match_call: Match Call Arguments to Parameters

In nick-ulle/ast: Low-level Static Analysis Tools for R Code

Description

This function matches the arguments in an unevaluated call to the parameters in a function definition.

Usage

match_call(node, definition, expand_dots, envir)

## S3 method for class 'call'
match_call(node, definition = find_function(node, envir),
  expand_dots = TRUE, envir = parent.frame())

## S3 method for class 'Call'
match_call(node, definition = find_function(node, envir),
  expand_dots = TRUE, envir = parent.frame())

Arguments

node	An unevaluated call with arguments to match.
definition	Optional definition for the called function.
expand_dots	(logical) Should arguments matching ... in the call be expanded or left as a ... argument?
envir	(environment) An environment where find_function() can look up function definition. Only used if definition is missing.

Details

This function is a wrapper for match.call() that adds support for:

• Primitive functions

• Anonymous functions

• Automatic definition lookup based on the call

• ASTNode objects as the call or the defintion

Value

An object of the same class as node, with full parameter names for all arguments.

See Also

match.call(), find_function()

nick-ulle/ast documentation built on Oct. 18, 2019, 4:37 a.m.