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1 files changed, 0 insertions, 90 deletions
| -rw-r--r-- | homework/81270/brainf-interpret/Interpreter.cpp | 90 |
diff --git a/homework/81270/brainf-interpret/Interpreter.cpp b/homework/81270/brainf-interpret/Interpreter.cpp deleted file mode 100644 index ebca77b..0000000 --- a/homework/81270/brainf-interpret/Interpreter.cpp +++ /dev/null @@ -1,90 +0,0 @@ -// -// Created by bmestanov on 15.11.18. -// - -#define TAPE_SIZE 65536 -#define STACK_SIZE 8192 - -#include <fstream> -#include <iostream> - -void failIf(bool condition, const char *message) { - if (condition) { - std::cerr << message; - exit(1); - } -} - -int main(int argc, char **argv) { - argc--; - argv++; - char memory[TAPE_SIZE] = {0}; - char *pp = memory; // program pointer - long stack[STACK_SIZE]; - int sp = 0; // stack pointer - - failIf(!argv[0], "No file provided"); - - std::ifstream file; - file.open(argv[0]); - - failIf(!file, "Error opening file"); - - while (!file.eof()) { - auto symbol = static_cast<char>(file.get()); - switch (symbol) { - case '>': { - // Allow memory wrap - pp = memory + (pp - memory + 1) % TAPE_SIZE; - break; - } - case '<': { - pp = memory + (pp - memory - 1) % TAPE_SIZE; - break; - } - case '+': { - (*pp)++; - break; - } - case '-': { - (*pp)--; - break; - } - case '.': { - std::putchar(*pp); - break; - } - case ',': { - *pp = static_cast<char>(std::getchar()); - break; - } - case '[': { - if (*pp) { - failIf(sp == STACK_SIZE, "Stack overflow"); - stack[sp++] = file.tellg(); - } else { - long move = 1; - while (move > 0) { - auto next = static_cast<char>(file.get()); - if (next == '[') move++; - if (next == ']') move--; - if (file.eof()) failIf(true, "Invalid syntax"); - } - } - break; - } - case ']': { - failIf(sp == 0, "Invalid syntax"); - if (*pp) { - long top = stack[sp - 1]; - file.seekg(top); - } else { - sp--; - } - } - default:; - } - } - - return 0; -}
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