PgfUnmarshaller now mimics a C++ class. Allows for keeping state

This commit is contained in:
krangelov
2021-08-13 18:14:56 +02:00
parent 08bcd2f0b5
commit 221f0b7853
4 changed files with 113 additions and 91 deletions

View File

@@ -125,7 +125,7 @@ struct PgfPGF : DB {
{ u = unmarshaller; };
PGF_INTERNAL_DECL ~PgfPGF()
{ u->free_me(u); };
{ u->free_me(); };
PgfUnmarshaller *u;
};

View File

@@ -76,26 +76,52 @@ typedef struct {
* actually be a stable pointer, while for Python that would be
* a PyObject pointer.
*/
#ifdef __cplusplus
typedef struct PgfUnmarshaller PgfUnmarshaller;
struct PgfUnmarshaller {
uintptr_t (*eabs)(PgfBindType btype, PgfText *name, uintptr_t body);
uintptr_t (*eapp)(uintptr_t fun, uintptr_t arg);
uintptr_t (*elit)(uintptr_t lit);
uintptr_t (*emeta)(PgfMetaId meta);
uintptr_t (*efun)(PgfText *name);
uintptr_t (*evar)(int index);
uintptr_t (*etyped)(uintptr_t expr, uintptr_t typ);
uintptr_t (*eimplarg)(uintptr_t expr);
uintptr_t (*lint)(int v);
uintptr_t (*lflt)(double v);
uintptr_t (*lstr)(PgfText *v);
uintptr_t (*dtyp)(int n_hypos, PgfTypeHypo *hypos,
virtual uintptr_t eabs(PgfBindType btype, PgfText *name, uintptr_t body)=0;
virtual uintptr_t eapp(uintptr_t fun, uintptr_t arg)=0;
virtual uintptr_t elit(uintptr_t lit)=0;
virtual uintptr_t emeta(PgfMetaId meta)=0;
virtual uintptr_t efun(PgfText *name)=0;
virtual uintptr_t evar(int index)=0;
virtual uintptr_t etyped(uintptr_t expr, uintptr_t typ)=0;
virtual uintptr_t eimplarg(uintptr_t expr)=0;
virtual uintptr_t lint(int v)=0;
virtual uintptr_t lflt(double v)=0;
virtual uintptr_t lstr(PgfText *v)=0;
virtual uintptr_t dtyp(int n_hypos, PgfTypeHypo *hypos,
PgfText *cat,
int n_exprs, uintptr_t *exprs)=0;
virtual void free_ref(uintptr_t x)=0;
virtual void free_me()=0;
};
#else
typedef struct PgfUnmarshaller PgfUnmarshaller;
typedef struct PgfUnmarshallerVtbl PgfUnmarshallerVtbl;
struct PgfUnmarshallerVtbl {
uintptr_t (*eabs)(PgfUnmarshaller *this, PgfBindType btype, PgfText *name, uintptr_t body);
uintptr_t (*eapp)(PgfUnmarshaller *this, uintptr_t fun, uintptr_t arg);
uintptr_t (*elit)(PgfUnmarshaller *this, uintptr_t lit);
uintptr_t (*emeta)(PgfUnmarshaller *this, PgfMetaId meta);
uintptr_t (*efun)(PgfUnmarshaller *this, PgfText *name);
uintptr_t (*evar)(PgfUnmarshaller *this, int index);
uintptr_t (*etyped)(PgfUnmarshaller *this, uintptr_t expr, uintptr_t typ);
uintptr_t (*eimplarg)(PgfUnmarshaller *this, uintptr_t expr);
uintptr_t (*lint)(PgfUnmarshaller *this, int v);
uintptr_t (*lflt)(PgfUnmarshaller *this, double v);
uintptr_t (*lstr)(PgfUnmarshaller *this, PgfText *v);
uintptr_t (*dtyp)(PgfUnmarshaller *this,
int n_hypos, PgfTypeHypo *hypos,
PgfText *cat,
int n_exprs, uintptr_t *exprs);
void (*free_ref)(uintptr_t x);
void (*free_me)(PgfUnmarshaller *unmarshaller);
void (*free_ref)(PgfUnmarshaller *this, uintptr_t x);
void (*free_me)(PgfUnmarshaller *this);
};
struct PgfUnmarshaller {
PgfUnmarshallerVtbl *vtbl;
};
#endif
typedef float prob_t;
typedef struct PgfPGF PgfPGF;