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 return pi [pos].ParameterType;
60 public string ParameterName (int pos)
62 if (last_arg_is_params && pos >= pi.Length - 1)
63 return pi [pi.Length - 1].Name;
68 public string ParameterDesc (int pos)
70 StringBuilder sb = new StringBuilder ();
78 if (pos >= pi.Length - 1 && last_arg_is_params)
79 sb.Append ("params ");
81 sb.Append (TypeManager.CSharpName (ParameterType (pos)));
83 return sb.ToString ();
87 public Parameter.Modifier ParameterModifier (int pos)
92 if (last_arg_is_params)
93 return Parameter.Modifier.PARAMS;
95 Type t = pi [pos].ParameterType;
97 if ((pi [pos].Attributes & ParameterAttributes.Out) != 0)
98 return Parameter.Modifier.ISBYREF | Parameter.Modifier.OUT;
100 return Parameter.Modifier.ISBYREF | Parameter.Modifier.REF;
103 return Parameter.Modifier.NONE;
114 public class InternalParameters : ParameterData {
117 public readonly Parameters Parameters;
119 public InternalParameters (Type [] param_types, Parameters parameters)
121 this.param_types = param_types;
122 this.Parameters = parameters;
125 public InternalParameters (DeclSpace ds, Parameters parameters)
126 : this (parameters.GetParameterInfo (ds), parameters)
132 if (param_types == null)
135 return param_types.Length;
139 public Type ParameterType (int pos)
141 if (param_types == null)
144 Parameter [] fixed_pars = Parameters.FixedParameters;
145 if (fixed_pars != null){
146 int len = fixed_pars.Length;
148 return Parameters.FixedParameters [pos].ParameterType;
150 return Parameters.ArrayParameter.ParameterType;
152 return Parameters.ArrayParameter.ParameterType;
155 public string ParameterName (int pos)
159 if (pos >= Parameters.FixedParameters.Length)
160 p = Parameters.ArrayParameter;
162 p = Parameters.FixedParameters [pos];
167 public string ParameterDesc (int pos)
169 string tmp = String.Empty;
172 if (pos >= Parameters.FixedParameters.Length)
173 p = Parameters.ArrayParameter;
175 p = Parameters.FixedParameters [pos];
178 // We need to and for REF/OUT, because if either is set the
179 // extra flag ISBYREF will be set as well
181 if ((p.ModFlags & Parameter.Modifier.REF) != 0)
183 else if ((p.ModFlags & Parameter.Modifier.OUT) != 0)
185 else if (p.ModFlags == Parameter.Modifier.PARAMS)
188 Type t = ParameterType (pos);
190 return tmp + TypeManager.CSharpName (t);
193 public Parameter.Modifier ParameterModifier (int pos)
195 Parameter.Modifier mod;
197 if (Parameters.FixedParameters == null) {
198 if (Parameters.ArrayParameter != null)
199 mod = Parameters.ArrayParameter.ModFlags;
201 mod = Parameter.Modifier.NONE;
202 } else if (pos >= Parameters.FixedParameters.Length)
203 mod = Parameters.ArrayParameter.ModFlags;
205 mod = Parameters.FixedParameters [pos].ModFlags;
207 if ((mod & (Parameter.Modifier.REF | Parameter.Modifier.OUT)) != 0)
208 mod |= Parameter.Modifier.ISBYREF;
215 class PtrHashtable : Hashtable {
216 class PtrComparer : IComparer {
217 public int Compare (object x, object y)
226 public PtrHashtable ()
228 comparer = new PtrComparer ();
233 // Compares member infos based on their name and
234 // also allows one argument to be a string
236 class MemberInfoCompare : IComparer {
238 public int Compare (object a, object b)
240 if (a == null || b == null){
241 Console.WriteLine ("Invalid information passed");
242 throw new Exception ();
246 return String.Compare ((string) a, ((MemberInfo)b).Name);
249 return String.Compare (((MemberInfo)a).Name, (string) b);
251 return String.Compare (((MemberInfo)a).Name, ((MemberInfo)b).Name);
257 public object Second;
259 public Pair (object f, object s)