From 231f92707f512f428b5d87d9c42227de2c32bb88 Mon Sep 17 00:00:00 2001
From: Fedor Isakov <fisakov@gmail.com>
Date: Fri, 3 Nov 2017 12:37:34 +0100
Subject: [PATCH] Drop unused class. Drop unnecessary utility method, replace
 ad-hoc code with valueOf and equals predicate.

---
 .../models/sample.lambdacalc.types.mps        | 991 +-----------------
 1 file changed, 50 insertions(+), 941 deletions(-)

diff --git a/samples/lambdacalc/languages/sample.lambdacalc/models/sample.lambdacalc.types.mps b/samples/lambdacalc/languages/sample.lambdacalc/models/sample.lambdacalc.types.mps
index b8e04b0f..cfdb0818 100644
--- a/samples/lambdacalc/languages/sample.lambdacalc/models/sample.lambdacalc.types.mps
+++ b/samples/lambdacalc/languages/sample.lambdacalc/models/sample.lambdacalc.types.mps
@@ -23,14 +23,10 @@
     <import index="6exd" ref="r:0f9b1fb3-00f9-4480-b235-1a906a087ab2(jetbrains.mps.logic.treeform)" />
     <import index="oy3s" ref="r:a6030cee-34eb-4503-b1bf-015fe5cd8c1a(jetbrains.mps.logic.builtin.unification)" />
     <import index="6pyv" ref="r:e418ad23-36dc-4ed0-b837-26a7fd157da3(jetbrains.mps.lang.typesystem2.program)" />
-    <import index="6bz1" ref="r:d3905048-7598-4a84-931a-cbbcbcda146d(jetbrains.mps.lang.intentions.methods)" implicit="true" />
     <import index="c17a" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.language(MPS.OpenAPI/)" implicit="true" />
   </imports>
   <registry>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
-      <concept id="1219920932475" name="jetbrains.mps.baseLanguage.structure.VariableArityType" flags="in" index="8X2XB">
-        <child id="1219921048460" name="componentType" index="8Xvag" />
-      </concept>
       <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
         <child id="1082485599096" name="statements" index="9aQI4" />
       </concept>
@@ -38,29 +34,18 @@
         <child id="1068498886297" name="rValue" index="37vLTx" />
         <child id="1068498886295" name="lValue" index="37vLTJ" />
       </concept>
-      <concept id="1215695189714" name="jetbrains.mps.baseLanguage.structure.PlusAssignmentExpression" flags="nn" index="d57v9" />
       <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
       <concept id="1465982738277781862" name="jetbrains.mps.baseLanguage.structure.PlaceholderMember" flags="ng" index="2tJIrI" />
       <concept id="1239709250944" name="jetbrains.mps.baseLanguage.structure.PrefixIncrementExpression" flags="nn" index="2$rviw" />
-      <concept id="1076505808687" name="jetbrains.mps.baseLanguage.structure.WhileStatement" flags="nn" index="2$JKZl">
-        <child id="1076505808688" name="condition" index="2$JKZa" />
-      </concept>
       <concept id="1239714755177" name="jetbrains.mps.baseLanguage.structure.AbstractUnaryNumberOperation" flags="nn" index="2$Kvd9">
         <child id="1239714902950" name="expression" index="2$L3a6" />
       </concept>
-      <concept id="1173175405605" name="jetbrains.mps.baseLanguage.structure.ArrayAccessExpression" flags="nn" index="AH0OO">
-        <child id="1173175577737" name="index" index="AHEQo" />
-        <child id="1173175590490" name="array" index="AHHXb" />
-      </concept>
       <concept id="1188207840427" name="jetbrains.mps.baseLanguage.structure.AnnotationInstance" flags="nn" index="2AHcQZ">
         <reference id="1188208074048" name="annotation" index="2AI5Lk" />
       </concept>
       <concept id="1188208481402" name="jetbrains.mps.baseLanguage.structure.HasAnnotation" flags="ng" index="2AJDlI">
         <child id="1188208488637" name="annotation" index="2AJF6D" />
       </concept>
-      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
-        <child id="1154032183016" name="body" index="2LFqv$" />
-      </concept>
       <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
         <child id="1197027771414" name="operand" index="2Oq$k0" />
         <child id="1197027833540" name="operation" index="2OqNvi" />
@@ -96,9 +81,6 @@
       <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
       <concept id="1070534370425" name="jetbrains.mps.baseLanguage.structure.IntegerType" flags="in" index="10Oyi0" />
       <concept id="1070534644030" name="jetbrains.mps.baseLanguage.structure.BooleanType" flags="in" index="10P_77" />
-      <concept id="1070534760951" name="jetbrains.mps.baseLanguage.structure.ArrayType" flags="in" index="10Q1$e">
-        <child id="1070534760952" name="componentType" index="10Q1$1" />
-      </concept>
       <concept id="1070534934090" name="jetbrains.mps.baseLanguage.structure.CastExpression" flags="nn" index="10QFUN">
         <child id="1070534934091" name="type" index="10QFUM" />
         <child id="1070534934092" name="expression" index="10QFUP" />
@@ -129,7 +111,6 @@
       <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
       <concept id="1068498886294" name="jetbrains.mps.baseLanguage.structure.AssignmentExpression" flags="nn" index="37vLTI" />
       <concept id="1225271177708" name="jetbrains.mps.baseLanguage.structure.StringType" flags="in" index="17QB3L" />
-      <concept id="1225271283259" name="jetbrains.mps.baseLanguage.structure.NPEEqualsExpression" flags="nn" index="17R0WA" />
       <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
         <child id="5680397130376446158" name="type" index="1tU5fm" />
       </concept>
@@ -140,9 +121,7 @@
         <child id="1068580123134" name="parameter" index="3clF46" />
         <child id="1068580123135" name="body" index="3clF47" />
       </concept>
-      <concept id="1068580123165" name="jetbrains.mps.baseLanguage.structure.InstanceMethodDeclaration" flags="ig" index="3clFb_">
-        <property id="1178608670077" name="isAbstract" index="1EzhhJ" />
-      </concept>
+      <concept id="1068580123165" name="jetbrains.mps.baseLanguage.structure.InstanceMethodDeclaration" flags="ig" index="3clFb_" />
       <concept id="1068580123152" name="jetbrains.mps.baseLanguage.structure.EqualsExpression" flags="nn" index="3clFbC" />
       <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
         <child id="1068580123156" name="expression" index="3clFbG" />
@@ -177,9 +156,6 @@
       </concept>
       <concept id="1081506762703" name="jetbrains.mps.baseLanguage.structure.GreaterThanExpression" flags="nn" index="3eOSWO" />
       <concept id="1081506773034" name="jetbrains.mps.baseLanguage.structure.LessThanExpression" flags="nn" index="3eOVzh" />
-      <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
-        <child id="1081516765348" name="expression" index="3fr31v" />
-      </concept>
       <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
@@ -199,31 +175,14 @@
         <child id="1081773367579" name="rightExpression" index="3uHU7w" />
         <child id="1081773367580" name="leftExpression" index="3uHU7B" />
       </concept>
-      <concept id="1214918800624" name="jetbrains.mps.baseLanguage.structure.PostfixIncrementExpression" flags="nn" index="3uNrnE" />
-      <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
-      <concept id="1184950988562" name="jetbrains.mps.baseLanguage.structure.ArrayCreator" flags="nn" index="3$_iS1">
-        <child id="1184951007469" name="componentType" index="3$_nBY" />
-        <child id="1184952969026" name="dimensionExpression" index="3$GQph" />
-      </concept>
-      <concept id="1184952934362" name="jetbrains.mps.baseLanguage.structure.DimensionExpression" flags="nn" index="3$GHV9">
-        <child id="1184953288404" name="expression" index="3$I4v7" />
-      </concept>
       <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
-      <concept id="1144230876926" name="jetbrains.mps.baseLanguage.structure.AbstractForStatement" flags="nn" index="1DupvO">
-        <child id="1144230900587" name="variable" index="1Duv9x" />
-      </concept>
-      <concept id="1144231330558" name="jetbrains.mps.baseLanguage.structure.ForStatement" flags="nn" index="1Dw8fO">
-        <child id="1144231399730" name="condition" index="1Dwp0S" />
-        <child id="1144231408325" name="iteration" index="1Dwrff" />
-      </concept>
       <concept id="1163668896201" name="jetbrains.mps.baseLanguage.structure.TernaryOperatorExpression" flags="nn" index="3K4zz7">
         <child id="1163668914799" name="condition" index="3K4Cdx" />
         <child id="1163668922816" name="ifTrue" index="3K4E3e" />
         <child id="1163668934364" name="ifFalse" index="3K4GZi" />
       </concept>
-      <concept id="1208890769693" name="jetbrains.mps.baseLanguage.structure.ArrayLengthOperation" flags="nn" index="1Rwk04" />
       <concept id="6329021646629104957" name="jetbrains.mps.baseLanguage.structure.TextCommentPart" flags="nn" index="3SKdUq">
         <property id="6329021646629104958" name="text" index="3SKdUp" />
       </concept>
@@ -258,11 +217,6 @@
         <child id="6832197706140518123" name="parameter" index="zr_5Q" />
       </concept>
     </language>
-    <language id="c7d5b9dd-a05f-4be2-bc73-f2e16994cc67" name="jetbrains.mps.baseLanguage.lightweightdsl">
-      <concept id="8880393040217246788" name="jetbrains.mps.baseLanguage.lightweightdsl.structure.MethodParameterInstance" flags="ig" index="ffn8J">
-        <reference id="8880393040217294897" name="decl" index="ffrpq" />
-      </concept>
-    </language>
     <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
       <concept id="1196350785110" name="jetbrains.mps.lang.quotation.structure.AbstractAntiquotation" flags="ng" index="2c44t0">
         <property id="6489343236075007666" name="label" index="3hQQBS" />
@@ -298,9 +252,6 @@
       </concept>
     </language>
     <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
-      <concept id="1145404486709" name="jetbrains.mps.lang.smodel.structure.SemanticDowncastExpression" flags="nn" index="2JrnkZ">
-        <child id="1145404616321" name="leftExpression" index="2JrQYb" />
-      </concept>
       <concept id="2644386474300074836" name="jetbrains.mps.lang.smodel.structure.ConceptIdRefExpression" flags="nn" index="35c_gC">
         <reference id="2644386474300074837" name="conceptDeclaration" index="35c_gD" />
       </concept>
@@ -1222,45 +1173,45 @@
           <node concept="17QB3L" id="WBEjvSTpvE" role="3vLBG7" />
         </node>
         <node concept="3I6sU6" id="N6wx6Hp2j6" role="3Ip0Jz">
-          <node concept="3IrJb3" id="WBEjvSTpwc" role="3I6sU7">
-            <node concept="3clFbS" id="WBEjvSTpwe" role="3IrJb0">
-              <node concept="3Aqczg" id="WBEjvSTpwP" role="3cqZAp">
-                <node concept="3wWvb2" id="WBEjvSTpwO" role="3Aqpz8">
-                  <node concept="2YIFZM" id="WBEjvSTpx4" role="3wWo3s">
-                    <ref role="37wK5l" node="WBEjvSTnJK" resolve="formatError" />
-                    <ref role="1Pybhc" node="4dPZ2m2jfZE" resolve="Util" />
-                    <node concept="1nq8_$" id="PoGdiA49Th" role="37wK5m">
-                      <node concept="a7P8L" id="WBEjvSTEK1" role="1nq8_t">
-                        <ref role="a7OzE" node="WBEjvSTpvo" resolve="E" />
-                      </node>
-                    </node>
-                    <node concept="Xl_RD" id="7Y$xuoibWin" role="37wK5m">
-                      <property role="Xl_RC" value="cannot unify '%s' and '%s'" />
-                    </node>
-                    <node concept="1nq8_$" id="PoGdiA49SV" role="37wK5m">
-                      <node concept="a7P8L" id="7Y$xuoibXwn" role="1nq8_t">
+          <node concept="3I6s7M" id="1AtJ$M5eVpJ" role="3I6sU7">
+            <node concept="3GeI9q" id="1AtJ$M5eVpD" role="3I6s78">
+              <node concept="a7P8L" id="1AtJ$M5eVzi" role="3GeI8F">
+                <ref role="a7OzE" node="WBEjvSTpvo" resolve="E" />
+              </node>
+              <node concept="HKQnh" id="1AtJ$M5eVzq" role="3GeI8D">
+                <node concept="2YIFZM" id="1AtJ$M5eVzH" role="HKQng">
+                  <ref role="1Pybhc" to="wyt6:~String" resolve="String" />
+                  <ref role="37wK5l" to="wyt6:~String.format(java.lang.String,java.lang.Object...):java.lang.String" resolve="format" />
+                  <node concept="Xl_RD" id="1AtJ$M5eVzY" role="37wK5m">
+                    <property role="Xl_RC" value="cannot unify '%s' and '%s'" />
+                  </node>
+                  <node concept="1TmgYN" id="1AtJ$M5eVE1" role="37wK5m">
+                    <node concept="1nq8_$" id="1AtJ$M5eVEX" role="1Tms7$">
+                      <node concept="a7P8L" id="1AtJ$M5eVEV" role="1nq8_t">
                         <ref role="a7OzE" node="44a9n8Es2A7" resolve="FA" />
                       </node>
                     </node>
-                    <node concept="1nq8_$" id="PoGdiA49Tn" role="37wK5m">
-                      <node concept="a7P8L" id="7Y$xuoibXEO" role="1nq8_t">
+                  </node>
+                  <node concept="1TmgYN" id="1AtJ$M5eVPW" role="37wK5m">
+                    <node concept="1nq8_$" id="1AtJ$M5eW0n" role="1Tms7$">
+                      <node concept="a7P8L" id="1AtJ$M5eW0l" role="1nq8_t">
                         <ref role="a7OzE" node="44a9n8ErWrT" resolve="A" />
                       </node>
                     </node>
                   </node>
                 </node>
               </node>
-              <node concept="3Aqczg" id="WBEjvSTExb" role="3cqZAp">
-                <node concept="3Aqt3T" id="WBEjvSTEx7" role="3Aqpz8">
-                  <ref role="3AqCNq" node="WBEjvSTpuV" resolve="error" />
-                  <node concept="a7P8L" id="WBEjvSTEBi" role="3AunhB">
-                    <ref role="a7OzE" node="WBEjvSTpvo" resolve="E" />
-                  </node>
-                  <node concept="3BlFb$" id="2mKpIXwPhj3" role="3AunhB">
-                    <node concept="3A2sRY" id="2mKpIXwPhj5" role="3BlFb_">
-                      <ref role="3A2yKK" node="44a9n8ErWrh" resolve="app" />
-                    </node>
-                  </node>
+            </node>
+          </node>
+          <node concept="3I6s7M" id="1AtJ$M5eUjc" role="3I6sU7">
+            <node concept="3Aqt3T" id="WBEjvSTEx7" role="3I6s78">
+              <ref role="3AqCNq" node="WBEjvSTpuV" resolve="error" />
+              <node concept="a7P8L" id="WBEjvSTEBi" role="3AunhB">
+                <ref role="a7OzE" node="WBEjvSTpvo" resolve="E" />
+              </node>
+              <node concept="3BlFb$" id="2mKpIXwPhj3" role="3AunhB">
+                <node concept="3A2sRY" id="2mKpIXwPhj5" role="3BlFb_">
+                  <ref role="3A2yKK" node="44a9n8ErWrh" resolve="app" />
                 </node>
               </node>
             </node>
@@ -1381,35 +1332,27 @@
       </node>
       <node concept="3Aq9E8" id="6_p$mL23rks" role="3otmyu">
         <node concept="3I6sU6" id="6_p$mL23rkt" role="3Ip0Jz">
-          <node concept="3IrJb3" id="6_p$mL23rkS" role="3I6sU7">
-            <node concept="3clFbS" id="6_p$mL23rkT" role="3IrJb0">
-              <node concept="3Aqczg" id="6_p$mL23rkU" role="3cqZAp">
-                <node concept="3wWvb2" id="6_p$mL23rkV" role="3Aqpz8">
-                  <node concept="2YIFZM" id="6_p$mL23rkW" role="3wWo3s">
-                    <ref role="37wK5l" node="WBEjvSTnJK" resolve="formatError" />
-                    <ref role="1Pybhc" node="4dPZ2m2jfZE" resolve="Util" />
-                    <node concept="1nq8_$" id="PoGdiA49Tj" role="37wK5m">
-                      <node concept="a7P8L" id="6_p$mL23rxv" role="1nq8_t">
-                        <ref role="a7OzE" node="6_p$mL23rnG" resolve="E" />
-                      </node>
-                    </node>
-                    <node concept="Xl_RD" id="6_p$mL23rkZ" role="37wK5m">
-                      <property role="Xl_RC" value="mismatched type" />
-                    </node>
-                  </node>
+          <node concept="3I6s7M" id="1AtJ$M5eWle" role="3I6sU7">
+            <node concept="3GeI9q" id="1AtJ$M5eWl8" role="3I6s78">
+              <node concept="a7P8L" id="1AtJ$M5eWoL" role="3GeI8F">
+                <ref role="a7OzE" node="6_p$mL23rnG" resolve="E" />
+              </node>
+              <node concept="HKQnh" id="1AtJ$M5eWoT" role="3GeI8D">
+                <node concept="Xl_RD" id="1AtJ$M5eXoF" role="HKQng">
+                  <property role="Xl_RC" value="mismatched type" />
                 </node>
               </node>
-              <node concept="3Aqczg" id="6_p$mL23rl4" role="3cqZAp">
-                <node concept="3Aqt3T" id="6_p$mL23rl5" role="3Aqpz8">
-                  <ref role="3AqCNq" node="WBEjvSTpuV" resolve="error" />
-                  <node concept="a7P8L" id="6_p$mL23rJF" role="3AunhB">
-                    <ref role="a7OzE" node="6_p$mL23rnG" resolve="E" />
-                  </node>
-                  <node concept="3BlFb$" id="2mKpIXwPhoj" role="3AunhB">
-                    <node concept="3A2sRY" id="2mKpIXwPhvB" role="3BlFb_">
-                      <ref role="3A2yKK" node="6_p$mL23fzC" resolve="ite" />
-                    </node>
-                  </node>
+            </node>
+          </node>
+          <node concept="3I6s7M" id="1AtJ$M5eWe5" role="3I6sU7">
+            <node concept="3Aqt3T" id="6_p$mL23rl5" role="3I6s78">
+              <ref role="3AqCNq" node="WBEjvSTpuV" resolve="error" />
+              <node concept="a7P8L" id="6_p$mL23rJF" role="3AunhB">
+                <ref role="a7OzE" node="6_p$mL23rnG" resolve="E" />
+              </node>
+              <node concept="3BlFb$" id="2mKpIXwPhoj" role="3AunhB">
+                <node concept="3A2sRY" id="2mKpIXwPhvB" role="3BlFb_">
+                  <ref role="3A2yKK" node="6_p$mL23fzC" resolve="ite" />
                 </node>
               </node>
             </node>
@@ -1598,562 +1541,6 @@
       </node>
     </node>
   </node>
-  <node concept="312cEu" id="4rRw8_AtKo0">
-    <property role="TrG5h" value="VarUnionFind" />
-    <node concept="2tJIrI" id="4rRw8_AtKoQ" role="jymVt" />
-    <node concept="2YIFZL" id="4rRw8_AuyeV" role="jymVt">
-      <property role="TrG5h" value="find" />
-      <property role="DiZV1" value="false" />
-      <property role="od$2w" value="false" />
-      <node concept="3clFbS" id="4rRw8_AtKpM" role="3clF47">
-        <node concept="3cpWs8" id="4rRw8_AugfH" role="3cqZAp">
-          <node concept="3cpWsn" id="4rRw8_AugfI" role="3cpWs9">
-            <property role="TrG5h" value="rec" />
-            <node concept="3uibUv" id="4rRw8_AugfE" role="1tU5fm">
-              <ref role="3uigEE" node="4rRw8_AtKsM" resolve="VarUnionFind.Rec" />
-            </node>
-            <node concept="1rXfSq" id="4rRw8_AugfJ" role="33vP2m">
-              <ref role="37wK5l" node="4rRw8_Auzdl" resolve="rec" />
-              <node concept="37vLTw" id="4rRw8_AugfK" role="37wK5m">
-                <ref role="3cqZAo" node="4rRw8_AtKqr" resolve="var" />
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="2$JKZl" id="4rRw8_AugxV" role="3cqZAp">
-          <node concept="3clFbS" id="4rRw8_AugxX" role="2LFqv$">
-            <node concept="3cpWs8" id="4rRw8_AuhZ2" role="3cqZAp">
-              <node concept="3cpWsn" id="4rRw8_AuhZ3" role="3cpWs9">
-                <property role="TrG5h" value="tmp" />
-                <node concept="3uibUv" id="4rRw8_AuhYX" role="1tU5fm">
-                  <ref role="3uigEE" node="4rRw8_AtKsM" resolve="VarUnionFind.Rec" />
-                </node>
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