--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Attribute.java Sun Aug 17 15:52:32 2014 +0100
@@ -0,0 +1,364 @@
+/*
+ * Copyright (c) 2003, 2013, 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.code;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import javax.lang.model.element.AnnotationMirror;
+import javax.lang.model.element.AnnotationValue;
+import javax.lang.model.element.AnnotationValueVisitor;
+import javax.lang.model.type.DeclaredType;
+import com.sun.tools.javac.code.Symbol.*;
+import com.sun.tools.javac.util.*;
+
+/** An annotation value.
+ *
+ * <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 abstract class Attribute implements AnnotationValue {
+
+ /** The type of the annotation element. */
+ public Type type;
+
+ public Attribute(Type type) {
+ this.type = type;
+ }
+
+ public abstract void accept(Visitor v);
+
+ public Object getValue() {
+ throw new UnsupportedOperationException();
+ }
+
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ throw new UnsupportedOperationException();
+ }
+
+ public boolean isSynthesized() {
+ return false;
+ }
+
+ public TypeAnnotationPosition getPosition() { return null; }
+
+ /** The value for an annotation element of primitive type or String. */
+ public static class Constant extends Attribute {
+ public final Object value;
+ public void accept(Visitor v) { v.visitConstant(this); }
+ public Constant(Type type, Object value) {
+ super(type);
+ this.value = value;
+ }
+ public String toString() {
+ return Constants.format(value, type);
+ }
+ public Object getValue() {
+ return Constants.decode(value, type);
+ }
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ if (value instanceof String)
+ return v.visitString((String) value, p);
+ if (value instanceof Integer) {
+ int i = (Integer) value;
+ switch (type.getTag()) {
+ case BOOLEAN: return v.visitBoolean(i != 0, p);
+ case CHAR: return v.visitChar((char) i, p);
+ case BYTE: return v.visitByte((byte) i, p);
+ case SHORT: return v.visitShort((short) i, p);
+ case INT: return v.visitInt(i, p);
+ }
+ }
+ switch (type.getTag()) {
+ case LONG: return v.visitLong((Long) value, p);
+ case FLOAT: return v.visitFloat((Float) value, p);
+ case DOUBLE: return v.visitDouble((Double) value, p);
+ }
+ throw new AssertionError("Bad annotation element value: " + value);
+ }
+ }
+
+ /** The value for an annotation element of type java.lang.Class,
+ * represented as a ClassSymbol.
+ */
+ public static class Class extends Attribute {
+ public final Type classType;
+ public void accept(Visitor v) { v.visitClass(this); }
+ public Class(Types types, Type type) {
+ super(makeClassType(types, type));
+ this.classType = type;
+ }
+ static Type makeClassType(Types types, Type type) {
+ Type arg = type.isPrimitive()
+ ? types.boxedClass(type).type
+ : types.erasure(type);
+ return new Type.ClassType(types.syms.classType.getEnclosingType(),
+ List.of(arg),
+ types.syms.classType.tsym,
+ Type.noAnnotations);
+ }
+ public String toString() {
+ return classType + ".class";
+ }
+ public Type getValue() {
+ return classType;
+ }
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ return v.visitType(classType, p);
+ }
+ }
+
+ /** A compound annotation element value, the type of which is an
+ * attribute interface.
+ */
+ public static class Compound extends Attribute implements AnnotationMirror {
+ /** The attributes values, as pairs. Each pair contains a
+ * reference to the accessing method in the attribute interface
+ * and the value to be returned when that method is called to
+ * access this attribute.
+ */
+ public final List<Pair<MethodSymbol,Attribute>> values;
+ public final TypeAnnotationPosition position;
+
+ private boolean synthesized = false;
+
+ @Override
+ public boolean isSynthesized() {
+ return synthesized;
+ }
+
+ public void setSynthesized(boolean synthesized) {
+ this.synthesized = synthesized;
+ }
+
+ public Compound(Type type,
+ List<Pair<MethodSymbol,Attribute>> values,
+ TypeAnnotationPosition position) {
+ super(type);
+ this.values = values;
+ this.position = position;
+ }
+
+ public Compound(Type type,
+ List<Pair<MethodSymbol,Attribute>> values) {
+ this(type, values, null);
+ }
+
+ @Override
+ public TypeAnnotationPosition getPosition() {
+ return position;
+ }
+
+ public void accept(Visitor v) { v.visitCompound(this); }
+
+ /**
+ * Returns a string representation of this annotation.
+ * String is of one of the forms:
+ * @com.example.foo(name1=val1, name2=val2)
+ * @com.example.foo(val)
+ * @com.example.foo
+ * Omit parens for marker annotations, and omit "value=" when allowed.
+ */
+ public String toString() {
+ StringBuilder buf = new StringBuilder();
+ buf.append("@");
+ buf.append(type);
+ int len = values.length();
+ if (len > 0) {
+ buf.append('(');
+ boolean first = true;
+ for (Pair<MethodSymbol, Attribute> value : values) {
+ if (!first) buf.append(", ");
+ first = false;
+
+ Name name = value.fst.name;
+ if (len > 1 || name != name.table.names.value) {
+ buf.append(name);
+ buf.append('=');
+ }
+ buf.append(value.snd);
+ }
+ buf.append(')');
+ }
+ return buf.toString();
+ }
+
+ public Attribute member(Name member) {
+ Pair<MethodSymbol,Attribute> res = getElemPair(member);
+ return res == null ? null : res.snd;
+ }
+
+ private Pair<MethodSymbol, Attribute> getElemPair(Name member) {
+ for (Pair<MethodSymbol,Attribute> pair : values)
+ if (pair.fst.name == member) return pair;
+ return null;
+ }
+
+ public Attribute.Compound getValue() {
+ return this;
+ }
+
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ return v.visitAnnotation(this, p);
+ }
+
+ public DeclaredType getAnnotationType() {
+ return (DeclaredType) type;
+ }
+
+ public Map<MethodSymbol, Attribute> getElementValues() {
+ Map<MethodSymbol, Attribute> valmap = new LinkedHashMap<>();
+ for (Pair<MethodSymbol, Attribute> value : values)
+ valmap.put(value.fst, value.snd);
+ return valmap;
+ }
+
+ public TypeCompound toTypeCompound() {
+ // It is safe to alias the position.
+ return new TypeCompound(this, this.position);
+ }
+
+ }
+
+ public static class TypeCompound extends Compound {
+ public TypeCompound(Compound compound,
+ TypeAnnotationPosition position) {
+ super(compound.type, compound.values, position);
+ }
+
+ public TypeCompound(Type type,
+ List<Pair<MethodSymbol,Attribute>> values,
+ TypeAnnotationPosition position) {
+ super(type, values, position);
+ }
+ }
+
+ /** The value for an annotation element of an array type.
+ */
+ public static class Array extends Attribute {
+ public final Attribute[] values;
+ public Array(Type type, Attribute[] values) {
+ super(type);
+ this.values = values;
+ }
+
+ public Array(Type type, List<Attribute> values) {
+ super(type);
+ this.values = values.toArray(new Attribute[values.size()]);
+ }
+
+ public void accept(Visitor v) { v.visitArray(this); }
+ public String toString() {
+ StringBuilder buf = new StringBuilder();
+ buf.append('{');
+ boolean first = true;
+ for (Attribute value : values) {
+ if (!first)
+ buf.append(", ");
+ first = false;
+ buf.append(value);
+ }
+ buf.append('}');
+ return buf.toString();
+ }
+ public List<Attribute> getValue() {
+ return List.from(values);
+ }
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ return v.visitArray(getValue(), p);
+ }
+
+ @Override
+ public TypeAnnotationPosition getPosition() {
+ if (values.length != 0)
+ return values[0].getPosition();
+ else
+ return null;
+ }
+ }
+
+ /** The value for an annotation element of an enum type.
+ */
+ public static class Enum extends Attribute {
+ public VarSymbol value;
+ public Enum(Type type, VarSymbol value) {
+ super(type);
+ this.value = Assert.checkNonNull(value);
+ }
+ public void accept(Visitor v) { v.visitEnum(this); }
+ public String toString() {
+ return value.enclClass() + "." + value; // qualified name
+ }
+ public VarSymbol getValue() {
+ return value;
+ }
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ return v.visitEnumConstant(value, p);
+ }
+ }
+
+ public static class Error extends Attribute {
+ public Error(Type type) {
+ super(type);
+ }
+ public void accept(Visitor v) { v.visitError(this); }
+ public String toString() {
+ return "<error>";
+ }
+ public String getValue() {
+ return toString();
+ }
+ public <R, P> R accept(AnnotationValueVisitor<R, P> v, P p) {
+ return v.visitString(toString(), p);
+ }
+ }
+
+ public static class UnresolvedClass extends Error {
+ public Type classType;
+ public UnresolvedClass(Type type, Type classType) {
+ super(type);
+ this.classType = classType;
+ }
+ }
+
+ /** A visitor type for dynamic dispatch on the kind of attribute value. */
+ public static interface Visitor {
+ void visitConstant(Attribute.Constant value);
+ void visitClass(Attribute.Class clazz);
+ void visitCompound(Attribute.Compound compound);
+ void visitArray(Attribute.Array array);
+ void visitEnum(Attribute.Enum e);
+ void visitError(Attribute.Error e);
+ }
+
+ /** A mirror of java.lang.annotation.RetentionPolicy. */
+ public static enum RetentionPolicy {
+ SOURCE,
+ CLASS,
+ RUNTIME
+ }
+}