diff options
1 files changed, 0 insertions, 68 deletions
| -rw-r--r-- | homework/81489/bf_interpreter/main.cpp | 68 |
diff --git a/homework/81489/bf_interpreter/main.cpp b/homework/81489/bf_interpreter/main.cpp deleted file mode 100644 index fc065aa..0000000 --- a/homework/81489/bf_interpreter/main.cpp +++ /dev/null @@ -1,68 +0,0 @@ -#include <stdio.h> -#include <stack> -#include <unistd.h> -#include <stdlib.h> -#include <fcntl.h> -#include <string> - -using namespace std; - -class Brainfuck { - private: - static const int init_length = 1024; - char *tape; - stack<int> loop_stack; - char *tape_pos; - - public: - Brainfuck() : tape(new char[init_length]), tape_pos(tape + (init_length / 2)) {} - Brainfuck(int _length): tape(new char [_length]), tape_pos(tape + (_length / 2)) {} - - void interpret(string& code) { - for (int i = 0; code[i]; ++i) { - switch (code[i]) { - case '\n': break; - case '<': --(this->tape_pos); break; - case '>': ++(this->tape_pos); break; - case '-': -- *(this->tape_pos); break; - case '+': ++ *(this->tape_pos); break; - case '[': this->loop_stack.push(i); break; - case ']': - if (*(this->tape_pos)) { - i = this->loop_stack.top(); - } else { - this->loop_stack.pop(); - } - break; - case '.': putchar(*this->tape_pos); break; - case ',': *(this->tape_pos) = (char)getchar(); - default: break; - } - } - } -}; - -int main(int argc, char *argv[]) -{ - Brainfuck bf; - if (argc != 2) { - printf("Usage: <executable> <text_file_name>\n"); - return 1; - } - - int fd; - if (!(fd = open(argv[1], O_RDONLY))) { - printf("Error opening file \"%s\"\n", argv[1]); - return 1; - }; - - char buff[128]; - string code; - while (int lth = read(fd, buff, 128)) { - buff[lth] = '\0'; - code += buff; - } - - bf.interpret(code); - return 0; -}
\ No newline at end of file |