[vala] GAsync: Implement the finish function

[Jürg Billeter <juergbi src gnome org>]

commit 37b6eec64dba1bb08bd731d858039c4ca9e030f8
Author: Didier 'Ptitjes <ptitjes free fr>
Date:   Sun May 31 04:37:33 2009 +0200

    GAsync: Implement the finish function
    
    The finish function returns the values stored in the closure as out
    parameters and method return value.
    
    Signed-off-by: Didier 'Ptitjes <ptitjes free fr>

 codegen/valagasyncmodule.vala |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)
---
diff --git a/codegen/valagasyncmodule.vala b/codegen/valagasyncmodule.vala
index f2ab75d..438cbab 100644
--- a/codegen/valagasyncmodule.vala
+++ b/codegen/valagasyncmodule.vala
@@ -220,12 +220,47 @@ internal class Vala.GAsyncModule : GSignalModule {
 
 
 	CCodeFunction generate_finish_function (Method m) {
+		string dataname = Symbol.lower_case_to_camel_case (m.get_cname ()) + "Data";
+
 		var finishfunc = new CCodeFunction (m.get_real_cname () + "_finish");
 
 		var cparam_map = new HashMap<int,CCodeFormalParameter> (direct_hash, direct_equal);
 
 		var finishblock = new CCodeBlock ();
 
+		var return_type = m.return_type;
+		if (!(return_type is VoidType)) {
+			var cdecl = new CCodeDeclaration (m.return_type.get_cname ());
+			cdecl.add_declarator (new CCodeVariableDeclarator ("result"));
+			finishblock.add_statement (cdecl);
+		}
+
+		var datadecl = new CCodeDeclaration (dataname + "*");
+		datadecl.add_declarator (new CCodeVariableDeclarator ("data"));
+		finishblock.add_statement (datadecl);
+
+		var simple_async_result_cast = new CCodeFunctionCall (new CCodeIdentifier ("G_SIMPLE_ASYNC_RESULT"));
+		simple_async_result_cast.add_argument (new CCodeIdentifier ("res"));
+
+		var ccall = new CCodeFunctionCall (new CCodeIdentifier ("g_simple_async_result_get_op_res_gpointer"));
+		ccall.add_argument (simple_async_result_cast);
+		finishblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeIdentifier ("data"), ccall)));
+
+		foreach (FormalParameter param in m.get_parameters ()) {
+			if (param.direction != ParameterDirection.IN) {
+				finishblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeUnaryExpression (CCodeUnaryOperator.POINTER_INDIRECTION, new CCodeIdentifier (param.name)), new CCodeMemberAccess.pointer (new CCodeIdentifier ("data"), get_variable_cname (param.name)))));
+				finishblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeMemberAccess.pointer (new CCodeIdentifier ("data"), get_variable_cname (param.name)), new CCodeConstant ("NULL"))));
+			}
+		}
+
+		if (!(return_type is VoidType)) {
+			finishblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeIdentifier ("result"), new CCodeMemberAccess.pointer (new CCodeIdentifier ("data"), "result"))));
+			if (!(return_type is ValueType) || return_type.nullable) {
+				finishblock.add_statement (new CCodeExpressionStatement (new CCodeAssignment (new CCodeMemberAccess.pointer (new CCodeIdentifier ("data"), "result"), new CCodeConstant ("NULL"))));
+			}
+			finishblock.add_statement (new CCodeReturnStatement (new CCodeIdentifier ("result")));
+		}
+
 		cparam_map.set (get_param_pos (0.1), new CCodeFormalParameter ("res", "GAsyncResult*"));
 
 		generate_cparameters (m, source_declarations, cparam_map, finishfunc, null, null, null, 2);