diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000000000000000000000000000000000000..1d6c4f34a06b11c3e604376030cb7215c2841bfa
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,85 @@
+# Process to contribute new features or to fix bugs
+
+To propose a new feature, or to report a bug, first [create an issue][create-issue] and add labels accordingly.
+Working on such issues is done by creating a merge request from the issue page, which 1) creates a new branch to work on, and 2) creates a new WIP merge request for the new branch.
+Once done (and new tests are written to ensure, a bug is really fixed, and the feature does the right thing), the merge request will be accepted and merged into `master`.
+
+# Creating normal test cases
+
+A test usually defines a grammar, optionally some attributes and a Test class.
+It then normally runs RelAST followed by JastAdd.
+To create a new test, the following four ingredients are involved:
+
+## Specification
+
+Here, the grammar and attributes to be compiled are contained.
+Use `src/test/jastadd/$YourTestName` as directory to put your files into.
+All generated `*.ast`, `*.jadd` and `ResolverStubs.jrag` are already ignored by the main `.gitignore`.
+
+## Generated Java files
+
+Usually, all files are generated into a separate directory in `src/test/java-gen/`.
+This location can be [configured](#build-configuration).
+
+## Build configuration
+
+Currently, the test setup is configured within `build.gradle` using a specialized Gradle task `RelastTest`.
+An example configuration might look like:
+
+```groovy
+task compileMultipleTest(type: RelastTest) {
+ relastFiles 'src/test/jastadd/multiple/Part1.relast',
+ 'src/test/jastadd/multiple/Part2.relast',
+ 'src/test/jastadd/multiple/Part3.relast'
+ grammarName = 'src/test/jastadd/multiple/Multiple'
+ useJastAddNames = true
+ packageName = 'multiple.ast'
+ moreInputFiles 'src/test/jastadd/Utils.jadd'
+}
+```
+
+The following options are supported, similar to the [command-line options](/../#supported-command-line-options):
+
+| Name | Description | Required | Default |
+|-------------------|--------------------------------------------------------------------------------------------------------|--------------------|---------------------|
+| `relastFiles` | Input grammar(s). Either one or multiple files separated by comma. | Yes | _none_ |
+| `grammarName` | Directory and file prefix for the generated grammar and jrag created by RelAST. | Yes | _none_ |
+| `useJastAddNames` | Set to `true` to use accessor names for relations matching JastAdd naming convention. | No | `false` |
+| `packageName` | Name of the package for the Java files generated by JastAdd. | Yes (not enforced) | The empty package |
+| `moreInputFiles` | Additional files as input for JastAdd. | No | No additional files |
+| `resolverHelper` | Set to `true` to generate means for lazy resolving. | No | `false` |
+| `jastAddList` | Alternative name for `List` nodes. Will be passed to both RelAST and JastAdd. | No | `List` |
+| `serializer` | Name of supported serializer. One of {`jackson`, `jackson-json-pointer`, `jackson-manual-references`}. | No | No serializer |
+
+## Test files
+
+The actual test source, usually located in `src/test/java/` in the package `org.jastadd.relast.tests`.
+Pay attention to import the correct nonterminal classes by using the same package as [configured](#build-configuration).
+This project uses JUnit 5 as test framework.
+
+# Creating special tests
+
+Aside from the [normal tests](#creating-normal-test-cases), there are some special tests.
+
+## Negative parser tests
+
+To check, errors are found and contain the correct messages, one test [`Errors`](/../blob/master/src/test/java/org/jastadd/relast/tests/Errors.java) is used.
+Here, the RelAST compiler is invoked manually, and the actual error messages are compared to expected ones for each grammar in `src/test/jastadd/errors`.
+The expected messages can contain the special word `$FILENAME` to refer to the filename of the grammar, if there is only one, or `$FILENAME1`, `$FILENAME2` etc., if there are many.
+Furthermore, empty lines, lines starting with `//` and the order of the error messages are ignored.
+
+## Output diff
+
+Currently, there is one test to test whether the output of RelAST is a valid input for RelAST and produces the same output again.
+To achieve this, there are two Gradle tasks. The first produces the usual `.ast` and `.jadd` files, whereas the second task takes the `.ast` as input.
+The test then ensures, that both output grammars are identical.
+
+# Publishing
+
+To publish a new version, the following needs to be done:
+
+1) Create a new annotated tag with an appropriate version number increase (major, minor, patch) described in [semantic versioning](https://semver.org/)
+2) If not already present, create a new file `gradle.properties` with two entries `repoUser` and `repoPassword` for our Nexus repository.
+3) Run `./gradlew publish -PwithNewVersion` (maybe also adding ` -PasSnapshot` to create a SNAPSHOT release)
+
+[create-issue]: https://git-st.inf.tu-dresden.de/jastadd/relational-rags/issues/new
diff --git a/README.md b/README.md
index 1631b8744d37ed6619bfe85626c14853c1e5e489..da4ab0d84628e3cf7f193d23e55f6e0a5350ace5 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,20 @@ Note that you may have to change
- the directory of `relast.jar`
- the `.relast` file(s) both as argument(s) and input file(s)
- the output files
-- parameters of RelAST (in this case, the list classes were renamed)
+- parameters of RelAST (in this case, the list classes were renamed), the following table shows the supported ones
+
+## Supported command-line options
+
+| Name | Description | Default |
+|---------------------|------------------------------------------------------------------------------------------------------|---------------|
+| `--ast` | Print AST (ignores `--quiet` option) | Do not print |
+| `--grammarName` | Directory and file prefix for the generated grammar and jrag created by RelAST. | `Grammar` |
+| `--jastAddList` | Alternative name for `List` nodes (has to match the option `--List` of JastAdd or its default List). | `List` |
+| `--listClass` | Set the class name of the nonterminal reference list | `ArrayList` |
+| `--quiet` | Do not output anything on stdout. | Normal output |
+| `--resolverHelper` | Set to `true` to generate means for lazy resolving. | `false` |
+| `--serializer` | Generate a (de-)serializer. One of {`jackson`, `jackson-json-pointer`, `jackson-manual-references`}. | No serializer |
+| `--useJastAddNames` | Set to `true` to use accessor names for relations matching JastAdd naming convention. | `false` |
## Supported relations
diff --git a/build.gradle b/build.gradle
index d705e2ebf584482f693317c312108bd48a8d895b..2ed112db538194d79bc4794f60b87156903614bf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -151,49 +151,26 @@ task updateVersion {
processResources.dependsOn updateVersion
-task preprocessRelationTest(type: JavaExec, group: 'verification') {
-
- doFirst {
- delete 'src/test/jastadd/relations/Relations.ast', 'src/test/jastadd/relations/Relations.jadd'
- }
-
- classpath = sourceSets.main.runtimeClasspath
- main = 'org.jastadd.relast.compiler.Compiler'
- //noinspection GroovyAssignabilityCheck
- args 'src/test/jastadd/relations/Relations.relast', '--quiet', '--useJastAddNames', '--file', '--grammarName=src/test/jastadd/relations/Relations'
-}
-
-task doublePreprocessRelationTest(type: JavaExec, group: 'verification') {
-
- doFirst {
- delete 'src/test/jastadd/relations/Relations2.ast', 'src/test/jastadd/relations/Relations2.jadd'
- }
-
- classpath = sourceSets.main.runtimeClasspath
- main = 'org.jastadd.relast.compiler.Compiler'
- //noinspection GroovyAssignabilityCheck
- args 'src/test/jastadd/relations/Relations.ast', '--quiet', '--useJastAddNames', '--file', '--grammarName=src/test/jastadd/relations/Relations2'
+task firstRelationsRun(type: RelastTest) {
+ relastFiles 'src/test/jastadd/relations/Relations.relast'
+ grammarName = 'src/test/jastadd/relations/Relations'
+ useJastAddNames = true
+ packageName = 'relations.ast'
+ moreInputFiles 'src/test/jastadd/Utils.jadd'
}
-task compileRelationTest(type: JavaExec, group: 'verification') {
+task secondRelationsRun(type: RelastTest, dependsOn: firstRelationsRun) {
+ relastFiles 'src/test/jastadd/relations/Relations.ast'
+ grammarName = 'src/test/jastadd/relations/Relations2'
+ useJastAddNames = true
+ packageName = 'ignored'
- doFirst {
- delete 'src/test/java-gen/relations'
+ doLast {
+ delete fileTree('src/test/java-gen/ignored')
+ delete 'src/test/java-gen/ignored'
}
-
- classpath = sourceSets.main.runtimeClasspath
- main = 'org.jastadd.JastAdd'
- //noinspection GroovyAssignabilityCheck
- args '--o=src/test/java-gen/', '--package=relations.ast',
- 'src/test/jastadd/relations/Relations.ast',
- 'src/test/jastadd/relations/Relations.jadd',
- 'src/test/jastadd/Utils.jadd'
}
-test.dependsOn compileRelationTest
-compileRelationTest.dependsOn doublePreprocessRelationTest
-doublePreprocessRelationTest.dependsOn preprocessRelationTest
-
task compileConstructorTest(type: RelastTest) {
relastFiles 'src/test/jastadd/constructors/Constructors.relast'
grammarName = 'src/test/jastadd/constructors/Constructors'