380 lines
8.3 KiB
C#
380 lines
8.3 KiB
C#
// GtkSharp.Generation.Parameters.cs - The Parameters Generation Class.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// Copyright (c) 2001-2003 Mike Kestner
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// Copyright (c) 2004 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace GtkSharp.Generation {
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using System;
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using System.Collections;
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using System.Xml;
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public class Parameter {
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private XmlElement elem;
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public Parameter (XmlElement e)
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{
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elem = e;
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}
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string call_name;
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public string CallName {
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get {
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if (call_name == null)
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return Name;
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else
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return call_name;
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}
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set {
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call_name = value;
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}
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}
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public string CType {
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get {
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string type = elem.GetAttribute("type");
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if (type == "void*")
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type = "gpointer";
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return type;
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}
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}
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public string CSType {
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get {
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string cstype = SymbolTable.Table.GetCSType( elem.GetAttribute("type"));
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if (cstype == "void")
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cstype = "System.IntPtr";
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if (IsArray) {
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if (IsParams)
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cstype = "params " + cstype;
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cstype += "[]";
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cstype = cstype.Replace ("ref ", "");
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}
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return cstype;
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}
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}
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public IGeneratable Generatable {
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get {
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return SymbolTable.Table[CType];
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}
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}
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public bool IsArray {
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get {
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return elem.GetAttributeAsBoolean ("array") || elem.GetAttributeAsBoolean ("null_term_array");
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}
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}
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public bool IsEllipsis {
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get {
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return elem.GetAttributeAsBoolean ("ellipsis");
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}
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}
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bool is_count;
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bool is_count_set;
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public bool IsCount {
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get {
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if (is_count_set)
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return is_count;
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if (Name.StartsWith("n_"))
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switch (CSType) {
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case "int":
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case "uint":
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case "long":
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case "ulong":
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case "short":
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case "ushort":
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return true;
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default:
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return false;
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}
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else
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return false;
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}
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set {
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is_count_set = true;
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is_count = value;
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}
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}
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public bool IsDestroyNotify {
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get {
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return CType == "GDestroyNotify";
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}
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}
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public bool IsLength {
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get {
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if (Name.EndsWith("len") || Name.EndsWith("length"))
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switch (CSType) {
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case "int":
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case "uint":
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case "long":
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case "ulong":
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case "short":
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case "ushort":
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return true;
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default:
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return false;
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}
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else
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return false;
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}
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}
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public bool IsParams {
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get {
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return elem.HasAttribute("params");
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}
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}
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public bool IsString {
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get {
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return (CSType == "string");
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}
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}
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public bool IsUserData {
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get {
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return CSType == "IntPtr" && (Name.EndsWith ("data") || Name.EndsWith ("data_or_owner"));
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}
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}
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public virtual string MarshalType {
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get {
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string type = SymbolTable.Table.GetMarshalType( elem.GetAttribute("type"));
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if (type == "void" || Generatable is IManualMarshaler)
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type = "IntPtr";
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if (IsArray) {
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type += "[]";
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type = type.Replace ("ref ", "");
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}
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return type;
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}
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}
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public string Name {
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get {
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return SymbolTable.Table.MangleName (elem.GetAttribute("name"));
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}
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}
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public bool Owned {
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get {
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return elem.GetAttribute ("owned") == "true";
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}
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}
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public virtual string NativeSignature {
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get {
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string sig = MarshalType + " " + Name;
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if (PassAs != String.Empty)
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sig = PassAs + " " + sig;
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return sig;
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}
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}
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public string PropertyName {
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get {
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return elem.GetAttribute("property_name");
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}
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}
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string pass_as;
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public string PassAs {
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get {
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if (pass_as != null)
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return pass_as;
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if (elem.HasAttribute ("pass_as"))
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return elem.GetAttribute ("pass_as");
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if (IsArray || CSType.EndsWith ("IntPtr"))
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return "";
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if (CType.EndsWith ("*") && (Generatable is SimpleGen || Generatable is EnumGen))
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return "out";
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return "";
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}
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set {
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pass_as = value;
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}
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}
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string scope;
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public string Scope {
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get {
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if (scope == null)
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scope = elem.GetAttribute ("scope");
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return scope;
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}
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set {
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scope = value;
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}
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}
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public virtual string[] Prepare {
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get {
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IGeneratable gen = Generatable;
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if (gen is IManualMarshaler) {
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string result = "IntPtr native_" + CallName;
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if (PassAs != "out")
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result += " = " + (gen as IManualMarshaler).AllocNative (CallName);
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return new string [] { result + ";" };
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} else if (PassAs == "out" && CSType != MarshalType) {
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return new string [] { gen.MarshalType + " native_" + CallName + ";" };
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} else if (PassAs == "ref" && CSType != MarshalType) {
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return new string [] { gen.MarshalType + " native_" + CallName + " = (" + gen.MarshalType + ") " + CallName + ";" };
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}
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return new string [0];
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}
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}
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public virtual string CallString {
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get {
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string call_parm;
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IGeneratable gen = Generatable;
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if (gen is CallbackGen)
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return SymbolTable.Table.CallByName (CType, CallName + "_wrapper");
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else if (PassAs != String.Empty) {
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call_parm = PassAs + " ";
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if (CSType != MarshalType)
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call_parm += "native_";
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call_parm += CallName;
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} else if (gen is IManualMarshaler)
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call_parm = "native_" + CallName;
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else if (gen is ObjectBase)
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call_parm = (gen as ObjectBase).CallByName (CallName, Owned);
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else
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call_parm = gen.CallByName (CallName);
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return call_parm;
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}
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}
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public virtual string[] Finish {
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get {
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IGeneratable gen = Generatable;
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if (gen is IManualMarshaler) {
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string[] result = new string [PassAs == "ref" ? 2 : 1];
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int i = 0;
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if (PassAs != String.Empty)
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result [i++] = CallName + " = " + Generatable.FromNative ("native_" + CallName) + ";";
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if (PassAs != "out")
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result [i] = (gen as IManualMarshaler).ReleaseNative ("native_" + CallName) + ";";
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return result;
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} else if (PassAs != String.Empty && MarshalType != CSType)
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if (gen is IOwnable)
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return new string [] { CallName + " = " + (gen as IOwnable).FromNative ("native_" + CallName, Owned) + ";" };
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else
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return new string [] { CallName + " = " + gen.FromNative ("native_" + CallName) + ";" };
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return new string [0];
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}
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}
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public string FromNative (string var)
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{
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if (Generatable == null)
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return String.Empty;
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else if (Generatable is IOwnable)
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return ((IOwnable)Generatable).FromNative (var, Owned);
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else
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return Generatable.FromNative (var);
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}
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public string StudlyName {
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get {
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string name = elem.GetAttribute("name");
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string[] segs = name.Split('_');
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string studly = "";
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foreach (string s in segs) {
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if (s.Trim () == "")
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continue;
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studly += (s.Substring(0,1).ToUpper() + s.Substring(1));
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}
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return studly;
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}
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}
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}
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public class ErrorParameter : Parameter {
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public ErrorParameter (XmlElement elem) : base (elem)
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{
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PassAs = "out";
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}
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public override string CallString {
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get {
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return "out error";
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}
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}
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}
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public class StructParameter : Parameter {
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public StructParameter (XmlElement elem) : base (elem) {}
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public override string MarshalType {
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get {
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return "IntPtr";
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}
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}
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public override string[] Prepare {
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get {
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if (PassAs == "out")
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return new string [] { "IntPtr native_" + CallName + " = Marshal.AllocHGlobal (Marshal.SizeOf (typeof (" + Generatable.QualifiedName + ")));"};
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else
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return new string [] { "IntPtr native_" + CallName + " = " + (Generatable as IManualMarshaler).AllocNative (CallName) + ";"};
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}
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}
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public override string CallString {
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get {
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return "native_" + CallName;
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}
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}
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public override string[] Finish {
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get {
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string[] result = new string [2];
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result [0] = CallName + " = " + FromNative ("native_" + CallName) + ";";
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result [1] = (Generatable as IManualMarshaler).ReleaseNative ("native_" + CallName) + ";";
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return result;
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}
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}
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public override string NativeSignature {
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get {
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return "IntPtr " + CallName;
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}
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}
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}
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}
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