/*
* 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.program;
import com.caucho.quercus.QuercusContext;
import com.caucho.quercus.QuercusException;
import com.caucho.quercus.env.*;
import com.caucho.quercus.function.AbstractFunction;
import com.caucho.quercus.page.QuercusPage;
import com.caucho.quercus.statement.*;
import com.caucho.vfs.BasicDependencyContainer;
import com.caucho.vfs.Depend;
import com.caucho.vfs.Path;
import com.caucho.vfs.Dependency;
import com.caucho.vfs.PersistentDependency;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.logging.Logger;
import java.util.logging.Level;
/**
* Represents a compiled Quercus program.
*/
public class QuercusProgram {
private static final Logger log
= Logger.getLogger(QuercusProgram.class.getName());
private QuercusContext _quercus;
private QuercusPage _compiledPage;
private QuercusPage _profilePage;
private Path _sourceFile;
private final AtomicBoolean _isCompiling
= new AtomicBoolean();
private boolean _isCompilable = true;
private Exception _compileException;
private HashMap<String,Function> _functionMap;
private HashMap<String,Function> _functionMapLowerCase
= new HashMap<String,Function>();
private ArrayList<Function> _functionList;
private HashMap<String,InterpretedClassDef> _classMap;
private ArrayList<InterpretedClassDef> _classList;
private FunctionInfo _functionInfo;
private Statement _statement;
private ArrayList<PersistentDependency> _dependList
= new ArrayList<PersistentDependency>();
// runtime function list for compilation
private AbstractFunction []_runtimeFunList;
private BasicDependencyContainer _depend
= new BasicDependencyContainer();
private BasicDependencyContainer _topDepend
= new BasicDependencyContainer();
/**
* Creates a new quercus program
*
* @param quercus the owning quercus engine
* @param sourceFile the path to the source file
* @param statement the top-level statement
*/
public QuercusProgram(QuercusContext quercus, Path sourceFile,
HashMap<String,Function> functionMap,
ArrayList<Function> functionList,
HashMap<String,InterpretedClassDef> classMap,
ArrayList<InterpretedClassDef> classList,
FunctionInfo functionInfo,
Statement statement)
{
_quercus = quercus;
_depend.setCheckInterval(quercus.getDependencyCheckInterval());
_topDepend.setCheckInterval(quercus.getDependencyCheckInterval());
_topDepend.add(new PageDependency());
_sourceFile = sourceFile;
if (sourceFile != null)
addDepend(sourceFile);
_functionMap = functionMap;
_functionList = functionList;
for (Map.Entry<String,Function> entry : functionMap.entrySet()) {
_functionMapLowerCase.put(entry.getKey().toLowerCase(),
entry.getValue());
}
_classMap = classMap;
_classList = classList;
_functionInfo = functionInfo;
_statement = statement;
}
/**
* Creates a new quercus program
*
* @param quercus the owning quercus engine
* @param sourceFile the path to the source file
* @param statement the top-level statement
*/
public QuercusProgram(QuercusContext quercus,
Path sourceFile,
QuercusPage page)
{
_quercus = quercus;
_sourceFile = sourceFile;
_compiledPage = page;
_topDepend.setCheckInterval(quercus.getDependencyCheckInterval());
_topDepend.add(new PageDependency());
}
/**
* Returns the engine.
*/
public QuercusContext getPhp()
{
return _quercus;
}
/**
* Returns the source path.
*/
public Path getSourcePath()
{
return _sourceFile;
}
public FunctionInfo getFunctionInfo()
{
return _functionInfo;
}
public Statement getStatement()
{
return _statement;
}
/*
* Start compiling
*/
public boolean startCompiling()
{
return _isCompiling.compareAndSet(false, true);
}
/*
* Set to true if this page is being compiled.
*/
public void finishCompiling()
{
synchronized (this) {
_isCompiling.set(false);
notifyAll();
}
}
/*
* Set to true if this page is being compiled.
*/
public void waitForCompile()
{
synchronized (this) {
if (_isCompiling.get()) {
try {
wait(120000);
} catch (Exception e) {
log.log(Level.WARNING, e.toString(), e);
}
}
}
}
/*
* Returns true if this page is being compiled.
*/
public boolean isCompiling()
{
return _isCompiling.get();
}
/*
* Set to false if page cannot be compiled.
*/
public void setCompilable(boolean isCompilable)
{
_isCompilable = isCompilable;
}
/*
* Returns true if the page can be compiled or it is unknown.
*/
public boolean isCompilable()
{
return _isCompilable;
}
public void setCompileException(Exception e)
{
if (e == null) {
_compileException = null;
return;
}
String msg = e.toString();
// XXX: temp for memory issues
if (msg != null && msg.length() > 4096) {
msg = msg.substring(0, 4096);
}
_compileException = new QuercusException(msg);
}
public Exception getCompileException()
{
return _compileException;
}
/**
* Adds a dependency.
*/
public void addDepend(Path path)
{
Depend depend = new Depend(path);
depend.setRequireSource(_quercus.isRequireSource());
_dependList.add(depend);
_depend.add(depend);
}
public ArrayList<PersistentDependency> getDependencyList()
{
return _dependList;
}
/**
* Returns true if the function is modified.
*/
public boolean isModified()
{
return _topDepend.isModified();
}
/**
* Returns the compiled page.
*/
public QuercusPage getCompiledPage()
{
return _compiledPage;
}
/**
* Sets the compiled page.
*/
public void setCompiledPage(QuercusPage page)
{
_compiledPage = page;
}
/**
* Returns the profiling page.
*/
public QuercusPage getProfilePage()
{
return _profilePage;
}
/**
* Sets the profiling page.
*/
public void setProfilePage(QuercusPage page)
{
_profilePage = page;
}
/**
* Finds a function.
*/
public AbstractFunction findFunction(String name)
{
AbstractFunction fun = _functionMap.get(name);
if (fun != null)
return fun;
if (! _quercus.isStrict())
fun = _functionMapLowerCase.get(name.toLowerCase());
return fun;
}
/**
* Returns the functions.
*/
public Collection<Function> getFunctions()
{
return _functionMap.values();
}
/**
* Returns the functions.
*/
public ArrayList<Function> getFunctionList()
{
return _functionList;
}
/**
* Returns the classes.
*/
public Collection<InterpretedClassDef> getClasses()
{
return _classMap.values();
}
/**
* Returns the functions.
*/
public ArrayList<InterpretedClassDef> getClassList()
{
return _classList;
}
/**
* Creates a return for the final expr.
*/
public QuercusProgram createExprReturn()
{
// quercus/1515 - used to convert an call string to return a value
if (_statement instanceof ExprStatement) {
ExprStatement exprStmt = (ExprStatement) _statement;
_statement = new ReturnStatement(exprStmt.getExpr());
}
else if (_statement instanceof BlockStatement) {
BlockStatement blockStmt = (BlockStatement) _statement;
Statement []statements = blockStmt.getStatements();
if (statements.length > 0 &&
statements[0] instanceof ExprStatement) {
ExprStatement exprStmt
= (ExprStatement) statements[0];
_statement = new ReturnStatement(exprStmt.getExpr());
}
}
return this;
}
/**
* Execute the program
*
* @param env the calling environment
* @return null if there is no return value
*
*/
public Value execute(Env env)
{
return _statement.execute(env);
}
/**
* Imports the page definitions.
*/
public void init(Env env)
{
/*
for (Map.Entry<String,InterpretedClassDef> entry : _classMap.entrySet()) {
entry.getValue().init(env);
}
*/
}
/**
* Sets a runtime function array after an env.
*/
public boolean setRuntimeFunction(AbstractFunction []funList)
{
synchronized (this) {
if (_runtimeFunList == null) {
_runtimeFunList = funList;
notifyAll();
return true;
}
return false;
}
}
public AbstractFunction []getRuntimeFunctionList()
{
return _runtimeFunList;
}
public void waitForRuntimeFunctionList(long timeout)
{
synchronized (this) {
if (_runtimeFunList == null) {
try {
wait(timeout);
} catch (Exception e) {
log.log(Level.FINER, e.toString(), e);
}
}
}
}
/**
* Imports the page definitions.
*/
public void importDefinitions(Env env)
{
for (Map.Entry<String,Function> entry : _functionMap.entrySet()) {
Function fun = entry.getValue();
if (fun.isGlobal())
env.addFunction(entry.getKey(), fun);
}
for (Map.Entry<String,InterpretedClassDef> entry : _classMap.entrySet()) {
env.addClassDef(entry.getKey(), entry.getValue());
}
}
public String toString()
{
return getClass().getSimpleName() + "[" + _sourceFile + "]";
}
class PageDependency implements Dependency {
public boolean isModified()
{
if (_compiledPage != null)
return _compiledPage.isModified();
else
return _depend.isModified();
}
public boolean logModified(Logger log)
{
if (isModified()) {
log.finer(_sourceFile + " is modified");
return true;
}
else
return false;
}
}
}