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Correct the docs for surrogate's augment form.

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This commit is contained in:
Leif Andersen 2018-01-08 15:53:12 -05:00
parent f6bec77535
commit 16b8a4edc7
1 changed files with 3 additions and 3 deletions
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6
pkgs/racket-doc/scribblings/reference/surrogate.scrbl
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@ -16,7 +16,7 @@ surrogate.
@defform/subs[#:literals (augment override override-final)
(surrogate use-wrapper-proc method-spec ...)
([use-wrapper-proc #:use-wrapper-proc (code:line)]
[method-spec (augment method-id arg-spec ...)
[method-spec (augment default-expr method-id arg-spec ...)
(override method-id arg-spec ...)
(override-final method-id (lambda () default-expr)
arg-spec ...)]
@ -52,7 +52,7 @@ The first one is a fallback that invokes the original object's method,
skipping the surrogate. The other one invokes the surrogate.
@racketblock[(λ (fallback-thunk surrogate-thunk)
(surrogate-thunk))]
which means that it simply defers to the method being invoked on the surrogate.
This means that it simply defers to the method being invoked on the surrogate.
The @racket[_surrogate-wrapper-proc] capability is part of the surrogate
so that the dynamic extent of the calls to the surrogate can be adjusted
(by, for example, changing the values of parameters). The
@ -62,7 +62,7 @@ of the surrogate.
The host mixin has a single overriding method for each
@racket[method-id] in the @racket[surrogate] form (even the ones
specified with @racket[augment]. Each of these
specified with @racket[augment]). Each of these
methods is defined with a @racket[case-lambda] with one arm for each
@racket[arg-spec]. Each arm has the variables as arguments in the
@racket[arg-spec]. The body of each method tests the