2 // support.cs: Support routines to work around the fact that System.Reflection.Emit
3 // can not introspect types that are being constructed
6 // Miguel de Icaza (miguel@ximian.com)
8 // (C) 2001 Ximian, Inc (http://www.ximian.com)
13 using System.Reflection;
14 using System.Collections;
15 using System.Reflection.Emit;
16 using System.Globalization;
18 namespace Mono.CSharp {
20 public interface ParameterData {
21 Type ParameterType (int pos);
23 string ParameterName (int pos);
24 string ParameterDesc (int pos);
25 Parameter.Modifier ParameterModifier (int pos);
28 public class ReflectionParameters : ParameterData {
30 bool last_arg_is_params = false;
32 public ReflectionParameters (ParameterInfo [] pi)
37 int count = pi.Length-1;
40 attrs = pi [count].GetCustomAttributes (TypeManager.param_array_type, true);
45 if (attrs.Length == 0)
48 last_arg_is_params = true;
52 public Type ParameterType (int pos)
54 if (last_arg_is_params && pos >= pi.Length - 1)
55 return pi [pi.Length - 1].ParameterType;
57 Type t = pi [pos].ParameterType;
60 return t.GetElementType ();
66 public string ParameterName (int pos)
68 if (last_arg_is_params && pos >= pi.Length - 1)
69 return pi [pi.Length - 1].Name;
74 public string ParameterDesc (int pos)
76 StringBuilder sb = new StringBuilder ();
84 if (pos >= pi.Length - 1 && last_arg_is_params)
85 sb.Append ("params ");
87 sb.Append (TypeManager.CSharpName (ParameterType (pos)));
89 return sb.ToString ();
93 public Parameter.Modifier ParameterModifier (int pos)
98 if (last_arg_is_params)
99 return Parameter.Modifier.PARAMS;
101 Type t = pi [pos].ParameterType;
103 if ((pi [pos].Attributes & ParameterAttributes.Out) != 0)
104 return Parameter.Modifier.ISBYREF | Parameter.Modifier.OUT;
106 return Parameter.Modifier.ISBYREF | Parameter.Modifier.REF;
109 return Parameter.Modifier.NONE;
120 public class InternalParameters : ParameterData {
123 public readonly Parameters Parameters;
125 public InternalParameters (Type [] param_types, Parameters parameters)
127 this.param_types = param_types;
128 this.Parameters = parameters;
131 public InternalParameters (DeclSpace ds, Parameters parameters)
132 : this (parameters.GetParameterInfo (ds), parameters)
138 if (param_types == null)
141 return param_types.Length;
145 Parameter GetParameter (int pos)
147 Parameter [] fixed_pars = Parameters.FixedParameters;
148 if (fixed_pars != null){
149 int len = fixed_pars.Length;
151 return Parameters.FixedParameters [pos];
154 return Parameters.ArrayParameter;
157 public Type ParameterType (int pos)
159 if (param_types == null)
162 return GetParameter (pos).ParameterType;
166 public string ParameterName (int pos)
168 return GetParameter (pos).Name;
171 public string ParameterDesc (int pos)
173 string tmp = String.Empty;
174 Parameter p = GetParameter (pos);
177 // We need to and for REF/OUT, because if either is set the
178 // extra flag ISBYREF will be set as well
180 if ((p.ModFlags & Parameter.Modifier.REF) != 0)
182 else if ((p.ModFlags & Parameter.Modifier.OUT) != 0)
184 else if (p.ModFlags == Parameter.Modifier.PARAMS)
187 Type t = ParameterType (pos);
189 return tmp + TypeManager.CSharpName (t);
192 public Parameter.Modifier ParameterModifier (int pos)
194 Parameter.Modifier mod = GetParameter (pos).ModFlags;
196 if ((mod & (Parameter.Modifier.REF | Parameter.Modifier.OUT)) != 0)
197 mod |= Parameter.Modifier.ISBYREF;
204 class PtrHashtable : Hashtable {
205 class PtrComparer : IComparer {
206 public int Compare (object x, object y)
215 public PtrHashtable ()
217 comparer = new PtrComparer ();
222 // Compares member infos based on their name and
223 // also allows one argument to be a string
225 class MemberInfoCompare : IComparer {
227 public int Compare (object a, object b)
229 if (a == null || b == null){
230 Console.WriteLine ("Invalid information passed");
231 throw new Exception ();
235 return String.Compare ((string) a, ((MemberInfo)b).Name);
238 return String.Compare (((MemberInfo)a).Name, (string) b);
240 return String.Compare (((MemberInfo)a).Name, ((MemberInfo)b).Name);
246 public object Second;
248 public Pair (object f, object s)