling a contract dynamically.
/// </summary>
/// <param name="builder">The <see cref="ScriptBuilder"/> to be used.</param>
/// <param name="scriptHash">The hash of the contract to be called.</param>
/// <param name="method">The method to be called in the contract.</param>
/// <param name="flags">The <see cref="CallFlags"/> for calling the contract.</param>
/// <param name="args">The arguments for calling the contract.</param>
/// <returns>The same instance as <paramref name="builder"/>.</returns>
public static ScriptBuilder EmitDynamicCall(this ScriptBuilder builder, UInt160 scriptHash, string method, CallFlags flags, params object[] args)
{
builder.CreateArray(args);
builder.EmitPush(flags);
builder.EmitPush(method);
builder.EmitPush(scriptHash);
builder.EmitSysCall(ApplicationEngine.System_Contract_Call);
return(builder);
}
public void TestEmitArray()
{
var expected = new BigInteger[] { 1, 2, 3 };
var sb = new ScriptBuilder();
sb.CreateArray(expected);
using var engine = ApplicationEngine.Create(TriggerType.Application, null, null);
engine.LoadScript(sb.ToArray());
Assert.AreEqual(VMState.HALT, engine.Execute());
CollectionAssert.AreEqual(expected, engine.ResultStack.Pop <VM.Types.Array>().Select(u => u.GetInteger()).ToArray());
expected = new BigInteger[] { };
sb = new ScriptBuilder();
sb.CreateArray(expected);
using var engine2 = ApplicationEngine.Create(TriggerType.Application, null, null);
engine2.LoadScript(sb.ToArray());
Assert.AreEqual(VMState.HALT, engine2.Execute());
Assert.AreEqual(0, engine2.ResultStack.Pop <VM.Types.Array>().Count);
}
