ModuleTreeImpl.java revision 1739:4a6a1fd3d3dd 
1/*
2 * Copyright (c) 2016, 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
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24 */
25package jdk.nashorn.api.tree;
26
27import java.util.List;
28import java.util.stream.Collectors;
29import jdk.nashorn.internal.ir.FunctionNode;
30import jdk.nashorn.internal.ir.IdentNode;
31import jdk.nashorn.internal.ir.Module;
32import static jdk.nashorn.api.tree.ExportEntryTreeImpl.createExportList;
33import static jdk.nashorn.api.tree.ImportEntryTreeImpl.createImportList;
34
35final class ModuleTreeImpl extends TreeImpl implements ModuleTree {
36
37    private final Module mod;
38    private final List<? extends ImportEntryTree> imports;
39    private final List<? extends ExportEntryTree> localExports;
40    private final List<? extends ExportEntryTree> indirectExports;
41    private final List<? extends ExportEntryTree> starExports;
42
43    private ModuleTreeImpl(final FunctionNode func,
44            final List<? extends ImportEntryTree> imports,
45            final List<? extends ExportEntryTree> localExports,
46            final List<? extends ExportEntryTree> indirectExports,
47            final List<? extends ExportEntryTree> starExports) {
48        super(func);
49        assert func.getKind() == FunctionNode.Kind.MODULE : "module function node expected";
50        this.mod = func.getModule();
51        this.imports = imports;
52        this.localExports = localExports;
53        this.indirectExports = indirectExports;
54        this.starExports = starExports;
55    }
56
57    static ModuleTreeImpl create(final FunctionNode func) {
58        final Module mod = func.getModule();
59        return new ModuleTreeImpl(func,
60            createImportList(mod.getImportEntries()),
61            createExportList(mod.getLocalExportEntries()),
62            createExportList(mod.getIndirectExportEntries()),
63            createExportList(mod.getStarExportEntries()));
64    }
65
66    @Override
67    public Kind getKind() {
68        return Tree.Kind.MODULE;
69    }
70
71    @Override
72    public List<? extends ImportEntryTree> getImportEntries() {
73        return imports;
74    }
75
76    @Override
77    public List<? extends ExportEntryTree> getLocalExportEntries() {
78        return localExports;
79    }
80
81    @Override
82    public List<? extends ExportEntryTree> getIndirectExportEntries() {
83        return indirectExports;
84    }
85
86    @Override
87    public List<? extends ExportEntryTree> getStarExportEntries() {
88        return starExports;
89    }
90
91    @Override
92    public <R,D> R accept(final TreeVisitor<R,D> visitor, final D data) {
93        return visitor.visitModule(this, data);
94    }
95
96    static IdentifierTree identOrNull(final IdentNode node) {
97        return node != null? new IdentifierTreeImpl(node) : null;
98    }
99}
100