com.sun.tools.javac.code.Attribute Java Examples

protected void printObject(String label, Object item, Details details) {
    if (item == null) {
        printNull(label);
    } else if (item instanceof Attribute) {
        printAttribute(label, (Attribute) item);
    } else if (item instanceof Symbol) {
        printSymbol(label, (Symbol) item, details);
    } else if (item instanceof Type) {
        printType(label, (Type) item, details);
    } else if (item instanceof JCTree) {
        printTree(label, (JCTree) item);
    } else if (item instanceof DocTree) {
        printDocTree(label, (DocTree) item);
    } else if (item instanceof List) {
        printList(label, (List) item);
    } else if (item instanceof Name) {
        printName(label, (Name) item);
    } else if (item instanceof Scope) {
        printScope(label, (Scope) item);
    } else {
        printString(label, String.valueOf(item));
    }
}
 

private boolean needsHeader(ClassSymbol c, boolean checkNestedClasses) {
    if (c.isLocal() || (c.flags() & Flags.SYNTHETIC) != 0)
        return false;

    for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
        if (i.sym.kind == Kinds.MTH && (i.sym.flags() & Flags.NATIVE) != 0)
            return true;
        for (Attribute.Compound a: i.sym.getDeclarationAttributes()) {
            if (a.type.tsym == syms.nativeHeaderType.tsym)
                return true;
        }
    }
    if (checkNestedClasses) {
        for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
            if ((i.sym.kind == Kinds.TYP) && needsHeader(((ClassSymbol) i.sym), true))
                return true;
        }
    }
    return false;
}
 

CompoundAnnotationProxy readCompoundAnnotation() {
    Type t;
    if (currentModule.module_info == currentOwner) {
        int index = poolIdx[nextChar()];
        t = new ProxyType(Arrays.copyOfRange(buf, index + 3, index + 3 + getChar(index + 1)));
    } else {
        t = readTypeOrClassSymbol(nextChar());
    }
    int numFields = nextChar();
    ListBuffer<Pair<Name,Attribute>> pairs = new ListBuffer<>();
    for (int i=0; i<numFields; i++) {
        Name name = readName(nextChar());
        Attribute value = readAttributeValue();
        pairs.append(new Pair<>(name, value));
    }
    return new CompoundAnnotationProxy(t, pairs.toList());
}
 

/**
 * Fetches the actual Type that should be the containing annotation.
 */
private Type getContainingType(Attribute.Compound currentAnno,
                               DiagnosticPosition pos,
                               boolean reportError)
{
    Type origAnnoType = currentAnno.type;
    TypeSymbol origAnnoDecl = origAnnoType.tsym;

    // Fetch the Repeatable annotation from the current
    // annotation's declaration, or null if it has none
    Attribute.Compound ca = origAnnoDecl.getAnnotationTypeMetadata().getRepeatable();
    if (ca == null) { // has no Repeatable annotation
        if (reportError)
            log.error(pos, Errors.DuplicateAnnotationMissingContainer(origAnnoType));
        return null;
    }

    return filterSame(extractContainingType(ca, pos, origAnnoDecl),
            origAnnoType);
}
 

public void visitArray(Attribute.Array a) {
    // Omit braces from singleton.
    if (a.values.length != 1) sb.append('{');

    boolean first = true;
    for (Attribute elem : a.values) {
        if (first) {
            first = false;
        } else {
            sb.append(", ");
        }
        elem.accept(this);
    }
    // Omit braces from singleton.
    if (a.values.length != 1) sb.append('}');
}
 

private boolean needsHeader(ClassSymbol c, boolean checkNestedClasses) {
    if (c.isLocal() || (c.flags() & Flags.SYNTHETIC) != 0)
        return false;

    for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
        if (i.sym.kind == Kinds.MTH && (i.sym.flags() & Flags.NATIVE) != 0)
            return true;
        for (Attribute.Compound a: i.sym.getDeclarationAttributes()) {
            if (a.type.tsym == syms.nativeHeaderType.tsym)
                return true;
        }
    }
    if (checkNestedClasses) {
        for (Scope.Entry i = c.members_field.elems; i != null; i = i.sibling) {
            if ((i.sym.kind == Kinds.TYP) && needsHeader(((ClassSymbol) i.sym), true))
                return true;
        }
    }
    return false;
}
 

public void visitArray(Attribute.Array a) {
    // Omit braces from singleton.
    if (a.values.length != 1) sb.append('{');

    boolean first = true;
    for (Attribute elem : a.values) {
        if (first) {
            first = false;
        } else {
            sb.append(", ");
        }
        elem.accept(this);
    }
    // Omit braces from singleton.
    if (a.values.length != 1) sb.append('}');
}
 

/**
 * Returns a map from element names to their values in "dynamic
 * proxy return form".  Includes all elements, whether explicit or
 * defaulted.
 */
private Map<String, Object> getAllReflectedValues() {
    Map<String, Object> res = new LinkedHashMap<String, Object>();

    for (Map.Entry<MethodSymbol, Attribute> entry :
                                              getAllValues().entrySet()) {
        MethodSymbol meth = entry.getKey();
        Object value = generateValue(meth, entry.getValue());
        if (value != null) {
            res.put(meth.name.toString(), value);
        } else {
            // Ignore this element.  May (properly) lead to
            // IncompleteAnnotationException somewhere down the line.
        }
    }
    return res;
}
 

private Type getFragmentValueType( Attribute.Compound attribute )
{
  String type = null;
  for( com.sun.tools.javac.util.Pair<Symbol.MethodSymbol, Attribute> pair: attribute.values )
  {
    Name argName = pair.fst.getSimpleName();
    if( argName.toString().equals( "type" ) )
    {
      type = (String)pair.snd.getValue();
    }
  }

  if( type != null )
  {
    Symbol.ClassSymbol fragValueSym = IDynamicJdk.instance().getTypeElement( JavacPlugin.instance().getContext(), getEnv().toplevel, type );
    if( fragValueSym != null )
    {
      return fragValueSym.type;
    }
  }

  return null;
}
 

private boolean isExtensionMethod( Symbol sym )
{
  if( sym instanceof Symbol.MethodSymbol )
  {
    for( Attribute.Compound annotation: sym.getAnnotationMirrors() )
    {
      if( annotation.type.toString().equals( ExtensionMethod.class.getName() ) )
      {
        return true;
      }
    }
  }
  return false;
}
 

/**
 * Get the annotations of this program element.
 * Return an empty array if there are none.
 */
@Override
public AnnotationDesc[] annotations() {
    List<? extends TypeCompound> tas = type.getAnnotationMirrors();
    if (tas == null ||
            tas.isEmpty()) {
        return new AnnotationDesc[0];
    }
    AnnotationDesc res[] = new AnnotationDesc[tas.length()];
    int i = 0;
    for (Attribute.Compound a : tas) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

public void visitConstant(Attribute.Constant c) {
    if (c.type.hasTag(BOOLEAN)) {
        // javac represents false and true as integers 0 and 1
        sb.append(((Integer)c.value).intValue() != 0);
    } else {
        sb.append(FieldDocImpl.constantValueExpression(c.value));
    }
}
 

public void visitConstant(Attribute.Constant c) {
    if (c.type.hasTag(BOOLEAN)) {
        // javac represents false and true as integers 0 and 1
        value = Boolean.valueOf(
                        ((Integer)c.value).intValue() != 0);
    } else {
        value = c.value;
    }
}
 

public void visitArray(Attribute.Array a) {
    AnnotationValue vals[] = new AnnotationValue[a.values.length];
    for (int i = 0; i < vals.length; i++) {
        vals[i] = new AnnotationValueImpl(env, a.values[i]);
    }
    value = vals;
}
 

public void visitConstant(Attribute.Constant c) {
    if (c.type.hasTag(BOOLEAN)) {
        // javac represents false and true as integers 0 and 1
        value = Boolean.valueOf(
                        ((Integer)c.value).intValue() != 0);
    } else {
        value = c.value;
    }
}
 

Attribute.Compound deproxyCompound(CompoundAnnotationProxy a) {
    Type annotationType = resolvePossibleProxyType(a.type);
    ListBuffer<Pair<Symbol.MethodSymbol,Attribute>> buf = new ListBuffer<>();
    for (List<Pair<Name,Attribute>> l = a.values;
         l.nonEmpty();
         l = l.tail) {
        MethodSymbol meth = findAccessMethod(annotationType, l.head.fst);
        buf.append(new Pair<>(meth, deproxy(meth.type.getReturnType(), l.head.snd)));
    }
    return new Attribute.Compound(annotationType, buf.toList());
}
 

/**
 * Get the annotations of this program element.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    AnnotationDesc res[] = new AnnotationDesc[sym.getRawAttributes().length()];
    int i = 0;
    for (Attribute.Compound a : sym.getRawAttributes()) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

/**
 * Returns this annotation's elements and their values.
 * Only those explicitly present in the annotation are
 * included, not those assuming their default values.
 * Returns an empty array if there are none.
 */
public ElementValuePair[] elementValues() {
    List<Pair<MethodSymbol,Attribute>> vals = annotation.values;
    ElementValuePair res[] = new ElementValuePair[vals.length()];
    int i = 0;
    for (Pair<MethodSymbol,Attribute> val : vals) {
        res[i++] = new ElementValuePairImpl(env, val.fst, val.snd);
    }
    return res;
}
 

public void visitCompound(Attribute.Compound a) {
    if (a instanceof Attribute.TypeCompound) {
        Attribute.TypeCompound ta = (Attribute.TypeCompound) a;
        // consider a custom printer?
        printObject("position", ta.position, Details.SUMMARY);
    }
    printObject("synthesized", a.isSynthesized(), Details.SUMMARY);
    printList("values", a.values);
    visitAttribute(a);
}
 

private JCTree replaceStringLiteral( JCTree.JCLiteral tree )
{
  String literal = (String)tree.getValue();
  if( !literal.contains( FragmentProcessor.FRAGMENT_START ) ||
      !literal.contains( FragmentProcessor.FRAGMENT_END ) )
  {
    return tree;
  }

  JCTree.JCClassDecl enclosingClass = getEnclosingClass( tree );

  CharSequence source = ManParserFactory.getSource( enclosingClass.sym.sourcefile );
  CharSequence chars = source.subSequence( tree.pos().getStartPosition(),
    tree.pos().getEndPosition( ((JCTree.JCCompilationUnit)_tp.getCompilationUnit()).endPositions ) );
  FragmentProcessor.Fragment fragment = FragmentProcessor.instance().parseFragment(
    tree.pos().getStartPosition(), chars.toString(),
    chars.length() > 3 && chars.charAt( 1 ) == '"'
    ? TEXT_BLOCK_LITERAL
    : DOUBLE_QUOTE_LITERAL );
  if( fragment != null )
  {
    String fragClass = enclosingClass.sym.packge().toString() + '.' + fragment.getName();
    Symbol.ClassSymbol fragSym = IDynamicJdk.instance().getTypeElement( _tp.getContext(), _tp.getCompilationUnit(), fragClass );
    for( Attribute.Compound annotation: fragSym.getAnnotationMirrors() )
    {
      if( annotation.type.toString().equals( FragmentValue.class.getName() ) )
      {
        return replaceStringLiteral( fragSym, tree, annotation );
      }
    }
  }

  return tree;
}
 

private Attribute getAnnotationEnumValue(Type expectedElementType, JCExpression tree, Env<AttrContext> env) {
    Type result = attr.attribTree(tree, env, annotationValueInfo(expectedElementType));
    Symbol sym = TreeInfo.symbol(tree);
    if (sym == null ||
            TreeInfo.nonstaticSelect(tree) ||
            sym.kind != VAR ||
            (sym.flags() & Flags.ENUM) == 0) {
        log.error(tree.pos(), Errors.EnumAnnotationMustBeEnumConstant);
        return new Attribute.Error(result.getOriginalType());
    }
    VarSymbol enumerator = (VarSymbol) sym;
    return new Attribute.Enum(expectedElementType, enumerator);
}
 

/**
 * Get the annotations of this program element.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    if (!type.isAnnotated()) {
        return new AnnotationDesc[0];
    }
    List<? extends TypeCompound> tas = type.getAnnotationMirrors();
    AnnotationDesc res[] = new AnnotationDesc[tas.length()];
    int i = 0;
    for (Attribute.Compound a : tas) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

/**
 * Get the annotations of this program element.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    AnnotationDesc res[] = new AnnotationDesc[sym.getRawAttributes().length()];
    int i = 0;
    for (Attribute.Compound a : sym.getRawAttributes()) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

/**
 * Get the annotations of this program element.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    AnnotationDesc res[] = new AnnotationDesc[sym.getRawAttributes().length()];
    int i = 0;
    for (Attribute.Compound a : sym.getRawAttributes()) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

/**
 * Get the annotations of this parameter.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    AnnotationDesc res[] = new AnnotationDesc[sym.getRawAttributes().length()];
    int i = 0;
    for (Attribute.Compound a : sym.getRawAttributes()) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

/**
 * Get the annotations of this package.
 * Return an empty array if there are none.
 */
public AnnotationDesc[] annotations() {
    AnnotationDesc res[] = new AnnotationDesc[sym.getRawAttributes().length()];
    int i = 0;
    for (Attribute.Compound a : sym.getRawAttributes()) {
        res[i++] = new AnnotationDescImpl(env, a);
    }
    return res;
}
 

List<Attribute.Compound> deproxyCompoundList(List<CompoundAnnotationProxy> pl) {
    // also must fill in types!!!!
    ListBuffer<Attribute.Compound> buf = new ListBuffer<>();
    for (List<CompoundAnnotationProxy> l = pl; l.nonEmpty(); l=l.tail) {
        buf.append(deproxyCompound(l.head));
    }
    return buf.toList();
}
 

private SrcType makeSrcType( Type type, Symbol symbol, TargetType targetType, int index )
{
  SrcType srcType;
  List<Attribute.TypeCompound> annotationMirrors = type.getAnnotationMirrors();
  if( annotationMirrors != null && !annotationMirrors.isEmpty() )
  {
    String unannotatedType = isJava8()
                             ? ReflectUtil.method( type, "unannotatedType" ).invoke().toString()
                             : ReflectUtil.method( type, "cloneWithMetadata", ReflectUtil.type( "com.sun.tools.javac.code.TypeMetadata" ) )
                               .invoke( ReflectUtil.field( "com.sun.tools.javac.code.TypeMetadata", "EMPTY" ).getStatic() ).toString();
    srcType = new SrcType( unannotatedType );
  }
  else
  {
    srcType = new SrcType( typeNoAnnotations( type ) );
  }
  SymbolMetadata metadata = symbol.getMetadata();
  if( metadata == null || metadata.isTypesEmpty() )
  {
    return srcType;
  }
  List<Attribute.TypeCompound> typeAttributes = metadata.getTypeAttributes();
  if( typeAttributes.isEmpty() )
  {
    return null;
  }

  java.util.List<Attribute.TypeCompound> targetedTypeAttrs = typeAttributes.stream()
    .filter( attr -> attr.getPosition().type == targetType && isTargetIndex( targetType, attr, index ) )
    .collect( Collectors.toList() );

  annotateType( srcType, targetedTypeAttrs );
  return srcType;
}
 

public void visitCompound(Attribute.Compound c) {
    try {
        Class<? extends Annotation> nested =
            returnClass.asSubclass(Annotation.class);
        value = generateAnnotation(c, nested);
    } catch (ClassCastException ex) {
        value = null;   // indicates a type mismatch
    }
}
 

public void visitConstant(Attribute.Constant c) {
    if (c.type.hasTag(BOOLEAN)) {
        // javac represents false and true as integers 0 and 1
        sb.append(((Integer)c.value).intValue() != 0);
    } else {
        sb.append(FieldDocImpl.constantValueExpression(c.value));
    }
}