The stack environment an AST node denotes directly: a .GlobalEnv/.BaseEnv symbol, a globalenv()/baseenv()/emptyenv() call, the current env via environment(), the parent via parent.env(e), or a named search-path entry via as.environment("package:x").
node
.GlobalEnv
.BaseEnv
globalenv()
baseenv()
emptyenv()
environment()
parent.env(e)
as.environment("package:x")
The stack environment an AST
nodedenotes directly: a.GlobalEnv/.BaseEnvsymbol, aglobalenv()/baseenv()/emptyenv()call, the current env viaenvironment(), the parent viaparent.env(e), or a named search-path entry viaas.environment("package:x").