AltNode.java revision 8845:4be14673b9bf 
1/*
2 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package build.tools.jdwpgen;
27
28import java.util.*;
29import java.io.*;
30
31class AltNode extends AbstractGroupNode implements TypeNode {
32
33    SelectNode select = null;
34
35    void constrain(Context ctx) {
36        super.constrain(ctx);
37
38        if (!(nameNode instanceof NameValueNode)) {
39            error("Alt name must have value: " + nameNode);
40        }
41        if (parent instanceof SelectNode) {
42            select = (SelectNode)parent;
43        } else {
44            error("Alt must be in Select");
45        }
46    }
47
48    void document(PrintWriter writer) {
49        docRowStart(writer);
50        writer.println("<td colspan=" +
51                       (maxStructIndent - structIndent + 1) + ">");
52        writer.println("Case " + nameNode.name + " - if <i>" +
53                       ((SelectNode)parent).typeNode.name +
54                       "</i> is " + nameNode.value() + ":");
55        writer.println("<td>" + comment() + "&nbsp;");
56        ++structIndent;
57        super.document(writer);
58        --structIndent;
59    }
60
61    String javaClassImplements() {
62        return " extends " + select.commonBaseClass();
63    }
64
65    void genJavaClassSpecifics(PrintWriter writer, int depth) {
66        indent(writer, depth);
67        writer.print("static final " + select.typeNode.javaType());
68        writer.println(" ALT_ID = " + nameNode.value() + ";");
69        if (context.isWritingCommand()) {
70            genJavaCreateMethod(writer, depth);
71        } else {
72            indent(writer, depth);
73            writer.println(select.typeNode.javaParam() + "() {");
74            indent(writer, depth+1);
75            writer.println("return ALT_ID;");
76            indent(writer, depth);
77            writer.println("}");
78        }
79        super.genJavaClassSpecifics(writer, depth);
80    }
81
82    void genJavaWriteMethod(PrintWriter writer, int depth) {
83        genJavaWriteMethod(writer, depth, "");
84    }
85
86    void genJavaReadsSelectCase(PrintWriter writer, int depth, String common) {
87        indent(writer, depth);
88        writer.println("case " + nameNode.value() + ":");
89        indent(writer, depth+1);
90        writer.println(common + " = new " + name + "(vm, ps);");
91        indent(writer, depth+1);
92        writer.println("break;");
93    }
94
95    void genJavaCreateMethod(PrintWriter writer, int depth) {
96        indent(writer, depth);
97        writer.print("static " + select.name() + " create(");
98        writer.print(javaParams());
99        writer.println(") {");
100        indent(writer, depth+1);
101        writer.print("return new " + select.name() + "(");
102        writer.print("ALT_ID, new " + javaClassName() + "(");
103        for (Iterator<Node> it = components.iterator(); it.hasNext();) {
104            TypeNode tn = (TypeNode)it.next();
105            writer.print(tn.name());
106            if (it.hasNext()) {
107                writer.print(", ");
108            }
109        }
110        writer.println("));");
111        indent(writer, depth);
112        writer.println("}");
113    }
114
115}
116