Problems with component deletion in performance test

[tamasborbas]

If a component has been removed then its xtuml pair will be dirty. Then in CodeGenerationPhase we try to get dirty xtuml components' pairs but for removed xtuml component it will add null to the list of cpp components. When we iterate on this list and call executeCppCodeGeneration with null cpp component (the pair of the removed xtuml component) the method will throw IllegalArgumentException.

The problematic code snippet from CodeGenerationPhase

val dirtyComponents = changeMonitor.dirtyXTComponents

val cppComponents = dirtyComponents.map[ xtComponent |
    mcToken.toolchainManager.engine.cppComponents.getAllValuesOfcppComponent(xtComponent).head
]
if(mcToken.cppSourceFileContents == null) {
    mcToken.cppSourceFileContents = <CPPSourceFile, CharSequence>newHashMap
}
cppComponents.forEach[ cppComponent |
    val cppSourceFileContentsForComponent = mcToken.toolchainManager.executeCppCodeGeneration(cppComponent)
    mcToken.cppSourceFileContents.putAll(cppSourceFileContentsForComponent)
]

Note: Will high level package deletion also cause problems?