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public static CreateWithExternalAssembly ( string sourceName, |
||
| sourceName | string | |
| assemblyName | ||
| extension | string | |
| createDynInitHelper | bool | |
| return | ||
/***
* Current host interop uses reflection, which requires pre-existing classes
* Work around this by:
* Generate a stub class that has the same interfaces and fields as the class we are generating.
* Use it as a type hint for this, and bind the simple name of the class to this stub (in resolve etc)
* Unmunge the name (using a magic prefix) on any code gen for classes
*/
static Type CompileStub(Type super, NewInstanceExpr ret, Type[] interfaces, Object frm)
{
GenContext context = Compiler.CompilerContextVar.get() as GenContext ?? GenContext.CreateWithExternalAssembly("stub" + RT.nextID().ToString(), ".dll", false);
TypeBuilder tb = context.ModuleBuilder.DefineType(Compiler.CompileStubPrefix + "." + ret.InternalName, TypeAttributes.Public | TypeAttributes.Abstract, super, interfaces);
tb.DefineDefaultConstructor(MethodAttributes.Public);
// instance fields for closed-overs
for (ISeq s = RT.keys(ret.Closes); s != null; s = s.next())
{
LocalBinding lb = (LocalBinding)s.first();
FieldAttributes access = FieldAttributes.Public;
// TODO: FIgure out Volatile
if (!ret.IsVolatile(lb))
{
access |= FieldAttributes.InitOnly;
}
if (lb.PrimitiveType != null)
{
tb.DefineField(lb.Name, lb.PrimitiveType, access);
}
else
{
tb.DefineField(lb.Name, typeof(Object), access);
}
}
// ctor that takes closed-overs and does nothing
if (ret.CtorTypes().Length > 0)
{
ConstructorBuilder cb = tb.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, ret.CtorTypes());
ILGen ilg = new ILGen(cb.GetILGenerator());
ilg.EmitLoadArg(0);
ilg.Emit(OpCodes.Call, super.GetConstructor(Type.EmptyTypes));
ilg.Emit(OpCodes.Ret);
if (ret._altCtorDrops > 0)
{
Type[] ctorTypes = ret.CtorTypes();
int newLen = ctorTypes.Length - ret._altCtorDrops;
if (newLen > 0)
{
Type[] altCtorTypes = new Type[newLen];
for (int i = 0; i < altCtorTypes.Length; i++)
{
altCtorTypes[i] = ctorTypes[i];
}
ConstructorBuilder cb2 = tb.DefineConstructor(MethodAttributes.Public, CallingConventions.HasThis, altCtorTypes);
ILGen ilg2 = new ILGen(cb2.GetILGenerator());
ilg2.EmitLoadArg(0);
for (int i = 0; i < newLen; i++)
{
ilg2.EmitLoadArg(i + 1);
}
for (int i = 0; i < ret._altCtorDrops; i++)
{
ilg2.EmitNull();
}
ilg2.Emit(OpCodes.Call, cb);
ilg2.Emit(OpCodes.Ret);
}
}
}
Type t = tb.CreateType();
Compiler.RegisterDuplicateType(t);
return(t);
}
internal static ObjExpr Build(
IPersistentVector interfaceSyms,
IPersistentVector fieldSyms,
Symbol thisSym,
string tagName,
Symbol className,
Symbol typeTag,
ISeq methodForms,
Object frm)
{
NewInstanceExpr ret = new NewInstanceExpr(null);
ret._src = frm;
ret._name = className.ToString();
ret._classMeta = GenInterface.ExtractAttributes(RT.meta(className));
ret.InternalName = ret.Name; // ret.Name.Replace('.', '/');
// Java: ret.objtype = Type.getObjectType(ret.internalName);
if (thisSym != null)
{
ret._thisName = thisSym.Name;
}
if (fieldSyms != null)
{
IPersistentMap fmap = PersistentHashMap.EMPTY;
object[] closesvec = new object[2 * fieldSyms.count()];
for (int i = 0; i < fieldSyms.count(); i++)
{
Symbol sym = (Symbol)fieldSyms.nth(i);
LocalBinding lb = new LocalBinding(-1, sym, null, new MethodParamExpr(Compiler.TagType(Compiler.TagOf(sym))), false, false);
fmap = fmap.assoc(sym, lb);
closesvec[i * 2] = lb;
closesvec[i * 2 + 1] = lb;
}
// Java TODO: inject __meta et al into closes - when?
// use array map to preserve ctor order
ret._closes = new PersistentArrayMap(closesvec);
ret._fields = fmap;
for (int i = fieldSyms.count() - 1; i >= 0 && ((Symbol)fieldSyms.nth(i)).Name.StartsWith("__"); --i)
{
ret._altCtorDrops++;
}
}
// Java TODO: set up volatiles
//ret._volatiles = PersistentHashSet.create(RT.seq(RT.get(ret._optionsMap, volatileKey)));
IPersistentVector interfaces = PersistentVector.EMPTY;
for (ISeq s = RT.seq(interfaceSyms); s != null; s = s.next())
{
Type t = (Type)Compiler.Resolve((Symbol)s.first());
if (!t.IsInterface)
{
throw new ParseException("only interfaces are supported, had: " + t.Name);
}
interfaces = interfaces.cons(t);
}
Type superClass = typeof(Object);
Dictionary <IPersistentVector, List <MethodInfo> > overrideables;
GatherMethods(superClass, RT.seq(interfaces), out overrideables);
ret._methodMap = overrideables;
//string[] inames = InterfaceNames(interfaces);
Type stub = CompileStub(superClass, ret, SeqToTypeArray(interfaces), frm);
Symbol thisTag = Symbol.intern(null, stub.FullName);
//Symbol stubTag = Symbol.intern(null,stub.FullName);
//Symbol thisTag = Symbol.intern(null, tagName);
// Needs its own GenContext so it has its own DynInitHelper
// Can't reuse Compiler.EvalContext if it is a DefType because we have to use the given name and will get a conflict on redefinition
GenContext context = Compiler.CompilerContextVar.get() as GenContext ?? (ret.IsDefType ? GenContext.CreateWithExternalAssembly("deftype" + RT.nextID().ToString(), ".dll", true) : Compiler.EvalContext);
GenContext genC = context.WithNewDynInitHelper(ret.InternalName + "__dynInitHelper_" + RT.nextID().ToString());
//genC.FnCompileMode = FnMode.Full;
try
{
Var.pushThreadBindings(
RT.map(
Compiler.ConstantsVar, PersistentVector.EMPTY,
Compiler.ConstantIdsVar, new IdentityHashMap(),
Compiler.KeywordsVar, PersistentHashMap.EMPTY,
Compiler.VarsVar, PersistentHashMap.EMPTY,
Compiler.KeywordCallsitesVar, PersistentVector.EMPTY,
Compiler.ProtocolCallsitesVar, PersistentVector.EMPTY,
Compiler.VarCallsitesVar, Compiler.EmptyVarCallSites(),
Compiler.NoRecurVar, null,
Compiler.CompilerContextVar, genC
));
if (ret.IsDefType)
{
Var.pushThreadBindings(
RT.map(
Compiler.MethodVar, null,
Compiler.LocalEnvVar, ret._fields,
Compiler.CompileStubSymVar, Symbol.intern(null, tagName),
Compiler.CompileStubClassVar, stub
));
ret._hintedFields = RT.subvec(fieldSyms, 0, fieldSyms.count() - ret._altCtorDrops);
}
// now (methodname [args] body)*
// TODO: SourceLocation?
//ret.line = (Integer)LINE.deref();
IPersistentCollection methods = null;
for (ISeq s = methodForms; s != null; s = RT.next(s))
{
NewInstanceMethod m = NewInstanceMethod.Parse(ret, (ISeq)RT.first(s), thisTag, overrideables);
methods = RT.conj(methods, m);
}
ret.Methods = methods;
ret.Keywords = (IPersistentMap)Compiler.KeywordsVar.deref();
ret.Vars = (IPersistentMap)Compiler.VarsVar.deref();
ret.Constants = (PersistentVector)Compiler.ConstantsVar.deref();
ret._constantsID = RT.nextID();
ret.KeywordCallsites = (IPersistentVector)Compiler.KeywordCallsitesVar.deref();
ret.ProtocolCallsites = (IPersistentVector)Compiler.ProtocolCallsitesVar.deref();
ret.VarCallsites = (IPersistentSet)Compiler.VarCallsitesVar.deref();
}
finally
{
if (ret.IsDefType)
{
Var.popThreadBindings();
}
Var.popThreadBindings();
}
// TOD: Really, the first stub here should be 'superclass' but can't handle hostexprs nested in method bodies -- reify method compilation takes place before this sucker is compiled, so can't replace the call.
// Might be able to flag stub classes and not try to convert, leading to a dynsite.
ret.Compile(stub, stub, interfaces, false, genC);
Compiler.RegisterDuplicateType(ret.CompiledType);
return(ret);
}
