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#define _pstrOf(a) ((pstr){.v=_strDynMem(a), .sz=_strDynSz(a)})
#define _array(t) struct {t* v; size_t sz;}
typedef _array(char) pstr;
#define _pstrLit(a) ((pstr){.v=(a),.sz=sizeof(a)-1})
#define _drop(x) ({ \
if (x.v) { \
_free (x.v); \
x.v = nullptr; \
x.sz = 0; \
} \
})
#define _new(T, n) ((T){ \
.v = _alloc( typeof( ((typeof(T)) {}).v ), n), \
.sz = n, \
})
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#define _pstrOf(a) ((pstr){.v=_strDynMem(a), .sz=_strDynSz(a)})
#define _array(t) struct {t* v; size_t sz;}
typedef _array(char) pstr;
#define _pstrLit(a) ((pstr){.v=(a),.sz=sizeof(a)-1})
#define _drop(x) { \
if (x.v) { \
_free (x.v); \
x.v = nullptr; \
x.sz = 0; \
} \
}
#define _new(T, n) ((T){ \
.v = _alloc( typeof( *((typeof(T)) {}).v ), n), \
.sz = n, \
})
static inline pstr
pstrDup(pstr p) {
if (p.v == nullptr) return p;
if (p.sz == 0) p.sz = strlen(p.v);
auto n = _new(pstr, p.sz + 1);
memcpy(n.v, p.v, p.sz);
n.v[p.sz] = 0;
n.sz = p.sz;
return n;
}
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