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check_pkg <- function(name, reason, install = TRUE) {
if (is_installed(name)) {
return(invisible(TRUE))
}
glubort(NULL, "The {name} package is required to {reason}.",
if (install) '\nPlease install it with `install.packages("{name}")`' else ""
)
}
# ngettext() does extra work, this function is a simpler version
ntext <- function(n, msg1, msg2) {
if (n == 1) msg1 else msg2
}
bad <- function(..., .envir = parent.frame()) {
glubort(NULL, ..., .envir = parent.frame())
}
bad_args <- function(args, ..., .envir = parent.frame()) {
glubort(fmt_args(args), ..., .envir = .envir)
}
bad_pos_args <- function(pos_args, ..., .envir = parent.frame()) {
glubort(fmt_pos_args(pos_args), ..., .envir = .envir)
}
bad_calls <- function(calls, ..., .envir = parent.frame()) {
glubort(fmt_calls(calls), ..., .envir = .envir)
}
bad_named_calls <- function(named_calls, ..., .envir = parent.frame()) {
glubort(fmt_named_calls(named_calls), ..., .envir = .envir)
}
bad_eq_ops <- function(named_calls, ..., .envir = parent.frame()) {
glubort(NULL, ..., "\n", fmt_wrong_eq_ops(named_calls), sep="", .envir = .envir)
}
bad_cols <- function(cols, ..., .envir = parent.frame()) {
glubort(fmt_cols(cols), ..., .envir = .envir)
}
bad_measures <- function(measures, ..., .envir = parent.frame()) {
glubort(fmt_measures(measures), ..., .envir = .envir)
}
glubort <- function(header, ..., .envir = parent.frame(), .abort = abort) {
text <- glue(..., .envir = .envir)
if (!is_null(header)) text <- paste0(header, " ", text)
.abort(text)
}
fmt_args <- function(x) {
x <- parse_args(x)
fmt_obj(x)
}
fmt_pos_args <- function(x) {
args <- ntext(length(x), "Argument", "Arguments")
glue("{args} {fmt_comma(x)}")
}
fmt_calls <- function(...) {
x <- parse_named_call(...)
fmt_obj(x)
}
fmt_named_calls <- function(...) {
x <- parse_named_call(...)
fmt_named(x)
}
fmt_wrong_eq_ops <- function(...) {
x <- parse_named_call(...)
fmt_items(
paste0("Did you mean ", fmt_obj1(paste0(names2(x), " == ", x)), "?"),
bullet = "*"
)
}
fmt_cols <- function(x) {
cols <- ntext(length(x), "Column", "Columns")
glue("{cols} {fmt_obj(x)}")
}
fmt_measures <- function(x) {
measures <- ntext(length(x), "Measure", "Measures")
glue("{measures} {fmt_obj(x)}")
}
fmt_named <- function(x) {
fmt_comma(paste0(fmt_obj1(names2(x)), " = ", x))
}
fmt_obj <- function(x) {
fmt_comma(fmt_obj1(x))
}
fmt_obj1 <- function(x) {
paste0("`", x, "`")
}
fmt_classes <- function(x) {
paste(class(x), collapse = "/")
}
fmt_dims <- function(x) {
paste0("[", paste0(x, collapse = " x "), "]")
}
fmt_comma <- function(..., .max = 6) {
x <- paste0(...)
if (length(x) > .max) {
length(x) <- .max
x[[.max]] <- "..."
}
commas(x)
}
fmt_items <- function(x, bullet = "-", .max = 6) {
if (length(x) > .max) {
more <- glue("({length(x) - (.max - 1)} more)")
length(x) <- .max
x[.max] <- more
}
paste0(glue("{bullet} {x}"), collapse = "\n")
}
parse_args <- function(x) {
# convert single formula to list of length 1
x <- unlist(list(x), recursive = FALSE)
is_fml <- map_lgl(x, is_formula)
x[is_fml] <- map_chr(map(x[is_fml], "[[", 2), as_string)
unlist(x)
}
parse_named_call <- function(x) {
map_chr(as.list(x), quo_text)
}
# From rlang
friendly_type_of <- function(x) {
if (is.object(x)) {
sprintf("a `%s` object", fmt_classes(x))
} else {
as_friendly_type(typeof(x))
}
}
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
)
}
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