/
generator.go
48 lines (40 loc) · 1.01 KB
/
generator.go
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package codegen
import (
"io/fs"
"github.com/grafana/codejen"
)
type JennyList[T any] interface {
Generate(...T) (codejen.Files, error)
}
type Parser[T any] interface {
Parse(fs.FS, ...string) ([]T, error)
}
func NewGenerator[T any](parser Parser[T], files fs.FS) (*Generator[T], error) {
return &Generator[T]{
p: parser,
files: files,
}, nil
}
type Generator[T any] struct {
files fs.FS
p Parser[T]
}
func (g *Generator[T]) Generate(jennies JennyList[T], selectors ...string) (codejen.Files, error) {
return g.FilteredGenerate(jennies, func(t T) bool {
return true
}, selectors...)
}
func (g *Generator[T]) FilteredGenerate(jennies JennyList[T], filterFunc func(T) bool, selectors ...string) (codejen.Files, error) {
kinds, err := g.p.Parse(g.files, selectors...)
if err != nil {
return nil, err
}
filteredKinds := make([]T, 0)
for _, kind := range kinds {
if !filterFunc(kind) {
continue
}
filteredKinds = append(filteredKinds, kind)
}
return jennies.Generate(filteredKinds...)
}