| /* |
| * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.javac.comp; |
| |
| import com.sun.tools.javac.code.*; |
| import com.sun.tools.javac.code.Attribute.Compound; |
| import com.sun.tools.javac.code.Attribute.TypeCompound; |
| import com.sun.tools.javac.code.Kinds.KindSelector; |
| import com.sun.tools.javac.code.Scope.WriteableScope; |
| import com.sun.tools.javac.code.Source.Feature; |
| import com.sun.tools.javac.code.Symbol.*; |
| import com.sun.tools.javac.code.TypeMetadata.Entry.Kind; |
| import com.sun.tools.javac.comp.Check.CheckContext; |
| import com.sun.tools.javac.resources.CompilerProperties.Errors; |
| import com.sun.tools.javac.resources.CompilerProperties.Fragments; |
| import com.sun.tools.javac.tree.JCTree; |
| import com.sun.tools.javac.tree.JCTree.*; |
| import com.sun.tools.javac.tree.TreeInfo; |
| import com.sun.tools.javac.tree.TreeMaker; |
| import com.sun.tools.javac.tree.TreeScanner; |
| import com.sun.tools.javac.util.*; |
| import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
| import com.sun.tools.javac.util.List; |
| |
| import javax.tools.JavaFileObject; |
| |
| import java.util.*; |
| |
| import static com.sun.tools.javac.code.Flags.SYNTHETIC; |
| import static com.sun.tools.javac.code.Kinds.Kind.MDL; |
| import static com.sun.tools.javac.code.Kinds.Kind.MTH; |
| import static com.sun.tools.javac.code.Kinds.Kind.PCK; |
| import static com.sun.tools.javac.code.Kinds.Kind.VAR; |
| import static com.sun.tools.javac.code.Scope.LookupKind.NON_RECURSIVE; |
| import static com.sun.tools.javac.code.TypeTag.ARRAY; |
| import static com.sun.tools.javac.code.TypeTag.CLASS; |
| import static com.sun.tools.javac.tree.JCTree.Tag.ANNOTATION; |
| import static com.sun.tools.javac.tree.JCTree.Tag.ASSIGN; |
| import static com.sun.tools.javac.tree.JCTree.Tag.IDENT; |
| import static com.sun.tools.javac.tree.JCTree.Tag.NEWARRAY; |
| |
| import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag; |
| |
| |
| /** Enter annotations onto symbols and types (and trees). |
| * |
| * This is also a pseudo stage in the compiler taking care of scheduling when annotations are |
| * entered. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class Annotate { |
| protected static final Context.Key<Annotate> annotateKey = new Context.Key<>(); |
| |
| public static Annotate instance(Context context) { |
| Annotate instance = context.get(annotateKey); |
| if (instance == null) |
| instance = new Annotate(context); |
| return instance; |
| } |
| |
| private final Attr attr; |
| private final Check chk; |
| private final ConstFold cfolder; |
| private final DeferredLintHandler deferredLintHandler; |
| private final Enter enter; |
| private final Lint lint; |
| private final Log log; |
| private final Names names; |
| private final Resolve resolve; |
| private final TreeMaker make; |
| private final Symtab syms; |
| private final TypeEnvs typeEnvs; |
| private final Types types; |
| |
| private final Attribute theUnfinishedDefaultValue; |
| private final boolean allowRepeatedAnnos; |
| private final String sourceName; |
| |
| protected Annotate(Context context) { |
| context.put(annotateKey, this); |
| |
| attr = Attr.instance(context); |
| chk = Check.instance(context); |
| cfolder = ConstFold.instance(context); |
| deferredLintHandler = DeferredLintHandler.instance(context); |
| enter = Enter.instance(context); |
| log = Log.instance(context); |
| lint = Lint.instance(context); |
| make = TreeMaker.instance(context); |
| names = Names.instance(context); |
| resolve = Resolve.instance(context); |
| syms = Symtab.instance(context); |
| typeEnvs = TypeEnvs.instance(context); |
| types = Types.instance(context); |
| |
| theUnfinishedDefaultValue = new Attribute.Error(syms.errType); |
| |
| Source source = Source.instance(context); |
| allowRepeatedAnnos = Feature.REPEATED_ANNOTATIONS.allowedInSource(source); |
| sourceName = source.name; |
| |
| blockCount = 1; |
| } |
| |
| /** Semaphore to delay annotation processing */ |
| private int blockCount = 0; |
| |
| /** Called when annotations processing needs to be postponed. */ |
| public void blockAnnotations() { |
| blockCount++; |
| } |
| |
| /** Called when annotation processing can be resumed. */ |
| public void unblockAnnotations() { |
| blockCount--; |
| if (blockCount == 0) |
| flush(); |
| } |
| |
| /** Variant which allows for a delayed flush of annotations. |
| * Needed by ClassReader */ |
| public void unblockAnnotationsNoFlush() { |
| blockCount--; |
| } |
| |
| /** are we blocking annotation processing? */ |
| public boolean annotationsBlocked() {return blockCount > 0; } |
| |
| public void enterDone() { |
| unblockAnnotations(); |
| } |
| |
| public List<TypeCompound> fromAnnotations(List<JCAnnotation> annotations) { |
| if (annotations.isEmpty()) { |
| return List.nil(); |
| } |
| |
| ListBuffer<TypeCompound> buf = new ListBuffer<>(); |
| for (JCAnnotation anno : annotations) { |
| Assert.checkNonNull(anno.attribute); |
| buf.append((TypeCompound) anno.attribute); |
| } |
| return buf.toList(); |
| } |
| |
| /** Annotate (used for everything else) */ |
| public void normal(Runnable r) { |
| q.append(r); |
| } |
| |
| /** Validate, triggers after 'normal' */ |
| public void validate(Runnable a) { |
| validateQ.append(a); |
| } |
| |
| /** Flush all annotation queues */ |
| public void flush() { |
| if (annotationsBlocked()) return; |
| if (isFlushing()) return; |
| |
| startFlushing(); |
| try { |
| while (q.nonEmpty()) { |
| q.next().run(); |
| } |
| while (typesQ.nonEmpty()) { |
| typesQ.next().run(); |
| } |
| while (afterTypesQ.nonEmpty()) { |
| afterTypesQ.next().run(); |
| } |
| while (validateQ.nonEmpty()) { |
| validateQ.next().run(); |
| } |
| } finally { |
| doneFlushing(); |
| } |
| } |
| |
| private ListBuffer<Runnable> q = new ListBuffer<>(); |
| private ListBuffer<Runnable> validateQ = new ListBuffer<>(); |
| |
| private int flushCount = 0; |
| private boolean isFlushing() { return flushCount > 0; } |
| private void startFlushing() { flushCount++; } |
| private void doneFlushing() { flushCount--; } |
| |
| ListBuffer<Runnable> typesQ = new ListBuffer<>(); |
| ListBuffer<Runnable> afterTypesQ = new ListBuffer<>(); |
| |
| |
| public void typeAnnotation(Runnable a) { |
| typesQ.append(a); |
| } |
| |
| public void afterTypes(Runnable a) { |
| afterTypesQ.append(a); |
| } |
| |
| /** |
| * Queue annotations for later attribution and entering. This is probably the method you are looking for. |
| * |
| * @param annotations the list of JCAnnotations to attribute and enter |
| * @param localEnv the enclosing env |
| * @param s ths Symbol on which to enter the annotations |
| * @param deferPos report errors here |
| */ |
| public void annotateLater(List<JCAnnotation> annotations, Env<AttrContext> localEnv, |
| Symbol s, DiagnosticPosition deferPos) |
| { |
| if (annotations.isEmpty()) { |
| return; |
| } |
| |
| s.resetAnnotations(); // mark Annotations as incomplete for now |
| |
| normal(() -> { |
| // Packages are unusual, in that they are the only type of declaration that can legally appear |
| // more than once in a compilation, and in all cases refer to the same underlying symbol. |
| // This means they are the only kind of declaration that syntactically may have multiple sets |
| // of annotations, each on a different package declaration, even though that is ultimately |
| // forbidden by JLS 8 section 7.4. |
| // The corollary here is that all of the annotations on a package symbol may have already |
| // been handled, meaning that the set of annotations pending completion is now empty. |
| Assert.check(s.kind == PCK || s.annotationsPendingCompletion()); |
| JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| DiagnosticPosition prevLintPos = |
| deferPos != null |
| ? deferredLintHandler.setPos(deferPos) |
| : deferredLintHandler.immediate(); |
| Lint prevLint = deferPos != null ? null : chk.setLint(lint); |
| try { |
| if (s.hasAnnotations() && annotations.nonEmpty()) |
| log.error(annotations.head.pos, Errors.AlreadyAnnotated(Kinds.kindName(s), s)); |
| |
| Assert.checkNonNull(s, "Symbol argument to actualEnterAnnotations is null"); |
| |
| // false is passed as fifth parameter since annotateLater is |
| // never called for a type parameter |
| annotateNow(s, annotations, localEnv, false, false); |
| } finally { |
| if (prevLint != null) |
| chk.setLint(prevLint); |
| deferredLintHandler.setPos(prevLintPos); |
| log.useSource(prev); |
| } |
| }); |
| |
| validate(() -> { //validate annotations |
| JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| try { |
| chk.validateAnnotations(annotations, s); |
| } finally { |
| log.useSource(prev); |
| } |
| }); |
| } |
| |
| |
| /** Queue processing of an attribute default value. */ |
| public void annotateDefaultValueLater(JCExpression defaultValue, Env<AttrContext> localEnv, |
| MethodSymbol m, DiagnosticPosition deferPos) |
| { |
| normal(() -> { |
| JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| DiagnosticPosition prevLintPos = deferredLintHandler.setPos(deferPos); |
| try { |
| enterDefaultValue(defaultValue, localEnv, m); |
| } finally { |
| deferredLintHandler.setPos(prevLintPos); |
| log.useSource(prev); |
| } |
| }); |
| |
| validate(() -> { //validate annotations |
| JavaFileObject prev = log.useSource(localEnv.toplevel.sourcefile); |
| try { |
| // if default value is an annotation, check it is a well-formed |
| // annotation value (e.g. no duplicate values, no missing values, etc.) |
| chk.validateAnnotationTree(defaultValue); |
| } finally { |
| log.useSource(prev); |
| } |
| }); |
| } |
| |
| /** Enter a default value for an annotation element. */ |
| private void enterDefaultValue(JCExpression defaultValue, |
| Env<AttrContext> localEnv, MethodSymbol m) { |
| m.defaultValue = attributeAnnotationValue(m.type.getReturnType(), defaultValue, localEnv); |
| } |
| |
| /** |
| * Gather up annotations into a map from type symbols to lists of Compound attributes, |
| * then continue on with repeating annotations processing. |
| */ |
| private <T extends Attribute.Compound> void annotateNow(Symbol toAnnotate, |
| List<JCAnnotation> withAnnotations, Env<AttrContext> env, boolean typeAnnotations, |
| boolean isTypeParam) |
| { |
| Map<TypeSymbol, ListBuffer<T>> annotated = new LinkedHashMap<>(); |
| Map<T, DiagnosticPosition> pos = new HashMap<>(); |
| |
| for (List<JCAnnotation> al = withAnnotations; !al.isEmpty(); al = al.tail) { |
| JCAnnotation a = al.head; |
| |
| T c; |
| if (typeAnnotations) { |
| @SuppressWarnings("unchecked") |
| T tmp = (T)attributeTypeAnnotation(a, syms.annotationType, env); |
| c = tmp; |
| } else { |
| @SuppressWarnings("unchecked") |
| T tmp = (T)attributeAnnotation(a, syms.annotationType, env); |
| c = tmp; |
| } |
| |
| Assert.checkNonNull(c, "Failed to create annotation"); |
| |
| if (annotated.containsKey(a.type.tsym)) { |
| if (!allowRepeatedAnnos) { |
| log.error(DiagnosticFlag.SOURCE_LEVEL, a.pos(), Feature.REPEATED_ANNOTATIONS.error(sourceName)); |
| } |
| ListBuffer<T> l = annotated.get(a.type.tsym); |
| l = l.append(c); |
| annotated.put(a.type.tsym, l); |
| pos.put(c, a.pos()); |
| } else { |
| annotated.put(a.type.tsym, ListBuffer.of(c)); |
| pos.put(c, a.pos()); |
| } |
| |
| // Note: @Deprecated has no effect on local variables and parameters |
| if (!c.type.isErroneous() |
| && (toAnnotate.kind == MDL || toAnnotate.owner.kind != MTH) |
| && types.isSameType(c.type, syms.deprecatedType)) { |
| toAnnotate.flags_field |= (Flags.DEPRECATED | Flags.DEPRECATED_ANNOTATION); |
| Attribute fr = c.member(names.forRemoval); |
| if (fr instanceof Attribute.Constant) { |
| Attribute.Constant v = (Attribute.Constant) fr; |
| if (v.type == syms.booleanType && ((Integer) v.value) != 0) { |
| toAnnotate.flags_field |= Flags.DEPRECATED_REMOVAL; |
| } |
| } |
| } |
| } |
| |
| List<T> buf = List.nil(); |
| for (ListBuffer<T> lb : annotated.values()) { |
| if (lb.size() == 1) { |
| buf = buf.prepend(lb.first()); |
| } else { |
| AnnotationContext<T> ctx = new AnnotationContext<>(env, annotated, pos, typeAnnotations); |
| T res = makeContainerAnnotation(lb.toList(), ctx, toAnnotate, isTypeParam); |
| if (res != null) |
| buf = buf.prepend(res); |
| } |
| } |
| |
| if (typeAnnotations) { |
| @SuppressWarnings("unchecked") |
| List<TypeCompound> attrs = (List<TypeCompound>)buf.reverse(); |
| toAnnotate.appendUniqueTypeAttributes(attrs); |
| } else { |
| @SuppressWarnings("unchecked") |
| List<Attribute.Compound> attrs = (List<Attribute.Compound>)buf.reverse(); |
| toAnnotate.resetAnnotations(); |
| toAnnotate.setDeclarationAttributes(attrs); |
| } |
| } |
| |
| /** |
| * Attribute and store a semantic representation of the annotation tree {@code tree} into the |
| * tree.attribute field. |
| * |
| * @param tree the tree representing an annotation |
| * @param expectedAnnotationType the expected (super)type of the annotation |
| * @param env the current env in where the annotation instance is found |
| */ |
| public Attribute.Compound attributeAnnotation(JCAnnotation tree, Type expectedAnnotationType, |
| Env<AttrContext> env) |
| { |
| // The attribute might have been entered if it is Target or Repetable |
| // Because TreeCopier does not copy type, redo this if type is null |
| if (tree.attribute != null && tree.type != null) |
| return tree.attribute; |
| |
| List<Pair<MethodSymbol, Attribute>> elems = attributeAnnotationValues(tree, expectedAnnotationType, env); |
| Attribute.Compound ac = new Attribute.Compound(tree.type, elems); |
| |
| return tree.attribute = ac; |
| } |
| |
| /** Attribute and store a semantic representation of the type annotation tree {@code tree} into |
| * the tree.attribute field. |
| * |
| * @param a the tree representing an annotation |
| * @param expectedAnnotationType the expected (super)type of the annotation |
| * @param env the the current env in where the annotation instance is found |
| */ |
| public Attribute.TypeCompound attributeTypeAnnotation(JCAnnotation a, Type expectedAnnotationType, |
| Env<AttrContext> env) |
| { |
| // The attribute might have been entered if it is Target or Repetable |
| // Because TreeCopier does not copy type, redo this if type is null |
| if (a.attribute == null || a.type == null || !(a.attribute instanceof Attribute.TypeCompound)) { |
| // Create a new TypeCompound |
| List<Pair<MethodSymbol,Attribute>> elems = |
| attributeAnnotationValues(a, expectedAnnotationType, env); |
| |
| Attribute.TypeCompound tc = |
| new Attribute.TypeCompound(a.type, elems, TypeAnnotationPosition.unknown); |
| a.attribute = tc; |
| return tc; |
| } else { |
| // Use an existing TypeCompound |
| return (Attribute.TypeCompound)a.attribute; |
| } |
| } |
| |
| /** |
| * Attribute annotation elements creating a list of pairs of the Symbol representing that |
| * element and the value of that element as an Attribute. */ |
| private List<Pair<MethodSymbol, Attribute>> attributeAnnotationValues(JCAnnotation a, |
| Type expected, Env<AttrContext> env) |
| { |
| // The annotation might have had its type attributed (but not |
| // checked) by attr.attribAnnotationTypes during MemberEnter, |
| // in which case we do not need to do it again. |
| Type at = (a.annotationType.type != null ? |
| a.annotationType.type : attr.attribType(a.annotationType, env)); |
| a.type = chk.checkType(a.annotationType.pos(), at, expected); |
| |
| boolean isError = a.type.isErroneous(); |
| if (!a.type.tsym.isAnnotationType() && !isError) { |
| log.error(a.annotationType.pos(), Errors.NotAnnotationType(a.type)); |
| isError = true; |
| } |
| |
| // List of name=value pairs (or implicit "value=" if size 1) |
| List<JCExpression> args = a.args; |
| |
| boolean elidedValue = false; |
| // special case: elided "value=" assumed |
| if (args.length() == 1 && !args.head.hasTag(ASSIGN)) { |
| args.head = make.at(args.head.pos). |
| Assign(make.Ident(names.value), args.head); |
| elidedValue = true; |
| } |
| |
| ListBuffer<Pair<MethodSymbol,Attribute>> buf = new ListBuffer<>(); |
| for (List<JCExpression> tl = args; tl.nonEmpty(); tl = tl.tail) { |
| Pair<MethodSymbol, Attribute> p = attributeAnnotationNameValuePair(tl.head, a.type, isError, env, elidedValue); |
| if (p != null && !p.fst.type.isErroneous()) |
| buf.append(p); |
| } |
| return buf.toList(); |
| } |
| |
| // where |
| private Pair<MethodSymbol, Attribute> attributeAnnotationNameValuePair(JCExpression nameValuePair, |
| Type thisAnnotationType, boolean badAnnotation, Env<AttrContext> env, boolean elidedValue) |
| { |
| if (!nameValuePair.hasTag(ASSIGN)) { |
| log.error(nameValuePair.pos(), Errors.AnnotationValueMustBeNameValue); |
| attributeAnnotationValue(nameValuePair.type = syms.errType, nameValuePair, env); |
| return null; |
| } |
| JCAssign assign = (JCAssign)nameValuePair; |
| if (!assign.lhs.hasTag(IDENT)) { |
| log.error(nameValuePair.pos(), Errors.AnnotationValueMustBeNameValue); |
| attributeAnnotationValue(nameValuePair.type = syms.errType, nameValuePair, env); |
| return null; |
| } |
| |
| // Resolve element to MethodSym |
| JCIdent left = (JCIdent)assign.lhs; |
| Symbol method = resolve.resolveQualifiedMethod(elidedValue ? assign.rhs.pos() : left.pos(), |
| env, thisAnnotationType, |
| left.name, List.nil(), null); |
| left.sym = method; |
| left.type = method.type; |
| if (method.owner != thisAnnotationType.tsym && !badAnnotation) |
| log.error(left.pos(), Errors.NoAnnotationMember(left.name, thisAnnotationType)); |
| Type resultType = method.type.getReturnType(); |
| |
| // Compute value part |
| Attribute value = attributeAnnotationValue(resultType, assign.rhs, env); |
| nameValuePair.type = resultType; |
| |
| return method.type.isErroneous() ? null : new Pair<>((MethodSymbol)method, value); |
| |
| } |
| |
| /** Attribute an annotation element value */ |
| private Attribute attributeAnnotationValue(Type expectedElementType, JCExpression tree, |
| Env<AttrContext> env) |
| { |
| //first, try completing the symbol for the annotation value - if acompletion |
| //error is thrown, we should recover gracefully, and display an |
| //ordinary resolution diagnostic. |
| try { |
| expectedElementType.tsym.complete(); |
| } catch(CompletionFailure e) { |
| log.error(tree.pos(), Errors.CantResolve(Kinds.kindName(e.sym), e.sym.getQualifiedName(), null, null)); |
| expectedElementType = syms.errType; |
| } |
| |
| if (expectedElementType.hasTag(ARRAY)) { |
| return getAnnotationArrayValue(expectedElementType, tree, env); |
| |
| } |
| |
| //error recovery |
| if (tree.hasTag(NEWARRAY)) { |
| if (!expectedElementType.isErroneous()) |
| log.error(tree.pos(), Errors.AnnotationValueNotAllowableType); |
| JCNewArray na = (JCNewArray)tree; |
| if (na.elemtype != null) { |
| log.error(na.elemtype.pos(), Errors.NewNotAllowedInAnnotation); |
| } |
| for (List<JCExpression> l = na.elems; l.nonEmpty(); l=l.tail) { |
| attributeAnnotationValue(syms.errType, |
| l.head, |
| env); |
| } |
| return new Attribute.Error(syms.errType); |
| } |
| |
| if (expectedElementType.tsym.isAnnotationType()) { |
| if (tree.hasTag(ANNOTATION)) { |
| return attributeAnnotation((JCAnnotation)tree, expectedElementType, env); |
| } else { |
| log.error(tree.pos(), Errors.AnnotationValueMustBeAnnotation); |
| expectedElementType = syms.errType; |
| } |
| } |
| |
| //error recovery |
| if (tree.hasTag(ANNOTATION)) { |
| if (!expectedElementType.isErroneous()) |
| log.error(tree.pos(), Errors.AnnotationNotValidForType(expectedElementType)); |
| attributeAnnotation((JCAnnotation)tree, syms.errType, env); |
| return new Attribute.Error(((JCAnnotation)tree).annotationType.type); |
| } |
| |
| MemberEnter.InitTreeVisitor initTreeVisitor = new MemberEnter.InitTreeVisitor() { |
| // the methods below are added to allow class literals on top of constant expressions |
| @Override |
| public void visitTypeIdent(JCPrimitiveTypeTree that) {} |
| |
| @Override |
| public void visitTypeArray(JCArrayTypeTree that) {} |
| }; |
| tree.accept(initTreeVisitor); |
| if (!initTreeVisitor.result) { |
| log.error(tree.pos(), Errors.ExpressionNotAllowableAsAnnotationValue); |
| return new Attribute.Error(syms.errType); |
| } |
| |
| if (expectedElementType.isPrimitive() || |
| (types.isSameType(expectedElementType, syms.stringType) && !expectedElementType.hasTag(TypeTag.ERROR))) { |
| return getAnnotationPrimitiveValue(expectedElementType, tree, env); |
| } |
| |
| if (expectedElementType.tsym == syms.classType.tsym) { |
| return getAnnotationClassValue(expectedElementType, tree, env); |
| } |
| |
| if (expectedElementType.hasTag(CLASS) && |
| (expectedElementType.tsym.flags() & Flags.ENUM) != 0) { |
| return getAnnotationEnumValue(expectedElementType, tree, env); |
| } |
| |
| //error recovery: |
| if (!expectedElementType.isErroneous()) |
| log.error(tree.pos(), Errors.AnnotationValueNotAllowableType); |
| return new Attribute.Error(attr.attribExpr(tree, env, expectedElementType)); |
| } |
| |
| 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); |
| } |
| |
| private Attribute getAnnotationClassValue(Type expectedElementType, JCExpression tree, Env<AttrContext> env) { |
| Type result = attr.attribTree(tree, env, annotationValueInfo(expectedElementType)); |
| if (result.isErroneous()) { |
| // Does it look like an unresolved class literal? |
| if (TreeInfo.name(tree) == names._class && |
| ((JCFieldAccess) tree).selected.type.isErroneous()) { |
| Name n = (((JCFieldAccess) tree).selected).type.tsym.flatName(); |
| return new Attribute.UnresolvedClass(expectedElementType, |
| types.createErrorType(n, |
| syms.unknownSymbol, syms.classType)); |
| } else { |
| return new Attribute.Error(result.getOriginalType()); |
| } |
| } |
| |
| // Class literals look like field accesses of a field named class |
| // at the tree level |
| if (TreeInfo.name(tree) != names._class) { |
| log.error(tree.pos(), Errors.AnnotationValueMustBeClassLiteral); |
| return new Attribute.Error(syms.errType); |
| } |
| |
| return new Attribute.Class(types, |
| (((JCFieldAccess) tree).selected).type); |
| } |
| |
| private Attribute getAnnotationPrimitiveValue(Type expectedElementType, JCExpression tree, Env<AttrContext> env) { |
| Type result = attr.attribTree(tree, env, annotationValueInfo(expectedElementType)); |
| if (result.isErroneous()) |
| return new Attribute.Error(result.getOriginalType()); |
| if (result.constValue() == null) { |
| log.error(tree.pos(), Errors.AttributeValueMustBeConstant); |
| return new Attribute.Error(expectedElementType); |
| } |
| result = cfolder.coerce(result, expectedElementType); |
| return new Attribute.Constant(expectedElementType, result.constValue()); |
| } |
| |
| private Attr.ResultInfo annotationValueInfo(Type pt) { |
| return attr.unknownExprInfo.dup(pt, new AnnotationValueContext(attr.unknownExprInfo.checkContext)); |
| } |
| |
| class AnnotationValueContext extends Check.NestedCheckContext { |
| AnnotationValueContext(CheckContext enclosingContext) { |
| super(enclosingContext); |
| } |
| |
| @Override |
| public boolean compatible(Type found, Type req, Warner warn) { |
| //handle non-final implicitly-typed vars (will be rejected later on) |
| return found.hasTag(TypeTag.NONE) || super.compatible(found, req, warn); |
| } |
| } |
| |
| private Attribute getAnnotationArrayValue(Type expectedElementType, JCExpression tree, Env<AttrContext> env) { |
| // Special case, implicit array |
| if (!tree.hasTag(NEWARRAY)) { |
| tree = make.at(tree.pos). |
| NewArray(null, List.nil(), List.of(tree)); |
| } |
| |
| JCNewArray na = (JCNewArray)tree; |
| if (na.elemtype != null) { |
| log.error(na.elemtype.pos(), Errors.NewNotAllowedInAnnotation); |
| } |
| ListBuffer<Attribute> buf = new ListBuffer<>(); |
| for (List<JCExpression> l = na.elems; l.nonEmpty(); l=l.tail) { |
| buf.append(attributeAnnotationValue(types.elemtype(expectedElementType), |
| l.head, |
| env)); |
| } |
| na.type = expectedElementType; |
| return new Attribute. |
| Array(expectedElementType, buf.toArray(new Attribute[buf.length()])); |
| } |
| |
| /* ********************************* |
| * Support for repeating annotations |
| ***********************************/ |
| |
| /** |
| * This context contains all the information needed to synthesize new |
| * annotations trees for repeating annotations. |
| */ |
| private class AnnotationContext<T extends Attribute.Compound> { |
| public final Env<AttrContext> env; |
| public final Map<Symbol.TypeSymbol, ListBuffer<T>> annotated; |
| public final Map<T, JCDiagnostic.DiagnosticPosition> pos; |
| public final boolean isTypeCompound; |
| |
| public AnnotationContext(Env<AttrContext> env, |
| Map<Symbol.TypeSymbol, ListBuffer<T>> annotated, |
| Map<T, JCDiagnostic.DiagnosticPosition> pos, |
| boolean isTypeCompound) { |
| Assert.checkNonNull(env); |
| Assert.checkNonNull(annotated); |
| Assert.checkNonNull(pos); |
| |
| this.env = env; |
| this.annotated = annotated; |
| this.pos = pos; |
| this.isTypeCompound = isTypeCompound; |
| } |
| } |
| |
| /* Process repeated annotations. This method returns the |
| * synthesized container annotation or null IFF all repeating |
| * annotation are invalid. This method reports errors/warnings. |
| */ |
| private <T extends Attribute.Compound> T processRepeatedAnnotations(List<T> annotations, |
| AnnotationContext<T> ctx, Symbol on, boolean isTypeParam) |
| { |
| T firstOccurrence = annotations.head; |
| List<Attribute> repeated = List.nil(); |
| Type origAnnoType = null; |
| Type arrayOfOrigAnnoType = null; |
| Type targetContainerType = null; |
| MethodSymbol containerValueSymbol = null; |
| |
| Assert.check(!annotations.isEmpty() && !annotations.tail.isEmpty()); // i.e. size() > 1 |
| |
| int count = 0; |
| for (List<T> al = annotations; !al.isEmpty(); al = al.tail) { |
| count++; |
| |
| // There must be more than a single anno in the annotation list |
| Assert.check(count > 1 || !al.tail.isEmpty()); |
| |
| T currentAnno = al.head; |
| |
| origAnnoType = currentAnno.type; |
| if (arrayOfOrigAnnoType == null) { |
| arrayOfOrigAnnoType = types.makeArrayType(origAnnoType); |
| } |
| |
| // Only report errors if this isn't the first occurrence I.E. count > 1 |
| boolean reportError = count > 1; |
| Type currentContainerType = getContainingType(currentAnno, ctx.pos.get(currentAnno), reportError); |
| if (currentContainerType == null) { |
| continue; |
| } |
| // Assert that the target Container is == for all repeated |
| // annos of the same annotation type, the types should |
| // come from the same Symbol, i.e. be '==' |
| Assert.check(targetContainerType == null || currentContainerType == targetContainerType); |
| targetContainerType = currentContainerType; |
| |
| containerValueSymbol = validateContainer(targetContainerType, origAnnoType, ctx.pos.get(currentAnno)); |
| |
| if (containerValueSymbol == null) { // Check of CA type failed |
| // errors are already reported |
| continue; |
| } |
| |
| repeated = repeated.prepend(currentAnno); |
| } |
| |
| if (!repeated.isEmpty() && targetContainerType == null) { |
| log.error(ctx.pos.get(annotations.head), Errors.DuplicateAnnotationInvalidRepeated(origAnnoType)); |
| return null; |
| } |
| |
| if (!repeated.isEmpty()) { |
| repeated = repeated.reverse(); |
| DiagnosticPosition pos = ctx.pos.get(firstOccurrence); |
| TreeMaker m = make.at(pos); |
| Pair<MethodSymbol, Attribute> p = |
| new Pair<MethodSymbol, Attribute>(containerValueSymbol, |
| new Attribute.Array(arrayOfOrigAnnoType, repeated)); |
| if (ctx.isTypeCompound) { |
| /* TODO: the following code would be cleaner: |
| Attribute.TypeCompound at = new Attribute.TypeCompound(targetContainerType, List.of(p), |
| ((Attribute.TypeCompound)annotations.head).position); |
| JCTypeAnnotation annoTree = m.TypeAnnotation(at); |
| at = attributeTypeAnnotation(annoTree, targetContainerType, ctx.env); |
| */ |
| // However, we directly construct the TypeCompound to keep the |
| // direct relation to the contained TypeCompounds. |
| Attribute.TypeCompound at = new Attribute.TypeCompound(targetContainerType, List.of(p), |
| ((Attribute.TypeCompound)annotations.head).position); |
| |
| JCAnnotation annoTree = m.TypeAnnotation(at); |
| if (!chk.validateAnnotationDeferErrors(annoTree)) |
| log.error(annoTree.pos(), Errors.DuplicateAnnotationInvalidRepeated(origAnnoType)); |
| |
| if (!chk.isTypeAnnotation(annoTree, isTypeParam)) { |
| log.error(pos, isTypeParam ? Errors.InvalidRepeatableAnnotationNotApplicable(targetContainerType, on) |
| : Errors.InvalidRepeatableAnnotationNotApplicableInContext(targetContainerType)); |
| } |
| |
| at.setSynthesized(true); |
| |
| @SuppressWarnings("unchecked") |
| T x = (T) at; |
| return x; |
| } else { |
| Attribute.Compound c = new Attribute.Compound(targetContainerType, List.of(p)); |
| JCAnnotation annoTree = m.Annotation(c); |
| |
| if (!chk.annotationApplicable(annoTree, on)) { |
| log.error(annoTree.pos(), |
| Errors.InvalidRepeatableAnnotationNotApplicable(targetContainerType, on)); |
| } |
| |
| if (!chk.validateAnnotationDeferErrors(annoTree)) |
| log.error(annoTree.pos(), Errors.DuplicateAnnotationInvalidRepeated(origAnnoType)); |
| |
| c = attributeAnnotation(annoTree, targetContainerType, ctx.env); |
| c.setSynthesized(true); |
| |
| @SuppressWarnings("unchecked") |
| T x = (T) c; |
| return x; |
| } |
| } else { |
| return null; // errors should have been reported elsewhere |
| } |
| } |
| |
| /** |
| * 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); |
| } |
| |
| // returns null if t is same as 's', returns 't' otherwise |
| private Type filterSame(Type t, Type s) { |
| if (t == null || s == null) { |
| return t; |
| } |
| |
| return types.isSameType(t, s) ? null : t; |
| } |
| |
| /** Extract the actual Type to be used for a containing annotation. */ |
| private Type extractContainingType(Attribute.Compound ca, |
| DiagnosticPosition pos, |
| TypeSymbol annoDecl) |
| { |
| // The next three checks check that the Repeatable annotation |
| // on the declaration of the annotation type that is repeating is |
| // valid. |
| |
| // Repeatable must have at least one element |
| if (ca.values.isEmpty()) { |
| log.error(pos, Errors.InvalidRepeatableAnnotation(annoDecl)); |
| return null; |
| } |
| Pair<MethodSymbol,Attribute> p = ca.values.head; |
| Name name = p.fst.name; |
| if (name != names.value) { // should contain only one element, named "value" |
| log.error(pos, Errors.InvalidRepeatableAnnotation(annoDecl)); |
| return null; |
| } |
| if (!(p.snd instanceof Attribute.Class)) { // check that the value of "value" is an Attribute.Class |
| log.error(pos, Errors.InvalidRepeatableAnnotation(annoDecl)); |
| return null; |
| } |
| |
| return ((Attribute.Class)p.snd).getValue(); |
| } |
| |
| /* Validate that the suggested targetContainerType Type is a valid |
| * container type for repeated instances of originalAnnoType |
| * annotations. Return null and report errors if this is not the |
| * case, return the MethodSymbol of the value element in |
| * targetContainerType if it is suitable (this is needed to |
| * synthesize the container). */ |
| private MethodSymbol validateContainer(Type targetContainerType, |
| Type originalAnnoType, |
| DiagnosticPosition pos) { |
| MethodSymbol containerValueSymbol = null; |
| boolean fatalError = false; |
| |
| // Validate that there is a (and only 1) value method |
| Scope scope = targetContainerType.tsym.members(); |
| int nr_value_elems = 0; |
| boolean error = false; |
| for(Symbol elm : scope.getSymbolsByName(names.value)) { |
| nr_value_elems++; |
| |
| if (nr_value_elems == 1 && |
| elm.kind == MTH) { |
| containerValueSymbol = (MethodSymbol)elm; |
| } else { |
| error = true; |
| } |
| } |
| if (error) { |
| log.error(pos, |
| Errors.InvalidRepeatableAnnotationMultipleValues(targetContainerType, |
| nr_value_elems)); |
| return null; |
| } else if (nr_value_elems == 0) { |
| log.error(pos, |
| Errors.InvalidRepeatableAnnotationNoValue(targetContainerType)); |
| return null; |
| } |
| |
| // validate that the 'value' element is a method |
| // probably "impossible" to fail this |
| if (containerValueSymbol.kind != MTH) { |
| log.error(pos, |
| Errors.InvalidRepeatableAnnotationInvalidValue(targetContainerType)); |
| fatalError = true; |
| } |
| |
| // validate that the 'value' element has the correct return type |
| // i.e. array of original anno |
| Type valueRetType = containerValueSymbol.type.getReturnType(); |
| Type expectedType = types.makeArrayType(originalAnnoType); |
| if (!(types.isArray(valueRetType) && |
| types.isSameType(expectedType, valueRetType))) { |
| log.error(pos, |
| Errors.InvalidRepeatableAnnotationValueReturn(targetContainerType, |
| valueRetType, |
| expectedType)); |
| fatalError = true; |
| } |
| |
| return fatalError ? null : containerValueSymbol; |
| } |
| |
| private <T extends Attribute.Compound> T makeContainerAnnotation(List<T> toBeReplaced, |
| AnnotationContext<T> ctx, Symbol sym, boolean isTypeParam) |
| { |
| // Process repeated annotations |
| T validRepeated = |
| processRepeatedAnnotations(toBeReplaced, ctx, sym, isTypeParam); |
| |
| if (validRepeated != null) { |
| // Check that the container isn't manually |
| // present along with repeated instances of |
| // its contained annotation. |
| ListBuffer<T> manualContainer = ctx.annotated.get(validRepeated.type.tsym); |
| if (manualContainer != null) { |
| log.error(ctx.pos.get(manualContainer.first()), |
| Errors.InvalidRepeatableAnnotationRepeatedAndContainerPresent(manualContainer.first().type.tsym)); |
| } |
| } |
| |
| // A null return will delete the Placeholder |
| return validRepeated; |
| } |
| |
| /******************** |
| * Type annotations * |
| ********************/ |
| |
| /** |
| * Attribute the list of annotations and enter them onto s. |
| */ |
| public void enterTypeAnnotations(List<JCAnnotation> annotations, Env<AttrContext> env, |
| Symbol s, DiagnosticPosition deferPos, boolean isTypeParam) |
| { |
| Assert.checkNonNull(s, "Symbol argument to actualEnterTypeAnnotations is nul/"); |
| JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
| DiagnosticPosition prevLintPos = null; |
| |
| if (deferPos != null) { |
| prevLintPos = deferredLintHandler.setPos(deferPos); |
| } |
| try { |
| annotateNow(s, annotations, env, true, isTypeParam); |
| } finally { |
| if (prevLintPos != null) |
| deferredLintHandler.setPos(prevLintPos); |
| log.useSource(prev); |
| } |
| } |
| |
| /** |
| * Enqueue tree for scanning of type annotations, attaching to the Symbol sym. |
| */ |
| public void queueScanTreeAndTypeAnnotate(JCTree tree, Env<AttrContext> env, Symbol sym, |
| DiagnosticPosition deferPos) |
| { |
| Assert.checkNonNull(sym); |
| normal(() -> tree.accept(new TypeAnnotate(env, sym, deferPos))); |
| } |
| |
| /** |
| * Apply the annotations to the particular type. |
| */ |
| public void annotateTypeSecondStage(JCTree tree, List<JCAnnotation> annotations, Type storeAt) { |
| typeAnnotation(() -> { |
| List<Attribute.TypeCompound> compounds = fromAnnotations(annotations); |
| Assert.check(annotations.size() == compounds.size()); |
| storeAt.getMetadataOfKind(Kind.ANNOTATIONS).combine(new TypeMetadata.Annotations(compounds)); |
| }); |
| } |
| |
| /** |
| * Apply the annotations to the particular type. |
| */ |
| public void annotateTypeParameterSecondStage(JCTree tree, List<JCAnnotation> annotations) { |
| typeAnnotation(() -> { |
| List<Attribute.TypeCompound> compounds = fromAnnotations(annotations); |
| Assert.check(annotations.size() == compounds.size()); |
| }); |
| } |
| |
| /** |
| * We need to use a TreeScanner, because it is not enough to visit the top-level |
| * annotations. We also need to visit type arguments, etc. |
| */ |
| private class TypeAnnotate extends TreeScanner { |
| private final Env<AttrContext> env; |
| private final Symbol sym; |
| private DiagnosticPosition deferPos; |
| |
| public TypeAnnotate(Env<AttrContext> env, Symbol sym, DiagnosticPosition deferPos) { |
| |
| this.env = env; |
| this.sym = sym; |
| this.deferPos = deferPos; |
| } |
| |
| @Override |
| public void visitAnnotatedType(JCAnnotatedType tree) { |
| enterTypeAnnotations(tree.annotations, env, sym, deferPos, false); |
| scan(tree.underlyingType); |
| } |
| |
| @Override |
| public void visitTypeParameter(JCTypeParameter tree) { |
| enterTypeAnnotations(tree.annotations, env, sym, deferPos, true); |
| scan(tree.bounds); |
| } |
| |
| @Override |
| public void visitNewArray(JCNewArray tree) { |
| enterTypeAnnotations(tree.annotations, env, sym, deferPos, false); |
| for (List<JCAnnotation> dimAnnos : tree.dimAnnotations) |
| enterTypeAnnotations(dimAnnos, env, sym, deferPos, false); |
| scan(tree.elemtype); |
| scan(tree.elems); |
| } |
| |
| @Override |
| public void visitMethodDef(JCMethodDecl tree) { |
| scan(tree.mods); |
| scan(tree.restype); |
| scan(tree.typarams); |
| scan(tree.recvparam); |
| scan(tree.params); |
| scan(tree.thrown); |
| scan(tree.defaultValue); |
| // Do not annotate the body, just the signature. |
| } |
| |
| @Override |
| public void visitVarDef(JCVariableDecl tree) { |
| DiagnosticPosition prevPos = deferPos; |
| deferPos = tree.pos(); |
| try { |
| if (sym != null && sym.kind == VAR) { |
| // Don't visit a parameter once when the sym is the method |
| // and once when the sym is the parameter. |
| scan(tree.mods); |
| scan(tree.vartype); |
| } |
| scan(tree.init); |
| } finally { |
| deferPos = prevPos; |
| } |
| } |
| |
| @Override |
| public void visitClassDef(JCClassDecl tree) { |
| // We can only hit a classdef if it is declared within |
| // a method. Ignore it - the class will be visited |
| // separately later. |
| } |
| |
| @Override |
| public void visitNewClass(JCNewClass tree) { |
| scan(tree.encl); |
| scan(tree.typeargs); |
| scan(tree.clazz); |
| scan(tree.args); |
| // the anonymous class instantiation if any will be visited separately. |
| } |
| } |
| |
| /********************* |
| * Completer support * |
| *********************/ |
| |
| private AnnotationTypeCompleter theSourceCompleter = new AnnotationTypeCompleter() { |
| @Override |
| public void complete(ClassSymbol sym) throws CompletionFailure { |
| Env<AttrContext> context = typeEnvs.get(sym); |
| Annotate.this.attributeAnnotationType(context); |
| } |
| }; |
| |
| /* Last stage completer to enter just enough annotations to have a prototype annotation type. |
| * This currently means entering @Target and @Repetable. |
| */ |
| public AnnotationTypeCompleter annotationTypeSourceCompleter() { |
| return theSourceCompleter; |
| } |
| |
| private void attributeAnnotationType(Env<AttrContext> env) { |
| Assert.check(((JCClassDecl)env.tree).sym.isAnnotationType(), |
| "Trying to annotation type complete a non-annotation type"); |
| |
| JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
| try { |
| JCClassDecl tree = (JCClassDecl)env.tree; |
| AnnotationTypeVisitor v = new AnnotationTypeVisitor(attr, chk, syms, typeEnvs); |
| v.scanAnnotationType(tree); |
| tree.sym.getAnnotationTypeMetadata().setRepeatable(v.repeatable); |
| tree.sym.getAnnotationTypeMetadata().setTarget(v.target); |
| } finally { |
| log.useSource(prev); |
| } |
| } |
| |
| public Attribute unfinishedDefaultValue() { |
| return theUnfinishedDefaultValue; |
| } |
| |
| public static interface AnnotationTypeCompleter { |
| void complete(ClassSymbol sym) throws CompletionFailure; |
| } |
| |
| /** Visitor to determine a prototype annotation type for a class declaring an annotation type. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class AnnotationTypeVisitor extends TreeScanner { |
| private Env<AttrContext> env; |
| |
| private final Attr attr; |
| private final Check check; |
| private final Symtab tab; |
| private final TypeEnvs typeEnvs; |
| |
| private Compound target; |
| private Compound repeatable; |
| |
| public AnnotationTypeVisitor(Attr attr, Check check, Symtab tab, TypeEnvs typeEnvs) { |
| this.attr = attr; |
| this.check = check; |
| this.tab = tab; |
| this.typeEnvs = typeEnvs; |
| } |
| |
| public Compound getRepeatable() { |
| return repeatable; |
| } |
| |
| public Compound getTarget() { |
| return target; |
| } |
| |
| public void scanAnnotationType(JCClassDecl decl) { |
| visitClassDef(decl); |
| } |
| |
| @Override |
| public void visitClassDef(JCClassDecl tree) { |
| Env<AttrContext> prevEnv = env; |
| env = typeEnvs.get(tree.sym); |
| try { |
| scan(tree.mods); // look for repeatable and target |
| // don't descend into body |
| } finally { |
| env = prevEnv; |
| } |
| } |
| |
| @Override |
| public void visitAnnotation(JCAnnotation tree) { |
| Type t = tree.annotationType.type; |
| if (t == null) { |
| t = attr.attribType(tree.annotationType, env); |
| tree.annotationType.type = t = check.checkType(tree.annotationType.pos(), t, tab.annotationType); |
| } |
| |
| if (t == tab.annotationTargetType) { |
| target = Annotate.this.attributeAnnotation(tree, tab.annotationTargetType, env); |
| } else if (t == tab.repeatableType) { |
| repeatable = Annotate.this.attributeAnnotation(tree, tab.repeatableType, env); |
| } |
| } |
| } |
| |
| /** Represents the semantics of an Annotation Type. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public static class AnnotationTypeMetadata { |
| final ClassSymbol metaDataFor; |
| private Compound target; |
| private Compound repeatable; |
| private AnnotationTypeCompleter annotationTypeCompleter; |
| |
| public AnnotationTypeMetadata(ClassSymbol metaDataFor, AnnotationTypeCompleter annotationTypeCompleter) { |
| this.metaDataFor = metaDataFor; |
| this.annotationTypeCompleter = annotationTypeCompleter; |
| } |
| |
| private void init() { |
| // Make sure metaDataFor is member entered |
| while (!metaDataFor.isCompleted()) |
| metaDataFor.complete(); |
| |
| if (annotationTypeCompleter != null) { |
| AnnotationTypeCompleter c = annotationTypeCompleter; |
| annotationTypeCompleter = null; |
| c.complete(metaDataFor); |
| } |
| } |
| |
| public void complete() { |
| init(); |
| } |
| |
| public Compound getRepeatable() { |
| init(); |
| return repeatable; |
| } |
| |
| public void setRepeatable(Compound repeatable) { |
| Assert.checkNull(this.repeatable); |
| this.repeatable = repeatable; |
| } |
| |
| public Compound getTarget() { |
| init(); |
| return target; |
| } |
| |
| public void setTarget(Compound target) { |
| Assert.checkNull(this.target); |
| this.target = target; |
| } |
| |
| public Set<MethodSymbol> getAnnotationElements() { |
| init(); |
| Set<MethodSymbol> members = new LinkedHashSet<>(); |
| WriteableScope s = metaDataFor.members(); |
| Iterable<Symbol> ss = s.getSymbols(NON_RECURSIVE); |
| for (Symbol sym : ss) |
| if (sym.kind == MTH && |
| sym.name != sym.name.table.names.clinit && |
| (sym.flags() & SYNTHETIC) == 0) |
| members.add((MethodSymbol)sym); |
| return members; |
| } |
| |
| public Set<MethodSymbol> getAnnotationElementsWithDefault() { |
| init(); |
| Set<MethodSymbol> members = getAnnotationElements(); |
| Set<MethodSymbol> res = new LinkedHashSet<>(); |
| for (MethodSymbol m : members) |
| if (m.defaultValue != null) |
| res.add(m); |
| return res; |
| } |
| |
| @Override |
| public String toString() { |
| return "Annotation type for: " + metaDataFor; |
| } |
| |
| public boolean isMetadataForAnnotationType() { return true; } |
| |
| public static AnnotationTypeMetadata notAnAnnotationType() { |
| return NOT_AN_ANNOTATION_TYPE; |
| } |
| |
| private static final AnnotationTypeMetadata NOT_AN_ANNOTATION_TYPE = |
| new AnnotationTypeMetadata(null, null) { |
| @Override |
| public void complete() { |
| } // do nothing |
| |
| @Override |
| public String toString() { |
| return "Not an annotation type"; |
| } |
| |
| @Override |
| public Set<MethodSymbol> getAnnotationElements() { |
| return new LinkedHashSet<>(0); |
| } |
| |
| @Override |
| public Set<MethodSymbol> getAnnotationElementsWithDefault() { |
| return new LinkedHashSet<>(0); |
| } |
| |
| @Override |
| public boolean isMetadataForAnnotationType() { |
| return false; |
| } |
| |
| @Override |
| public Compound getTarget() { |
| return null; |
| } |
| |
| @Override |
| public Compound getRepeatable() { |
| return null; |
| } |
| }; |
| } |
| |
| public void newRound() { |
| blockCount = 1; |
| } |
| } |
