GtkSharp/generator/Field.cs

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C#
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// GtkSharp.Generation.Field.cs - The Field generation Class.
//
// Author: Mike Kestner <mkestner@ximian.com>
//
// (c) 2004 Novell, Inc.
namespace GtkSharp.Generation {
using System;
using System.IO;
using System.Xml;
public class Field {
public static int bitfields;
XmlElement elem;
public Field (XmlElement elem)
{
this.elem = elem;
}
public int ArrayLength {
get {
if (!IsArray)
return 0;
int result;
try {
result = Int32.Parse (elem.GetAttribute("array_len"));
} catch (Exception e) {
Console.Write ("Non-numeric array_len: " + elem.GetAttribute("array_len"));
Console.WriteLine (" warning: array field {0} incorrectly generated", Name);
result = 0;
}
return result;
}
}
public string CSType {
get {
string type = SymbolTable.Table.GetCSType (CType);
if (IsArray)
type += "[]";
else if (IsBit)
type = "uint";
else if ((IsPointer || SymbolTable.Table.IsOpaque (CType)) && type != "string")
type = "IntPtr";
else if (SymbolTable.Table.IsCallback (CType))
type = "IntPtr";
return type;
}
}
public string CType {
get {
return elem.GetAttribute ("type");
}
}
public bool IsArray {
get {
return elem.HasAttribute("array_len");
}
}
public bool IsBit {
get {
return (elem.HasAttribute("bits") && (elem.GetAttribute("bits") == "1"));
}
}
public bool IsPadding {
get {
string c_name = elem.GetAttribute ("cname");
return (c_name.StartsWith ("dummy"));
}
}
public bool IsPointer {
get {
return (CType.EndsWith ("*") || CType.EndsWith ("pointer"));
}
}
public string Name {
get {
string result = "";
if ((IsPointer || SymbolTable.Table.IsOpaque (CType)) && CSType != "string")
result = "_";
if (IsBit)
result = String.Format ("_bitfield{0}", bitfields++);
else
result += SymbolTable.Table.MangleName (elem.GetAttribute ("cname"));
return result;
}
}
public string Protection {
get {
if (IsArray)
// FIXME
return "public";
else if (IsBit || IsPadding || SymbolTable.Table.IsCallback (CType))
return "private";
else if ((IsPointer || SymbolTable.Table.IsOpaque (CType)) && CSType != "string")
return "private";
else
return "public";
}
}
public bool Generate (StreamWriter sw)
{
if (CSType == "") {
Console.WriteLine ("Field has unknown Type {0}", CType);
Statistics.ThrottledCount++;
return false;
}
SymbolTable table = SymbolTable.Table;
if (IsArray)
sw.WriteLine ("\t\t[MarshalAs (UnmanagedType.ByValArray, SizeConst=" + ArrayLength + ")]");
sw.WriteLine ("\t\t{0} {1} {2};", Protection, CSType, table.MangleName (Name));
string wrapped = table.GetCSType (CType);
string wrapped_name = SymbolTable.Table.MangleName (elem.GetAttribute ("cname"));
if (table.IsObject (CType)) {
sw.WriteLine ();
sw.WriteLine ("\t\tpublic " + wrapped + " " + wrapped_name + " {");
sw.WriteLine ("\t\t\tget { ");
sw.WriteLine ("\t\t\t\t" + wrapped + " ret = " + table.FromNativeReturn(CType, Name) + ";");
sw.WriteLine ("\t\t\t\treturn ret;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t\tset { " + Name + " = " + table.CallByName (CType, "value") + "; }");
sw.WriteLine ("\t\t}");
} else if (table.IsOpaque (CType)) {
sw.WriteLine ();
sw.WriteLine ("\t\tpublic " + wrapped + " " + wrapped_name + " {");
sw.WriteLine ("\t\t\tget { ");
sw.WriteLine ("\t\t\t\t" + wrapped + " ret = " + table.FromNativeReturn(CType, Name) + ";");
sw.WriteLine ("\t\t\t\tif (ret == null) ret = new " + wrapped + "(" + Name + ");");
sw.WriteLine ("\t\t\t\treturn ret;");
sw.WriteLine ("\t\t\t}");
sw.WriteLine ("\t\t\tset { " + Name + " = " + table.CallByName (CType, "value") + "; }");
sw.WriteLine ("\t\t}");
} else if (IsPointer && (table.IsStruct (CType) || table.IsBoxed (CType))) {
sw.WriteLine ();
sw.WriteLine ("\t\tpublic " + wrapped + " " + wrapped_name + " {");
sw.WriteLine ("\t\t\tget { return " + table.FromNativeReturn (CType, Name) + "; }");
sw.WriteLine ("\t\t}");
}
return true;
}
}
}