41 lines
758 B
Go
41 lines
758 B
Go
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
|
|
// All rights reserved.
|
|
|
|
// operator-plugin.go
|
|
package expr
|
|
|
|
import (
|
|
"git.portale-stac.it/go-pkg/expr/kern"
|
|
)
|
|
|
|
//-------- plugin term
|
|
|
|
func newPluginTerm(tk *Token) (inst *term) {
|
|
return &term{
|
|
tk: *tk,
|
|
children: make([]*term, 0, 1),
|
|
position: posPrefix,
|
|
priority: priSign,
|
|
evalFunc: evalPlugin,
|
|
}
|
|
}
|
|
|
|
func evalPlugin(ctx kern.ExprContext, opTerm *term) (v any, err error) {
|
|
var childValue any
|
|
var count int
|
|
|
|
if childValue, err = opTerm.evalPrefix(ctx); err != nil {
|
|
return
|
|
}
|
|
|
|
if count, err = importPluginFromSearchPath(ctx, childValue); err == nil {
|
|
v = int64(count)
|
|
}
|
|
return
|
|
}
|
|
|
|
// init
|
|
func init() {
|
|
registerTermConstructor(SymKwPlugin, newPluginTerm)
|
|
}
|