o-deps.proto-purs_2.11.2.1.3.io.github.zero-deps.proto_2.12.2.1.3.source-code.Common.scala Maven / Gradle / Ivy
package proto
import com.google.protobuf.{CodedOutputStream, CodedInputStream}
import scala.reflect.macros.blackbox.Context
trait Common {
val c: Context
import c.universe._
import definitions._
def error[A](msg: String): A = c.abort(c.enclosingPosition, msg)
def evalTyped[A](expr: c.Expr[A]) = c.eval(c.Expr[A](c.untypecheck(expr.tree.duplicate)))
private[proto] case class FieldInfo(name: TermName, sizeName: TermName, prepareName: TermName, readName: TermName, getter: c.Tree, tpe: c.Type, num: Int, defaultValue: Option[c.Tree], nonPacked: Boolean = false)
val PrepareType: c.Type = typeOf[Prepare]
val CodedOutputStreamType: c.Type = typeOf[CodedOutputStream]
val CodedInputStreamType: c.Type = typeOf[CodedInputStream]
val ArrayByteType: c.Type = typeOf[Array[Byte]]
val BytesType: c.Type = typeOf[Bytes]
val NType: c.Type = c.typeOf[N]
val RestrictedNType: c.Type = c.typeOf[RestrictedN]
val ItetableType: c.Type = typeOf[scala.collection.Iterable[Unit]]
val ArrayType: c.Type = typeOf[Array[_]]
def messageCodecFor(t: c.Type): c.Type = appliedType(typeOf[MessageCodec[Unit]].typeConstructor, t)
def builder(t1: c.Type, t2: c.Type): c.Type = appliedType(typeOf[scala.collection.mutable.Builder[Unit, Unit]].typeConstructor, t1, t2)
val commonTypes: List[c.Type] =
StringClass.selfType :: IntClass.selfType :: LongClass.selfType :: BooleanClass.selfType :: DoubleClass.selfType :: FloatClass.selfType :: ArrayByteType :: Nil
val packedTypes: List[c.Type] =
IntClass.selfType :: LongClass.selfType :: BooleanClass.selfType :: DoubleClass.selfType :: FloatClass.selfType :: Nil
implicit class TypeOps (t: c.Type) {
def isOption: Boolean = t.typeConstructor =:= OptionClass.selfType.typeConstructor
def isTrait: Boolean = t.typeSymbol.isClass && t.typeSymbol.asClass.isTrait && t.typeSymbol.asClass.isSealed
def isCaseClass: Boolean = t.typeSymbol.isClass && t.typeSymbol.asClass.isCaseClass
def constructorParams: List[TermSymbol] = t.typeSymbol.asClass.primaryConstructor.asMethod.paramLists.flatten.map(_.asTerm)
def typeArgsToReplace: List[(c.Type, c.Type)] = t.typeSymbol.asClass.primaryConstructor.owner.asClass.typeParams.map(_.asType.toType).zip(t.typeArgs)
def knownDirectSubclasses: List[c.Type] = t.typeSymbol.asClass.knownDirectSubclasses.toList.map(_.asType.toType)//.filter(isCaseClass)
def knownFinalSubclasses: List[c.Type] = t.knownDirectSubclasses.flatMap{
case t if t.isTrait => t.knownDirectSubclasses
case t => List(t)
}
def isCommonType: Boolean = commonTypes.exists(_ =:= t)
def isPackedType: Boolean = packedTypes.exists(_ =:= t)
def isIterable: Boolean = t.baseClasses.exists(_.asType.toType.typeConstructor <:< ItetableType.typeConstructor)
def iterableArgument: c.Type = if (t.isIterable) t.baseType(ItetableType.typeSymbol).typeArgs(0) else error(s"It isn't Iterable (argument) type: $t")
def isArray: Boolean = t.baseClasses.exists(_.asType.toType.typeConstructor <:< ArrayType.typeConstructor) && !(t =:= ArrayByteType)
def arrayArgument: c.Type = if (t.isArray) t.baseType(ArrayType.typeSymbol).typeArgs(0) else error(s"It isn't Array (argument) type: $t")
def isRepeated: Boolean = t.isIterable || t.isArray
def repeatedArgument: c.Type =
if (t.isIterable) t.iterableArgument
else if (t.isArray) t.arrayArgument
else error(s"It isn't repated type: $t")
}
object common {
def tag(field: FieldInfo): Int =
if (field.nonPacked && field.tpe.isRepeated && field.tpe.repeatedArgument.isCommonType)
field.num << 3 | wireType(field.tpe.repeatedArgument)
else field.num << 3 | wireType(field.tpe)
def wireType(t: c.Type): Int =
if ( t =:= IntClass.selfType
|| t =:= LongClass.selfType
|| t =:= BooleanClass.selfType
) {
0
} else if (t =:= DoubleClass.selfType) {
1
} else if (t =:= FloatClass.selfType) {
5
} else if (t.typeConstructor =:= OptionClass.selfType.typeConstructor) {
val tpe1 = t.typeArgs(0)
wireType(tpe1)
} else if ( t =:= StringClass.selfType
|| t =:= ArrayByteType
|| t =:= BytesType
|| t.isCaseClass
|| t.isTrait
|| t.isRepeated
) {
2
} else {
//todo; add condition case for generics
2
} //else { c.error(c.enclosingPosition, s"no wiretype for ${t}") }
def sizeFun(field: FieldInfo): Option[c.Tree] =
if (field.tpe =:= IntClass.selfType) {
Some(q"${CodedOutputStreamType.typeSymbol.companion}.computeInt32SizeNoTag(${field.getter})")
} else if (field.tpe =:= LongClass.selfType) {
Some(q"${CodedOutputStreamType.typeSymbol.companion}.computeInt64SizeNoTag(${field.getter})")
} else if (field.tpe =:= BooleanClass.selfType) {
Some(q"1")
} else if (field.tpe =:= DoubleClass.selfType) {
Some(q"8")
} else if (field.tpe =:= FloatClass.selfType) {
Some(q"4")
} else if (field.tpe =:= StringClass.selfType) {
Some(q"${CodedOutputStreamType.typeSymbol.companion}.computeStringSizeNoTag(${field.getter})")
} else if (field.tpe =:= ArrayByteType) {
Some(q"${CodedOutputStreamType.typeSymbol.companion}.computeByteArraySizeNoTag(${field.getter})")
} else if (field.tpe =:= BytesType) {
Some(q"${CodedOutputStreamType.typeSymbol.companion}.computeByteArraySizeNoTag(${field.getter}.unsafeArray)")
} else {
None
}
def writeFun(field: FieldInfo, os: TermName): Option[c.Tree] =
if (field.tpe =:= IntClass.selfType) {
Some(q"${os}.writeInt32NoTag(${field.getter})")
} else if (field.tpe =:= LongClass.selfType) {
Some(q"${os}.writeInt64NoTag(${field.getter})")
} else if (field.tpe =:= BooleanClass.selfType) {
Some(q"${os}.writeBoolNoTag(${field.getter})")
} else if (field.tpe =:= DoubleClass.selfType) {
Some(q"${os}.writeDoubleNoTag(${field.getter})")
} else if (field.tpe =:= FloatClass.selfType) {
Some(q"${os}.writeFloatNoTag(${field.getter})")
} else if (field.tpe =:= StringClass.selfType) {
Some(q"${os}.writeStringNoTag(${field.getter})")
} else if (field.tpe =:= ArrayByteType) {
Some(q"${os}.writeByteArrayNoTag(${field.getter})")
} else if (field.tpe =:= BytesType) {
Some(q"${os}.writeByteArrayNoTag(${field.getter}.unsafeArray)")
} else {
None
}
def readFun(field: FieldInfo, is: TermName): Option[c.Tree] =
if (field.tpe =:= IntClass.selfType) {
Some(q"${is}.readInt32")
} else if (field.tpe =:= LongClass.selfType) {
Some(q"${is}.readInt64")
} else if (field.tpe =:= BooleanClass.selfType) {
Some(q"${is}.readBool")
} else if (field.tpe =:= DoubleClass.selfType) {
Some(q"${is}.readDouble")
} else if (field.tpe =:= FloatClass.selfType) {
Some(q"${is}.readFloat")
} else if (field.tpe =:= StringClass.selfType) {
Some(q"${is}.readString")
} else if (field.tpe =:= ArrayByteType) {
Some(q"${is}.readByteArray")
} else if (field.tpe =:= BytesType) {
Some(q"${BytesType.typeSymbol.companion}.unsafeWrap(${is}.readByteArray)")
} else {
None
}
}
}