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[vala/wip/attributes: 34/39] codegen: Add CCodeAttribute

commit d5ca5ae499b71168df8c98efc48353d5f7d5dfcd
Author: Luca Bruno <lucabru src gnome org>
Date:   Sun Jul 31 19:36:53 2011 +0200

    codegen: Add CCodeAttribute

 codegen/Makefile.am             |    1 +
 codegen/valaccodeattribute.vala | 1174 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 1175 insertions(+), 0 deletions(-)
---
diff --git a/codegen/Makefile.am b/codegen/Makefile.am
index c2dafce..1472c9e 100644
--- a/codegen/Makefile.am
+++ b/codegen/Makefile.am
@@ -17,6 +17,7 @@ lib_LTLIBRARIES = \
 libvala_la_VALASOURCES = \
 	valaccodearraymodule.vala \
 	valaccodeassignmentmodule.vala \
+	valaccodeattribute.vala \
 	valaccodebasemodule.vala \
 	valaccodecompiler.vala \
 	valaccodecontrolflowmodule.vala \
diff --git a/codegen/valaccodeattribute.vala b/codegen/valaccodeattribute.vala
new file mode 100644
index 0000000..d8a3dd7
--- /dev/null
+++ b/codegen/valaccodeattribute.vala
@@ -0,0 +1,1174 @@
+/* valaccodeattribute.vala
+ *
+ * Copyright (C) 2011  Luca Bruno
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+ *
+ * Author:
+ * 	Luca Bruno <lucabru src gnome org>
+ */
+
+
+/**
+ * Cache for the CCode attribute
+ */
+public class Vala.CCodeAttribute : AttributeCache {
+	private weak CodeNode node;
+	private weak Symbol sym;
+	private Attribute ccode;
+
+	public string name {
+		get {
+			if (_name == null) {
+				if (ccode != null) {
+					_name = ccode.get_string ("cname");
+				}
+				if (_name == null) {
+					_name = get_default_name ();
+				}
+			}
+			return _name;
+		}
+	}
+
+	public string const_name {
+		get {
+			if (_const_name == null) {
+				if (ccode != null) {
+					_const_name = ccode.get_string ("const_cname");
+				}
+				if (_const_name == null) {
+					_const_name = get_default_const_name ();
+				}
+			}
+			return _const_name;
+		}
+	}
+
+	public string type_name {
+		get {
+			if (_type_name == null) {
+				if (ccode != null) {
+					_type_name = ccode.get_string ("type_cname");
+				}
+				if (_type_name == null) {
+					_type_name = "%sIface".printf (CCodeBaseModule.get_ccode_name (sym));
+				}
+			}
+			return _type_name;
+		}
+	}
+
+	public string header_filenames {
+		get {
+			if (_header_filenames == null) {
+				if (ccode != null) {
+					_header_filenames = ccode.get_string ("cheader_filename");
+				}
+				if (_header_filenames == null) {
+					_header_filenames = get_default_header_filenames ();
+				}
+			}
+			return _header_filenames;
+		}
+	}
+
+	public string prefix {
+		get {
+			if (_prefix == null) {
+				if (ccode != null) {
+					_prefix = ccode.get_string ("cprefix");
+				}
+				if (_prefix == null) {
+					_prefix = get_default_prefix ();
+				}
+			}
+			return _prefix;
+		}
+	}
+
+	public string lower_case_prefix {
+		get {
+			if (_lower_case_prefix == null) {
+				if (ccode != null) {
+					_lower_case_prefix = ccode.get_string ("lower_case_cprefix");
+					if (_lower_case_prefix == null && (sym is ObjectTypeSymbol || sym is Struct)) {
+						_lower_case_prefix = ccode.get_string ("cprefix");
+					}
+				}
+				if (_lower_case_prefix == null) {
+					_lower_case_prefix = get_default_lower_case_prefix ();
+				}
+			}
+			return _lower_case_prefix;
+		}
+	}
+
+	public string lower_case_suffix {
+		get {
+			if (_lower_case_suffix == null) {
+				if (ccode != null) {
+					_lower_case_suffix = ccode.get_string ("lower_case_csuffix");
+				}
+				if (_lower_case_suffix == null) {
+					_lower_case_suffix = get_default_lower_case_suffix ();
+				}
+			}
+			return _lower_case_suffix;
+		}
+	}
+
+	public string ref_function {
+		get {
+			if (!ref_function_set) {
+				if (ccode != null) {
+					_ref_function = ccode.get_string ("ref_function");
+				}
+				if (_ref_function == null) {
+					_ref_function = get_default_ref_function ();
+				}
+				ref_function_set = true;
+			}
+			return _ref_function;
+		}
+	}
+
+	public bool ref_function_void {
+		get {
+			if (_ref_function_void == null) {
+				if (ccode != null && ccode.has_argument ("ref_function_void")) {
+					_ref_function_void = ccode.get_bool ("ref_function_void");
+				} else {
+					var cl = (Class) sym;
+					if (cl.base_class != null) {
+						_ref_function_void = CCodeBaseModule.get_ccode_ref_function_void (cl.base_class);
+					} else {
+						_ref_function_void = false;
+					}
+				}
+			}
+			return _ref_function_void;
+		}
+	}
+
+	public string unref_function {
+		get {
+			if (!unref_function_set) {
+				if (ccode != null) {
+					_unref_function = ccode.get_string ("unref_function");
+				}
+				if (_unref_function == null) {
+					_unref_function = get_default_unref_function ();
+				}
+				unref_function_set = true;
+			}
+			return _unref_function;
+		}
+	}
+
+	public string ref_sink_function {
+		get {
+			if (_ref_sink_function == null) {
+				if (ccode != null) {
+					_ref_sink_function = ccode.get_string ("ref_sink_function");
+				}
+				if (_ref_sink_function == null) {
+					_ref_sink_function = get_default_ref_sink_function ();
+				}
+			}
+			return _ref_sink_function;
+		}
+	}
+
+	public string copy_function {
+		get {
+			if (!copy_function_set) {
+				if (ccode != null) {
+					_copy_function = ccode.get_string ("copy_function");
+				}
+				if (_copy_function == null && sym is Struct) {
+					_copy_function = lower_case_prefix + "copy";
+				}
+				copy_function_set = true;
+			}
+			return _copy_function;
+		}
+	}
+
+	public string destroy_function {
+		get {
+			if (!destroy_function_set) {
+				if (ccode != null) {
+					_destroy_function = ccode.get_string ("destroy_function");
+				}
+				if (_destroy_function == null && sym is Struct) {
+					_destroy_function = lower_case_prefix + "destroy";
+				}
+				destroy_function_set = true;
+			}
+			return _destroy_function;
+		}
+	}
+
+	public string free_function {
+		get {
+			if (!free_function_set) {
+				if (ccode != null) {
+					_free_function = ccode.get_string ("free_function");
+				}
+				if (_free_function == null) {
+					_free_function = get_default_free_function ();
+				}
+				free_function_set = true;
+			}
+			return _free_function;
+		}
+	}
+
+	public string type_id {
+		get {
+			if (_type_id == null) {
+				if (ccode != null) {
+					_type_id = ccode.get_string ("type_id");
+				}
+				if (_type_id == null) {
+					_type_id = get_default_type_id ();
+				}
+			}
+			return _type_id;
+		}
+	}
+
+	public string marshaller_type_name {
+		get {
+			if (_marshaller_type_name == null) {
+				if (ccode != null) {
+					_marshaller_type_name = ccode.get_string ("marshaller_type_name");
+				}
+				if (_marshaller_type_name == null) {
+					_marshaller_type_name = get_default_marshaller_type_name ();
+				}
+			}
+			return _marshaller_type_name;
+		}
+	}
+
+	public string get_value_function {
+		get {
+			if (_get_value_function == null) {
+				if (ccode != null) {
+					_get_value_function = ccode.get_string ("get_value_function");
+				}
+				if (_get_value_function == null) {
+					_get_value_function = get_default_get_value_function ();
+				}
+			}
+			return _get_value_function;
+		}
+	}
+
+	public string set_value_function {
+		get {
+			if (_set_value_function == null) {
+				if (ccode != null) {
+					_set_value_function = ccode.get_string ("set_value_function");
+				}
+				if (_set_value_function == null) {
+					_set_value_function = get_default_set_value_function ();
+				}
+			}
+			return _set_value_function;
+		}
+	}
+
+	public string take_value_function {
+		get {
+			if (_take_value_function == null) {
+				if (ccode != null) {
+					_take_value_function = ccode.get_string ("take_value_function");
+				}
+				if (_take_value_function == null) {
+					_take_value_function = get_default_take_value_function ();
+				}
+			}
+			return _take_value_function;
+		}
+	}
+
+	public string param_spec_function {
+		get {
+			if (_param_spec_function == null) {
+				if (ccode != null) {
+					_param_spec_function = ccode.get_string ("param_spec_function");
+				}
+				if (_param_spec_function == null) {
+					_param_spec_function = get_default_param_spec_function ();
+				}
+			}
+			return _param_spec_function;
+		}
+	}
+
+	public string default_value {
+		get {
+			if (_default_value == null) {
+				if (ccode != null) {
+					_default_value = ccode.get_string ("default_value");
+				}
+				if (_default_value == null) {
+					_default_value = get_default_default_value ();
+				}
+			}
+			return _default_value;
+		}
+	}
+
+	public double pos {
+		get {
+			if (_pos == null) {
+				if (ccode != null && ccode.has_argument ("pos")) {
+					_pos = ccode.get_double ("pos");
+				} else {
+					var param = (Parameter) node;
+					var sym = param.parent_symbol;
+					if (sym is Method) {
+						_pos = ((Method) sym).get_parameters().index_of (param) + 1.0;
+					} else if (sym is Delegate) {
+						_pos = ((Delegate) sym).get_parameters().index_of (param) + 1.0;
+					} else if (sym is Signal) {
+						_pos = ((Signal) sym).get_parameters().index_of (param) + 1.0;
+					} else {
+						_pos = 0.0;
+					}
+				}
+			}
+			return _pos;
+		}
+	}
+
+	public string real_name {
+		get {
+			if (_real_name == null) {
+				if (ccode != null && sym is CreationMethod) {
+					_real_name = ccode.get_string ("construct_function");
+				}
+				if (_real_name == null) {
+					_real_name = get_default_real_name ();
+				}
+			}
+			return _real_name;
+		}
+	}
+
+	public string vfunc_name {
+		get {
+			if (_vfunc_name == null) {
+				if (ccode != null) {
+					_vfunc_name = ccode.get_string ("vfunc_name");
+				}
+				if (_vfunc_name == null) {
+					_vfunc_name = sym.name;
+				}
+			}
+			return _vfunc_name;
+		}
+	}
+
+	public string finish_name {
+		get {
+			if (_finish_name == null) {
+				if (ccode != null) {
+					_finish_name = ccode.get_string ("finish_name");
+				}
+				if (_finish_name == null) {
+					_finish_name = get_finish_name_for_basename (name);
+				}
+			}
+			return _finish_name;
+		}
+	}
+
+	public string finish_vfunc_name {
+		get {
+			if (_finish_vfunc_name == null) {
+				_finish_vfunc_name = get_finish_name_for_basename (vfunc_name);
+			}
+			return _finish_vfunc_name;
+		}
+	}
+
+	public string finish_real_name {
+		get {
+			if (_finish_real_name == null) {
+				_finish_real_name = get_finish_name_for_basename (real_name);
+			}
+			return _finish_real_name;
+		}
+	}
+
+	public bool array_length { get; private set; }
+	public string? array_length_type { get; private set; }
+	public bool array_null_terminated { get; private set; }
+	public string? array_length_name { get; private set; }
+	public string? array_length_expr { get; private set; }
+	public bool delegate_target { get; private set; }
+	public string sentinel { get; private set; }
+
+	private string _name;
+	private string _const_name;
+	private string _type_name;
+	private string _header_filenames;
+	private string _prefix;
+	private string _lower_case_prefix;
+	private string _lower_case_suffix;
+	private string? _ref_function;
+	private bool ref_function_set;
+	private bool? _ref_function_void;
+	private string? _unref_function;
+	private bool unref_function_set;
+	private string _ref_sink_function;
+	private string? _copy_function;
+	private bool copy_function_set;
+	private string? _destroy_function;
+	private bool destroy_function_set;
+	private string? _free_function;
+	private bool free_function_set;
+	private string _type_id;
+	private string _marshaller_type_name;
+	private string _get_value_function;
+	private string _set_value_function;
+	private string _take_value_function;
+	private string _param_spec_function;
+	private string _default_value;
+	private double? _pos;
+	private string _vfunc_name;
+	private string _finish_name;
+	private string _finish_vfunc_name;
+	private string _finish_real_name;
+	private string _real_name;
+
+	private static int dynamic_method_id;
+
+	public CCodeAttribute (CodeNode node) {
+		this.node = node;
+		this.sym = node as Symbol;
+
+		array_length = true;
+		delegate_target = true;
+		ccode = node.get_attribute ("CCode");
+		if (ccode != null) {
+			array_length = ccode.get_bool ("array_length", true);
+			array_length_type = ccode.get_string ("array_length_type");
+			array_null_terminated = ccode.get_bool ("array_null_terminated");
+			array_length_name = ccode.get_string ("array_length_cname");
+			array_length_expr = ccode.get_string ("array_length_cexpr");
+			if (ccode.has_argument ("pos")) {
+				_pos = ccode.get_double ("pos");
+			}
+			delegate_target = ccode.get_bool ("delegate_target", true);
+			sentinel = ccode.get_string ("sentinel");
+		}
+		if (node.get_attribute ("NoArrayLength") != null) {
+			// deprecated
+			array_length = false;
+		}
+		if (sentinel == null) {
+			sentinel = "NULL";
+		}
+	}
+
+	private string get_default_name () {
+		var sym = node as Symbol;
+		if (sym != null) {
+			if (sym is Constant && !(sym is EnumValue)) {
+				return "%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (sym.parent_symbol).up (), sym.name);
+			} else if (sym is Field) {
+				if (((Field) sym).binding == MemberBinding.STATIC) {
+					return "%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (sym.parent_symbol), sym.name);
+				} else {
+					return sym.name;
+				}
+			} else if (sym is CreationMethod) {
+				var m = (CreationMethod) sym;
+				string infix;
+				if (m.parent_symbol is Struct) {
+					infix = "init";
+				} else {
+					infix = "new";
+				}
+				if (m.name == ".new") {
+					return "%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (m.parent_symbol), infix);
+				} else {
+					return "%s%s_%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (m.parent_symbol), infix, m.name);
+				}
+			} else if (sym is DynamicMethod) {
+				return "_dynamic_%s%d".printf (sym.name, dynamic_method_id++);
+			} else if (sym is Method) {
+				var m = (Method) sym;
+				if (m.is_async_callback) {
+					return "%s_co".printf (CCodeBaseModule.get_ccode_real_name ((Method) m.parent_symbol));
+				}
+				if (sym.name == "main" && sym.parent_symbol.name == null) {
+					// avoid conflict with generated main function
+					return "_vala_main";
+				} else if (sym.name.has_prefix ("_")) {
+					return "_%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (sym.parent_symbol), sym.name.substring (1));
+				} else {
+					return "%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (sym.parent_symbol), sym.name);
+				}
+			} else if (sym is PropertyAccessor) {
+				var acc = (PropertyAccessor) sym;
+				var t = (TypeSymbol) acc.prop.parent_symbol;
+
+				if (acc.readable) {
+					return "%sget_%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (t), acc.prop.name);
+				} else {
+					return "%sset_%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (t), acc.prop.name);
+				}
+			} else if (sym is Signal) {
+				return Symbol.camel_case_to_lower_case (sym.name);
+			} else if (sym is Struct && !sym.external) {
+				var st = (Struct) sym;
+				if (st.is_boolean_type ()) {
+					// typedef for boolean types
+					return "bool";
+				} else if (st.is_integer_type ()) {
+					// typedef for integral types
+					return "%sint%d_t".printf (st.signed ? "" : "u", st.width);
+				} else if (st.is_floating_type ()) {
+					// typedef for floating types
+					return st.width == 64 ? "double" : "float";
+				} else {
+					return "%s%s".printf (CCodeBaseModule.get_ccode_prefix (sym.parent_symbol), sym.name);
+				}
+			} else {
+				return "%s%s".printf (CCodeBaseModule.get_ccode_prefix (sym.parent_symbol), sym.name);
+			}
+		} else if (node is ObjectType) {
+			var type = (ObjectType) node;
+			if (CodeContext.get ().profile == Profile.DOVA) {
+				if (type.type_symbol.get_full_name () == "string") {
+					return "string_t";
+				}
+			}
+
+			string cname;
+			if (!type.value_owned) {
+				cname = CCodeBaseModule.get_ccode_const_name (type.type_symbol);
+			} else {
+				cname = CCodeBaseModule.get_ccode_name (type.type_symbol);
+			}
+			return "%s*".printf (cname);
+		} else if (node is ArrayType) {
+			var type = (ArrayType) node;
+			var cname = CCodeBaseModule.get_ccode_name (type.element_type);
+			if (type.inline_allocated) {
+				return cname;
+			} else {
+				if (CodeContext.get ().profile == Profile.DOVA) {
+					return "DovaArray";
+				} else {
+					return "%s*".printf (cname);
+				}
+			}
+		} else if (node is DelegateType) {
+			var type = (DelegateType) node;
+			if (CodeContext.get ().profile == Profile.DOVA) {
+				return "%s*".printf (CCodeBaseModule.get_ccode_name (type.delegate_symbol));
+			} else {
+				return CCodeBaseModule.get_ccode_name (type.delegate_symbol);
+			}
+		} else if (node is ErrorType) {
+			return "GError*";
+		} else if (node is GenericType) {
+			var type = (GenericType) node;
+			if (type.value_owned) {
+				return "gpointer";
+			} else {
+				return "gconstpointer";
+			}
+		} else if (node is MethodType) {
+			return "gpointer";
+		} else if (node is NullType) {
+			if (CodeContext.get ().profile == Profile.GOBJECT) {
+				return "gpointer";
+			} else {
+				return "void *";
+			}
+		} else if (node is PointerType) {
+			var type = (PointerType) node;
+			if (type.base_type.data_type != null && type.base_type.data_type.is_reference_type ()) {
+				return CCodeBaseModule.get_ccode_name (type.base_type);
+			} else {
+				return "%s*".printf (CCodeBaseModule.get_ccode_name (type.base_type));
+			}
+		} else if (node is VoidType) {
+			return "void";
+		} else if (node is ClassType) {
+			var type = (ClassType) node;
+			return "%sClass*".printf (CCodeBaseModule.get_ccode_name (type.class_symbol));
+		} else if (node is InterfaceType) {
+			var type = (InterfaceType) node;
+			return "%s*".printf (CCodeBaseModule.get_ccode_type_name (type.interface_symbol));
+		} else if (node is ValueType) {
+			var type = (ValueType) node;
+			var cname = CCodeBaseModule.get_ccode_name (type.type_symbol);
+			if (type.nullable) {
+				return "%s*".printf (cname);
+			} else {
+				return cname;
+			}
+		} else if (node is CType) {
+			return ((CType) node).ctype_name;
+		} else {
+			Report.error (node.source_reference, "Unresolved type reference");
+			return "";
+		}
+	}
+
+	private string get_default_header_filenames () {
+		if (sym is DynamicProperty || sym is DynamicMethod) {
+			return "";
+		} else if (sym.parent_symbol != null) {
+			return CCodeBaseModule.get_ccode_header_filenames (sym.parent_symbol);
+		} else if (sym.source_reference != null && !sym.external_package) {
+			// don't add default include directives for VAPI files
+			return sym.source_reference.file.get_cinclude_filename ();
+		}
+		return "";
+	}
+
+	private string get_default_prefix () {
+		if (sym is ObjectTypeSymbol) {
+			return name;
+		} else if (sym is Enum || sym is ErrorDomain) {
+			return "%s_".printf (CCodeBaseModule.get_ccode_upper_case_name (sym));
+		} else if (sym is Namespace) {
+			if (sym.name != null) {
+				var parent_prefix = "";
+				if (sym.parent_symbol != null) {
+					parent_prefix = CCodeBaseModule.get_ccode_prefix (sym.parent_symbol);
+				}
+				return "%s%s".printf (parent_prefix, sym.name);
+			} else {
+				return "";
+			}
+		} else if (sym.name != null) {
+			return sym.name;
+		}
+		return "";
+	}
+
+	private string get_default_lower_case_prefix () {
+		if (sym is Namespace) {
+			if (sym.name == null) {
+				return "";
+			} else {
+				return "%s%s_".printf (CCodeBaseModule.get_ccode_lower_case_prefix (sym.parent_symbol), Symbol.camel_case_to_lower_case (sym.name));
+			}
+		} else if (sym is Method) {
+			// for lambda expressions
+			return "";
+		} else {
+			return "%s_".printf (CCodeBaseModule.get_ccode_lower_case_name (sym));
+		}
+	}
+
+	private string get_default_lower_case_suffix () {
+		if (sym is ObjectTypeSymbol) {
+			var csuffix = Symbol.camel_case_to_lower_case (sym.name);
+
+			// remove underscores in some cases to avoid conflicts of type macros
+			if (csuffix.has_prefix ("type_")) {
+				csuffix = "type" + csuffix.substring ("type_".length);
+			} else if (csuffix.has_prefix ("is_")) {
+				csuffix = "is" + csuffix.substring ("is_".length);
+			}
+			if (csuffix.has_suffix ("_class")) {
+				csuffix = csuffix.substring (0, csuffix.length - "_class".length) + "class";
+			}
+			return csuffix;
+		} else if (sym.name != null) {
+			return Symbol.camel_case_to_lower_case (sym.name);
+		}
+		return "";
+	}
+
+	private string? get_default_ref_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return lower_case_prefix + "ref";
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_ref_function (cl.base_class);
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				var ref_func = CCodeBaseModule.get_ccode_ref_function ((ObjectTypeSymbol) prereq.data_type);
+				if (ref_func != null) {
+					return ref_func;
+				}
+			}
+		}
+		return null;
+	}
+
+	private string? get_default_unref_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return lower_case_prefix + "unref";
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_unref_function (cl.base_class);
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				string unref_func = CCodeBaseModule.get_ccode_unref_function ((ObjectTypeSymbol) prereq.data_type);
+				if (unref_func != null) {
+					return unref_func;
+				}
+			}
+		}
+		return null;
+	}
+
+	private string get_default_ref_sink_function () {
+		if (sym is Class) {
+			return CCodeBaseModule.get_ccode_ref_sink_function (((Class) sym).base_class);
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				string ref_sink_func = CCodeBaseModule.get_ccode_ref_sink_function ((ObjectTypeSymbol) prereq.data_type);
+				if (ref_sink_func != "") {
+					return ref_sink_func;
+				}
+			}
+		}
+		return "";
+	}
+
+	private string? get_default_free_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_free_function (cl.base_class);
+			}
+			return lower_case_prefix + "free";
+		} else if (sym is Struct) {
+			if (!sym.external_package) {
+				return lower_case_prefix + "free";
+			}
+		}
+		return null;
+	}
+
+	private string get_default_type_id () {
+		if (sym != null) {
+			if (sym is Class && !((Class) sym).is_compact || sym is Interface) {
+				return CCodeBaseModule.get_ccode_upper_case_name (sym, "TYPE_");
+			} else if (sym is ErrorType && sym.source_reference != null && sym.source_reference.file.context.require_glib_version (2, 26)) {
+				return "G_TYPE_ERROR";
+			} else if (sym is Struct) {
+				var st = (Struct) sym;
+				if (!CCodeBaseModule.get_ccode_has_type_id (st)) {
+					var base_struct = st.base_struct;
+					if (base_struct != null) {
+						return CCodeBaseModule.get_ccode_type_id (base_struct);
+					}
+					if (!st.is_simple_type ()) {
+						return "G_TYPE_POINTER";
+					}
+				} else {
+					return CCodeBaseModule.get_ccode_upper_case_name (st, "TYPE_");
+				}
+			} else if (sym is Enum) {
+				var en = (Enum) sym;
+				if (CCodeBaseModule.get_ccode_has_type_id (en)) {
+					return CCodeBaseModule.get_ccode_upper_case_name (en, "TYPE_");
+				} else {
+					return en.is_flags ? "G_TYPE_UINT" : "G_TYPE_INT";
+				}
+			} else {
+				return "G_TYPE_POINTER";
+			}
+		} else if (node is ArrayType && ((ArrayType) node).element_type.data_type.get_full_name () == "string") {
+			return "G_TYPE_STRV";
+		} else if (node is PointerType || node is DelegateType) {
+			return "G_TYPE_POINTER";
+		} else if (node is ErrorType) {
+			if (node.source_reference != null && node.source_reference.file.context.require_glib_version (2, 26)) {
+				return "G_TYPE_ERROR";
+			} else {
+				return "G_TYPE_POINTER";
+			}
+		} else if (node is VoidType) {
+			return "G_TYPE_NONE";
+		} else {
+			var type = (DataType) node;
+			if (type.data_type != null) {
+				return CCodeBaseModule.get_ccode_type_id (type.data_type);
+			}
+		}
+		return "";
+	}
+
+	private string get_default_marshaller_type_name () {
+		if (sym != null) {
+			if (sym is Class) {
+				var cl = (Class) sym;
+				if (cl.base_class != null) {
+					return CCodeBaseModule.get_ccode_marshaller_type_name (cl.base_class);
+				} else if (!cl.is_compact) {
+					return CCodeBaseModule.get_ccode_upper_case_name (cl);
+				} else if (type_id == "G_TYPE_POINTER") {
+					return "POINTER";
+				} else {
+					return "BOXED";
+				}
+			} else if (sym is Enum) {
+				var en = (Enum) sym;
+				if (CCodeBaseModule.get_ccode_has_type_id (en)) {
+					if (en.is_flags) {
+						return "FLAGS";
+					} else {
+						return "ENUM";
+					}
+				} else {
+					if (en.is_flags) {
+						return "UINT";
+					} else {
+						return "INT";
+					}
+				}
+			} else if (sym is Interface) {
+				foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+					var type_name = CCodeBaseModule.get_ccode_marshaller_type_name (prereq.data_type);
+					if (type_name != "") {
+						return type_name;
+					}
+				}
+				return "POINTER";
+			} else if (sym is Struct) {
+				var st = (Struct) sym;
+				var base_st = st.base_struct;
+				if (base_st != null) {
+					return CCodeBaseModule.get_ccode_marshaller_type_name (base_st);
+				}
+				if (st.is_simple_type ()) {
+					Report.error (st.source_reference, "The type `%s` doesn't declare a marshaller type name".printf (st.get_full_name ()));
+				} else if (CCodeBaseModule.get_ccode_has_type_id (st)) {
+					return "BOXED";
+				} else {
+					return "POINTER";
+				}
+			} else if (sym is Parameter) {
+				var param = (Parameter) sym;
+				if (param.direction != ParameterDirection.IN) {
+					return "POINTER";
+				} else {
+					return CCodeBaseModule.get_ccode_marshaller_type_name (param.variable_type);
+				}
+			} else {
+				return "POINTER";
+			}
+		} else if (node is PointerType || ((DataType) node).type_parameter != null) {
+			return "POINTER";
+		} else if (node is ErrorType) {
+			return "POINTER";
+		} else if (node is ArrayType) {
+			if (((ArrayType) node).element_type.data_type.get_full_name () == "string") {
+				return "BOXED,INT";
+			} else {
+				return "POINTER,INT";
+			}
+		} else if (node is VoidType) {
+			return "VOID";
+		} else {
+			return CCodeBaseModule.get_ccode_marshaller_type_name (((DataType) node).data_type);
+		}
+		return "";
+	}
+
+	private string get_default_get_value_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return CCodeBaseModule.get_ccode_lower_case_name (cl, "value_get_");
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_get_value_function (cl.base_class);
+			} else if (type_id == "G_TYPE_POINTER") {
+				return "g_value_get_pointer";
+			} else {
+				return "g_value_get_boxed";
+			}
+		} else if (sym is Enum) {
+			var en = (Enum) sym;
+			if (CCodeBaseModule.get_ccode_has_type_id (en)) {
+				if (en.is_flags) {
+					return "g_value_get_flags";
+				} else {
+					return "g_value_get_enum";
+				}
+			} else {
+				if (en.is_flags) {
+					return "g_value_get_uint";
+				} else {
+					return "g_value_get_int";
+				}
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				var type_name = CCodeBaseModule.get_ccode_get_value_function (prereq.data_type);
+				if (type_name != "") {
+					return type_name;
+				}
+			}
+			return "g_value_get_pointer";
+		} else if (sym is Struct) {
+			var st = (Struct) sym;
+			var base_st = st.base_struct;
+			if (base_st != null) {
+				return CCodeBaseModule.get_ccode_get_value_function (base_st);
+			}
+			if (st.is_simple_type ()) {
+				Report.error (st.source_reference, "The type `%s` doesn't declare a GValue get function".printf (st.get_full_name ()));
+			} else if (CCodeBaseModule.get_ccode_has_type_id (st)) {
+				return "g_value_get_boxed";
+			} else {
+				return "g_value_get_pointer";
+			}
+		} else {
+			return "g_value_get_pointer";
+		}
+		return "";
+	}
+
+	private string get_default_set_value_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return CCodeBaseModule.get_ccode_lower_case_name (cl, "value_set_");
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_set_value_function (cl.base_class);
+			} else if (type_id == "G_TYPE_POINTER") {
+				return "g_value_set_pointer";
+			} else {
+				return "g_value_set_boxed";
+			}
+		} else if (sym is Enum) {
+			var en = (Enum) sym;
+			if (CCodeBaseModule.get_ccode_has_type_id (en)) {
+				if (en.is_flags) {
+					return "g_value_set_flags";
+				} else {
+					return "g_value_set_enum";
+				}
+			} else {
+				if (en.is_flags) {
+					return "g_value_set_uint";
+				} else {
+					return "g_value_set_int";
+				}
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				var type_name = CCodeBaseModule.get_ccode_set_value_function (prereq.data_type);
+				if (type_name != "") {
+					return type_name;
+				}
+			}
+			return "g_value_set_pointer";
+		} else if (sym is Struct) {
+			var st = (Struct) sym;
+			var base_st = st.base_struct;
+			if (base_st != null) {
+				return CCodeBaseModule.get_ccode_set_value_function (base_st);
+			}
+			if (st.is_simple_type ()) {
+				Report.error (st.source_reference, "The type `%s` doesn't declare a GValue set function".printf (st.get_full_name ()));
+			} else if (CCodeBaseModule.get_ccode_has_type_id (st)) {
+				return "g_value_set_boxed";
+			} else {
+				return "g_value_set_pointer";
+			}
+		} else {
+			return "g_value_set_pointer";
+		}
+		return "";
+	}
+
+	private string get_default_take_value_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return CCodeBaseModule.get_ccode_lower_case_name (cl, "value_take_");
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_take_value_function (cl.base_class);
+			} else if (type_id == "G_TYPE_POINTER") {
+				return "g_value_set_pointer";
+			} else {
+				return "g_value_take_boxed";
+			}
+		} else if (sym is Enum) {
+			var en = (Enum) sym;
+			if (CCodeBaseModule.get_ccode_has_type_id (en)) {
+				if (en.is_flags) {
+					return "g_value_take_flags";
+				} else {
+					return "g_value_take_enum";
+				}
+			} else {
+				if (en.is_flags) {
+					return "g_value_take_uint";
+				} else {
+					return "g_value_take_int";
+				}
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				var func = CCodeBaseModule.get_ccode_take_value_function (prereq.data_type);
+				if (func != "") {
+					return func;
+				}
+			}
+			return "g_value_set_pointer";
+		} else if (sym is Struct) {
+			var st = (Struct) sym;
+			var base_st = st.base_struct;
+			if (base_st != null) {
+				return CCodeBaseModule.get_ccode_take_value_function (base_st);
+			}
+			if (st.is_simple_type ()) {
+				Report.error (st.source_reference, "The type `%s` doesn't declare a GValue take function".printf (st.get_full_name ()));
+			} else if (CCodeBaseModule.get_ccode_has_type_id (st)) {
+				return "g_value_take_boxed";
+			} else {
+				return "g_value_set_pointer";
+			}
+		} else {
+			return "g_value_set_pointer";
+		}
+		return "";
+	}
+
+	private string get_default_param_spec_function () {
+		if (sym is Class) {
+			var cl = (Class) sym;
+			if (cl.is_fundamental ()) {
+				return CCodeBaseModule.get_ccode_lower_case_name (cl, "param_spec_");
+			} else if (cl.base_class != null) {
+				return CCodeBaseModule.get_ccode_param_spec_function (cl.base_class);
+			} else if (type_id == "G_TYPE_POINTER") {
+				return "g_param_spec_pointer";
+			} else {
+				return "g_param_spec_boxed";
+			}
+		} else if (sym is Interface) {
+			foreach (var prereq in ((Interface) sym).get_prerequisites ()) {
+				var func = CCodeBaseModule.get_ccode_param_spec_function (prereq.data_type);
+				if (func != "") {
+					return func;
+				}
+			}
+			return "g_param_spec_pointer";
+		}
+		return "";
+	}
+
+	private string get_default_default_value () {
+		if (sym is Enum) {
+			return "0";
+		} else if (sym is Struct) {
+			var st = (Struct) sym;
+			var base_st = st.base_struct;
+
+			if (base_st != null) {
+				return CCodeBaseModule.get_ccode_default_value (base_st);
+			}
+
+			if (CodeContext.get ().profile == Profile.DOVA) {
+				if (st.is_boolean_type ()) {
+					return "false";
+				} else if (st.is_integer_type () || st.is_floating_type ()) {
+					return "0";
+				}
+			}
+		}
+		return "";
+	}
+
+	private string get_finish_name_for_basename (string basename) {
+		string result = basename;
+		if (result.has_suffix ("_async")) {
+			result = result.substring (0, result.length - "_async".length);
+		}
+		return result + "_finish";
+	}
+
+	private string get_default_real_name () {
+		var m = (Method) sym;
+		if (m is CreationMethod) {
+			var parent = m.parent_symbol as Class;
+
+			if (parent == null || parent.is_compact) {
+				return name;
+			}
+
+			string infix = "construct";
+
+			if (CodeContext.get ().profile == Profile.DOVA) {
+				infix = "init";
+			}
+
+			if (m.name == ".new") {
+				return "%s%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (parent), infix);
+			} else {
+				return "%s%s_%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (parent), infix, m.name);
+			}
+		} else {
+			if (m.base_method != null || m.base_interface_method != null) {
+				return "%sreal_%s".printf (CCodeBaseModule.get_ccode_lower_case_prefix (m.parent_symbol), m.name);
+			} else {
+				return name;
+			}
+		}
+	}
+
+	private string get_default_const_name () {
+		if (node is DataType) {
+			var type = (DataType) node;
+			string ptr;
+			TypeSymbol t;
+			// FIXME: workaround to make constant arrays possible
+			if (type is ArrayType) {
+				t = ((ArrayType) type).element_type.data_type;
+			} else {
+				t = type.data_type;
+			}
+			if (!t.is_reference_type ()) {
+				ptr = "";
+			} else {
+				ptr = "*";
+			}
+
+			return "const %s%s".printf (CCodeBaseModule.get_ccode_name (t), ptr);
+		} else {
+			if (node is Class && ((Class) node).is_immutable) {
+				return "const %s".printf (name);
+			} else {
+				return name;
+			}
+		}
+	}
+}
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