/*
***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2001-2002 Benoit Cerrina <b.cerrina@wanadoo.fr>
* Copyright (C) 2001-2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
* Copyright (C) 2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
* Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
* Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
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* use your version of this file under the terms of the CPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
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***** END LICENSE BLOCK *****/
package org.jruby.ast;
import org.jruby.Ruby;
import org.jruby.RubyString;
import org.jruby.ast.types.ILiteralNode;
import org.jruby.ast.visitor.NodeVisitor;
import org.jruby.evaluator.Instruction;
import org.jruby.lexer.yacc.ISourcePosition;
import org.jruby.runtime.Block;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.ByteList;
/**
* A string which contains some dynamic elements which needs to be evaluated (introduced by #).
*/
public class DStrNode extends ListNode implements ILiteralNode {
public DStrNode(ISourcePosition position) {
super(position, NodeType.DSTRNODE);
}
/**
* Accept for the visitor pattern.
* @param iVisitor the visitor
**/
@Override
public Instruction accept(NodeVisitor iVisitor) {
return iVisitor.visitDStrNode(this);
}
@Override
public IRubyObject interpret(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock) {
return buildDynamicString(runtime, context, self, aBlock, this);
}
public static RubyString buildDynamicString(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock, ListNode list) {
RubyString string = runtime.newString(new ByteList());
int size = list.size();
for (int i = 0; i < size; i++) {
DStrNode.appendToString(runtime, context, self, aBlock, string, list.get(i));
}
return string;
}
public static void appendToString(Ruby runtime, ThreadContext context, IRubyObject self, Block aBlock, RubyString string, Node node) {
if (node instanceof StrNode) {
string.getByteList().append(((StrNode) node).getValue());
} else {
string.append(node.interpret(runtime, context, self, aBlock));
}
}
}