37 lines
589 B
C
37 lines
589 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include "evaluator.h"
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#include "reader.h"
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#define BUFFER_SIZE 128U
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static memory_pool_t pool;
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static char buffer[BUFFER_SIZE];
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static bool step_repl(void)
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{
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init_memory_pool(&pool);
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const int len = read_line(getchar, buffer, BUFFER_SIZE);
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if (len < 0)
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return false;
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const expression_t *e = read_expression(&pool, buffer, len);
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if (NULL == e) {
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puts("Invalid expression\n");
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return true;
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}
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const int result = evaluate(e);
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printf("%d\n", result);
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return true;
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}
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int main(void)
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{
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while (step_repl())
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;
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return EXIT_SUCCESS;
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}
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