Reconcile coremodels, entities, objects under new kind framework (#56492)

* Update thema to latest

* Deal with s/Library/*Runtime/

* Commit new, working results of codegen

* We like pointers now

* Always take runtime arg for NewBase()

* Sketchy handwavy pass at entity meta framework

* Little nibbles

* Update pkg/framework/coremodel/entityframework.cue

Co-authored-by: Artur Wierzbicki <wierzbicki.artur.94@gmail.com>

* Move file into new framework location

* Introduce loaders, Go code

* Complete rename to kind

* Flesh out framework, add svg/dashboard examples

* Cruft removal

* Remove generated kind go files from gitignore

* Refine maturity concept, add SlotKind

* Update embed and go deps

* Export PrefixWithGrafanaCUE

* Make the loader actually work, holy crap

* Many small tweaks to type.cue

* Add Apache 2 licensing exceptions for kinds

* Add new kinds dir, start of generator

* Roll back to earlier oapi-codegen

* Introduce new grafana-specific CUE loaders

* Introduce new tidy code generators framework

* Catch up kind framework with tinkering

* Add slices for the generators

* Add write/verify step to main generator

* Many renames

* Split up kind framework cue files

* Use kind.Decl within generated kinds

* Create kind.SomeDecl wrapper type to cache lineages

* Better names again

* Get one generated implemented, hopefully

* Copy dashboard schema into new kind.cue

* Small fixes to make the initial gen work

* Put svg kind in its new home

* Add generated Go dashboard type

* More renames and cleanups

* Add base kind registry and generator

* Stop blacklisting *_gen.go files

This is not the Go best practice, anyway. All we actually want to ignore
for enterprise is generated wire files.

* Change codegen output directories

pkg/kind -> pkg/kinds
pkg/registry/kindreg -> pkg/registry/corekind

* Rename pkg/framework/kind to pkg/kindsys

* Add core structured kind generator

* Add plural and machine names to kind spec

* Copy playlist over to kind system

* Consolidate kindsys files

* Add raw kind generator

* Update CODEOWNERS for kind framework

* Touch up comments a bit

* More docs tweaks

* Remove generated types to reduce noise for review

* Split each generator into its own file

* Rename Slot kind to Composable kind

* Add handwavy types for customkind loading

* Guard against init calls to framework loader

* First pass at doc on extending the kind system

* Improve attribute example in docs

* Fix wire imports

* Add basic TS types generator

* Fix composable kind category def

* No need for a separate file with generate directive

* Catch dashboard schema up

* Rename generator types to something saner and generic

* Make version configurable in ts/go generators

* Add CommonMeta to ease property access

* Add kindsys prop indicating whether lineage is group

* Put all kind categories back in a single file

* Finish with kindsys group props

* Refactor maturity progression per discussion

- Replace "committed" with "merged"
- All kindcats can use all maturity levels, at least for now

* Convert ts veneer index generator to modular system

* Move over to new jennywrites framework

* Strip down old coremodel generator

* Use public version of jennywrites

* Pull latest thema

* Commit generated Go types

* Add header injection postprocessor

* Move sdboyer/jennywrites to grafana/codejen

* Tweak header output

* Remove dashboard and playlist coremodels

* Fix up backend dashboards devenv test

* Fix TS import patterns to new gen filename

* Update internal imports, remove coremodel registry

* Fix compilation errors, wire generation

* Export and replace the prefix dropper

* More Go struct and field name changes

* Last name fixes, hopefully

* Fix lint errors

* Last lint error

Co-authored-by: Artur Wierzbicki <wierzbicki.artur.94@gmail.com>

pkg/codegen/util_go.go

@@ -3,11 +3,13 @@ package codegen
 import (
 	"bytes"
 	"fmt"
+	"go/ast"
 	"go/format"
 	"go/parser"
 	"go/token"
 	"os"
 	"path/filepath"
+	"regexp"
 	"strings"
 
 	"golang.org/x/tools/go/ast/astutil"
@@ -65,3 +67,84 @@ func postprocessGoFile(cfg genGoFile) ([]byte, error) {
 
 	return byt, nil
 }
+
+type prefixmod struct {
+	str     string
+	base    string
+	rxp     *regexp.Regexp
+	rxpsuff *regexp.Regexp
+}
+
+// PrefixDropper returns an astutil.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) astutil.ApplyFunc {
+	return (&prefixmod{
+		str:     prefix,
+		rxpsuff: regexp.MustCompile(fmt.Sprintf(`%s([a-zA-Z_]+)`, prefix)),
+		rxp:     regexp.MustCompile(fmt.Sprintf(`%s([\s.,;-])`, prefix)),
+	}).applyfunc
+}
+
+func depoint(e ast.Expr) ast.Expr {
+	if star, is := e.(*ast.StarExpr); is {
+		return star.X
+	}
+	return e
+}
+
+func (d prefixmod) applyfunc(c *astutil.Cursor) bool {
+	n := c.Node()
+
+	switch x := n.(type) {
+	case *ast.ValueSpec:
+		d.handleExpr(x.Type)
+		for _, id := range x.Names {
+			d.do(id)
+		}
+	case *ast.TypeSpec:
+		// Always do typespecs
+		d.do(x.Name)
+	case *ast.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 *ast.CommentGroup:
+		for _, c := range x.List {
+			c.Text = d.rxpsuff.ReplaceAllString(c.Text, "$1")
+			if d.base != "" {
+				c.Text = d.rxp.ReplaceAllString(c.Text, d.base+"$1")
+			}
+		}
+	}
+	return true
+}
+
+func (d prefixmod) handleExpr(e ast.Expr) {
+	// Deref a StarExpr, if there is one
+	expr := depoint(e)
+	switch x := expr.(type) {
+	case *ast.Ident:
+		d.do(x)
+	case *ast.ArrayType:
+		if id, is := depoint(x.Elt).(*ast.Ident); is {
+			d.do(id)
+		}
+	case *ast.MapType:
+		if id, is := depoint(x.Key).(*ast.Ident); is {
+			d.do(id)
+		}
+		if id, is := depoint(x.Value).(*ast.Ident); is {
+			d.do(id)
+		}
+	}
+}
+
+func (d prefixmod) do(n *ast.Ident) {
+	if n.Name != d.str {
+		n.Name = strings.TrimPrefix(n.Name, d.str)
+	} else if d.base != "" {
+		n.Name = d.base
+	}
+}