ctxt_stack() can be tricky to use in real code because all
intervening frames are returned with the stack, including those at
ctxt_stack() own call site. stack_trim() makes it easy to
remove layers of intervening calls.
stack_trim(stack, n = 1)
Arguments
| stack | An evaluation stack. |
|---|---|
| n | The number of call frames (not eval frames) to trim off the top of the stack. In other words, the number of layers of intervening frames to trim. |
Life cycle
These functions are soft-deprecated and replaced by trace_back().
Examples
#> [[1]] #> <frame 39> (37) #> expr: identity(ctxt_stack()) #> env: [local 0x463fe00] #> #> [[2]] #> <frame 38> (37) #> expr: identity(identity(ctxt_stack())) #> env: [local 0x463fc40] #> #> [[3]] #> <frame 37> (36) #> expr: eval(expr, envir, enclos) #> env: [local 0x47270b8] #> #> [[4]] #> <frame 36> (26) #> expr: eval(expr, envir, enclos) #> env: [local 0x463fa48] #> #> [[5]] #> <frame 35> (26) #> expr: withVisible(eval(expr, envir, enclos)) #> env: [local 0x463f770] #> #> [[6]] #> <frame 34> (26) #> expr: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, <...> #> env: [local 0x4642ed8] #> #> [[7]] #> <frame 33> (32) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [local 0x46427d8] #> #> [[8]] #> <frame 32> (31) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [local 0x4642490] #> #> [[9]] #> <frame 31> (30) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [local 0x4641ff8] #> #> [[10]] #> <frame 30> (29) #> expr: tryCatch(expr, error = function(e) { <...> #> env: [local 0x4643af0] #> #> [[11]] #> <frame 29> (28) #> expr: try(f, silent = TRUE) #> env: [local 0x4643888] #> #> [[12]] #> <frame 28> (26) #> expr: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, <...> #> env: [local 0x4648e68] #> #> [[13]] #> <frame 27> (26) #> expr: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, <...> #> env: [local 0x4648b58] #> #> [[14]] #> <frame 26> (25) #> expr: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, <...> #> env: [frame 0x46a5198] #> #> [[15]] #> <frame 25> (22) #> expr: evaluate::evaluate(code, env, new_device = TRUE) #> env: [frame 0x4a28220] #> #> [[16]] #> <frame 24> (23) #> expr: force(code) #> env: [frame 0x4a29f80] #> #> [[17]] #> <frame 23> (22) #> expr: withr::with_options(list(crayon.enabled = getOption("crayon.enabled", <...> #> env: [frame 0x4a323a8] #> #> [[18]] #> <frame 22> (21) #> expr: .f(code = .l[[c(1L, 1L)]], run = .l[[c(2L, 1L)]], show = .l[[c(3L, <...> #> env: [frame 0x4a359d0] #> #> [[19]] #> <frame 21> (20) #> expr: purrr::pmap_chr(list(code = code, run = run, show = show), format_example_chunk, <...> #> env: [frame 0x4a41260] #> #> [[20]] #> <frame 20> (18) #> expr: as_data.tag_examples(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4ca58] #> #> [[21]] #> <frame 19> (18) #> expr: as_data(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4bfd8] #> #> [[22]] #> <frame 18> (17) #> expr: data_reference_topic(topic, pkg, examples = examples, run_dont_run = run_dont_run) #> env: [frame 0x56aea98] #> #> [[23]] #> <frame 17> (16) #> expr: .f(.x[[i]], ...) #> env: [frame 0x57ec5e8] #> #> [[24]] #> <frame 16> (15) #> expr: purrr::map(topics, build_reference_topic, pkg = pkg, lazy = lazy, <...> #> env: [frame 0x58c61d0] #> #> [[25]] #> <frame 15> (14) #> expr: build_reference(pkg, lazy = lazy, document = document, examples = examples, <...> #> env: [frame 0x17c9338] #> #> [[26]] #> <frame 14> (13) #> expr: build_site_local(pkg = pkg, examples = examples, document = document, <...> #> env: [frame 0x2001c88] #> #> [[27]] #> <frame 13> (12) #> expr: pkgdown::build_site(...) #> env: [frame 0x20896e8] #> #> [[28]] #> <frame 12> (0) #> expr: (function (..., crayon_enabled, crayon_colors, pkgdown_internet) <...> #> env: [frame 0x2d518e0] #> #> [[29]] #> <frame 11> (0) #> expr: (function (what, args, quote = FALSE, envir = parent.frame()) <...> #> env: [frame 0x2d4ea70] #> #> [[30]] #> <frame 10> (0) #> expr: do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4a990] #> #> [[31]] #> <frame 9> (0) #> expr: saveRDS(do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4b720] #> #> [[32]] #> <frame 8> (0) #> expr: withCallingHandlers({ <...> #> env: [frame 0x2d4a328] #> #> [[33]] #> <frame 7> (6) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d476b0] #> #> [[34]] #> <frame 6> (5) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [frame 0x2d479f8] #> #> [[35]] #> <frame 5> (2) #> expr: tryCatchList(expr, names[-nh], parentenv, handlers[-nh]) #> env: [frame 0x2d47db0] #> #> [[36]] #> <frame 4> (3) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d48360] #> #> [[37]] #> <frame 3> (2) #> expr: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]), <...> #> env: [frame 0x2d486a8] #> #> [[38]] #> <frame 2> (1) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [frame 0x2d44bc0] #> #> [[39]] #> <frame 1> (0) #> expr: tryCatch(withCallingHandlers({ <...> #> env: [frame 0x2d45330] #> #> [[40]] #> <frame 0> [global] #> expr: NULL #> env: [global] #> #> attr(,"class") #> [1] "ctxt_stack" "stack"#> Warning: `stack_trim()` is soft-deprecated as of rlang 0.3.0. #> This warning is displayed once per session.#> [[1]] #> <frame 37> (36) #> expr: eval(expr, envir, enclos) #> env: [local 0x47270b8] #> #> [[2]] #> <frame 36> (26) #> expr: eval(expr, envir, enclos) #> env: [local 0x19d0a00] #> #> [[3]] #> <frame 35> (26) #> expr: withVisible(eval(expr, envir, enclos)) #> env: [local 0x19d4d40] #> #> [[4]] #> <frame 34> (26) #> expr: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, <...> #> env: [local 0x19d3ed0] #> #> [[5]] #> <frame 33> (32) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [local 0x19d31b0] #> #> [[6]] #> <frame 32> (31) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [local 0x19d7350] #> #> [[7]] #> <frame 31> (30) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [local 0x19d69e8] #> #> [[8]] #> <frame 30> (29) #> expr: tryCatch(expr, error = function(e) { <...> #> env: [local 0x19da9a8] #> #> [[9]] #> <frame 29> (28) #> expr: try(f, silent = TRUE) #> env: [local 0x19da740] #> #> [[10]] #> <frame 28> (26) #> expr: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, <...> #> env: [local 0x19da430] #> #> [[11]] #> <frame 27> (26) #> expr: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, <...> #> env: [local 0x19da350] #> #> [[12]] #> <frame 26> (25) #> expr: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, <...> #> env: [frame 0x1ad5a28] #> #> [[13]] #> <frame 25> (22) #> expr: evaluate::evaluate(code, env, new_device = TRUE) #> env: [frame 0x4a28220] #> #> [[14]] #> <frame 24> (23) #> expr: force(code) #> env: [frame 0x4a29f80] #> #> [[15]] #> <frame 23> (22) #> expr: withr::with_options(list(crayon.enabled = getOption("crayon.enabled", <...> #> env: [frame 0x4a323a8] #> #> [[16]] #> <frame 22> (21) #> expr: .f(code = .l[[c(1L, 1L)]], run = .l[[c(2L, 1L)]], show = .l[[c(3L, <...> #> env: [frame 0x4a359d0] #> #> [[17]] #> <frame 21> (20) #> expr: purrr::pmap_chr(list(code = code, run = run, show = show), format_example_chunk, <...> #> env: [frame 0x4a41260] #> #> [[18]] #> <frame 20> (18) #> expr: as_data.tag_examples(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4ca58] #> #> [[19]] #> <frame 19> (18) #> expr: as_data(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4bfd8] #> #> [[20]] #> <frame 18> (17) #> expr: data_reference_topic(topic, pkg, examples = examples, run_dont_run = run_dont_run) #> env: [frame 0x56aea98] #> #> [[21]] #> <frame 17> (16) #> expr: .f(.x[[i]], ...) #> env: [frame 0x57ec5e8] #> #> [[22]] #> <frame 16> (15) #> expr: purrr::map(topics, build_reference_topic, pkg = pkg, lazy = lazy, <...> #> env: [frame 0x58c61d0] #> #> [[23]] #> <frame 15> (14) #> expr: build_reference(pkg, lazy = lazy, document = document, examples = examples, <...> #> env: [frame 0x17c9338] #> #> [[24]] #> <frame 14> (13) #> expr: build_site_local(pkg = pkg, examples = examples, document = document, <...> #> env: [frame 0x2001c88] #> #> [[25]] #> <frame 13> (12) #> expr: pkgdown::build_site(...) #> env: [frame 0x20896e8] #> #> [[26]] #> <frame 12> (0) #> expr: (function (..., crayon_enabled, crayon_colors, pkgdown_internet) <...> #> env: [frame 0x2d518e0] #> #> [[27]] #> <frame 11> (0) #> expr: (function (what, args, quote = FALSE, envir = parent.frame()) <...> #> env: [frame 0x2d4ea70] #> #> [[28]] #> <frame 10> (0) #> expr: do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4a990] #> #> [[29]] #> <frame 9> (0) #> expr: saveRDS(do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4b720] #> #> [[30]] #> <frame 8> (0) #> expr: withCallingHandlers({ <...> #> env: [frame 0x2d4a328] #> #> [[31]] #> <frame 7> (6) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d476b0] #> #> [[32]] #> <frame 6> (5) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [frame 0x2d479f8] #> #> [[33]] #> <frame 5> (2) #> expr: tryCatchList(expr, names[-nh], parentenv, handlers[-nh]) #> env: [frame 0x2d47db0] #> #> [[34]] #> <frame 4> (3) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d48360] #> #> [[35]] #> <frame 3> (2) #> expr: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]), <...> #> env: [frame 0x2d486a8] #> #> [[36]] #> <frame 2> (1) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [frame 0x2d44bc0] #> #> [[37]] #> <frame 1> (0) #> expr: tryCatch(withCallingHandlers({ <...> #> env: [frame 0x2d45330] #> #> [[38]] #> <frame 0> [global] #> expr: NULL #> env: [global] #> #> attr(,"class") #> [1] "ctxt_stack" "stack"# Note that it also takes care of calls intervening at its own call # site: identity(identity( stack_trim(identity(identity(ctxt_stack()))) ))#> [[1]] #> <frame 37> (36) #> expr: eval(expr, envir, enclos) #> env: [local 0x47270b8] #> #> [[2]] #> <frame 36> (26) #> expr: eval(expr, envir, enclos) #> env: [local 0x77216a0] #> #> [[3]] #> <frame 35> (26) #> expr: withVisible(eval(expr, envir, enclos)) #> env: [local 0x77218d0] #> #> [[4]] #> <frame 34> (26) #> expr: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, <...> #> env: [local 0x7721e80] #> #> [[5]] #> <frame 33> (32) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [local 0x734a8a8] #> #> [[6]] #> <frame 32> (31) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [local 0x734abf0] #> #> [[7]] #> <frame 31> (30) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [local 0x734af38] #> #> [[8]] #> <frame 30> (29) #> expr: tryCatch(expr, error = function(e) { <...> #> env: [local 0x734b600] #> #> [[9]] #> <frame 29> (28) #> expr: try(f, silent = TRUE) #> env: [local 0x734b830] #> #> [[10]] #> <frame 28> (26) #> expr: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, <...> #> env: [local 0x734b9b8] #> #> [[11]] #> <frame 27> (26) #> expr: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, <...> #> env: [local 0x734ba98] #> #> [[12]] #> <frame 26> (25) #> expr: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, <...> #> env: [frame 0x5d20be8] #> #> [[13]] #> <frame 25> (22) #> expr: evaluate::evaluate(code, env, new_device = TRUE) #> env: [frame 0x4a28220] #> #> [[14]] #> <frame 24> (23) #> expr: force(code) #> env: [frame 0x4a29f80] #> #> [[15]] #> <frame 23> (22) #> expr: withr::with_options(list(crayon.enabled = getOption("crayon.enabled", <...> #> env: [frame 0x4a323a8] #> #> [[16]] #> <frame 22> (21) #> expr: .f(code = .l[[c(1L, 1L)]], run = .l[[c(2L, 1L)]], show = .l[[c(3L, <...> #> env: [frame 0x4a359d0] #> #> [[17]] #> <frame 21> (20) #> expr: purrr::pmap_chr(list(code = code, run = run, show = show), format_example_chunk, <...> #> env: [frame 0x4a41260] #> #> [[18]] #> <frame 20> (18) #> expr: as_data.tag_examples(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4ca58] #> #> [[19]] #> <frame 19> (18) #> expr: as_data(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4bfd8] #> #> [[20]] #> <frame 18> (17) #> expr: data_reference_topic(topic, pkg, examples = examples, run_dont_run = run_dont_run) #> env: [frame 0x56aea98] #> #> [[21]] #> <frame 17> (16) #> expr: .f(.x[[i]], ...) #> env: [frame 0x57ec5e8] #> #> [[22]] #> <frame 16> (15) #> expr: purrr::map(topics, build_reference_topic, pkg = pkg, lazy = lazy, <...> #> env: [frame 0x58c61d0] #> #> [[23]] #> <frame 15> (14) #> expr: build_reference(pkg, lazy = lazy, document = document, examples = examples, <...> #> env: [frame 0x17c9338] #> #> [[24]] #> <frame 14> (13) #> expr: build_site_local(pkg = pkg, examples = examples, document = document, <...> #> env: [frame 0x2001c88] #> #> [[25]] #> <frame 13> (12) #> expr: pkgdown::build_site(...) #> env: [frame 0x20896e8] #> #> [[26]] #> <frame 12> (0) #> expr: (function (..., crayon_enabled, crayon_colors, pkgdown_internet) <...> #> env: [frame 0x2d518e0] #> #> [[27]] #> <frame 11> (0) #> expr: (function (what, args, quote = FALSE, envir = parent.frame()) <...> #> env: [frame 0x2d4ea70] #> #> [[28]] #> <frame 10> (0) #> expr: do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4a990] #> #> [[29]] #> <frame 9> (0) #> expr: saveRDS(do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4b720] #> #> [[30]] #> <frame 8> (0) #> expr: withCallingHandlers({ <...> #> env: [frame 0x2d4a328] #> #> [[31]] #> <frame 7> (6) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d476b0] #> #> [[32]] #> <frame 6> (5) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [frame 0x2d479f8] #> #> [[33]] #> <frame 5> (2) #> expr: tryCatchList(expr, names[-nh], parentenv, handlers[-nh]) #> env: [frame 0x2d47db0] #> #> [[34]] #> <frame 4> (3) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d48360] #> #> [[35]] #> <frame 3> (2) #> expr: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]), <...> #> env: [frame 0x2d486a8] #> #> [[36]] #> <frame 2> (1) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [frame 0x2d44bc0] #> #> [[37]] #> <frame 1> (0) #> expr: tryCatch(withCallingHandlers({ <...> #> env: [frame 0x2d45330] #> #> [[38]] #> <frame 0> [global] #> expr: NULL #> env: [global] #> #> attr(,"class") #> [1] "ctxt_stack" "stack"# It is especially useful when used within a function that needs to # inspect the evaluation stack but should nonetheless be callable # within nested calls without side effects: stack_util <- function() { # n = 2 means that two layers of intervening calls should be # removed: The layer at ctxt_stack()'s call site (including the # stack_trim() call), and the layer at stack_util()'s call. stack <- stack_trim(ctxt_stack(), n = 2) stack } user_fn <- function() { # A user calls your stack utility with intervening frames: identity(identity(stack_util())) } # These intervening frames won't appear in the evaluation stack identity(user_fn())#> [[1]] #> <frame 39> (37) #> expr: user_fn() #> env: [local 0x8194ac8] #> #> [[2]] #> <frame 38> (37) #> expr: identity(user_fn()) #> env: [local 0x8194b38] #> #> [[3]] #> <frame 37> (36) #> expr: eval(expr, envir, enclos) #> env: [local 0x47270b8] #> #> [[4]] #> <frame 36> (26) #> expr: eval(expr, envir, enclos) #> env: [local 0x8194cf8] #> #> [[5]] #> <frame 35> (26) #> expr: withVisible(eval(expr, envir, enclos)) #> env: [local 0x8194f28] #> #> [[6]] #> <frame 34> (26) #> expr: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, <...> #> env: [local 0x81954d8] #> #> [[7]] #> <frame 33> (32) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [local 0x8195a50] #> #> [[8]] #> <frame 32> (31) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [local 0x8195d98] #> #> [[9]] #> <frame 31> (30) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [local 0x81960e0] #> #> [[10]] #> <frame 30> (29) #> expr: tryCatch(expr, error = function(e) { <...> #> env: [local 0x8192978] #> #> [[11]] #> <frame 29> (28) #> expr: try(f, silent = TRUE) #> env: [local 0x8192ba8] #> #> [[12]] #> <frame 28> (26) #> expr: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, <...> #> env: [local 0x8192d30] #> #> [[13]] #> <frame 27> (26) #> expr: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, <...> #> env: [local 0x8192e10] #> #> [[14]] #> <frame 26> (25) #> expr: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, <...> #> env: [frame 0x8c79038] #> #> [[15]] #> <frame 25> (22) #> expr: evaluate::evaluate(code, env, new_device = TRUE) #> env: [frame 0x4a28220] #> #> [[16]] #> <frame 24> (23) #> expr: force(code) #> env: [frame 0x4a29f80] #> #> [[17]] #> <frame 23> (22) #> expr: withr::with_options(list(crayon.enabled = getOption("crayon.enabled", <...> #> env: [frame 0x4a323a8] #> #> [[18]] #> <frame 22> (21) #> expr: .f(code = .l[[c(1L, 1L)]], run = .l[[c(2L, 1L)]], show = .l[[c(3L, <...> #> env: [frame 0x4a359d0] #> #> [[19]] #> <frame 21> (20) #> expr: purrr::pmap_chr(list(code = code, run = run, show = show), format_example_chunk, <...> #> env: [frame 0x4a41260] #> #> [[20]] #> <frame 20> (18) #> expr: as_data.tag_examples(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4ca58] #> #> [[21]] #> <frame 19> (18) #> expr: as_data(tags$tag_examples[[1]], env = new.env(parent = globalenv()), <...> #> env: [frame 0x4b4bfd8] #> #> [[22]] #> <frame 18> (17) #> expr: data_reference_topic(topic, pkg, examples = examples, run_dont_run = run_dont_run) #> env: [frame 0x56aea98] #> #> [[23]] #> <frame 17> (16) #> expr: .f(.x[[i]], ...) #> env: [frame 0x57ec5e8] #> #> [[24]] #> <frame 16> (15) #> expr: purrr::map(topics, build_reference_topic, pkg = pkg, lazy = lazy, <...> #> env: [frame 0x58c61d0] #> #> [[25]] #> <frame 15> (14) #> expr: build_reference(pkg, lazy = lazy, document = document, examples = examples, <...> #> env: [frame 0x17c9338] #> #> [[26]] #> <frame 14> (13) #> expr: build_site_local(pkg = pkg, examples = examples, document = document, <...> #> env: [frame 0x2001c88] #> #> [[27]] #> <frame 13> (12) #> expr: pkgdown::build_site(...) #> env: [frame 0x20896e8] #> #> [[28]] #> <frame 12> (0) #> expr: (function (..., crayon_enabled, crayon_colors, pkgdown_internet) <...> #> env: [frame 0x2d518e0] #> #> [[29]] #> <frame 11> (0) #> expr: (function (what, args, quote = FALSE, envir = parent.frame()) <...> #> env: [frame 0x2d4ea70] #> #> [[30]] #> <frame 10> (0) #> expr: do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4a990] #> #> [[31]] #> <frame 9> (0) #> expr: saveRDS(do.call(do.call, c(readRDS("/tmp/RtmpjyQrSc/file3f2e5de9df88"), <...> #> env: [frame 0x2d4b720] #> #> [[32]] #> <frame 8> (0) #> expr: withCallingHandlers({ <...> #> env: [frame 0x2d4a328] #> #> [[33]] #> <frame 7> (6) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d476b0] #> #> [[34]] #> <frame 6> (5) #> expr: tryCatchOne(expr, names, parentenv, handlers[[1L]]) #> env: [frame 0x2d479f8] #> #> [[35]] #> <frame 5> (2) #> expr: tryCatchList(expr, names[-nh], parentenv, handlers[-nh]) #> env: [frame 0x2d47db0] #> #> [[36]] #> <frame 4> (3) #> expr: doTryCatch(return(expr), name, parentenv, handler) #> env: [frame 0x2d48360] #> #> [[37]] #> <frame 3> (2) #> expr: tryCatchOne(tryCatchList(expr, names[-nh], parentenv, handlers[-nh]), <...> #> env: [frame 0x2d486a8] #> #> [[38]] #> <frame 2> (1) #> expr: tryCatchList(expr, classes, parentenv, handlers) #> env: [frame 0x2d44bc0] #> #> [[39]] #> <frame 1> (0) #> expr: tryCatch(withCallingHandlers({ <...> #> env: [frame 0x2d45330] #> #> [[40]] #> <frame 0> [global] #> expr: NULL #> env: [global] #> #> attr(,"class") #> [1] "ctxt_stack" "stack"