parser: fix integer literals

support/pork-idea/src/main/kotlin/gay/pizza/pork/idea/PorkElementTypes.kt

@@ -46,4 +46,6 @@ object PorkElementTypes {
 
   fun elementTypeFor(nodeType: NodeType): IElementType =
     nodeTypeToElementType[nodeType]!!
+
+  val FailedToParse: IElementType = IElementType("FailedToParse", PorkLanguage)
 }

support/pork-idea/src/main/kotlin/gay/pizza/pork/idea/PorkParser.kt

@@ -17,5 +17,7 @@ class PorkParser : PsiParser {
     return builder.treeBuilt
   }
 
-  class ExitParser(val error: String) : RuntimeException("Exit Parser: $error")
+  class ExitParser(val error: String? = null) : RuntimeException(
+    if (error == null) "Fast Exit" else "Exit Parser: $error"
+  )
 }

support/pork-idea/src/main/kotlin/gay/pizza/pork/idea/PsiBuilderMarkAttribution.kt

@@ -17,16 +17,20 @@ class PsiBuilderMarkAttribution(val builder: PsiBuilder) : ParserNodeAttribution
       while (!builder.eof()) {
         builder.advanceLexer()
       }
-      throw PorkParser.ExitParser(e.error)
+      throw PorkParser.ExitParser()
     } catch (e: ParseError) {
+      marker.error(e.error)
       while (!builder.eof()) {
         builder.advanceLexer()
       }
-      marker.error(e.error)
-      throw PorkParser.ExitParser(e.error)
+      throw PorkParser.ExitParser()
     } catch (e: PorkParser.ExitParser) {
-      marker.error(e.error)
-      throw e
+      if (e.error != null) {
+        marker.error(e.error)
+      } else {
+        marker.done(PorkElementTypes.FailedToParse)
+      }
+      throw PorkParser.ExitParser()
     }
   }
 }