GtkSharp/generator/Method.cs
Mike Kestner 1c4b5f81ba 2004-12-26 Mike Kestner <mkestner@novell.com>
* generator/CustomMarshalerGen.cs : kill bad idea unused class.
	* generator/Makefile.am : remove CustomMarshalerGen.cs.
	* generator/Method.cs : remove CustomMarshalerGen reference.

svn path=/trunk/gtk-sharp/; revision=38092
2004-12-26 19:40:24 +00:00

424 lines
12 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 {
private string libname;
private XmlElement elem;
private ReturnValue retval;
private Parameters parms;
private Signature sig;
private ImportSignature isig;
private MethodBody body;
private ClassBase container_type;
private bool initialized = false;
private string call;
private string name;
private string protection = "public";
private bool is_get, is_set;
private bool needs_ref = false;
private bool deprecated = false;
public Method (string libname, XmlElement elem, ClassBase container_type)
{
this.elem = elem;
this.retval = new ReturnValue (elem["return-type"]);
if (elem["parameters"] != null) {
parms = new Parameters (elem["parameters"], container_type.NS);
parms.Static = IsShared;
}
this.container_type = container_type;
if (!container_type.IsDeprecated && elem.HasAttribute ("deprecated"))
deprecated = elem.GetAttribute ("deprecated") == "1";
this.name = elem.GetAttribute("name");
if (name == "GetType")
name = "GetGType";
if (elem.HasAttribute ("library"))
this.libname = elem.GetAttribute ("library");
else
this.libname = libname;
// caller does not own reference?
if (elem.HasAttribute ("needs_ref"))
this.needs_ref = (elem.GetAttribute ("needs_ref") == "1");
}
public string CName {
get {
return elem.GetAttribute ("cname");
}
}
public bool IsDeprecated {
get {
return deprecated;
}
}
public bool IsGetter {
get {
return is_get;
}
}
public bool IsSetter {
get {
return is_set;
}
}
private bool IsShared {
get {
return elem.GetAttribute ("shared") == "true";
}
}
public string Name {
get {
return name;
}
set {
name = value;
}
}
public string Protection {
get {
return protection;
}
set {
protection = value;
}
}
public string ReturnType {
get {
return retval.CSType;
}
}
string Safety {
get {
if (body.ThrowsException && !(container_type is InterfaceGen))
return "unsafe ";
else
return "";
}
}
public Signature Signature {
get {
return sig;
}
}
public override bool Equals (object o)
{
if (!(o is Method))
return false;
Method a = this;
Method b = (Method) o;
if (a.Name != b.Name)
return false;
if (a.Signature == null)
return b.Signature == null;
if (b.Signature == null)
return false;
return (a.Signature.Types == b.Signature.Types);
}
public override int GetHashCode ()
{
return Name.GetHashCode () ^ (Signature == null ? 0 : Signature.Types.GetHashCode ());
}
private bool Initialize ()
{
if (initialized)
return true;
is_get = (((parms != null && ((parms.IsAccessor && retval.CSType == "void") || (parms.Count == 0 && retval.CSType != "void"))) || (parms == null && retval.CSType != "void")) && Name.Length > 3 && (Name.StartsWith ("Get") || Name.StartsWith ("Is") || Name.StartsWith ("Has")));
is_set = ((parms != null && (parms.IsAccessor || (parms.Count == 1 && retval.CSType == "void"))) && (Name.Length > 3 && Name.Substring(0, 3) == "Set"));
sig = new Signature (parms);
isig = new ImportSignature (parms, container_type.NS);
body = new MethodBody (parms, container_type.NS);
call = "(" + (IsShared ? "" : container_type.CallByName () + (parms != null ? ", " : "")) + body.GetCallString (is_set) + ")";
initialized = true;
return true;
}
public bool Validate ()
{
if (!Initialize ())
return false;
if (parms != null && !parms.Validate ()) {
Console.Write ("in method " + Name + " ");
return false;
}
if (!retval.Validate ()) {
Console.Write(" in method " + Name + " ");
return false;
}
return true;
}
private Method GetComplement ()
{
char complement;
if (is_get)
complement = 'S';
else
complement = 'G';
return container_type.GetMethod (complement + elem.GetAttribute("name").Substring (1));
}
public string Declaration {
get {
return retval.CSType + " " + Name + " (" + (sig != null ? sig.ToString() : "") + ");";
}
}
private void GenerateDeclCommon (StreamWriter sw, ClassBase implementor)
{
if (elem.GetAttribute ("shared") == "true")
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" && parms == null)
sw.Write("override ");
else if (Name == "GetGType" && container_type is ObjectGen)
sw.Write("new ");
else if (elem.HasAttribute("new_flag") || (dup != null && dup.Initialize () && ((dup.Signature != null && sig != null && dup.Signature.ToString() == sig.ToString()) || (dup.Signature == null && sig == null))))
sw.Write("new ");
if (is_get || is_set) {
if (retval.CSType == "void")
sw.Write (parms.AccessorReturnType);
else
sw.Write(retval.CSType);
sw.Write(" ");
if (Name.StartsWith ("Get") || Name.StartsWith ("Set"))
sw.Write (Name.Substring (3));
else
sw.Write (Name);
sw.WriteLine(" { ");
} else if (IsAccessor) {
sw.Write (sig.AccessorType + " " + Name + "(" + sig.AsAccessor + ")");
} else {
sw.Write(retval.CSType + " " + Name + "(" + (sig != null ? sig.ToString() : "") + ")");
}
}
public void GenerateDecl (StreamWriter sw)
{
if (!Initialize ())
return;
if (elem.HasAttribute("shared") &&
(elem.GetAttribute("shared") == "true"))
return;
if (is_get || is_set)
{
Method comp = GetComplement ();
if (comp != null && comp.Validate () && 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 = IsShared ? "" : container_type.MarshalType + " raw";
import_sig += !IsShared && parms != null ? ", " : "";
import_sig += isig.ToString();
sw.WriteLine("\t\t[DllImport(\"" + libname + "\")]");
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)
{
Method comp = null;
if (!Initialize ())
return;
if (implementor != null && elem.HasAttribute("shared") &&
(elem.GetAttribute ("shared") == "true"))
return;
/* we are generated by the get Method, if there is one */
if (is_set || is_get)
{
if (!elem.HasAttribute("new_flag") && container_type.GetPropertyRecursively (Name.Substring (3)) != null)
return;
comp = GetComplement ();
if (comp != null && comp.Validate () && is_set && parms.AccessorReturnType == comp.ReturnType)
return;
if (comp != null && is_set && parms.AccessorReturnType != comp.ReturnType)
{
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.parms.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, "\t");
}
else
GenerateBody (gen_info, "");
if (is_get || is_set)
{
if (comp != null && retval.CSType == comp.parms.AccessorReturnType)
{
gen_info.Writer.WriteLine ();
gen_info.Writer.Write ("\t\t\tset");
comp.GenerateBody (gen_info, "\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, string indent)
{
StreamWriter sw = gen_info.Writer;
sw.WriteLine(" {");
if (IsAccessor)
body.InitAccessor (sw, sig, indent);
body.Initialize(gen_info, is_get, is_set, indent);
SymbolTable table = SymbolTable.Table;
IGeneratable ret_igen = table [retval.CType];
sw.Write(indent + "\t\t\t");
if (retval.MarshalType == "void") {
sw.WriteLine(CName + call + ";");
} else if (ret_igen is ObjectGen || ret_igen is OpaqueGen) {
sw.WriteLine(retval.MarshalType + " raw_ret = " + CName + call + ";");
sw.WriteLine(indent +"\t\t\t" + retval.CSType + " ret;");
sw.WriteLine(indent + "\t\t\tif (raw_ret == IntPtr.Zero)");
sw.WriteLine(indent + "\t\t\t\tret = null;");
sw.WriteLine(indent + "\t\t\telse");
sw.WriteLine(indent +"\t\t\t\tret = " + table.FromNativeReturn(retval.CType, "raw_ret") + ";");
} else {
sw.WriteLine(retval.MarshalType + " raw_ret = " + CName + call + ";");
sw.Write(indent + "\t\t\t");
string raw_parms = "raw_ret";
if (retval.ElementType != String.Empty)
raw_parms += ", typeof (" + retval.ElementType + ")";
sw.WriteLine(retval.CSType + " ret = " + table.FromNativeReturn(retval.CType, raw_parms) + ";");
}
body.Finish (sw, indent);
body.HandleException (sw, indent);
if (is_get && parms != null)
sw.WriteLine (indent + "\t\t\treturn " + parms.AccessorName + ";");
else if (retval.MarshalType != "void")
sw.WriteLine (indent + "\t\t\treturn ret;");
else if (IsAccessor)
body.FinishAccessor (sw, sig, indent);
sw.Write(indent + "\t\t}");
}
bool IsAccessor {
get {
return retval.CSType == "void" && sig.IsAccessor;
}
}
}
}