bfx.h

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#ifndef BFX_H
#define BFX_H
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
 
#ifndef BFX_DEFAULT_INPUT_MAX
#define BFX_DEFAULT_INPUT_MAX 1024
#endif
 
#ifndef BFX_DEFAULT_TAPE_SIZE
#define BFX_DEFAULT_TAPE_SIZE 30000
#endif
 
#ifndef BFX_INITIAL_LOOP_SIZE
#define BFX_INITIAL_LOOP_SIZE 2048
#endif
 
#ifndef BFX_PROCEDURE_SIZE
#define BFX_PROCEDURE_SIZE 128
#endif
 
#ifndef BFX_VERSION
#define BFX_VERSION "unknown"
#endif
 
#ifndef BFX_DEFAULT_LANG
#define BFX_DEFAULT_LANG BFX_LANG_BRAINFUCK
#endif
 
#ifndef BFX_DEFAULT_EOF_BEHAVIOR
#define BFX_DEFAULT_EOF_BEHAVIOR BFX_EOF_BEHAVIOR_ZERO
#endif
 
typedef enum {
    BFX_EOF_BEHAVIOR_ZERO, 
    BFX_EOF_BEHAVIOR_DECREMENT, 
    BFX_EOF_BEHAVIOR_UNCHANGED 
} BFX_EOFBehavior;
 
#define BFX_FLAG_DEBUG                        1 
#define BFX_FLAG_REPL                         2 
#define BFX_FLAG_DISABLE_SPECIAL_INSTRUCTIONS 4 
#define BFX_FLAG_LANG_DATA_FLAGS              8 
#define BFX_FLAG_GRAPHICS                     16 
#define BFX_FLAG_SEPARATE_INPUT_AND_SOURCE                                                         \
    32 
#define BFX_FLAG_DEGREES 64 
 
typedef enum {
    BFX_LANG_UNKNOWN, 
    BFX_LANG_brainfuck, 
    BFX_LANG_brainfork, 
    BFX_LANG_pbrain, 
    BFX_LANG_grin, 
    BFX_LANG_weave 
} BFX_Language;
 
typedef enum {
    BFX_SUCCESS = 0, 
    BFX_STACK_OVERFLOW_ERROR, 
    BFX_STACK_UNDERFLOW_ERROR, 
    BFX_SYNTAX_ERROR, 
    BFX_OUT_OF_MEMORY_ERROR, 
    BFX_RUNTIME_ERROR, 
} BFX_Error;
 
#define BFX_ERROR(s) fprintf(stderr, "libbfx: Error: %s\n", s);
 
#define BFX_IN_DEBUG_MODE(b) ((b).flags & BFX_FLAG_DEBUG)
 
#define BFX_IN_REPL_MODE(b) ((b).flags & BFX_FLAG_REPL)
 
#define BFX_SPECIAL_INSTRUCTIONS_ENABLED(b) (!((b).flags & BFX_FLAG_DISABLE_SPECIAL_INSTRUCTIONS))
 
typedef struct {
    int idx; 
    int line; 
    int line_idx; 
} BFX_FileIndex;
 
typedef struct {
    BFX_FileIndex start; 
    BFX_FileIndex end; 
} BFX_Block;
 
typedef struct {
    uint16_t     flags; 
    bool         receiving; 
    char*        program; 
    size_t       program_len; 
    size_t       program_size; 
    size_t       input_start; 
    size_t       input_ptr; 
    size_t       input_len; 
    uint8_t*     tape; 
    size_t       tape_size; 
    int          ip; 
    int          tp; 
    BFX_Block*   loops; 
    size_t       loops_len; 
    size_t       loops_size; 
    size_t       input_max; 
    int          eof_behavior; 
    BFX_Language lang; 
    void*        lang_data; 
} BFX;
 
void      bfx_free(BFX*);
BFX_Error bfx_run_file(const char*, BFX*);
BFX_Error bfx_run_repl(BFX*);
 
#endif