6.3.90.900
3.3.3 mischief/id-table: Dictionaries for Identifiers
| (require mischief/id-table) | package: mischief |
procedure
id : identifier?
Strips the bindings from id and produces an identifier with the same
symbolic name and the same marks.
procedure
(label-identifier=? one two) → boolean?
one : identifier? two : identifier?
Reports whether one and two have the same symbolic name and
marks, regardless of their bindings. Equivalent to:
(bound-identifier=? (label-id-representative one) (label-id-representative two))
procedure
(check-duplicate-label ids) → (or/c identifier? #false)
ids : (listof identifier?)
If any elements of ids are label-identifier=? to each other,
returns one of the duplicates. Otherwise, returns #false.
procedure
(make-label-id-table [init]) → (dict/c identifier? any/c)
init : (dict/c identifier? any/c) = '()
procedure
(make-immutable-label-id-table [init])
→ (dict/c identifier? any/c) init : (dict/c identifier? any/c) = '()
procedure
(make-weak-label-id-table [init]) → (dict/c identifier? any/c)
init : (dict/c identifier? any/c) = '()
Creates a hash table-based dictionary—
procedure
(label-identifier-hash-code id [rec]) → exact-integer?
id : identifier? rec : (-> any/c exact-integer?) = equal-hash-code
Computes a unique hash code for id that is consistent with
label-identifier=?, using rec to compute the hash code for
id’s symbolic name.
procedure
(free-identifier-hash-code id [ rec #:phase phase]) → exact-integer? id : identifier? rec : (-> any/c exact-integer?) = equal-hash-code
phase : (or/c exact-nonnegative-integer? #false) = (syntax-local-phase-level)
Computes a unique hash code for id that is consistent with
free-identifier=? in phase, using rec to compute the
hash code for the symbolic name of id’s binding.
procedure
(bound-identifier-hash-code id [ rec #:phase phase]) → exact-integer? id : identifier? rec : (-> any/c exact-integer?) = equal-hash-code
phase : (or/c exact-nonnegative-integer? #false) = (syntax-local-phase-level)
Computes a unique hash code for id that is consistent with
bound-identifier=? in phase, using rec to compute
the hash code for id’s symbolic name.