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src/share/classes/com/sun/tools/corba/se/idl/som/idlemit/MetaPragma.java@6845b95cba6b (annotated)

src/share/classes/com/sun/tools/corba/se/idl/som/idlemit/MetaPragma.java

Thu, 31 Aug 2017 18:10:36 +0800

author

aoqi

date

Thu, 31 Aug 2017 18:10:36 +0800

changeset 748

6845b95cba6b

parent 158

91006f157c46

parent 0

7ef37b2cdcad

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1999, 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	* COMPONENT_NAME: shasta
aoqi@0	27	*
aoqi@0	28	* ORIGINS: 27
aoqi@0	29	*
aoqi@0	30	* Licensed Materials - Property of IBM
aoqi@0	31	* 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997,1998,1999
aoqi@0	32	* RMI-IIOP v1.0
aoqi@0	33	*
aoqi@0	34	*/
aoqi@0	35
aoqi@0	36	package com.sun.tools.corba.se.idl.som.idlemit;
aoqi@0	37	import java.util.Vector;
aoqi@0	38	import com.sun.tools.corba.se.idl.som.cff.Messages;
aoqi@0	39	/**
aoqi@0	40	* This is an implementation that handles
aoqi@0	41	* #pragma meta scoped_name string
aoqi@0	42	* where
aoqi@0	43	* <UL>
aoqi@0	44	* <LI> scoped_name == "::" separated scoped name
aoqi@0	45	* <LI> string == separated identifiers, such as "localonly",
aoqi@0	46	* "abstract", or "init".
aoqi@0	47	* D59407: NOTE: any non-white-space is grouped
aoqi@0	48	* as part of the identifier.
aoqi@0	49	* </UL>
aoqi@0	50	*
aoqi@0	51	* This pragma handler places a vector of Strings into the dynamicVariable()
aoqi@0	52	* part of the SymtabEntry. The key to access the dynamicVariable()
aoqi@0	53	* is com.sun.tools.corba.se.idl.som.idlemit.MetaPragma.metaKey
aoqi@0	54	*
aoqi@0	55	* It is possible to associate a meta pragma with a forward entry.
aoqi@0	56	* At some point after the parser has completed,
aoqi@0	57	* the method processForward(ForwardEntry entry) should be called
aoqi@0	58	* for each ForwardEntry so that the meta information can be folded from
aoqi@0	59	* the ForwardEntry into the corresponding InterfaceEntry.
aoqi@0	60	*/
aoqi@0	61	public class MetaPragma extends com.sun.tools.corba.se.idl.PragmaHandler {
aoqi@0	62	/* Class variables */
aoqi@0	63
aoqi@0	64	/* key to access the Cached meta info in com.sun.tools.corba.se.idl.SymtabEntry */
aoqi@0	65	public static int metaKey = com.sun.tools.corba.se.idl.SymtabEntry.getVariableKey();
aoqi@0	66
aoqi@0	67
aoqi@0	68	/**
aoqi@0	69	* Main entry point for the MetaPragma handler
aoqi@0	70	* @param pragma string for pragma name
aoqi@0	71	* @param currentToken next token in the input stream.
aoqi@0	72	* @return true if this is a meta pragma.
aoqi@0	73	*/
aoqi@0	74	public boolean process(String pragma, String currentToken) {
aoqi@0	75	if ( !pragma.equals("meta"))
aoqi@0	76	return false;
aoqi@0	77
aoqi@0	78	com.sun.tools.corba.se.idl.SymtabEntry entry ;
aoqi@0	79	String msg;
aoqi@0	80	try {
aoqi@0	81	entry = scopedName();
aoqi@0	82	if ( entry == null){
aoqi@0	83	/* scoped name not found */
aoqi@0	84	parseException(Messages.msg("idlemit.MetaPragma.scopedNameNotFound"));
aoqi@0	85	skipToEOL();
aoqi@0	86	}
aoqi@0	87	else {
aoqi@0	88	msg = (currentToken()+ getStringToEOL());
aoqi@0	89	// System.out.println(entry + ": " + msg);
aoqi@0	90	Vector v;
aoqi@0	91	v = (Vector) entry.dynamicVariable(metaKey);
aoqi@0	92	if ( v== null){
aoqi@0	93	v = new Vector();
aoqi@0	94	entry.dynamicVariable(metaKey, v);
aoqi@0	95	}
aoqi@0	96	parseMsg(v, msg);
aoqi@0	97	}
aoqi@0	98	} catch(Exception e){
aoqi@0	99	// System.out.println("exception in MetaPragma");
aoqi@0	100	}
aoqi@0	101	return true;
aoqi@0	102	}
aoqi@0	103
aoqi@0	104
aoqi@0	105	/**
aoqi@0	106	* Fold the meta info from the forward entry into its corresponding
aoqi@0	107	* interface entry.
aoqi@0	108	* @param forwardEntry the forward entry to process
aoqi@0	109	*/
aoqi@0	110	static public void processForward(com.sun.tools.corba.se.idl.ForwardEntry forwardEntry){
aoqi@0	111
aoqi@0	112	Vector forwardMeta;
aoqi@0	113	try {
aoqi@0	114	forwardMeta = (Vector)forwardEntry.dynamicVariable(metaKey);
aoqi@0	115	} catch (Exception e){
aoqi@0	116	forwardMeta = null;
aoqi@0	117	}
aoqi@0	118	com.sun.tools.corba.se.idl.SymtabEntry forwardInterface = forwardEntry.type();
aoqi@0	119	if (forwardMeta != null && forwardInterface!= null) {
aoqi@0	120	Vector interfaceMeta;
aoqi@0	121	try {
aoqi@0	122	interfaceMeta= (Vector)forwardInterface.dynamicVariable(metaKey);
aoqi@0	123	} catch ( Exception e){
aoqi@0	124	interfaceMeta = null;
aoqi@0	125	}
aoqi@0	126
aoqi@0	127	if ( interfaceMeta == null) {
aoqi@0	128	/* set */
aoqi@0	129	try {
aoqi@0	130	forwardInterface.dynamicVariable(MetaPragma.metaKey, forwardMeta);
aoqi@0	131	} catch(Exception e){};
aoqi@0	132	}
aoqi@0	133	else if (interfaceMeta != forwardMeta) {
aoqi@0	134	/* The above check is needed because sometimes
aoqi@0	135	a forward entry is processed more the once.
aoqi@0	136	Not sure why */
aoqi@0	137	/* merge */
aoqi@0	138	for (int i=0; i < forwardMeta.size(); i++){
aoqi@0	139	try {
aoqi@0	140	Object obj = forwardMeta.elementAt(i);
aoqi@0	141	interfaceMeta.addElement(obj);
aoqi@0	142	} catch (Exception e){};
aoqi@0	143	}
aoqi@0	144	}
aoqi@0	145	}
aoqi@0	146	}
aoqi@0	147
aoqi@0	148	/**
aoqi@0	149	* parse pragma message and place into vector v.
aoqi@0	150	* @param v: vector to add message
aoqi@0	151	* @param msg: string of comma separated message, perhaps with comment.
aoqi@0	152	* This is implemented as a state machine as follows:
aoqi@0	153	*
aoqi@0	154	* State token next action
aoqi@0	155	* -----------------------------------------------------
aoqi@0	156	* initial whitespace initial
aoqi@0	157	* initial SlashStar comment
aoqi@0	158	* initial SlashSlash final
aoqi@0	159	* initial no more final
aoqi@0	160	* initial text text add to text buffer
aoqi@0	161	* initial StarSlash initial
aoqi@0	162	* comment StarSlash initial
aoqi@0	163	* comment SlashStar comment
aoqi@0	164	* comment whitespace comment
aoqi@0	165	* comment SlashSlash comment
aoqi@0	166	* comment text comment
aoqi@0	167	* comment no more final
aoqi@0	168	* text text text add to buffer
aoqi@0	169	* text SlashStar comment put in vector
aoqi@0	170	* text whitespace initial put in vector
aoqi@0	171	* text SlashSlash final put in vector
aoqi@0	172	* text StarSlash initial put in vector
aoqi@0	173	* text no more final put in vector
aoqi@0	174	*
aoqi@0	175	*/
aoqi@0	176	private static int initialState = 0;
aoqi@0	177	private static int commentState = 1;
aoqi@0	178	private static int textState = 2;
aoqi@0	179	private static int finalState =3;
aoqi@0	180
aoqi@0	181	private void parseMsg(Vector v, String msg){
aoqi@0	182	int state = initialState;
aoqi@0	183	String text = "";
aoqi@0	184	int index = 0;
aoqi@0	185	while ( state != finalState ){
aoqi@0	186	boolean isNoMore = index >= msg.length();
aoqi@0	187	char ch = ' ';
aoqi@0	188	boolean isSlashStar = false;
aoqi@0	189	boolean isSlashSlash = false;
aoqi@0	190	boolean isWhiteSpace = false;
aoqi@0	191	boolean isStarSlash = false;
aoqi@0	192	boolean isText = false;
aoqi@0	193	if (!isNoMore ){
aoqi@0	194	ch = msg.charAt(index);
aoqi@0	195	if (ch == '/' && index+1 < msg.length()){
aoqi@0	196	if (msg.charAt(index+1) == '/'){
aoqi@0	197	isSlashSlash = true;
aoqi@0	198	index++;
aoqi@0	199	}
aoqi@0	200	else if (msg.charAt(index+1) == '*'){
aoqi@0	201	isSlashStar= true;
aoqi@0	202	index++;
aoqi@0	203	} else isText = true;
aoqi@0	204	}
aoqi@0	205	else if (ch == '*' && index+1 < msg.length() ){
aoqi@0	206	if (msg.charAt(index+1) == '/'){
aoqi@0	207	isStarSlash = true;
aoqi@0	208	index++;
aoqi@0	209	} else isText = true;
aoqi@0	210	}
aoqi@0	211	else if ( Character.isSpace(ch) || (ch == ',') // 59601
aoqi@0	212	|| (ch == ';') ) // 59683
aoqi@0	213	isWhiteSpace = true;
aoqi@0	214	else isText = true;
aoqi@0	215	}
aoqi@0	216
aoqi@0	217	if (state == initialState){
aoqi@0	218	if (isSlashStar){
aoqi@0	219	state = commentState;
aoqi@0	220	}
aoqi@0	221	else if (isSlashSlash || isNoMore){
aoqi@0	222	state = finalState;
aoqi@0	223	}
aoqi@0	224	else if (isText){
aoqi@0	225	state = textState;
aoqi@0	226	text = text+ ch;
aoqi@0	227	}
aoqi@0	228	}
aoqi@0	229	else if (state == commentState){
aoqi@0	230	if (isNoMore){
aoqi@0	231	state = finalState;
aoqi@0	232	}
aoqi@0	233	else if ( isStarSlash){
aoqi@0	234	state = initialState;
aoqi@0	235	}
aoqi@0	236	}
aoqi@0	237	else if (state == textState){
aoqi@0	238	if (isNoMore || isStarSlash || isSlashSlash ||
aoqi@0	239	isSlashStar || isWhiteSpace ){
aoqi@0	240	if (!text.equals("")) {
aoqi@0	241	v.addElement(text);
aoqi@0	242	// System.err.println("adding " + text);
aoqi@0	243	text = "";
aoqi@0	244	}
aoqi@0	245	if (isNoMore)
aoqi@0	246	state = finalState;
aoqi@0	247	else if (isSlashStar)
aoqi@0	248	state = commentState;
aoqi@0	249	else state = initialState;
aoqi@0	250	}
aoqi@0	251	else if (isText){
aoqi@0	252	text = text+ch;
aoqi@0	253	}
aoqi@0	254	}
aoqi@0	255	index++;
aoqi@0	256	}
aoqi@0	257	}
aoqi@0	258
aoqi@0	259	}