Drop obsolete interface

reactor/Core/src/jetbrains/mps/logic/reactor/core/RuleIndex.kt

@@ -41,7 +41,7 @@ fun emptyHeadBits() = BitSet()
  *
  * @author Fedor Isakov
  */
-class RuleIndex(rules: Iterable<Rule>, profiler: Profiler? = null) : RuleLookup
+class RuleIndex(rules: Iterable<Rule>, profiler: Profiler? = null)
 {
     private class OrderedRule(var order: Int, val rule: Rule)
 
@@ -64,8 +64,6 @@ class RuleIndex(rules: Iterable<Rule>, profiler: Profiler? = null) : RuleLookup
         }
     }
 
-    override fun lookupRuleByTag(tag: Any): Rule? = tag2rule[tag]
-
     /**
      * Returns instances of [Rule] that can potentially match the specified [ConstraintOccurrence].
      */

reactor/Core/src/jetbrains/mps/logic/reactor/core/RuleLookup.kt

@@ -1,31 +0,0 @@
-/*
- * Copyright 2014-2019 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package jetbrains.mps.logic.reactor.core
-
-import jetbrains.mps.logic.reactor.program.Rule
-
-/**
- * Enables to lookup a rule by the tag, which uniquely identifies the rule.
- *
- * @author Fedor Isakov
- */
-
-interface RuleLookup {
-
-    fun lookupRuleByTag(tag: Any): Rule?
-
-}

reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ReteRuleMatcherImpl.kt

@@ -55,10 +55,6 @@ internal class ReteRuleMatcherImpl(private val rule: Rule) : RuleMatcher
 
     override fun rule() = lookupRule()
 
-//    override fun setRuleLookup(ruleLookup: RuleLookup) { this.ruleLookup = ruleLookup }
-//
-//    override fun resetRuleLookup() { this.ruleLookup = null }
-
     override fun newProbe(): RuleMatchingProbe = ReteNetwork(head.size).also { probe = it }
 
     override fun probe(): RuleMatchingProbe = probe ?: newProbe()

reactor/Test/test/RulesHelper.kt

@@ -12,7 +12,7 @@ import java.util.*
  * @author Fedor Isakov
  */
 
-class Builder(var rulesList: List<Rule>) : RuleLookup {
+class Builder(var rulesList: List<Rule>) {
 
     val tag2rule = LinkedHashMap<Any, Rule>()
 
@@ -26,8 +26,6 @@ class Builder(var rulesList: List<Rule>) : RuleLookup {
     val rules: List<Rule>
         get() = tag2rule.values.toList()
 
-    override fun lookupRuleByTag(tag: Any): Rule? = tag2rule[tag]
-
     fun ruleMatcher(): RuleMatcher = createRuleMatcher(rules.first())
 
     fun program(name: String): Program = programBuilder.program(name, rulesList)