[vala] Report error when throwing internal errors from public methods

[Jürg Billeter <juergbi src gnome org>]

commit 645c75f135d29343241761b574d5eacee600dd8e
Author: Jürg Billeter <j bitron ch>
Date:   Tue Sep 14 09:34:09 2010 +0200

    Report error when throwing internal errors from public methods

 vala/valamethod.vala |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/vala/valamethod.vala b/vala/valamethod.vala
index 446a3f7..d48d356 100644
--- a/vala/valamethod.vala
+++ b/vala/valamethod.vala
@@ -887,6 +887,13 @@ public class Vala.Method : Symbol {
 
 		foreach (DataType error_type in get_error_types ()) {
 			error_type.check (analyzer);
+
+			// check whether error type is at least as accessible as the method
+			if (!analyzer.is_type_accessible (this, error_type)) {
+				error = true;
+				Report.error (source_reference, "error type `%s` is less accessible than method `%s`".printf (error_type.to_string (), get_full_name ()));
+				return false;
+			}
 		}
 
 		if (result_var != null) {