public override void EmitSet(CodeGen cg)
{
if (instance.Type.IsAssignableFrom(type))
{
cg.Emit(OpCodes.Castclass, instance.Type);
}
instance.EmitSet(cg);
}
public override void EmitSet(CodeGen cg)
{
Slot val = cg.GetLocalTmp(Type);
val.EmitSet(cg);
EmitSet(cg, val);
cg.FreeLocalTmp(val);
}
/// <summary>
/// Generates a static entry point for stand-alone EXEs. We just new up our module dstructure
/// and then call into Ops to get running.
/// </summary>
internal static CodeGen GenerateModuleEntryPoint(TypeGen tg, CodeGen init, string moduleName, IList <string> referencedAssemblies)
{
CodeGen main = tg.DefineMethod(MethodAttributes.Static | MethodAttributes.Public, "Main", typeof(int), Type.EmptyTypes, new string[] { });
main.SetCustomAttribute(new CustomAttributeBuilder(typeof(STAThreadAttribute).GetConstructor(Type.EmptyTypes), new object[0]));
// Create instance of the module
Slot instance = main.GetLocalTmp(tg.myType);
main.EmitNew(tg.DefaultConstructor);
instance.EmitSet(main);
// Emit instance for the ExecuteCompiled call
instance.EmitGet(main);
// Emit the delegate to the init method
main.EmitDelegate(init, typeof(InitializeModule), instance);
main.EmitString(moduleName);
// emit the references assemblies
if (referencedAssemblies != null)
{
for (int i = 0; i < referencedAssemblies.Count; i++)
{
if (referencedAssemblies[i].ToLower().EndsWith("\\ironpython.dll"))
{
referencedAssemblies.RemoveAt(i);
i--;
}
else
{
if (referencedAssemblies[i].IndexOf(Path.DirectorySeparatorChar) != -1)
{
referencedAssemblies[i] = referencedAssemblies[i].Substring(referencedAssemblies[i].LastIndexOf(Path.DirectorySeparatorChar) + 1);
}
if (referencedAssemblies[i].ToLower().EndsWith(".dll"))
{
referencedAssemblies[i] = referencedAssemblies[i].Substring(0, referencedAssemblies[i].Length - 4);
}
}
}
main.EmitStringArray(referencedAssemblies);
}
else
{
main.Emit(OpCodes.Ldnull);
}
// Call ExecuteCompiled
main.EmitCall(typeof(IronPython.Hosting.PythonEngine),
"ExecuteCompiled",
new Type[] { typeof(CustomFieldIdDict), typeof(InitializeModule), typeof(string), typeof(string[]) });
main.EmitReturn();
return(main);
}
public override void EmitSet(CodeGen cg, Slot val)
{
val.EmitGet(cg);
cg.EmitCastToObject(Type);
val = cg.GetLocalTmp(typeof(object));
val.EmitSet(cg);
instance.EmitGet(cg);
cg.EmitInt(index);
val.EmitGet(cg);
cg.Emit(OpCodes.Stelem_Ref);
}
private void EmitGeneratorBody(CodeGen cg, CodeGen ocg)
{
// Create the GenerateNext function
CodeGen ncg = cg.DefineMethod(name.GetString() + "$g" + counter++, typeof(bool),
new Type[] { typeof(Generator), typeof(object).MakeByRefType() },
new String[] { "$gen", "$ret" });
PromoteLocalsToEnvironment();
// Namespace without er factory - all locals must exist ahead of time
ncg.Names = new Namespace(null);
Slot generator = ncg.GetArgumentSlot(0);
ncg.StaticLinkSlot = new FieldSlot(generator, typeof(Generator).GetField("staticLink"));
if (HasEnvironment)
{
cg.EnvironmentSlot = CreateEnvironment(cg);
EnvironmentFactory ef = this.environmentFactory;
Slot envSlotCast = new CastSlot(
new FieldSlot(generator, typeof(Generator).GetField("environment")),
ef.EnvironmentType
);
Slot envSlot = ncg.GetLocalTmp(ef.EnvironmentType);
// setup the environment and static link slots
ncg.EnvironmentSlot = envSlot;
ncg.ContextSlot = envSlot;
// pull the environment into typed local variable
envSlot.EmitSet(ncg, envSlotCast);
InheritEnvironment(ncg);
CreateGeneratorTemps(ef, ncg);
}
else
{
ncg.ContextSlot = ncg.StaticLinkSlot;
}
ncg.ModuleSlot = new PropertySlot(ncg.ContextSlot, typeof(ICallerContext).GetProperty("Module"));
CreateClosureSlots(ncg);
CreateGlobalSlots(ncg, ocg);
// Emit the generator body using the typed er
EmitGenerator(ncg);
// Initialize the generator
EmitTupleParams(cg);
// Create instance of the generator
cg.EmitStaticLinkOrNull();
cg.EmitEnvironmentOrNull();
cg.EmitDelegate(ncg, typeof(Generator.NextTarget), null);
cg.EmitNew(typeof(Generator), new Type[] { typeof(FunctionEnvironmentDictionary), typeof(FunctionEnvironmentDictionary), typeof(Generator.NextTarget) });
cg.EmitReturn();
}
// This override assumes that the IL stack already holds the value to be assigned from.
public virtual void EmitSet(CodeGen cg)
{
// localTmpVal = <top of IL stack>
Slot localTmpVal = cg.GetLocalTmp(typeof(object));
localTmpVal.EmitSet(cg);
// <slot> = localTmpVal
EmitSet(cg, localTmpVal);
cg.FreeLocalTmp(localTmpVal);
}
public override void EmitSet(CodeGen cg)
{
Slot val = cg.GetLocalTmp(Type);
val.EmitSet(cg);
base.EmitGet(cg);
val.EmitGet(cg);
cg.EmitCall(typeof(BuiltinWrapper), "set_CurrentValue");
cg.FreeLocalTmp(val);
}
//!!! code review
protected void FinishCompare(CodeGen cg)
{
BinaryExpr bright = (BinaryExpr)right;
Slot valTmp = cg.GetLocalTmp(typeof(object));
Slot retTmp = cg.GetLocalTmp(typeof(object));
bright.left.Emit(cg);
cg.Emit(OpCodes.Dup);
valTmp.EmitSet(cg);
cg.EmitCall(op.target.Method);
cg.Emit(OpCodes.Dup);
retTmp.EmitSet(cg);
cg.EmitTestTrue();
Label end = cg.DefineLabel();
cg.Emit(OpCodes.Brfalse, end);
valTmp.EmitGet(cg);
if (IsComparision(bright.right))
{
bright.FinishCompare(cg);
}
else
{
bright.right.Emit(cg);
cg.EmitCall(bright.op.target.Method);
}
retTmp.EmitSet(cg);
cg.MarkLabel(end);
retTmp.EmitGet(cg);
}
public override void Emit(CodeGen cg)
{
cg.EmitPosition(start, end);
cg.EmitModuleInstance();
cg.EmitString(root.MakeString());
if (names == Star)
{
cg.EmitCall(typeof(Ops), "ImportStar"); //!!! this is tricky
}
else
{
Slot fromObj = cg.GetLocalTmp(typeof(object));
cg.EmitStringArray(Name.ToStrings(names));
if (asNames != null)
{
cg.EmitStringArray(Name.ToStrings(asNames));
cg.EmitCall(typeof(Ops), "ImportFromAs");
}
else
{
cg.EmitCall(typeof(Ops), "ImportFrom");
}
fromObj.EmitSet(cg);
for (int i = 0; i < names.Length; i++)
{
cg.EmitCallerContext();
fromObj.EmitGet(cg);
cg.EmitString(names[i].GetString());
cg.EmitCall(typeof(Ops), "ImportOneFrom");
Name asName;
if (i < asNames.Length && asNames[i] != null)
{
asName = asNames[i];
}
else
{
asName = names[i];
}
cg.EmitSet(asName);
}
}
}
private void MakeRawKeysMethod()
{
Slot rawKeysCache = tg.AddStaticField(typeof(SymbolId[]), "ExtraKeysCache");
CodeGen init = tg.GetOrMakeInitializer();
SymbolId[] nameArray = new SymbolId[names.Slots.Count];
init.EmitSymbolIdArray(new List <Name>(names.Slots.Keys));
rawKeysCache.EmitSet(init);
CodeGen cg = tg.DefineMethodOverride(typeof(CustomFieldIdDict).GetMethod("GetExtraKeys"));
rawKeysCache.EmitGet(cg);
cg.EmitReturn();
cg.Finish();
}
public void EmitIndirectedSymbol(CodeGen cg, SymbolId id)
{
Slot value;
if (!indirectSymbolIds.TryGetValue(id, out value))
{
// create field, emit fix-up...
value = AddStaticField(typeof(int), "symbol_" + SymbolTable.IdToString(id));
CodeGen init = GetOrMakeInitializer();
Slot localTmp = init.GetLocalTmp(typeof(SymbolId));
init.EmitString((string)SymbolTable.IdToString(id));
init.EmitCall(typeof(SymbolTable), "StringToId");
localTmp.EmitSet(init);
localTmp.EmitGetAddr(init);
init.EmitFieldGet(typeof(SymbolId), "Id");
value.EmitSet(init);
cg.FreeLocalTmp(localTmp);
indirectSymbolIds[id] = value;
}
value.EmitGet(cg);
}
public override void EmitSet(CodeGen cg)
{
// Disallow "[] = l", "[], a = l, l", "[[]] = [l]", etc
if (items.Length == 0)
{
cg.Context.AddError("can't assign to " + EmptySequenceString, this);
return;
}
// int leftCount = items.Length;
Slot leftCount = cg.GetLocalTmp(typeof(int));
cg.EmitInt(items.Length);
leftCount.EmitSet(cg);
// object[] values = new object[leftCount];
Slot values = cg.GetLocalTmp(typeof(object[]));
leftCount.EmitGet(cg);
cg.Emit(OpCodes.Newarr, typeof(object));
values.EmitSet(cg);
// ie = Ops.GetEnumerator(<value on stack>)
Slot ie = cg.GetLocalTmp(typeof(IEnumerator));
cg.EmitCall(typeof(Ops), "GetEnumerator");
ie.EmitSet(cg);
// int rightCount = Ops.GetEnumeratorValues(ie, ref values);
Slot rightCount = cg.GetLocalTmp(typeof(int));
ie.EmitGet(cg);
values.EmitGetAddr(cg);
cg.EmitCall(typeof(Ops), "GetEnumeratorValues");
rightCount.EmitSet(cg);
// if (leftCount != rightCount)
// throw Ops.ValueErrorForUnpackMismatch(leftCount, rightCount);
Label equalSizes = cg.DefineLabel();
leftCount.EmitGet(cg);
rightCount.EmitGet(cg);
cg.Emit(OpCodes.Ceq);
cg.Emit(OpCodes.Brtrue_S, equalSizes);
leftCount.EmitGet(cg);
rightCount.EmitGet(cg);
cg.EmitCall(typeof(Ops).GetMethod("ValueErrorForUnpackMismatch"));
cg.Emit(OpCodes.Throw);
cg.MarkLabel(equalSizes);
// for (int i = 0; i < leftCount; i++)
// items[i].Assign(values[i], env);
int i = 0;
foreach (Expr expr in items)
{
values.EmitGet(cg);
cg.EmitInt(i++);
cg.Emit(OpCodes.Ldelem_Ref);
expr.EmitSet(cg);
}
cg.FreeLocalTmp(leftCount);
cg.FreeLocalTmp(rightCount);
cg.FreeLocalTmp(values);
cg.FreeLocalTmp(ie);
}
public override void Emit(CodeGen cg)
{
Slot list = cg.GetLocalTmp(typeof(List));
cg.EmitCall(typeof(Ops), "MakeList", Type.EmptyTypes);
list.EmitSet(cg);
// first loop: how many For; initialize labels/slots
int iFors = 0;
foreach (ListCompIter iter in iters)
{
if (iter is ListCompFor)
{
iFors++;
}
}
Label[] continueTargets = new Label[iFors];
Slot[] enumerators = new Slot[iFors];
int jIters = iters.Length;
Label[] exitTargets = new Label[jIters];
for (int i = 0; i < iFors; i++)
{
continueTargets[i] = cg.DefineLabel();
enumerators[i] = cg.GetLocalTmp(typeof(IEnumerator));
}
for (int i = 0; i < jIters; i++)
{
exitTargets[i] = cg.DefineLabel();
}
// second loop: before emiting item
iFors = jIters = 0;
foreach (ListCompIter iter in iters)
{
if (iter is ListCompFor)
{
ListCompFor cfor = iter as ListCompFor;
cfor.list.Emit(cg);
cg.EmitCall(typeof(Ops), "GetEnumerator");
enumerators[iFors].EmitSet(cg);
cg.MarkLabel(continueTargets[iFors]);
enumerators[iFors].EmitGet(cg);
cg.EmitCall(typeof(IEnumerator), "MoveNext", Type.EmptyTypes);
cg.Emit(OpCodes.Brfalse, exitTargets[jIters]);
enumerators[iFors].EmitGet(cg);
cg.EmitCall(typeof(IEnumerator).GetProperty("Current").GetGetMethod());
cfor.lhs.EmitSet(cg);
iFors++;
}
else if (iter is ListCompIf)
{
ListCompIf cif = iter as ListCompIf;
cg.EmitTestTrue(cif.test);
cg.Emit(OpCodes.Brfalse, exitTargets[jIters]);
}
jIters++;
}
// append the item
list.EmitGet(cg);
this.item.Emit(cg);
cg.EmitCall(typeof(List), "Append");
// third loop: in reverse order
iFors = continueTargets.Length - 1;
jIters = iters.Length - 1;
while (jIters >= 0)
{
ListCompIter iter = iters[jIters];
if (iter is ListCompFor)
{
cg.Emit(OpCodes.Br, continueTargets[iFors]);
cg.FreeLocalTmp(enumerators[iFors]);
iFors--;
}
cg.MarkLabel(exitTargets[jIters]);
jIters--;
}
list.EmitGet(cg);
cg.FreeLocalTmp(list);
}
//!!! need to evaluate break/continue through a try block
public override void Emit(CodeGen cg)
{
Slot choiceVar = null;
cg.EmitPosition(start, header);
if (yieldTargets.Count > 0)
{
Label startOfBlock = cg.DefineLabel();
choiceVar = cg.GetLocalTmp(typeof(int));
cg.EmitInt(-1);
choiceVar.EmitSet(cg);
cg.Emit(OpCodes.Br, startOfBlock);
int index = 0;
foreach (YieldTarget yt in yieldTargets)
{
cg.MarkLabel(yt.topBranchTarget);
cg.EmitInt(index++);
choiceVar.EmitSet(cg);
cg.Emit(OpCodes.Br, startOfBlock);
}
cg.MarkLabel(startOfBlock);
}
Label afterCatch = new Label();
Label afterElse = cg.DefineLabel();
cg.PushTryBlock();
cg.BeginExceptionBlock();
if (yieldTargets.Count > 0)
{
int index = 0;
foreach (YieldTarget yt in yieldTargets)
{
choiceVar.EmitGet(cg);
cg.EmitInt(index);
cg.Emit(OpCodes.Beq, yt.tryBranchTarget);
index++;
}
cg.FreeLocalTmp(choiceVar);
}
body.Emit(cg);
if (yieldInExcept)
{
afterCatch = cg.DefineLabel();
cg.Emit(OpCodes.Leave, afterCatch);
}
cg.BeginCatchBlock(typeof(Exception));
// Extract state from the carrier exception
cg.EmitCallerContext();
cg.EmitCall(typeof(Ops), "ExtractException");
Slot pyExc = cg.GetLocalTmp(typeof(object));
Slot tmpExc = cg.GetLocalTmp(typeof(object));
pyExc.EmitSet(cg);
if (yieldInExcept)
{
cg.EndExceptionBlock();
cg.PopTargets();
}
foreach (TryStmtHandler handler in handlers)
{
cg.EmitPosition(handler.start, handler.header);
Label next = cg.DefineLabel();
if (handler.test != null)
{
pyExc.EmitGet(cg);
handler.test.Emit(cg);
cg.EmitCall(typeof(Ops), "CheckException");
if (handler.target != null)
{
tmpExc.EmitSet(cg);
tmpExc.EmitGet(cg);
}
cg.EmitPythonNone();
cg.Emit(OpCodes.Ceq);
cg.Emit(OpCodes.Brtrue, next);
}
if (handler.target != null)
{
tmpExc.EmitGet(cg);
handler.target.EmitSet(cg);
}
cg.PushExceptionBlock(Targets.TargetBlockType.Catch, null);
handler.body.Emit(cg);
cg.EmitCallerContext();
cg.EmitCall(typeof(Ops), "ClearException");
cg.PopTargets();
if (yieldInExcept)
{
cg.Emit(OpCodes.Br, afterElse);
}
else
{
cg.Emit(OpCodes.Leave, afterElse);
}
cg.MarkLabel(next);
}
cg.FreeLocalTmp(tmpExc);
if (yieldInExcept)
{
pyExc.EmitGet(cg);
cg.Emit(OpCodes.Throw);
cg.MarkLabel(afterCatch);
}
else
{
cg.Emit(OpCodes.Rethrow);
cg.EndExceptionBlock();
cg.PopTargets();
}
if (elseStmt != null)
{
elseStmt.Emit(cg);
}
cg.MarkLabel(afterElse);
cg.FreeLocalTmp(pyExc);
yieldTargets.Clear();
}
public override void EmitSet(CodeGen cg)
{
attribute.EmitSet(cg);
}
public override void Emit(CodeGen cg)
{
cg.EmitPosition(start, header);
Slot choiceVar = null;
Slot returnVar = null;
Label endOfTry = new Label();
if (yieldTargets.Count > 0)
{
Label startOfBlock = cg.DefineLabel();
choiceVar = cg.GetLocalTmp(typeof(int));
returnVar = cg.GetLocalTmp(typeof(bool));
cg.EmitInt(0);
returnVar.EmitSet(cg);
cg.EmitInt(-1);
choiceVar.EmitSet(cg);
cg.Emit(OpCodes.Br, startOfBlock);
int index = 0;
foreach (YieldTarget yt in yieldTargets)
{
cg.MarkLabel(yt.topBranchTarget);
cg.EmitInt(index++);
choiceVar.EmitSet(cg);
cg.Emit(OpCodes.Br, startOfBlock);
}
cg.MarkLabel(startOfBlock);
}
cg.PushTryBlock();
cg.BeginExceptionBlock();
if (yieldTargets.Count > 0)
{
int index = 0;
endOfTry = cg.DefineLabel();
foreach (YieldTarget yt in yieldTargets)
{
choiceVar.EmitGet(cg);
cg.EmitInt(index++);
cg.Emit(OpCodes.Beq, endOfTry);
}
}
body.Emit(cg);
if (yieldTargets.Count > 0)
{
cg.MarkLabel(endOfTry);
}
cg.PopTargets();
cg.PushFinallyBlock(returnVar);
cg.BeginFinallyBlock();
if (yieldTargets.Count > 0)
{
int index = 0;
foreach (YieldTarget yt in yieldTargets)
{
choiceVar.EmitGet(cg);
cg.EmitInt(index++);
cg.Emit(OpCodes.Beq, yt.tryBranchTarget);
}
}
finallyStmt.Emit(cg);
cg.EndExceptionBlock();
cg.PopTargets();
if (yieldTargets.Count > 0)
{
Label noReturn = cg.DefineLabel();
returnVar.EmitGet(cg);
cg.Emit(OpCodes.Brfalse_S, noReturn);
cg.Emit(OpCodes.Ldc_I4_1);
cg.EmitReturn();
cg.MarkLabel(noReturn);
}
yieldTargets.Clear();
}
protected Slot CreateEnvironment(CodeGen cg)
{
// Get the environment size
int size = CalculateEnvironmentSize();
// Create the array for the names
Slot namesSlot = cg.GetLocalTmp(typeof(SymbolId[]));
cg.EmitInt(size - tempsCount);
cg.Emit(System.Reflection.Emit.OpCodes.Newarr, typeof(SymbolId));
namesSlot.EmitSet(cg);
// Find the right environment type
ConstructorInfo ctor;
EnvironmentFactory esf;
Type envType = GetEnvironmentType(size, cg, out ctor, out esf);
// Emit the static link for the environment constructor
cg.EmitStaticLinkOrNull();
cg.EmitCallerContext();
// Emit the names array for the environment constructor
namesSlot.EmitGet(cg);
cg.EmitNew(ctor);
// Store the environment reference in the local
Slot environmentSlot = cg.GetFrameSlot(envType);
environmentSlot.EmitSet(cg);
// Remember the environment factory for parent access
environmentFactory = esf;
// Create environment references
environment = new Dictionary <Name, EnvironmentReference>();
foreach (KeyValuePair <Name, Binding> kv in names)
{
if (!kv.Value.IsEnvironment)
{
continue;
}
Name name = kv.Key;
EnvironmentReference er = esf.MakeEnvironmentReference(name);
Slot slot = er.CreateSlot(environmentSlot);
Slot current;
if (cg.Names.Slots.TryGetValue(name, out current))
{
slot.EmitSet(cg, current);
}
else
{
slot.EmitSetUninitialized(cg, name);
}
// Set the name into the array
namesSlot.EmitGet(cg);
cg.EmitInt(er.Index);
cg.Emit(OpCodes.Ldelema, typeof(SymbolId));
cg.EmitSymbolIdInt(name.GetString());
cg.Emit(OpCodes.Call, typeof(SymbolId).GetConstructor(new Type[] { typeof(int) }));
// The full slot goes to the codegen's namespace
cg.Names.SetSlot(name, slot);
// Environment reference goes to the environment
environment[name] = er;
}
return(environmentSlot);
}