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/* valaifstatement.vala
*
* Copyright (C) 2006-2007 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 if selection statement in the source code.
*/
public class Vala.IfStatement : CodeNode, Statement {
/**
* The boolean condition to evaluate.
*/
public Expression! condition {
get {
return _condition;
}
set construct {
_condition = value;
_condition.parent_node = this;
}
}
/**
* The statement to be evaluated if the condition holds.
*/
public Block! true_statement { get; set construct; }
/**
* The optional statement to be evaluated if the condition doesn't hold.
*/
public Block false_statement { get; set construct; }
private Expression! _condition;
/**
* Creates a new if statement.
*
* @param cond a boolean condition
* @param true_stmt statement to be evaluated if condition is true
* @param false_stmt statement to be evaluated if condition is false
* @return newly created if statement
*/
public IfStatement (Expression! cond, Block! true_stmt, Block false_stmt, SourceReference source) {
condition = cond;
true_statement = true_stmt;
false_statement = false_stmt;
source_reference = source;
}
public override void accept (CodeVisitor! visitor) {
condition.accept (visitor);
visitor.visit_end_full_expression (condition);
true_statement.accept (visitor);
if (false_statement != null) {
false_statement.accept (visitor);
}
visitor.visit_if_statement (this);
}
public override void replace (CodeNode! old_node, CodeNode! new_node) {
if (condition == old_node) {
condition = (Expression) new_node;
}
}
}
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