package Ġcom . gab ri elle eg 1 . pl ank . compiler . instructions Ċ Ċ import Ġarrow . core . Either Ċ import Ġcom . gab ri elle eg 1 . pl ank . compiler . Compiler Context Ċ import Ġorg . llvm 4 j . llvm 4 j . Value Ċ Ċ type alias ĠCode gen Result Ġ= ĠEither < Code gen Error , ĠValue > Ċ Ċ abstract Ġclass ĠCompiler Instruction Ġinternal Ġconstructor () Ġ{ ĊĠ Ġabstract Ġfun ĠCompiler Context . codegen (): ĠCode gen Result Ċ } Ċ