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eclipse / gemoc-studio-execution-ale

Gemoc studio execution ale
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NPE in launcher wizard if the ale key points to the wrong ale file #13

Open dvojtise opened 5 years ago

dvojtise commented 5 years ago

if the dsl file points to a non existing ale file then in the launch configuration, trying to browse for the main method raises a NullPointerException

java.lang.NullPointerException
    at org.eclipse.emf.ecoretools.ale.ide.WorkbenchDsl.pluginToFile(WorkbenchDsl.java:96)
    at org.eclipse.emf.ecoretools.ale.ide.WorkbenchDsl.convertToFile(WorkbenchDsl.java:66)
    at org.eclipse.emf.ecoretools.ale.ide.WorkbenchDsl.lambda$0(WorkbenchDsl.java:50)
    at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
    at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
    at org.eclipse.emf.ecoretools.ale.ide.WorkbenchDsl.resolveUris(WorkbenchDsl.java:50)
    at org.eclipse.emf.ecoretools.ale.ide.WorkbenchDsl.<init>(WorkbenchDsl.java:33)
    at org.eclipse.gemoc.ale.interpreted.engine.Helper.gemocDslToAleDsl(Helper.java:24)
    at org.eclipse.gemoc.ale.interpreted.engine.ui.SelectMainMethodDialog.update(SelectMainMethodDialog.java:48)
    at org.eclipse.gemoc.ale.interpreted.engine.ui.SelectMainMethodDialog.<init>(SelectMainMethodDialog.java:34)
    at org.eclipse.gemoc.ale.interpreted.engine.ui.launcher.tabs.LaunchConfigurationMainTab$8.widgetSelected(LaunchConfigurationMainTab.java:346)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:249)

Instead, it should raise a proper error message in the eclipse log

Steps to reproduce: get the official example, change the dsl file and introduce a typo in the path for the ale file. in the modeling workbench create a new launch configuration and try to browse the main method for the language