public InvokeStatic(Object ID, MethodInfo mi)
{
_methodInfo = mi;
_implictExecutive = false;
ParameterInfo[] parameter_info = _methodInfo.GetParameters();
List<Executive.Parameter> parameters = new List<Executive.Parameter>();
foreach (ParameterInfo pi in parameter_info)
{
if (pi.IsByRefParameter())
throw new ArgumentException("ByRef parameter is not allowed");
Executive.Parameter p = new Executive.Parameter();
p.Type = pi.ParameterType;
if (pi.Position == 0 && pi.ParameterType == typeof(Executive))
{
object[] attrs = pi.GetCustomAttributes(true);
foreach (object atr in attrs)
if (atr is ImplictAttribute)
{
_implictExecutive = true;
break;
}
if (_implictExecutive)
continue;
}
else if (pi.ParameterType.IsArray &&
pi.Position == parameter_info.Length - 1)
{
object[] attrs = pi.GetCustomAttributes(true);
foreach (object atr in attrs)
if (atr is System.ParamArrayAttribute)
{
p.VariableParam = true;
p.Type = pi.ParameterType.GetElementType();
break;
}
}
parameters.Add(p);
}
Name = new FuncName(ID, parameters.ToArray());
}
public void Register(object id, MethodInfo method)
{
bool context = false;
XQueryFunctionRecord rec = new XQueryFunctionRecord();
rec.id = id;
object[] attrs = method.GetCustomAttributes(typeof(XQuerySignatureAttribute), false);
XQuerySignatureAttribute sig = null;
if (attrs.Length > 0)
sig = (XQuerySignatureAttribute)attrs[0];
ParameterInfo[] parameter_info = method.GetParameters();
List<XQuerySequenceType> type_list = new List<XQuerySequenceType>();
int implict = -1;
foreach (ParameterInfo pi in parameter_info)
{
if (pi.ParameterType == typeof(IContextProvider))
{
if (context)
throw new ArgumentException(pi.Name);
context = true;
continue;
}
bool customized = false;
bool variableParam = false;
object[] pi_attrs = pi.GetCustomAttributes(false);
foreach (object pi_atr in pi_attrs)
{
if (pi_atr is System.ParamArrayAttribute)
variableParam = true;
else if (pi_atr is ImplictAttribute)
{
customized = true;
if (implict != -1)
throw new ArgumentException(pi.Name);
implict = pi.Position;
}
else
{
XQueryParameterAttribute xattr = pi_atr as XQueryParameterAttribute;
if (xattr != null)
{
type_list.Add(new XQuerySequenceType(xattr.TypeCode, xattr.Cardinality, variableParam ?
pi.ParameterType.GetElementType() : pi.ParameterType));
customized = true;
break;
}
}
}
if (!customized)
{
if (pi.ParameterType == typeof(XQueryNodeIterator))
type_list.Add(new XQuerySequenceType(XmlTypeCode.Item, XmlTypeCardinality.ZeroOrMore, pi.ParameterType));
else
type_list.Add(new XQuerySequenceType(pi.ParameterType, XmlTypeCardinality.One));
}
}
if (sig != null && sig.Return != XmlTypeCode.None)
rec.returnType = new XQuerySequenceType(sig.Return, sig.Cardinality, method.ReturnType);
else
{
if (method.ReturnType == typeof(XQueryNodeIterator))
rec.returnType = new XQuerySequenceType(XmlTypeCode.Item, XmlTypeCardinality.ZeroOrMore, method.ReturnType);
else
rec.returnType = new XQuerySequenceType(method.ReturnType, XmlTypeCardinality.One);
}
if (sig != null)
{
rec.variableParams = sig.VariableParams;
rec.validationReader = sig.ValidationReaderDemanded;
}
rec.parameters = type_list.ToArray();
FunctionSocket sock = new FunctionSocket(rec);
FunctionSocket next;
if (m_table.TryGetValue(rec.id, out next))
{
FunctionSocket curr = next;
while (curr != null)
{
if (curr.rec.parameters.Length == rec.parameters.Length &&
curr.rec.variableParams == rec.variableParams)
throw new InvalidOperationException(method.ToString());
curr = curr.next;
}
sock.next = next;
}
m_table[rec.id] = sock;
GlobalSymbols.DefineStaticOperator(rec.id, method);
if (context)
{
object[] body;
Executive.Parameter[] parameters;
if (implict == -1)
{
parameters = new Executive.Parameter[parameter_info.Length - 1];
body = new object[parameter_info.Length + 2];
}
else
{
parameters = new Executive.Parameter[parameter_info.Length - 2];
body = new object[parameter_info.Length + 1];
}
int k = 0;
int i = 2;
body[0] = Funcs.List;
body[1] = Lisp.List(Lisp.QUOTE, rec.id);
foreach (ParameterInfo pi in parameter_info)
{
if (pi.Position != implict)
{
if (pi.ParameterType != typeof(IContextProvider))
{
parameters[k] = new Executive.Parameter();
parameters[k].ID = ATOM.Create(String.Format("p{0}", k + 1));
parameters[k].Type = typeof(System.Object);
parameters[k].VariableParam = false;
body[i++] = parameters[k].ID;
k++;
}
else
body[i++] = Lisp.List(Lisp.QUOTE, ID.Context);
}
}
GlobalSymbols.Defmacro(rec.id, parameters, Lisp.List(body));
}
}
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);
}
public static bool ForAny([Implict] Executive engine, Resultset rs, object param, object body)
{
FunctionLink compiledBody = new FunctionLink();
Executive.Parameter[] parameters = new Executive.Parameter[1];
parameters[0].ID = param;
parameters[0].Type = typeof(System.Object);
object[] args = new object[1];
while (rs.Begin != null)
{
Row row = rs.Dequeue();
if (!row.HasNullValues)
{
if (row.Length == 1)
args[0] = row.ItemArray[0];
else
args[0] = Lisp.List(row.ItemArray);
object res = engine.Apply(null, parameters, body, args, compiledBody, engine.DefaultPool);
if (res != null && res != Undefined.Value)
{
rs.Cancel();
return true;
}
}
}
return false;
}
