Token Defaults Generator
Script that generates component theme data defaults based on token data.
Usage
Run this program from the root of the git repository:
dart dev/tools/gen_defaults/bin/gen_defaults.dart [-v]
This updates generated/used_tokens.csv
and the various component theme files.
Templates
There is a template file for every component that needs defaults from
the token database. These templates are implemented as subclasses of
TokenTemplate
. This base class provides some utilities and a structure
for adding a new block of generated code to the bottom of a given file.
Templates need to override the generate
method to provide the generated
code block as a string.
See lib/fab_template.dart
for an example that generates defaults for the
Floating Action Button.
Tokens
Tokens are stored in JSON files in data/
, and are sourced from
an internal Google database.
template.dart
should provide nearly all useful token resolvers
(e.g. color
, shape
, etc.). For special cases in which one shouldn't
be defined, use getToken
to get the raw token value. The script, through
the various revolvers and getToken
, validates tokens, keeps track of
which tokens are used, and generates generated/used_tokens.csv
.