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![Stephan Sundermann](/assets/img/avatar_default.png)
Fixed length arrays are available in gobject introspection and are already converted by the bindinator tool. The array_len attribute was only used in structs. This adds support for them as method parameters, generating the correct code for them. Fixes issue #98. Signed-off-by: Bertrand Lorentz <bertrand.lorentz@gmail.com>
178 lines
4.9 KiB
C#
178 lines
4.9 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.Generic;
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using System.Xml;
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public class ArrayParameter : Parameter {
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bool null_terminated;
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public ArrayParameter (XmlElement elem) : base (elem)
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{
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null_terminated = elem.GetAttributeAsBoolean ("null_term_array");
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if (elem.HasAttribute ("array_len"))
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FixedArrayLength = Int32.Parse (elem.GetAttribute ("array_len"));
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}
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public override string MarshalType {
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get {
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if (Generatable is StructBase)
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return CSType;
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else
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return base.MarshalType;
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}
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}
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bool NullTerminated {
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get {
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return null_terminated;
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}
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}
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public int? FixedArrayLength { get; private set; }
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public override string[] Prepare {
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get {
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if (CSType == MarshalType && !FixedArrayLength.HasValue)
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return new string [0];
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var result = new List<string> ();
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if (FixedArrayLength.HasValue) {
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result.Add (String.Format ("{0} = new {1}[{2}];", Name, MarshalType.TrimEnd ('[', ']'), FixedArrayLength));
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return result.ToArray ();
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}
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result.Add (String.Format ("int cnt_{0} = {0} == null ? 0 : {0}.Length;", CallName));
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result.Add (String.Format ("{0}[] native_{1} = new {0} [cnt_{1}" + (NullTerminated ? " + 1" : "") + "];", MarshalType.TrimEnd('[', ']'), CallName));
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result.Add (String.Format ("for (int i = 0; i < cnt_{0}; i++)", CallName));
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IGeneratable gen = Generatable;
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if (gen is IManualMarshaler)
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result.Add (String.Format ("\tnative_{0} [i] = {1};", CallName, (gen as IManualMarshaler).AllocNative (CallName + "[i]")));
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else
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result.Add (String.Format ("\tnative_{0} [i] = {1};", CallName, gen.CallByName (CallName + "[i]")));
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if (NullTerminated)
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result.Add (String.Format ("native_{0} [cnt_{0}] = IntPtr.Zero;", CallName));
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return result.ToArray ();
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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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if (CSType != MarshalType)
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return "native_" + CallName;
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else if (FixedArrayLength.HasValue)
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return base.CallString;
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else
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return 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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if (CSType == MarshalType)
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return new string [0];
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IGeneratable gen = Generatable;
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if (gen is IManualMarshaler) {
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string [] result = new string [4];
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result [0] = "for (int i = 0; i < native_" + CallName + ".Length" + (NullTerminated ? " - 1" : "") + "; i++) {";
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result [1] = "\t" + CallName + " [i] = " + Generatable.FromNative ("native_" + CallName + "[i]") + ";";
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result [2] = "\t" + (gen as IManualMarshaler).ReleaseNative ("native_" + CallName + "[i]") + ";";
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result [3] = "}";
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return result;
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}
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return new string [0];
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}
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}
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}
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public class ArrayCountPair : ArrayParameter {
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XmlElement count_elem;
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bool invert;
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public ArrayCountPair (XmlElement array_elem, XmlElement count_elem, bool invert) : base (array_elem)
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{
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this.count_elem = count_elem;
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this.invert = invert;
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}
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string CountNativeType {
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get {
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return SymbolTable.Table.GetMarshalType(count_elem.GetAttribute("type"));
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}
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}
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string CountType {
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get {
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return SymbolTable.Table.GetCSType(count_elem.GetAttribute("type"));
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}
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}
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string CountCast {
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get {
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if (CountType == "int")
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return String.Empty;
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else
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return "(" + CountType + ") ";
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}
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}
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string CountName {
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get {
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return SymbolTable.Table.MangleName (count_elem.GetAttribute("name"));
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}
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}
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string CallCount (string name)
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{
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string result = CountCast + "(" + name + " == null ? 0 : " + name + ".Length)";
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IGeneratable gen = SymbolTable.Table[count_elem.GetAttribute("type")];
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return gen.CallByName (result);
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}
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public override string CallString {
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get {
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if (invert)
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return CallCount (CallName) + ", " + base.CallString;
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else
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return base.CallString + ", " + CallCount (CallName);
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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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if (invert)
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return CountNativeType + " " + CountName + ", " + MarshalType + " " + Name;
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else
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return MarshalType + " " + Name + ", " + CountNativeType + " " + CountName;
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}
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}
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}
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}
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