grafana/pkg/codegen/util_go.go
Selene 473898e47c
Core: Remove thema and kindsys dependencies (#84499)
* Move some thema code inside grafana

* Use new codegen instead of thema for core kinds

* Replace TS generator

* Use new generator for go types

* Remove thema from oapi generator

* Remove thema from generators

* Don't use kindsys/thema for core kinds

* Remove kindsys/thema from plugins

* Remove last thema related

* Remove most of cuectx and move utils_ts into codegen. It also deletes wire dependency

* Merge plugins generators

* Delete thema dependency 🎉

* Fix CODEOWNERS

* Fix package name

* Fix TS output names

* More path fixes

* Fix mod codeowners

* Use original plugin's name

* Remove kindsys dependency 🎉

* Modify oapi schema and create an apply function to fix elasticsearch errors

* cue.mod was deleted by mistake

* Fix TS panels

* sort imports

* Fixing elasticsearch output

* Downgrade oapi-codegen library

* Update output ts files

* More fixes

* Restore old elasticsearch generated file and skip its generation. Remove core imports into plugins

* More lint fixes

* Add codeowners

* restore embed.go file

* Fix embed.go
2024-03-21 11:11:29 +01:00

100 lines
2.3 KiB
Go

package codegen
import (
"fmt"
"regexp"
"strings"
"github.com/dave/dst"
"github.com/dave/dst/dstutil"
)
type prefixmod struct {
prefix string
replace string
rxp *regexp.Regexp
rxpsuff *regexp.Regexp
}
// PrefixDropper returns a dstutil.ApplyFunc that removes the provided prefix
// string when it appears as a leading sequence in type names, var names, and
// comments in a generated Go file.
func PrefixDropper(prefix string) dstutil.ApplyFunc {
return (&prefixmod{
prefix: prefix,
rxpsuff: regexp.MustCompile(fmt.Sprintf(`%s([a-zA-Z_]+)`, prefix)),
rxp: regexp.MustCompile(fmt.Sprintf(`%s([\s.,;-])`, prefix)),
}).applyfunc
}
func depoint(e dst.Expr) dst.Expr {
if star, is := e.(*dst.StarExpr); is {
return star.X
}
return e
}
func (d prefixmod) applyfunc(c *dstutil.Cursor) bool {
n := c.Node()
switch x := n.(type) {
case *dst.ValueSpec:
d.handleExpr(x.Type)
for _, id := range x.Names {
d.do(id)
}
case *dst.TypeSpec:
// Always do typespecs
d.do(x.Name)
case *dst.Field:
// Don't rename struct fields. We just want to rename type declarations, and
// field value specifications that reference those types.
d.handleExpr(x.Type)
case *dst.File:
for _, def := range x.Decls {
comments := def.Decorations().Start.All()
def.Decorations().Start.Clear()
// For any reason, sometimes it retrieves the comment duplicated 🤷
commentMap := make(map[string]bool)
for _, c := range comments {
if _, ok := commentMap[c]; !ok {
commentMap[c] = true
def.Decorations().Start.Append(d.rxpsuff.ReplaceAllString(c, "$1"))
if d.replace != "" {
def.Decorations().Start.Append(d.rxp.ReplaceAllString(c, d.replace+"$1"))
}
}
}
}
}
return true
}
func (d prefixmod) handleExpr(e dst.Expr) {
// Deref a StarExpr, if there is one
expr := depoint(e)
switch x := expr.(type) {
case *dst.Ident:
d.do(x)
case *dst.ArrayType:
if id, is := depoint(x.Elt).(*dst.Ident); is {
d.do(id)
}
case *dst.MapType:
if id, is := depoint(x.Key).(*dst.Ident); is {
d.do(id)
}
if id, is := depoint(x.Value).(*dst.Ident); is {
d.do(id)
}
}
}
func (d prefixmod) do(n *dst.Ident) {
if n.Name != d.prefix {
n.Name = strings.TrimPrefix(n.Name, d.prefix)
} else if d.replace != "" {
n.Name = d.replace
}
}