gtools (version 3.9.2)

unByteCode: Convert a byte-code function to an interpreted-code function

Description

The purpose of these functions is to allow a byte coded function to be converted back into a fully interpreted function as a temporary work around for issues in byte-code interpretation.

Usage

unByteCode(fun)
assignEdgewise(name, env, value)
unByteCodeAssign(fun)

Arguments

fun

function to be modified

name

object name

env

namespace

value

new function body

Value

All three functions return a copy of the modified function or assigned value.

Details

unByteCode returns a copy of the function that is directly interpreted from text rather than from byte-code.

assignEdgewise makes an assignment into a locked environment.

unByteCodeAssign changes the specified function in its source environment to be directly interpreted from text rather than from byte-code.

References

These functions were inspired as a work-around to R bug https://bugs.r-project.org/bugzilla/show_bug.cgi?id=15215.

See Also

disassemble, assign

Examples

# NOT RUN {
data(badDend)
dist2 <- function(x) as.dist(1 - cor(t(x), method = "pearson"))
hclust1 <- function(x) hclust(x, method = "single")

distance <- dist2(badDend)
cluster <- hclust1(distance)

dend <- as.dendrogram(cluster)
# }
# NOT RUN {
## In R 2.3.0 and earlier crashes with a node stack overflow error
plot(dend)
## Error in xy.coords(x, y, recycle = TRUE) : node stack overflow
# }
# NOT RUN {
## convert stats:::plotNode from byte-code to interpreted-code
unByteCodeAssign(stats:::plotNode)

# increase recursion limit
options("expressions" = 5e4)

# now the function does not crash
plot(dend)
# }