/*
* Copyright (c) 2003 The Visigoth Software Society. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Visigoth Software Society (http://www.visigoths.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
* project contributors may be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact visigoths@visigoths.org.
*
* 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
* nor may "FreeMarker" or "Visigoth" appear in their names
* without prior written permission of the Visigoth Software Society.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE VISIGOTH SOFTWARE SOCIETY OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Visigoth Software Society. For more
* information on the Visigoth Software Society, please see
* http://www.visigoths.org/
*/
package freemarker.core;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import freemarker.template.*;
import freemarker.template.utility.Collections12;
import java.io.IOException;
final class ListLiteral extends Expression {
final ArrayList values;
ListLiteral(ArrayList values) {
this.values = values;
values.trimToSize();
}
TemplateModel _getAsTemplateModel(Environment env) throws TemplateException {
SimpleSequence list = new SimpleSequence(values.size());
for (Iterator it = values.iterator(); it.hasNext();) {
Expression exp = (Expression) it.next();
TemplateModel tm = exp.getAsTemplateModel(env);
assertNonNull(tm, exp, env);
list.add(tm);
}
return list;
}
/**
* For the benefit of method calls, return the list of arguments as a list
* of values.
*/
List getValueList(Environment env) throws TemplateException {
int size = values.size();
switch(size) {
case 0: {
return Collections.EMPTY_LIST;
}
case 1: {
return Collections12.singletonList(((Expression)values.get(0)).getStringValue(env));
}
default: {
List result = new ArrayList(values.size());
for (ListIterator iterator = values.listIterator(); iterator.hasNext();) {
Expression exp = (Expression)iterator.next();
result.add(exp.getStringValue(env));
}
return result;
}
}
}
/**
* For the benefit of extended method calls, return the list of arguments as a
* list of template models.
*/
List getModelList(Environment env) throws TemplateException {
int size = values.size();
switch(size) {
case 0: {
return Collections.EMPTY_LIST;
}
case 1: {
return Collections12.singletonList(((Expression)values.get(0)).getAsTemplateModel(env));
}
default: {
List result = new ArrayList(values.size());
for (ListIterator iterator = values.listIterator(); iterator.hasNext();) {
Expression exp = (Expression)iterator.next();
result.add(exp.getAsTemplateModel(env));
}
return result;
}
}
}
public String getCanonicalForm() {
StringBuffer buf = new StringBuffer("[");
int size = values.size();
for (int i = 0; i<size; i++) {
Expression value = (Expression) values.get(i);
buf.append(value.getCanonicalForm());
if (i != size-1) {
buf.append(",");
}
}
buf.append("]");
return buf.toString();
}
boolean isLiteral() {
if (constantValue != null) {
return true;
}
for (int i = 0; i<values.size(); i++) {
Expression exp = (Expression) values.get(i);
if (!exp.isLiteral()) {
return false;
}
}
return true;
}
// A hacky routine used by VisitNode and RecurseNode
TemplateSequenceModel evaluateStringsToNamespaces(Environment env) throws TemplateException {
TemplateSequenceModel val = (TemplateSequenceModel) getAsTemplateModel(env);
SimpleSequence result = new SimpleSequence(val.size());
for (int i=0; i<values.size(); i++) {
if (values.get(i) instanceof StringLiteral) {
String s = ((StringLiteral) values.get(i)).getAsString();
try {
Environment.Namespace ns = env.importLib(s, null);
result.add(ns);
}
catch (IOException ioe) {
throw new TemplateException("Could not import library '" + s + "', " + ioe.getMessage(), env);
}
}
else {
result.add(val.get(i));
}
}
return result;
}
Expression _deepClone(String name, Expression subst) {
ArrayList clonedValues = (ArrayList)values.clone();
for (ListIterator iter = clonedValues.listIterator(); iter.hasNext();) {
iter.set(((Expression)iter.next()).deepClone(name, subst));
}
return new ListLiteral(clonedValues);
}
}