47 lines
1.9 KiB
Racket
47 lines
1.9 KiB
Racket
#lang racket/base
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(require stxparse-info/parse/pre
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"provide.rkt"
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syntax/contract
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(only-in stxparse-info/parse/private/residual ;; keep abs. path
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this-context-syntax
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this-role)
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racket/contract/base)
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(define not-given (gensym))
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(define-syntax-class (expr/c ctc-stx
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#:arg? [arg? #t]
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#:positive [pos-blame 'from-macro]
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#:negative [neg-blame 'use-site]
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#:macro [macro-name #f]
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#:name [expr-name not-given]
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#:context [ctx #f]
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#:phase [phase (syntax-local-phase-level)])
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#:attributes (c)
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#:commit
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(pattern y:expr
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#:with
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c (wrap-expr/c ctc-stx
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#'y
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#:arg? arg?
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#:positive pos-blame
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#:negative neg-blame
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#:name (if (eq? expr-name not-given)
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this-role
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expr-name)
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#:macro macro-name
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#:context (or ctx (this-context-syntax))
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#:phase phase)))
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(provide-syntax-class/contract
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[expr/c (syntax-class/c (syntax?)
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(#:arg? any/c
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#:positive (or/c syntax? string? module-path-index?
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'from-macro 'use-site 'unknown)
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#:negative (or/c syntax? string? module-path-index?
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'from-macro 'use-site 'unknown)
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#:name (or/c identifier? string? symbol? #f)
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#:macro (or/c identifier? string? symbol? #f)
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#:context (or/c syntax? #f)
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#:phase exact-integer?))])
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