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ProLeap COBOL • Analyze, Execute & Transform COBOL

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ProLeap ANTLR4-based analyzer, interpreter & transformer for COBOL
==================================================================

This is an analyzer, interpreter & transformer for COBOL based on [ProLeap COBOL parser](https://github.com/uwol/proleap-cobol-parser). The parser generates an **Abstract Syntax Tree** (AST) and **Abstract Semantic Graph** (ASG) for COBOL code, which then is processed by this analyzer, interpreter & transformer.

💫 **Star** if you like our work.

[![License: AGPL v3](https://img.shields.io/badge/License-AGPL%20v3-blue.svg)](https://www.gnu.org/licenses/agpl-3.0)
[![ProLeap on Twitter](https://img.shields.io/twitter/follow/proleap_io.svg?style=social&label=Follow)](https://twitter.com/proleap_io)

Getting started
---------------

In Eclipse open [ProLeapCobolEmbeddedJetty](proleap-cobol-app/src/main/java/io/proleap/cobol/ProLeapCobolEmbeddedJetty.java) and run the main method as Java application. A Jetty will start.

Support
-------

This program is free software under AGPL v3 license and in this form comes without support.

License
-------

This program is free software under AGPL v3 license. Source code generated by this program is [NOT subject to AGPLv3 licensing](https://www.gnu.org/licenses/gpl-faq.html#WhatCaseIsOutputGPL). You can use this program to transform COBOL to Java and keep the copyright for your code.

The AGPLv3 license is only meant for this program itself. Our idea is that a joint effort in the industry is needed to build an open source tooling for COBOL modernization. Hopefully, future source code contributions from the industry are flowing back into this program, making COBOL modernization increasingly feasible for companies.

Where to look next
------------------

- [ANTLR4 COBOL grammar](https://github.com/uwol/proleap-cobol-parser/tree/master/src/main/antlr4/io/proleap/cobol/Cobol.g4)
- [ANTLR4 COBOL preprocessor grammar](https://github.com/uwol/proleap-cobol-parser/tree/master/src/main/antlr4/io/proleap/cobol/CobolPreprocessor.g4)
- [Analysis unit tests](proleap-cobol-analysis/src/test/java/io/proleap/cobol/analysis)
- [Interpreter unit tests](proleap-cobol-interpreter/src/test/java/io/proleap/cobol/interpreter)
- [Transform unit tests](proleap-cobol-transform/src/test/java/io/proleap/cobol/transform)

Build dependency proleap-cobol-parser
-------------------------------------

* Clone repository [uwol/proleap-cobol-parser](https://github.com/uwol/proleap-cobol-parser) locally.
* As described in the README.md of that repository, run:

```
$ mvn clean install
```

* Now your local `~/.m2/repository` should contain dependency `io/github/uwol/proleap-cobol-parser`.
* In [Eclipse](https://eclipse.org) import the directory `proleap-cobol-parser` as an `existing Maven project`.

Build Process
-------------

The build process is based on Maven (version 3 or higher). Building requires a JDK 17.

* Clone or download the repository.
* In [Eclipse](https://eclipse.org) import the directory as a an `existing Maven project`. *Important*: Open Eclipse > Preferences > Maven > Annotation Processing and select "Automatically configure JDT APT", so that dependency injection framework [Micronaut](https://micronaut.io/) automatically processes all `@Inject` annotations.
* To build, run:

```
$ mvn clean package
```

* The test suite executes tests against COBOL test code.
* If error `Missing artifact io.github.uwol:proleap-cobol-parser:jar:4.0.0` comes up, please check that dependency `proleap-cobol-parser` has been properly installed by Maven as described above.
* If error `io.micronaut.context.exceptions.NoSuchBeanException: No bean of type ...` comes up, please check that Annotation Processing has been properly configured in Eclipse as described above. Optionally in Eclipse right-click the project then Maven > Update project.
* You should see output like this:

```
[INFO] Scanning for projects...
...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for proleap-cobol 1.0.0:
[INFO] 
[INFO] proleap-cobol ...................................... SUCCESS [  0.066 s]
[INFO] proleap-cobol-commons .............................. SUCCESS [  3.431 s]
[INFO] proleap-cobol-analysis ............................. SUCCESS [  6.682 s]
[INFO] proleap-cobol-interpreter .......................... SUCCESS [  4.164 s]
[INFO] proleap-cobol-transform ............................ SUCCESS [  4.180 s]
[INFO] proleap-cobol-app .................................. SUCCESS [ 14.306 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
```

* To install the JAR in your local Maven repository:

```
$ mvn clean install
```

* To only run the tests:

```
$ mvn clean test
```

* To deploy to Google Cloud (requires authentication):

```
$ mvn clean package -P jib-app
```

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