[vala/wip/transform: 120/179] Drop GVariant stuff from CCodeBaseModule

[Rico Tzschichholz <ricotz src gnome org>]

commit 70bb6c285dceaa234cc5b62c7ccae9c0266d89bc
Author: Luca Bruno <lucabru src gnome org>
Date:   Thu Jan 5 13:14:58 2012 +0100

    Drop GVariant stuff from CCodeBaseModule

 codegen/valaccodebasemodule.vala |  135 +------------------------------------
 1 files changed, 4 insertions(+), 131 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 2ffa61c..1a449c5 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -312,7 +312,6 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
        public DataType gdestroynotify_type;
        public DataType gquark_type;
        public Struct gvalue_type;
-       public Class gvariant_type;
        public Struct mutex_type;
        public Struct gmutex_type;
        public Struct grecmutex_type;
@@ -473,7 +472,6 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
 
                gquark_type = new IntegerType ((Struct) glib_ns.scope.lookup ("Quark"));
                gvalue_type = (Struct) glib_ns.scope.lookup ("Value");
-               gvariant_type = (Class) glib_ns.scope.lookup ("Variant");
                gsource_type = (Class) glib_ns.scope.lookup ("Source");
 
                gmutex_type = (Struct) glib_ns.scope.lookup ("Mutex");
@@ -5115,82 +5113,6 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                return rv;
        }
 
-       int next_variant_function_id = 0;
-
-       public TargetValue? try_cast_variant_to_type (TargetValue value, DataType to, CodeNode? node = null) {
-               if (value.value_type == null || gvariant_type == null || value.value_type.data_type != 
gvariant_type) {
-                       return null;
-               }
-
-               string variant_func = "_variant_get%d".printf (++next_variant_function_id);
-
-               var variant = value;
-               if (value.value_type.value_owned) {
-                       // value leaked, destroy it
-                       var temp_value = store_temp_value (value, node);
-                       temp_ref_values.insert (0, ((GLibValue) temp_value).copy ());
-                       variant = temp_value;
-               }
-
-               var ccall = new CCodeFunctionCall (new CCodeIdentifier (variant_func));
-               ccall.add_argument (get_cvalue_ (variant));
-
-               var result = create_temp_value (to, false, node);
-
-               var cfunc = new CCodeFunction (variant_func);
-               cfunc.modifiers = CCodeModifiers.STATIC;
-               cfunc.add_parameter (new CCodeParameter ("value", "GVariant*"));
-
-               if (!to.is_real_non_null_struct_type ()) {
-                       cfunc.return_type = get_ccode_name (to);
-               }
-
-               if (to.is_real_non_null_struct_type ()) {
-                       // structs are returned via out parameter
-                       cfunc.add_parameter (new CCodeParameter ("result", "%s *".printf (get_ccode_name 
(to))));
-                       ccall.add_argument (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, 
get_cvalue_ (result)));
-               } else if (to is ArrayType) {
-                       // return array length if appropriate
-                       // tmp = _variant_get (variant, &tmp_length);
-                       var array_type = (ArrayType) to;
-
-                       for (int dim = 1; dim <= array_type.rank; dim++) {
-                               ccall.add_argument (new CCodeUnaryExpression (CCodeUnaryOperator.ADDRESS_OF, 
get_array_length_cvalue (result, dim)));
-                               cfunc.add_parameter (new CCodeParameter (get_array_length_cname ("result", 
dim), "int*"));
-                       }
-               }
-
-               if (!to.is_real_non_null_struct_type ()) {
-                       ccode.add_assignment (get_cvalue_ (result), ccall);
-               } else {
-                       ccode.add_expression (ccall);
-               }
-
-               push_function (cfunc);
-
-               CCodeExpression func_result = deserialize_expression (to, new CCodeIdentifier ("value"), new 
CCodeIdentifier ("*result"));
-               if (to.is_real_non_null_struct_type ()) {
-                       ccode.add_assignment (new CCodeIdentifier ("*result"), func_result);
-               } else {
-                       ccode.add_return (func_result);
-               }
-
-               pop_function ();
-
-               cfile.add_function_declaration (cfunc);
-               cfile.add_function (cfunc);
-
-               return load_temp_value (result);
-       }
-
-       public virtual CCodeExpression? deserialize_expression (DataType type, CCodeExpression variant_expr, 
CCodeExpression? expr, CCodeExpression? error_expr = null, out bool may_fail = null) {
-               assert_not_reached ();
-       }
-
-       public virtual CCodeExpression? serialize_expression (DataType type, CCodeExpression expr) {
-               assert_not_reached ();
-       }
-
        public override void visit_cast_expression (CastExpression expr) {
                generate_type_declaration (expr.type_reference, cfile);
 
@@ -5200,14 +5122,10 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                                set_cvalue (expr, valuecast);
                                return;
                        }
-
-                       var variantcast = try_cast_variant_to_type (expr.inner.target_value, 
expr.type_reference, expr);
-                       if (variantcast != null) {
-                               expr.target_value = variantcast;
-                               return;
-                       }
                }
 
+               generate_type_declaration (expr.type_reference, cfile);
+
                var cl = expr.type_reference.data_type as Class;
                var iface = expr.type_reference.data_type as Interface;
                if (iface != null || (cl != null && !cl.is_compact)) {
@@ -5753,13 +5671,9 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                                      && target_type.data_type == gvalue_type
                                      && !(type is NullType)
                                      && get_ccode_type_id (type) != "G_TYPE_VALUE");
-               bool gvariant_boxing = (target_type != null
-                                       && target_type.data_type == gvariant_type
-                                       && !(type is NullType)
-                                       && type.data_type != gvariant_type);
 
                if (type.value_owned
-                   && (target_type == null || !target_type.value_owned || boxing || unboxing || 
gvariant_boxing)
+                   && (target_type == null || !target_type.value_owned || boxing || unboxing)
                    && !gvalue_boxing /* gvalue can assume ownership of value, no need to free it */) {
                        // value leaked, destroy it
                        if (target_type is PointerType) {
@@ -5833,47 +5747,6 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                        ccode.add_expression (ccall);
 
                        result = (GLibValue) temp_value;
-               } else if (gvariant_boxing) {
-                       // implicit conversion to GVariant
-                       string variant_func = "_variant_new%d".printf (++next_variant_function_id);
-
-                       var ccall = new CCodeFunctionCall (new CCodeIdentifier (variant_func));
-                       ccall.add_argument (result.cvalue);
-
-                       var cfunc = new CCodeFunction (variant_func, "GVariant*");
-                       cfunc.modifiers = CCodeModifiers.STATIC;
-                       cfunc.add_parameter (new CCodeParameter ("value", get_ccode_name (type)));
-
-                       if (type is ArrayType) {
-                               // return array length if appropriate
-                               var array_type = (ArrayType) type;
-
-                               for (int dim = 1; dim <= array_type.rank; dim++) {
-                                       ccall.add_argument (get_array_length_cvalue (value, dim));
-                                       cfunc.add_parameter (new CCodeParameter (get_array_length_cname 
("value", dim), "gint"));
-                               }
-                       }
-
-                       push_function (cfunc);
-
-                       // sink floating reference
-                       var sink = new CCodeFunctionCall (new CCodeIdentifier ("g_variant_ref_sink"));
-                       sink.add_argument (serialize_expression (type, new CCodeIdentifier ("value")));
-                       ccode.add_return (sink);
-
-                       pop_function ();
-
-                       cfile.add_function_declaration (cfunc);
-                       cfile.add_function (cfunc);
-
-                       result.cvalue = ccall;
-                       result.value_type.value_owned = true;
-
-                       result = (GLibValue) store_temp_value (result, node);
-                       if (!target_type.value_owned) {
-                               // value leaked
-                               temp_ref_values.insert (0, ((GLibValue) result).copy ());
-                       }
                } else if (boxing) {
                        // value needs to be boxed
 
@@ -5905,7 +5778,7 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                        }
                }
 
-               if (!gvalue_boxing && !gvariant_boxing && target_type.value_owned && (!type.value_owned || 
boxing || unboxing || array_needs_copy) && requires_copy (target_type) && !(type is NullType)) {
+               if (!gvalue_boxing && target_type.value_owned && (!type.value_owned || boxing || unboxing || 
array_needs_copy) && requires_copy (target_type) && !(type is NullType)) {
                        // need to copy value
                        var copy = (GLibValue) copy_value (result, node);
                        if (target_type.data_type is Interface && copy == null) {