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/* valatemplate.vala
*
* Copyright (C) 2009-2010 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>
*/
public class Vala.Template : Expression {
private List<Expression> expression_list = new ArrayList<Expression> ();
public Template (SourceReference? source_reference = null) {
this.source_reference = source_reference;
}
public override void accept (CodeVisitor visitor) {
visitor.visit_template (this);
}
public override void accept_children (CodeVisitor visitor) {
foreach (var expr in expression_list) {
expr.accept (visitor);
}
}
public void add_expression (Expression expr) {
expression_list.add (expr);
expr.parent_node = this;
}
public unowned List<Expression> get_expressions () {
return expression_list;
}
public override bool is_pure () {
return false;
}
Expression stringify (Expression expr) {
if (expr is StringLiteral) {
return expr;
} else {
return new MethodCall (new MemberAccess (expr, "to_string", expr.source_reference), expr.source_reference);
}
}
public override void replace_expression (Expression old_node, Expression new_node) {
int index = expression_list.index_of (old_node);
if (index >= 0) {
expression_list[index] = new_node;
new_node.parent_node = this;
}
}
public override bool check (CodeContext context) {
if (checked) {
return !error;
}
checked = true;
Expression expr;
if (expression_list.size == 0) {
expr = new StringLiteral ("\"\"", source_reference);
} else {
expr = stringify (expression_list[0]);
if (expression_list.size > 1) {
var concat = new MethodCall (new MemberAccess (expr, "concat", source_reference), source_reference);
for (int i = 1; i < expression_list.size; i++) {
concat.add_argument (stringify (expression_list[i]));
}
expr = concat;
}
}
expr.target_type = target_type;
context.analyzer.replaced_nodes.add (this);
parent_node.replace_expression (this, expr);
return expr.check (context);
}
}
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