static GazelleEvalContext dm_gazelle_stdEvalContext() {
  ret dm_gazelle_stdEvalContext(dm_allRulesFromRulesModuleWithCommentsAndIDs());
}

static GazelleEvalContext dm_gazelle_stdEvalContext(L<T3<S>> rules) {
  new GazelleEvalContext ctx;
  ctx.engine = new RuleEngine2;
  ctx.engine.addRules2(rules);
  ctx.engine.callFunctionOnString = func(S function, S s) -> O { dm_callFunctionOnString(function, s) };
  
  // gather data for predictor
  MultiMap<S> statementsByRule = ai_gazelle_indexStatementsByRule(dm_gazelle_statementsFromAppliedRules());
  ctx.dataByRule = mapValues ai_gazelle_analyzeStatementsForRule(multiMapToMap(statementsByRule));
  ret ctx;
}