Moved rules in rules.json

Rulesets may be reordered, or switched around entirely to conform to a set of external ruleset identifiers. For instance, you might have used your own internal ruleset identifiers when you first started using TICS, but in the meantime coding standards have shifted to a commonly used set of identifiers (like, for example, MISRA).

In that case, any violation suppressions in the TICS code would now have to be changed to still ensure that all these violations stay suppressed. As suppressions tend to exist for a reason (eg. a false positive) this is annoying. To that end, TICS can be helped along by providing a rules.json file in the same directory as RULES.txt and IMPL.txt. The contents of this file are as follows:

{
  "MOVEDRULES" : [
    {
      "PREVIOUS_IDS" : ["YourPreviousRuleId"],
      "RULEID"       :  "YourNewRuleId"
    },
    {
      "PREVIOUS_IDS" : ["AnotherPreviousRuleId", "SecondPreviousRuleId"],
      "RULEID"       :  "AnotherNewRuleId"
    }
  ]
}

Do note that the contents of PREVIOUS_IDS are a list, so it is possible to have multiple old rule ID's in there.

This should also still work in the following cases:

• A rule with an obsolete identifier has been split up into multiple new identifiers.
• Multiple obsolete rule identifiers have been merged into a single new identifier.