public override void Emit(CodeGen cg)
{
// TODO: Improve the following to direct call: Callable.Call(Callable.Create(...))
//EmitLocation(cg);
if (_instance != null && !cg.IsDynamicMethod) // damn DM! // go away! // this dangerous too for now
{
if (!IsParamsMethod())
{
if (_instance is CodeBlockExpression)
{
CodeBlockExpression cbe = (CodeBlockExpression)_instance;
Debug.Assert(_arguments.Count == _parameterInfos.Length);
for (int arg = 0; arg < _parameterInfos.Length; arg++)
{
Expression argument = _arguments[arg];
Type type = _parameterInfos[arg].ParameterType;
EmitArgument(cg, argument, type);
}
EmitLocation(cg);
if (tailcall)
{
// TODO: Remove tail calls from list of known non-recursive methods
//Console.WriteLine(cbe.Block.Name);
tailcall = true;
}
cbe.EmitDirect(cg, tailcall);
if (ScriptDomainManager.Options.LightweightDebugging && !tailcall && Span.IsValid)
{
cg.EmitConstant(SpanToLong(Span));
cg.EmitCall(Debugging.DebugMethods.ExpressionOut);
}
return;
}
}
else // 'params'
{
}
}
if (_method == BuiltinsIsTrue)
{
EmitLocation(cg);
var arg = Unwrap(_arguments[0]);
if (arg.Type == typeof(bool))
{
arg.Emit(cg);
}
else if (arg.Type == typeof(object))
{
Label next = cg.DefineLabel();
Label end = cg.DefineLabel();
arg.Emit(cg);
cg.Emit(OpCodes.Dup);
cg.Emit(OpCodes.Isinst, typeof(bool));
cg.Emit(OpCodes.Brfalse, next);
cg.EmitUnbox(typeof(bool));
cg.Emit(OpCodes.Br, end);
cg.MarkLabel(next);
cg.Emit(OpCodes.Pop);
cg.EmitConstant(true);
cg.MarkLabel(end);
}
else
{
cg.EmitConstant(true);
}
return;
}
var ii = _instance;
ii = Unwrap(ii);
BoundExpression.Emitter fixup = null;
bool varargs = false;
var pttt = Array.ConvertAll(_parameterInfos, x => x.ParameterType);
if (ii is BoundExpression)
{
var be = ii as BoundExpression;
if (BoundExpression.Fixups.ContainsKey(be.Variable.Name))
{
fixup = BoundExpression.Fixups[be.Variable.Name];
pttt = BoundExpression.FixupTypes[be.Variable.Name];
}
else
{
CodeGen rcg;
CodeGenDescriptor[] cgd;
if (CodeGen._codeBlockLookup.TryGetValue(be.Variable.Name, out rcg))
{
var lpttt = pt.GetValue(rcg.MethodInfo) as Type[];
if (_arguments.Count == lpttt.Length)
{
_method = rcg.MethodInfo;
pttt = lpttt;
}
}
else if (CodeGen._codeBlockLookupX.TryGetValue(be.Variable.Name, out rcg))
{
var lpppt = pt.GetValue(rcg.MethodInfo) as Type[];
if (lpppt.Length - 1 > _arguments.Count)
{
}
else if (AllArgsAreObject(_arguments))
{
_method = rcg.MethodInfo;
pttt = lpppt;
varargs = true;
}
else if (_arguments.Count == 1 && lpppt.Length == 1 &&
_arguments[0].Type == typeof(object[]) && _arguments[0] is MethodCallExpression &&
((MethodCallExpression)_arguments[0])._method.Name == "ListToVector")
{
_arguments[0] = Unwrap(((MethodCallExpression)_arguments[0]).Arguments[0]);
_method = rcg.MethodInfo;
pttt = lpppt;
}
}
else if (CodeGen._codeBlockLookupN.TryGetValue(be.Variable.Name, out cgd))
{
if (AllArgsAreObject(_arguments))
{
foreach (var i in cgd)
{
if (i.arity == _arguments.Count)
{
_method = i.cg.MethodInfo;
pttt = pt.GetValue(_method) as Type[];
break;
}
}
}
}
}
}
// Emit instance, if calling an instance method
if (!_method.IsStatic)
{
Type type = _method.DeclaringType;
if (type.IsValueType)
{
_instance.EmitAddress(cg, type);
}
else
{
if (fixup == null)
{
_instance.Emit(cg);
}
}
}
if (varargs)
{
int arg = 0;
for (; arg < pttt.Length - 1; arg++)
{
Expression argument = _arguments[arg];
Type type = pttt[arg];
EmitArgument(cg, argument, type);
}
// make tail
var tailargs = new List <Expression>();
for (; arg < _arguments.Count; arg++)
{
tailargs.Add(_arguments[arg]);
}
var tailarr = tailargs.ToArray();
var tail = Ast.ComplexCallHelper(MakeList(tailarr, true), tailarr);
EmitArgument(cg, tail, typeof(object));
}
else
{
// Emit arguments
// we cant really complain here or show error...
Debug.Assert(_arguments.Count == pttt.Length);
for (int arg = 0; arg < pttt.Length && arg < _arguments.Count; arg++)
{
Expression argument = _arguments[arg];
Type type = pttt[arg];
EmitArgument(cg, argument, type);
}
}
// check for possible conversion/boxing needed, disabled tail call
if (tailcall)
{
if (ShouldTailCallBeRemoved(cg))
{
//Console.WriteLine("Removing tail call: {0} in {1}", cg.MethodBase, cg.TypeGen.AssemblyGen.AssemblyBuilder);
tailcall = false;
}
}
EmitLocation(cg);
// Emit the actual call
if (fixup == null)
{
cg.EmitCall(_method, tailcall);
}
else
{
fixup(cg, tailcall);
}
if (ScriptDomainManager.Options.LightweightDebugging && !tailcall && Span.IsValid)
{
cg.EmitConstant(SpanToLong(Span));
cg.EmitCall(Debugging.DebugMethods.ExpressionOut);
}
}