List Calls Used in Function

For screening purposes it can be useful to get a list of all function calls our function may depend on. funCalls() parses the function source and returns all found function calls grouped by their package.

Usage

funCalls(name, package = NULL, sorted = FALSE)

Arguments

name

the name of the function.

package

optional name of a package; if given, the result is filtered to source environments matching package.

sorted

logical; whether calls are sorted alphabetically. Defaults to FALSE.

Value

a list of character vectors with the function calls, grouped by the environment the called functions were found in.

Details

The source packages are resolved via find(), which only sees attached packages. Calls to functions from packages that are not on the search path are reported under "<not found>".

Note

Based on code by Nicholas Cooper, adapted to conform to package standards.

See also

getParseData()

Other pkg.funinfo: funArgs(), funKeywords(), funList(), rdLabels(), rdTitle()

Examples

funCalls("combN", package="bedrock")
#> named list()