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package eval
import (
"fmt"
"src.elv.sh/pkg/diag"
"src.elv.sh/pkg/eval/vals"
)
// CallHook runs all the functions in the list "hook", with "args".
//
// If "evalCfg" is not specified, the standard files will be used for IO.
//
// TODO: Eventually all callers should supply evalCfg. In general it's not
// correct to use standard files:
//
// - Chdir hooks should use the frame from which the chdir is triggered.
// - Editor lifecycle hooks should use the editor's TTY.
func CallHook(ev *Evaler, evalCfg *EvalCfg, name string, hook vals.List, args ...any) {
if hook.Len() == 0 {
return
}
if evalCfg == nil {
ports, cleanup := PortsFromStdFiles(ev.ValuePrefix())
defer cleanup()
evalCfg = &EvalCfg{Ports: ports}
}
callCfg := CallCfg{Args: args, From: "[hook " + name + "]"}
i := -1
stderr := evalCfg.Ports[2].File
for it := hook.Iterator(); it.HasElem(); it.Next() {
i++
fn, ok := it.Elem().(Callable)
if !ok {
diag.ShowError(stderr, fmt.Errorf("hook %s[%d] must be callable", name, i))
continue
}
err := ev.Call(fn, callCfg, *evalCfg)
if err != nil {
diag.ShowError(stderr, err)
}
}
}
|
