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![Bertrand Lorentz](/assets/img/avatar_default.png)
The additional type information makes the code a bit more safe and readable. At least one bug is fixed by this: in ObjectGen, an invalid child property could still be generated, as it was not removed from the hash table. This should cause no real change to the generated code, except maybe in the order of some members.
274 lines
6.2 KiB
C#
274 lines
6.2 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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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**")
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return true;
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if (HasCB || HideData) {
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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 &&
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this [idx - 1].Generatable is CallbackGen)
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return true;
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if (p.IsDestroyNotify && (idx == Count - 1) &&
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this [idx - 1].IsUserData)
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return true;
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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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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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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**")
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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 (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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