public override Dictionary <string, object> Evaluate(EvaluationPackage evalpackage)
{
var engine = IronPython.Hosting.Python.CreateEngine();
scope = engine.CreateScope();
//http://techartsurvival.blogspot.com/2013/12/techartists-doin-it-for-themselves.html#gpluscomments
engine.Runtime.LoadAssembly(typeof(PythonIOModule).Assembly);
engine.Runtime.LoadAssembly(typeof(GameObject).Assembly);
engine.Runtime.LoadAssembly(typeof(Editor).Assembly);
string dllpath = System.IO.Path.GetDirectoryName(
(typeof(ScriptEngine)).Assembly.Location).Replace(
"\\", "/");
// load needed modules and paths
StringBuilder init = new StringBuilder();
init.AppendLine("import sys");
init.AppendFormat("sys.path.append(\"{0}\")\n", dllpath + "/Lib");
init.AppendFormat("sys.path.append(\"{0}\")\n", dllpath + "/DLLs");
init.AppendLine("import UnityEngine as unity");
init.AppendLine("import UnityEditor as editor");
init.AppendLine("import StringIO");
init.AppendLine("unity.Debug.Log(\"Python console initialized\")");
var OutputNames = evalpackage.OutputNames;
var variableNames = evalpackage.VariableNames;
var variableValues = evalpackage.VariableValues;
var ExecutionPointers = evalpackage.ExecutionPointers;
var script = evalpackage.Code;
foreach (var variable in variableNames)
{
var index = variableNames.IndexOf(variable);
// do we need to do some conversion of this type...TODO
scope.SetVariable(variable, variableValues[index]);
Debug.Log("setting" + variable + "to" + variableValues[index].ToString());
}
foreach (var pointer in ExecutionPointers)
{
scope.SetVariable(pointer.First, pointer.Second);
Debug.Log("setting " + pointer.First + " to " + pointer.Second.ToString() + " in python context");
//TODO if this list is empty or if the script never exposes these triggers then we need
//complain at compile time, throw an exception, or just inject one at the end of the
//script or after this eval returns
}
using (var memoryStream = new MemoryStream())
{
engine.Runtime.IO.SetOutput(memoryStream, new StreamWriter(memoryStream));
try
{
engine.CreateScriptSourceFromString(init.ToString() + script).Execute(scope);
}
catch (Exception e)
{
string error = engine.GetService <ExceptionOperations>().FormatException(e);
Debug.LogException(e);
}
finally
{
var length = (int)memoryStream.Length;
var bytes = new byte[length];
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.Read(bytes, 0, length);
StdOut = Encoding.UTF8.GetString(bytes, 0, length).Trim();
Debug.Log("<color=yellow>Python Std:</color>" + StdOut);
}
//TODO we need a way to push values from the python context to the nodeModel
//during execution, not sure if this is possible, for example, to gather
//some intermediate outputs during a for loop execution, possible implementation
//can just inject some logic into the callOutput method, that gathers all output
//variables, if they are not set or cannot be found, just continue execution
// but don't fail, they just might not be set yet
var outdict = PollScopeForOutputs(OutputNames);
return(outdict);
}
}
//
public override Dictionary <string, object> Evaluate(EvaluationPackage evalpackage)
{
var outputNames = evalpackage.OutputNames;
var variableNames = evalpackage.VariableNames;
var variableValues = evalpackage.VariableValues;
var executionPointers = evalpackage.ExecutionPointers;
Code = evalpackage.CodePointer;
//Debug.Log("CODE is of type" + Code.GetType().ToString());
using (var memoryStream = new MemoryStream())
{
//TODO I think this needs to only happen once, or on a null check,
//this dictionary will get overwritten anytime this function is called currently...
//build the intermediatedict and assign keys from the output names
var outdict = new Dictionary <string, object>();
foreach (var outname in outputNames)
{
if (outdict.ContainsKey(outname))
{
outdict[outname] = "overwrote the previous entry";
}
else
{
//Debug.Log("added a space in the outdict in the csharp evaluator with name " + outname);
outdict[outname] = null;
}
}
//we expose all input variables and trigger delegates in the inputdict which we will pass to compiled eval
var inputdict = new Dictionary <string, object>();
foreach (var variable in variableNames)
{
var index = variableNames.IndexOf(variable);
inputdict[variable] = variableValues[index];
//Debug.Log("setting" + variable + "to" + variableValues[index].ToString());
}
foreach (var pointer in executionPointers)
{
inputdict[pointer.First] = pointer.Second;
//Debug.Log("setting " + pointer.First + " to " + pointer.Second.ToString() + " in csharp context");
}
//redirect the output for this delegate
//Console.SetOut (new StreamWriter(memoryStream));
try
{
outdict = CompiledEvaluation(inputdict, ref outdict);
}
catch (Exception e)
{
string error = e.Message + e.StackTrace;
Debug.LogException(e);
}
finally
{
var length = (int)memoryStream.Length;
var bytes = new byte[length];
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.Read(bytes, 0, length);
StdOut = Encoding.UTF8.GetString(bytes, 0, length).Trim();
}
//Console.OpenStandardOutput();
return(outdict);
}
}
