apply_transformers: Apply transformers to a parse table

In styler: Non-Invasive Pretty Printing of R Code

Apply transformers to a parse table

Description

The column multi_line is updated (after the line break information is modified) and the rest of the transformers are applied afterwards, The former requires two pre visits and one post visit.

Usage

apply_transformers(pd_nested, transformers)

Arguments

pd_nested	A nested parse table.
transformers	A list of named transformer functions

Details

The order of the transformations is:

• Initialization (must be first).

• Line breaks (must be before spacing due to indention).

• Update of newline and multi-line attributes (must not change afterwards, hence line breaks must be modified first).

• spacing rules (must be after line-breaks and updating newlines and multi-line).

• indention.

• token manipulation / replacement (is last since adding and removing tokens will invalidate columns token_after and token_before).

• Update indention reference (must be after line breaks).

styler documentation built on Aug. 29, 2023, 5:10 p.m.