tree.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)Tree.java	1.8 06/08/03
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 * Use and Distribution is subject to the Java Research License available
 * at <http://wwws.sun.com/software/communitysource/jrl.html>.
 */

package com.sun.source.tree;

/**
 * Common interface for all nodes in an abstract syntax tree.
 *
 * <p><b>WARNING:</b> This interface and its sub-interfaces are 
 * subject to change as the Java&trade; programming language evolves.
 * These interfaces are implemented by Sun's Java compiler (javac) 
 * and should not be implemented either directly or indirectly by 
 * other applications.
 *
 * @author Peter von der Ah&eacute;
 * @author Jonathan Gibbons
 *
 * @since 1.6
 */
public interface Tree {
    
    /**
     * Enumerates all kinds of trees.
     */
    public enum Kind {
        /**
         * Used for instances of {@link AnnotationTree}.
         */
        ANNOTATION(AnnotationTree.class),

        /**
         * Used for instances of {@link ArrayAccessTree}.
         */
        ARRAY_ACCESS(ArrayAccessTree.class),

        /**
         * Used for instances of {@link ArrayTypeTree}.
         */
        ARRAY_TYPE(ArrayTypeTree.class),

        /**
         * Used for instances of {@link AssertTree}.
         */
        ASSERT(AssertTree.class),

        /**
         * Used for instances of {@link AssignmentTree}.
         */
        ASSIGNMENT(AssignmentTree.class),

        /**
         * Used for instances of {@link BlockTree}.
         */
        BLOCK(BlockTree.class),

        /**
         * Used for instances of {@link BreakTree}.
         */
        BREAK(BreakTree.class),

        /**
         * Used for instances of {@link CaseTree}.
         */
        CASE(CaseTree.class),

        /**
         * Used for instances of {@link CatchTree}.
         */
        CATCH(CatchTree.class),

        /**
         * Used for instances of {@link ClassTree}.
         */
        CLASS(ClassTree.class),

        /**
         * Used for instances of {@link CompilationUnitTree}.
         */
        COMPILATION_UNIT(CompilationUnitTree.class),

        /**
         * Used for instances of {@link ConditionalExpressionTree}.
         */
        CONDITIONAL_EXPRESSION(ConditionalExpressionTree.class),

        /**
         * Used for instances of {@link ContinueTree}.
         */
        CONTINUE(ContinueTree.class),

        /**
         * Used for instances of {@link DoWhileLoopTree}.
         */
        DO_WHILE_LOOP(DoWhileLoopTree.class),

        /**
         * Used for instances of {@link EnhancedForLoopTree}.
         */
        ENHANCED_FOR_LOOP(EnhancedForLoopTree.class),

        /**
         * Used for instances of {@link ExpressionStatementTree}.
         */
        EXPRESSION_STATEMENT(ExpressionStatementTree.class),

        /**
         * Used for instances of {@link MemberSelectTree}.
         */
        MEMBER_SELECT(MemberSelectTree.class),

        /**
         * Used for instances of {@link ForLoopTree}.
         */
        FOR_LOOP(ForLoopTree.class),

        /**
         * Used for instances of {@link IdentifierTree}.
         */
        IDENTIFIER(IdentifierTree.class),

        /**
         * Used for instances of {@link IfTree}.
         */
        IF(IfTree.class),

        /**
         * Used for instances of {@link ImportTree}.
         */
        IMPORT(ImportTree.class),

        /**
         * Used for instances of {@link InstanceOfTree}.
         */
        INSTANCE_OF(InstanceOfTree.class),

        /**
         * Used for instances of {@link LabeledStatementTree}.
         */
        LABELED_STATEMENT(LabeledStatementTree.class),

        /**
         * Used for instances of {@link MethodTree}.
         */
        METHOD(MethodTree.class),

        /**
         * Used for instances of {@link MethodInvocationTree}.
         */
        METHOD_INVOCATION(MethodInvocationTree.class),

        /**
         * Used for instances of {@link ModifiersTree}.
         */
        MODIFIERS(ModifiersTree.class),

        /**
         * Used for instances of {@link NewArrayTree}.
         */
        NEW_ARRAY(NewArrayTree.class),

        /**
         * Used for instances of {@link NewClassTree}.
         */
        NEW_CLASS(NewClassTree.class),

        /**
         * Used for instances of {@link ParenthesizedTree}.
         */
        PARENTHESIZED(ParenthesizedTree.class),

        /**
         * Used for instances of {@link PrimitiveTypeTree}.
         */
        PRIMITIVE_TYPE(PrimitiveTypeTree.class),

        /**
         * Used for instances of {@link ReturnTree}.
         */
        RETURN(ReturnTree.class),

        /**
         * Used for instances of {@link EmptyStatementTree}.
         */
        EMPTY_STATEMENT(EmptyStatementTree.class),

        /**
         * Used for instances of {@link SwitchTree}.
         */
        SWITCH(SwitchTree.class),

        /**
         * Used for instances of {@link SynchronizedTree}.
         */
        SYNCHRONIZED(SynchronizedTree.class),

        /**
         * Used for instances of {@link ThrowTree}.
         */
        THROW(ThrowTree.class),

        /**
         * Used for instances of {@link TryTree}.
         */
        TRY(TryTree.class),

        /**
         * Used for instances of {@link ParameterizedTypeTree}.
         */
        PARAMETERIZED_TYPE(ParameterizedTypeTree.class),

        /**
         * Used for instances of {@link TypeCastTree}.
         */
        TYPE_CAST(TypeCastTree.class),

        /**
         * Used for instances of {@link TypeParameterTree}.
         */
        TYPE_PARAMETER(TypeParameterTree.class),

        /**
         * Used for instances of {@link VariableTree}.
         */
        VARIABLE(VariableTree.class),

        /**
         * Used for instances of {@link WhileLoopTree}.
         */
        WHILE_LOOP(WhileLoopTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing postfix
         * increment operator {@code ++}.
         */
        POSTFIX_INCREMENT(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing postfix
         * decrement operator {@code --}.
         */
        POSTFIX_DECREMENT(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing prefix
         * increment operator {@code ++}.
         */
        PREFIX_INCREMENT(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing prefix
         * decrement operator {@code --}.
         */
        PREFIX_DECREMENT(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing unary plus
         * operator {@code +}.
         */
        UNARY_PLUS(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing unary minus
         * operator {@code -}.
         */
        UNARY_MINUS(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing bitwise
         * complement operator {@code ~}.
         */
        BITWISE_COMPLEMENT(UnaryTree.class),

        /**
         * Used for instances of {@link UnaryTree} representing logical
         * complement operator {@code !}.
         */
        LOGICAL_COMPLEMENT(UnaryTree.class),

        /**