repeatnode.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 103 行

/*
 * @(#)RepeatNode.java	1.12 06/10/25
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program 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. 
 * 
 * This program 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 at /legal/license.txt). 
 * 
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 */

package com.sun.tools.jdwpgen;

import java.util.*;
import java.io.*;

class RepeatNode extends AbstractTypeNode {

    Node member;

    void constrain(Context ctx) {
        super.constrain(ctx);
        if (components.size() != 1) {
            error("Repeat must have exactly one member, use Group for more");
        }
        member = (Node)(components.get(0));
        if (!(member instanceof TypeNode)) {
            error("Repeat member must be type specifier");
        }
    }
    
    void document(PrintWriter writer) {
        docRowStart(writer);
        writer.println("<td colspan=" + 
                       (maxStructIndent - structIndent) + ">");
        writer.println("int<td><i>" + name + "</i><td>" + 
                       comment() + "&nbsp;");
        docRowStart(writer);
        writer.println("<td colspan=" + 
                       (maxStructIndent - structIndent + 2) + ">");
        writer.println("Repeated <i>" + name + "</i> times:");
        ++structIndent;
        member.document(writer);
        --structIndent;
    }
    
    String docType() {
        return "-BOGUS-"; // should never call this
    }

    String javaType() {
        return member.javaType() + "[]";
    }

    public void genJavaWrite(PrintWriter writer, int depth, 
                             String writeLabel) {
        genJavaDebugWrite(writer, depth, writeLabel, "\"\"");
        indent(writer, depth);
        writer.println("ps.writeInt(" + writeLabel + ".length);");
        indent(writer, depth);
        writer.println("for (int i = 0; i < " + writeLabel + ".length; i++) {;");
        ((TypeNode)member).genJavaWrite(writer, depth+1, writeLabel + "[i]");
        indent(writer, depth);
        writer.println("}");
    }

    String javaRead() {
        error("Internal - Should not call RepeatNode.javaRead()");
        return "";
    }
    
    public void genJavaRead(PrintWriter writer, int depth, 
                            String readLabel) {
        genJavaDebugRead(writer, depth, readLabel, "\"\"");
        String cntLbl = readLabel + "Count";
        indent(writer, depth);
        writer.println("int " + cntLbl + " = ps.readInt();");
        indent(writer, depth);
        writer.println(readLabel + " = new " + member.javaType() + 
                       "[" + cntLbl + "];");
        indent(writer, depth);
        writer.println("for (int i = 0; i < " + cntLbl + "; i++) {;");
        member.genJavaRead(writer, depth+1, readLabel + "[i]");
        indent(writer, depth);
        writer.println("}");
    }
}