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b41146cd1e
Co-authored-by: Christian Hagedorn <chagedorn@openjdk.org> Reviewed-by: rcastanedalo, mhaessig, chagedorn
72 lines
2.9 KiB
Java
72 lines
2.9 KiB
Java
/*
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* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.lib.template_framework;
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import java.util.Arrays;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Helper class for {@link Token}, to keep the parsing methods package private.
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*
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* <p>
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* The {@link Template#scope} and {@link Hook#anchor} are given a list of tokens, which are either
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* {@link Token}s or {@link String}s or some permitted boxed primitives. These are then parsed
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* and all non-{@link Token}s are converted to {@link StringToken}s. The parsing also flattens
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* {@link List}s.
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*/
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final class TokenParser {
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static List<Token> parse(Object[] objects) {
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if (objects == null) {
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throw new IllegalArgumentException("Unexpected tokens: null");
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}
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List<Token> outputList = new ArrayList<>();
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parseToken(Arrays.asList(objects), outputList);
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return outputList;
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}
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private static void parseList(List<?> inputList, List<Token> outputList) {
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for (Object o : inputList) {
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parseToken(o, outputList);
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}
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}
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private static void parseToken(Object o, List<Token> outputList) {
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if (o == null) {
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throw new IllegalArgumentException("Unexpected token: null");
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}
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switch (o) {
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case Token t -> outputList.add(t);
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case String s -> outputList.add(new StringToken(Renderer.format(s)));
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case Integer s -> outputList.add(new StringToken(Renderer.format(s)));
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case Long s -> outputList.add(new StringToken(Renderer.format(s)));
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case Double s -> outputList.add(new StringToken(Renderer.format(s)));
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case Float s -> outputList.add(new StringToken(Renderer.format(s)));
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case Boolean s -> outputList.add(new StringToken(Renderer.format(s)));
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case List<?> l -> parseList(l, outputList);
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default -> throw new IllegalArgumentException("Unexpected token: " + o);
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}
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}
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}
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