Module record_fields 

IOC/QSRV-style record field access.

Serves <pvname>.<FIELD> (and the obsolete <pvname>.<FIELD>$ long-string form) as independent read-only channels, mimicking IOC field-access semantics so tools such as the EPICS Archiver Appliance can fetch record metadata (RTYP, NAME, DESC, dbCommon fields, …).

Ported from the p4pillon RecordProvider / DynamicRecordFields design (branch 50-access-to-ioc-fields).

Structs

FieldRef

A parsed <base>.<FIELD>[$] channel-name reference.

RecordFieldSource

A read-only Source serving <pvname>.<FIELD> channels for any RecordFieldProvider.

Enums

FieldKind

Scalar type of a record field, per dbCommon.dbd semantics.

Constants

LINK_FIELDS

The record fields whose value is a link, and which therefore render through render_link_text rather than as the raw .db text.

Functions

canonical_link_text

Re-render the raw .db text of a link field in render_link_text’s canonical form.

dbcommon_default

Look up the dbCommon default for field, if it is a common field.

dbcommon_default_value

The dbCommon default for field, already parsed to its declared type.

field_value

Resolve the value of field for record.

is_link_field

Whether field is one of LINK_FIELDS.

mdel_of

The record’s MDEL monitor deadband (0.0 when absent or unparsable).

parse_field_ref

Split a channel name into a FieldRef on its last ..

payload_for

Build the wire payload for a resolved field reference on a record.

payload_for_value

Wrap a resolved field value as a wire payload.

record_type_name

The .db record-type name for a RecordType (what RTYP reports).

render_link_text

Render a link the way EPICS Base prints one: the target, an optional .FIELD, then both modifiers, however terse the .db was.