tree.java

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

         * Used for instances of {@link BinaryTree} representing
         * multiplication {@code *}.
         */
        MULTIPLY(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * division {@code /}.
         */
        DIVIDE(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * remainder {@code %}.
         */
        REMAINDER(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * addition or string concatenation {@code +}.
         */
        PLUS(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * subtraction {@code -}.
         */
        MINUS(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * left shift {@code <<}.
         */
        LEFT_SHIFT(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * right shift {@code >>}.
         */
        RIGHT_SHIFT(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * unsigned right shift {@code >>>}.
         */
        UNSIGNED_RIGHT_SHIFT(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * less-than {@code <}.
         */
        LESS_THAN(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * greater-than {@code >}.
         */
        GREATER_THAN(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * less-than-equal {@code <=}.
         */
        LESS_THAN_EQUAL(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * greater-than-equal {@code >=}.
         */
        GREATER_THAN_EQUAL(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * equal-to {@code ==}.
         */
        EQUAL_TO(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * not-equal-to {@code !=}.
         */
        NOT_EQUAL_TO(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * bitwise and logical "and" {@code &}.
         */
        AND(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * bitwise and logical "xor" {@code ^}.
         */
        XOR(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * bitwise and logical "or" {@code |}.
         */
        OR(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * conditional-and {@code &&}.
         */
        CONDITIONAL_AND(BinaryTree.class),

        /**
         * Used for instances of {@link BinaryTree} representing
         * conditional-or {@code ||}.
         */
        CONDITIONAL_OR(BinaryTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * multiplication assignment {@code *=}.
         */
        MULTIPLY_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * division assignment {@code /=}.
         */
        DIVIDE_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * remainder assignment {@code %=}.
         */
        REMAINDER_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * addition or string concatenation assignment {@code +=}.
         */
        PLUS_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * subtraction assignment {@code -=}.
         */
        MINUS_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * left shift assignment {@code <<=}.
         */
        LEFT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * right shift assignment {@code >>=}.
         */
        RIGHT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * unsigned right shift assignment {@code >>>=}.
         */
        UNSIGNED_RIGHT_SHIFT_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * bitwise and logical "and" assignment {@code &=}.
         */
        AND_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * bitwise and logical "xor" assignment {@code ^=}.
         */
        XOR_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link CompoundAssignmentTree} representing
         * bitwise and logical "or" assignment {@code |=}.
         */
        OR_ASSIGNMENT(CompoundAssignmentTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * an integral literal expression of type {@code int}.
         */
        INT_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * an integral literal expression of type {@code long}.
         */
        LONG_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * a floating-point literal expression of type {@code float}.
         */
        FLOAT_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * a floating-point literal expression of type {@code double}.
         */
        DOUBLE_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * a boolean literal expression of type {@code boolean}.
         */
        BOOLEAN_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * a character literal expression of type {@code char}.
         */
        CHAR_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link LiteralTree} representing
         * a string literal expression of type {@link String}.
         */
        STRING_LITERAL(LiteralTree.class),
	
	/**
	 * Used for instances of {@link LiteralTree} representing
	 * the use of {@code null}.
	 */
	NULL_LITERAL(LiteralTree.class),

        /**
         * Used for instances of {@link WildcardTree} representing
         * an unbounded wildcard type argument.
         */
        UNBOUNDED_WILDCARD(WildcardTree.class),

        /**
         * Used for instances of {@link WildcardTree} representing
         * an extends bounded wildcard type argument.
         */
        EXTENDS_WILDCARD(WildcardTree.class),

        /**
         * Used for instances of {@link WildcardTree} representing
         * a super bounded wildcard type argument.
         */
        SUPER_WILDCARD(WildcardTree.class),

        /**
         * Used for instances of {@link ErroneousTree}.
         */
        ERRONEOUS(ErroneousTree.class),

        /**
         * An implementation-reserved node. This is the not the node
         * you are looking for.
         */
        OTHER(null);
                
        
        Kind(Class<? extends Tree> intf) {
            associatedInterface = intf;
        }
                
        public Class<? extends Tree> asInterface() {
            return associatedInterface;
        }
        
        private final Class<? extends Tree> associatedInterface;
    }
    
    /**
     * Gets the kind of this tree.
     *
     * @return the kind of this tree.
     */
    Kind getKind();
    
    /**
     * Accept method used to implement the visitor pattern.  The
     * visitor pattern is used to implement operations on trees.
     *
     * @param <R> result type of this operation.
     * @param <D> type of additonal data.
     */
    <R,D> R accept(TreeVisitor<R,D> visitor, D data);
}