Lingua Franca 0.5.0

v0.5.0 (2023-09-01)

Highlights

This release introduces new syntax for initializers, includes a renovation of the C backend to let it generate more modular code, and brings new features like a watchdog construct, support for generics in C, support for SMT-solver-based formal verification using UCLID-5, and bare-iron support for the Raspberry Pi Pico platform.

🚀 New Features

• Types allowed in reactor type args #1639 (@oowekyala)
• Equals initializer syntax #1580 (@oowekyala)
• --json and --json-file CLI args add to lfc #1686 (@patilatharva)
• Generated structs exposed in header files, reactions linkable from separate source files, and updated C target preamble visibility #1599 (@petervdonovan)
• Preprocessor definition for LF_PACKAGE_DIRECTORY #1720 (@edwardalee)
• Enclave connections and enclave coordination in the C++ target #1665 (@cmnrd)
• Mechanism for printing execution statistics #1743 (@cmnrd)
• Watchdog support for the C target #1730 (@Benichiwa)
• Automatically generated .vscode/settings.json file #1759 (@edwardalee)
• C Generics #1681 (@mkhubaibumer)
• Generic params allowed as generic arguments in C target #1804 (@petervdonovan)
• New --check flag for lff #1822 (@cmnrd)
• Environments in the C target #1772 (@erlingrj)
• lfd binary for generating diagrams from the command line #1713 (@cmnrd)
• fedsd utility updated to make the RTI optional and support enclaves visualization #1870 (@ChadliaJerad)
• C math lib always linked for C target #1894 (@cmnrd)
• Critical sections enabled outside of the context of a reactor #1901 (@edwardalee)
• Uclid5-based LF Verifier #1271 (@lsk567)
• Python launch scripts #1914 (@cmnrd)
• Raspberry Pi Pico target support #1831 (@gundralaa)
• Handling cyclic dependencies for TypeScript federated execution #1925 (@byeong-gil)

✨ Enhancements

• Keeplive natively inferred in the C++ runtime #1630 (@cmnrd)
• File access #1715 (@edwardalee)
• Validator rules to check if target supports federation or inheritance #1726 (@cmnrd)
• No more space inserted after interleaved keyword by formatter #1846 (@cmnrd)
• More natural syntax for reaction declarations #1853 (@lhstrh)
• Fix for extra whitespace around info messages #1879 (@oowekyala)
• TypeScript runtime bumped to v0.5.0 #1927 (@byeong-gil)
• Support for named and bodyless reactions in C++ #1933 (@cmnrd)
• Added layout annotation to add arbitrary layout options an elements #1951 (@soerendomroes)

🔧 Fixes

• Physical connections implemented as AST transformation #1596 (@erlingrj)
• Fix for language server "Build and Run" command #1619 (@petervdonovan)
• Fix for passing of command line options from lfc to the generator #1631 (@cmnrd)
• Fix for validation of target properties #1629 (@cmnrd)
• Fix in validation so that warnings are not reported as errors #1643 (@petervdonovan)
• Fix for NPE in lfc error reporting #1655 (@cmnrd)
• Upstream connection delays now properly handled in the TypeScript federates #1607 (@byeong-gil)
• Fix for authenticated federation #1698 (@Jakio815)
• Bugfixes in handling of files target property #1725 (@lhstrh)
• Preambles properly inherited from superclasses #1732 (@edwardalee)
• Clean Correspondence tags out of generated C code #1737 (@petervdonovan)
• Reactor classes in the same file with the same name, up to case differences, are prohibited #1741 (@petervdonovan)
• Fix for ROS serialization #1755 (@petervdonovan)
• Improved line adjustment logic for federated programs #1760 (@petervdonovan)
• Multiple fixes for federated programs with TypeScript target #1752 (@byeong-gil)
• Fix for race condition in uniqueName #1815 (@petervdonovan)
• Bugfix in integration tests and fixed ROS2 tests #1841 (@cmnrd)
• Formatter fixes #1840 (@petervdonovan)
• Adjustments for running the LF compiler in Epoch #1844 (@a-sr)
• More formatter fixes #1850 (@petervdonovan)
• More formatter fixes #1851 (@petervdonovan)
• Fix for naming collision when generic reactor is instantiated with different parameters #1864 (@petervdonovan)
• Fix for inheritance problem exposed in examples #1891 (@lhstrh)
• Fix verifier error when there is no main reactor #1916 (@lsk567)
• No more use of unordered reactions in federated programs; fix for deadlocks in some federated programs #1684 (@arengarajan99)
• Keyword extends added to tokens allowed in reaction bodies #1926 (@lhstrh)
• Fix for edge case in which comments are dropped #1924 (@petervdonovan)
• Fix for IllegalArgumentException in diagram synthesis #1932 (@petervdonovan)
• Fix for STP violation #1935 (@petervdonovan)
• Fix for after delays that use user-provided declarations #1959 (@petervdonovan)
• Bugfix for when top-level multiport width in federation depends on parameter #1956 (@petervdonovan)
• Fix compilation error in code for reset state variables with time type #1964 (@a-sr)
• Fixed path issue in generated docker-compose.yml for federations #1983 (@lhstrh)

🚧 Maintenance and Refactoring

• Migration of Epoch into separate repository #1482 (@a-sr)
• Improved CLI argument handling using picocli #1534 (@patilatharva)
• Compile definitions no longer hardcoded in generated CMakeLists.txt #1622 (@petervdonovan)
• Remove unchecked compilation warnings #1638 (@oowekyala)
• Refactoring of part of the federated package #1663 (@lhstrh)
• Removal of the use of non-API global variables in tests #1696 (@edwardalee)
• Gradle bumped to version 8 #1691 (@lhstrh)
• Removal of deprecated build-lfc script and buildLfc Gradle task #1714 (@cmnrd)
• Delete unnecessary complexity from build-lf-cli #1745 (@petervdonovan)
• C files for Python support retrieved from reactor-c repo #1757 (@lhstrh)
• Google autoformatter applied to all files #1766 (@lhstrh)
• Redesign of the repository layout and gradle configu...

Lingua Franca 0.4.0

v0.4.0 (2023-03-01)

Highlights

This release includes substantial changes under the hood and brings a lot of new features and enhancements, ranging from performance improvements to the support of new platforms like Zephyr, Arduino, and MBED in the C target. In the C++ target, it is now also straightforward to interact with ROS2 packages using the ros2-dependencies target property.

🚀 New Features

• Multiport iterator for more efficient access to sparse inputs #1298 (@edwardalee)
• Inference of logical execution times of reactions #1292 (@lhstrh)
• Custom icons for reactors in diagrams #1300 (@a-sr)
• Support for Arduino platforms #1272 (@arengarajan99)
• Automatic LF code formatter #1227 (@petervdonovan)
• Option of using OpenSSL for authentication between RTI and federates #1432 (@Jakio815)
• Safe handling of physical actions in single-threaded C runtime #1348 (@lhstrh)
• Initial support for childref multiports #1228 (@jhaye)
• Epoch built for M1 Mac #1530 (@hokeun)
• Proper handling of asynchronous interactions in Rust #1459 (@oowekyala)
• Support for basic scheduling enclaves in the C++ target #1513 (@cmnrd)
• Zephyr support for the C target #1536 (@erlingrj)
• Support for Arduino CLI #1532 (@arengarajan99)
• Arduino MBED RTOS Support #1581 (@arengarajan99)

✨ Enhancements

• Added advance-message-interval option and more federated tests for TypeScript #1293 (@hokeun)
• Improved layout for error message node #1324 (@a-sr)
• C++ target performance optimizations #1330 (@cmnrd)
• Improved error messaging for mode validation #1349 (@a-sr)
• New target property for specifying additional ROS dependencies #1355 (@cmnrd)
• Support for passthrough connections in the C++ target #1361 (@cmnrd)
• Support scheduling physical actions synchronously #1367 (@oowekyala)
• Automatic code formatting using Spotless #1374 (@petervdonovan)
• Optimized access to sparse multiports in the C++ target #1312 (@revol-xut)
• Augmented support for Arduino #1384 (@arengarajan99)
• New lff autoformatter for Lingua Franca files #1422 (@cmnrd)
• Protection from code modifying the multiport container in C++ #1420 (@revol-xut)
• Empty bracket pairs properly tokenized #1439 (@oowekyala)
• Switched to Gradle for language and diagram server build #1469 (@a-sr)
• Better multiport support for Rust #1406 (@oowekyala)
• Reduction of disk usage in the Rust target #1476 (@oowekyala)
• Native implementation of timeout in C++ #1507 (@cmnrd)
• Less verbose CMake output via suppressed install messages #1517 (@cmnrd)
• Preservation of time units when formatting LF code #1518 (@cmnrd)
• Check for update Rust runtime #1546 (@oowekyala)
• Bugfixes and improvements in token-based memory management in C #1548 (@edwardalee)
• Use of delayed and physical connections as provided by the C++ runtime #1583 (@cmnrd)

🔧 Fixes

• Removal of error reporting markers from parameter types #1310 (@Wonseo-C)
• Quick fix to adjust upstreamFedDelays as never tag #1334 (@byeong-gil)
• Fixed tracing in the C++ target #1350 (@cmnrd)
• Reactor runtime module excluded from the Rust test modules #1351 (@oowekyala)
• Problem with child dependencies in Rust fixed #1352 (@oowekyala)
• Adjustment of code generator to address #1368 #1370 (@lsk567)
• Removal of PyDev and Kotlin plugin dependencies from Epoch #1371 (@lhstrh)
• Repair of Windows diagnostic reporting #1391 (@petervdonovan)
• Fix of flaky timedwait on Windows #1402 (@lhstrh)
• Use of paths not URIs in line-directives #1412 (@erlingrj)
• NPE in Epoch fixed #1425 (@petervdonovan)
• JavaDoc and NPE on toString fixed #1445 (@edwardalee)
• Avoid reading the same input stream twice #1490 (@cmnrd)
• Tracing tools Makefile fixed #1485 (@lsk567)
• MalleableStrings made human readable #1500 (@petervdonovan)
• Fix for broken deadline propagation mechanism #1451 (@erlingrj)
• Fix of CMake policy CMP0068 warning #1523 (@cmnrd)
• rs/AsyncCallback: Join thread before creating new one #1542 (@oowekyala)
• Bugfix for port access to contained generic reactors in C++ #1547 (@cmnrd)
• Fixed validation of icon paths #1572 (@cmnrd)
• Useful error message upon encountering missing runtime sources #1573 (@cmnrd)
• [ts] Bugfix that re-enables the use of custom configuration files #1575 (@lhstrh)
• Fix to let relative include helper ignore non-C files #1578 (@lhstrh)
• Fix failing building of tracing tools #1589 (@erlingrj)
• Fixes in relative include helper for arduino-cli #1586 (@arengarajan99)
• CLI args propagated to federates #1604 (@lhstrh)
• [ts] Missing types pulled from npm #1609 (@lhstrh)

🚧 Maintenance and Refactoring

• Use HTTPS for Rust reactor runtime submodule #1308 (@jhaye)
• Switch from Rust nightly to Rust stable #1218 (@jhaye)
• Tests in TypeScript for requesting stop in federated execution #1302 (@hokeun)
• More portable way to suppress unused variable warnings #1317 (@edwardalee)
• Reduced verbosity in reported output #1323 (@petervdonovan)
• Reference reactor-ts as module #1322 (@lhstrh)
• Removal of unnecessary build dependency to address security exceptions #1365 (@cmnrd)
• Simplification of grammar that encodes mutations with the same productions as reactions #1318 (@Wonseo-C)
• Removal of "No CMake" build option #1299 (@petervdonovan)
• Usage of a published version of reactor-ts #1426 (@petervdonovan)
• Differentiation between multi-threaded and single-threaded preprocessor directives in C #1411 (@erlingrj)
• TypeScript generator cleanups #1457 (@oowekyala)
• Clean up AttributeUtils #1470 (@cmnrd)
• Infrastructure for AST transformations and factored out delay transformation #1508 (@cmnrd)
• Cleanu...

Lingua Franca 0.3.0

v0.3.0 (2022-07-22)

Highlights

This release adds broader support for methods (C and Python), syntax for annotations similar those in Java, an adaptive scheduler in the C runtime, and a new platform target property to furnish support for specialized execution platforms.

Full Changelog

🚀 New Features

• Support for C methods #1215 (@edwardalee)
• Support for Python methods #1230 (@Soroosh129)
• Adaptive scheduler for C target #1207 (@petervdonovan)
• Platform target property #1246 (@Soroosh129)
• Annotations #977 (@lsk567)

✨ Enhancements

• New handling of startup/shutdown/reset reactions in modes #1169 (@a-sr)
• Diagram layout improvements #1206 (@a-sr)
• History transitions are now indicated using the history keyword #1247 (@a-sr)
• Compile warnings are fixed and clang-tidy is ran when compiling C++ tests in CI #1259 (@cmnrd)
• New design for reset symbols in diagrams #1241 (@a-sr)
• Improvements of mode diagram layout #1282 (@a-sr)
• [cpp] Additional checks to determine whether a subdirectory should be included in compilation #1283 (@cmnrd)
• [cpp] CLI parser errors are caught and a print help message is printed #1288 (@cmnrd)
• [ts] Handling of physical action-triggered outputs in federated execution (previously handled by TAN - Time Advance Notice) #1275 (@hokeun)

🔧 Fixes

• TAN messages no longer used and in-transit messages recorded in the RTI #1074 (@Soroosh129)
• [c] A deadline of 0 is no longer interpreted as an absent deadline but one that can never be met #1217 (@billy-bao)
• Fix for deadlock in federated execution #1189 (@Soroosh129)
• [c] Removal of STP violation inheritance mechanism #1251 (@Soroosh129)
• Fix for properly handling paths with spaces in lfc launch script #1257 (@cmnrd)
• Fix that repairs the ability to execute commands with Bash in case command is not found on path #1265 (@petervdonovan)
• Fix to not include downstream reactions in highlighted cycles #1270 (@edwardalee)
• Correction of misplacement of self loops in diagrams #1274 (@a-sr)
• Fix that silences spurious error messages from Pylint #1280 (@petervdonovan)
• Patch that avoids NullPointerException in CompileActionHandler #1267 (@lhstrh)
• Do not minimize the shadow jar #1285 (@cmnrd)
• Fix for ASTUtils.width() returnning -1 even when the width can be inferred from connections #1287 (@hokeun)
• Fix banks of modal reactors #1279 (@a-sr)
• Ensure that reactions consistently trigger banks #1289 (@edwardalee)
• Cpp: fix triggering of reactions in multiple nested reactors #1286 (@cmnrd)
• Fix to ensure the ordering of reactions relative to modes is correct #1303 (@a-sr)

🚧 Maintenance and Refactoring

• Machine-applicable refactorings #1224 (@petervdonovan)
• Inclusion of reactor-rs as a submodule #1296 (@cmnrd)

⬆️ Updated Dependencies

• Upgrade to Xtext 2.27.0 and Lsp4j 0.14.0 #1234 (@lhstrh)
• Bump Klighd version to 2.2 #1297 (@a-sr)

Submodule lf-lang/reactor-c

✨ Enhancements

• New handling of startup/shutdown/reset reactions in modes #79 (@a-sr)
• STP violations now result in error messages #82 (@edwardalee)
• Removal of TAN messages and new capability to record in-transit messages in the RTI #61 (@Soroosh129)

🔧 Fixes

• Patch to ensure that deadlines with zero delay are never met #86 (@billy-bao)

Submodule lf-lang/reactor-cpp

✨ Enhancements

• Nix tooling expanded with cachegrind, callgrind, and memtest #13 (@revol-xut)
• Relocation of unistd.h and execinfo.h includes to void namespace pollution #14 (@erlingrj)
• Fixes that addresses warnings reported by clang-tidy #15 (@cmnrd)
• Optimized port communication for scalar types #17 (@cmnrd)

🔧 Fixes

• Fix to allow ports to have both triggers and further bindings #16 (@cmnrd)

Submodule lf-lang/reactor-rs

• No Changes

Submodule lf-lang/reactor-ts

🚀 New Features

• JSON serialization #99 (@CloverCho)

🧪 Tests

• Increased coverage of unit tests in bank.ts, multiport.ts and port.ts #100 (@goekberk)

Lingua Franca 0.2.1

v0.2.1 (2022-06-01)

Highlights:

This release includes bug fixes related to IDE tooling and federated execution. Various code cleanups and refactoring efforts have also been included in this release.

Full Changelog

Implemented enhancements:

• Introduce a thread-safe logging API for Rust #1138 (@cmnrd)
• Turn warning for absence of main reactor into an informational message #1113 (@edwardalee)
• Adjusted build to fall back to python command if python3 is not available #1197 (@Soroosh129)
• Add more suitable default template for LF projects to Epoch #1180 (@lhstrh)
• Add support for the STP handler to the Python target #1176 (@Soroosh129)
• Add federated docker file generation for TS target #1165 (@housengw)
• Smarter default number of workers in C runtime #1139 (@erlingrj)
• Add support for interleaved operator to Rust target #1133 (@jhaye)
• Change TS generator to support serialization of communication in federated execution #1125 (@CloverCho)

Fixed bugs:

• Default template for "New LF Project" is federated program #1172 (@lhstrh)
• Stop time is not handled correctly with decentralized coordination #1166 (@Soroosh129)
• Federated feedback with delay falsely detects cycles #1086 (@edwardalee)
• Repair LSP tests #1199 (@petervdonovan)
• Fix segfault for internally disconnected output ports #1195 (@Soroosh129)
• Restore the ability to put the RTI on a remote machine #1164 (@edwardalee)
• Fix segfault in python target argument handling #1161 (@housengw)
• Fixed a few calls to deprecated functions that were missed #1131 (@edwardalee)

Closed issues:

• GitHub Actions unable to install Java due to problems with Cloudflare CDN #1196 (@Soroosh129)
• Maven build failing on MacOS #1153 (@edwardalee)
• "Required target resource not found" in Epoch 0.2.0 #1142 (@erlingrj)

Merged pull requests:

• Augmented ErrorReporter API with informational messages #1192 (@zekailin00)
• Update path to new documentation website in generated Dockerfile #1187 (@erlingrj)
• Improve warning message when zero reactions in program #1186 (@erlingrj)
• Fix white space issues in Lingua Franca test code #1185 (@petervdonovan)
• Fix whitespace in tests #1183 (@petervdonovan)
• Fix LSP test in expressions branch #1182 (@petervdonovan)
• Address LSP test failures. #1179 (@petervdonovan)
• Logging cleanups for VS Code #1174 (@petervdonovan)
• Added federated tests for TypeScript target #1159 (@suyourice)
• Update deprecated API in ui examples and tests #1155 (@housengw)
• Remove trailing whitespace in C and Python generators #1154 (@housengw)
• Have Epoch welcome page point to website rather than wiki page #1152 (@edwardalee)
• Major refactor of the docker generators #1150 (@housengw)
• Update references to deprecated APIs in C ui examples #1144 (@housengw)
• lf_ prefix more functions and reorganize files in C target #1143 (@housengw)
• Refactor doGenerate in C generator and parts of Python and Typescript docker generators #1141 (@housengw)
• Disable pylint c-extension-no-member warning #1140 (@housengw)
• Check for Java 17 in lfc scripts and properly exit on error #1136 (@cmnrd)
• Let package_lfc script put files in appropriately named directory #1135 (@lhstrh)
• Update references to deprecated print APIs in python target #1134 (@housengw)
• Drop PermSize and MaxPermSize options as they are not supported by Java 17 #1132 (@cmnrd)
• Do not create the temporary dependency link if a connection between f… #1085 (@edwardalee)
• Replace Value with Expression in the grammar #1023 (@cmnrd)
• Scale back LSP tests #944 (@petervdonovan)

Lingua Franca 0.2.0

v0.2.0 (2022-05-01)

Highlights:

This release brings the minimum version requirement of Java to 17, which is a long-term support version that is also broadly supported by newer platforms (e.g., Apple silicon). Other changes included in this release are: a refactoring of the user-facing API of reactor-c, various bugfixes and enhancements of Rust, TypeScript, and C target, and minor improvements of the diagram synthesis.

Full Changelog

Implemented enhancements:

• The Rust target should support the 'workers' and 'threading' target properties #991 (@jhaye)
• Optionally suppress the red No Main Reactor icon #1089 (@edwardalee)

Fixed bugs:

• Segfault when calling _lf_check_deadline #1123 (@housengw)
• In generated Rust code, logical actions in main reactors aren't mutable, making them not schedulable #1110 (@jhaye)
• Add categories explicitly to the diagram synthesis options #1119 (@soerendomroes)

Closed issues:

• User facing utility functions such as info_print should also have lf_ prefix #1124 (@housengw)
• Tracking the renaming of APIs in C and Python target #1108 (@housengw)
• Remove logic for handling examples from testing framework #1079 (@lhstrh)

Merged pull requests:

• Prefix print functions with lf_ #1127 (@housengw)
• Fix set executing_reaction in self struct #1126 (@housengw)
• Remove references to deprecated APIs in the code generator #1122 (@housengw)
• Update Python target APIs to match the C target updates #1116 (@housengw)
• Update SET, schedule and tag APIs in the C target #1103 (@housengw)
• Remove redundant struct and related code in python target #1102 (@housengw)
• Allow bank_index in initializers #1101 (@edwardalee)
• Added support for state variables in diagrams #1100 (@a-sr)
• Support inline code arguments on main reactor for Rust target #1099 (@jhaye)
• Add support for threading compiler flag to Rust target #1098 (@jhaye)
• Update SET, schedule and tag APIs in the C target #1097 (@housengw)
• Java configuration bumped to version 17 #1094 (@lhstrh)
• Add validation tests for ports in main or federated reactor #1091 (@housengw)
• Update and add federated execution tests for TypeScript target #1062 (@hokeun)

Lingua Franca 0.1.0

v0.1.0 (2022-04-11)

Highlights:

This is the first stable release of Lingua Franca. Aside from numerous bugfixes, a number of new features have been introduced since v0.1.0-beta, including: generation of ROS2 nodes directly from LF code (C++); improved error handling; support for multiports and banks (TypeScript); modular support for runtime schedulers (C); and modal reactors (C and Python). Finally, a major refactoring has been performed in which all remaining Xtend code was ported to Java.

Full Changelog

Implemented enhancements:

• Add a -v / --version flag to lfc #927
• Produce informative message when lfc is run on non-LF files #919
• Make Docker generation compatible with the files target property #887
• Preconfigure Epoch with example projects #374
• In banks of reactors, make bank_index a proper parameter #343
• Align the meaning of the threads target property across targets #290
• Improve Stability of Positioning Edges connected to Reactions in Diagrams #1040 (@a-sr)
• Improve layout options #1015 (@soerendomroes)
• Support modal models in Python #1009 (@edwardalee)
• Replace the 'threads' target property with the 'workers' and 'threading' properties #993 (@cmnrd)
• Docker files property #987 (@housengw)
• Enable generation of ROS2 nodes directly from C++ code #984 (@cmnrd)
• Added --version flag to lfcand improved error messages #979 (@cmnrd)
• Improve warning message for unrecognized target parameters #964 (@cmnrd)
• Add bank & multiport support in TypeScript code generator with > 30 multiport tests. #942 (@hokeun)
• Added support for modular scheduler in C runtime #743 (@Soroosh129)
• Added support for Modal Models #501 (@a-sr)

Fixed bugs:

• Tracing does not get enabled in all files of reactor-c #1067
• C benchmark PingPong is broken #1058
• Command line argument -w does not work. #1056
• Maven build is broken #1033
• FilterBank benchmark in C++ has cycles #1031
• EclipseErrorReporter reports errors in the wrong file #1030
• Dependency cycle detection does not seem to work #1024
• Spurious warnings in Epoch #1016
• Error reporting in Epoch is broken #994
• Epoch fails to highlight errors on codegen #966
• Some cargo errors are not reported in LF #936
• Files without main don't compile if they have imports #913
• Invalid time literal causees IllegalArgumentException #908
• Reactor extending itself causes StackOverflowError #907
• Having multiple unnamed main reactors causes nullPointerException #905
• Catch errors from the TS type checker in the examples category #405
• Fixed an issue with bank_index #1087 (@Soroosh129)
• Fix bug where tracing does not get fully enabled #1068 (@hokeun)
• Fix errors in tracing util. #1043 (@hokeun)
• Properly recognize network message actions in TypeScript generator #1042 (@hokeun)
• [error reporting] Correct bugs reported on Epoch #1038 (@petervdonovan)
• Fix handling of ganged connections #1037 (@edwardalee)
• Broaden a pylint ignore. #1029 (@petervdonovan)
• Fixed causality loop detection bug #1026 (@edwardalee)
• Suppress line-too-long warnings in the Python target. #1018 (@petervdonovan)
• [C] do not generate code without main reactor #1000 (@housengw)
• Check for null reactor to avoid NPE #998 (@edwardalee)
• Fix eclipse error reporting #995 (@cmnrd)
• Epoch error reporting #967 (@edwardalee)
• Detect and flag and as error multiple mains #965 (@edwardalee)
• Inheritance cleanups #962 (@edwardalee)
• Fixes #768 #952 (@housengw)
• Report raw, unparsed error streams as a last resort. #941 (@petervdonovan)

Closed issues:

• Epoch fails on valid file #1027
• List modal reactor tests in own test category #1020
• Merge JavaAstUtils and ASTUtils #1003
• Kotlin classes do not get build by buildLfc task (unless the clean task is also run) #930
• Navigate to imported reactors in diagrams #889
• Port Xtend classes to Java #838
• Use the same implementation of deque accross all C benchmarks #765
• Use the BenchmarkRunner reactor in all C benchmarks #764
• Build both Epoch with maven and lfc with gradle in our CI workflow #575
• Declutter repo and move into separate Github Organization #347
• C syntax for referencing parameters and state variables #82

Merged pull requests:

• Switched to building the Python extension module in-place #1088 (@Soroosh129)
• Remove example directory #1077 (@lhstrh)
• Remove experimental directory #1076 (@lhstrh)
• Accommodations for automated version changes #1071 (@lhstrh)
• Enable tycho-versions-plugin to manage versioning #1070 (@lhstrh)
• Commented out annotation of outputs on transitions #1065 (@edwardalee)
• Fixed Problem with Mode Transitions and Edges in VS Code #1063 (@a-sr)
• Fix network sender reaction multiport #1061 (@Soroosh129)
• Fix missing -w command line argument #1060 (@housengw)
• Improved Support for Imported Reactors in Diagrams #1055 (@a-sr)
• The files target property: Add support for directories #1053 (@Soroosh129)
• Removed all Xtend dependencies #1051 (@housengw)
• Removed broken dependency on org.eclipse.xpand.feature.group #1050 (@lhstrh)
• Port CGenerator.xtend to Java #1049 (@housengw)
• Replace all tabs with spaces in the org.lflang.diagrams package #1047 (@a-sr)
• Partial refactoring of CGenerator.xtend #1045 (@housengw)
• Another refactoring of CGenerator.xtend #1035 (@housengw)
• ASTUtils cleanup [#1022](ht...

Lingua Franca Beta

Full Changelog: v0.1.0-alpha...v0.1.0-beta

Compiler

• Reduced size of generated C code when using banks and multiports (#759 and #875)
• Significantly reduced memory footprint and compilation time (#759 and #875)
• Ported the C++ code generator to Kotlin (#345)
• Ported the TypeScript code generator to Kotlin (#431, #486)
• Added enforcement of LF scoping rules in generated C++ code (#375)
• Fixed support for generic reactors in the C++ target (#467)
• Dropped the rebuild feature of lfc (#530)
• Fixed after for various complex connection patterns (#541, #553, #593)
• Improved error reporting in the standalone compiler (#543)
• The C target now uses CMake to compile generated code (#402)

Dependencies

• eclipse.core.resources 3.15.0 -> 3.16.0 (#829)
• eclipse.core.runtime 3.22.0 -> 3.24.0 (#829)
• exec-maven-plugin 1.6.0 -> 3.0.0 (#829)
• gradle 6.5 -> 7.0 (#829)
• junit 4.12 -> 4.13.2 (#829)
• junit-jupiter-* 5.7.2 -> 5.8.2 (#829)
• junit-platform-* 1.7.2 -> 1.8.2 (#829)
• kotlin 1.4.10 -> 1.6.10 (#866)
• lsp4j 0.10.0 -> 0.12.0 (#829)
• shadowJar 6.0.0 -> 7.1.2 (#829)
• xtext-gradle-plugin -> 2.0.8 -> 3.0.0 (#829)

Federation support

• Added support for federated Python programs
• Added support for federated TypeScript programs (#538, #596, #646, reactor-ts#71)
• Enhanced support for Docker containers (including for federated programs) (#700, #750, #754)
• Added built-in support for ROS 2 serialization (#449)
• RTI is now a standalone application (#395)

Language

• Introduced syntax for method definitions (currently only supported by the C++ target) (#382)
• Added support for giving widths of banks and multiports as runtime parameters or target code in the C++ target (#387, #420)
• Added syntax for interleaved connections (#416)
• Created a new Rust target (#488, #628)
• Added the CCpp target, which accepts C++ code but is supported by the C runtime (#513)

Platform support

• LF programs with the TypeScript target can now be compiled on Windows (#850).
• Added Windows support for the C and Python targets (#532)

Runtime

• Implemented the Savina benchmark suite in the C, C++, and Rust target (modulo those that require mutations)
• Improved performance of the C++ runtime considerably

Python

• Multiports and banks are now iterable in the Python target (#713)
• Fixed an issue where top-level custom Python classes were being serialized incorrectly
• bank_index (useful for banks of reactors) is now a proper parameter (#424)
  that can be passed down the reactor hierarchy via parameter assignment.

Tool support

• Created an Language and Diagram Server that enables our new VS Code extension

VS Code extension

• Generated code is now validated when an LF file is saved for all targets except C (#828). Generated C code is only validated when it is fully compiled.

Epoch

• Added compile button as an alternative to the Eclipse automatic build feature (#848)
• Added terminal window support (#509)
• Updated icons

Utilities

• Added tools for exporting dependency information from the C++ runtime (#788)
• Added tracing support for the Python target (#568)
• Added a script for conveniently running benchmarks (#243)
• Added version bump script (#829)

Lingua Franca Alpha

This is a preliminary release of the Lingua Franca Compiler (lfc), a command-line code generator that translates Lingua Franca programs into target language programs, and an Eclipse-based IDE (integrated development environment) that provides a sophisticated editor as well as a code generator. This release supports four target languages: C, C++, Python, and Typescript. See documentation. Of the four target languages, C is the most complete. It supports all documented language features including an experimental implementation of federated execution.

The IDE is suitable for the following platforms:

• Linux (lingua-franca-rca-0.1.0-alpha-linux.gtk.x86_64.tar.gz)
• MacOS (lingua-franca-rca-0.1.0-alpha-macosx.cocoa.x86_64.tar.gz)
  • IMPORTANT NOTE: MacOS will report that lflang.app is broken because it was not signed. To execute it, please run xattr -cr lflang.app first on the command line. Eventually, we will provide a signed download.
• Windows (lingua-franca-rca-0.1.0-alpha-win32.x86_64.zip)

The lfc command line application is suitable for:

• Linux, MacOS (lfc-0.1.0-alpha.tar.gz)
• Windows (lfc-0.1.0-alpha.zip)

System Requirements

• Java 11 or up (download from Oracle)
• Various target-specific dependencies, documented here

IDE Features

• code generation
• diagram synthesis
• error forwarding from target compiler
• validation

Language Features (see language specification)

• imports
• banks
• multiports
• list-valued parameters
• target properties
• time type

Targets

• C
• C++
• Python
• TypeScript