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| 1 | #include <iostream> | |
| 2 | #include <cmath> | |
| 3 | ||
| 4 | #include "expression.h" | |
| 5 | ||
| 6 | Expression::Expression() | |
| 7 | {
| |
| 8 | saPile = new std::stack<int>(); | |
| 9 | } | |
| 10 | ||
| 11 | ||
| 12 | Expression::~Expression() | |
| 13 | {
| |
| 14 | delete saPile; | |
| 15 | } | |
| 16 | ||
| 17 | ||
| 18 | int Expression::chiffresEnNombre(std::vector<int>* unTab) | |
| 19 | {
| |
| 20 | int i=0, n=0; | |
| 21 | ||
| 22 | for (std::vector<int>::iterator it = unTab->begin(); it != unTab->end(); it++, i++) | |
| 23 | {
| |
| 24 | n += (*it) * pow(10, unTab->size() - i - 1); | |
| 25 | } | |
| 26 | ||
| 27 | return n; | |
| 28 | - | saPile->push(conversionCharEnInt(*it)); |
| 28 | + | |
| 29 | - | //std::cout << "Empile: " << saPile->top() << std::endl; |
| 29 | + | |
| 30 | ||
| 31 | int Expression::evaluer(std::vector<char>* unTab) | |
| 32 | {
| |
| 33 | - | saPile->push(traiterOperation(*it)); |
| 33 | + | |
| 34 | - | //std::cout << "Empile: " << saPile->top() << std::endl; |
| 34 | + | |
| 35 | saPile->pop(); | |
| 36 | } | |
| 37 | ||
| 38 | - | if (saPile->size() > 1) throw 3; |
| 38 | + | std::vector<int>* leTabChiffres = new std::vector<int>(); |
| 39 | ||
| 40 | for (std::vector<char>::iterator it = unTab->begin(); it != unTab->end(); it++) | |
| 41 | {
| |
| 42 | if ((*it) >= '0' && (*it) <= '9') | |
| 43 | {
| |
| 44 | leTabChiffres->push_back(conversionCharEnInt(*it)); | |
| 45 | } | |
| 46 | else | |
| 47 | {
| |
| 48 | if (!leTabChiffres->empty()) | |
| 49 | {
| |
| 50 | saPile->push(chiffresEnNombre(leTabChiffres)); | |
| 51 | //std::cout << "Empile: " << saPile->top() << std::endl; | |
| 52 | leTabChiffres->resize(0); | |
| 53 | } | |
| 54 | ||
| 55 | if ((*it) == ' ') | |
| 56 | {
| |
| 57 | continue; | |
| 58 | } | |
| 59 | else | |
| 60 | {
| |
| 61 | saPile->push(traiterOperation(*it)); | |
| 62 | //std::cout << "Empile: " << saPile->top() << std::endl; | |
| 63 | } | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| 67 | if (!leTabChiffres->empty()) | |
| 68 | {
| |
| 69 | saPile->push(chiffresEnNombre(leTabChiffres)); | |
| 70 | } | |
| 71 | delete leTabChiffres; | |
| 72 | ||
| 73 | if (saPile->size() != 1) throw 3; | |
| 74 | return saPile->top(); | |
| 75 | } | |
| 76 | ||
| 77 | ||
| 78 | int Expression::conversionCharEnInt(char unChar) | |
| 79 | {
| |
| 80 | return unChar - '0'; | |
| 81 | } | |
| 82 | ||
| 83 | ||
| 84 | int Expression::traiterOperation(char uneOp) | |
| 85 | {
| |
| 86 | int a, b; | |
| 87 | ||
| 88 | if (saPile->empty()) throw(2); | |
| 89 | b = saPile->top(); | |
| 90 | saPile->pop(); | |
| 91 | //std::cout << "Dépile: " << b << std::endl; | |
| 92 | ||
| 93 | if (saPile->empty()) throw(2); | |
| 94 | a = saPile->top(); | |
| 95 | saPile->pop(); | |
| 96 | //std::cout << "Dépile: " << a << std::endl; | |
| 97 | ||
| 98 | switch (uneOp) | |
| 99 | {
| |
| 100 | case '+': | |
| 101 | return a+b; | |
| 102 | break; | |
| 103 | case '-': | |
| 104 | return a-b; | |
| 105 | - | |
| 105 | + | |
| 106 | - | |
| 106 | + | |
| 107 | return a*b; | |
| 108 | break; | |
| 109 | case '/': | |
| 110 | if (b == 0) throw 0; | |
| 111 | return a/b; | |
| 112 | break; | |
| 113 | case '%': | |
| 114 | if (b == 0) throw 0; | |
| 115 | return a%b; | |
| 116 | break; | |
| 117 | case '<': | |
| 118 | return a<b; | |
| 119 | break; | |
| 120 | case '>': | |
| 121 | return a>b; | |
| 122 | break; | |
| 123 | case '=': | |
| 124 | return a==b; | |
| 125 | break; | |
| 126 | case '!': | |
| 127 | return a!=b; | |
| 128 | break; | |
| 129 | case '&': | |
| 130 | return a&&b; | |
| 131 | break; | |
| 132 | case '|': | |
| 133 | return a||b; | |
| 134 | break; | |
| 135 | } | |
| 136 | ||
| 137 | throw 1; | |
| 138 | return 0; | |
| 139 | } | |
| 140 | ||
| 141 | // EOF |