Mono.CSharp.TryCatch.Resolve C# (CSharp) Method

		public override bool Resolve (BlockContext ec)
		{
			bool ok = true;

			ec.StartFlowBranching (this);

			if (!Block.Resolve (ec))
				ok = false;

			TypeSpec[] prev_catches = new TypeSpec [Specific.Count];
			int last_index = 0;
			foreach (Catch c in Specific){
				ec.CurrentBranching.CreateSibling (c.Block, FlowBranching.SiblingType.Catch);

				if (!c.Resolve (ec)) {
					ok = false;
					continue;
				}

				TypeSpec resolved_type = c.CatchType;
				for (int ii = 0; ii < last_index; ++ii) {
					if (resolved_type == prev_catches[ii] || TypeSpec.IsBaseClass (resolved_type, prev_catches[ii], true)) {
						ec.Report.Error (160, c.loc,
							"A previous catch clause already catches all exceptions of this or a super type `{0}'",
							TypeManager.CSharpName (prev_catches [ii]));
						ok = false;
					}
				}

				prev_catches [last_index++] = resolved_type;
			}

			if (General != null) {
				foreach (Catch c in Specific) {
					if (c.CatchType != TypeManager.exception_type)
						continue;

					if (!ec.Module.DeclaringAssembly.WrapNonExceptionThrows)
						continue;

					if (!ec.Module.PredefinedAttributes.RuntimeCompatibility.IsDefined)
						continue;

					ec.Report.Warning (1058, 1, c.loc,
						"A previous catch clause already catches all exceptions. All non-exceptions thrown will be wrapped in a `System.Runtime.CompilerServices.RuntimeWrappedException'");
				}

				ec.CurrentBranching.CreateSibling (General.Block, FlowBranching.SiblingType.Catch);

				if (!General.Resolve (ec))
					ok = false;
			}

			ec.EndFlowBranching ();

			// System.Reflection.Emit automatically emits a 'leave' at the end of a try/catch clause
			// So, ensure there's some IL code after this statement
			if (!inside_try_finally && !code_follows && ec.CurrentBranching.CurrentUsageVector.IsUnreachable)
				ec.NeedReturnLabel ();

			return ok;
		}