Sources/token.cpp

   1 /*
   2  * miniREPL
   3  * https://github.com/vrmiguel/minirepl
   4  *
   5  * Copyright (c) 2020 Vinícius R. Miguel <vinicius.miguel at unifesp.br>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in all
  15  * copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include "Headers/token.h"
  27
  28 std::ostream& operator<<(std::ostream &strm, const Token &tok)
  29 {
  30     string vartype;
  31     switch (tok.var_type)
  32     {
  33         case INTEGER:
  34             vartype = "INTEGER";
  35         break;
  36
  37         case PLUS:
  38             vartype = "PLUS";
  39         break;
  40
  41         case MINUS:
  42             vartype = "MINUS";
  43         break;
  44
  45         case SPACE:
  46             vartype = "SPACE";  // TODO: SPACE is not getting printed
  47             return strm << "Token(" << vartype << ", " << "\' \'" << ")";
  48         break;
  49
  50         case MULT:
  51             vartype = "MULT";
  52         break;
  53
  54         case DIV:
  55             vartype = "DIV";
  56         break;
  57
  58         case EOL:
  59             vartype = "EOL";
  60         break;
  61
  62         case EOFile:
  63             vartype = "EOF";
  64         break;
  65
  66         case STRING:
  67             vartype = "STRING";
  68         break;
  69
  70         default:
  71             vartype = "UNKNOWN";    // Control really shouldn't reach this point
  72         break;
  73     }
  74     return strm << "Token(" << vartype << ", " << tok.var_value << ")";
  75 }
  76
  77 bool operator==(const Token t1, const Token t2)
  78 {
  79     return t1.var_type == t2.var_type && t1.var_value == t2.var_value;
  80 }
  81
  82 bool contains(vector<Token> tokens, Token t)
  83 {
  84     return std::count(tokens.begin(), tokens.end(), t);
  85 }
  86
  87 inline bool is_valid(int var_type)
  88 {
  89     return (var_type > -1) && (var_type < TOKEN_TYPE_COUNT);
  90 }
  91
  92 Token::Token(int var_type, string var_value)
  93 {
  94     if (is_valid(var_type))
  95     {
  96         this->var_type  = var_type;
  97         this->var_value = var_value;
  98     } else {
  99         cerr << "The type" << var_type << "is not valid.";
 100         std::exit(1);
 101     }
 102 }
 103
 104 Token::Token(int var_type, char var_value)
 105 {
 106     if (is_valid(var_type))
 107     {
 108         this->var_type  = var_type;
 109         this->var_value = string(1, var_value);
 110     } else
 111     {
 112         cerr << "The type" << var_type << "is not valid.";
 113         std::exit(1);
 114     }
 115 }