| 28 | |
| 29 | export class AnyHelper { |
| 30 | static detectSerializer(readContext: ReadContext) { |
| 31 | const reader = readContext.reader; |
| 32 | const typeResolver = readContext.typeResolver; |
| 33 | const typeId = reader.readUint8(); |
| 34 | let userTypeId = -1; |
| 35 | if (TypeId.needsUserTypeId(typeId) && typeId !== TypeId.COMPATIBLE_STRUCT) { |
| 36 | userTypeId = reader.readVarUint32Small7(); |
| 37 | } |
| 38 | let serializer: Serializer | undefined; |
| 39 | |
| 40 | function buildNamedTypeKey(ns: string, typeName: string) { |
| 41 | return `${ns}$${typeName}`; |
| 42 | } |
| 43 | |
| 44 | function tryUpdateSerializer(serializer: Serializer | undefined | null, typeMeta: TypeMeta) { |
| 45 | if (!serializer) { |
| 46 | return readContext.genSerializerByTypeMetaRuntime(typeMeta); |
| 47 | } |
| 48 | const hash = serializer.getHash(); |
| 49 | if (hash !== typeMeta.getHash()) { |
| 50 | return readContext.genSerializerByTypeMetaRuntime(typeMeta, serializer); |
| 51 | } |
| 52 | return serializer; |
| 53 | } |
| 54 | |
| 55 | switch (typeId) { |
| 56 | case TypeId.COMPATIBLE_STRUCT: |
| 57 | { |
| 58 | const typeMeta = readContext.readTypeMeta(); |
| 59 | serializer = typeResolver.getSerializerById(typeId, typeMeta.getUserTypeId()); |
| 60 | serializer = tryUpdateSerializer(serializer, typeMeta); |
| 61 | } |
| 62 | break; |
| 63 | case TypeId.NAMED_ENUM: |
| 64 | case TypeId.NAMED_UNION: |
| 65 | if (readContext.isCompatible()) { |
| 66 | const typeMeta = readContext.readTypeMeta(); |
| 67 | const ns = typeMeta.getNs(); |
| 68 | const typeName = typeMeta.getTypeName(); |
| 69 | serializer = typeResolver.getSerializerByName(buildNamedTypeKey(ns, typeName)); |
| 70 | } else { |
| 71 | const ns = readContext.readNamespace(); |
| 72 | const typeName = readContext.readTypeName(); |
| 73 | serializer = typeResolver.getSerializerByName(buildNamedTypeKey(ns, typeName)); |
| 74 | } |
| 75 | break; |
| 76 | case TypeId.NAMED_EXT: |
| 77 | if (readContext.isCompatible()) { |
| 78 | const typeMeta = readContext.readTypeMeta(); |
| 79 | const ns = typeMeta.getNs(); |
| 80 | const typeName = typeMeta.getTypeName(); |
| 81 | serializer = typeResolver.getSerializerByName(buildNamedTypeKey(ns, typeName)); |
| 82 | } else { |
| 83 | const ns = readContext.readNamespace(); |
| 84 | const typeName = readContext.readTypeName(); |
| 85 | serializer = typeResolver.getSerializerByName(buildNamedTypeKey(ns, typeName)); |
| 86 | } |
| 87 | break; |