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TestTypeProviders: extracted in a separate file
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jvm/src/test/scala/io/kaitai/struct/translators/TestTypeProviders.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| package io.kaitai.struct.translators | ||
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| import io.kaitai.struct.datatype.DataType | ||
| import io.kaitai.struct.datatype.DataType.{CalcIntType, CalcStrType, CalcUserType, UserTypeInstream} | ||
| import io.kaitai.struct.exprlang.Ast | ||
| import io.kaitai.struct.format.{ClassSpec, FixedSized, Identifier} | ||
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| /** | ||
| * A few implementations of [[TypeProvider]] for test purposes. | ||
| */ | ||
| object TestTypeProviders { | ||
| /** | ||
| * Common type provider implementation for test purposes. | ||
| */ | ||
| abstract class FakeTypeProvider extends TypeProvider { | ||
| val nowClass = ClassSpec.opaquePlaceholder(List("top_class")) | ||
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| override def resolveEnum(inType: Ast.typeId, enumName: String) = | ||
| throw new NotImplementedError | ||
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| override def resolveType(typeName: Ast.typeId): DataType = { | ||
| if (typeName == Ast.typeId(false, List("block"), false)) { | ||
| val name = List("top_class", "block") | ||
| val r = CalcUserType(name, None, Seq()) | ||
| val cs = ClassSpec.opaquePlaceholder(name) | ||
| cs.seqSize = FixedSized(56) | ||
| r.classSpec = Some(cs) | ||
| return r | ||
| } else { | ||
| throw new NotImplementedError | ||
| } | ||
| } | ||
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| override def isLazy(attrName: String): Boolean = false | ||
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| override def isLazy(inClass: ClassSpec, attrName: String): Boolean = false | ||
| } | ||
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| /** | ||
| * Type provider that always return one data type when question arises. | ||
| * @param t data type to return | ||
| */ | ||
| case class Always(t: DataType) extends FakeTypeProvider { | ||
| override def determineType(name: String): DataType = t | ||
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| override def determineType(id: Identifier): DataType = t | ||
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| override def determineType(inClass: ClassSpec, name: String): DataType = t | ||
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| override def determineType(inClass: ClassSpec, id: Identifier): DataType = t | ||
| } | ||
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| /** | ||
| * Emulates the following system of types: | ||
| * | ||
| * {{{ | ||
| * meta: | ||
| * id: top_class | ||
| * types: | ||
| * block: | ||
| * seq: | ||
| * - id: bar | ||
| * type: str | ||
| * - id: inner | ||
| * type: innerblock | ||
| * types: | ||
| * innerblock: | ||
| * instances: | ||
| * baz: | ||
| * value: 123 | ||
| * }}} | ||
| */ | ||
| case object FooBarProvider extends FakeTypeProvider { | ||
| override def determineType(name: String): DataType = { | ||
| name match { | ||
| case "foo" => userOwnedType(List("top_class", "block")) | ||
| } | ||
| } | ||
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| override def determineType(id: Identifier): DataType = ??? | ||
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| override def determineType(inClass: ClassSpec, name: String): DataType = { | ||
| (inClass.name.last, name) match { | ||
| case ("block", "bar") => CalcStrType | ||
| case ("block", "inner") => userOwnedType(List("top_class", "block", "innerblock")) | ||
| case ("innerblock", "baz") => CalcIntType | ||
| } | ||
| } | ||
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| override def determineType(inClass: ClassSpec, id: Identifier): DataType = ??? | ||
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| override def resolveType(typeName: Ast.typeId): DataType = { | ||
| typeName.names match { | ||
| case Seq("top_class") => | ||
| userOwnedType(List("top_class")) | ||
| case Seq("block") | | ||
| Seq("top_class", "block") => | ||
| userOwnedType(List("top_class", "block")) | ||
| case Seq("innerblock") | | ||
| Seq("block", "innerblock") | | ||
| Seq("top_class", "block", "innerblock") => | ||
| userOwnedType(List("top_class", "block", "innerblock")) | ||
| } | ||
| } | ||
| } | ||
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| def userOwnedType(lname: List[String]): UserTypeInstream = { | ||
| val cs = ClassSpec.opaquePlaceholder(lname) | ||
| val ut = UserTypeInstream(lname, None) | ||
| ut.classSpec = Some(cs) | ||
| ut | ||
| } | ||
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| def userBorrowedType(lname: List[String]): CalcUserType = { | ||
| val cs = ClassSpec.opaquePlaceholder(lname) | ||
| val ut = CalcUserType(lname, None) | ||
| ut.classSpec = Some(cs) | ||
| ut | ||
| } | ||
| } |
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