public override void Compile(Executive engine, object form, ILGen il, LocalAccess locals, Stack<Type> st, object[] args)
{
LambdaExpr lambda = new LambdaExpr(null, locals.Parameters,
typeof(System.Object), Lisp.Arg1(form));
lambda.Isolate = false;
Type[] parameterTypes = new Type[locals.Parameters.Length];
for (int k = 0; k < parameterTypes.Length; k++)
{
//LocalBuilder local = locals.GetLocal(locals.Parameters[k].ID);
//parameterTypes[k] = local.LocalType;
//il.Emit(OpCodes.Ldloc, local);
parameterTypes[k] = locals.Parameters[k].Type;
il.Emit(OpCodes.Ldarg_2);
il.EmitInt(k);
il.Emit(OpCodes.Ldelem_Ref);
il.Emit(OpCodes.Isinst, parameterTypes[k]);
if (parameterTypes[k].IsValueType)
il.EmitUnbox(parameterTypes[k]);
}
st.Push(lambda.Compile(engine, il, locals, parameterTypes));
}
internal void CompileExpr(ILGen il, LocalAccess locals, Stack<Type> st, object lval)
{
if (lval == null)
{
il.EmitNull();
st.Push(typeof(System.Object));
}
else if (Lisp.IsNode(lval))
{
if (lval == Lisp.NIL || lval == Lisp.T)
{
if (lval == Lisp.NIL)
il.EmitNull();
else
il.Emit(OpCodes.Ldsfld, typeof(RuntimeOps).GetField("True"));
st.Push(typeof(System.Object));
}
else if (lval == Lisp.INST)
{
il.Emit(OpCodes.Ldarg_0);
il.EmitPropertyGet(typeof(CompiledLambda), "Engine");
st.Push(typeof(Executive));
}
else if (lval == Lisp.ARGV)
{
il.Emit(OpCodes.Ldarg_2);
st.Push(typeof(object[]));
}
else if (lval == Lisp.MPOOL)
{
il.Emit(OpCodes.Ldarg_3);
st.Push(typeof(MemoryPool));
}
else
{
LocalBuilder localVar = locals.GetLocal(lval);
if (localVar != null)
{
il.Emit(OpCodes.Ldloc, localVar);
st.Push(localVar.LocalType);
}
else
{
Type type = lval.GetType();
if (type == typeof(Integer))
{
il.EmitDecimal((Decimal)((Integer)lval));
il.EmitNew(typeof(Integer).GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null,
new Type[] { typeof(Decimal) }, null));
}
else if (!il.TryEmitConstant(lval, type))
{
il.Emit(OpCodes.Ldarg_1);
il.EmitInt(locals.DefineConstant(lval));
il.Emit(OpCodes.Ldelem_Ref);
if (type.IsValueType)
il.EmitUnbox(type);
}
st.Push(type);
}
}
}
else if (Lisp.IsFunctor(lval))
{
object head = Lisp.Car(lval);
object[] args = Lisp.ToArray(Lisp.Cdr(lval));
ControlFormBase control;
if (m_control.TryGetValue(head, out control))
control.Compile(this, lval, il, locals, st, args);
else
{
foreach (object a in args)
CompileExpr(il, locals, st, a);
Type[] parameterTypes = new Type[args.Length];
for (int k = args.Length - 1; k >= 0; k--)
parameterTypes[k] = st.Pop();
FuncName name = new FuncName(head, parameterTypes);
FuncBase body = GetFunc(name, false);
if (body == null)
{
bool successed = false;
if (parameterTypes.Length == 2)
{
Type castType = ValueProxy.GetType(parameterTypes[0], parameterTypes[1]);
ValueConverter converter1 = FindConverter(parameterTypes[0], castType);
ValueConverter converter2 = FindConverter(parameterTypes[1], castType);
body = GetFunc(new FuncName(name.ID, new Type[] { castType, castType }), false);
if (body != null && converter1 != null && converter2 != null)
{
LocalBuilder localVar = il.DeclareLocal(parameterTypes[1]);
il.Emit(OpCodes.Stloc, localVar);
converter1.Compile(this, il, locals, parameterTypes[0]);
il.Emit(OpCodes.Ldloc, localVar);
il.FreeLocal(localVar);
converter2.Compile(this, il, locals, parameterTypes[1]);
successed = true;
}
}
if (!successed)
{
body = GetFunc(name, true);
if (body == null)
throw new UnknownFuncCall(name.ToString());
else
{
LocalBuilder[] localVar = new LocalBuilder[parameterTypes.Length];
for (int k = localVar.Length - 1; k >= 0; k--)
{
localVar[k] = il.DeclareLocal(parameterTypes[k]);
il.Emit(OpCodes.Stloc, localVar[k]);
}
Type[] new_parameter_types = new Type[parameterTypes.Length];
for (int k = 0; k < localVar.Length; k++)
{
il.Emit(OpCodes.Ldloc, localVar[k]);
if (body.Name.GetParameterType(k) != parameterTypes[k])
{
if (parameterTypes[k].IsValueType)
il.EmitBoxing(parameterTypes[k]);
else if (ValueProxy.IsProxyType(parameterTypes[k]))
il.EmitPropertyGet(typeof(ValueProxy), "Value");
new_parameter_types[k] = typeof(System.Object);
}
else
new_parameter_types[k] = parameterTypes[k];
il.FreeLocal(localVar[k]);
}
parameterTypes = new_parameter_types;
}
}
}
Type resType = body.Compile(this, il, locals, parameterTypes);
if (resType == typeof(System.Boolean))
{ // Implict boolean convertion
Label l_false = il.DefineLabel();
Label end = il.DefineLabel();
il.Emit(OpCodes.Brfalse_S, l_false);
il.Emit(OpCodes.Ldsfld, typeof(RuntimeOps).GetField("True"));
il.Emit(OpCodes.Br_S, end);
il.MarkLabel(l_false);
il.EmitNull();
il.MarkLabel(end);
st.Push(typeof(System.Object));
}
else if (resType == typeof(void))
{ // assume that all procedures returns t
il.Emit(OpCodes.Ldsfld, typeof(RuntimeOps).GetField("True"));
st.Push(typeof(System.Object));
}
else
st.Push(resType);
}
}
else
if (Lisp.IsFunctor(Lisp.Car(lval), Lisp.LAMBDA))
{
object form = Lisp.Car(lval);
object body = Lisp.Car(Lisp.Cddr(form));
object tail = Lisp.Cdr(lval);
LambdaExpr lambda = new LambdaExpr(null, CreateParameters(Lisp.Arg1(form)),
typeof(System.Object), body);
List<Type> parameterTypesList = new List<Type>();
foreach (object a in Lisp.getIterator(tail))
{
CompileExpr(il, locals, st, a);
parameterTypesList.Add(st.Pop());
}
Type[] parameterTypes = parameterTypesList.ToArray();
FuncName name = new FuncName(null, parameterTypes);
if (!lambda.Name.Match(name, true))
throw new InvalidOperationException("Lambda parameters does not match");
st.Push(lambda.Compile(this, il, locals, parameterTypes));
}
else
throw new ArgumentException("Unproperly formated expression");
}
internal Type Compile(LambdaExpr expr)
{
Compile(expr._parameters, expr._body, expr._compiledBody);
return expr._retType;
}
private void ProcessFuncDecl(Notation notation, Notation.Record rec)
{
int stack_pos = _varTable.BeginFrame();
FunctionDecl decl = _fdecl[rec.sym];
Executive.Parameter[] executiveParameters = new Executive.Parameter[decl.parameters.Length];
for (int k = 0; k < decl.parameters.Length; k++)
{
FunctionParameter p = decl.parameters[k];
executiveParameters[k].ID = p.id;
executiveParameters[k].Type = p.type.ValueType;
executiveParameters[k].VariableParam = false;
_varTable.PushVar(p.id, p.type);
}
if (rec.args.Length > 3)
{
if (rec.args[3] == null) // external
throw new NotImplementedException();
else
{
XQueryExprBase expr = (XQueryExprBase)ProcessExpr(notation, rec.args[3]);
object body = expr.ToLispFunction();
if (decl.returnType != XQuerySequenceType.Item)
{
XQuerySequenceType type = EvalExprType(body);
if (!decl.returnType.Equals(type))
body = Lisp.List(ID.CastArg, body, decl.returnType);
}
LambdaExpr lambdaExpr = new LambdaExpr(decl.f, executiveParameters, typeof(System.Object), body);
_context.Engine.Defun(lambdaExpr);
}
}
else
{
if (rec.args[2] == null) // external
throw new NotImplementedException();
else
{
XQueryExprBase expr = (XQueryExprBase)ProcessExpr(notation, rec.args[2]);
LambdaExpr lambdaExpr = new LambdaExpr(decl.f, executiveParameters, typeof(System.Object),
expr.ToLispFunction());
_context.Engine.Defun(lambdaExpr);
}
}
_varTable.EndFrame(stack_pos);
}