Release 0.41.92
[vala-gnome.git] / vala / valadeletestatement.vala
blobe12b5c4e1f38050564cf1c0f574c3f1f937e94b1
1 /* valadeletestatement.vala
3 * Copyright (C) 2008-2011 Jürg Billeter
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 * Author:
20 * Jürg Billeter <j@bitron.ch>
23 /**
24 * Represents a delete statement e.g. "delete a".
26 public class Vala.DeleteStatement : CodeNode, Statement {
27 /**
28 * Expression representing the instance to be freed.
30 public Expression expression {
31 get { return _expression; }
32 set {
33 _expression = value;
34 _expression.parent_node = this;
38 private Expression _expression;
40 public DeleteStatement (Expression expression, SourceReference? source_reference = null) {
41 this.expression = expression;
42 this.source_reference = source_reference;
45 public override void accept (CodeVisitor visitor) {
46 visitor.visit_delete_statement (this);
49 public override void accept_children (CodeVisitor visitor) {
50 expression.accept (visitor);
53 public override bool check (CodeContext context) {
54 if (checked) {
55 return !error;
58 checked = true;
60 if (!expression.check (context)) {
61 // if there was an error in the inner expression, skip this check
62 return false;
65 if (!(expression.value_type is PointerType) && !(expression.value_type is ArrayType)) {
66 error = true;
67 Report.error (source_reference, "delete operator not supported for `%s'".printf (expression.value_type.to_string ()));
70 return !error;
73 public override void emit (CodeGenerator codegen) {
74 expression.emit (codegen);
76 codegen.visit_delete_statement (this);