mcs/gmcs/tree.cs

   1 //
   2 // tree.cs: keeps a tree representation of the generated code
   3 //
   4 // Author: Miguel de Icaza (miguel@gnu.org)
   5 //
   6 // Licensed under the terms of the GNU GPL
   7 //
   8 // (C) 2001 Ximian, Inc (http://www.ximian.com)
   9 //
  10 //
  11
  12 using System;
  13 using System.Collections;
  14 using System.Reflection;
  15 using System.Reflection.Emit;
  16 using System.IO;
  17
  18 namespace Mono.CSharp
  19 {
  20
  21         public interface ITreeDump {
  22                 int  Dump (Tree tree, StreamWriter output);
  23                 void ParseOptions (string options);
  24         }
  25
  26         // <summary>
  27         //
  28         //   We store here all the toplevel types that we have parsed,
  29         //   this is the root of all information we have parsed.
  30         //
  31         // </summary>
  32
  33         public class Tree {
  34                 TypeContainer root_types;
  35
  36                 // <summary>
  37                 //   Keeps track of all the types definied (classes, structs, ifaces, enums)
  38                 // </summary>
  39                 Hashtable decls;
  40
  41                 public Tree ()
  42                 {
  43                         root_types = new RootTypes ();
  44
  45                         decls = new Hashtable ();
  46                 }
  47
  48                 public void RecordDecl (MemberName name, DeclSpace ds)
  49                 {
  50                         DeclSpace other = (DeclSpace) decls [name];
  51                         if (other != null){
  52                                 PartialContainer other_pc = other as PartialContainer;
  53                                 if ((ds is TypeContainer) && (other_pc != null)) {
  54                                         Report.Error (
  55                                                 260, ds.Location, "Missing partial modifier " +
  56                                                 "on declaration of type `{0}'; another " +
  57                                                 "partial implementation of this type exists",
  58                                                 name);
  59
  60                                         Report.LocationOfPreviousError (other.Location);
  61                                         return;
  62                                 }
  63
  64                                 Report.SymbolRelatedToPreviousError (
  65                                         other.Location, other.GetSignatureForError ());
  66
  67                                 Report.Error (
  68                                         101, ds.Location,
  69                                         "There is already a definition for `" + name + "'");
  70                                 return;
  71                         }
  72
  73                         ds.RecordDecl ();
  74
  75                         decls.Add (name, ds);
  76                 }
  77
  78                 //
  79                 // FIXME: Why are we using Types?
  80                 //
  81                 public TypeContainer Types {
  82                         get {
  83                                 return root_types;
  84                         }
  85                 }
  86
  87                 public DeclSpace GetDecl (MemberName name)
  88                 {
  89                         return (DeclSpace) decls [name];
  90                 }
  91
  92                 public Hashtable AllDecls {
  93                         get {
  94                                 return decls;
  95                         }
  96                 }
  97         }
  98
  99         public class RootTypes : TypeContainer
 100         {
 101                 public RootTypes ()
 102                         : base (null, null, MemberName.Null, null, Kind.Root, Location.Null)
 103                 {
 104                         ec = new EmitContext (null, this, Location.Null, null, null, 0, false);
 105                 }
 106
 107                 public override PendingImplementation GetPendingImplementations ()
 108                 {
 109                         throw new InvalidOperationException ();
 110                 }
 111
 112                 public override bool IsClsComplianceRequired (DeclSpace ds)
 113                 {
 114                         return true;
 115                 }
 116
 117         }
 118 }