Calculate severity level based on the project not on the problem

ApiProblem.getSeverity() always returns the workspace defaults because
it always passes null. Also the method is actually never used inside API
Tools.

Instead we recalculate the real severity based on the currently
processed project.

tycho-apitools-plugin/src/main/java/org/eclipse/tycho/apitools/ApiAnalysis.java

@@ -156,7 +156,9 @@ public void aboutToRun(IJobChangeEvent event) {
 		disableJVMDiscovery();
 		setTargetPlatform();
 		deleteAllProjects();
-		BundleComponent projectComponent = importProject();
+		IPath projectPath = IPath.fromOSString(projectDir);
+		IProject project = getProject(projectPath);
+		BundleComponent projectComponent = getApiComponent(project, projectPath);
 		IApiBaseline baseline = createBaseline(baselineBundles, baselineName + " - baseline");
 		ResolverError[] resolverErrors = projectComponent.getErrors();
 		if (resolverErrors != null && resolverErrors.length > 0) {
@@ -173,7 +175,7 @@ public void aboutToRun(IJobChangeEvent event) {
 					new NullProgressMonitor());
 			IApiProblem[] problems = analyzer.getProblems();
 			for (IApiProblem problem : problems) {
-				result.addProblem(problem);
+				result.addProblem(problem, project);
 				debug(String.valueOf(problem));
 			}
 		} finally {
@@ -191,21 +193,7 @@ private void disableJVMDiscovery() {
 		instanceNode.putBoolean(LaunchingPlugin.PREF_DETECT_VMS_AT_STARTUP, false);
 	}
 
-	private BundleComponent importProject() throws CoreException, IOException {
-		IPath projectPath = IPath.fromOSString(projectDir);
-		IPath projectDescriptionFile = projectPath.append(IProjectDescription.DESCRIPTION_FILE_NAME);
-		IProjectDescription projectDescription = ResourcesPlugin.getWorkspace()
-				.loadProjectDescription(projectDescriptionFile);
-		projectDescription.setLocation(projectPath);
-		projectDescription.setBuildSpec(new ICommand[0]);
-		// FIXME ApiTools wrongly assumes that the location matches the project name
-		// see: https://github.com/eclipse-pde/eclipse.pde/issues/789
-		// therefore we here must not use projectDescription.getName() but
-		// projectPath.lastSegment() ...
-		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectPath.lastSegment());
-		project.create(projectDescription, new NullProgressMonitor());
-		project.open(new NullProgressMonitor());
-		createOutputFolder(project, projectPath);
+	private BundleComponent getApiComponent(IProject project, IPath projectPath) throws CoreException, IOException {
 		IApiBaseline workspaceBaseline = ApiPlugin.getDefault().getApiBaselineManager().getWorkspaceBaseline();
 		IApiComponent component = workspaceBaseline.getApiComponent(project);
 		if (component instanceof ProjectComponent projectComponent) {
@@ -235,6 +223,23 @@ private BundleComponent importProject() throws CoreException, IOException {
 		throw new RuntimeException("Can't import project");
 	}
 
+	private IProject getProject(IPath projectPath) throws CoreException, IOException {
+		IPath projectDescriptionFile = projectPath.append(IProjectDescription.DESCRIPTION_FILE_NAME);
+		IProjectDescription projectDescription = ResourcesPlugin.getWorkspace()
+				.loadProjectDescription(projectDescriptionFile);
+		projectDescription.setLocation(projectPath);
+		projectDescription.setBuildSpec(new ICommand[0]);
+		// FIXME ApiTools wrongly assumes that the location matches the project name
+		// see: https://github.com/eclipse-pde/eclipse.pde/issues/789
+		// therefore we here must not use projectDescription.getName() but
+		// projectPath.lastSegment() ...
+		IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectPath.lastSegment());
+		project.create(projectDescription, new NullProgressMonitor());
+		project.open(new NullProgressMonitor());
+		createOutputFolder(project, projectPath);
+		return project;
+	}
+
 	private void createOutputFolder(IProject project, IPath projectPath) throws IOException, CoreException {
 		IJavaProject javaProject = JavaCore.create(project);
 		if (javaProject != null) {

tycho-apitools-plugin/src/main/java/org/eclipse/tycho/apitools/ApiAnalysisResult.java

@@ -17,6 +17,7 @@
 import java.util.List;
 import java.util.stream.Stream;
 
+import org.eclipse.core.resources.IProject;
 import org.eclipse.osgi.service.resolver.ResolverError;
 import org.eclipse.pde.api.tools.internal.provisional.problems.IApiProblem;
 
@@ -33,8 +34,8 @@ public Stream<ResolverError> resolveErrors() {
 		return resolveError.stream();
 	}
 
-	public void addProblem(IApiProblem problem) {
-		problems.add(new ApiProblemDTO(problem));
+	public void addProblem(IApiProblem problem, IProject project) {
+		problems.add(new ApiProblemDTO(problem, project));
 	}
 
 	public void addResolverError(ResolverError error) {

tycho-apitools-plugin/src/main/java/org/eclipse/tycho/apitools/ApiProblemDTO.java

@@ -14,6 +14,9 @@
 
 import java.io.Serializable;
 
+import org.eclipse.core.resources.IProject;
+import org.eclipse.pde.api.tools.internal.problems.ApiProblemFactory;
+import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin;
 import org.eclipse.pde.api.tools.internal.provisional.problems.IApiProblem;
 
 public class ApiProblemDTO implements IApiProblem, Serializable {
@@ -34,8 +37,8 @@ public class ApiProblemDTO implements IApiProblem, Serializable {
 	private final int flags;
 	private final String toString;
 
-	public ApiProblemDTO(IApiProblem problem) {
-		severity = problem.getSeverity();
+	public ApiProblemDTO(IApiProblem problem, IProject project) {
+		severity = ApiPlugin.getDefault().getSeverityLevel(ApiProblemFactory.getProblemSeverityId(problem), project);
 		elementKind = problem.getElementKind();
 		messageid = problem.getMessageid();
 		resourcePath = problem.getResourcePath();