# `x` must be a list
Code
list_unchop(1, indices = list(1))
Condition
Error in `list_unchop()`:
! `x` must be a list, not a number.
---
Code
list_unchop(1, indices = list(1), error_call = call("foo"), error_arg = "arg")
Condition
Error in `foo()`:
! `arg` must be a list, not a number.
---
Code
list_unchop(data.frame(x = 1), indices = list(1))
Condition
Error in `list_unchop()`:
! `x` must be a list, not a <data.frame> object.
# `indices` must be a list
Code
list_unchop(list(1), indices = 1)
Condition
Error in `list_unchop()`:
! `indices` must be a list, not a number.
---
Code
list_unchop(list(1), indices = 1, error_call = call("foo"))
Condition
Error in `foo()`:
! `indices` must be a list, not a number.
---
Code
list_unchop(list(1), indices = data.frame(x = 1))
Condition
Error in `list_unchop()`:
! `indices` must be a list, not a <data.frame> object.
# unchopping recycles elements of x to the size of the index
Code
(expect_error(list_unchop(x, indices = indices)))
Output
<error/vctrs_error_incompatible_size>
Error in `list_unchop()`:
! Can't recycle `x[[1]]` (size 2) to size 3.
Code
(expect_error(list_unchop(x, indices = indices, error_call = call("foo"),
error_arg = "arg")))
Output
<error/vctrs_error_incompatible_size>
Error in `foo()`:
! Can't recycle `arg[[1]]` (size 2) to size 3.
# unchopping takes the common type
Code
(expect_error(list_unchop(x, indices = indices), class = "vctrs_error_incompatible_type")
)
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <double> and `x[[2]]` <character>.
Code
(expect_error(list_unchop(x, indices = indices, error_call = call("foo"),
error_arg = "arg"), class = "vctrs_error_incompatible_type"))
Output
<error/vctrs_error_ptype2>
Error in `foo()`:
! Can't combine `arg[[1]]` <double> and `arg[[2]]` <character>.
# common type failure uses positional errors
Code
x <- list(1, a = "x", 2)
(expect_error(list_unchop(x)))
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <double> and `x$a` <character>.
Code
(expect_error(list_unchop(x, indices = list(2, 1, 3))))
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <double> and `x$a` <character>.
Code
(expect_error(list_unchop(x, ptype = double())))
Output
<error/vctrs_error_cast>
Error in `list_unchop()`:
! Can't convert `x$a` <character> to <double>.
Code
(expect_error(list_unchop(x, indices = list(2, 1, 3), ptype = double())))
Output
<error/vctrs_error_cast>
Error in `list_unchop()`:
! Can't convert `x$a` <character> to <double>.
Code
y <- list(1, a = 2.5)
(expect_error(list_unchop(y, ptype = integer())))
Output
<error/vctrs_error_cast_lossy>
Error in `list_unchop()`:
! Can't convert from `x$a` <double> to <integer> due to loss of precision.
* Locations: 1
Code
(expect_error(list_unchop(y, indices = list(2, 1), ptype = integer())))
Output
<error/vctrs_error_cast_lossy>
Error in `list_unchop()`:
! Can't convert from `x$a` <double> to <integer> due to loss of precision.
* Locations: 1
# can specify a ptype to override common type
Code
(expect_error(list_unchop(x, indices = indices, ptype = integer())))
Output
<error/vctrs_error_cast_lossy>
Error in `list_unchop()`:
! Can't convert from `x[[1]]` <double> to <integer> due to loss of precision.
* Locations: 1
Code
(expect_error(list_unchop(x, indices = indices, ptype = integer(), error_call = call(
"foo"), error_arg = "arg")))
Output
<error/vctrs_error_cast_lossy>
Error in `foo()`:
! Can't convert from `arg[[1]]` <double> to <integer> due to loss of precision.
* Locations: 1
# list_unchop() can repair names quietly
Code
res <- list_unchop(vec_chop(x, indices), indices = indices, name_repair = "unique_quiet")
---
Code
res <- list_unchop(vec_chop(x, indices), indices = indices, name_repair = "universal_quiet")
# list_unchop() errors on unsupported location values
Code
(expect_error(list_unchop(list(1, 2), indices = list(c(1, 2), 0)), class = "vctrs_error_subscript_type")
)
Output
<error/vctrs_error_subscript_type>
Error:
! Can't subset elements.
x Subscript can't contain `0` values.
i It has a `0` value at location 1.
Code
(expect_error(list_unchop(list(1), indices = list(-1)), class = "vctrs_error_subscript_type")
)
Output
<error/vctrs_error_subscript_type>
Error:
! Can't subset elements.
x Subscript can't contain negative locations.
# list_unchop() fails with complex foreign S3 classes
Code
x <- structure(foobar(1), attr_foo = "foo")
y <- structure(foobar(2), attr_bar = "bar")
(expect_error(list_unchop(list(x, y)), class = "vctrs_error_incompatible_type"))
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <vctrs_foobar> and `x[[2]]` <vctrs_foobar>.
x Some attributes are incompatible.
i The author of the class should implement vctrs methods.
i See <https://vctrs.r-lib.org/reference/faq-error-incompatible-attributes.html>.
Code
(expect_error(list_unchop(list(x, y), error_call = call("foo"), error_arg = "arg"),
class = "vctrs_error_incompatible_type"))
Output
<error/vctrs_error_ptype2>
Error in `foo()`:
! Can't combine `arg[[1]]` <vctrs_foobar> and `arg[[2]]` <vctrs_foobar>.
x Some attributes are incompatible.
i The author of the class should implement vctrs methods.
i See <https://vctrs.r-lib.org/reference/faq-error-incompatible-attributes.html>.
# list_unchop() fails with complex foreign S4 classes
Code
joe <- .Counts(c(1L, 2L), name = "Joe")
jane <- .Counts(3L, name = "Jane")
(expect_error(list_unchop(list(joe, jane)), class = "vctrs_error_incompatible_type")
)
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <vctrs_Counts> and `x[[2]]` <vctrs_Counts>.
x Some attributes are incompatible.
i The author of the class should implement vctrs methods.
i See <https://vctrs.r-lib.org/reference/faq-error-incompatible-attributes.html>.
Code
(expect_error(list_unchop(list(joe, jane), error_call = call("foo"), error_arg = "arg"),
class = "vctrs_error_incompatible_type"))
Output
<error/vctrs_error_ptype2>
Error in `foo()`:
! Can't combine `arg[[1]]` <vctrs_Counts> and `arg[[2]]` <vctrs_Counts>.
x Some attributes are incompatible.
i The author of the class should implement vctrs methods.
i See <https://vctrs.r-lib.org/reference/faq-error-incompatible-attributes.html>.
# list_unchop() falls back to c() if S3 method is available
Code
(expect_error(list_unchop(list(foobar(1), foobar(2)), indices = list(c(1, 3),
integer())), class = "vctrs_error_subscript_oob"))
Output
<error/vctrs_error_subscript_oob>
Error:
! Can't subset elements past the end.
i Location 3 doesn't exist.
i There are only 2 elements.
---
Code
x <- list(foobar(1:2))
indices <- list(1:3)
(expect_error(list_unchop(x, indices = indices)))
Output
<error/vctrs_error_incompatible_size>
Error in `list_unchop()`:
! Can't recycle `x[[1]]` (size 2) to size 3.
Code
(expect_error(list_unchop(x, indices = indices, error_arg = "arg", error_call = call(
"foo"))))
Output
<error/vctrs_error_incompatible_size>
Error in `foo()`:
! Can't recycle `arg[[1]]` (size 2) to size 3.
# list_unchop() falls back for S4 classes with a registered c() method
Code
(expect_error(list_unchop(list(joe, 1, jane), indices = list(c(1, 2), 3, 4)),
class = "vctrs_error_incompatible_type"))
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x[[1]]` <vctrs_Counts> and `x[[2]]` <double>.
# list_unchop() fallback doesn't support `name_spec` or `ptype`
Code
foo <- structure(foobar(1), foo = "foo")
bar <- structure(foobar(2), bar = "bar")
(expect_error(with_c_foobar(list_unchop(list(foo, bar), name_spec = "{outer}_{inner}")),
"name specification"))
Output
<error/rlang_error>
Error in `list_unchop()`:
! Can't use a name specification with non-vctrs types.
vctrs methods must be implemented for class `vctrs_foobar`.
See <https://vctrs.r-lib.org/articles/s3-vector.html>.
Code
(expect_error(with_c_foobar(list_unchop(list(foo, bar), name_spec = "{outer}_{inner}",
error_call = call("foo"))), "name specification"))
Output
<error/rlang_error>
Error in `foo()`:
! Can't use a name specification with non-vctrs types.
vctrs methods must be implemented for class `vctrs_foobar`.
See <https://vctrs.r-lib.org/articles/s3-vector.html>.
Code
x <- list(foobar(1))
(expect_error(with_c_foobar(list_unchop(x, ptype = "")), class = "vctrs_error_incompatible_type")
)
Output
<error/vctrs_error_cast>
Error in `list_unchop()`:
! Can't convert `x[[1]]` <vctrs_foobar> to <character>.
# list_unchop() does not support non-numeric S3 indices
Code
(expect_error(list_unchop(list(1), indices = list(factor("x"))), class = "vctrs_error_subscript_type")
)
Output
<error/vctrs_error_subscript_type>
Error:
! Can't subset elements.
x Subscript must be numeric, not the string "x".
Code
(expect_error(list_unchop(list(1), indices = list(foobar(1L))), class = "vctrs_error_subscript_type")
)
Output
<error/vctrs_error_subscript_type>
Error:
! Can't subset elements.
x Subscript must be numeric, not a <vctrs_foobar> object.
# can ignore names in `list_unchop()` by providing a `zap()` name-spec (#232)
Code
(expect_error(list_unchop(list(a = c(b = 1:2)))))
Output
<error/rlang_error>
Error in `list_unchop()`:
! Can't merge the outer name `a` with a vector of length > 1.
Please supply a `.name_spec` specification.
Code
(expect_error(list_unchop(list(a = c(b = 1:2)), error_call = call("foo"))))
Output
<error/rlang_error>
Error in `list_unchop()`:
! Can't merge the outer name `a` with a vector of length > 1.
Please supply a `.name_spec` specification.
---
Code
x <- list(a = c(b = letters), b = 3L)
(expect_error(list_unchop(x, name_spec = zap()), class = "vctrs_error_incompatible_type")
)
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x$a` <character> and `x$b` <integer>.
Code
x <- list(a = c(foo = 1:2), b = c(bar = ""))
(expect_error(list_unchop(x, indices = list(2:1, 3), name_spec = zap()), class = "vctrs_error_incompatible_type")
)
Output
<error/vctrs_error_ptype2>
Error in `list_unchop()`:
! Can't combine `x$a` <integer> and `x$b` <character>.
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