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/* valaforstatement.vala
*
* Copyright (C) 2006-2008 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;
using Gee;
/**
* Represents a for iteration statement in the source code.
*/
public class Vala.ForStatement : CodeNode, Statement {
/**
* Specifies the loop condition.
*/
public Expression? condition {
get {
return _condition;
}
set construct {
_condition = value;
if (_condition != null) {
_condition.parent_node = this;
}
}
}
/**
* Specifies the loop body.
*/
public Block body {
get {
return _body;
}
set {
_body = value;
_body.parent_node = this;
}
}
private Gee.List<Expression> initializer = new ArrayList<Expression> ();
private Gee.List<Expression> iterator = new ArrayList<Expression> ();
private Expression _condition;
private Block _body;
/**
* Creates a new for statement.
*
* @param cond loop condition
* @param body loop body
* @param source_reference reference to source code
* @return newly created for statement
*/
public ForStatement (construct Expression condition, construct Block body, construct SourceReference source_reference = null) {
}
/**
* Appends the specified expression to the list of initializers.
*
* @param init an initializer expression
*/
public void add_initializer (Expression init) {
init.parent_node = this;
initializer.add (init);
}
/**
* Returns a copy of the list of initializers.
*
* @return initializer list
*/
public Collection<Expression> get_initializer () {
return new ReadOnlyCollection<Expression> (initializer);
}
/**
* Appends the specified expression to the iterator.
*
* @param iter an iterator expression
*/
public void add_iterator (Expression iter) {
iter.parent_node = this;
iterator.add (iter);
}
/**
* Returns a copy of the iterator.
*
* @return iterator
*/
public Collection<Expression> get_iterator () {
return new ReadOnlyCollection<Expression> (iterator);
}
public override void accept (CodeVisitor visitor) {
visitor.visit_for_statement (this);
}
public override void accept_children (CodeVisitor visitor) {
foreach (Expression init_expr in initializer) {
init_expr.accept (visitor);
visitor.visit_end_full_expression (init_expr);
}
if (condition != null) {
condition.accept (visitor);
visitor.visit_end_full_expression (condition);
}
foreach (Expression it_expr in iterator) {
it_expr.accept (visitor);
visitor.visit_end_full_expression (it_expr);
}
body.accept (visitor);
}
public override void replace_expression (Expression old_node, Expression new_node) {
if (condition == old_node) {
condition = new_node;
return;
}
for (int i = 0; i < initializer.size; i++) {
if (initializer[i] == old_node) {
initializer[i] = new_node;
return;
}
}
for (int i = 0; i < iterator.size; i++) {
if (iterator[i] == old_node) {
iterator[i] = new_node;
return;
}
}
}
}
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