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/* valayieldstatement.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>
*/
/**
* Represents a yield statement in the source code.
*/
public class Vala.YieldStatement : CodeNode, Statement {
/**
* Creates a new yield statement.
*
* @param source_reference reference to source code
* @return newly created yield statement
*/
public YieldStatement (SourceReference? source_reference = null) {
this.source_reference = source_reference;
}
public override void accept (CodeVisitor visitor) {
visitor.visit_yield_statement (this);
}
public override bool check (CodeContext context) {
if (checked) {
return !error;
}
checked = true;
if (context.analyzer.current_method == null || !context.analyzer.current_method.coroutine) {
error = true;
Report.error (source_reference, "yield statement not available outside async method");
}
return !error;
}
public override void emit (CodeGenerator codegen) {
codegen.visit_yield_statement (this);
}
}
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