bdc5c7071f
* gdk/Gdk.metadata : mark an array param on PixbufDestroyNotify * gdk/gdk-api.xml : regenerated * generator/CallbackGen.cs : Handle out params in callback sigs and ditch the object[] args handling for typed args. * generator/Parameters.cs : more proactive PassAs logic. We now default all simple pointer types (uint*, int*, double*, etc...) to out params unless they are marked otherwise in the XML with a pass_as tag or an array tag. [Fixes #32104] svn path=/trunk/gtk-sharp/; revision=18993
457 lines
11 KiB
C#
457 lines
11 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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// (c) 2001-2002 Mike Kestner
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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.IO;
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using System.Xml;
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public class Parameter {
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private XmlElement elem;
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public Parameter (XmlElement e)
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{
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elem = e;
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}
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public string CType {
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get {
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string type = elem.GetAttribute("type");
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if (type == "void*")
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type = "gpointer";
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return type;
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}
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}
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public string CSType {
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get {
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string cstype = SymbolTable.Table.GetCSType( elem.GetAttribute("type"));
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if (cstype == "void")
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cstype = "System.IntPtr";
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if (IsArray) {
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cstype += "[]";
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cstype = cstype.Replace ("ref ", "");
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}
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return cstype;
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}
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}
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public IGeneratable Generatable {
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get {
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return SymbolTable.Table[CType];
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}
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}
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public bool IsArray {
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get {
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return elem.HasAttribute("array");
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}
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}
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public bool IsEllipsis {
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get {
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return elem.HasAttribute("ellipsis");
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}
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}
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public bool IsLength {
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get {
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if (Name.EndsWith("len") || Name.EndsWith("length"))
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switch (CSType) {
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case "int":
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case "uint":
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case "long":
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case "ulong":
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case "short":
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case "ushort":
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return true;
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default:
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return false;
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}
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else
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return false;
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}
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}
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public bool IsString {
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get {
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return (CSType == "string");
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}
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}
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public bool IsUserData {
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get {
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return CType == "gpointer" && (Name.EndsWith ("data") || Name.EndsWith ("data_or_owner"));
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}
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}
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public string MarshalType {
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get {
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string type = SymbolTable.Table.GetMarshalType( elem.GetAttribute("type"));
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if (type == "void")
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type = "System.IntPtr";
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if (IsArray) {
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type += "[]";
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type = type.Replace ("ref ", "");
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}
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return type;
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}
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}
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public string Name {
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get {
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return SymbolTable.Table.MangleName (elem.GetAttribute("name"));
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}
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}
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public bool NullOk {
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get {
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return elem.HasAttribute ("null_ok");
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}
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}
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public string PassAs {
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get {
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if (elem.HasAttribute ("pass_as"))
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return elem.GetAttribute ("pass_as");
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if (IsArray)
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return "";
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if (Generatable is SimpleGen && !(Generatable is ConstStringGen) && CType.EndsWith ("*") && !CSType.EndsWith ("IntPtr"))
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return "out";
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return "";
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}
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}
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public string StudlyName {
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get {
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string name = elem.GetAttribute("name");
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string[] segs = name.Split('_');
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string studly = "";
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foreach (string s in segs) {
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if (s.Trim () == "")
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continue;
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studly += (s.Substring(0,1).ToUpper() + s.Substring(1));
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}
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return studly;
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}
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}
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}
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public class Parameters {
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private ArrayList param_list;
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private XmlElement elem;
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private string impl_ns;
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private string import_sig = "";
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private string call_string = "";
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private string signature = "";
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private string signature_types = "";
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private bool hide_data;
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private bool is_static;
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public Parameters (XmlElement elem, string impl_ns) {
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this.elem = elem;
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this.impl_ns = impl_ns;
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param_list = new ArrayList ();
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foreach (XmlNode node in elem.ChildNodes) {
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XmlElement parm = node as XmlElement;
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if (parm != null && parm.Name == "parameter")
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param_list.Add (new Parameter (parm));
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}
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}
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public string CallString {
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get {
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return call_string;
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}
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}
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public int Count {
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get {
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return param_list.Count;
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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] as Parameter;
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}
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}
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public string ImportSig {
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get {
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return import_sig;
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}
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}
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public string Signature {
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get {
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return signature;
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}
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}
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public string SignatureTypes {
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get {
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return signature_types;
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}
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}
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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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public bool Static {
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set { is_static = value; }
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}
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public bool Validate ()
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{
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foreach (Parameter p in param_list) {
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if (p.IsEllipsis) {
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Console.Write("Ellipsis parameter ");
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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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Console.Write("Name: " + p.Name + " Type: " + p.CType + " ");
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return false;
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}
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}
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return true;
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}
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public void CreateSignature (bool is_set)
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{
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import_sig = call_string = signature = signature_types = "";
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bool need_sep = false;
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bool has_callback = hide_data;
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SymbolTable table = SymbolTable.Table;
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for (int i = 0; i < Count; i++) {
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string type = this [i].CType;
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string cs_type = this [i].CSType;
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string m_type = this [i].MarshalType;
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string name = this [i].Name;
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if (i > 0 && this [i - 1].IsString && this [i].IsLength) {
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call_string += ", " + this [i - 1].Name + ".Length";
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import_sig += ", " + m_type + " " + name;
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continue;
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}
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string call_parm_name = name;
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if (is_set && i == 0)
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call_parm_name = "value";
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string call_parm;
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if (table.IsCallback (type)) {
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has_callback = true;
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call_parm = table.CallByName (type, call_parm_name + "_wrapper");
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} else
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call_parm = table.CallByName(type, call_parm_name);
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if (this [i].NullOk && !cs_type.EndsWith ("IntPtr") && !table.IsStruct (type))
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call_parm = String.Format ("({0} != null) ? {1} : {2}", call_parm_name, call_parm, table.IsCallback (type) ? "null" : "IntPtr.Zero");
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if (this [i].IsArray)
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call_parm = call_parm.Replace ("ref ", "");
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if (IsVarArgs && i == (Count - 1) && VAType == "length_param") {
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cs_type = "params " + cs_type + "[]";
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m_type += "[]";
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}
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if (need_sep) {
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call_string += ", ";
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import_sig += ", ";
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if (type != "GError**" && !(IsVarArgs && i == (Count - 1) && VAType == "length_param"))
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{
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signature += ", ";
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signature_types += ":";
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}
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} else {
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need_sep = true;
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}
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if (type == "GError**") {
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call_string += "out ";
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import_sig += "out ";
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} else if (this [i].PassAs != "" && !IsVarArgs) {
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signature += this [i].PassAs + " ";
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// We only need to do this for value types
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if (type != "GError**" && m_type != "IntPtr" && m_type != "System.IntPtr")
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{
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import_sig += this [i].PassAs + " ";
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call_string += this [i].PassAs + " ";
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}
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if (table.IsEnum (type))
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call_parm = name + "_as_int";
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else if (table.IsObject (type) || table.IsOpaque (type) || cs_type == "GLib.Value") {
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call_parm = this [i].PassAs + " " + call_parm.Replace (".Handle", "_handle");
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import_sig += this [i].PassAs + " ";
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}
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}
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if (IsVarArgs && i == (Count - 2) && VAType == "length_param") {
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call_string += this [Count - 1].Name + ".Length";
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} else {
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if (!(type == "GError**" || (has_callback && (type == "gpointer" || type == "void*") && (i == Count - 1) && (name.EndsWith ("data") || name.EndsWith ("data_or_owner"))))) {
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signature += (cs_type + " " + name);
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signature_types += cs_type;
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} else if (type == "GError**") {
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call_parm = call_parm.Replace (name, "error");
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} else if ((type == "gpointer" || type == "void*") && (i == Count - 1) && (name.EndsWith ("data") || name.EndsWith ("data_or_owner"))) {
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call_parm = "IntPtr.Zero";
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}
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call_string += call_parm;
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}
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if (table.IsCallback (type))
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m_type = impl_ns + "Sharp" + m_type.Substring(m_type.IndexOf("."));
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import_sig += (m_type + " " + name);
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}
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// FIXME: lame
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call_string = call_string.Replace ("out ref", "out");
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import_sig = import_sig.Replace ("out ref", "out");
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call_string = call_string.Replace ("ref ref", "ref");
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import_sig = import_sig.Replace ("ref ref", "ref");
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// FIXME: this is also lame, I need to fix the need_sep algo
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if (signature.EndsWith (", "))
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signature = signature.Remove (signature.Length - 2, 2);
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}
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public void Initialize (GenerationInfo gen_info, bool is_get, bool is_set, string indent)
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{
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StreamWriter sw = gen_info.Writer;
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foreach (Parameter p in param_list) {
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IGeneratable gen = p.Generatable;
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string name = p.Name;
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if (is_set)
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name = "value";
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if (is_get) {
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sw.WriteLine (indent + "\t\t\t" + p.CSType + " " + name + ";");
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if (gen is ObjectGen || gen is OpaqueGen || p.CSType == "GLib.Value")
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sw.WriteLine(indent + "\t\t\t" + name + " = new " + p.CSType + "();");
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}
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if ((is_get || p.PassAs == "out") && (gen is ObjectGen || gen is OpaqueGen || p.CSType == "GLib.Value"))
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sw.WriteLine(indent + "\t\t\tIntPtr " + name + "_handle;");
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if (p.PassAs == "out" && gen is EnumGen)
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sw.WriteLine(indent + "\t\t\tint " + name + "_as_int;");
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if (gen is CallbackGen) {
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CallbackGen cbgen = gen as CallbackGen;
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string wrapper = cbgen.GenWrapper(impl_ns, gen_info);
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sw.WriteLine (indent + "\t\t\t{0} {1}_wrapper = null;", wrapper, name);
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sw.Write (indent + "\t\t\t");
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if (p.NullOk)
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sw.Write ("if ({0} != null) ", name);
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sw.WriteLine ("{1}_wrapper = new {0} ({1}, {2});", wrapper, name, is_static ? "null" : "this");
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}
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}
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if (ThrowsException)
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sw.WriteLine (indent + "\t\t\tIntPtr error = IntPtr.Zero;");
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}
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public void Finish (StreamWriter sw, string indent)
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{
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bool ref_owned_needed = true;
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foreach (Parameter p in param_list) {
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if (p.PassAs == "out" && p.Generatable is EnumGen) {
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sw.WriteLine(indent + "\t\t\t" + p.Name + " = (" + p.CSType + ") " + p.Name + "_as_int;");
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}
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IGeneratable gen = p.Generatable;
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if (ref_owned_needed && gen is ObjectGen && p.PassAs == "out") {
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ref_owned_needed = false;
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sw.WriteLine(indent + "\t\t\tbool ref_owned = false;");
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}
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if (p.PassAs == "out" && (gen is ObjectGen || gen is OpaqueGen || p.CSType == "GLib.Value"))
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sw.WriteLine(indent + "\t\t\t" + p.Name + " = " + gen.FromNativeReturn (p.Name + "_handle") + ";");
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}
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}
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public void HandleException (StreamWriter sw, string indent)
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{
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if (!ThrowsException)
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return;
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sw.WriteLine (indent + "\t\t\tif (error != IntPtr.Zero) throw new GLib.GException (error);");
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}
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public bool IsAccessor {
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get {
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return Count == 1 && this [0].PassAs == "out";
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}
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}
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public bool ThrowsException {
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get {
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if (Count < 1)
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return false;
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return this [Count - 1].CType == "GError**";
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}
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}
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public bool IsVarArgs {
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get {
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return elem.HasAttribute ("va_type");
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}
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}
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public string VAType {
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get {
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return elem.GetAttribute ("va_type");
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}
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}
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public string AccessorReturnType {
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get {
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if (Count > 0)
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return this [0].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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if (Count > 0)
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return this [0].Name;
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else
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return null;
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}
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}
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}
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}
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