mirror of
https://github.com/wader/fq.git
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b08ef00dd1
Replaces []Format with a Group type. A bit more type safe. Breaking change for RegisterFormat, now takes a first argument that is a "single" format group. Lots of naming cleanup. This is also preparation for decode group argument which will enable doing intresting probing, ex a format decoder could know it's decode as part of probe group (html could be probed possibly), or have "arg probe" group for decoder who inspect args to know if they should probe (-d /path/to/schema etc) to enable nice CLI-ergonomics.
126 lines
2.5 KiB
Go
126 lines
2.5 KiB
Go
package interp
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import (
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"errors"
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"fmt"
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"io/fs"
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"sync"
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"github.com/wader/fq/internal/gojqex"
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"github.com/wader/fq/pkg/decode"
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"golang.org/x/exp/slices"
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)
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type EnvFuncFn func(env *Interp) gojqex.Function
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type Registry struct {
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allGroup *decode.Group
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groups map[string]*decode.Group
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formatResolveOnce sync.Once
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formatResolved bool
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EnvFuncFns []EnvFuncFn
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FSs []fs.ReadDirFS
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}
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func NewRegistry() *Registry {
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return &Registry{
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allGroup: &decode.Group{Name: "all"},
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groups: map[string]*decode.Group{},
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formatResolveOnce: sync.Once{},
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}
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}
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func (r *Registry) Format(group *decode.Group, format *decode.Format) *decode.Format {
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if r.formatResolved {
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// for now can't change after resolved
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panic("registry already resolved")
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}
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if _, ok := r.groups[group.Name]; ok {
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panic(fmt.Sprintf("%s: format already registered", group.Name))
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}
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group.Formats = append(group.Formats, format)
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r.groups[group.Name] = group
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format.Name = group.Name
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for _, g := range format.Groups {
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r.groups[g.Name] = g
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g.Formats = append(g.Formats, format)
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}
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r.allGroup.Formats = append(r.allGroup.Formats, format)
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return format
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}
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func (r *Registry) FS(fs fs.ReadDirFS) {
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r.FSs = append(r.FSs, fs)
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}
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func (r *Registry) Func(funcFn EnvFuncFn) {
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r.EnvFuncFns = append(r.EnvFuncFns, funcFn)
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}
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func sortFormats(g *decode.Group) {
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slices.SortFunc(g.Formats, func(a, b *decode.Format) bool {
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if a.ProbeOrder == b.ProbeOrder {
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return a.Name < b.Name
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}
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return a.ProbeOrder < b.ProbeOrder
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})
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}
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func (r *Registry) resolveGroups() {
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r.formatResolveOnce.Do(func() {
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for _, g := range r.groups {
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for _, f := range g.Formats {
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for _, d := range f.Dependencies {
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if len(d.Out.Formats) != 0 {
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// already resolved
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continue
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}
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for _, dg := range d.Groups {
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d.Out.Formats = append(d.Out.Formats, dg.Formats...)
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}
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sortFormats(d.Out)
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}
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}
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}
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for _, g := range r.groups {
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sortFormats(g)
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}
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r.formatResolved = true
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})
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}
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func (r *Registry) Group(name string) (*decode.Group, error) {
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r.resolveGroups()
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if g, ok := r.groups[name]; ok {
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return g, nil
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}
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return nil, errors.New("format group not found")
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}
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func (r *Registry) MustGroup(name string) *decode.Group {
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g, err := r.Group(name)
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if err == nil {
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return g
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}
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panic(err)
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}
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func (r *Registry) Groups() map[string]*decode.Group {
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r.resolveGroups()
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return r.groups
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}
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func (r *Registry) MustAll() *decode.Group {
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r.resolveGroups()
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return r.allGroup
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}
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