GtkSharp/generator/ManagedCallString.cs

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// GtkSharp.Generation.ManagedCallString.cs - The ManagedCallString Class.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright (c) 2003 Mike Kestner
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the GNU General Public
// License as published by the Free Software Foundation.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GtkSharp.Generation {
using System;
using System.Collections;
using System.IO;
public class ManagedCallString {
ArrayList parms = new ArrayList ();
ArrayList special = new ArrayList ();
public ManagedCallString (Parameters parms)
{
for (int i = 1; i < parms.Count; i ++) {
Parameter p = parms [i];
if (p.IsLength && parms [i-1].IsString)
continue;
this.parms.Add (p);
IGeneratable igen = p.Generatable;
if ((igen is StructGen || p.PassAs != "") &&
Automatic memory management for opaque types [#49565] * glib/Opaque.cs (Owned): new property saying whether or not gtk# owns the memory. (Opaque): Set Owned to true in the void ctor and false in the IntPtr one. (GetOpaque): add a new overload that can also create opaques, a la GLib.Object.GetObject. (Ref, Unref, Free): empty virtual methods to be overridden by subclasses. (set_Raw): Unref() and possibly Free() the old value, Ref() the new one. (~Opaque, Dispose): set Raw to IntPtr.Zero (triggering Free/Unref if needed) * parser/gapi2xml.pl (addReturnElem): if the method is named Copy and returns a pointer, set the "owned" attribute on the return-type. * */*-api.raw: Regen * generator/HandleBase.cs (FromNative): Add new FromNative/FromNativeReturn overloads that takes a "bool owned" param. Implement the 1-arg FromNative and FromNativeReturn in terms of that. * generator/ObjectBase.cs (FromNative): Implement HandleBase's new overload. Use the two-arg version of GLib.Object.GetObject when "owned" is true. * generator/OpaqueGen.cs (Generate): Pull out Ref, Unref, and Free/Destroy/Dispose methods and handle them specially by overriding Opaque.Ref, .Unref, and .Free appropriately. (If any of the methods are marked deprecated, output a deprecated do-nothing method as well, to save us from having to write all those deprecated methods by hand.) (FromNative): use GetOpaque, passing "owned". * generator/ReturnValue.cs (FromNative): if the value is a HandleBase, pass Owned to its FromNative(). * generator/Parameters.cs (Owned): new property (for use on out params) (FromNative): Call FromNative() on the generatable, handling Owned in the case of HandleBase. * generator/ManagedCallString.cs: * generator/MethodBody.cs: * generator/Signal.cs: use param.FromNative() rather than param.Generatable.FromNative(), to get ownership right. * */*.metadata: Mark opaque ref/unref/free methods deprecated (except where we were hiding them before). Add "owned" attributes to return values and out params as needed. * pango/AttrIterator.custom (GetFont): work around a memory-management oddity of the underlying method. * pango/AttrFontDesc.cs (AttrFontDesc): copy the passed-in FontDescriptor, since the attribute will assume ownership of it. * gtk/TreeView.custom (GetPathAtPos): set the "owned" flag on the returned TreePaths. * gtk/TargetList.custom: Remove refcounting stuff, which is now handled automatically * gtk/NodeStore.cs (GetPath): clear the Owned flag on the created TreePath so that the underlying structure doesn't get freed when the function returns * gtkhtml/HTMLStream.custom (Destroy): hide this and then reimplement it by hand to keep OpaqueGen from using it in Dispose(), since calling it after an HTMLStream.Close() will result in a crash. svn path=/trunk/gtk-sharp/; revision=47928
2005-08-02 18:45:21 +00:00
(p.Name != p.FromNative (p.Name)))
this.special.Add (true);
else
this.special.Add (false);
}
}
public string Setup (string indent)
{
string ret = "";
for (int i = 0; i < parms.Count; i ++) {
if ((bool)special[i] == false)
continue;
Parameter p = parms [i] as Parameter;
IGeneratable igen = p.Generatable;
ret += indent + igen.QualifiedName + " my" + p.Name;
if (igen is StructGen || p.PassAs == "ref")
Automatic memory management for opaque types [#49565] * glib/Opaque.cs (Owned): new property saying whether or not gtk# owns the memory. (Opaque): Set Owned to true in the void ctor and false in the IntPtr one. (GetOpaque): add a new overload that can also create opaques, a la GLib.Object.GetObject. (Ref, Unref, Free): empty virtual methods to be overridden by subclasses. (set_Raw): Unref() and possibly Free() the old value, Ref() the new one. (~Opaque, Dispose): set Raw to IntPtr.Zero (triggering Free/Unref if needed) * parser/gapi2xml.pl (addReturnElem): if the method is named Copy and returns a pointer, set the "owned" attribute on the return-type. * */*-api.raw: Regen * generator/HandleBase.cs (FromNative): Add new FromNative/FromNativeReturn overloads that takes a "bool owned" param. Implement the 1-arg FromNative and FromNativeReturn in terms of that. * generator/ObjectBase.cs (FromNative): Implement HandleBase's new overload. Use the two-arg version of GLib.Object.GetObject when "owned" is true. * generator/OpaqueGen.cs (Generate): Pull out Ref, Unref, and Free/Destroy/Dispose methods and handle them specially by overriding Opaque.Ref, .Unref, and .Free appropriately. (If any of the methods are marked deprecated, output a deprecated do-nothing method as well, to save us from having to write all those deprecated methods by hand.) (FromNative): use GetOpaque, passing "owned". * generator/ReturnValue.cs (FromNative): if the value is a HandleBase, pass Owned to its FromNative(). * generator/Parameters.cs (Owned): new property (for use on out params) (FromNative): Call FromNative() on the generatable, handling Owned in the case of HandleBase. * generator/ManagedCallString.cs: * generator/MethodBody.cs: * generator/Signal.cs: use param.FromNative() rather than param.Generatable.FromNative(), to get ownership right. * */*.metadata: Mark opaque ref/unref/free methods deprecated (except where we were hiding them before). Add "owned" attributes to return values and out params as needed. * pango/AttrIterator.custom (GetFont): work around a memory-management oddity of the underlying method. * pango/AttrFontDesc.cs (AttrFontDesc): copy the passed-in FontDescriptor, since the attribute will assume ownership of it. * gtk/TreeView.custom (GetPathAtPos): set the "owned" flag on the returned TreePaths. * gtk/TargetList.custom: Remove refcounting stuff, which is now handled automatically * gtk/NodeStore.cs (GetPath): clear the Owned flag on the created TreePath so that the underlying structure doesn't get freed when the function returns * gtkhtml/HTMLStream.custom (Destroy): hide this and then reimplement it by hand to keep OpaqueGen from using it in Dispose(), since calling it after an HTMLStream.Close() will result in a crash. svn path=/trunk/gtk-sharp/; revision=47928
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ret += " = " + p.FromNative (p.Name);
ret += ";\n";
}
return ret;
}
public override string ToString ()
{
if (parms.Count < 1)
return "";
string[] result = new string [parms.Count];
for (int i = 0; i < parms.Count; i ++) {
Parameter p = parms [i] as Parameter;
result [i] = p.PassAs == "" ? "" : p.PassAs + " ";
Automatic memory management for opaque types [#49565] * glib/Opaque.cs (Owned): new property saying whether or not gtk# owns the memory. (Opaque): Set Owned to true in the void ctor and false in the IntPtr one. (GetOpaque): add a new overload that can also create opaques, a la GLib.Object.GetObject. (Ref, Unref, Free): empty virtual methods to be overridden by subclasses. (set_Raw): Unref() and possibly Free() the old value, Ref() the new one. (~Opaque, Dispose): set Raw to IntPtr.Zero (triggering Free/Unref if needed) * parser/gapi2xml.pl (addReturnElem): if the method is named Copy and returns a pointer, set the "owned" attribute on the return-type. * */*-api.raw: Regen * generator/HandleBase.cs (FromNative): Add new FromNative/FromNativeReturn overloads that takes a "bool owned" param. Implement the 1-arg FromNative and FromNativeReturn in terms of that. * generator/ObjectBase.cs (FromNative): Implement HandleBase's new overload. Use the two-arg version of GLib.Object.GetObject when "owned" is true. * generator/OpaqueGen.cs (Generate): Pull out Ref, Unref, and Free/Destroy/Dispose methods and handle them specially by overriding Opaque.Ref, .Unref, and .Free appropriately. (If any of the methods are marked deprecated, output a deprecated do-nothing method as well, to save us from having to write all those deprecated methods by hand.) (FromNative): use GetOpaque, passing "owned". * generator/ReturnValue.cs (FromNative): if the value is a HandleBase, pass Owned to its FromNative(). * generator/Parameters.cs (Owned): new property (for use on out params) (FromNative): Call FromNative() on the generatable, handling Owned in the case of HandleBase. * generator/ManagedCallString.cs: * generator/MethodBody.cs: * generator/Signal.cs: use param.FromNative() rather than param.Generatable.FromNative(), to get ownership right. * */*.metadata: Mark opaque ref/unref/free methods deprecated (except where we were hiding them before). Add "owned" attributes to return values and out params as needed. * pango/AttrIterator.custom (GetFont): work around a memory-management oddity of the underlying method. * pango/AttrFontDesc.cs (AttrFontDesc): copy the passed-in FontDescriptor, since the attribute will assume ownership of it. * gtk/TreeView.custom (GetPathAtPos): set the "owned" flag on the returned TreePaths. * gtk/TargetList.custom: Remove refcounting stuff, which is now handled automatically * gtk/NodeStore.cs (GetPath): clear the Owned flag on the created TreePath so that the underlying structure doesn't get freed when the function returns * gtkhtml/HTMLStream.custom (Destroy): hide this and then reimplement it by hand to keep OpaqueGen from using it in Dispose(), since calling it after an HTMLStream.Close() will result in a crash. svn path=/trunk/gtk-sharp/; revision=47928
2005-08-02 18:45:21 +00:00
result [i] += ((bool)special[i]) ? "my" + p.Name : p.FromNative (p.Name);
}
return String.Join (", ", result);
}
public string Finish (string indent)
{
string ret = "";
for (int i = 0; i < parms.Count; i ++) {
if ((bool)special[i] == false)
continue;
Parameter p = parms [i] as Parameter;
IGeneratable igen = p.Generatable;
if (igen is StructBase)
ret += indent + String.Format ("if ({0} != IntPtr.Zero) System.Runtime.InteropServices.Marshal.StructureToPtr (my{0}, {0}, false);\n", p.Name);
else
ret += indent + p.Name + " = " + igen.ToNativeReturn ("my" + p.Name) + ";\n";
}
return ret;
}
}
}