Enum DbfCode 

#[repr(i16)]
pub enum DbfCode {
    String = 0,
    Char = 1,
    UChar = 2,
    Short = 3,
    UShort = 4,
    Long = 5,
    ULong = 6,
    Int64 = 7,
    UInt64 = 8,
    Float = 9,
    Double = 10,
    Enum = 11,
    Menu = 12,
    Device = 13,
    Inlink = 14,
    Outlink = 15,
    Fwdlink = 16,
    NoAccess = 17,
}

C’s dbStatic dbfType code — the DBF_* token a .dbd declares and the number dbStaticLib stores, exports and prints (dbFldTypes.h:24-43 @R7.0.10).

A SECOND fact about a field, not a renumbering of DbFieldType: that enum’s discriminants are the CA wire codes and are load-bearing on the protocol, whereas these are dbStatic’s own indices, and the two orders disagree from the second entry on (DBF_CHAR is 1 here and DBR_SHORT is 1 there). Anything that prints C’s %d type number — dba’s Field Type row, dbStatic’s dbDumpField — needs this one.

It also has six codes DbFieldType cannot express at all: a served type is one of twelve scalars, while a declaration can additionally be MENU, DEVICE, the three link kinds, or NOACCESS. That is why super::super::server::record::FieldDesc::declared_dbf carries this type rather than deriving it — the collapse is one-way.

Variants

String = 0

DBF_STRING (0).

Char = 1

DBF_CHAR (1) — epicsInt8.

UChar = 2

DBF_UCHAR (2) — epicsUInt8.

Short = 3

DBF_SHORT (3).

UShort = 4

DBF_USHORT (4).

Long = 5

DBF_LONG (5).

ULong = 6

DBF_ULONG (6).

Int64 = 7

DBF_INT64 (7).

UInt64 = 8

DBF_UINT64 (8).

Float = 9

DBF_FLOAT (9).

Double = 10

DBF_DOUBLE (10).

Enum = 11

DBF_ENUM (11).

Menu = 12

DBF_MENU (12) — served as an enum, declared as a menu.

Device = 13

DBF_DEVICE (13) — the DTYP field, served as an enum.

Inlink = 14

DBF_INLINK (14).

Outlink = 15

DBF_OUTLINK (15).

Fwdlink = 16

DBF_FWDLINK (16).

NoAccess = 17

DBF_NOACCESS (17) — a C-internal with no dbStatic representation.

Implementations

impl DbfCode

pub const fn name(self) -> &'static str

The token without its DBF_ prefix — C’s dbf[] (dbTest.c:76-81), which is pamapdbfType’s strvalue (dbFldTypes.h:51-70) with that prefix stripped. dba prints DBF_%s around it and dbStatic prints the full name, so one table serves both.

pub const fn dbr_code(self) -> DbfCode

C’s mapDBFToDBR (dbAccess.c:76-95) — the DBR code dbEntryToAddr stores in paddr->dbr_field_type (:639), which is what a client asking for this field’s native type is answered with.

DBR_* here is dbFldTypes.h:75-90’s numbering, where every DBR_x is #defined to its DBF_x, so the map is a projection of this enum onto itself and needs no second type: it collapses MENU and DEVICE onto ENUM and the three link types onto STRING, and is the identity on the other thirteen.

NOT the CA wire type. That numbering is the older, narrower db_access.h one carried by DbFieldType’s own discriminants and reached through DbFieldType::ca_wire_type; the two disagree on every code above DBR_SHORT.

Trait Implementations

impl Clone for DbfCode

fn clone(&self) -> DbfCode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DbfCode

impl Debug for DbfCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for DbfCode

impl Hash for DbfCode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DbfCode

fn cmp(&self, other: &DbfCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for DbfCode

fn eq(&self, other: &DbfCode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for DbfCode

fn partial_cmp(&self, other: &DbfCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for DbfCode