github.com/chapsuk/go-ethereum@v1.8.12-0.20180615081455-574378edb50c/mobile/primitives.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // Contains various wrappers for primitive types.
    18  
    19  package geth
    20  
    21  import (
    22  	"errors"
    23  	"fmt"
    24  )
    25  
    26  // Strings represents s slice of strs.
    27  type Strings struct{ strs []string }
    28  
    29  // Size returns the number of strs in the slice.
    30  func (s *Strings) Size() int {
    31  	return len(s.strs)
    32  }
    33  
    34  // Get returns the string at the given index from the slice.
    35  func (s *Strings) Get(index int) (str string, _ error) {
    36  	if index < 0 || index >= len(s.strs) {
    37  		return "", errors.New("index out of bounds")
    38  	}
    39  	return s.strs[index], nil
    40  }
    41  
    42  // Set sets the string at the given index in the slice.
    43  func (s *Strings) Set(index int, str string) error {
    44  	if index < 0 || index >= len(s.strs) {
    45  		return errors.New("index out of bounds")
    46  	}
    47  	s.strs[index] = str
    48  	return nil
    49  }
    50  
    51  // String implements the Stringer interface.
    52  func (s *Strings) String() string {
    53  	return fmt.Sprintf("%v", s.strs)
    54  }