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Diffstat (limited to 'javax/lang/model/util/TypeKindVisitor6.java')
| -rw-r--r-- | javax/lang/model/util/TypeKindVisitor6.java | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/javax/lang/model/util/TypeKindVisitor6.java b/javax/lang/model/util/TypeKindVisitor6.java new file mode 100644 index 000000000..7cde08cf7 --- /dev/null +++ b/javax/lang/model/util/TypeKindVisitor6.java @@ -0,0 +1,324 @@ +/* TypeKindVisitor6.java -- A type visitor implementation for 1.6. + Copyright (C) 2015 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath 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, or (at your option) +any later version. + +GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package javax.lang.model.util; + +import javax.annotation.processing.SupportedSourceVersion; + +import javax.lang.model.SourceVersion; +import javax.lang.model.type.NoType; +import javax.lang.model.type.PrimitiveType; + +/** + * <p>An implementation of {@link TypeVisitor} for the + * 1.6 version of the Java programming language + * ({@link SourceVersion#RELEASE_6}) which redirects each + * {@code visitXYZ} method call to a more specific + * {@code visitXYZAsKind} method, depending on the kind + * of the first argument. For example, a call to + * {@code visitNoType} redirects to {@code visitNoTypeAsNone}, + * {@code visitNoTypeAsPackage} or {@code visitNoTypeAsVoid}, + * depending on the type of {@code NoType} supplied. {@code visitXYZAsKind} then + * redirects to {@code defaultAction(element, parameter)}. + * Implementors may extend this class and provide alternative + * implementations of {@link #defaultAction(TypeMirror, P)} and + * the {@code visitXYZKind} methods as appropriate.</p> + * <p>As the interface this class implements may be extended in future, + * in order to support later language versions, methods beginning with + * the phrase {@code "visit"} should be avoided in subclasses. This + * class itself will be extended to direct these new methods to the + * {@link #visitUnknown(TypeMirror,P)} method and a new class will be + * added to provide implementations for the new language version. + * At this time, all or some of this class may be deprecated.</p> + * + * @param <R> the return type of the visitor's methods. {@code Void} + * can be used where there is no return value. + * @param <P> the type of the additional parameter supplied to the visitor's + * methods. {@code Void} can be used if this is not needed. + * + * @author Andrew John Hughes (gnu_andrew@member.fsf.org) + * @since 1.6 + */ +@SupportedSourceVersion(SourceVersion.RELEASE_6) +public class TypeKindVisitor6<R,P> extends SimpleTypeVisitor6<R,P> +{ + + /** + * Constructs a new {@link TypeKindVisitor6} with a {@code null} + * default value. + */ + protected TypeKindVisitor6() + { + this(null); + } + + /** + * Constructs a new {@link TypeKindVisitor6} with the specified + * default value. + * + * @param defaultValue the value to assign to {@link SimpleTypeVisitor6#DEFAULT_VALUE}. + */ + protected TypeKindVisitor6(R defaultValue) + { + super(defaultValue); + } + + /** + * Visits a {@code NoType} instance. This implementation dispatches + * the call to the appropriate visit method, corresponding to the + * exact kind of {@code NoType}: {@code NONE}, {@code PACKAGE} or + * {@code VOID}. For example, a package type will be redirected to the + * {@link visitNoTypeAsPackage(NoType,P)} method. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of the kind-specific method. + */ + @Override + public R visitNoType(NoType type, P parameter) + { + switch (type.getKind()) + { + case NONE: + return visitNoTypeAsNone(type, parameter); + case PACKAGE: + return visitNoTypeAsPackage(type, parameter); + case VOID: + return visitNoTypeAsVoid(type, parameter); + default: + return super.visitNoType(type, parameter); + } + } + + /** + * Visits a {@code NONE} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitNoTypeAsNone(NoType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code PACKAGE} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitNoTypeAsPackage(NoType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code VOID} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitNoTypeAsVoid(NoType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a primitive type. This implementation dispatches + * the call to the appropriate visit method, corresponding to the + * exact kind of primitive: {@code BOOLEAN}, {@code BYTE}, + * {@code CHAR}, {@code DOUBLE}, {@code FLOAT}, {@code INT}, + * {@code LONG} or {@code SHORT}. For example, a boolean will be + * redirected to the {@link visitPrimitiveAsBoolean(PrimitiveType,P)} + * method. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of the kind-specific method. + */ + @Override + public R visitPrimitive(PrimitiveType type, P parameter) + { + switch (type.getKind()) + { + case BOOLEAN: + return visitPrimitiveAsBoolean(type, parameter); + case BYTE: + return visitPrimitiveAsByte(type, parameter); + case CHAR: + return visitPrimitiveAsChar(type, parameter); + case DOUBLE: + return visitPrimitiveAsDouble(type, parameter); + case FLOAT: + return visitPrimitiveAsFloat(type, parameter); + case INT: + return visitPrimitiveAsInt(type, parameter); + case LONG: + return visitPrimitiveAsLong(type, parameter); + case SHORT: + return visitPrimitiveAsShort(type, parameter); + default: + return super.visitPrimitive(type, parameter); + } + } + + /** + * Visits a {@code BOOLEAN} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsBoolean(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code BYTE} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsByte(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code CHAR} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsChar(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code DOUBLE} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsDouble(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code FLOAT} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsFloat(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code INT} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsInt(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code LONG} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsLong(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + + /** + * Visits a {@code SHORT} type. This implementation + * simply calls {@code defaultAction(type, parameter)}. + * + * @param type the type to visit. + * @param parameter the additional parameter, specific to the visitor. + * May be {@code null}. + * @return the result of {@code defaultAction(type, parameter)}. + */ + public R visitPrimitiveAsShort(PrimitiveType type, P parameter) + { + return defaultAction(type, parameter); + } + +} + + |