Erlang logo
User's Guide
Reference Manual
Release Notes
PDF
Top

STDLIB
Reference Manual
Version 1.17.4


Expand All
Contract All

Table of Contents

erl_id_trans

MODULE

erl_id_trans

MODULE SUMMARY

An Identity Parse Transform

DESCRIPTION

This module performs an identity parse transformation of Erlang code. It is included as an example for users who may wish to write their own parse transformers. If the option {parse_transform,Module} is passed to the compiler, a user written function parse_transform/2 is called by the compiler before the code is checked for errors.

EXPORTS

parse_transform(Forms, Options) -> Forms

Types:

Options = [ compile:option()]

Performs an identity transformation on Erlang forms, as an example.

Parse Transformations

Parse transformations are used if a programmer wants to use Erlang syntax, but with different semantics. The original Erlang code is then transformed into other Erlang code.

Note

Programmers are strongly advised not to engage in parse transformations and no support is offered for problems encountered.

See Also