SHS/stdlib/string.go

/*   SHS: Syntactically Homogeneous Shell
 *   Copyright (C) 2019  Aidan Hahn
 *
 *   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 <https://www.gnu.org/licenses/>.
 */

package stdlib

import (
    "fmt"
    "gitlab.com/whom/shs/ast"
    "gitlab.com/whom/shs/log"
)

func concat(in *ast.Token, vt ast.VarTable, ft ast.FuncTable) *ast.Token {
    in = in.Eval(ft, vt, false)

    var res string
    for i := in; i != nil; i = i.Next {
        if i.Tag == ast.LIST {
            log.Log(log.ERR, "Not concatenating list", "conc")
            log.Log(log.DEBUG, "Try using the expand operator (...)", "conc")
            continue
        }

        res += i.Value()
    }

    t := &ast.Token{Tag: ast.STRING}
    t.Set(res)
    return t
}

func print_str(in *ast.Token, vt ast.VarTable, ft ast.FuncTable) *ast.Token {
    fmt.Println(in.Eval(ft, vt, false))
    return nil
}