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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include "qpoe.h"
# QP_SIZEOF -- Determine the size in chars of a QPOE datatype. This may
# be one of the special datatypes (user defined record types), or a primitive
# type. In the case of a special type, the REFTYPE flag specifies whether
# the size of the value of the type variable itself (always SZ_CHAR) is to be
# returned, or the size of an *instance* of the special type.
int procedure qp_sizeof (qp, dtype, dsym, reftype)
pointer qp #I QPOE descriptor
int dtype #I datatype code
pointer dsym #I domain descriptor, if type TY_USER
int reftype #I IMMEDIATE (domain itself) or INSTANCEOF
pointer sym
int sizeof()
pointer strefstab()
begin
switch (dtype) {
case TY_MACRO, TY_OPAQUE:
return (SZ_CHAR)
case TY_USER:
# Size of a user defined structure (or the element size of the
# struct definition entry itself).
if (dsym == NULL) { # {...}
return (SZ_CHAR)
} else if (S_DSYM(dsym) == NULL) { # reference is to
if (reftype == IMMEDIATE) # primary domain entry
return (SZ_CHAR)
else
return (S_SZELEM(dsym))
} else { # instance of domain
sym = strefstab (QP_ST(qp), S_DSYM(dsym))
return (S_SZELEM(sym))
}
default:
return (sizeof (dtype))
}
end
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