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Force arguments that are used in closures #2807

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Merged
merged 1 commit into from
Sep 15, 2018
Merged

Force arguments that are used in closures #2807

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5 changes: 4 additions & 1 deletion R/save.r
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Original file line number Diff line number Diff line change
Expand Up @@ -118,7 +118,10 @@ plot_dim <- function(dim = c(NA, NA), scale = 1, units = c("in", "cm", "mm"),
dim
}

plot_dev <- function(device, filename, dpi = 300) {
plot_dev <- function(device, filename = NULL, dpi = 300) {
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For my own education, could you explain why we now need filename = NULL here but in some other cases (e.g., make_summary_fun()) we don't need to add a default?

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The default doesn't make sense there to me, the function needs arguments or fails. But e.g. manual_scale() could use a better error message.

force(filename)
force(dpi)

if (is.function(device))
return(device)

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2 changes: 2 additions & 0 deletions R/scale-manual.r
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Expand Up @@ -102,6 +102,8 @@ scale_discrete_manual <- function(aesthetics, ..., values) {


manual_scale <- function(aesthetic, values, ...) {
force(values)

pal <- function(n) {
if (n > length(values)) {
stop("Insufficient values in manual scale. ", n, " needed but only ",
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2 changes: 2 additions & 0 deletions R/scale-size.r
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Expand Up @@ -68,6 +68,8 @@ scale_size_discrete <- function(...) {
#' @export
#' @usage NULL
scale_size_ordinal <- function(..., range = c(2, 6)) {
force(range)

discrete_scale(
"size",
"size_d",
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6 changes: 6 additions & 0 deletions R/stat-summary-bin.R
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Expand Up @@ -65,6 +65,12 @@ StatSummaryBin <- ggproto("StatSummaryBin", Stat,
)

make_summary_fun <- function(fun.data, fun.y, fun.ymax, fun.ymin, fun.args) {
force(fun.data)
force(fun.y)
force(fun.ymax)
force(fun.ymin)
force(fun.args)

if (!is.null(fun.data)) {
# Function that takes complete data frame as input
fun.data <- match.fun(fun.data)
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