astnulltype.java

来自「linux下建立JAVA虚拟机的源码KAFFE」· Java 代码 · 共 108 行

package antlr;

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.cs.usfca.edu
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id: ASTNULLType.java,v 1.2 2005/12/24 21:50:48 robilad Exp $
 */

import antlr.collections.AST;
import antlr.collections.ASTEnumeration;
import antlr.Token;

/** There is only one instance of this class **/
public class ASTNULLType implements AST {
    public void addChild(AST c) {
    }

    public boolean equals(AST t) {
        return false;
    }

    public boolean equalsList(AST t) {
        return false;
    }

    public boolean equalsListPartial(AST t) {
        return false;
    }

    public boolean equalsTree(AST t) {
        return false;
    }

    public boolean equalsTreePartial(AST t) {
        return false;
    }

    public ASTEnumeration findAll(AST tree) {
        return null;
    }

    public ASTEnumeration findAllPartial(AST subtree) {
        return null;
    }

    public AST getFirstChild() {
        return this;
    }

    public AST getNextSibling() {
        return this;
    }

    public String getText() {
        return "<ASTNULL>";
    }

    public int getType() {
        return Token.NULL_TREE_LOOKAHEAD;
    }

    public int getLine() {
        return 0;
    }

    public int getColumn() {
        return 0;
    }

	public int getNumberOfChildren() {
		return 0;
	}

    public void initialize(int t, String txt) {
    }

    public void initialize(AST t) {
    }

    public void initialize(Token t) {
    }

    public void setFirstChild(AST c) {
    }

    public void setNextSibling(AST n) {
    }

    public void setText(String text) {
    }

    public void setType(int ttype) {
    }

    public String toString() {
        return getText();
    }

    public String toStringList() {
        return getText();
    }

    public String toStringTree() {
        return getText();
    }
}