chore: restore revapi (INRIA#3112)

Author: monperrus

chore/revapy.py

@@ -25,6 +25,17 @@ mvn -q  checkstyle:checkstyle -Pcheckstyle-test
 
 python ./chore/check-links-in-doc.py
 
+# compute the revapi API compatibility report
+mvn -U revapi:report
+cat ./target/revapi_report.md;
+if grep -q "changes.*: [123456789]" ./target/revapi_report.md;
+then
+  # post the revapi report as PR comment
+  # the CI job has the spoon-bot password to be able to post the revapi report as comment on the pull request
+  # source of the CI job: https://github.com/SpoonLabs/spoon-ci-config/blob/master/jenkins/jobs/push-comment-github.xml
+  curl -F file0=@./target/revapi_report.md -F json='{"parameter": [{"name":"revapi_report.md", "file":"file0"},{"name":"pull_request","value":"'$TRAVIS_PULL_REQUEST'"}]}' -v "https://ci.inria.fr/sos/job/push-comment-github/build?token=hgzer87954"
+fi
+
 ##################################################################
 # Spoon-decompiler
 ##################################################################

chore/travis/travis-extra.sh

@@ -198,25 +198,25 @@
                 <groupId>org.revapi</groupId>
                 <artifactId>revapi-maven-plugin</artifactId>
                 <!-- Lock down plugin version for build reproducibility -->
-                <version>0.9.5</version>
+                <version>0.11.1</version>
                 <dependencies>
                     <dependency>
                         <groupId>org.revapi</groupId>
                         <artifactId>revapi-java</artifactId>
-                        <version>0.14.4</version>
+                        <version>0.19.1</version>
                     </dependency>
                     <dependency>
                         <groupId>org.revapi</groupId>
                         <artifactId>revapi-reporter-text</artifactId>
-                        <version>0.8.1</version>
+                        <version>0.10.1</version>
                     </dependency>
                 </dependencies>
                 <configuration>
                     <failSeverity>breaking</failSeverity>
                     <alwaysCheckForReleaseVersion>false</alwaysCheckForReleaseVersion>
                     <oldVersion>LATEST</oldVersion>
                     <analysisConfigurationFiles>
-                        <file>../revapi.json</file>
+                        <file>revapi.json</file>
                     </analysisConfigurationFiles>
                 </configuration>
             </plugin>

spoon-pom/pom.xml

@@ -114,7 +114,8 @@ protected void handleTypeReference(CtTypeReference<?> reference, Context context
 		}
 	}
 
-	class Context {
+	/** a set of imports for a given compilation unit */
+	public class Context {
 		private CtCompilationUnit compilationUnit;
 		private Map<String, CtImport> computedImports;
 		private String packageQName;
@@ -295,7 +296,10 @@ void checkType(CtTypeReference<?> importTypeRef) {
 		return visitor.found;
 	}
 
-	class ImportCleanerScanner extends EarlyTerminatingScanner<Void> {
+	/**
+	 * A scanner that initializes context for a compilation unit.
+	 */
+	public class ImportCleanerScanner extends EarlyTerminatingScanner<Void> {
 		Context context;
 		@Override
 		protected void enter(CtElement e) {