protected EvalSession(IVault vault, IVault repository)
{
AppDomain.CurrentDomain.Load("Esath.Data");
_expositions.Add(vault.AssertNotNull().ExposeReadOnly());
if (repository != null)
{
_expositions.Add(repository.AssertNotNull().ExposeReadOnly());
}
VM = new VirtualMachine();
VM.Context.Add("vault", vault);
VM.Context.Add("repository", repository);
VM.Context.Add("designTime", repository == null);
VM.Context.Add("evalCache", new Dictionary<VPath, Object>());
VM.Context.Add("evalSession", this);
VM.Context.Add("nodesInProgress", new HashSet<VPath>());
VM.Context.Add("nodeInProgress", null);
}
public void SetUp()
{
var codebase = Path.GetDirectoryName(GetType().Assembly.Location);
var possiblePlugins = Directory.GetFiles(codebase, "*.dll");
possiblePlugins.ForEach(file => { try
{
var asmBytes = File.ReadAllBytes(file);
AppDomain.CurrentDomain.Load(asmBytes);
} catch {/*ignore load failures*/} });
var elfCode = ResourceHelper.ReadFromResource("Elf.Playground.Staple.Universal.elf");
_vm = new VirtualMachine();
_toyLog = new StringBuilder();
_vm.Context["ToyLog"] = _toyLog;
_vm.Load(elfCode);
_ep = _vm.CreateEntryPoint("Script", "Main");
}
public UnexpectedRtimplRuntimeException(VirtualMachine vm, string message, Exception innerException)
: base(message, innerException)
{
VM = vm;
}
public UnexpectedElfRuntimeException(VirtualMachine vm, string message)
: base(message)
{
VM = vm;
}
public ErroneousScriptRuntimeException(ElfExceptionType type, VirtualMachine vm, Exception innerException)
: base(type, String.Empty, innerException)
{
VM = vm;
Thread = VM.CurrentThread;
}
private void ImplementCreateProperties(CompilationContext ctx, TypeBuilder t, IBranch root)
{
var relevantCumulations = ctx.ScheduledCumulations.ContainsKey(root) ?
ctx.ScheduledCumulations[root].Where(co => co.Subject.IsFov() || co.Subject.Parent.IsFov()) : null;
var special = ctx.CumulativeCompilation && relevantCumulations != null;
if (special && relevantCumulations.IsEmpty()) return;
var base_cp = t.BaseType.GetMethod("CreateProperties", BF.All);
var cp = t.DefineOverride(base_cp);
if (!base_cp.IsAbstract) cp.il().ldarg(0).call(base_cp);
ctx.CPs[t] = cp;
var svd = root.GetBranches().Where(b => b.Name == "_sourceValueDeclarations");
var formulae = root.GetBranches().Where(b => b.Name == "_formulaDeclarations");
var conditions = root.GetBranches().Where(b => b.Name == "_conditions");
var nodes = root.GetBranches().Except(svd).Except(formulae).Except(conditions);
var svdAndFormulae = svd.Concat(formulae).SelectMany(b => b.GetBranches()).ToArray();
if (special) svdAndFormulae = svdAndFormulae.Where(b =>
relevantCumulations.Any(co => co.Subject == b || co.Subject.Parent == b)).ToArray();
var propGetCache = new Dictionary<VPath, MethodInfo>();
var fieldCache = new Dictionary<VPath, FieldBuilder>();
var nameCache = new HashSet<String>();
Action<IBranch, bool> ensureProperty = (b, external) =>
{
if (propGetCache.ContainsKey(b.VPath))
{
return;
}
else
{
var typeToken = b.GetValue("type").ContentString;
var propType = typeToken.GetTypeFromToken();
var baseProp = t.BaseType.GetProperties(BF.All).SingleOrDefault(
p => p.HasAttr<VPathAttribute>() && p.Attr<VPathAttribute>().VPath == b.VPath);
var basePropOk = baseProp != null && baseProp.PropertyType == propType;
String name;
if (basePropOk)
{
name = baseProp.Name;
}
else
{
var desiredName = b.GetPropertyName();
name = desiredName;
var i = 0;
while (nameCache.Contains(name))
{
name = desiredName + "~" + ++i;
}
nameCache.Add(b.GetPropertyName());
}
if (external)
{
if (basePropOk)
{
propGetCache.Add(b.VPath, baseProp.GetGetMethod(true));
}
else
{
var p_prop = t.DefineProperty(name, PropA.None, propType, new Type[0]);
p_prop.SetCustomAttribute(new CustomAttributeBuilder(
typeof(VPathAttribute).GetConstructor(typeof(String).MkArray()),
b.VPath.ToString().MkArray()));
var get = t.DefineMethod("get_" + name, MA.ProtectedProp, propType, new Type[0]);
get.il()
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Root").GetGetMethod())
.ldstr(b.VPath.ToString())
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(ICompiledNode).GetMethod("Eval"))
.ret();
p_prop.SetGetMethod(get);
propGetCache.Add(b.VPath, get);
}
}
else
{
var p_prop = t.DefineProperty(name, PropA.None, propType, new Type[0]);
p_prop.SetCustomAttribute(new CustomAttributeBuilder(
typeof(VPathAttribute).GetConstructor(typeof(String).MkArray()),
b.VPath.ToString().MkArray()));
MethodBuilder get;
if (basePropOk)
{
var baseGet = baseProp.GetGetMethod(true);
get = t.DefineOverride(baseGet);
p_prop.SetGetMethod(get);
}
else
{
get = t.DefineMethod("get_" + name, MA.PublicProp, propType, new Type[0]);
p_prop.SetGetMethod(get);
}
propGetCache.Add(b.VPath, get);
fieldCache.Add(b.VPath, t.DefineField("_" + name.ToLower(), propType, FA.Private));
}
}
};
Action<IBranch> updateCp = b =>
{
var get = propGetCache[b.VPath];
cp.il()
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Properties").GetGetMethod())
.ldarg(0)
.ldstr(b.GetPropertyName())
.ldstr(b.VPath)
.newobj(typeof(VPath), typeof(String))
.ldarg(0)
.ldftn(get)
.newobj(typeof(Func<IEsathObject>), typeof(Object), typeof(IntPtr))
.newobj(typeof(CompiledProperty), typeof(CompiledNode), typeof(String), typeof(VPath), typeof(Func<IEsathObject>))
.callvirt(typeof(CompiledPropertyCollection).GetMethod("Add"));
};
// handle deleted flae and svds i.e. create CompiledNode.Eval-like crash
if (special)
{
foreach (IBranch deleted in relevantCumulations.Where(co => co.Reason == EventReason.Remove).Select(co => co.Subject))
{
ensureProperty(deleted, false);
var get = (MethodBuilder)propGetCache[deleted.VPath];
get.il()
.ldstr(String.Format("There's no compiled property at VPath '{0}'.", deleted.VPath))
.@throw(typeof(NotImplementedException), typeof(String));
updateCp(deleted);
}
}
// define all properties in advance so that we can reference them when needed
svdAndFormulae.ForEach(b => ensureProperty(b, false));
// implement defined properties
foreach (var b in svdAndFormulae)
{
var typeToken = b.GetValue("type").ContentString;
var propType = typeToken.GetTypeFromToken();
var f_prop = fieldCache[b.VPath];
var get = (MethodBuilder)propGetCache[b.VPath];
// if a formula has just been created (i.e. has null elfCode), then we just generate notimplemented stuff
// todo. this is a particular case of graceful dealing with invalid elf code
// a solid approach would also handle such stuff as: non-existing references, resolving to invalid methods
// and i think something else (needs thorough checking)
// note. when implementing that stuff, be sure to burn the failboat elf code + the failure reason right into the assembly code
// so that one can analyze the formula by him/herself and find the reason of the failure
if (b.IsFormula())
{
var host = b.GetValue("elfCode");
var code = host == null ? null : host.ContentString;
var elfCode = code == null ? null : code.ToCanonicalElf();
if (elfCode == null)
{
get.il().@throw(typeof(NotImplementedException));
updateCp(b);
continue;
}
}
Label cacheOk;
LocalBuilder loc_cache, loc_vpath, loc_result;
get.il()
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Root").GetGetMethod())
.ldfld(typeof(CompiledScenario).GetField("CachedPropertiesRegistry", BF.All))
.def_local(typeof(HashSet<VPath>), out loc_cache)
.stloc(loc_cache)
.ldstr(b.VPath.ToString())
.newobj(typeof(VPath), typeof(String))
.def_local(typeof(VPath), out loc_vpath)
.stloc(loc_vpath)
.ldloc(loc_cache)
.ldloc(loc_vpath)
.callvirt(typeof(HashSet<VPath>).GetMethod("Contains"))
.def_label(out cacheOk)
.brtrue(cacheOk)
// here svd and flae codegen will store the evaluation result
.def_local(propType, out loc_result);
if (b.IsSvd())
{
Label isRuntime, stlocRuntime, isDesignTime, stlocDesignTime, coalesce;
LocalBuilder runtime, designTime;
get.il()
// runtime -> value is stored in the repository
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Repository", BF.All).GetGetMethod(true))
.def_label(out stlocRuntime)
.def_label(out isRuntime)
.def_local(typeof(String), out runtime)
.brtrue_s(isRuntime)
.ldnull()
.br_s(stlocRuntime)
.label(isRuntime)
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Repository", BF.All).GetGetMethod(true))
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Scenario", BF.All).GetGetMethod(true))
.ldstr(b.VPath.ToString())
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(CachedVault).GetMethod("GetBranch"))
.ldstr("repositoryValue")
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(IBranch).GetMethod("GetValue"))
.callvirt(typeof(IValue).GetProperty("ContentString").GetGetMethod())
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(CachedVault).GetMethod("GetValue"))
.callvirt(typeof(IValue).GetProperty("ContentString").GetGetMethod())
.label(stlocRuntime)
.stloc(runtime)
// design time -> value is stored directly in the scenario next to the node
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Repository", BF.All).GetGetMethod(true))
.def_label(out stlocDesignTime)
.def_label(out isDesignTime)
.def_local(typeof(String), out designTime)
.brfalse_s(isDesignTime)
.ldnull()
.br_s(stlocDesignTime)
.label(isDesignTime)
.ldarg(0)
.callvirt(typeof(CompiledNode).GetProperty("Scenario", BF.All).GetGetMethod(true))
.ldstr(b.VPath.ToString())
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(CachedVault).GetMethod("GetBranch"))
.ldstr("valueForTesting")
.newobj(typeof(VPath), typeof(String))
.callvirt(typeof(IBranch).GetMethod("GetValue"))
.callvirt(typeof(IValue).GetProperty("ContentString").GetGetMethod())
.label(stlocDesignTime)
.stloc(designTime)
// prepare for convert
.ldtoken(propType)
.callvirt(typeof(Type).GetMethod("GetTypeFromHandle"))
.callvirt(typeof(Elf.Helpers.ReflectionHelper).GetMethod("ElfDeserializer"))
// coalesce designtime and runtime values
.ldloc(designTime)
.dup()
.def_label(out coalesce)
.brtrue_s(coalesce)
.pop()
.ldloc(runtime)
.label(coalesce)
// convert the string to esath object
.callvirt(typeof(Func<String, IElfObject>).GetMethod("Invoke"))
.stloc(loc_result);
}
else if (b.IsFormula())
{
var host = b.GetValue("elfCode");
var code = host == null ? null : host.ContentString;
var elfCode = code == null ? null : code.ToCanonicalElf();
elfCode.AssertNotNull(); // this is guaranteed by the check above (at the start of this method)
Label retTarget;
get.il().def_label(out retTarget);
var vm = new VirtualMachine();
vm.Load(elfCode);
var evis = ((NativeMethod)vm.Classes.Last().Methods.Single()).Body;
Func<String, VPath> idToVpath = elfid =>
{ try { return elfid.FromElfIdentifier(); } catch { return null; } };
Func<String, IEsathObject> elfStrToEsath = elfStr =>
{ try { return elfStr.FromStorageString(); } catch { return null; } };
var il = get.il();
var evalStack = new Stack<Type>();
Type auxResultType = null;
for (var j = 0; j < evis.Length; j++)
{
var evi = evis[j];
if (evi is Decl)
{
throw new NotSupportedException(
String.Format("The 'decl' instructions is not supported."));
}
else if (evi is Dup)
{
if (j < evis.Length - 1 && evis[j + 1] is PopRef)
{
// compile [dup, popref, pop] combo as simply [popref]
// since so far constructs like a = b = c are not used
}
else
{
var dupe = evalStack.Peek();
evalStack.Push(dupe);
il.dup();
}
}
else if (evi is Enter)
{
// do nothing
}
else if (evi is Invoke)
{
var invoke = (Invoke)evi;
var args = new Type[invoke.Argc];
for (var i = invoke.Argc - 1; i >= 0; --i)
args[i] = evalStack.Pop();
var resolved = DefaultInvocationResolver.Resolve(
vm,
invoke.Name,
vm.Classes.Last(),
args.Select(arg => vm.Classes.Single(c => c.Name == Elf.Helpers.ReflectionHelper.RtimplOf(arg))).ToArray());
if (resolved == null)
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported. " +
"Cannot resolve invocation '{1}({2}).",
invoke, invoke.Name, args.Select(arg => Elf.Helpers.ReflectionHelper.RtimplOf(arg)).StringJoin()));
}
else
{
if (!(resolved is ClrMethod))
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported. " +
"Invocation '{1}({2}) has been resolved to a native method '{3}'.",
invoke, invoke.Name, args.Select(arg => Elf.Helpers.ReflectionHelper.RtimplOf(arg)).StringJoin(), resolved));
}
else
{
var clrMethod = (MethodInfo)((ClrMethod)resolved).Rtimpl;
if (clrMethod.ReturnType == typeof(void))
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported. " +
"Invocation '{1}({2}) has been resolved to a void-returning method '{3}'.",
invoke, invoke.Name, args.Select(arg => Elf.Helpers.ReflectionHelper.RtimplOf(arg)).StringJoin(), clrMethod));
}
else
{
il.callvirt(clrMethod);
evalStack.Push(clrMethod.ReturnType);
}
}
}
}
else if (evi is Jf)
{
throw new NotSupportedException(
String.Format("The 'jf' instruction is not supported."));
}
else if (evi is Jt)
{
throw new NotSupportedException(
String.Format("The 'jt' instruction is not supported."));
}
else if (evi is Elf.Core.Assembler.Label)
{
throw new NotSupportedException(
String.Format("The 'label' instruction is not supported."));
}
else if (evi is Leave)
{
// do nothing
}
else if (evi is Pop)
{
if (j > 0 && evis[j - 1] is PopRef)
{
// compile [dup, popref, pop] combo as simply [popref]
// since so far constructs like a = b = c are not used
}
else
{
il.pop();
evalStack.Pop();
}
}
else if (evi is PopAll)
{
evalStack.ForEach(t1 => { evalStack.Pop(); il.pop(); });
}
else if (evi is PopRef)
{
var popref = (PopRef)evi;
var vpath = idToVpath(popref.Ref);
if (vpath == null)
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported.", popref));
}
else
{
if (vpath != b.VPath)
{
throw new NotSupportedException(String.Format(
"The 'popref <vpath>' instruction is supported only " +
"when vpath represents the current node. Current instruction " +
"'{0}' is not supported", popref));
}
else
{
auxResultType = evalStack.Pop();
// todo. ensure that nothing significant follows this instruction
}
}
}
else if (evi is PushRef)
{
var pushref = (PushRef)evi;
var vpath = idToVpath(pushref.Ref);
if (vpath == null)
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported.", pushref));
}
else
{
if (!propGetCache.ContainsKey(vpath))
{
var branch = Vault.GetBranch(vpath);
if (branch == null)
{
throw new NotSupportedException(String.Format(
"The 'pushref <vpath>' instruction is supported only " +
"when vpath represents the svd or flae node. Current vpath '{0}' " +
"doesn't reference any node in the scenario being compiled.", vpath));
}
if (!branch.IsFov())
{
throw new NotSupportedException(String.Format(
"The 'pushref <vpath>' instruction is supported only " +
"when vpath represents an svd or a flae node. Current branch " +
"'{0}' at vpath '{1}' is not supported.", branch.Name, branch.VPath));
}
ensureProperty(branch, true);
}
var prop = propGetCache[vpath];
il.ldarg(0).callvirt(prop);
evalStack.Push(prop.ReturnType);
}
}
else if (evi is PushVal)
{
var pushval = (PushVal)evi;
if (!(pushval.Val is ElfStringLiteral) ||
(elfStrToEsath(((ElfStringLiteral)pushval.Val).Val)) == null)
{
throw new NotSupportedException(String.Format(
"The 'pushval <val>' instruction is supported only " +
"when val represents correctly encoded esath object. Current instruction " +
"'{0}' is not supported", pushval));
}
else
{
var storageString = ((ElfStringLiteral)pushval.Val).Val;
var match = Regex.Match(storageString, @"^\[\[(?<token>.*?)\]\](?<content>.*)$");
match.Success.AssertTrue();
if (match.Success)
{
var token = match.Result("${token}");
var content = match.Result("${content}");
il.ldtoken(token.GetTypeFromToken())
.callvirt(typeof(Type).GetMethod("GetTypeFromHandle"))
.callvirt(typeof(Elf.Helpers.ReflectionHelper).GetMethod("ElfDeserializer"))
.ldstr(content)
.callvirt(typeof(Func<String, IElfObject>).GetMethod("Invoke"));
evalStack.Push(token.GetTypeFromToken());
}
}
}
else if (evi is Ret)
{
evalStack.IsEmpty().AssertTrue();
il.br_s(retTarget);
}
else
{
throw new NotSupportedException(String.Format(
"The '{0}' instruction is not supported.", evi));
}
}
if (auxResultType == propType)
{
il.label(retTarget)
.stloc(loc_result);
}
else
{
LocalBuilder auxResult;
var valPropGet = auxResultType.GetProperty("Val").GetGetMethod();
il.label(retTarget)
.def_local(auxResultType, out auxResult)
.stloc(auxResult)
.ldloc(auxResult)
.callvirt(valPropGet);
if (typeof(ElfNumber).IsAssignableFrom(auxResultType) &&
propType == typeof(EsathPercent))
{
// ldc_r8 is a must, since ldc_i4 performs integer multiplication
// and fails stuff like 1.2 * 100 (the result will be 100)
il.ldc_r8(100)
.mul();
}
il.convert(valPropGet.ReturnType, propType)
.stloc(loc_result);
}
}
else
{
throw new NotSupportedException(
String.Format("Properties of type '{0}' are not supported", b));
}
get.il()
// the value is stored in a local after svd or flae codegen
.ldarg(0)
.ldloc(loc_result)
.stfld(f_prop)
.ldloc(loc_cache)
.ldloc(loc_vpath)
.callvirt(typeof(HashSet<VPath>).GetMethod("Add"))
.pop()
// if the value is cached, just execute this
.label(cacheOk)
.ldarg(0)
.ldfld(f_prop)
.ret();
// finally register the property just compiled in the CreateProperties
updateCp(b);
}
cp.il().ret();
}
public ElfInteractive()
{
VM = new VirtualMachine();
VM.Context.Add("iactx", new PropertyBag());
}
public CocaContext(ColaNode cap)
: base(cap)
{
VM = new VirtualMachine();
}
public void SetUp()
{
_vm = new VirtualMachine();
_toyLog = new StringBuilder();
_vm.Context["ToyLog"] = _toyLog;
}
private void FillFxtypesList()
{
_fxTypeButton.DropDownItems.Clear();
var vm = new VirtualMachine();
var fx = vm.Classes.SelectMany(c => c.Methods.OfType<ClrMethod>()).Concat(vm.HelperMethods);
var fxn = fx.Select(m => m.Rtimpl.RtimplOf()).Distinct().OrderBy(n => n);
new []{"="}.Concat(fxn).ForEach(fxnn =>
{
if (fxnn == "||" || fxnn == "&&" || fxnn == "!=" || fxnn == "==") return;
var ddi = _fxTypeButton.DropDownItems.Add("pew");
ddi.Text = fxnn;
ddi.Click += (o, e) => {
var curr = _selectedSub.Children.Count();
var vargs = fxnn.GuessArgc() ?? curr;
if (vargs < curr && !this.Confirm()) return;
var head = _selectedSub.Children.Take(Math.Min(curr, vargs));
var tail = Enumerable.Range(0, Math.Max(0, vargs - curr))
.Select(i => new VariableExpression("?")).Cast<AstNode>();
var chi = head.Concat(tail).Cast<Expression>();
if (fxnn == "=")
{
var target = (VariableExpression)chi.ElementAt(0);
var expr = chi.ElementAt(1);
ReplaceSubThenSelectItAndRedraw(_selectedSub, new AssignmentExpression(target, expr));
}
else
{
ReplaceSubThenSelectItAndRedraw(_selectedSub, new InvocationExpression(fxnn, chi));
}
OnSelectFxPanel(); };
if (fxnn == "=") _fxEq = ddi;
});
}