R: Check R Code for Possible Problems

checkUsage {codetools}

R Documentation

Check R Code for Possible Problems

Description

Check R code for possible problems.

Usage

checkUsage(fun, name = "<anonymous>", report = cat, all = FALSE, 
           suppressLocal = FALSE, suppressParamAssigns = !all,
           suppressParamUnused = !all, suppressFundefMismatch = FALSE,
           suppressLocalUnused = FALSE, suppressNoLocalFun = !all,
           skipWith = FALSE, suppressUndefined = dfltSuppressUndefined,
           suppressPartialMatchArgs = TRUE) 
checkUsageEnv(env, ...) 
checkUsagePackage(pack, ...)

Arguments

`fun`	closure.
`name`	character; name of closure.
`env`	environment containing closures to check.
`pack`	character naming package to check.
`...`	options to be passed to `checkUsage`.
`report`	function to use to report possible problems.
`all`	logical; report all possible problems if TRUE.
`suppressLocal`	suppress all local variable warnings.
`suppressParamAssigns`	suppress warnings about assignments to formal parameters.
`suppressParamUnused`	suppress warnings about unused formal parameters.
`suppressFundefMismatch`	suppress warnings about multiple local function definitions with different formal argument lists
`suppressLocalUnused`	suppress warnings about unused local variables
`suppressNoLocalFun`	suppress warnings about using local variables as functions with no apparent local function definition
`skipWith`	logical; if true, do not examine code portion of `with` or `within` expressions.
`suppressUndefined`	suppress warnings about undefined global functions and variables.
`suppressPartialMatchArgs`	suppress warnings about partial argument matching

Details

checkUsage checks a single R closure. Options control which possible problems to report. The default settings are moderately verbose. A first pass might use suppressLocal=TRUE to suppress all information related to local variable usage. The suppressXYZ values can either be scalar logicals or character vectors; then they are character vectors they only suppress problem reports for the variables with names in the vector.

checkUsageEnv and checkUsagePackage are convenience functions that apply checkUsage to all closures in an environment or a package. checkUsagePackage requires that the package be loaded. If the package has a name space then the internal name space frame is checked.

Author(s)

Luke Tierney

Examples

checkUsage(checkUsage)
checkUsagePackage("codetools",all=TRUE)
## Not run: checkUsagePackage("base",suppressLocal=TRUE)

[Package codetools version 0.2-20 Index]