mirror of
https://github.com/Ryujinx/GtkSharp.git
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303 lines
6.9 KiB
C#
303 lines
6.9 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;
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using System.Collections.Generic;
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using System.Xml;
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public class Parameters : IEnumerable<Parameter> {
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IList<Parameter> param_list = new List<Parameter> ();
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XmlElement elem;
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bool first_is_instance;
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public Parameters (XmlElement elem) : this (elem, false) { }
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public Parameters (XmlElement elem, bool first_is_instance)
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{
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if (elem == null)
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valid = true;
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this.elem = elem;
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this.first_is_instance = first_is_instance;
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if (first_is_instance)
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is_static = false;
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}
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public int Count {
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get { return param_list.Count; }
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}
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// gapi assumes GError** parameters to be error parameters in version 1 and 2
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private bool throws = false;
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public bool Throws {
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get {
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if (Parser.GetVersion (elem.OwnerDocument.DocumentElement) <= 2)
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return true;
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if (!throws && elem.HasAttribute ("throws"))
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throws = elem.GetAttributeAsBoolean ("throws");
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return throws;
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}
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}
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public int VisibleCount {
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get {
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int visible = 0;
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foreach (Parameter p in this) {
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if (!IsHidden (p))
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visible++;
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}
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return visible;
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}
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}
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public Parameter this [int idx] {
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get {
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return param_list [idx];
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}
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}
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public bool IsHidden (Parameter p)
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{
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int idx = param_list.IndexOf (p);
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if (idx > 0 && p.IsLength && p.PassAs == String.Empty && this [idx - 1].IsString)
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return true;
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if (p.IsCount)
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return true;
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if (p.CType == "GError**" && Throws)
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return true;
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if (HasCB || HideData) {
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if (Parser.GetVersion (elem.OwnerDocument.DocumentElement) >= 3) {
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foreach (Parameter param in param_list) {
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if (param.Closure == idx)
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return true;
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if (param.DestroyNotify == idx)
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return true;
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}
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} else {
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if (p.IsUserData && (idx == Count - 1))
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return true;
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if (p.IsUserData && (idx == Count - 2) && this [Count - 1] is ErrorParameter)
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return true;
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if (p.IsUserData && idx > 0 && this [idx - 1].Generatable is CallbackGen)
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return true;
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if (p.IsDestroyNotify && (idx == Count - 1) && this [idx - 1].IsUserData)
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return true;
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}
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}
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return false;
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}
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bool has_cb;
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public bool HasCB {
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get { return has_cb; }
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set { has_cb = value; }
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}
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public bool HasOutParam {
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get {
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foreach (Parameter p in this)
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if (p.PassAs == "out")
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return true;
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return false;
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}
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}
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bool hide_data;
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public bool HideData {
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get { return hide_data; }
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set { hide_data = value; }
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}
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bool is_static;
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public bool Static {
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get { return is_static; }
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set { is_static = value; }
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}
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bool has_optional;
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internal bool HasOptional {
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get { return has_optional;}
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}
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public Parameter GetCountParameter (string param_name)
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{
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foreach (Parameter p in this)
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if (p.Name == param_name) {
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p.IsCount = true;
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return p;
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}
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return null;
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}
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void Clear ()
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{
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elem = null;
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param_list.Clear ();
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param_list = null;
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}
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public IEnumerator<Parameter> GetEnumerator ()
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{
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return param_list.GetEnumerator ();
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}
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IEnumerator IEnumerable.GetEnumerator ()
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{
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return GetEnumerator ();
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}
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bool valid = false;
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public bool Validate (LogWriter log)
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{
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if (valid)
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return true;
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if (elem == null)
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return false;
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for (int i = first_is_instance ? 1 : 0; i < elem.ChildNodes.Count; i++) {
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XmlElement parm = elem.ChildNodes [i] as XmlElement;
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if (parm == null || parm.Name != "parameter")
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continue;
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Parameter p = new Parameter (parm);
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if (p.IsEllipsis) {
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log.Warn ("Ellipsis parameter: hide and bind manually if no alternative exists. ");
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Clear ();
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return false;
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}
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if ((p.CSType == "") || (p.Name == "") ||
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(p.MarshalType == "") || (SymbolTable.Table.CallByName(p.CType, p.Name) == "")) {
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log.Warn ("Unknown type {1} on parameter {0}", p.Name, p.CType);
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Clear ();
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return false;
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}
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if (p.IsOptional && p.PassAs == String.Empty)
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has_optional = true;
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IGeneratable gen = p.Generatable;
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if (p.IsArray) {
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p = new ArrayParameter (parm);
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if (i < elem.ChildNodes.Count - 1) {
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XmlElement next = elem.ChildNodes [i + 1] as XmlElement;
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if (next != null || next.Name == "parameter") {
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Parameter c = new Parameter (next);
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if (c.IsCount) {
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p = new ArrayCountPair (parm, next, false);
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i++;
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}
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}
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}
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} else if (p.IsCount) {
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p.IsCount = false;
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if (i < elem.ChildNodes.Count - 1) {
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XmlElement next = elem.ChildNodes [i + 1] as XmlElement;
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if (next != null || next.Name == "parameter") {
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Parameter a = new Parameter (next);
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if (a.IsArray) {
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p = new ArrayCountPair (next, parm, true);
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i++;
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}
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}
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}
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} else if (p.CType == "GError**" && Throws)
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p = new ErrorParameter (parm);
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else if (gen is StructBase || gen is ByRefGen) {
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p = new StructParameter (parm);
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} else if (gen is CallbackGen) {
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has_cb = true;
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}
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param_list.Add (p);
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}
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if (Parser.GetVersion (elem.OwnerDocument.DocumentElement) < 3 &&
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has_cb && Count > 2 && this [Count - 3].Generatable is CallbackGen && this [Count - 2].IsUserData && this [Count - 1].IsDestroyNotify)
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this [Count - 3].Scope = "notified";
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valid = true;
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return true;
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}
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public bool IsAccessor {
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get {
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return VisibleCount == 1 && AccessorParam.PassAs == "out";
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}
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}
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public Parameter AccessorParam {
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get {
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foreach (Parameter p in this) {
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if (!IsHidden (p))
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return p;
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}
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return null;
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}
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}
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public string AccessorReturnType {
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get {
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Parameter p = AccessorParam;
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if (p != null)
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return p.CSType;
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else
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return null;
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}
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}
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public string AccessorName {
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get {
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Parameter p = AccessorParam;
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if (p != null)
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return p.Name;
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else
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return null;
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}
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}
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public string ImportSignature {
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get {
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if (Count == 0)
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return String.Empty;
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string[] result = new string [Count];
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for (int i = 0; i < Count; i++)
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result [i] = this [i].NativeSignature;
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return String.Join (", ", result);
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}
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}
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}
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}
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