Parsetools Release Notes

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This document describes the changes made to the Parsetools application.

Parsetools 2.6

Improvements and New Features

  • The leex documentation has been updated to use specs for documenting the generated interface.

    Own Id: OTP-18796 Aux Id: PR-7703

  • yecc now wraps the -module attribute with -file to indicate the .yrl source file.

    Own Id: OTP-18912 Aux Id: PR-7963

  • The documentation has been migrated to use Markdown and ExDoc.

    Own Id: OTP-18955 Aux Id: PR-8026

Parsetools 2.5

Improvements and New Features

  • Leex has been extended with optional column number support.

    Own Id: OTP-18491 Aux Id: PR-6882

Parsetools 2.4.1

Improvements and New Features

  • There is a new configure option, --enable-deterministic-build, which will apply the deterministic compiler option when building Erlang/OTP. The deterministic option has been improved to eliminate more sources of non-determinism in several applications.

    Own Id: OTP-18165 Aux Id: PR-5965

Parsetools 2.4

Improvements and New Features

  • In the generated code, yecc will now quote all atoms coming from terminals in the grammar, in order to avoid conflicts with future reserved words.

    Own Id: OTP-17755

Parsetools 2.3.2

Fixed Bugs and Malfunctions

  • The default parser include file for yecc (yeccpre) will no longer crash when attempting to print tokens when reporting an error.

    Own Id: OTP-17721

Parsetools 2.3.1

Fixed Bugs and Malfunctions

  • Fix a bug in Leex which caused the Erlang Compiler to generate warnings.

    Own Id: OTP-17499 Aux Id: GH-4918

  • Fix a bug in Yecc which caused the Erlang Compiler to generate warnings.

    Own Id: OTP-17535 Aux Id: GH-5067

Parsetools 2.3

Improvements and New Features

  • Add types and specifications for documentation.

    Own Id: OTP-16957

  • Let Leex and Yecc recognize the environment variable ERL_COMPILER_OPTIONS. Add Yecc option {error_location, column | line}.

    Own Id: OTP-17023

Parsetools 2.2

Improvements and New Features

  • Remove usage and documentation of old requests of the I/O-protocol.

    Own Id: OTP-15695

Parsetools 2.1.8

Fixed Bugs and Malfunctions

  • Improved documentation.

    Own Id: OTP-15190

Parsetools 2.1.7

Improvements and New Features

  • Calls to erlang:get_stacktrace() are removed.

    Own Id: OTP-14861

Parsetools 2.1.6

Fixed Bugs and Malfunctions

  • Warnings about unused functions in leexinc.hrl are suppressed.

    Own Id: OTP-14697

Parsetools 2.1.5

Fixed Bugs and Malfunctions

  • Minor documentation fixes

    Own Id: OTP-14276 Aux Id: PR-1357

Improvements and New Features

  • Miscellaneous updates due to atoms containing arbitrary Unicode characters.

    Own Id: OTP-14285

Parsetools 2.1.4

Fixed Bugs and Malfunctions

  • Correct counting of newlines when rules with newlines are used in Leex.

    Own Id: OTP-13916 Aux Id: ERL-263

  • Correct handling of Unicode in Leex.

    Own Id: OTP-13919

Parsetools 2.1.3

Fixed Bugs and Malfunctions

  • Yecc generates Dialyzer suppressions to avoid warnings when operator precedence declarations are used.

    Own Id: OTP-13681

Parsetools 2.1.2

Improvements and New Features

  • Internal changes

    Own Id: OTP-13551

Parsetools 2.1.1

Fixed Bugs and Malfunctions

  • Correct the documentation of the error tuple returned by Yecc and Leex.

    Own Id: OTP-13031

Parsetools 2.1

Improvements and New Features

  • The new -dialyzer() attribute is used for suppressing Dialyzer warnings in generated code.

    Own Id: OTP-12271

Parsetools 2.0.12

Fixed Bugs and Malfunctions

  • The line counter becomes invalid when rules with linewrap are used. This issue appears because the parsing FSM does not roll back the line counter after attempting such a rule.

    Own Id: OTP-12238

Parsetools 2.0.11

Fixed Bugs and Malfunctions

  • Application upgrade (appup) files are corrected for the following applications:

    asn1, common_test, compiler, crypto, debugger, dialyzer, edoc, eldap, erl_docgen, et, eunit, gs, hipe, inets, observer, odbc, os_mon, otp_mibs, parsetools, percept, public_key, reltool, runtime_tools, ssh, syntax_tools, test_server, tools, typer, webtool, wx, xmerl

    A new test utility for testing appup files is added to test_server. This is now used by most applications in OTP.

    (Thanks to Tobias Schlager)

    Own Id: OTP-11744

  • A Yecc example has been updated in the documentation (Thanks to Pierre Fenoll.)

    Own Id: OTP-11749

Parsetools 2.0.10

Fixed Bugs and Malfunctions

  • A bug causing Yecc to generate badly formed parsers when encountering very simple recursive rules has been fixed. (Thanks to Eric Pailleau.)

    Own Id: OTP-11269

  • A bug where Unicode filenames combined with Latin-1 encoding could crash Yecc and Leex has been fixed.

    Own Id: OTP-11286

Improvements and New Features

  • Fix leex module`s inability to build unicode-aware lexers. Thanks to Pierre Fenoll.

    Own Id: OTP-11313

Parsetools 2.0.9

Improvements and New Features

  • Miscellaneous updates due to Unicode support.

    Own Id: OTP-10820

Parsetools 2.0.8

Improvements and New Features

  • Support for Unicode has been implemented.

    Own Id: OTP-10302

  • The file esyntax.yrl has been removed.

    Own Id: OTP-10660

Parsetools 2.0.7

Improvements and New Features

  • Tuple funs (a two-element tuple with a module name and a function) are now officially deprecated and will be removed in R16. Use 'fun M:F/A' instead. To make you aware that your system uses tuple funs, the very first time a tuple fun is applied, a warning will be sent to the error logger.

    Own Id: OTP-9649

Parsetools 2.0.6

Fixed Bugs and Malfunctions

  • Dialyzer warnings have been removed.

    Own Id: OTP-8318

  • yecc: add warnings_as_errors option(Thanks to Tuncer ayaz)

    Own Id: OTP-9376

  • Fix incorrect order of pseudo variables in yecc example

    The example is for converting from infix to prefix. This change uses to correct ordering of the triplet. (Thanks to Garret Smith)

    Own Id: OTP-9484

  • Implement or fix -Werror option

    If -Werror is enabled and there are warnings no output file is written. Also make sure that error/warning reporting is consistent. (Thanks to Tuncer Ayaz)

    Own Id: OTP-9536

  • XML files have been corrected.

    Own Id: OTP-9550 Aux Id: OTP-9541

Parsetools 2.0.5

Improvements and New Features

  • The formatting of Yecc's error messages has been improved. (Thanks to Joe Armstrong.)

    Own Id: OTP-8919

Parsetools 2.0.4

Fixed Bugs and Malfunctions

  • Running HiPE-compiled Yecc parsers no longer results in a function_clause error.

    Own Id: OTP-8771

Parsetools 2.0.3

Fixed Bugs and Malfunctions

  • 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.)

    Own Id: OTP-8483

  • A bug introduced in Parsetools 1.4.4 (R12B-2) has been fixed. (Thanks to Manolis Papadakis.)

    Own Id: OTP-8486

Parsetools 2.0.2

Improvements and New Features

  • Cleanups suggested by tidier and modernization of types and specs.

    Own Id: OTP-8455

Parsetools 2.0.1

Improvements and New Features

  • Leex no longer uses the deprecated regexp module. (Thanks to Robert Virding.).

    Own Id: OTP-8231

Fixed Bugs and Malfunctions

  • A minor bug in leex has been fixed.

    Own Id: OTP-8197

Parsetools 2.0

Improvements and New Features

  • 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.).

    Own Id: OTP-8013

Fixed Bugs and Malfunctions

  • The parsers generated by Yecc now report correct error lines when possible.

    Own Id: OTP-7969

Parsetools 1.4.7

Fixed Bugs and Malfunctions

  • A bug in yeccpre.hrl introduced in R13A has been fixed.

    Own Id: OTP-7945

Parsetools 1.4.6

Improvements and New Features

  • Updated file headers.

    Own Id: OTP-7798

Parsetools 1.4.5

Improvements and New Features

  • The yecc grammar has been augmented with an optional header section. (Thanks to Richard Carlsson.)

    Own Id: OTP-7292

Parsetools 1.4.4

Improvements and New Features

  • The size of the code generated by Yecc has been reduced. The code is also faster.

    Macros can now be used in actions.

    Own Id: OTP-7224

Parsetools 1.4.3

Improvements and New Features

Parsetools 1.4.2

Improvements and New Features

  • The size of the code generated by yecc has been reduced.

    A note regarding the includefile option: although yecc can cope with includefiles based on some earlier yeccpre.hrl it is recommended for efficiency reasons to update includefiles as to follow the pattern in the latest yeccpre.hrl.

    Own Id: OTP-6851

Parsetools 1.4.1.1

Improvements and New Features

  • Minor Makefile changes.

    Own Id: OTP-6689

Parsetools 1.4.1

Fixed Bugs and Malfunctions

  • A bug concerning precedence declarations of non-terminals "one level up" has been fixed in yecc.

    Own Id: OTP-6362

Parsetools 1.4

Improvements and Fixed Bugs

Several modifications of Yecc have been made:

  • The new functions file/1,2 take the role of the old functions yecc/2,3,4. The latter functions are no longer documented but are kept for backward compatibility.
  • More checks of the grammar file have been implemented. Examples are warnings for unused non-terminals and duplicated declarations.
  • Invalid pseudo variables are no longer replaced by '$undefined' but cause a failure.
  • Reserved words no longer need to be quoted when used as terminals or non-terminals.
  • When compiling the generated parser file errors and warnings concerning user code refer to the grammar file, not the parser file.
  • Yecc emits a warning if there are conflicts in the grammar. The new declaration Expect can be used to suppress this warning.
  • The new operator precedence declaration Nonassoc can be used to declare operators with no associativity.
  • Precedence can be given to more than one operator with one single operator precedence declaration.
  • The function parse_and_scan/1 in the default includefile accepts {Function, A} as well as {{M,F}, A} as tokenizer function. Exceptions in the tokenizer are never caught.
  • The functions yecc:file/1,2 can be accessed from the Erlang shell via the new functions c:y/1,2 in STDLIB.

See yecc(3) for further details.

Own Id: OTP-5366

Parsetools 1.3.2

Fixed Bugs and Malfunctions

  • A bug in Yecc that was introduced in R9B has been removed. Another bug concerning precedence declaration "one level up" has been fixed.

    Own Id: OTP-5461

Parsetools 1.3.1

Fixed Bugs and Malfunctions

  • A bug in the file parsetools/include/yeccpre.hrl caused yecc:parse_and_scan/1 to always report a parse failure when the lexer reported end-of-file. This problem has been fixed.

    Own Id: OTP-5369