[vala] Avoic C warnings for some possibly unused functions

[Jürg Billeter <juergbi src gnome org>]

commit 6d30c0aa37ffabf26b3c172158a45df514d7670e
Author: Jürg Billeter <j bitron ch>
Date:   Sun Mar 21 09:51:24 2010 +0100

    Avoic C warnings for some possibly unused functions

 ccode/valaccodefunction.vala          |   11 ++++++++++-
 codegen/valaccodebasemodule.vala      |    2 ++
 codegen/valagtypemodule.vala          |    6 ++++++
 codegen/valatyperegisterfunction.vala |    6 +++++-
 4 files changed, 23 insertions(+), 2 deletions(-)
---
diff --git a/ccode/valaccodefunction.vala b/ccode/valaccodefunction.vala
index 1dfef1b..2b3775d 100644
--- a/ccode/valaccodefunction.vala
+++ b/ccode/valaccodefunction.vala
@@ -1,6 +1,6 @@
 /* valaccodefunction.vala
  *
- * Copyright (C) 2006-2009  Jürg Billeter
+ * Copyright (C) 2006-2010  Jürg Billeter
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -41,6 +41,8 @@ public class Vala.CCodeFunction : CCodeNode {
 	 */
 	public string return_type { get; set; }
 
+	public string attributes { get; set; }
+
 	/**
 	 * The function body.
 	 */
@@ -70,6 +72,7 @@ public class Vala.CCodeFunction : CCodeNode {
 	public CCodeFunction copy () {
 		var func = new CCodeFunction (name, return_type);
 		func.modifiers = modifiers;
+		func.attributes = attributes;
 
 		/* no deep copy for lists available yet
 		 * func.parameters = parameters.copy ();
@@ -109,7 +112,13 @@ public class Vala.CCodeFunction : CCodeNode {
 		}
 		
 		writer.write_string (")");
+
 		if (block == null) {
+			if (attributes != null) {
+				writer.write_string (" ");
+				writer.write_string (attributes);
+			}
+
 			writer.write_string (";");
 		} else {
 			block.write (writer);
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index dd2a158..edb496b 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -772,6 +772,8 @@ internal class Vala.CCodeBaseModule : CCodeModule {
 
 		if (en.access == SymbolAccessibility.PRIVATE) {
 			regfun.modifiers = CCodeModifiers.STATIC;
+			// avoid C warning as this function is not always used
+			regfun.attributes = "G_GNUC_UNUSED";
 		}
 
 		decl_space.add_type_member_declaration (regfun);
diff --git a/codegen/valagtypemodule.vala b/codegen/valagtypemodule.vala
index c99a381..62c1b1d 100644
--- a/codegen/valagtypemodule.vala
+++ b/codegen/valagtypemodule.vala
@@ -118,6 +118,8 @@ internal class Vala.GTypeModule : GErrorModule {
 
 			if (cl.access == SymbolAccessibility.PRIVATE) {
 				function.modifiers = CCodeModifiers.STATIC;
+				// avoid C warning as this function is not always used
+				function.attributes = "G_GNUC_UNUSED";
 			}
 
 			decl_space.add_type_member_declaration (function);
@@ -128,6 +130,8 @@ internal class Vala.GTypeModule : GErrorModule {
 
 			if (cl.access == SymbolAccessibility.PRIVATE) {
 				function.modifiers = CCodeModifiers.STATIC;
+				// avoid C warning as this function is not always used
+				function.attributes = "G_GNUC_UNUSED";
 			}
 
 			decl_space.add_type_member_declaration (function);
@@ -137,6 +141,8 @@ internal class Vala.GTypeModule : GErrorModule {
 
 			if (cl.access == SymbolAccessibility.PRIVATE) {
 				function.modifiers = CCodeModifiers.STATIC;
+				// avoid C warning as this function is not always used
+				function.attributes = "G_GNUC_UNUSED";
 			}
 
 			decl_space.add_type_member_declaration (function);
diff --git a/codegen/valatyperegisterfunction.vala b/codegen/valatyperegisterfunction.vala
index 4b4ffcb..571bca6 100644
--- a/codegen/valatyperegisterfunction.vala
+++ b/codegen/valatyperegisterfunction.vala
@@ -1,6 +1,6 @@
 /* valatyperegisterfunction.vala
  *
- * Copyright (C) 2006-2009  Jürg Billeter
+ * Copyright (C) 2006-2010  Jürg Billeter
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -71,6 +71,8 @@ public abstract class Vala.TypeRegisterFunction {
 			/* Function will not be prototyped anyway */
 			if (get_accessibility () == SymbolAccessibility.PRIVATE) {
 				fun.modifiers = CCodeModifiers.STATIC;
+				// avoid C warning as this function is not always used
+				fun.attributes = "G_GNUC_UNUSED";
 			}
 		} else {
 			fun = new CCodeFunction ("%s_register_type".printf (get_type_declaration ().get_lower_case_cname (null)), "GType");
@@ -79,6 +81,8 @@ public abstract class Vala.TypeRegisterFunction {
 			var get_fun = new CCodeFunction ("%s_get_type".printf (get_type_declaration ().get_lower_case_cname (null)), "GType");
 			if (get_accessibility () == SymbolAccessibility.PRIVATE) {
 				fun.modifiers = CCodeModifiers.STATIC;
+				// avoid C warning as this function is not always used
+				fun.attributes = "G_GNUC_UNUSED";
 			}
 
 			declaration_fragment.append (get_fun.copy ());