gstreamer/generator/Method.cs
2009-09-11 10:14:42 +02:00

304 lines
8.7 KiB
C#

// GtkSharp.Generation.Method.cs - The Method Generatable.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright (c) 2001-2003 Mike Kestner
// Copyright (c) 2003-2004 Novell, Inc.
//
// 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;
using System.Xml;
public class Method : MethodBase {
private ReturnValue retval;
private string call;
private bool is_get, is_set;
private bool deprecated = false;
public Method (XmlElement elem, ClassBase container_type) : base (elem, container_type)
{
this.retval = new ReturnValue (elem["return-type"]);
if (!container_type.IsDeprecated && elem.HasAttribute ("deprecated")) {
string attr = elem.GetAttribute ("deprecated");
deprecated = attr == "1" || attr == "true";
}
if (Name == "GetType")
Name = "GetGType";
}
public bool IsDeprecated {
get {
return deprecated;
}
}
public bool IsGetter {
get {
return is_get;
}
}
public bool IsSetter {
get {
return is_set;
}
}
public string ReturnType {
get {
return retval.CSType;
}
}
public override bool Validate ()
{
if (!retval.Validate () || !base.Validate ()) {
Console.Write(" in method " + Name + " ");
return false;
}
Parameters parms = Parameters;
is_get = ((((parms.IsAccessor && retval.IsVoid) || (parms.Count == 0 && !retval.IsVoid)) || (parms.Count == 0 && !retval.IsVoid)) && HasGetterName);
is_set = ((parms.IsAccessor || (parms.VisibleCount == 1 && retval.IsVoid)) && HasSetterName);
call = "(" + (IsStatic ? "" : container_type.CallByName () + (parms.Count > 0 ? ", " : "")) + Body.GetCallString (is_set) + ")";
return true;
}
private Method GetComplement ()
{
char complement;
if (is_get)
complement = 'S';
else
complement = 'G';
return container_type.GetMethod (complement + BaseName.Substring (1));
}
public string Declaration {
get {
return retval.CSType + " " + Name + " (" + (Signature != null ? Signature.ToString() : "") + ");";
}
}
private void GenerateDeclCommon (StreamWriter sw, ClassBase implementor)
{
if (IsStatic)
sw.Write("static ");
sw.Write (Safety);
Method dup = null;
if (container_type != null)
dup = container_type.GetMethodRecursively (Name);
if (implementor != null)
dup = implementor.GetMethodRecursively (Name);
if (Name == "ToString" && Parameters.Count == 0)
sw.Write("override ");
else if (Name == "GetGType" && (container_type is ObjectGen || container_type is MiniObjectGen))
sw.Write("new ");
else if (Modifiers == "new " || (dup != null && ((dup.Signature != null && Signature != null && dup.Signature.ToString() == Signature.ToString()) || (dup.Signature == null && Signature == null))))
sw.Write("new ");
if (is_get || is_set) {
if (retval.IsVoid)
sw.Write (Parameters.AccessorReturnType);
else
sw.Write(retval.CSType);
sw.Write(" ");
if (Name.StartsWith ("Get") || Name.StartsWith ("Set"))
sw.Write (Name.Substring (3));
else {
int dot = Name.LastIndexOf ('.');
if (dot != -1 && (Name.Substring (dot + 1, 3) == "Get" || Name.Substring (dot + 1, 3) == "Set"))
sw.Write (Name.Substring (0, dot + 1) + Name.Substring (dot + 4));
else
sw.Write (Name);
}
sw.WriteLine(" { ");
} else if (IsAccessor) {
sw.Write (Signature.AccessorType + " " + Name + "(" + Signature.AsAccessor + ")");
} else {
sw.Write(retval.CSType + " " + Name + "(" + (Signature != null ? Signature.ToString() : "") + ")");
}
}
public void GenerateDecl (StreamWriter sw)
{
if (IsStatic)
return;
if (is_get || is_set)
{
Method comp = GetComplement ();
if (comp != null && is_set)
return;
sw.Write("\t\t");
GenerateDeclCommon (sw, null);
sw.Write("\t\t\t");
sw.Write ((is_get) ? "get;" : "set;");
if (comp != null && comp.is_set)
sw.WriteLine (" set;");
else
sw.WriteLine ();
sw.WriteLine ("\t\t}");
}
else
{
sw.Write("\t\t");
GenerateDeclCommon (sw, null);
sw.WriteLine (";");
}
Statistics.MethodCount++;
}
public void GenerateImport (StreamWriter sw)
{
string import_sig = IsStatic ? "" : container_type.MarshalType + " raw";
import_sig += !IsStatic && Parameters.Count > 0 ? ", " : "";
import_sig += Parameters.ImportSignature.ToString();
sw.WriteLine("\t\t[DllImport(\"" + LibraryName + "\", CallingConvention = CallingConvention.Cdecl)]");
if (retval.MarshalType.StartsWith ("[return:"))
sw.WriteLine("\t\t" + retval.MarshalType + " static extern " + Safety + retval.CSType + " " + CName + "(" + import_sig + ");");
else
sw.WriteLine("\t\tstatic extern " + Safety + retval.MarshalType + " " + CName + "(" + import_sig + ");");
sw.WriteLine();
}
public void Generate (GenerationInfo gen_info, ClassBase implementor)
{
if (!Validate ())
return;
Method comp = null;
gen_info.CurrentMember = Name;
/* we are generated by the get Method, if there is one */
if (is_set || is_get)
{
if (Modifiers != "new " && container_type.GetPropertyRecursively (Name.Substring (3)) != null)
return;
comp = GetComplement ();
if (comp != null && is_set) {
if (Parameters.AccessorReturnType == comp.ReturnType)
return;
else {
is_set = false;
call = "(Handle, " + Body.GetCallString (false) + ")";
comp = null;
}
}
/* some setters take more than one arg */
if (comp != null && !comp.is_set)
comp = null;
}
GenerateImport (gen_info.Writer);
if (comp != null && retval.CSType == comp.Parameters.AccessorReturnType)
comp.GenerateImport (gen_info.Writer);
if (IsDeprecated)
gen_info.Writer.WriteLine("\t\t[Obsolete]");
gen_info.Writer.Write("\t\t");
if (Protection != "")
gen_info.Writer.Write("{0} ", Protection);
GenerateDeclCommon (gen_info.Writer, implementor);
if (is_get || is_set)
{
gen_info.Writer.Write ("\t\t\t");
gen_info.Writer.Write ((is_get) ? "get" : "set");
GenerateBody (gen_info, implementor, "\t");
}
else
GenerateBody (gen_info, implementor, "");
if (is_get || is_set)
{
if (comp != null && retval.CSType == comp.Parameters.AccessorReturnType)
{
gen_info.Writer.WriteLine ();
gen_info.Writer.Write ("\t\t\tset");
comp.GenerateBody (gen_info, implementor, "\t");
}
gen_info.Writer.WriteLine ();
gen_info.Writer.WriteLine ("\t\t}");
}
else
gen_info.Writer.WriteLine();
gen_info.Writer.WriteLine();
Statistics.MethodCount++;
}
public void GenerateBody (GenerationInfo gen_info, ClassBase implementor, string indent)
{
StreamWriter sw = gen_info.Writer;
sw.WriteLine(" {");
if (!IsStatic && implementor != null)
implementor.Prepare (sw, indent + "\t\t\t");
if (IsAccessor)
Body.InitAccessor (sw, Signature, indent);
Body.Initialize(gen_info, is_get, is_set, indent);
sw.Write(indent + "\t\t\t");
if (retval.IsVoid)
sw.WriteLine(CName + call + ";");
else {
sw.WriteLine(retval.MarshalType + " raw_ret = " + CName + call + ";");
sw.WriteLine(indent + "\t\t\t" + retval.CSType + " ret = " + retval.FromNative ("raw_ret") + ";");
}
if (!IsStatic && implementor != null)
implementor.Finish (sw, indent + "\t\t\t");
Body.Finish (sw, indent);
Body.HandleException (sw, indent);
if (is_get && Parameters.Count > 0)
sw.WriteLine (indent + "\t\t\treturn " + Parameters.AccessorName + ";");
else if (!retval.IsVoid)
sw.WriteLine (indent + "\t\t\treturn ret;");
else if (IsAccessor)
Body.FinishAccessor (sw, Signature, indent);
sw.Write(indent + "\t\t}");
}
bool IsAccessor {
get {
return retval.IsVoid && Signature.IsAccessor;
}
}
}
}