public void closeGrammar(VirtualFile grammarFile) {
String grammarFileName = grammarFile.getPath();
LOG.info("closeGrammar " + grammarFileName + " " + project.getName());
inputPanel.resetStartRuleLabel();
inputPanel.clearErrorConsole();
clearParseTree(); // wipe tree
ANTLRv4PluginController controller = ANTLRv4PluginController.getInstance(project);
PreviewState previewState = controller.getPreviewState(grammarFile);
inputPanel.releaseEditor(previewState);
}
public void ensureStartRuleExists(VirtualFile grammarFile) {
PreviewState previewState =
ANTLRv4PluginController.getInstance(project).getPreviewState(grammarFile);
// if start rule no longer exists, reset display/state.
if (previewState.g != ParsingUtils.BAD_PARSER_GRAMMAR && previewState.startRuleName != null) {
Rule rule = previewState.g.getRule(previewState.startRuleName);
if (rule == null) {
previewState.startRuleName = null;
inputPanel.resetStartRuleLabel();
}
}
}