GtkSharp/generator/Parameters.cs

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// GtkSharp.Generation.Parameters.cs - The Parameters Generation Class.
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// (c) 2001-2002 Mike Kestner
namespace GtkSharp.Generation {
using System;
using System.IO;
using System.Xml;
public class Parameters {
private XmlElement elem;
private string import_sig;
private string call_string;
private string signature;
private string signature_types;
public Parameters (XmlElement elem) {
this.elem = elem;
}
public string CallString {
get {
return call_string;
}
}
public string ImportSig {
get {
return import_sig;
}
}
public string Signature {
get {
return signature;
}
}
public string SignatureTypes {
get {
return signature_types;
}
}
public bool Validate ()
{
signature_types = signature = import_sig = call_string = "";
bool need_sep = false;
foreach (XmlNode parm in elem.ChildNodes) {
if (parm.Name != "parameter") {
continue;
}
XmlElement p_elem = (XmlElement) parm;
string type = p_elem.GetAttribute("type");
string cs_type = SymbolTable.GetCSType(type);
string m_type = SymbolTable.GetMarshalType(type);
string name = MangleName(p_elem.GetAttribute("name"));
string call_parm = SymbolTable.CallByName(type, name);
if ((cs_type == "") || (name == "") ||
(m_type == "") || (call_parm == "")) {
Console.Write("Name: " + name + " Type: " + type + " ");
return false;
}
if (p_elem.HasAttribute("array")) {
cs_type += "[]";
m_type += "[]";
}
if (need_sep) {
call_string += ", ";
import_sig += ", ";
if (type != "GError**")
{
signature += ", ";
signature_types += ":";
}
} else {
need_sep = true;
}
if (p_elem.HasAttribute("pass_as")) {
signature += p_elem.GetAttribute("pass_as") + " ";
}
if (type == "GError**") {
call_string += "out ";
import_sig += "out ";
} else {
signature += (cs_type + " " + name);
signature_types += cs_type;
}
call_string += call_parm;
import_sig += (m_type + " " + name);
}
return true;
}
public void Initialize (StreamWriter sw, bool is_get)
{
string name = "";
foreach (XmlNode parm in elem.ChildNodes) {
if (parm.Name != "parameter") {
continue;
}
XmlElement p_elem = (XmlElement) parm;
string type = SymbolTable.GetCSType(p_elem.GetAttribute ("type"));
name = MangleName(p_elem.GetAttribute("name"));
if (is_get) {
sw.WriteLine ("\t\t\t" + type + " " + name + ";");
}
if (is_get || (p_elem.HasAttribute("pass_as") && p_elem.GetAttribute ("pass_as") == "out")) {
sw.WriteLine("\t\t\t" + name + " = new " + type + "();");
}
}
if (ThrowsException)
sw.WriteLine ("\t\t\tIntPtr error;");
}
public void HandleException (StreamWriter sw)
{
if (!ThrowsException)
return;
sw.WriteLine ("\t\t\tif (error != IntPtr.Zero) throw new GLib.GException (error);");
}
public bool IsAccessor {
get {
int length = 0;
string pass_as = "";
foreach (XmlNode parm in elem.ChildNodes) {
if (parm.Name != "parameter") {
continue;
}
XmlElement p_elem = (XmlElement) parm;
length++;
if (length > 1)
return false;
if (p_elem.HasAttribute("pass_as"))
pass_as = p_elem.GetAttribute("pass_as");
}
return (length == 1 && pass_as == "out");
}
}
public bool ThrowsException {
get {
if ((elem.ChildNodes == null) || (elem.ChildNodes.Count < 1))
return false;
XmlElement p_elem = (XmlElement) elem.ChildNodes[elem.ChildNodes.Count - 1];
string type = p_elem.GetAttribute("type");
return (type == "GError**");
}
}
public string AccessorReturnType {
get {
foreach (XmlNode parm in elem.ChildNodes) {
if (parm.Name != "parameter")
continue;
XmlElement p_elem = (XmlElement) parm;
return SymbolTable.GetCSType(p_elem.GetAttribute ("type"));
}
return null;
}
}
public string AccessorName {
get {
foreach (XmlNode parm in elem.ChildNodes) {
if (parm.Name != "parameter")
continue;
XmlElement p_elem = (XmlElement) parm;
return MangleName (p_elem.GetAttribute("name"));
}
return null;
}
}
private string MangleName(string name)
{
switch (name) {
case "string":
return "str1ng";
case "event":
return "evnt";
case "object":
return "objekt";
default:
break;
}
return name;
}
}
}