1Author: aurimas@google.com
2Updated: 6/6/2017
3
4Instructions on how to compile and apply refaster rules to support library
5
60. Download error-prone and refaster jars
7http://errorprone.info/docs/refaster will have up to date instructions
8
91. Compile the refaster rule (in this example IsAtLeastO.java)
10java -cp /path/to/android.jar:/path/to/support-compat.jar:javac-9-dev-r3297-4.jar:error_prone_refaster-2.0.18.jar com.google.errorprone.refaster.RefasterRuleCompiler IsAtLeastO.java --out `pwd`/myrule.refaster
11
122. Update build to use the refaster rule
13Add compiler args to error-prone in SupportLibraryPlugin.groovy
14'-XepPatchChecks:refaster:/path/to/refaster/myrule.refaster',
15'-XepPatchLocation:' + project.projectDir
16
173. Compile support library using the refaster rule
18./gradlew assembleErrorProne
19
204. Apply patches
21error-prone will produce patch files like "design/error-prone.patch" and to apply them, cd into the
22directory e.g. "design" and then run:
23patch -p0 -u -i error-prone.patch
24
255. Rules have been applied! Celebrate!