Tags.scala

/*                     __                                               *\
**     ________ ___   / /  ___      __ ____  Scala.js IR                **
**    / __/ __// _ | / /  / _ | __ / // __/  (c) 2014, LAMP/EPFL        **
**  __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \    http://scala-js.org/       **
** /____/\___/_/ |_/____/_/ | |__/ /____/                               **
**                          |/____/                                     **
\*                                                                      */


package org.scalajs.core.ir

/** Serialization and hashing tags for trees and types */
private[ir] object Tags {

  // Tags for Trees

  /** Use to denote optional trees. */
  final val TagEmptyTree = 1

  final val TagVarDef = TagEmptyTree + 1

  final val TagSkip = TagVarDef + 1
  final val TagBlock = TagSkip + 1
  final val TagLabeled = TagBlock + 1
  final val TagAssign = TagLabeled + 1
  final val TagReturn = TagAssign + 1
  final val TagIf = TagReturn + 1
  final val TagWhile = TagIf + 1
  final val TagDoWhile = TagWhile + 1
  final val TagTryCatch = TagDoWhile + 1
  final val TagTryFinally = TagTryCatch + 1
  final val TagThrow = TagTryFinally + 1
  final val TagContinue = TagThrow + 1
  final val TagMatch = TagContinue + 1
  final val TagDebugger = TagMatch + 1

  final val TagNew = TagDebugger + 1
  final val TagLoadModule = TagNew + 1
  final val TagStoreModule = TagLoadModule + 1
  final val TagSelect = TagStoreModule + 1
  final val TagSelectStatic = TagSelect + 1
  final val TagApply = TagSelectStatic + 1
  final val TagApplyStatically = TagApply + 1
  final val TagApplyStatic = TagApplyStatically + 1
  final val TagUnaryOp = TagApplyStatic + 1
  final val TagBinaryOp = TagUnaryOp + 1
  final val TagNewArray = TagBinaryOp + 1
  final val TagArrayValue = TagNewArray + 1
  final val TagArrayLength = TagArrayValue + 1
  final val TagArraySelect = TagArrayLength + 1
  final val TagRecordValue = TagArraySelect + 1
  final val TagIsInstanceOf = TagRecordValue + 1
  final val TagAsInstanceOf = TagIsInstanceOf + 1
  final val TagUnbox = TagAsInstanceOf + 1
  final val TagGetClass = TagUnbox + 1
  final val TagCallHelper = TagGetClass + 1

  final val TagJSNew = TagCallHelper + 1
  final val TagJSDotSelect = TagJSNew + 1
  final val TagJSBracketSelect = TagJSDotSelect + 1
  final val TagJSFunctionApply = TagJSBracketSelect + 1
  final val TagJSDotMethodApply = TagJSFunctionApply + 1
  final val TagJSBracketMethodApply = TagJSDotMethodApply + 1
  final val TagJSSuperBracketSelect = TagJSBracketMethodApply + 1
  final val TagJSSuperBracketCall = TagJSSuperBracketSelect + 1
  final val TagJSSuperConstructorCall = TagJSSuperBracketCall + 1
  final val TagLoadJSConstructor = TagJSSuperConstructorCall + 1
  final val TagLoadJSModule = TagLoadJSConstructor + 1
  final val TagJSSpread = TagLoadJSModule + 1
  final val TagJSDelete = TagJSSpread + 1
  final val TagJSUnaryOp = TagJSDelete + 1
  final val TagJSBinaryOp = TagJSUnaryOp + 1
  final val TagJSArrayConstr = TagJSBinaryOp + 1
  final val TagJSObjectConstr = TagJSArrayConstr + 1
  final val TagJSGlobalRef = TagJSObjectConstr + 1
  final val TagJSLinkingInfo = TagJSGlobalRef + 1

  final val TagUndefined = TagJSLinkingInfo + 1
  final val TagNull = TagUndefined + 1
  final val TagBooleanLiteral = TagNull + 1
  final val TagCharLiteral = TagBooleanLiteral + 1
  final val TagByteLiteral = TagCharLiteral + 1
  final val TagShortLiteral = TagByteLiteral + 1
  final val TagIntLiteral = TagShortLiteral + 1
  final val TagLongLiteral = TagIntLiteral + 1
  final val TagFloatLiteral = TagLongLiteral + 1
  final val TagDoubleLiteral = TagFloatLiteral + 1
  final val TagStringLiteral = TagDoubleLiteral + 1
  final val TagClassOf = TagStringLiteral + 1

  final val TagVarRef = TagClassOf + 1
  final val TagThis = TagVarRef + 1
  final val TagClosure = TagThis + 1

  // Tags for member defs

  final val TagFieldDef = 1
  final val TagMethodDef = TagFieldDef + 1
  final val TagPropertyDef = TagMethodDef + 1

  // Tags for top-level export defs

  final val TagTopLevelConstructorExportDef = 1
  final val TagTopLevelJSClassExportDef = TagTopLevelConstructorExportDef + 1
  final val TagTopLevelModuleExportDef = TagTopLevelJSClassExportDef + 1
  final val TagTopLevelMethodExportDef = TagTopLevelModuleExportDef + 1
  final val TagTopLevelFieldExportDef = TagTopLevelMethodExportDef + 1

  // Tags for Types

  final val TagAnyType = 1
  final val TagNothingType = TagAnyType + 1
  final val TagUndefType = TagNothingType + 1
  final val TagBooleanType = TagUndefType + 1
  final val TagCharType = TagBooleanType + 1
  final val TagByteType = TagCharType + 1
  final val TagShortType = TagByteType + 1
  final val TagIntType = TagShortType + 1
  final val TagLongType = TagIntType + 1
  final val TagFloatType = TagLongType + 1
  final val TagDoubleType = TagFloatType + 1
  final val TagStringType = TagDoubleType + 1
  final val TagNullType = TagStringType + 1
  final val TagClassType = TagNullType + 1
  final val TagArrayType = TagClassType + 1
  final val TagRecordType = TagArrayType + 1
  final val TagNoType = TagRecordType + 1

  // Tags for TypeRefs

  final val TagClassRef = 1
  final val TagArrayTypeRef = TagClassRef + 1

  // Tags for PropertyNames

  final val TagPropertyNameIdent = 1
  final val TagPropertyNameStringLiteral = TagPropertyNameIdent + 1
  final val TagPropertyNameComputedName = TagPropertyNameStringLiteral + 1

  // Tags for JS native loading specs

  final val TagJSNativeLoadSpecNone = 0
  final val TagJSNativeLoadSpecGlobal = TagJSNativeLoadSpecNone + 1
  final val TagJSNativeLoadSpecImport = TagJSNativeLoadSpecGlobal + 1
  final val TagJSNativeLoadSpecImportWithGlobalFallback = TagJSNativeLoadSpecImport + 1

}