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<?xml version="1.0" encoding="latin1" ?>
<!DOCTYPE chapter SYSTEM "chapter.dtd">
<chapter>
<header>
<copyright>
<year>1997</year><year>2010</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
The contents of this file are subject to the Erlang Public License,
Version 1.1, (the "License"); you may not use this file except in
compliance with the License. You should have received a copy of the
Erlang Public License along with this software. If not, it can be
retrieved online at http://www.erlang.org/.
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
the License for the specific language governing rights and limitations
under the License.
</legalnotice>
<title>Parsetools Release Notes</title>
<prepared>otp_appnotes</prepared>
<docno>nil</docno>
<date>nil</date>
<rev>nil</rev>
<file>notes.xml</file>
</header>
<p>This document describes the changes made to the Parsetools application.</p>
<section><title>Parsetools 2.0.5</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p> The formating of Yecc's error messages has been
improved. (Thanks to Joe Armstrong.) </p>
<p>
Own Id: OTP-8919</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 2.0.4</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
<p>Running HiPE-compiled Yecc parsers no longer results
in a <c>function_clause</c> error.</p>
<p>
Own Id: OTP-8771</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 2.0.3</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
<p>Yecc failed to report reduce/reduce conflicts where
one of the reductions involved the root symbol. This bug
has been fixed. (Thanks to Manolis Papadakis.)</p>
<p>
Own Id: OTP-8483</p>
</item>
<item>
<p>A bug introduced in Parsetools 1.4.4 (R12B-2) has been
fixed. (Thanks to Manolis Papadakis.)</p>
<p>
Own Id: OTP-8486</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 2.0.2</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>
Cleanups suggested by tidier and modernization of types
and specs.</p>
<p>
Own Id: OTP-8455</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 2.0.1</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>Leex no longer uses the deprecated <c>regexp</c>
module. (Thanks to Robert Virding.).</p>
<p>
Own Id: OTP-8231</p>
</item>
</list>
</section>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
<p>A minor bug in <c>leex(3)</c> has been fixed.</p>
<p>
Own Id: OTP-8197</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 2.0</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>Leex, a lexical analyzer generator for Erlang,
has been added to Parsetools. This initial version
should be considered experimental; it is known
that there will be changes and additions.
(Thanks to Robert Virding.).</p>
<p>
Own Id: OTP-8013</p>
</item>
</list>
</section>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
<p>The parsers generated by Yecc now report correct
error lines when possible.</p>
<p>
Own Id: OTP-7969</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.7</title>
<section><title>Fixed Bugs and Malfunctions</title>
<list>
<item>
<p>A bug in yeccpre.hrl introduced in R13A has been
fixed.</p>
<p>
Own Id: OTP-7945</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.6</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>Updated file headers.</p>
<p>
Own Id: OTP-7798</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.5</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>The <c>yecc</c> grammar has been augmented with an
optional header section. (Thanks to Richard
Carlsson.)</p>
<p>
Own Id: OTP-7292</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.4</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>The size of the code generated by Yecc has
been reduced. The code is also faster.</p>
<p>Macros can now be used in actions.</p>
<p>
Own Id: OTP-7224</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.3</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p><c>tuple_size/1</c> and <c>byte_size/1</c> have been
substituted for <c>size/1</c>.</p>
<p>
Own Id: OTP-7009</p>
</item>
</list>
</section>
</section>
<section><title>Parsetools 1.4.2</title>
<section><title>Improvements and New Features</title>
<list>
<item>
<p>The size of the code generated by yecc has been
reduced. </p>
<p>A note regarding the <c>includefile</c> option:
although yecc can cope with includefiles based on some
earlier <c>yeccpre.hrl</c> it is recommended for
efficiency reasons to update includefiles as to follow
the pattern in the latest <c>yeccpre.hrl</c>.</p>
<p>
Own Id: OTP-6851</p>
</item>
</list>
</section>
</section>
<section>
<title>Parsetools 1.4.1.1</title>
<section>
<title>Improvements and New Features</title>
<list type="bulleted">
<item>
<p>Minor Makefile changes.</p>
<p>Own Id: OTP-6689</p>
</item>
</list>
</section>
</section>
<section>
<title>Parsetools 1.4.1</title>
<section>
<title>Fixed Bugs and Malfunctions</title>
<list type="bulleted">
<item>
<p>A bug concerning precedence declarations of
non-terminals "one level up" has been fixed in yecc.</p>
<p>Own Id: OTP-6362</p>
</item>
</list>
</section>
</section>
<section>
<title>Parsetools 1.4</title>
<section>
<title>Improvements and Fixed Bugs</title>
<p>Several modifications of Yecc have been made:</p>
<list type="bulleted">
<item>
<p>The new functions <c>file/1,2</c> take the
role of the old functions <c>yecc/2,3,4</c>. The
latter functions are no longer documented but are
kept for backward compatibility.</p>
</item>
<item>
<p>More checks of the grammar file have been
implemented. Examples are warnings for unused
non-terminals and duplicated declarations.</p>
</item>
<item>
<p>Invalid pseudo variables are no longer
replaced by <c>'$undefined'</c> but cause a failure.</p>
</item>
<item>
<p>Reserved words no longer need to be quoted
when used as terminals or non-terminals.</p>
</item>
<item>
<p>When compiling the generated parser file errors
and warnings concerning user code refer to
the grammar file, not the parser file.</p>
</item>
<item>
<p>Yecc emits a warning if there are conflicts
in the grammar. The new declaration <c>Expect</c> can
be used to suppress this warning.</p>
</item>
<item>
<p>The new operator precedence declaration
<c>Nonassoc</c> can be used to declare operators with
no associativity.</p>
</item>
<item>
<p>Precedence can be given to more than one operator
with one single operator precedence declaration.</p>
</item>
<item>
<p>The function <c>parse_and_scan/1</c> in the
default includefile accepts <c>{Function, A}</c>
as well as {{M,F}, A} as tokenizer function.
Exceptions in the tokenizer are never caught.</p>
</item>
<item>
<p>The functions <c>yecc:file/1,2</c> can be accessed
from the Erlang shell via the new functions <c>c:y/1,2</c>
in STDLIB.</p>
</item>
</list>
<p>See yecc(3) for further details.</p>
<p>Own Id: OTP-5366</p>
</section>
</section>
<section>
<title>Parsetools 1.3.2</title>
<section>
<title>Fixed Bugs and Malfunctions</title>
<list type="bulleted">
<item>
<p>A bug in <c>Yecc</c> that was introduced in R9B has been
removed. Another bug concerning precedence declaration
"one level up" has been fixed.</p>
<p>Own Id: OTP-5461</p>
</item>
</list>
</section>
</section>
<section>
<title>Parsetools 1.3.1</title>
<section>
<title>Fixed Bugs and Malfunctions</title>
<list type="bulleted">
<item>
<p>A bug in the file <c>parsetools/include/yeccpre.hrl</c>
caused <c>yecc:parse_and_scan/1</c> to always report a
parse failure when the lexer reported end-of-file. This
problem has been fixed.</p>
<p>Own Id: OTP-5369</p>
</item>
</list>
</section>
</section>
</chapter>
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