/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.statement;
import com.caucho.quercus.Location;
import com.caucho.quercus.env.BreakValue;
import com.caucho.quercus.env.ContinueValue;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.expr.AbstractVarExpr;
import com.caucho.quercus.expr.Expr;
import java.util.Iterator;
import java.util.Map;
/**
* Represents a foreach statement.
*/
public class ForeachStatement
extends Statement
{
protected final Expr _objExpr;
protected final AbstractVarExpr _key;
protected final AbstractVarExpr _value;
protected final boolean _isRef;
protected final Statement _block;
protected final String _label;
public ForeachStatement(Location location,
Expr objExpr,
AbstractVarExpr key,
AbstractVarExpr value,
boolean isRef,
Statement block,
String label)
{
super(location);
_objExpr = objExpr;
_key = key;
_value = value;
_isRef = isRef;
_block = block;
_label = label;
block.setParent(this);
}
@Override
public boolean isLoop()
{
return true;
}
public Value execute(Env env)
{
Value origObj = _objExpr.eval(env);
Value obj = origObj.copy(); // php/0669
if (_key == null && ! _isRef) {
Iterator<Value> iter = obj.getValueIterator(env);
while (iter.hasNext()) {
Value value = iter.next();
value = value.copy(); // php/0662
_value.evalAssignValue(env, value);
Value result = _block.execute(env);
if (result == null) {
}
else if (result instanceof ContinueValue) {
ContinueValue conValue = (ContinueValue) result;
int target = conValue.getTarget();
if (target > 1) {
return new ContinueValue(target - 1);
}
}
else if (result instanceof BreakValue) {
BreakValue breakValue = (BreakValue) result;
int target = breakValue.getTarget();
if (target > 1)
return new BreakValue(target - 1);
else
break;
}
else
return result;
}
return null;
} else if (_isRef) {
Iterator<Value> iter = obj.getKeyIterator(env);
while (iter.hasNext()) {
Value key = iter.next();
if (_key != null)
_key.evalAssignValue(env, key);
Value value = origObj.getVar(key);
// php/0667
_value.evalAssignRef(env, value);
Value result = _block.execute(env);
if (result == null) {
}
else if (result instanceof ContinueValue) {
ContinueValue conValue = (ContinueValue) result;
int target = conValue.getTarget();
if (target > 1) {
return new ContinueValue(target - 1);
}
}
else if (result instanceof BreakValue) {
BreakValue breakValue = (BreakValue) result;
int target = breakValue.getTarget();
if (target > 1)
return new BreakValue(target - 1);
else
break;
}
else
return result;
}
}
else {
Iterator<Map.Entry<Value,Value>> iter = obj.getIterator(env);
while (iter.hasNext()) {
Map.Entry<Value, Value> entry = iter.next();
Value key = entry.getKey();
Value value = entry.getValue();
value = value.copy(); // php/066w
_key.evalAssignValue(env, key);
_value.evalAssignValue(env, value);
Value result = _block.execute(env);
if (result == null) {
}
else if (result instanceof ContinueValue) {
ContinueValue conValue = (ContinueValue) result;
int target = conValue.getTarget();
if (target > 1) {
return new ContinueValue(target - 1);
}
}
else if (result instanceof BreakValue) {
BreakValue breakValue = (BreakValue) result;
int target = breakValue.getTarget();
if (target > 1)
return new BreakValue(target - 1);
else
break;
}
else
return result;
}
}
return null;
}
}