feat: jpms support

- feat: add `module-info.java` descriptor
- fix!: update annotation package path to `o.a.v.annotations.*`
- chore: upgrade jvm target → `11`
- chore: upgrade all maven plugins to latest
- chore: centralize maven plugin versions
- chore: centralize dependency versions
- chore: refactor build to fix dependency on old plugin version

This changeset introduces support for the Java Platform Module
System, or JPMS, within the ANTLR v4 runtime and annotations
packages.

The runtime package can now be depended on in downstream modules
with a `requires antlr.runtime` directive.

To facilitate this functionality, a breaking change had to be made
with regard to packages used for annotations. The following package
changes were made:

- `o.a.v.misc.NotNull` → `org.antlr.v4.annotations.NotNull`
- `o.a.v.misc.Nullable` → `org.antlr.v4.annotations.Nullable`
- `o.a.v.r.NullUsageProcessor` → `...processors.NullUsageProcessor`

Code generators, service definitions, and other references to these
classes were updated accordingly. This change was made to fix split
package issues between the ANTLR runtime and annotations modules,
which is banned under JPMS.

The JVM target was updated to JVM 11, which allows cleanup of older
JDK 1.6 and JDK 1.8 related build wiring. Reasoning: users of 1.6
and 1.8 do not need libs that support JPMS; building multi-release
JARs in Maven is hard and error-prone. There isn't much sense in
setting a JVM target of 9 or 10, so 11 is the new standard.

Additionally, the codebase now uses a bootstrap JAR to facilitate
code-gen in `antlr4-runtime`; this bootstrap JAR is located in the
`lib/` folder and automatically installed for the developer if they
use either `./mvnw` (also added) or `./bootstrap.sh`.

This bootstrap JAR will allow iteration on the code generator
without needing to release a new plugin version.

Signed-off-by: Sam Gammon <[email protected]>

Author: sgammon

.gitignore

@@ -29,4 +29,5 @@ nbactions*.xml
 # Playground
 #/tool/playground/
 
-.vscode/
+.vscode/
+.boot

.mvn/wrapper/maven-wrapper.jar

@@ -0,0 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://maven.pkg.st/org/apache/maven/apache-maven/3.9.6/apache-maven-3.9.6-bin.zip
+wrapperUrl=https://maven.pkg.st/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar

.mvn/wrapper/maven-wrapper.properties

@@ -13,21 +13,21 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.9.1-SNAPSHOT</version>
+        <version>4.10.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>antlr4-maven-plugin</artifactId>
     <packaging>maven-plugin</packaging>
 
     <name>ANTLR 4 Maven plugin</name>
     <description>Maven plugin for ANTLR 4 grammars</description>
-    <url>http://www.antlr.org</url>
+    <url>https://www.antlr.org</url>
 
     <prerequisites>
         <maven>3.0</maven>
     </prerequisites>
 
-    <!-- Ancilliary information for completeness
+    <!-- Ancillary information for completeness
       -->
     <inceptionYear>2009</inceptionYear>
 
@@ -48,20 +48,17 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-plugin-api</artifactId>
-            <version>3.0.5</version>
-            <scope>compile</scope>
+            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.codehaus.plexus</groupId>
             <artifactId>plexus-compiler-api</artifactId>
-            <version>2.2</version>
         </dependency>
 
         <dependency>
             <groupId>org.sonatype.plexus</groupId>
             <artifactId>plexus-build-api</artifactId>
-            <version>0.0.7</version>
         </dependency>
 
         <!--
@@ -79,73 +76,60 @@
           Testing requirements...
           -->
         <dependency>
-
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13.1</version>
             <scope>test</scope>
-
         </dependency>
 
         <dependency>
             <groupId>io.takari.maven.plugins</groupId>
             <artifactId>takari-plugin-testing</artifactId>
-            <version>2.9.0</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.plugin-tools</groupId>
             <artifactId>maven-plugin-annotations</artifactId>
-            <version>3.2</version>
             <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-compat</artifactId>
-            <version>3.0.5</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.codehaus.plexus</groupId>
             <artifactId>plexus-utils</artifactId>
-            <version>3.0.15</version>
-            <scope>provided</scope>
+            <scope>test</scope>
         </dependency>
 
         <!-- Must be last or tests will fail -->
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-project</artifactId>
-            <version>2.2.1</version>
+            <scope>provided</scope>
         </dependency>
 
     </dependencies>
 
     <profiles>
         <profile>
             <id>maven-plugin-no-tests</id>
-            <activation>
-                <jdk>1.6</jdk>
-            </activation>
             <properties>
                 <skipTests>true</skipTests>
             </properties>
         </profile>
 
         <profile>
             <id>maven-plugin-tests</id>
-            <activation>
-                <jdk>!1.6</jdk>
-            </activation>
             <build>
                 <plugins>
                     <plugin>
                         <groupId>io.takari.maven.plugins</groupId>
                         <artifactId>takari-lifecycle-plugin</artifactId>
-                        <version>1.11.12</version>
+                        <extensions>true</extensions>
                         <executions>
                             <execution>
                                 <id>testProperties</id>
@@ -184,7 +168,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-plugin-plugin</artifactId>
-                <version>3.6.0</version>
                 <configuration>
                     <!-- see http://jira.codehaus.org/browse/MNG-5346 -->
                     <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
@@ -208,13 +191,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-site-plugin</artifactId>
-                <version>3.3</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-project-info-reports-plugin</artifactId>
-                <version>2.7</version>
                 <configuration>
                     <dependencyLocationsEnabled>false</dependencyLocationsEnabled>
                 </configuration>
@@ -229,13 +210,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-plugin-plugin</artifactId>
-                <version>3.3</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.9</version>
                 <configuration>
                     <quiet>true</quiet>
                 </configuration>
@@ -244,7 +223,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jxr-plugin</artifactId>
-                <version>2.3</version>
             </plugin>
         </plugins>
     </reporting>

antlr4-maven-plugin/pom.xml

@@ -6,7 +6,7 @@
 package org.antlr.mojo.antlr4;
 
 import org.antlr.v4.Tool;
-import org.antlr.v4.runtime.misc.NotNull;
+import org.antlr.v4.runtime.annotations.NotNull;
 import org.antlr.v4.tool.ANTLRMessage;
 import org.antlr.v4.tool.ANTLRToolListener;
 import org.apache.maven.plugin.logging.Log;

antlr4-maven-plugin/src/main/java/org/antlr/mojo/antlr4/Antlr4ErrorLog.java

@@ -9,7 +9,7 @@
 import org.antlr.v4.Tool;
 import org.antlr.v4.codegen.CodeGenerator;
 import org.antlr.v4.runtime.misc.MultiMap;
-import org.antlr.v4.runtime.misc.NotNull;
+import org.antlr.v4.runtime.annotations.NotNull;
 import org.antlr.v4.runtime.misc.Utils;
 import org.antlr.v4.tool.Grammar;
 import org.apache.maven.plugin.AbstractMojo;

antlr4-maven-plugin/src/main/java/org/antlr/mojo/antlr4/Antlr4Mojo.java

@@ -9,29 +9,29 @@
     <parent>
         <groupId>com.tunnelvisionlabs</groupId>
         <artifactId>antlr4-master</artifactId>
-        <version>4.9.1-SNAPSHOT</version>
+        <version>4.10.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>antlr4-testgen-maven-plugin</artifactId>
     <packaging>maven-plugin</packaging>
 
     <name>ANTLR 4 Test Generator Maven plugin</name>
     <description>Maven plugin for generating ANTLR 4 runtime tests</description>
-    <url>http://www.antlr.org</url>
+    <url>https://www.antlr.org</url>
 
     <prerequisites>
         <maven>3.0</maven>
     </prerequisites>
 
-    <!-- Ancilliary information for completeness
+    <!-- Ancillary information for completeness
       -->
     <inceptionYear>2009</inceptionYear>
 
     <!-- ============================================================================= -->
 
     <!--
 
-     What are we depedent on for the Mojos to execute? We need the
+     What are we dependent on for the Mojos to execute? We need the
      plugin API itself and of course we need the ANTLR Tool and runtime
      and any of their dependencies, which we inherit. The Tool itself provides
      us with all the dependencies, so we need only name it here.
@@ -44,32 +44,28 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-plugin-api</artifactId>
-            <version>3.0.5</version>
-            <scope>compile</scope>
+            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-project</artifactId>
-            <version>2.2.1</version>
+            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>org.codehaus.plexus</groupId>
             <artifactId>plexus-compiler-api</artifactId>
-            <version>2.2</version>
         </dependency>
 
         <dependency>
             <groupId>org.sonatype.plexus</groupId>
             <artifactId>plexus-build-api</artifactId>
-            <version>0.0.7</version>
         </dependency>
 
         <dependency>
             <groupId>org.antlr</groupId>
             <artifactId>ST4</artifactId>
-            <version>4.0.8</version>
         </dependency>
 
         <dependency>
@@ -84,21 +80,18 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.shared</groupId>
             <artifactId>maven-plugin-testing-harness</artifactId>
-            <version>1.1</version>
             <scope>test</scope>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven.plugin-tools</groupId>
             <artifactId>maven-plugin-annotations</artifactId>
-            <version>3.2</version>
             <scope>provided</scope>
         </dependency>
 
@@ -118,7 +111,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-plugin-plugin</artifactId>
-                <version>3.3</version>
                 <configuration>
                     <!-- see http://jira.codehaus.org/browse/MNG-5346 -->
                     <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
@@ -142,13 +134,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-site-plugin</artifactId>
-                <version>3.3</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-project-info-reports-plugin</artifactId>
-                <version>2.7</version>
                 <configuration>
                     <dependencyLocationsEnabled>false</dependencyLocationsEnabled>
                 </configuration>
@@ -163,13 +153,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-plugin-plugin</artifactId>
-                <version>3.3</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.9</version>
                 <configuration>
                     <quiet>true</quiet>
                 </configuration>
@@ -178,7 +166,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jxr-plugin</artifactId>
-                <version>2.3</version>
             </plugin>
         </plugins>
     </reporting>

antlr4-testgen-maven-plugin/pom.xml

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+VERSION="4.10.0-BOOTSTRAP"
+
+echo "Installing boostrap runtime JAR...";
+mvn install:install-file \
+  -Dfile="./lib/antlr4-bootstrap.jar" \
+  -DgroupId="com.tunnelvisionlabs" \
+  -DartifactId="antlr4-runtime" \
+  -Dversion="$VERSION" \
+  -Dpackaging=jar
+
+echo "Installing boostrap Maven plugin JAR...";
+mvn install:install-file \
+  -Dfile="./lib/antlr4-bootstrap-maven-plugin.jar" \
+  -DgroupId="com.tunnelvisionlabs" \
+  -DartifactId="antlr4-maven-plugin" \
+  -Dversion="$VERSION" \
+  -Dpackaging=jar