9 typedef struct Scope Scope;
14 #define NUMBER(G, X) atom_as_expr(create_number_atom(G, X))
15 #define STRING(G, S) atom_as_expr(create_string_atom(G, S, NULL))
16 #define SYMBOL(G, S) atom_as_expr(create_symbol_atom(G, S, NULL))
17 #define NATIVE(G, F, P) atom_as_expr(create_native_atom(G, F, P))
18 #define CONS(G, CAR, CDR) cons_as_expr(create_cons(G, CAR, CDR))
19 #define NIL(G) SYMBOL(G, "nil")
21 #define CAR(O) ((O).cons->car)
22 #define CDR(O) ((O).cons->cdr)
40 struct Expr atom_as_expr(struct Atom *atom);
41 struct Expr cons_as_expr(struct Cons *cons);
42 struct Expr void_expr(void);
44 void destroy_expr(struct Expr expr);
45 void print_expr_as_sexpr(FILE *stream, struct Expr expr);
46 int expr_as_sexpr(struct Expr expr, char *output, size_t n);
48 // TODO(#337): EvalResult does not belong to expr unit
56 typedef struct EvalResult (*NativeFunction)(void *param, Gc *gc, struct Scope *scope, struct Expr args);
77 // TODO(#330): Atom doesn't support floats
78 long int num; // ATOM_NUMBER
79 char *sym; // ATOM_SYMBOL
80 char *str; // ATOM_STRING
81 struct Native native; // ATOM_NATIVE
85 struct Atom *create_number_atom(Gc *gc, long int num);
86 struct Atom *create_string_atom(Gc *gc, const char *str, const char *str_end);
87 struct Atom *create_symbol_atom(Gc *gc, const char *sym, const char *sym_end);
88 struct Atom *create_native_atom(Gc *gc, NativeFunction fun, void *param);
89 void destroy_atom(struct Atom *atom);
90 void print_atom_as_sexpr(FILE *stream, struct Atom *atom);
98 struct Cons *create_cons(Gc *gc, struct Expr car, struct Expr cdr);
99 void destroy_cons(struct Cons *cons);
100 void print_cons_as_sexpr(FILE *stream, struct Cons *cons);