separateExpressionBlocks {CodeDepends}

Convert a script into individual top-level calls

Description

This function converts a script of code blocks (e.g. from Sweave, XML, or an annotated script) with grouped expressions into individual top-level calls. The intent of this is to allow us to deal with the calls at a higher-level of granularity than code blocks. In other words, we can easily compute the depenendcies on the individual calls rather than on collections of calls. This allows us to re-evaluate individual expressions rather than entire code blocks when we have to update variables due to changes in "earlier" variables, i.e. those defined earlier in the script and recomputed for various reasons.

Usage

separateExpressionBlocks(blocks)

Arguments

blocks

a list of the expressions or calls, i.e. the code blocks, in the script.

Value

A list of call or assignment expressions.

Author(s)

Duncan Temple Lang

See Also

readScript

Examples

 f = system.file("samples", "dual.R", package = "CodeDepends")
 sc = readScript(f)
 separateExpressionBlocks(sc)