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Dragome SDK module: bytecode to javascript compiler
/*******************************************************************************
* Copyright (c) 2011-2014 Fernando Petrola
*
* This file is part of Dragome SDK.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
******************************************************************************/
// Copyright 2011 The j2js Authors. All Rights Reserved.
//
// This file is part of j2js.
//
// j2js 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 3 of the License, or
// (at your option) any later version.
//
// j2js 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. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with j2js. If not, see classesByName;
private ClassUnit javaLangObject;
private boolean compressed;
private boolean generateLineNumbers;
private Map signatures;
private transient Stack ids;
private transient int currentId;
private transient int currentIndex;
public transient int currentGeneratedMethods;
private List clinits= new ArrayList();
private List genericSignatures= new ArrayList();
transient private int badMethods= 0;
public List writtenSignatures= new ArrayList();
private Set typeDeclarationsWithAnnotations= new HashSet();
public List getWrittenSignatures()
{
if (writtenSignatures == null)
writtenSignatures= new ArrayList();
return writtenSignatures;
}
public void writeClinits(Writer writer) throws IOException
{
// for (String clinit : clinits)
// {
// writer.write("new " + clinit.substring(0, clinit.indexOf(".")) + "();\n");
// }
writer.write("new java_lang_String();\n");
for (String clinit : clinits)
{
if (clinit.contains("java_lang_Class._clinit_"))
writer.write(clinit + "\n");
}
for (String clinit : clinits)
{
writer.write(clinit + "\n");
}
}
public List getClinits()
{
return clinits;
}
public void setClinits(List clinits)
{
this.clinits= clinits;
}
public static Project getSingleton()
{
if (singleton == null)
throw new NullPointerException();
return singleton;
}
public static Project createSingleton(File cacheFile)
{
if (cacheFile != null && cacheFile.exists())
{
Log.getLogger().debug("Using cache " + cacheFile);
try
{
read(cacheFile);
}
catch (Exception e)
{
Log.getLogger().warn("Could not read cache:\n" + e.getMessage());
}
}
if (singleton == null || singleton.compressed != DragomeJsCompiler.compiler.isCompression() || singleton.generateLineNumbers != DragomeJsCompiler.compiler.isGenerateLineNumbers())
{
singleton= new Project();
singleton.clear();
}
return singleton;
}
private static void read(File file) throws Exception
{
FileInputStream fis= new FileInputStream(file);
ObjectInputStream ois= new ObjectInputStream(fis);
singleton= (Project) ois.readObject();
ois.close();
}
public static void write() throws IOException
{
File file= DragomeJsCompiler.compiler.getCacheFile();
if (file.exists() && !file.canWrite())
{
throw new IOException("Cannot write " + file);
}
FileOutputStream fos= new FileOutputStream(file);
ObjectOutputStream oos= new ObjectOutputStream(fos);
oos.writeObject(singleton);
oos.close();
}
public Signature getArraySignature(Type type)
{
String signatureString= type.getSignature();
if (!signatureString.startsWith("L") || !signatureString.endsWith(";"))
{
throw new RuntimeException("Not a class signature: " + signatureString);
}
signatureString= signatureString.substring(1, signatureString.length() - 1);
return getSignature(signatureString);
}
public Signature getSignature(String signatureString)
{
if (signatureString.endsWith(";"))
{
}
signatureString= signatureString.replaceAll("/", ".");
Signature signature= signatures.get(signatureString);
if (signature == null)
{
signature= new Signature(signatureString, getUniqueId());
signatures.put(signatureString, signature);
}
return signature;
}
public Signature getSignature(String className, String relativeSignature)
{
return getSignature(className + '#' + relativeSignature);
}
public Signature getSignature(FieldAccess fa)
{
return getSignature(fa.getType().getClassName(), fa.getName());
}
private int getUniqueId()
{
if (ids == null)
{
ids= new Stack();
for (Signature signature : signatures.values())
{
ids.add(signature.getId());
}
Collections.sort(ids);
}
while (currentIndex < ids.size() && ids.get(currentIndex) == currentId)
{
currentId+= 1;
currentIndex+= 1;
}
currentId++;
return currentId - 1;
}
private void clear()
{
classesByName= new LinkedHashMap();
javaLangObject= null;
signatures= new LinkedHashMap();
ids= null;
currentId= 0;
currentIndex= 0;
compressed= DragomeJsCompiler.compiler.isCompression();
generateLineNumbers= DragomeJsCompiler.compiler.isGenerateLineNumbers();
badMethods= 0;
writtenSignatures= new ArrayList();
}
public void remove(ClassUnit clazz)
{
classesByName.remove(clazz);
}
public void visitSuperTypes(ClassUnit clazz, TypeVisitor visitor)
{
visitor.visit(clazz);
ClassUnit superClass= clazz.getSuperUnit();
if (superClass != null)
{
visitSuperTypes(superClass, visitor);
}
for (ClassUnit interfaceUnit : clazz.getInterfaces())
{
visitor.visit(interfaceUnit);
visitSuperTypes(interfaceUnit, visitor);
}
}
public ClassUnit getJavaLangObject()
{
return javaLangObject;
}
public ClassUnit getClassUnit(String className)
{
ClassUnit clazz= classesByName.get(className);
if (clazz != null)
return clazz;
throw new RuntimeException("No such unit: " + className);
}
public ClassUnit getClassUnit(ReferenceType type)
{
String signature;
if (type instanceof ArrayType)
{
ArrayType aType= (ArrayType) type;
signature= Utils.getSignature(aType.getBasicType());
for (int i= 0; i < aType.getDimensions(); i++)
{
signature+= "[]";
}
}
else
{
signature= Utils.getSignature(type);
}
return getClassUnit(signature);
}
public ClassUnit getOrCreateClassUnit(String className)
{
ClassUnit classUnit= classesByName.get(className);
if (classUnit != null)
return classUnit;
Signature signature= Project.singleton.getSignature(className);
classUnit= new ClassUnit(this, signature);
classesByName.put(className, classUnit);
if (className.equals("java.lang.Object"))
{
javaLangObject= classUnit;
}
return classUnit;
}
private MemberUnit getMemberUnitOrNull(String className, Signature signature)
{
ClassUnit classUnit= getOrCreateClassUnit(className);
if (classUnit == null)
return null;
return classUnit.getDeclaredMember(signature.toString());
}
private MemberUnit getMemberUnit(String className, Signature signature)
{
MemberUnit unit= getMemberUnitOrNull(className, signature);
if (unit == null)
{
throw new RuntimeException("No such unit: " + className + "#" + signature);
}
return unit;
}
public ProcedureUnit getProcedureUnit(MethodBinding methodBinding)
{
Signature signature= Project.singleton.getSignature(methodBinding.getRelativeSignature());
String className= methodBinding.getDeclaringClass().getClassName();
return (ProcedureUnit) getMemberUnit(className, signature);
}
public ProcedureUnit getOrCreateProcedureUnit(MethodBinding methodBinding)
{
Signature signature= Project.singleton.getSignature(methodBinding.getRelativeSignature());
String className= methodBinding.getDeclaringClass().getClassName();
return (ProcedureUnit) getOrCreateMemberUnit(className, signature, Pass1.extractMethodNameSignature(methodBinding));
}
private MemberUnit getOrCreateMemberUnit(String className, Signature signature, String nameAndSignature)
{
MemberUnit member= getMemberUnitOrNull(className, signature);
if (member == null)
{
ClassUnit clazz= getClassUnit(className);
if (signature.isMethod())
{
member= new MethodUnit(signature, clazz, nameAndSignature);
}
else if (signature.isConstructor())
{
member= new ConstructorUnit(signature, clazz);
}
else
{
member= new FieldUnit(signature, clazz);
}
}
return member;
}
public FieldUnit getOrCreateFieldUnit(ObjectType type, String name)
{
return (FieldUnit) getOrCreateMemberUnit(type.getClassName(), Project.singleton.getSignature(name), "");
}
public void addReference(MethodDeclaration decl, FieldAccess fa)
{
ProcedureUnit source= getOrCreateProcedureUnit(decl.getMethodBinding());
source.addTarget(Project.singleton.getSignature(fa));
}
public void addReference(MethodDeclaration decl, MethodInvocation invocation)
{
ProcedureUnit source= getOrCreateProcedureUnit(decl.getMethodBinding());
source.addTarget(Project.singleton.getSignature(invocation.getMethodBinding().toString()));
}
public void addReference(MethodDeclaration decl, ArrayCreation ac)
{
ProcedureUnit source= getOrCreateProcedureUnit(decl.getMethodBinding());
Signature signature= Project.getSingleton().getArraySignature(ac.getTypeBinding());
for (int i= 0; i < ac.getDimensions().size(); i++)
{
source.addTarget(Project.singleton.getSignature(signature.toString().substring(i) + "#length"));
}
}
public Collection getClasses()
{
return new ArrayList(classesByName.values());
}
public void resolve(ClassUnit clazz)
{
if (clazz.isResolved())
return;
if (clazz.getName().startsWith("["))
{
clazz.setSuperUnit(getJavaLangObject());
clazz.setResolved(true);
new FieldUnit(getSignature("length"), clazz);
TypeDeclaration typeDecl= new TypeDeclaration(new ObjectType(clazz.getName()), 0, new HashMap());//revisar annotations
typeDecl.setSuperType(Type.OBJECT);
typeDecl.visit(DragomeJsCompiler.compiler.generator);
}
else
{
TypeResolver resolver= new TypeResolver(this, DragomeJsCompiler.compiler.generator);
visitSuperTypes(clazz, resolver);
}
}
public void writeSignatures(Writer writer)
{
try
{
for (String genericSignature : genericSignatures)
{
String[] split= genericSignature.split("\\|");
if (getWrittenSignatures().contains(split[0] + "|" + split[1]))
writer.write("addSignatureTo(" + split[0] + ",\"" + split[1] + "\", \"" + split[2] + "\");\n");
}
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
public void addGenericSignature(String genericSignature)
{
this.genericSignatures.add(genericSignature);
}
public int incrementBadMethods(int i)
{
return badMethods+= i;
}
public int getBadMethods()
{
return badMethods;
}
public void addTypeAnnotations(TypeDeclaration typeDecl)
{
for (Iterator iterator= getTypeDeclarationsWithAnnotations().iterator(); iterator.hasNext();)
{
String declaredAnnotation= (String) iterator.next();
if (declaredAnnotation.startsWith(typeDecl.getClassName()))
iterator.remove();
}
if (!typeDecl.getAnnotations().isEmpty())
{
for (Entry entry : typeDecl.getAnnotations().entrySet())
{
getTypeDeclarationsWithAnnotations().add(typeDecl.getClassName() + "#" + entry.getKey() + "#" + entry.getValue());
}
}
}
public Set getTypeDeclarationsWithAnnotations()
{
return typeDeclarationsWithAnnotations;
}
}