71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
/* SHS: Syntactically Homogeneous Shell
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* Copyright (C) 2019 Aidan Hahn
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package shs
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type Operation func(*Token) *Token
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type Function struct {
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function Operation
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timesCalled int
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args int
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}
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type FuncTable map[string]*Function
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var (
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GlobalFuncTable *FuncTable
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)
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// TODO: Currently only checks arg list length
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func ParseFunction(target *Function, args *Token) bool {
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// HANDLE EXEC
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if target.args < 0 {
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return true
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}
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i := target.args
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for iter := &args; *iter != nil; iter = &((*iter).next) {
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i -= 1
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}
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if i != 0 {
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// log error here?
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return false
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}
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return true
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}
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func CallFunction(target *Function, args *Token) *Token {
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if !ParseFunction(target, args) {
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return args
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}
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target.timesCalled += 1
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return target.function(args)
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}
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func GetFunction(arg string) *Function {
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target, ok := (*GlobalFuncTable)[arg]
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if !ok {
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// TODO: hook into stdlib exec call
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;
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}
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return target
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}
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