lint: fix several lll, wrapcheck, and copy-paste errors

pkg/codegen/modelgenerate/ast_helpers.go

@@ -2,6 +2,7 @@ package modelgenerate
 
 import (
 	"bytes"
+	"fmt"
 	"go/ast"
 	"go/parser"
 	"go/printer"
@@ -65,14 +66,14 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 	var buf bytes.Buffer
 	fset := token.NewFileSet()
 	if err := printer.Fprint(&buf, fset, file); err != nil {
-		return err
+		return fmt.Errorf("initial pretty-printing to get positioning: %w", err)
 	}
 
 	// Re-parse to get real positions (ParseComments preserves doc comments)
 	fset = token.NewFileSet()
 	parsed, err := parser.ParseFile(fset, "", buf.Bytes(), parser.ParseComments)
 	if err != nil {
-		return err
+		return fmt.Errorf("re-parsing pretty-print: %w", err)
 	}
 
 	// Convert the tree-of-nodes into a slice-of-nodes
@@ -98,8 +99,8 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 		origNodes := collectNodes(file)
 		reparsedNodes := collectNodes(parsed)
 		for i, orig := range origNodes {
-			text, ok := TrailingComments[orig]
-			if !ok {
+			text, isOk := TrailingComments[orig]
+			if !isOk {
 				continue
 			}
 			reparsed := reparsedNodes[i]
@@ -110,40 +111,43 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 	}
 
 	extractCommentMarker := func(stmt ast.Stmt) (string, bool) {
-		expr, ok := stmt.(*ast.ExprStmt)
-		if !ok {
+		expr, isOk := stmt.(*ast.ExprStmt)
+		if !isOk {
 			return "", false
 		}
-		call, ok := expr.X.(*ast.CallExpr)
-		if !ok {
+		call, isOk := expr.X.(*ast.CallExpr)
+		if !isOk {
 			return "", false
 		}
-		ident, ok := call.Fun.(*ast.Ident)
-		if !ok || ident.Name != commentMarker {
+		ident, isOk := call.Fun.(*ast.Ident)
+		if !isOk || ident.Name != commentMarker {
+			return "", false
+		}
+		lit, isOk := call.Args[0].(*ast.BasicLit)
+		if !isOk {
 			return "", false
 		}
-		lit := call.Args[0].(*ast.BasicLit)
 		return lit.Value[1 : len(lit.Value)-1], true
 	}
 
 	isBlankLineMarker := func(stmt ast.Stmt) bool {
-		expr, ok := stmt.(*ast.ExprStmt)
-		if !ok {
+		expr, isOk := stmt.(*ast.ExprStmt)
+		if !isOk {
 			return false
 		}
-		call, ok := expr.X.(*ast.CallExpr)
-		if !ok {
+		call, isOk := expr.X.(*ast.CallExpr)
+		if !isOk {
 			return false
 		}
-		ident, ok := call.Fun.(*ast.Ident)
-		return ok && ident.Name == blankLineMarker
+		ident, isOk := call.Fun.(*ast.Ident)
+		return isOk && ident.Name == blankLineMarker
 	}
 
 	// Convert comment and blank-line markers
 	ast.Inspect(parsed, func(n ast.Node) bool {
 		// We only care about Block nodes
-		block, ok := n.(*ast.BlockStmt)
-		if !ok {
+		block, isOk := n.(*ast.BlockStmt)
+		if !isOk {
 			return true
 		}
 
@@ -151,7 +155,7 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 		// in the block statement's body with actual ones
 		filtered := block.List[:0]
 		for _, stmt := range block.List {
-			if text, ok := extractCommentMarker(stmt); ok {
+			if text, isOk := extractCommentMarker(stmt); isOk {
 				// If it's a comment, add it to the fileset's list of Comments
 				parsed.Comments = append(parsed.Comments, &ast.CommentGroup{
 					List: []*ast.Comment{{Slash: stmt.Pos(), Text: "// " + text}},
@@ -176,5 +180,9 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 		delete(TrailingComments, k)
 	}
 
-	return printer.Fprint(w, fset, parsed)
+	err = printer.Fprint(w, fset, parsed)
+	if err != nil {
+		return fmt.Errorf("re-pretty-printing: %w", err)
+	}
+	return nil
 }