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# nocov start --- r-lib/rlang compat-friendly-type --- 2019-09-09 Mon 11:50
friendly_type_of <- function(x, length = FALSE) {
if (is.object(x)) {
return(sprintf("a `%s` object", paste(class(x), collapse = "/")))
}
friendly <- as_friendly_type(typeof(x))
if (length && rlang::is_vector(x)) {
friendly <- paste0(friendly, sprintf(" of length %s", length(x)))
}
friendly
}
as_friendly_type <- function(type) {
switch(type,
logical = "a logical vector",
integer = "an integer vector",
numeric = ,
double = "a double vector",
complex = "a complex vector",
character = "a character vector",
raw = "a raw vector",
string = "a string",
list = "a list",
NULL = "NULL",
environment = "an environment",
externalptr = "a pointer",
weakref = "a weak reference",
S4 = "an S4 object",
name = ,
symbol = "a symbol",
language = "a call",
pairlist = "a pairlist node",
expression = "an expression vector",
quosure = "a quosure",
formula = "a formula",
char = "an internal string",
promise = "an internal promise",
... = "an internal dots object",
any = "an internal `any` object",
bytecode = "an internal bytecode object",
primitive = ,
builtin = ,
special = "a primitive function",
closure = "a function",
type
)
}
# nocov end
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