e07bb75fd6
* generator/Method.cs: Don't use the "unsafe" modifier for methods which are part of an interface [fixes #58059]. svn path=/trunk/gtk-sharp/; revision=26843
398 lines
11 KiB
C#
398 lines
11 KiB
C#
// GtkSharp.Generation.Method.cs - The Method Generatable.
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2001-2003 Mike Kestner, (c) 2003 Novell, Inc.
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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 Method {
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private string libname;
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private XmlElement elem;
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private Parameters parms;
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private Signature sig;
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private ImportSignature isig;
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private MethodBody body;
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private ClassBase container_type;
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private bool initialized = false;
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private string call;
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private string rettype, m_ret, s_ret;
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private string element_type = null;
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private string name, cname, safety;
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private string protection = "public";
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private bool is_get, is_set;
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private bool needs_ref = false;
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public Method (string libname, XmlElement elem, ClassBase container_type)
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{
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this.elem = elem;
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if (elem["parameters"] != null) {
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parms = new Parameters (elem["parameters"], container_type.NS);
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}
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this.container_type = container_type;
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this.name = elem.GetAttribute("name");
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if (name == "GetType")
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name = "GetGType";
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if (elem.HasAttribute ("library"))
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this.libname = elem.GetAttribute ("library");
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else
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this.libname = libname;
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// caller does not own reference?
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if (elem.HasAttribute ("needs_ref"))
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this.needs_ref = (elem.GetAttribute ("needs_ref") == "1");
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}
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public bool IsGetter {
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get {
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return is_get;
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}
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}
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public bool IsSetter {
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get {
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return is_set;
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}
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}
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private bool IsShared {
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get {
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return elem.HasAttribute("shared");
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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 name;
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}
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set {
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name = value;
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}
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}
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public string Protection {
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get {
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return protection;
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}
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set {
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protection = value;
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}
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}
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public string ReturnType {
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get {
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return s_ret;
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}
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}
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public Signature Signature {
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get {
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return sig;
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}
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}
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public override bool Equals (object o)
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{
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if (!(o is Method))
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return false;
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Method a = this;
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Method b = (Method) o;
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if (a.Name != b.Name)
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return false;
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if (a.Signature == null)
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return b.Signature == null;
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if (b.Signature == null)
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return false;
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return (a.Signature.Types == b.Signature.Types);
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}
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private bool Initialize ()
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{
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if (initialized)
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return true;
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if (parms != null && !parms.Validate ()) {
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Console.Write ("in method " + Name + " ");
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return false;
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}
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XmlElement ret_elem = elem["return-type"];
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if (ret_elem == null) {
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Console.Write("Missing return type in method ");
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Statistics.ThrottledCount++;
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return false;
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}
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SymbolTable table = SymbolTable.Table;
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rettype = ret_elem.GetAttribute("type");
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m_ret = table.GetMarshalReturnType(rettype);
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s_ret = table.GetCSType(rettype);
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cname = elem.GetAttribute("cname");
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if (ret_elem.HasAttribute("element_type"))
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element_type = ret_elem.GetAttribute("element_type");
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if (ret_elem.HasAttribute("array")) {
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s_ret += "[]";
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m_ret += "[]";
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}
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is_get = (((parms != null && ((parms.IsAccessor && s_ret == "void") || (parms.Count == 0 && s_ret != "void"))) || (parms == null && s_ret != "void")) && Name.Length > 3 && (Name.StartsWith ("Get") || Name.StartsWith ("Is") || Name.StartsWith ("Has")));
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is_set = ((parms != null && (parms.IsAccessor || (parms.Count == 1 && s_ret == "void"))) && (Name.Length > 3 && Name.Substring(0, 3) == "Set"));
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if (parms != null)
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parms.Static = IsShared;
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sig = new Signature (parms);
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isig = new ImportSignature (parms, container_type.NS);
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body = new MethodBody (parms, container_type.NS);
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call = "(" + (IsShared ? "" : container_type.CallByName () + (parms != null ? ", " : "")) + body.GetCallString (is_set) + ")";
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if (body.ThrowsException && !(container_type is InterfaceGen))
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safety = "unsafe ";
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else
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safety = "";
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initialized = true;
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return true;
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}
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public bool Validate ()
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{
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if (!Initialize ())
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return false;
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if (m_ret == "" || s_ret == "") {
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Console.Write("rettype: " + rettype + " method ");
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Statistics.ThrottledCount++;
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return false;
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}
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return true;
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}
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private Method GetComplement ()
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{
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char complement;
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if (is_get)
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complement = 'S';
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else
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complement = 'G';
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return container_type.GetMethod (complement + elem.GetAttribute("name").Substring (1));
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}
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private void GenerateDeclCommon (StreamWriter sw, ClassBase implementor)
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{
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if (elem.HasAttribute("shared"))
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sw.Write("static ");
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sw.Write(safety);
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Method dup = null;
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if (container_type != null)
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dup = container_type.GetMethodRecursively (Name);
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if (implementor != null)
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dup = implementor.GetMethodRecursively (Name);
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if (Name == "ToString" && parms == null)
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sw.Write("override ");
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else if (Name == "GetGType" && container_type is ObjectGen)
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sw.Write("new ");
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else if (elem.HasAttribute("new_flag") || (dup != null && dup.Initialize () && ((dup.Signature != null && sig != null && dup.Signature.ToString() == sig.ToString()) || (dup.Signature == null && sig == null))))
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sw.Write("new ");
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if (is_get || is_set) {
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if (s_ret == "void")
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s_ret = parms.AccessorReturnType;
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sw.Write(s_ret);
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sw.Write(" ");
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if (Name.StartsWith ("Get") || Name.StartsWith ("Set"))
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sw.Write (Name.Substring (3));
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else
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sw.Write (Name);
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sw.WriteLine(" { ");
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} else if (IsAccessor) {
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sw.Write (sig.AccessorType + " " + Name + "(" + sig.AsAccessor + ")");
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} else {
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sw.Write(s_ret + " " + Name + "(" + (sig != null ? sig.ToString() : "") + ")");
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}
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}
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public void GenerateDecl (StreamWriter sw)
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{
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if (!Initialize ())
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return;
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if (elem.HasAttribute("shared"))
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return;
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if (is_get || is_set)
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{
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Method comp = GetComplement ();
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if (comp != null && comp.Validate () && is_set)
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return;
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sw.Write("\t\t");
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GenerateDeclCommon (sw, null);
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sw.Write("\t\t\t");
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sw.Write ((is_get) ? "get;" : "set;");
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if (comp != null && comp.is_set)
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sw.WriteLine (" set;");
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else
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sw.WriteLine ();
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sw.WriteLine ("\t\t}");
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}
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else
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{
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sw.Write("\t\t");
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GenerateDeclCommon (sw, null);
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sw.WriteLine (";");
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}
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Statistics.MethodCount++;
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}
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public void GenerateImport (StreamWriter sw)
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{
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string import_sig = IsShared ? "" : container_type.MarshalType + " raw";
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import_sig += !IsShared && parms != null ? ", " : "";
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import_sig += isig.ToString();
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sw.WriteLine("\t\t[DllImport(\"" + libname + "\")]");
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if (m_ret.StartsWith ("[return:"))
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sw.WriteLine("\t\t" + m_ret + " static extern " + safety + s_ret + " " + cname + "(" + import_sig + ");");
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else
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sw.WriteLine("\t\tstatic extern " + safety + m_ret + " " + cname + "(" + import_sig + ");");
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sw.WriteLine();
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}
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public void Generate (GenerationInfo gen_info, ClassBase implementor)
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{
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Method comp = null;
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if (!Initialize ())
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return;
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if (implementor != null && elem.HasAttribute("shared"))
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return;
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/* we are generated by the get Method, if there is one */
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if (is_set || is_get)
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{
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if (!elem.HasAttribute("new_flag") && container_type.GetPropertyRecursively (Name.Substring (3)) != null)
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return;
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comp = GetComplement ();
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if (comp != null && comp.Validate () && is_set && parms.AccessorReturnType == comp.s_ret)
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return;
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if (comp != null && is_set && parms.AccessorReturnType != comp.s_ret)
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{
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is_set = false;
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call = "(Handle, " + body.GetCallString (false) + ")";
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comp = null;
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}
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/* some setters take more than one arg */
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if (comp != null && !comp.is_set)
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comp = null;
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}
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GenerateImport (gen_info.Writer);
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if (comp != null && s_ret == comp.parms.AccessorReturnType)
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comp.GenerateImport (gen_info.Writer);
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gen_info.Writer.Write("\t\t");
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if (protection != "")
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gen_info.Writer.Write("{0} ", protection);
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GenerateDeclCommon (gen_info.Writer, implementor);
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if (is_get || is_set)
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{
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gen_info.Writer.Write ("\t\t\t");
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gen_info.Writer.Write ((is_get) ? "get" : "set");
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GenerateBody (gen_info, "\t");
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}
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else
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GenerateBody (gen_info, "");
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if (is_get || is_set)
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{
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if (comp != null && s_ret == comp.parms.AccessorReturnType)
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{
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gen_info.Writer.WriteLine ();
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gen_info.Writer.Write ("\t\t\tset");
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comp.GenerateBody (gen_info, "\t");
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}
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gen_info.Writer.WriteLine ();
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gen_info.Writer.WriteLine ("\t\t}");
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}
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else
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gen_info.Writer.WriteLine();
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gen_info.Writer.WriteLine();
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Statistics.MethodCount++;
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}
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public void GenerateBody (GenerationInfo gen_info, string indent)
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{
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StreamWriter sw = gen_info.Writer;
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sw.WriteLine(" {");
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if (IsAccessor)
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body.InitAccessor (sw, sig, indent);
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body.Initialize(gen_info, is_get, is_set, indent);
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SymbolTable table = SymbolTable.Table;
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IGeneratable ret_igen = table [rettype];
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sw.Write(indent + "\t\t\t");
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if (m_ret == "void") {
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sw.WriteLine(cname + call + ";");
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} else if (ret_igen is ObjectGen || ret_igen is OpaqueGen) {
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sw.WriteLine(m_ret + " raw_ret = " + cname + call + ";");
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sw.WriteLine(indent +"\t\t\t" + s_ret + " ret;");
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sw.WriteLine(indent + "\t\t\tif (raw_ret == IntPtr.Zero)");
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sw.WriteLine(indent + "\t\t\t\tret = null;");
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sw.WriteLine(indent + "\t\t\telse");
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sw.WriteLine(indent +"\t\t\t\tret = " + table.FromNativeReturn(rettype, "raw_ret") + ";");
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} else if (ret_igen is CustomMarshalerGen) {
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sw.WriteLine(s_ret + " ret = " + cname + call + ";");
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} else {
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sw.WriteLine(m_ret + " raw_ret = " + cname + call + ";");
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sw.Write(indent + "\t\t\t");
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string raw_parms = "raw_ret";
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if (element_type != null)
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raw_parms += ", typeof (" + element_type + ")";
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sw.WriteLine(s_ret + " ret = " + table.FromNativeReturn(rettype, raw_parms) + ";");
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}
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body.Finish (sw, indent);
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body.HandleException (sw, indent);
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if (is_get && parms != null)
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sw.WriteLine (indent + "\t\t\treturn " + parms.AccessorName + ";");
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else if (m_ret != "void")
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sw.WriteLine (indent + "\t\t\treturn ret;");
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else if (IsAccessor)
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body.FinishAccessor (sw, sig, indent);
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sw.Write(indent + "\t\t}");
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}
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bool IsAccessor {
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get {
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return s_ret == "void" && sig.IsAccessor;
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}
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}
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}
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}
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