+
+ internal struct ILExceptionBlock {
+ public const int CATCH = 0;
+ public const int FILTER = 1;
+ public const int FINALLY = 2;
+ public const int FAULT = 4;
+
+ internal Type extype;
+ internal int type;
+ internal int start;
+ internal int len;
+ internal int filter_offset;
+
+ internal void Debug () {
+#if NO
+ System.Console.Write ("\ttype="+type.ToString()+" start="+start.ToString()+" len="+len.ToString());
+ if (extype != null)
+ System.Console.WriteLine (" extype="+extype.ToString());
+ else
+ System.Console.WriteLine ("");
+#endif
+ }
+ }
+ internal struct ILExceptionInfo {
+ ILExceptionBlock[] handlers;
+ internal int start;
+ int len;
+ internal Label end;
+
+ internal int NumHandlers ()
+ {
+ return handlers.Length;
+ }
+
+ internal void AddCatch (Type extype, int offset)
+ {
+ int i;
+ End (offset);
+ add_block (offset);
+ i = handlers.Length - 1;
+ handlers [i].type = ILExceptionBlock.CATCH;
+ handlers [i].start = offset;
+ handlers [i].extype = extype;
+ }
+
+ internal void AddFinally (int offset)
+ {
+ int i;
+ End (offset);
+ add_block (offset);
+ i = handlers.Length - 1;
+ handlers [i].type = ILExceptionBlock.FINALLY;
+ handlers [i].start = offset;
+ handlers [i].extype = null;
+ }
+
+ internal void AddFault (int offset)
+ {
+ int i;
+ End (offset);
+ add_block (offset);
+ i = handlers.Length - 1;
+ handlers [i].type = ILExceptionBlock.FAULT;
+ handlers [i].start = offset;
+ handlers [i].extype = null;
+ }
+
+ internal void End (int offset)
+ {
+ if (handlers == null)
+ return;
+ int i = handlers.Length - 1;
+ if (i >= 0)
+ handlers [i].len = offset - handlers [i].start;
+ }
+
+ internal int LastClauseType ()
+ {
+ if (handlers != null)
+ return handlers [handlers.Length-1].type;
+ else
+ return ILExceptionBlock.CATCH;
+ }
+
+ internal void Debug (int b)
+ {
+#if NO
+ System.Console.WriteLine ("Handler {0} at {1}, len: {2}", b, start, len);
+ for (int i = 0; i < handlers.Length; ++i)
+ handlers [i].Debug ();
+#endif
+ }
+
+ void add_block (int offset)
+ {
+ if (handlers != null) {
+ int i = handlers.Length;
+ ILExceptionBlock[] new_b = new ILExceptionBlock [i + 1];
+ System.Array.Copy (handlers, new_b, i);
+ handlers = new_b;
+ handlers [i].len = offset - handlers [i].start;
+ } else {
+ handlers = new ILExceptionBlock [1];
+ len = offset - start;
+ }
+ }
+ }
+
+ internal struct ILTokenInfo {
+ public MemberInfo member;
+ public int code_pos;
+ }
+
+ internal interface TokenGenerator {
+ int GetToken (string str);
+
+ int GetToken (MemberInfo member);
+
+ int GetToken (MethodInfo method, Type[] opt_param_types);
+
+ int GetToken (SignatureHelper helper);
+ }
+