BuiltInExpression.java
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freemarker.core.ast |
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FreeMarker |
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/*
* Copyright (c) 2007 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.ast;
import java.util.HashMap;
import freemarker.template.*;
import freemarker.core.Environment;
import freemarker.core.InvalidReferenceException;
import freemarker.core.builtins.*;
public class BuiltInExpression extends Expression implements Cloneable {
static final HashMap<String, BuiltIn> knownBuiltins = new HashMap<String, BuiltIn>();
{
knownBuiltins.put("c", new cBI());
knownBuiltins.put("size", new sizeBI());
knownBuiltins.put("string", new stringBI());
knownBuiltins.put("eval", new evalBI());
knownBuiltins.put("new", new newBI());
knownBuiltins.put("interpret", new interpretBI());
knownBuiltins.put("resolve", new resolveBI());
knownBuiltins.put("use_defaults", new Curry());
NumericalCast numericalCast = new NumericalCast();
knownBuiltins.put("byte", numericalCast);
knownBuiltins.put("double", numericalCast);
knownBuiltins.put("float", numericalCast);
knownBuiltins.put("int", numericalCast);
knownBuiltins.put("long", numericalCast);
knownBuiltins.put("short", numericalCast);
knownBuiltins.put("floor", numericalCast);
knownBuiltins.put("ceiling", numericalCast);
knownBuiltins.put("round", numericalCast);
StringTransformations stringTransformations = new StringTransformations();
knownBuiltins.put("capitalize", stringTransformations);
knownBuiltins.put("lower_case", stringTransformations);
knownBuiltins.put("upper_case", stringTransformations);
knownBuiltins.put("cap_first", stringTransformations);
knownBuiltins.put("uncap_first", stringTransformations);
knownBuiltins.put("j_string", stringTransformations);
knownBuiltins.put("js_string", stringTransformations);
knownBuiltins.put("chop_linebreak", stringTransformations);
knownBuiltins.put("trim", stringTransformations);
knownBuiltins.put("html", stringTransformations);
knownBuiltins.put("rtf", stringTransformations);
knownBuiltins.put("xml", stringTransformations);
knownBuiltins.put("xhtml", stringTransformations);
knownBuiltins.put("web_safe", stringTransformations);
TypeChecks typeChecks = new TypeChecks();
knownBuiltins.put("is_boolean", typeChecks);
knownBuiltins.put("is_collection", typeChecks);
knownBuiltins.put("is_date", typeChecks);
knownBuiltins.put("is_enumerable", typeChecks);
knownBuiltins.put("is_hash", typeChecks);
knownBuiltins.put("is_hash_ex", typeChecks);
knownBuiltins.put("is_indexable", typeChecks);
knownBuiltins.put("is_directive", typeChecks);
knownBuiltins.put("is_method", typeChecks);
knownBuiltins.put("is_null", typeChecks);
knownBuiltins.put("is_number", typeChecks);
knownBuiltins.put("is_macro", typeChecks);
knownBuiltins.put("is_node", typeChecks);
knownBuiltins.put("is_sequence", typeChecks);
knownBuiltins.put("is_string", typeChecks);
knownBuiltins.put("is_transform", typeChecks);
StringFunctions stringFunctions = new StringFunctions();
knownBuiltins.put("index_of", stringFunctions);
knownBuiltins.put("last_index_of", stringFunctions);
knownBuiltins.put("contains", stringFunctions);
knownBuiltins.put("number", stringFunctions);
knownBuiltins.put("left_pad", stringFunctions);
knownBuiltins.put("right_pad", stringFunctions);
knownBuiltins.put("length", stringFunctions);
knownBuiltins.put("replace", stringFunctions);
knownBuiltins.put("split", stringFunctions);
knownBuiltins.put("groups", stringFunctions);
knownBuiltins.put("matches", stringFunctions);
knownBuiltins.put("starts_with", stringFunctions);
knownBuiltins.put("ends_with", stringFunctions);
knownBuiltins.put("substring", stringFunctions);
knownBuiltins.put("word_list", stringFunctions);
knownBuiltins.put("url", stringFunctions);
NodeFunctions nodeFunctions = new NodeFunctions();
knownBuiltins.put("parent", nodeFunctions);
knownBuiltins.put("children", nodeFunctions);
knownBuiltins.put("node_name", nodeFunctions);
knownBuiltins.put("node_type", nodeFunctions);
knownBuiltins.put("node_namespace", nodeFunctions);
knownBuiltins.put("root", nodeFunctions);
knownBuiltins.put("ancestors", nodeFunctions);
SequenceFunctions sequenceFunctions = new SequenceFunctions();
knownBuiltins.put("first", sequenceFunctions);
knownBuiltins.put("last", sequenceFunctions);
knownBuiltins.put("reverse", sequenceFunctions);
knownBuiltins.put("sort", sequenceFunctions);
knownBuiltins.put("sort_by", sequenceFunctions);
knownBuiltins.put("chunk", sequenceFunctions);
knownBuiltins.put("seq_contains", sequenceFunctions);
knownBuiltins.put("seq_index_of", sequenceFunctions);
knownBuiltins.put("seq_last_index_of", sequenceFunctions);
MacroBuiltins macroBuiltins = new MacroBuiltins();
knownBuiltins.put("scope", macroBuiltins);
knownBuiltins.put("namespace", macroBuiltins);
HashBuiltins hashBuiltins = new HashBuiltins();
knownBuiltins.put("keys", hashBuiltins);
knownBuiltins.put("values", hashBuiltins);
DateTime dateTime = new DateTime();
knownBuiltins.put("date", dateTime);
knownBuiltins.put("time", dateTime);
knownBuiltins.put("datetime", dateTime);
ExistenceBIs existenceBIs = new ExistenceBIs();
knownBuiltins.put("is_defined", existenceBIs);
knownBuiltins.put("if_exists", existenceBIs);
knownBuiltins.put("exists", existenceBIs);
knownBuiltins.put("default", existenceBIs);
knownBuiltins.put("has_content", existenceBIs);
knownBuiltins.put("source", new sourceBI());
}
Expression target;
String key;
BuiltIn bi;
boolean protectTargetEvaluation, isExistenceBI;
public BuiltInExpression(Expression target, String key) {
this.target = target;
target.parent = this;
this.key = key.intern();
this.isExistenceBI = this.key == "exists"
|| this.key == "if_exists"
|| this.key == "default"
|| this.key == "has_content"
|| this.key == "is_defined";
this.protectTargetEvaluation = isExistenceBI && target instanceof ParentheticalExpression;
}
public BuiltIn findImplementation() {
return knownBuiltins.get(key);
}
TemplateModel _getAsTemplateModel(Environment env) throws TemplateException {
if (bi == null) bi = knownBuiltins.get(key); // WHy is this necessary? (REVISIT)
TemplateModel targetModel = null;
if (key != "source") try { // If this is the source built-in, we don't try to evaluate.
targetModel = target.getAsTemplateModel(env);
} catch (InvalidReferenceException ire) {
if (!protectTargetEvaluation) throw ire;
}
return bi.get(targetModel, key, env, this);
}
public Expression getTarget() {
return target;
}
public String getName() {
return key;
}
boolean isLiteral() {
return false;
}
/*
@Override
Expression _deepClone(String name, Expression subst) {
findImplementation();
try {
BuiltInExpression clone = (BuiltInExpression) this.clone();
clone.target = target.deepClone(name, subst);
clone.bi = knownBuiltins.get(key);
return clone;
}
catch (CloneNotSupportedException e) {
throw new InternalError();
}
}*/
Expression _deepClone(String name, Expression subst) {
return new BuiltInExpression(target.deepClone(name, subst), key);
}
}
The table below shows all metrics for BuiltInExpression.java.




