codetools {codetools}R Documentation

Low Level Code Analysis Tools for R

Description

These functions provide some tools for analysing R code. Mainly indented to support the other tools in this package and byte code compilation.

Usage

collectLocals(e, collect) 
collectUsage(fun, name = "<anonymous>", ...) 
constantFold(e, env = NULL, fail = NULL) 
findFuncLocals(formals, body) 
findLocals(e, envir = .BaseEnv) 
findLocalsList(elist, envir = .BaseEnv)
flattenAssignment(e) 
getAssignedVar(e) 
isConstantValue(v, w) 
makeCodeWalker(..., handler, call, leaf) 
makeLocalsCollector(..., leaf, handler, isLocal, exit, collect) 
makeUsageCollector(fun, ..., name, enterLocal, enterGlobal, enterInternal,
                   startCollectLocals, finishCollectLocals, warn,
                   signal)
walkCode(e, w = makeCodeWalker())

Arguments

e R expression.
elist list of R expressions.
v R object.
fun closure.
formals formal arguments of a closure.
body body of a closure.
name character.
env character.
envir environment.
w code walker.
... extra elements for code walker.
collect function.
fail function.
handler function.
call function.
leaf function.
isLocal function.
exit function.
enterLocal function.
enterGlobal function.
enterInternal function.
startCollectLocals function.
finishCollectLocals function.
warn function.
signal function.

Author(s)

Luke Tierney

[Package codetools version 0.2-2 Index]