Crate extendr_macros

Macros for generating wrappers for rust functions.

Macros

R

Execute R code by parsing and evaluating tokens.

Rraw

Execute R code by parsing and evaluating tokens but without expanding parameters.

call

Call a function or primitive defined by a text expression with arbitrary parameters. This currently works by parsing and evaluating the string in R, but will probably acquire some shortcuts for simple expressions, for example by caching symbols and constant values.

extendr_module

Define a module and export symbols to R Example:

impl_try_from_robj_tuples

list

Create a List R object from a list of name-value pairs.

pairlist

Create a Pairlist R object from a list of name-value pairs.

Attribute Macros

extendr

The #[extendr]-macro may be placed on three items

Derive Macros

IntoDataFrameRow

Enable the construction of dataframes from arrays of structures.

IntoRobj

Derives an implementation of From<Struct> for Robj and From<&Struct> for Robj on this struct.

TryFromRobj

Derives an implementation of TryFrom<Robj> for Struct and TryFrom<&Robj> for Struct on this struct.