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#ifndef TERM_H
#define TERM_H
typedef enum { INV, ABS, APP, VAR } term_type;
struct term {
term_type type;
union {
struct {
int name;
struct term *term;
} abs;
struct {
struct term *lhs;
struct term *rhs;
} app;
struct {
int name;
enum { BRUIJN_INDEX, BARENDREGT_VARIABLE } type;
} var;
} u;
};
struct term *new_term(term_type type);
void print_term(struct term *term);
void free_term(struct term *term);
#endif
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