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/* valatuple.vala
*
* Copyright (C) 2006-2010 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 a fixed-length sequence of expressions in the source code.
*/
public class Vala.Tuple : Expression {
private List<Expression> expression_list = new ArrayList<Expression> ();
public Tuple (SourceReference? source_reference = null) {
this.source_reference = source_reference;
}
public override void accept_children (CodeVisitor visitor) {
foreach (Expression expr in expression_list) {
expr.accept (visitor);
}
}
public override void accept (CodeVisitor visitor) {
visitor.visit_tuple (this);
visitor.visit_expression (this);
}
public void add_expression (Expression expr) {
expression_list.add (expr);
}
public List<Expression> get_expressions () {
return expression_list;
}
public override bool is_pure () {
return false;
}
public override void replace_expression (Expression old_node, Expression new_node) {
for (int i = 0; i < expression_list.size; i++) {
if (expression_list[i] == old_node) {
expression_list[i] = new_node;
}
}
}
public override bool check (SemanticAnalyzer analyzer) {
if (checked) {
return !error;
}
checked = true;
if (analyzer.context.profile != Profile.DOVA) {
Report.error (source_reference, "tuples are not supported");
error = true;
return false;
}
value_type = new ObjectType ((Class) analyzer.context.root.scope.lookup ("Dova").scope.lookup ("Tuple"));
value_type.value_owned = true;
foreach (var expr in expression_list) {
if (!expr.check (analyzer)) {
return false;
}
value_type.add_type_argument (expr.value_type.copy ());
}
return !error;
}
public override void emit (CodeGenerator codegen) {
foreach (Expression expr in expression_list) {
expr.emit (codegen);
}
codegen.visit_tuple (this);
codegen.visit_expression (this);
}
}
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