diff options
Diffstat (limited to 'apps/interpreters/bas/value.h')
| -rw-r--r-- | apps/interpreters/bas/value.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/apps/interpreters/bas/value.h b/apps/interpreters/bas/value.h new file mode 100644 index 000000000..dbcaaff2d --- /dev/null +++ b/apps/interpreters/bas/value.h @@ -0,0 +1,99 @@ +#ifndef VALUE_H +#define VALUE_H + +#include "str.h" + +enum ValueType +{ + V_ERROR=1, + V_INTEGER, + V_NIL, + V_REAL, + V_STRING, + V_VOID +}; + +struct Value +{ + enum ValueType type; + union + { + /* V_ERROR */ struct { char *msg; long int code; } error; + /* V_INTEGER */ long int integer; + /* V_NIL */ + /* V_REAL */ double real; + /* V_STRING */ struct String string; + /* V_VOID */ + } u; +}; + +extern const enum ValueType Value_commonType[V_VOID+1][V_VOID+1]; + +#define VALUE_NEW_INTEGER(this,n) ((this)->type=V_INTEGER,(this)->u.integer=(n)) +#define VALUE_NEW_REAL(this,n) ((this)->type=V_REAL,(this)->u.real=(n)) +#define VALUE_RETYPE(v,t) ((v)->type==(t) ? (v) : Value_retype(v,t)) +#define VALUE_DESTROY(this) assert((this)!=(struct Value*)0); \ + switch ((this)->type) \ + { \ + case V_ERROR: free((this)->u.error.msg); break; \ + case V_INTEGER: break; \ + case V_NIL: break; \ + case V_REAL: break; \ + case V_STRING: String_destroy(&(this)->u.string); break; \ + case V_VOID: break; \ + default: assert(0); \ + } \ + (this)->type=0; + + +#ifndef HAVE_LRINT +extern long int lrint(double d); +#endif +extern double Value_trunc(double d); +extern double Value_round(double d); +extern long int Value_toi(double d, int *overflow); +extern long int Value_vali(const char *s, char **end, int *overflow); +extern double Value_vald(const char *s, char **end, int *overflow); + +extern struct Value *Value_new_NIL(struct Value *this); +extern struct Value *Value_new_ERROR(struct Value *this, int code, const char *error, ...); +extern struct Value *Value_new_INTEGER(struct Value *this, int n); +extern struct Value *Value_new_REAL(struct Value *this, double n); +extern struct Value *Value_new_STRING(struct Value *this); +extern struct Value *Value_new_VOID(struct Value *this); +extern struct Value *Value_new_null(struct Value *this, enum ValueType type); +extern int Value_isNull(const struct Value *this); +extern void Value_destroy(struct Value *this); +extern void Value_errorPrefix(struct Value *this, const char *prefix); +extern void Value_errorSuffix(struct Value *this, const char *suffix); +extern struct Value *Value_new_typeError(struct Value *this, enum ValueType t1, enum ValueType t2); +extern struct Value *Value_retype(struct Value *this, enum ValueType type); +extern struct Value *Value_clone(struct Value *this, const struct Value *original); +extern struct Value *Value_uplus(struct Value *this, int calc); +extern struct Value *Value_uneg(struct Value *this, int calc); +extern struct Value *Value_unot(struct Value *this, int calc); +extern struct Value *Value_add(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_sub(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_mult(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_div(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_idiv(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_mod(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_pow(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_and(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_or(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_xor(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_eqv(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_imp(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_lt(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_le(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_eq(struct Value *this, struct Value *s, int calc); +extern struct Value *Value_ge(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_gt(struct Value *this, struct Value *x, int calc); +extern struct Value *Value_ne(struct Value *this, struct Value *x, int calc); +extern int Value_exitFor(struct Value *this, struct Value *limit, struct Value *step); +extern struct String *Value_toString(struct Value *this, struct String *s, char pad, int headingsign, size_t width, int commas, int dollar, int dollarleft, int precision, int exponent, int trailingsign); +extern struct Value *Value_toStringUsing(struct Value *this, struct String *s, struct String *using, size_t *usingpos); +extern struct String *Value_toWrite(struct Value *this, struct String *s); +extern struct Value *Value_nullValue(enum ValueType type); + +#endif |