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67 lines
2.8 KiB
Racket
67 lines
2.8 KiB
Racket
#lang racket/base
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(require racket/file
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racket/list
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racket/path
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sugar/define
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"private/cache-utils.rkt"
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"private/log.rkt"
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"setup.rkt")
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;; The cache is a hash with paths as keys.
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;; The cache values are also hashes, with key/value pairs for that path.
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(define (cache-directory? path)
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(and (directory-exists? path)
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(member (path->string (last (explode-path path))) default-cache-names)))
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(define+provide (reset-cache [starting-dir (current-project-root)])
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(unless (and (path-string? starting-dir) (directory-exists? starting-dir))
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(raise-argument-error 'reset-cache "path-string to existing directory" starting-dir))
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(for ([path (in-directory starting-dir)]
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#:when (cache-directory? path))
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(message (format "removing cache directory: ~a" path))
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(delete-directory/files path)))
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(define ((path-error-handler caller-name path-or-path-string) e)
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(raise-argument-error caller-name "valid path or path-string" path-or-path-string))
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(define-namespace-anchor cache-module-ns)
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(define (fetch-val path subkey)
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(parameterize ([current-namespace (make-base-namespace)])
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;; brings in currently instantiated params (unlike namespace-require)
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(define outer-ns (namespace-anchor->namespace cache-module-ns))
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(namespace-attach-module outer-ns 'pollen/setup)
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(dynamic-require path subkey)))
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(define cached-require-base
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(let ([ram-cache (make-hash)])
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(λ (path-or-path-string subkey caller-name)
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(define path
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(with-handlers ([exn:fail? (path-error-handler caller-name path-or-path-string)])
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(path->complete-path (if (path? path-or-path-string)
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path-or-path-string
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(string->path path-or-path-string)))))
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(unless (file-exists? path)
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(raise-argument-error caller-name "path to existing file" path-or-path-string))
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(cond
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[(setup:compile-cache-active path)
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(define key (paths->key 'source path))
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(define (convert-path-to-cache-record)
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(when (let ([crs (current-render-source)])
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(and crs (not (equal? crs path))))
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(message (format "transitively loading /~a" (find-relative-path (current-project-root) path))))
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(path->hash path))
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(define (get-cache-record) (cache-ref! key convert-path-to-cache-record))
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(define ram-cache-record (hash-ref! ram-cache key get-cache-record))
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(hash-ref ram-cache-record subkey)]
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[else (fetch-val path subkey)]))))
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(define+provide (cached-require path-string subkey)
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(cached-require-base path-string subkey 'cached-require))
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(define+provide (cached-doc path-string)
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(cached-require-base path-string pollen-main-export 'cached-doc))
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(define+provide (cached-metas path-string)
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(cached-require-base path-string pollen-meta-export 'cached-metas)) |