1220 lines
45 KiB
Racket
1220 lines
45 KiB
Racket
#lang racket/base
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(require (for-template racket/base)
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(for-template "runtime.ss")
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racket/contract/base
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"minimatch.ss"
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racket/dict
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syntax/id-table
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syntax/stx
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syntax/keyword
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unstable/syntax
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unstable/struct
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"../util/txlift.ss"
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"rep-data.ss"
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"codegen-data.ss")
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;; Error reporting
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;; All entry points should have explicit, mandatory #:context arg
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;; (mandatory from outside, at least)
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(provide/contract
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[parse-rhs
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(-> syntax? (or/c false/c (listof sattr?)) boolean? #:context (or/c false/c syntax?)
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rhs?)]
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[parse-whole-pattern
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(-> syntax? DeclEnv/c #:context (or/c false/c syntax?)
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pattern?)]
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[parse-pattern-directives
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(-> stx-list?
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#:allow-declare? boolean?
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#:decls (or/c false/c DeclEnv/c)
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#:context (or/c false/c syntax?)
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(values stx-list? DeclEnv/c (listof syntax?) (listof SideClause/c)))]
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[parse-directive-table any/c]
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[get-decls+defs
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(-> list? boolean? #:context (or/c false/c syntax?)
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(values DeclEnv/c (listof syntax?)))]
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#|
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[decls-create-defs
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(-> DeclEnv/c
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(values DeclEnv/c (listof syntax?)))]
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|#
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[create-aux-def
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(-> DeclEntry/c
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(values DeclEntry/c (listof syntax?)))]
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#|
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[check-literals-list
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;; NEEDS txlift context
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(-> syntax? syntax?
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(listof (list/c identifier? identifier? ct-phase/c ct-phase/c)))]
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|#
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[check-literals-list/litset
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(-> syntax? syntax?
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(listof (list/c identifier? identifier?)))]
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#|
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[check-literal-sets-list
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;; NEEDS txlift context
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(-> syntax? syntax?
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(listof (listof (list/c identifier? identifier? ct-phase/c))))]
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|#
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[check-conventions-rules
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(-> syntax? syntax?
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(listof (list/c regexp? any/c)))])
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(define (atomic-datum? stx)
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(let ([datum (syntax-e stx)])
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(or (null? datum)
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(boolean? datum)
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(string? datum)
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(number? datum)
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(keyword? datum))))
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(define (id-predicate kw)
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(lambda (stx)
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(and (identifier? stx)
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(free-identifier=? stx kw)
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(begin (disappeared! stx) #t))))
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(define wildcard? (id-predicate (quote-syntax _)))
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(define epsilon? (id-predicate (quote-syntax ||)))
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(define dots? (id-predicate (quote-syntax ...)))
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(define plus-dots? (id-predicate (quote-syntax ...+)))
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(define keywords
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(list (quote-syntax _)
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(quote-syntax ||)
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(quote-syntax ...)
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(quote-syntax ~var)
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(quote-syntax ~datum)
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(quote-syntax ~literal)
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(quote-syntax ~and)
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(quote-syntax ~or)
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(quote-syntax ~not)
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(quote-syntax ~seq)
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(quote-syntax ~rep)
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(quote-syntax ~once)
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(quote-syntax ~optional)
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(quote-syntax ~between)
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(quote-syntax ~rest)
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(quote-syntax ~describe)
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(quote-syntax ~!)
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(quote-syntax ~bind)
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(quote-syntax ~fail)
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(quote-syntax ~early-fail)
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(quote-syntax ~parse)
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(quote-syntax ...+)))
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(define (reserved? stx)
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(and (identifier? stx)
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(for/or ([kw keywords])
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(free-identifier=? stx kw))))
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(define (safe-name? stx)
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(and (identifier? stx)
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(not (regexp-match? #rx"^~" (symbol->string (syntax-e stx))))))
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;; ---
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(define (disappeared! x)
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(cond [(identifier? x)
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(record-disappeared-uses (list x))]
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[(and (stx-pair? x) (identifier? (stx-car x)))
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(record-disappeared-uses (list (stx-car x)))]
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[else
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(raise-type-error 'disappeared!
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"identifier or syntax with leading identifier"
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x)]))
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;; ---
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;; parse-rhs : stx boolean (or #f (listof SAttr)) stx -> RHS
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;; If expected-attrs is true, then referenced stxclasses must be defined and
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;; literals must be bound. Set to #f for pass1 (attr collection);
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;; parser requires stxclasses to be bound.
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(define (parse-rhs stx expected-attrs splicing? #:context ctx)
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(call/txlifts
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(lambda ()
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(parameterize ((current-syntax-context ctx))
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(define-values (rest description transp? attributes auto-nested?
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decls defs commit?)
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(parse-rhs/part1 stx splicing? (and expected-attrs #t)))
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(define patterns
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(parameterize ((stxclass-lookup-config
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(cond [expected-attrs 'yes]
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[auto-nested? 'try]
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[else 'no])))
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(parse-variants rest decls splicing? expected-attrs)))
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(when (null? patterns)
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(wrong-syntax #f "expected at least one variant"))
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(let ([sattrs
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(or attributes
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(intersect-sattrss (map variant-attrs patterns)))])
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(make rhs stx sattrs transp? description patterns
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(append (get-txlifts-as-definitions) defs)
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commit?))))))
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(define (parse-rhs/part1 stx splicing? strict?)
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(define-values (chunks rest)
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(parse-keyword-options stx rhs-directive-table
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#:context (current-syntax-context)
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#:incompatible '((#:attributes #:auto-nested-attributes))
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#:no-duplicates? #t))
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(define description (options-select-value chunks '#:description #:default #f))
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(define opaque? (and (assq '#:opaque chunks) #t))
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(define transparent? (not opaque?))
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(define auto-nested? (and (assq '#:auto-nested-attributes chunks) #t))
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(define commit? ;; FIXME: default value should be (not splicing?) once this works
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(options-select-value chunks '#:commit? #:default #t))
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(define attributes (options-select-value chunks '#:attributes #:default #f))
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(define-values (decls defs) (get-decls+defs chunks strict?))
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(values rest description transparent? attributes auto-nested? decls defs commit?))
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(define (parse-variants rest decls splicing? expected-attrs)
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(define (gather-patterns stx)
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(syntax-case stx (pattern)
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[((pattern . _) . rest)
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(begin (disappeared! (stx-car stx))
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(cons (parse-variant (stx-car stx) splicing? decls expected-attrs)
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(gather-patterns #'rest)))]
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[(bad-variant . rest)
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(wrong-syntax #'bad-variant "expected syntax-class variant")]
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[()
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null]))
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(gather-patterns rest))
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;; get-decls+defs : chunks boolean -> (values DeclEnv (listof syntax))
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(define (get-decls+defs chunks strict?
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#:context [ctx (current-syntax-context)])
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(parameterize ((current-syntax-context ctx))
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(let*-values ([(decls defs1) (get-decls chunks strict?)]
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[(decls defs2) (decls-create-defs decls)])
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(values decls (append defs1 defs2)))))
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;; get-decls : chunks -> (values DeclEnv (listof syntax))
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(define (get-decls chunks strict?)
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(define lits (options-select-value chunks '#:literals #:default null))
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(define litsets (options-select-value chunks '#:literal-sets #:default null))
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(define convs (options-select-value chunks '#:conventions #:default null))
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(define localconvs (options-select-value chunks '#:local-conventions #:default null))
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(define literals
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(append-lits+litsets lits litsets))
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(define-values (convs-rules convs-defs)
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(for/fold ([convs-rules null] [convs-defs null])
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([conv-entry convs])
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(let* ([c (car conv-entry)]
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[args (cdr conv-entry)]
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[get-parser-id (conventions-get-procedures c)]
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[rules ((conventions-get-rules c))])
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(values (append rules convs-rules)
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(cons (make-conventions-def (map cadr rules) get-parser-id args)
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convs-defs)))))
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(define convention-rules (append localconvs convs-rules))
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(values (new-declenv literals #:conventions convention-rules)
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(reverse convs-defs)))
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;; make-conventions-def : (listof den:delay) id (listof syntax) -> syntax
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(define (make-conventions-def dens get-procedures-id args)
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(with-syntax ([(parser ...) (map den:delayed-parser dens)]
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[get-procedures get-procedures-id]
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[(arg ...) args])
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#'(define-values (parser ...)
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(let-values ([(parsers descriptions) (get-procedures arg ...)])
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(apply values parsers)))))
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;; decls-create-defs : DeclEnv -> (values DeclEnv (listof stx))
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(define (decls-create-defs decls0)
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(define (updater key value defs)
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(let-values ([(value newdefs) (create-aux-def value)])
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(values value (append newdefs defs))))
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(declenv-update/fold decls0 updater null))
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;; create-aux-def : DeclEntry -> (values DeclEntry (listof stx))
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;; FIXME: replace with txlift mechanism
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(define (create-aux-def entry)
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(match entry
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[(struct den:lit (_i _e _ip _lp))
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(values entry null)]
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[(struct den:class (name class args))
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(cond [(identifier? name)
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(let ([sc (get-stxclass/check-arg-count class (length args))])
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(with-syntax ([sc-parser (stxclass-parser-name sc)]
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[sc-description (stxclass-description sc)])
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(with-syntax ([parser (generate-temporary class)]
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[description (generate-temporary class)])
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(values (make den:parser #'parser #'description
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(stxclass-attrs sc) (stxclass/h? sc)
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(stxclass-commit? sc))
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(list #`(define-values (parser description)
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(curried-stxclass-procedures
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#,class #,args)))))))]
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[(regexp? name)
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;; Conventions rule; delay class lookup until module/intdefs pass2
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;; to allow forward references
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(with-syntax ([parser (generate-temporary class)]
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[description (generate-temporary class)])
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(values (make den:delayed #'parser #'description class)
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(list #`(define-values (parser description)
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(curried-stxclass-procedures
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#,class #,args)))))])]
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[(struct den:parser (_p _d _a _sp _c))
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(values entry null)]
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[(struct den:delayed (_p _d _c))
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(values entry null)]))
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(define (append-lits+litsets lits litsets)
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(define seen (make-bound-id-table lits))
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(for ([litset litsets])
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(for ([lit litset])
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(when (bound-id-table-ref seen (car lit) #f)
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(wrong-syntax (car lit) "duplicate literal declaration"))
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(bound-id-table-set! seen (car lit) #t)))
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(apply append lits litsets))
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;; parse-variant : stx boolean DeclEnv #f/(listof Sattr) -> RHS
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(define (parse-variant stx splicing? decls0 expected-attrs)
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(syntax-case stx (pattern)
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[(pattern p . rest)
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(let-values ([(rest decls defs clauses)
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(parse-pattern-directives #'rest
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#:allow-declare? #t
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#:decls decls0)])
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(disappeared! stx)
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(unless (stx-null? rest)
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(wrong-syntax (if (pair? rest) (car rest) rest)
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"unexpected terms after pattern directives"))
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(let* ([pattern
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(parse-whole-pattern #'p decls splicing?)]
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[attrs
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(append-iattrs
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(cons (pattern-attrs pattern)
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(side-clauses-attrss clauses)))]
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[sattrs (iattrs->sattrs attrs)])
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(when expected-attrs
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(parameterize ((current-syntax-context stx))
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;; Called just for error-reporting
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(reorder-iattrs expected-attrs attrs)))
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(make variant stx sattrs pattern clauses defs)))]))
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(define (side-clauses-attrss clauses)
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(for/list ([c clauses]
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#:when (or (clause:with? c) (clause:attr? c)))
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(if (clause:with? c)
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(pattern-attrs (clause:with-pattern c))
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(list (clause:attr-attr c)))))
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;; parse-whole-pattern : stx DeclEnv boolean -> Pattern
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(define (parse-whole-pattern stx decls [splicing? #f]
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#:context [ctx (current-syntax-context)])
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(parameterize ((current-syntax-context ctx))
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(define pattern
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(if splicing?
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(parse-head-pattern stx decls)
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(parse-single-pattern stx decls)))
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(define pvars (map attr-name (pattern-attrs pattern)))
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(define excess-domain (declenv-domain-difference decls pvars))
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(when (pair? excess-domain)
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(wrong-syntax #f "declared pattern variables do not appear in pattern"
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#:extra excess-domain))
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pattern))
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;; ----
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;; parse-single-pattern : stx DeclEnv -> SinglePattern
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(define (parse-single-pattern stx decls)
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;; FIXME: allow ghosts, convert to single-term pattern???
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(let ([p (parse-*-pattern stx decls #f #f)])
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p))
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;; parse-head-pattern : stx DeclEnv -> HeadPattern
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(define (parse-head-pattern stx decls)
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(parse-*-pattern stx decls #t #f))
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;; parse-*-pattern : stx DeclEnv boolean boolean -> Pattern
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(define (parse-*-pattern stx decls allow-head? allow-ghost?)
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(define (check-head! x)
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(unless allow-head?
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(wrong-syntax stx "head pattern not allowed here"))
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x)
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(define (check-ghost! x)
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;; Coerce to S-pattern IF only S-patterns allowed
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(cond [allow-ghost? x]
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[(not allow-head?) (ghost-pattern->single-pattern x)]
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[else
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(wrong-syntax stx "action pattern not allowed here")]))
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(syntax-case stx (~var ~literal ~datum ~and ~or ~not ~rest ~describe
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~seq ~optional ~! ~bind ~fail ~early-fail ~parse)
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[wildcard
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(wildcard? #'wildcard)
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(begin (disappeared! stx)
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(create-pat:any))]
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[~!
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(disappeared! stx)
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(check-ghost!
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(create-ghost:cut))]
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[reserved
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(reserved? #'reserved)
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(wrong-syntax stx "pattern keyword not allowed here")]
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[id
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(identifier? #'id)
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(parse-pat:id stx decls allow-head?)]
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[datum
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(atomic-datum? #'datum)
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(create-pat:datum (syntax->datum #'datum))]
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[(~var . rest)
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(disappeared! stx)
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(parse-pat:var stx decls allow-head?)]
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[(~datum . rest)
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(disappeared! stx)
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(syntax-case stx (~datum)
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[(~datum d)
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(create-pat:datum (syntax->datum #'d))]
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[_ (wrong-syntax stx "bad ~~datum form")])]
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[(~literal . rest)
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(disappeared! stx)
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(parse-pat:literal stx decls)]
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[(~and . rest)
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(disappeared! stx)
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(parse-pat:and stx decls allow-head? allow-ghost?)]
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[(~or . rest)
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(disappeared! stx)
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(parse-pat:or stx decls allow-head?)]
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[(~not . rest)
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(disappeared! stx)
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(parse-pat:not stx decls)]
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[(~rest . rest)
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(disappeared! stx)
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(parse-pat:rest stx decls)]
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[(~describe . rest)
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(disappeared! stx)
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(parse-pat:describe stx decls allow-head?)]
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[(~seq . rest)
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(disappeared! stx)
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(check-head!
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(parse-hpat:seq stx #'rest decls))]
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[(~optional . rest)
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(disappeared! stx)
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(check-head!
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(parse-hpat:optional stx decls))]
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[(~bind . rest)
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(disappeared! stx)
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(check-ghost!
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(parse-pat:bind stx decls))]
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[(~fail . rest)
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(disappeared! stx)
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(check-ghost!
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(parse-pat:fail stx decls #f))]
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[(~early-fail . rest)
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(disappeared! stx)
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(check-ghost!
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(parse-pat:fail stx decls #t))]
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[(~parse . rest)
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(disappeared! stx)
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(check-ghost!
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(parse-pat:parse stx decls))]
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[(head dots . tail)
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(dots? #'dots)
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(begin (disappeared! #'dots)
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(parse-pat:dots stx #'head #'tail decls))]
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[(head plus-dots . tail)
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(plus-dots? #'plus-dots)
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(begin (disappeared! #'plus-dots)
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(parse-pat:plus-dots stx #'head #'tail decls))]
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[(head . tail)
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(let ([headp (parse-*-pattern #'head decls #t #t)]
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[tailp (parse-single-pattern #'tail decls)])
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;; Only make pat:head if head is complicated;
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;; otherwise simple compound/pair
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;; FIXME: Could also inline ~seq patterns from head...?
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(cond [(ghost-pattern? headp)
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(create-pat:ghost headp tailp)]
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[(head-pattern? headp)
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(create-pat:head headp tailp)]
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[else
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(create-pat:compound '#:pair (list headp tailp))]))]
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[#(a ...)
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(let ([lp (parse-single-pattern (syntax/loc stx (a ...)) decls)])
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(create-pat:compound '#:vector (list lp)))]
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[b
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(box? (syntax-e #'b))
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(let ([bp (parse-single-pattern (unbox (syntax-e #'b)) decls)])
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(create-pat:compound '#:box (list bp)))]
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[s
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(and (struct? (syntax-e #'s)) (prefab-struct-key (syntax-e #'s)))
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(let* ([s (syntax-e #'s)]
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[key (prefab-struct-key s)]
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[contents (struct->list s)])
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(let ([lp (parse-single-pattern (datum->syntax #f contents #'s) decls)])
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(create-pat:compound `(#:pstruct ,key) (list lp))))]))
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;; parse-ellipsis-head-pattern : stx DeclEnv number -> (listof EllipsisHeadPattern)
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(define (parse-ellipsis-head-pattern stx decls)
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(syntax-case stx (~or ~between ~optional ~once)
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[(~or . _)
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(begin
|
|
(unless (stx-list? stx)
|
|
(wrong-syntax stx "expected sequence of patterns"))
|
|
(apply append
|
|
(for/list ([sub (cdr (stx->list stx))])
|
|
(parse-ellipsis-head-pattern sub decls))))]
|
|
[(~optional . _)
|
|
(disappeared! stx)
|
|
(list (parse-ehpat/optional stx decls))]
|
|
[(~once . _)
|
|
(disappeared! stx)
|
|
(list (parse-ehpat/once stx decls))]
|
|
[(~between . _)
|
|
(disappeared! stx)
|
|
(list (parse-ehpat/bounds stx decls))]
|
|
[_
|
|
(let ([head (parse-head-pattern stx decls)])
|
|
(list (make ehpat (map increase-depth (pattern-attrs head))
|
|
head
|
|
#f)))]))
|
|
|
|
;; ----
|
|
|
|
(define (parse-pat:id id decls allow-head?)
|
|
(define entry (declenv-lookup decls id))
|
|
(match entry
|
|
[(struct den:lit (internal literal input-phase lit-phase))
|
|
(create-pat:literal literal input-phase lit-phase)]
|
|
[(struct den:class (_n _c _a))
|
|
(error 'parse-pat:id
|
|
"(internal error) decls had leftover stxclass entry: ~s"
|
|
entry)]
|
|
[(struct den:parser (parser desc attrs splicing? commit?))
|
|
;; FIXME: why no allow-head? check???
|
|
(if splicing?
|
|
(begin
|
|
(unless allow-head?
|
|
(wrong-syntax id "splicing syntax class not allowed here"))
|
|
(parse-pat:id/h id parser null attrs commit?))
|
|
(parse-pat:id/s id parser null attrs commit?))]
|
|
[(struct den:delayed (parser desc class))
|
|
(let ([sc (get-stxclass class)])
|
|
(cond [(stxclass/s? sc)
|
|
(parse-pat:id/s id
|
|
parser
|
|
null
|
|
(stxclass-attrs sc)
|
|
(stxclass-commit? sc))]
|
|
[(stxclass/h? sc)
|
|
(unless allow-head?
|
|
(wrong-syntax id "splicing syntax class not allowed here"))
|
|
(parse-pat:id/h id
|
|
parser
|
|
null
|
|
(stxclass-attrs sc)
|
|
(stxclass-commit? sc))]))]
|
|
['#f
|
|
(when #t ;; FIXME: right place???
|
|
(unless (safe-name? id)
|
|
(wrong-syntax id "expected identifier not starting with ~~ character")))
|
|
(let-values ([(name sc) (split-id/get-stxclass id decls)])
|
|
(if sc
|
|
(parse-pat:var* id allow-head? name sc null)
|
|
(create-pat:var name #f null null #t)))]))
|
|
|
|
(define (parse-pat:var stx decls allow-head?)
|
|
(define name0
|
|
(syntax-case stx (~var)
|
|
[(~var name . _)
|
|
(unless (identifier? #'name)
|
|
(wrong-syntax #'name "expected identifier"))
|
|
#'name]
|
|
[_
|
|
(wrong-syntax stx "bad ~~var form")]))
|
|
(define-values (scname args pfx)
|
|
(syntax-case stx (~var)
|
|
[(~var _name)
|
|
(values #f null #f)]
|
|
[(~var _name sc/sc+args . rest)
|
|
(let-values ([(sc args)
|
|
(syntax-case #'sc/sc+args ()
|
|
[sc
|
|
(identifier? #'sc)
|
|
(values #'sc null)]
|
|
[(sc arg ...)
|
|
(identifier? #'sc)
|
|
(values #'sc (syntax->list #'(arg ...)))]
|
|
[_
|
|
(wrong-syntax stx "bad ~~var form")])])
|
|
(define chunks
|
|
(parse-keyword-options/eol #'rest var-pattern-directive-table
|
|
#:no-duplicates? #t
|
|
#:context stx))
|
|
(define sep
|
|
(options-select-value chunks '#:attr-name-separator #:default #f))
|
|
(values sc args (if sep (syntax-e sep) ".")))]
|
|
[_
|
|
(wrong-syntax stx "bad ~~var form")]))
|
|
(cond [(and (epsilon? name0) (not scname))
|
|
(wrong-syntax name0 "illegal pattern variable name")]
|
|
[(and (wildcard? name0) (not scname))
|
|
(create-pat:any)]
|
|
[scname
|
|
(let ([sc (get-stxclass/check-arg-count scname (length args))])
|
|
(parse-pat:var* stx allow-head? name0 sc args pfx))]
|
|
[else ;; Just proper name
|
|
(create-pat:var name0 #f null null #t)]))
|
|
|
|
(define (parse-pat:var* stx allow-head? name sc args [pfx "."])
|
|
(cond [(stxclass/s? sc)
|
|
(parse-pat:id/s name
|
|
(stxclass-parser-name sc)
|
|
args
|
|
(stxclass-attrs sc)
|
|
(stxclass-commit? sc)
|
|
pfx)]
|
|
[(stxclass/h? sc)
|
|
(unless allow-head?
|
|
(wrong-syntax stx "splicing syntax class not allowed here"))
|
|
(parse-pat:id/h name
|
|
(stxclass-parser-name sc)
|
|
args
|
|
(stxclass-attrs sc)
|
|
(stxclass-commit? sc)
|
|
pfx)]))
|
|
|
|
(define (parse-pat:id/s name parser args attrs commit? [pfx "."])
|
|
(define prefix (name->prefix name pfx))
|
|
(define bind (name->bind name))
|
|
(create-pat:var bind parser args (id-pattern-attrs attrs prefix) commit?))
|
|
|
|
(define (parse-pat:id/h name parser args attrs commit? [pfx "."])
|
|
(define prefix (name->prefix name pfx))
|
|
(define bind (name->bind name))
|
|
(create-hpat:var bind parser args (id-pattern-attrs attrs prefix) commit?))
|
|
|
|
(define (name->prefix id pfx)
|
|
(cond [(wildcard? id) #f]
|
|
[(epsilon? id) id]
|
|
[else (format-id id "~a~a" (syntax-e id) pfx)]))
|
|
|
|
(define (name->bind id)
|
|
(cond [(wildcard? id) #f]
|
|
[(epsilon? id) #f]
|
|
[else id]))
|
|
|
|
;; id-pattern-attrs : (listof SAttr)IdPrefix -> (listof IAttr)
|
|
(define (id-pattern-attrs sattrs prefix)
|
|
(if prefix
|
|
(for/list ([a sattrs])
|
|
(prefix-attr a prefix))
|
|
null))
|
|
|
|
;; prefix-attr : SAttr identifier -> IAttr
|
|
(define (prefix-attr a prefix)
|
|
(make attr (prefix-attr-name prefix (attr-name a))
|
|
(attr-depth a)
|
|
(attr-syntax? a)))
|
|
|
|
;; prefix-attr-name : id symbol -> id
|
|
(define (prefix-attr-name prefix name)
|
|
(format-id prefix "~a~a" (syntax-e prefix) name))
|
|
|
|
;; ----
|
|
|
|
(define (parse-pat:literal stx decls)
|
|
(syntax-case stx (~literal)
|
|
[(~literal lit . more)
|
|
(unless (identifier? #'lit)
|
|
(wrong-syntax #'lit "expected identifier"))
|
|
(let* ([chunks (parse-keyword-options/eol #'more phase-directive-table
|
|
#:no-duplicates? #t
|
|
#:context stx)]
|
|
[phase (options-select-value chunks '#:phase #:default #f)])
|
|
;; FIXME: Duplicates phase expr!
|
|
(create-pat:literal #'lit phase phase))]
|
|
[_
|
|
(wrong-syntax stx "bad ~~literal pattern")]))
|
|
|
|
(define (parse-pat:describe stx decls allow-head?)
|
|
(syntax-case stx ()
|
|
[(_ . rest)
|
|
(let-values ([(chunks rest)
|
|
(parse-keyword-options #'rest describe-option-table
|
|
#:no-duplicates? #t
|
|
#:context stx)])
|
|
(define transparent? (and (assq '#:transparent chunks) #t))
|
|
(syntax-case rest ()
|
|
[(description pattern)
|
|
(let ([p (parse-*-pattern #'pattern decls allow-head? #f)])
|
|
(if (head-pattern? p)
|
|
(create-hpat:describe #'description transparent? p)
|
|
(create-pat:describe #'description transparent? p)))]))]))
|
|
|
|
(define (split-prefix xs pred)
|
|
(let loop ([xs xs] [rprefix null])
|
|
(cond [(and (pair? xs) (pred (car xs)))
|
|
(loop (cdr xs) (cons (car xs) rprefix))]
|
|
[else
|
|
(values (reverse rprefix) xs)])))
|
|
|
|
(define (parse-pat:and stx decls allow-head? allow-ghost?)
|
|
;; allow-ghost? = allowed to *return* pure ghost pattern;
|
|
;; all ~and patterns are allowed to *contain* ghost patterns
|
|
(define patterns0 (parse-cdr-patterns stx decls allow-head? #t))
|
|
(define-values (ghosts patterns) (split-prefix patterns0 ghost-pattern?))
|
|
(cond [(null? patterns)
|
|
(cond [allow-ghost?
|
|
(create-ghost:and ghosts)]
|
|
[allow-head?
|
|
(wrong-syntax stx "expected at least one head pattern")]
|
|
[else
|
|
(wrong-syntax stx "expected at least one single-term pattern")])]
|
|
[else
|
|
(let ([p (parse-pat:and* stx patterns)])
|
|
(if (head-pattern? p)
|
|
(for/fold ([p p]) ([ghost (reverse ghosts)])
|
|
(create-hpat:ghost ghost p))
|
|
(for/fold ([p p]) ([ghost (reverse ghosts)])
|
|
(create-pat:ghost ghost p))))]))
|
|
|
|
(define (parse-pat:and* stx patterns)
|
|
;; patterns is non-empty (empty case handled above)
|
|
(cond [(null? (cdr patterns))
|
|
(car patterns)]
|
|
[(ormap head-pattern? patterns)
|
|
;; Check to make sure *all* are head patterns
|
|
(for ([pattern patterns]
|
|
[pattern-stx (stx->list (stx-cdr stx))])
|
|
(unless (or (ghost-pattern? pattern) (head-pattern? pattern))
|
|
(wrong-syntax
|
|
pattern-stx
|
|
"single-term pattern not allowed after head pattern")))
|
|
(let ([p0 (car patterns)]
|
|
[lps (map ghost/head-pattern->list-pattern (cdr patterns))])
|
|
(create-hpat:and p0 (create-pat:and lps)))]
|
|
[else
|
|
(create-pat:and
|
|
(for/list ([p patterns])
|
|
(if (ghost-pattern? p)
|
|
(ghost-pattern->single-pattern p)
|
|
p)))]))
|
|
|
|
(define (parse-pat:or stx decls allow-head?)
|
|
(define patterns (parse-cdr-patterns stx decls allow-head? #f))
|
|
(cond [(null? (cdr patterns))
|
|
(car patterns)]
|
|
[else
|
|
(cond [(ormap head-pattern? patterns)
|
|
(create-hpat:or patterns)]
|
|
[else
|
|
(create-pat:or patterns)])]))
|
|
|
|
(define (parse-pat:not stx decls)
|
|
(syntax-case stx (~not)
|
|
[(~not pattern)
|
|
(let ([p (parse-single-pattern #'pattern decls)])
|
|
(create-pat:not p))]
|
|
[_
|
|
(wrong-syntax stx "expected a single subpattern")]))
|
|
|
|
(define (parse-hpat:seq stx list-stx decls)
|
|
(define pattern (parse-single-pattern list-stx decls))
|
|
(check-list-pattern pattern stx)
|
|
(create-hpat:seq pattern))
|
|
|
|
(define (parse-cdr-patterns stx decls allow-head? allow-ghost?)
|
|
(unless (stx-list? stx)
|
|
(wrong-syntax stx "expected sequence of patterns"))
|
|
(let ([result
|
|
(for/list ([sub (cdr (stx->list stx))])
|
|
(parse-*-pattern sub decls allow-head? allow-ghost?))])
|
|
(when (null? result)
|
|
(wrong-syntax stx "expected at least one pattern"))
|
|
result))
|
|
|
|
(define (parse-pat:dots stx head tail decls)
|
|
(define headps (parse-ellipsis-head-pattern head decls))
|
|
(define tailp (parse-single-pattern tail decls))
|
|
(unless (pair? headps)
|
|
(wrong-syntax head "expected at least one pattern"))
|
|
(create-pat:dots headps tailp))
|
|
|
|
(define (parse-pat:plus-dots stx head tail decls)
|
|
(define headp (parse-head-pattern head decls))
|
|
(define tailp (parse-single-pattern tail decls))
|
|
(define head/rep
|
|
(make-ehpat (map increase-depth (pattern-attrs headp))
|
|
headp
|
|
(make-rep:bounds 1 +inf.0 #f #f #f)))
|
|
(create-pat:dots (list head/rep) tailp))
|
|
|
|
(define (parse-pat:bind stx decls)
|
|
(syntax-case stx ()
|
|
[(_ clause ...)
|
|
(let ([clauses (check-bind-clause-list #'(clause ...) stx)])
|
|
(make ghost:bind
|
|
(append-iattrs (side-clauses-attrss clauses))
|
|
clauses))]))
|
|
|
|
(define (parse-pat:fail stx decls early?)
|
|
(syntax-case stx ()
|
|
[(_ . rest)
|
|
(let-values ([(chunks rest)
|
|
(parse-keyword-options #'rest fail-directive-table
|
|
#:context stx
|
|
#:incompatible '((#:when #:unless))
|
|
#:no-duplicates? #t)])
|
|
(let ([condition
|
|
(if (null? chunks)
|
|
#'#t
|
|
(let ([chunk (car chunks)])
|
|
(if (eq? (car chunk) '#:when)
|
|
(caddr chunk)
|
|
#`(not #,(caddr chunk)))))])
|
|
(syntax-case rest ()
|
|
[(message)
|
|
(create-ghost:fail early? condition #'message)]
|
|
[()
|
|
(wrong-syntax stx "missing message expression")]
|
|
[_
|
|
(wrong-syntax stx "bad ~~fail pattern")])))]))
|
|
|
|
(define (parse-pat:parse stx decls)
|
|
(syntax-case stx (~parse)
|
|
[(~parse pattern expr)
|
|
(let ([p (parse-single-pattern #'pattern decls)])
|
|
(create-ghost:parse p #'expr))]
|
|
[_
|
|
(wrong-syntax stx "bad ~~parse pattern")]))
|
|
|
|
|
|
(define (parse-pat:rest stx decls)
|
|
(syntax-case stx ()
|
|
[(_ pattern)
|
|
(parse-single-pattern #'pattern decls)]))
|
|
|
|
(define (check-list-pattern pattern stx)
|
|
(match pattern
|
|
[(make pat:datum _base '())
|
|
#t]
|
|
[(make pat:head _base _head tail)
|
|
(check-list-pattern tail stx)]
|
|
[(make pat:ghost _base _ghost tail)
|
|
(check-list-pattern tail stx)]
|
|
[(make pat:dots _base _head tail)
|
|
(check-list-pattern tail stx)]
|
|
[(make pat:compound _base '#:pair (list _head tail))
|
|
(check-list-pattern tail stx)]
|
|
[_
|
|
(wrong-syntax stx "expected proper list pattern")]))
|
|
|
|
(define (parse-hpat:optional stx decls)
|
|
(define-values (head all-iattrs _name _tmm defaults)
|
|
(parse-optional-pattern stx decls h-optional-directive-table))
|
|
(make hpat:optional all-iattrs head defaults))
|
|
|
|
(define (parse-ehpat/optional stx decls)
|
|
(define-values (head all-iattrs name too-many-msg defaults)
|
|
(parse-optional-pattern stx decls eh-optional-directive-table))
|
|
(make ehpat all-iattrs head
|
|
(make rep:optional name too-many-msg defaults)))
|
|
|
|
(define (parse-optional-pattern stx decls optional-directive-table)
|
|
(syntax-case stx (~optional)
|
|
[(~optional p . options)
|
|
(let ([head (parse-head-pattern #'p decls)])
|
|
(define chunks
|
|
(parse-keyword-options/eol #'options optional-directive-table
|
|
#:no-duplicates? #t
|
|
#:context stx))
|
|
(let ([too-many-msg
|
|
(options-select-value chunks '#:too-many #:default #'#f)]
|
|
[name
|
|
(options-select-value chunks '#:name #:default #'#f)]
|
|
[defaults
|
|
(options-select-value chunks '#:defaults #:default '())])
|
|
(define pattern-iattrs (pattern-attrs head))
|
|
(define defaults-iattrs
|
|
(append-iattrs (side-clauses-attrss defaults)))
|
|
(define all-iattrs
|
|
(union-iattrs (list pattern-iattrs defaults-iattrs)))
|
|
(check-iattrs-subset defaults-iattrs pattern-iattrs stx)
|
|
(values head all-iattrs name too-many-msg defaults)))]))
|
|
|
|
(define (parse-ehpat/once stx decls)
|
|
(syntax-case stx (~once)
|
|
[(~once p . options)
|
|
(let ([head (parse-head-pattern #'p decls)])
|
|
(define chunks
|
|
(parse-keyword-options/eol #'options
|
|
(list (list '#:too-few check-expression)
|
|
(list '#:too-many check-expression)
|
|
(list '#:name check-expression))
|
|
#:context stx))
|
|
(let ([too-few-msg
|
|
(options-select-value chunks '#:too-few #:default #'#f)]
|
|
[too-many-msg
|
|
(options-select-value chunks '#:too-many #:default #'#f)]
|
|
[name
|
|
(options-select-value chunks '#:name #:default #'#f)])
|
|
(make ehpat (pattern-attrs head)
|
|
head
|
|
(make rep:once name too-few-msg too-many-msg))))]))
|
|
|
|
(define (parse-ehpat/bounds stx decls)
|
|
(syntax-case stx (~between)
|
|
[(~between p min max . options)
|
|
(let ([head (parse-head-pattern #'p decls)])
|
|
(define minN (syntax-e #'min))
|
|
(define maxN (syntax-e #'max))
|
|
(unless (exact-nonnegative-integer? minN)
|
|
(wrong-syntax #'min
|
|
"expected exact nonnegative integer"))
|
|
(unless (or (exact-nonnegative-integer? maxN) (equal? maxN +inf.0))
|
|
(wrong-syntax #'max
|
|
"expected exact nonnegative integer or +inf.0"))
|
|
(when (> minN maxN)
|
|
(wrong-syntax stx "minimum larger than maximum repetition constraint"))
|
|
(let ([chunks (parse-keyword-options/eol
|
|
#'options
|
|
(list (list '#:too-few check-expression)
|
|
(list '#:too-many check-expression)
|
|
(list '#:name check-expression))
|
|
#:context stx)])
|
|
(let ([too-few-msg
|
|
(options-select-value chunks '#:too-few #:default #'#f)]
|
|
[too-many-msg
|
|
(options-select-value chunks '#:too-many #:default #'#f)]
|
|
[name
|
|
(options-select-value chunks '#:name #:default #'#f)])
|
|
(make ehpat (map increase-depth (pattern-attrs head))
|
|
head
|
|
(make rep:bounds #'min #'max
|
|
name too-few-msg too-many-msg)))))]))
|
|
|
|
;; -----
|
|
|
|
;; parse-pattern-directives : stxs(PatternDirective) <kw-args>
|
|
;; -> stx DeclEnv (listof stx) (listof SideClause)
|
|
(define (parse-pattern-directives stx
|
|
#:allow-declare? allow-declare?
|
|
#:decls decls
|
|
#:context [ctx (current-syntax-context)])
|
|
(parameterize ((current-syntax-context ctx))
|
|
(define-values (chunks rest)
|
|
(parse-keyword-options stx pattern-directive-table #:context ctx))
|
|
(define-values (decls2 chunks2)
|
|
(if allow-declare?
|
|
(grab-decls chunks decls)
|
|
(values decls chunks)))
|
|
(define sides
|
|
;; NOTE: use *original* decls
|
|
;; because decls2 has #:declares for *above* pattern
|
|
(parse-pattern-sides chunks2 decls))
|
|
(define-values (decls3 defs)
|
|
(decls-create-defs decls2))
|
|
(values rest decls3 defs (parse-pattern-sides chunks2 decls))))
|
|
|
|
;; parse-pattern-sides : (listof chunk) DeclEnv
|
|
;; -> (listof SideClause/c)
|
|
;; Invariant: decls contains only literals bindings
|
|
(define (parse-pattern-sides chunks decls)
|
|
(match chunks
|
|
[(cons (list '#:declare declare-stx _ _) rest)
|
|
(wrong-syntax declare-stx
|
|
"#:declare can only follow pattern or #:with clause")]
|
|
[(cons (list '#:fail-when fw-stx when-condition expr) rest)
|
|
(cons (make clause:fail when-condition expr)
|
|
(parse-pattern-sides rest decls))]
|
|
[(cons (list '#:fail-unless fu-stx unless-condition expr) rest)
|
|
(cons (make clause:fail #`(not #,unless-condition) expr)
|
|
(parse-pattern-sides rest decls))]
|
|
[(cons (list '#:when w-stx unless-condition) rest)
|
|
;; Bleh: when is basically fail-unless without the msg argument
|
|
(cons (make clause:fail #`(not #,unless-condition) #'#f)
|
|
(parse-pattern-sides rest decls))]
|
|
[(cons (list '#:with with-stx pattern expr) rest)
|
|
(let-values ([(decls2 rest) (grab-decls rest decls)])
|
|
(let-values ([(decls2a defs) (decls-create-defs decls2)])
|
|
(cons (make clause:with (parse-whole-pattern pattern decls2a) expr defs)
|
|
(parse-pattern-sides rest decls))))]
|
|
[(cons (list '#:attr attr-stx a expr) rest)
|
|
(cons (make clause:attr a expr)
|
|
(parse-pattern-sides rest decls))]
|
|
['()
|
|
'()]))
|
|
|
|
;; grab-decls : (listof chunk) DeclEnv
|
|
;; -> (values DeclEnv (listof chunk))
|
|
(define (grab-decls chunks decls0)
|
|
(define (add-decl stx decls)
|
|
(syntax-case stx ()
|
|
[(#:declare name sc)
|
|
(identifier? #'sc)
|
|
(add-decl* decls #'name #'sc null)]
|
|
[(#:declare name (sc expr ...))
|
|
(identifier? #'sc)
|
|
(add-decl* decls #'name #'sc (syntax->list #'(expr ...)))]
|
|
[(#:declare name bad-sc)
|
|
(wrong-syntax #'bad-sc
|
|
"expected syntax class name (possibly with parameters)")]))
|
|
(define (add-decl* decls id sc-name args)
|
|
(declenv-put-stxclass decls id sc-name args))
|
|
(define (loop chunks decls)
|
|
(match chunks
|
|
[(cons (cons '#:declare decl-stx) rest)
|
|
(loop rest (add-decl decl-stx decls))]
|
|
[_ (values decls chunks)]))
|
|
(loop chunks decls0))
|
|
|
|
|
|
;; ----
|
|
|
|
;; Keyword Options & Checkers
|
|
|
|
;; check-attr-arity-list : stx stx -> (listof SAttr)
|
|
(define (check-attr-arity-list stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected list of attribute declarations" ctx stx))
|
|
(let ([iattrs (for/list ([x (stx->list stx)]) (check-attr-arity x ctx))])
|
|
(iattrs->sattrs (append-iattrs (map list iattrs)))))
|
|
|
|
;; check-attr-arity : stx stx -> IAttr
|
|
(define (check-attr-arity stx ctx)
|
|
(syntax-case stx ()
|
|
[attr
|
|
(identifier? #'attr)
|
|
(make-attr #'attr 0 #f)]
|
|
[(attr depth)
|
|
(begin (unless (identifier? #'attr)
|
|
(raise-syntax-error #f "expected attribute name" ctx #'attr))
|
|
(unless (exact-nonnegative-integer? (syntax-e #'depth))
|
|
(raise-syntax-error #f "expected depth (nonnegative integer)" ctx #'depth))
|
|
(make-attr #'attr (syntax-e #'depth) #f))]
|
|
[_
|
|
(raise-syntax-error #f "expected attribute name with optional depth declaration" ctx stx)]))
|
|
|
|
;; check-literals-list : stx stx -> (listof (list id id ct-phase ct-phase))
|
|
;; - txlifts defs of phase expressions
|
|
;; - txlifts checks that literals are bound
|
|
(define (check-literals-list stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected literals list" ctx stx))
|
|
(let ([lits (for/list ([x (stx->list stx)]) (check-literal-entry x ctx))])
|
|
(let ([dup (check-duplicate-identifier (map car lits))])
|
|
(when dup (raise-syntax-error #f "duplicate literal identifier" ctx dup)))
|
|
lits))
|
|
|
|
;; check-literal-entry : stx stx -> (list id id ct-phase ct-phase)
|
|
(define (check-literal-entry stx ctx)
|
|
(define (go internal external phase)
|
|
(txlift #`(check-literal (quote-syntax #,external)
|
|
#,phase (quote-syntax #,ctx)))
|
|
(list internal external phase phase))
|
|
(syntax-case stx ()
|
|
[(internal external #:phase phase)
|
|
(and (identifier? #'internal) (identifier? #'external))
|
|
(go #'internal #'external (txlift #'phase))]
|
|
[(internal external)
|
|
(and (identifier? #'internal) (identifier? #'external))
|
|
(go #'internal #'external #'(syntax-local-phase-level))]
|
|
[id
|
|
(identifier? #'id)
|
|
(go #'id #'id #'(syntax-local-phase-level))]
|
|
[_
|
|
(raise-syntax-error #f "expected literal entry"
|
|
ctx stx)]))
|
|
|
|
;; Literal sets - Definition
|
|
|
|
;; check-literals-list/litset : stx stx -> (listof (list id id))
|
|
(define (check-literals-list/litset stx ctx)
|
|
(let ([lits (for/list ([x (stx->list stx)])
|
|
(check-literal-entry/litset x ctx))])
|
|
(let ([dup (check-duplicate-identifier (map car lits))])
|
|
(when dup (raise-syntax-error #f "duplicate literal identifier" ctx dup)))
|
|
lits))
|
|
|
|
;; check-literal-entry/litset : stx stx -> (list id id)
|
|
(define (check-literal-entry/litset stx ctx)
|
|
(syntax-case stx ()
|
|
[(internal external)
|
|
(and (identifier? #'internal) (identifier? #'external))
|
|
(list #'internal #'external)]
|
|
[id
|
|
(identifier? #'id)
|
|
(list #'id #'id)]
|
|
[_
|
|
(raise-syntax-error #f "expected literal entry"
|
|
ctx stx)]))
|
|
|
|
;; Literal sets - Import
|
|
|
|
;; check-literal-sets-list : stx stx -> (listof (listof (list id id ct-phase^2)))
|
|
(define (check-literal-sets-list stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected literal-set list" ctx stx))
|
|
(for/list ([x (stx->list stx)])
|
|
(check-literal-set-entry x ctx)))
|
|
|
|
;; check-literal-set-entry : stx stx -> (listof (list id id ct-phase^2))
|
|
(define (check-literal-set-entry stx ctx)
|
|
(define (elaborate litset-id lctx phase)
|
|
(let ([litset (syntax-local-value/catch litset-id literalset?)])
|
|
(unless litset
|
|
(raise-syntax-error #f "expected identifier defined as a literal-set"
|
|
ctx litset-id))
|
|
(elaborate2 litset lctx phase)))
|
|
(define (elaborate2 litset lctx phase)
|
|
(for/list ([entry (literalset-literals litset)])
|
|
(list (datum->syntax lctx (car entry) stx)
|
|
(cadr entry)
|
|
phase
|
|
(literalset-phase litset))))
|
|
(syntax-case stx ()
|
|
[(litset . more)
|
|
(and (identifier? #'litset))
|
|
(let* ([chunks (parse-keyword-options/eol #'more litset-directive-table
|
|
#:no-duplicates? #t
|
|
#:context ctx)]
|
|
[lctx (options-select-value chunks '#:at #:default #'litset)]
|
|
[phase (options-select-value chunks '#:phase
|
|
#:default #'(syntax-local-phase-level))])
|
|
(elaborate #'litset lctx (txlift phase)))]
|
|
[litset
|
|
(identifier? #'litset)
|
|
(elaborate #'litset #'litset #'(syntax-local-phase-level))]
|
|
[_
|
|
(raise-syntax-error #f "expected literal-set entry" ctx stx)]))
|
|
|
|
;; Conventions
|
|
|
|
;; returns (listof (cons Conventions (listof syntax)))
|
|
(define (check-conventions-list stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected conventions list" ctx stx))
|
|
(for/list ([x (stx->list stx)])
|
|
(check-conventions x ctx)))
|
|
|
|
;; returns (cons Conventions (listof syntax))
|
|
(define (check-conventions stx ctx)
|
|
(define (elaborate conventions-id args)
|
|
(let ([cs (syntax-local-value/catch conventions-id conventions?)])
|
|
(unless cs
|
|
(raise-syntax-error #f "expected identifier defined as a conventions"
|
|
ctx conventions-id))
|
|
(cons cs args)))
|
|
(syntax-case stx ()
|
|
[(conventions arg ...)
|
|
(identifier? #'conventions)
|
|
(elaborate #'conventions (syntax->list #'(arg ...)))]
|
|
[conventions
|
|
(identifier? #'conventions)
|
|
(elaborate #'conventions null)]
|
|
[_
|
|
(raise-syntax-error "expected conventions entry" ctx stx)]))
|
|
|
|
;; returns (listof (list regexp DeclEntry))
|
|
(define (check-conventions-rules stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected convention rule list" ctx stx))
|
|
(for/list ([x (stx->list stx)])
|
|
(check-conventions-rule x ctx)))
|
|
|
|
;; returns (list regexp DeclEntry)
|
|
(define (check-conventions-rule stx ctx)
|
|
(define (check-conventions-pattern x blame)
|
|
(cond [(symbol? x)
|
|
(regexp (string-append "^" (regexp-quote (symbol->string x)) "$"))]
|
|
[(regexp? x) x]
|
|
[else
|
|
(raise-syntax-error #f "expected identifier convention pattern"
|
|
ctx blame)]))
|
|
(define (check-sc-expr x rx)
|
|
(syntax-case x ()
|
|
[sc
|
|
(identifier? #'sc)
|
|
(make den:class rx #'sc null)]
|
|
[(sc arg ...)
|
|
(identifier? #'sc)
|
|
(make den:class rx #'sc (syntax->list #'(arg ...)))]
|
|
[_ (raise-syntax-error #f "expected syntax class use" ctx x)]))
|
|
(syntax-case stx ()
|
|
[(rx sc)
|
|
(let ([name-pattern (check-conventions-pattern (syntax-e #'rx) #'rx)])
|
|
(list name-pattern
|
|
(check-sc-expr #'sc name-pattern)))]))
|
|
|
|
;; bind clauses
|
|
(define (check-bind-clause-list stx ctx)
|
|
(unless (stx-list? stx)
|
|
(raise-syntax-error #f "expected sequence of bind clauses" ctx stx))
|
|
(for/list ([clause (stx->list stx)])
|
|
(check-bind-clause clause ctx)))
|
|
|
|
(define (check-bind-clause clause ctx)
|
|
(syntax-case clause ()
|
|
[(attr-decl expr)
|
|
(make clause:attr (check-attr-arity #'attr-decl ctx) #'expr)]
|
|
[_ (raise-syntax-error #f "expected bind clause" ctx clause)]))
|
|
|
|
|
|
;; Directive tables
|
|
|
|
;; common-parse-directive-table
|
|
(define common-parse-directive-table
|
|
(list (list '#:literals check-literals-list)
|
|
(list '#:literal-sets check-literal-sets-list)
|
|
(list '#:conventions check-conventions-list)
|
|
(list '#:local-conventions check-conventions-rules)))
|
|
|
|
;; parse-directive-table
|
|
(define parse-directive-table
|
|
(list* (list '#:context check-expression)
|
|
common-parse-directive-table))
|
|
|
|
;; rhs-directive-table
|
|
(define rhs-directive-table
|
|
(list* (list '#:description check-expression)
|
|
(list '#:transparent)
|
|
(list '#:opaque)
|
|
(list '#:attributes check-attr-arity-list)
|
|
(list '#:auto-nested-attributes)
|
|
(list '#:commit? check-stx-boolean)
|
|
common-parse-directive-table))
|
|
|
|
;; pattern-directive-table
|
|
(define pattern-directive-table
|
|
(list (list '#:declare check-identifier check-expression)
|
|
(list '#:fail-when check-expression check-expression)
|
|
(list '#:fail-unless check-expression check-expression)
|
|
(list '#:when check-expression)
|
|
(list '#:with check-expression check-expression)
|
|
(list '#:attr check-attr-arity check-expression)))
|
|
|
|
;; fail-directive-table
|
|
(define fail-directive-table
|
|
(list (list '#:when check-expression)
|
|
(list '#:unless check-expression)))
|
|
|
|
;; describe-option-table
|
|
(define describe-option-table
|
|
(list (list '#:transparent)))
|
|
|
|
;; eh-optional-directive-table
|
|
(define eh-optional-directive-table
|
|
(list (list '#:too-many check-expression)
|
|
(list '#:name check-expression)
|
|
(list '#:defaults check-bind-clause-list)))
|
|
|
|
;; h-optional-directive-table
|
|
(define h-optional-directive-table
|
|
(list (list '#:defaults check-bind-clause-list)))
|
|
|
|
;; phase-directive-table
|
|
(define phase-directive-table
|
|
(list (list '#:phase check-expression)))
|
|
|
|
;; litset-directive-table
|
|
(define litset-directive-table
|
|
(cons (list '#:at check-identifier)
|
|
phase-directive-table))
|
|
|
|
;; var-pattern-directive-table
|
|
(define var-pattern-directive-table
|
|
(list (list '#:attr-name-separator check-stx-string)))
|