[post] gommon format: A customized goimports for formatting go code

[at15]

Type

• request post from @at15

Related

• goimport that checks and replaces specific import

Description

goimports works better than gofmt because it groups import. However, sometimes I want to enforce extra rules like putting proto imports at the bottom, group imports from current project together, warn/error if some packages are imported e.g. github.com/pkg/errors.

The code is still in progress in dyweb/gommon#127 (well 5+ months PR ... 咕咕.... And the post plans to cover the following

• how gofmt and goimports works
• how to parse go code, basic struct of go ast
• modify go ast and dump it back to text
• why we design gommon format this way

Update