Catch all unexpected errors from token parser. (ergoplatform#247)

Author: oskin1

build.sbt

@@ -2,7 +2,7 @@ lazy val commonSettings = Seq(
   scalacOptions ++= commonScalacOptions,
   scalaVersion := "2.12.15",
   organization := "org.ergoplatform",
-  version := "9.17.3",
+  version := "9.17.4",
   resolvers += Resolver.sonatypeRepo("public"),
   resolvers += Resolver.sonatypeRepo("snapshots"),
   libraryDependencies ++= dependencies.Testing ++ dependencies.CompilerPlugins,

modules/explorer-core/src/main/scala/org/ergoplatform/explorer/protocol/TokenPropsParser.scala

@@ -23,7 +23,7 @@ object TokenPropsParser {
     new TokenPropsParser[TokenPropsEip4] {
       private val p = RegistersParser[Either[Throwable, *]]
 
-      def parse(registers: Map[RegisterId, HexString]): Option[TokenPropsEip4] = {
+      def parse(registers: Map[RegisterId, HexString]): Option[TokenPropsEip4] = Try {
         def parse(raw: HexString) = p.parse[SCollection[SByte.type]](raw).toOption
         val r4                    = registers.get(RegisterId.R4)
         val r5                    = registers.get(RegisterId.R5)
@@ -39,7 +39,7 @@ object TokenPropsParser {
           val (description, decimals) = (descriptionOpt.getOrElse(""), decimalsOpt.getOrElse(0))
           TokenPropsEip4(name, description, decimals)
         }
-      }
+      }.toOption.flatten
     }
 
   private def looksLikeUTF8(utf8: Array[Byte]): Boolean = {