45 lines
1.3 KiB
Go
45 lines
1.3 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 ast
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type VarTable *map[string]*Token
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func GetVar(arg string, vt VarTable) *Token {
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val, ok := (*vt)[arg]
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if !ok {
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return nil
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}
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return val
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}
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// Library represents variables defined in inner scope
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// It is assumed library is ordered from innermost scope to outermost scope
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func GetVarFromTables(arg string, library []VarTable) *Token {
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var res *Token
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res = nil
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for i := 0; i < len(library); i += 1 {
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res = GetVar(arg, library[i])
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if res != nil {
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// TODO: Log scope res was found in?
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break
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}
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}
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return res
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}
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