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test/tools/javac/lambdaShapes/org/openjdk/tests/shapegen/TTParser.java@b12ffdfa1341 (annotated)

test/tools/javac/lambdaShapes/org/openjdk/tests/shapegen/TTParser.java

Mon, 21 Jan 2013 20:15:16 +0000

author

mcimadamore

date

Mon, 21 Jan 2013 20:15:16 +0000

changeset 1512

b12ffdfa1341

parent 0

959103a6100f

permissions

-rw-r--r--

8005851: Remove support for synchronized interface methods
Summary: Synchronized default methods are no longer supported
Reviewed-by: jjg

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package org.openjdk.tests.shapegen;
aoqi@0	27
aoqi@0	28	import java.util.ArrayList;
aoqi@0	29	import java.util.HashMap;
aoqi@0	30	import java.util.List;
aoqi@0	31	import java.util.Map;
aoqi@0	32	import java.io.IOException;
aoqi@0	33	import java.io.StringReader;
aoqi@0	34
aoqi@0	35	import static java.lang.Character.isLetter;
aoqi@0	36	import static java.lang.Character.isUpperCase;
aoqi@0	37	import static java.lang.Character.isWhitespace;
aoqi@0	38
aoqi@0	39	/**
aoqi@0	40	* Parse a type template definition string
aoqi@0	41	*
aoqi@0	42	* input :: classDef
aoqi@0	43	* classDef :: letter [ ( classDef* ) ]
aoqi@0	44	*
aoqi@0	45	* @author Robert Field
aoqi@0	46	*/
aoqi@0	47	public class TTParser extends StringReader {
aoqi@0	48
aoqi@0	49	private Map<Character, TTNode> letterMap = new HashMap<>();
aoqi@0	50	private char ch;
aoqi@0	51
aoqi@0	52	private final String def;
aoqi@0	53
aoqi@0	54	public TTParser(String s) {
aoqi@0	55	super(s);
aoqi@0	56	this.def = s;
aoqi@0	57	}
aoqi@0	58
aoqi@0	59	private void advance() throws IOException {
aoqi@0	60	do {
aoqi@0	61	ch = (char)read();
aoqi@0	62	} while (isWhitespace(ch));
aoqi@0	63	}
aoqi@0	64
aoqi@0	65	public TTNode parse() {
aoqi@0	66	try {
aoqi@0	67	advance();
aoqi@0	68	return classDef();
aoqi@0	69	} catch (IOException t) {
aoqi@0	70	throw new RuntimeException(t);
aoqi@0	71	}
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	private TTNode classDef() throws IOException {
aoqi@0	75	if (!isLetter(ch)) {
aoqi@0	76	if (ch == (char)-1) {
aoqi@0	77	throw new IOException("Unexpected end of type template in " + def);
aoqi@0	78	} else {
aoqi@0	79	throw new IOException("Unexpected character in type template: " + (Character)ch + " in " + def);
aoqi@0	80	}
aoqi@0	81	}
aoqi@0	82	char nodeCh = ch;
aoqi@0	83	TTNode node = letterMap.get(nodeCh);
aoqi@0	84	boolean canBeClass = isUpperCase(nodeCh);
aoqi@0	85	advance();
aoqi@0	86	if (node == null) {
aoqi@0	87	List<TTNode> subtypes = new ArrayList<>();
aoqi@0	88	if (ch == '(') {
aoqi@0	89	advance();
aoqi@0	90	while (ch != ')') {
aoqi@0	91	subtypes.add(classDef());
aoqi@0	92	}
aoqi@0	93	advance();
aoqi@0	94	}
aoqi@0	95	node = new TTNode(subtypes, canBeClass);
aoqi@0	96	letterMap.put(nodeCh, node);
aoqi@0	97	}
aoqi@0	98	return node;
aoqi@0	99	}
aoqi@0	100	}