Files
mgmt/lang/funcs/simple/answer_func.go
James Shubin b0911c6d70 lang: funcs: simple: Don't block on simple, pure, static functions
I forgot to handle the special case of a function using this API that
received no inputs. It was waiting for the first input to come in, and
as a result was never producing any output.

Remember that functions like this should *almost* be thought of as
constants of the system. You would expect their output to never change
during the lifetime of a particular program invocation.
2018-02-22 19:26:18 -05:00

35 lines
1.2 KiB
Go

// Mgmt
// Copyright (C) 2013-2018+ James Shubin and the project contributors
// Written by James Shubin <james@shubin.ca> and the project contributors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package simple // TODO: should this be in its own individual package?
import (
"github.com/purpleidea/mgmt/lang/types"
)
// Answer is the Answer to Life, the Universe and Everything.
const Answer = 42
func init() {
Register("answer", &types.FuncValue{
T: types.NewType("func() int"),
V: func([]types.Value) (types.Value, error) {
return &types.IntValue{V: Answer}, nil
},
})
}