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/* valaerrordomain.vala
*
* Copyright (C) 2008-2010 Jürg Billeter
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Jürg Billeter <j@bitron.ch>
*/
using GLib;
/**
* Represents an error domain declaration in the source code.
*/
public class Vala.ErrorDomain : TypeSymbol {
private List<ErrorCode> codes = new ArrayList<ErrorCode> ();
private List<Method> methods = new ArrayList<Method> ();
/**
* Creates a new error domain.
*
* @param name type name
* @param source_reference reference to source code
* @return newly created error domain
*/
public ErrorDomain (string name, SourceReference? source_reference = null, Comment? comment = null) {
base (name, source_reference, comment);
}
/**
* Appends the specified code to the list of error codes.
*
* @param ecode an error code
*/
public void add_code (ErrorCode ecode) {
codes.add (ecode);
scope.add (ecode.name, ecode);
}
/**
* Adds the specified method as a member to this error domain.
*
* @param m a method
*/
public override void add_method (Method m) {
if (m is CreationMethod) {
Report.error (m.source_reference, "construction methods may only be declared within classes and structs");
m.error = true;
return;
}
if (m.binding == MemberBinding.INSTANCE) {
m.this_parameter = new Parameter ("this", new ErrorType (this, null), m.source_reference);
m.scope.add (m.this_parameter.name, m.this_parameter);
}
methods.add (m);
scope.add (m.name, m);
}
/**
* Returns the list of error codes.
*
* @return list of error codes
*/
public unowned List<ErrorCode> get_codes () {
return codes;
}
/**
* Returns the list of methods.
*
* @return list of methods
*/
public unowned List<Method> get_methods () {
return methods;
}
public override void accept (CodeVisitor visitor) {
visitor.visit_error_domain (this);
}
public override void accept_children (CodeVisitor visitor) {
foreach (ErrorCode ecode in codes) {
ecode.accept (visitor);
}
foreach (Method m in methods) {
m.accept (visitor);
}
}
public override bool is_reference_type () {
return false;
}
public override bool check (CodeContext context) {
if (checked) {
return !error;
}
checked = true;
if (codes.size <= 0) {
Report.error (source_reference, "Error domain `%s' requires at least one code", get_full_name ());
error = true;
return false;
}
foreach (ErrorCode ecode in codes) {
ecode.check (context);
}
foreach (Method m in methods) {
if (m.binding == MemberBinding.INSTANCE) {
if (external_package) {
Report.warning (m.source_reference, "Instance methods are not supported in error domains yet");
} else {
Report.error (m.source_reference, "Instance methods are not supported in error domains yet");
}
error = true;
}
m.check (context);
}
return !error;
}
}
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