[vala] codegen: Generate async ready functions only if needed

[Jürg Billeter <juergbi src gnome org>]

commit 51a2d381d8041b7beb562ced04a72400bc4ff703
Author: Jürg Billeter <j bitron ch>
Date:   Tue Dec 21 21:24:13 2010 +0100

    codegen: Generate async ready functions only if needed

 codegen/valaccodebasemodule.vala       |    4 ++++
 codegen/valaccodemethodcallmodule.vala |    2 +-
 codegen/valagasyncmodule.vala          |   13 ++++++++++---
 codegen/valagdbusclientmodule.vala     |    2 +-
 4 files changed, 16 insertions(+), 5 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index bc7af35..d6592e9 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -5910,6 +5910,10 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
 	public virtual void add_simple_check (CodeNode node, bool always_fails = false) {
 	}
 
+	public virtual string generate_ready_function (Method m) {
+		return "";
+	}
+
 	public CCodeExpression? get_cvalue (Expression expr) {
 		if (expr.target_value == null) {
 			return null;
diff --git a/codegen/valaccodemethodcallmodule.vala b/codegen/valaccodemethodcallmodule.vala
index 0ba0e4e..f1ec0d8 100644
--- a/codegen/valaccodemethodcallmodule.vala
+++ b/codegen/valaccodemethodcallmodule.vala
@@ -580,7 +580,7 @@ public class Vala.CCodeMethodCallModule : CCodeAssignmentModule {
 		if (m != null && m.coroutine) {
 			if (expr.is_yield_expression) {
 				// asynchronous call
-				in_arg_map.set (get_param_pos (-1), new CCodeIdentifier (current_method.get_cname () + "_ready"));
+				in_arg_map.set (get_param_pos (-1), new CCodeIdentifier (generate_ready_function (current_method)));
 				in_arg_map.set (get_param_pos (-0.9), new CCodeIdentifier ("data"));
 			}
 		}
diff --git a/codegen/valagasyncmodule.vala b/codegen/valagasyncmodule.vala
index 816cb38..783cd14 100644
--- a/codegen/valagasyncmodule.vala
+++ b/codegen/valagasyncmodule.vala
@@ -360,7 +360,6 @@ public class Vala.GAsyncModule : GSignalModule {
 				append_function (generate_free_function (m));
 				generate_async_function (m);
 				generate_finish_function (m);
-				append_function (generate_ready_function (m));
 
 				// append the _co function
 				base.visit_method (m);
@@ -483,12 +482,18 @@ public class Vala.GAsyncModule : GSignalModule {
 		pop_context ();
 	}
 
-	CCodeFunction generate_ready_function (Method m) {
+	public override string generate_ready_function (Method m) {
 		// generate ready callback handler
+
 		var dataname = Symbol.lower_case_to_camel_case (m.get_cname ()) + "Data";
 
 		var readyfunc = new CCodeFunction (m.get_cname () + "_ready", "void");
 
+		if (!add_wrapper (readyfunc.name)) {
+			// wrapper already defined
+			return readyfunc.name;
+		}
+
 		readyfunc.add_parameter (new CCodeParameter ("source_object", "GObject*"));
 		readyfunc.add_parameter (new CCodeParameter ("_res_", "GAsyncResult*"));
 		readyfunc.add_parameter (new CCodeParameter ("_user_data_", "gpointer"));
@@ -510,7 +515,9 @@ public class Vala.GAsyncModule : GSignalModule {
 
 		readyfunc.block = readyblock;
 
-		return readyfunc;
+		append_function (readyfunc);
+
+		return readyfunc.name;
 	}
 
 	public override void generate_virtual_method_declaration (Method m, CCodeFile decl_space, CCodeStruct type_struct) {
diff --git a/codegen/valagdbusclientmodule.vala b/codegen/valagdbusclientmodule.vala
index f81320f..e1be9ba 100644
--- a/codegen/valagdbusclientmodule.vala
+++ b/codegen/valagdbusclientmodule.vala
@@ -254,7 +254,7 @@ public class Vala.GDBusClientModule : GDBusModule {
 		if (bus_get_proxy_async || conn_get_proxy_async) {
 			if (expr.is_yield_expression) {
 				// asynchronous call
-				ccall.add_argument (new CCodeIdentifier (current_method.get_cname () + "_ready"));
+				ccall.add_argument (new CCodeIdentifier (generate_ready_function (current_method)));
 				ccall.add_argument (new CCodeIdentifier ("data"));
 			}
 		} else {