make errNoRows and errTooManyRows private to package

Author: eloff

internal/codegen/golang/imports.go

@@ -124,6 +124,7 @@ func (i *importer) dbImports() fileImports {
 	}
 	std := []ImportSpec{
 		{Path: "runtime"},
+		{Path: "context"},
 	}
 
 	sqlpkg := parseDriver(i.Options.SqlPackage)

internal/codegen/golang/query.go

@@ -308,7 +308,7 @@ func (q *Query) ReceiverType() string {
 	if q.IsReadOnly() {
 		return "Queries"
 	}
-	return "WriteTx"
+	return "WriteTxn"
 }
 
 func (q *Query) hasRetType() bool {

internal/codegen/golang/templates/sqlite/dbCode.tmpl

@@ -1,14 +1,15 @@
 {{define "dbCodeTemplateStd"}}
 
 type Queries struct {
+    Ctx context.Context
     conn *sqlite.Conn
     pin runtime.Pinner
     {{- range .ReadQueries }}
     {{.FieldName}} {{.MethodName}}Stmt
     {{- end}}
 }
 
-type WriteTx struct {
+type WriteTxn struct {
     Queries
     finish func(*error)
     {{- range .WriteQueries }}
@@ -40,7 +41,7 @@ func (q *Queries) Close() *lib.Error {
     return firstErr
 }
 
-func (txn *WriteTx) Close() *lib.Error {
+func (txn *WriteTxn) Close() *lib.Error {
     var err, firstErr *lib.Error
     {{- range .WriteQueries }}
     txn.{{.FieldName}}.Close()

internal/codegen/golang/templates/sqlite/queryCode.tmpl

@@ -95,9 +95,9 @@ func (q *{{ .ReceiverType }}) {{.MethodName}}({{ .Arg.Pair }}) (result {{.Ret.De
         return
     }
     if !ok {
-        err = ErrNoRows
+        err = errNoRows
     } else if r.Next() {
-        err = ErrTooManyRows
+        err = errTooManyRows
     } else {
         result = r.Row
     }