Full Arboricx parsing in tricu
This commit is contained in:
666
lib/arboricx.tri
666
lib/arboricx.tri
@@ -1,654 +1,18 @@
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!import "base.tri" !Local
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!import "list.tri" !Local
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!import "bytes.tri" !Local
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!import "binary.tri" !Local
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!import "arboricx-manifest.tri" !Local
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arboricxMagic = [(65) (82) (66) (79) (82) (73) (67) (88)]
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arboricxMajorVersion = [(0) (1)]
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arboricxMinorVersion = [(0) (0)]
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arboricxManifestSectionId = [(0) (0) (0) (1)]
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arboricxNodesSectionId = [(0) (0) (0) (2)]
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errMissingSection = 4
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errUnsupportedVersion = 5
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errDuplicateSection = 6
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errDuplicateNode = 7
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errInvalidNodePayload = 8
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errMissingNode = 9
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nodePayloadLeafTag = 0
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nodePayloadStemTag = 1
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nodePayloadForkTag = 2
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readArboricxMagic = (bs : expectBytes arboricxMagic bs)
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readArboricxHeader = (bs :
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bindResult (readArboricxMagic bs)
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(_ afterMagic :
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bindResult (readBytes 2 afterMagic)
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(majorVersion afterMajor :
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bindResult (readBytes 2 afterMajor)
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(minorVersion afterMinor :
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bindResult (readBytes 4 afterMinor)
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(sectionCount afterSectionCount :
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bindResult (readBytes 8 afterSectionCount)
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(flags afterFlags :
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bindResult (readBytes 8 afterFlags)
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(dirOffset afterDirOffset :
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ok
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(pair majorVersion
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(pair minorVersion
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(pair sectionCount
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(pair flags dirOffset))))
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afterDirOffset)))))))
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readSectionRecord = (bs :
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bindResult (readBytes 4 bs)
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(sectionId afterSectionId :
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bindResult (readBytes 2 afterSectionId)
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(sectionVersion afterSectionVersion :
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bindResult (readBytes 2 afterSectionVersion)
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(sectionFlags afterSectionFlags :
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bindResult (readBytes 2 afterSectionFlags)
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(compression afterCompression :
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bindResult (readBytes 2 afterCompression)
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(digestAlgorithm afterDigestAlgorithm :
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bindResult (readBytes 8 afterDigestAlgorithm)
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(offset afterOffset :
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bindResult (readBytes 8 afterOffset)
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(length afterLength :
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bindResult (readBytes 32 afterLength)
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(digest afterDigest :
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ok
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(pair sectionId
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(pair sectionVersion
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(pair sectionFlags
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(pair compression
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(pair digestAlgorithm
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(pair offset
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(pair length digest)))))))
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afterDigest)))))))))
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readSectionDirectory_ = y (self bs sectionCount i acc :
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matchBool
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(ok (reverse acc) bs)
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(bindResult (readSectionRecord bs)
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(sectionRecord afterSectionRecord :
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self afterSectionRecord sectionCount (succ i) (pair sectionRecord acc)))
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(equal? i sectionCount))
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readSectionDirectory = (sectionCount bs : readSectionDirectory_ bs sectionCount 0 t)
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sectionRecordId = (sectionRecord :
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matchPair
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(sectionId _ : sectionId)
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sectionRecord)
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sectionRecordVersion = (sectionRecord :
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matchPair
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(_ payload :
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-- Read and validate a full Arboricx bundle.
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-- Returns (pair validManifest afterContainer).
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-- The manifest core fields are validated against expected values.
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readArboricxBundle = (bs :
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bindResult (readArboricxRequiredSections bs)
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(sections afterContainer :
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matchPair
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(sectionVersion _ : sectionVersion)
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payload)
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sectionRecord)
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sectionRecordFlags = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(sectionFlags _ : sectionFlags)
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payload2)
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payload)
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sectionRecord)
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sectionRecordCompression = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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(manifestBytes _ :
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bindResult (readManifest manifestBytes)
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(parsedManifest afterManifest :
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matchPair
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(compression _ : compression)
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payload3)
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payload2)
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payload)
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sectionRecord)
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sectionRecordDigestAlgorithm = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(_ payload4 :
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matchPair
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(digestAlgorithm _ : digestAlgorithm)
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payload4)
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payload3)
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payload2)
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payload)
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sectionRecord)
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sectionRecordOffset = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(_ payload4 :
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matchPair
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(_ payload5 :
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matchPair
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(offset _ : offset)
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payload5)
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payload4)
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payload3)
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payload2)
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payload)
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sectionRecord)
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sectionRecordLength = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(_ payload4 :
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matchPair
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(_ payload5 :
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matchPair
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(_ payload6 :
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matchPair
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(length _ : length)
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payload6)
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payload5)
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payload4)
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payload3)
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payload2)
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payload)
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sectionRecord)
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sectionRecordDigest = (sectionRecord :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(_ payload4 :
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matchPair
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(_ payload5 :
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matchPair
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(_ payload6 :
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matchPair
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(_ digest : digest)
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payload6)
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payload5)
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payload4)
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payload3)
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payload2)
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payload)
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sectionRecord)
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lookupSectionRecord_ = y (self directory sectionId :
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matchList
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nothing
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(sectionRecord rest :
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matchBool
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(just sectionRecord)
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(self rest sectionId)
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(bytesEq? sectionId (sectionRecordId sectionRecord)))
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directory)
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lookupSectionRecord = (sectionId directory : lookupSectionRecord_ directory sectionId)
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sectionDirectoryHasId?_ = y (self directory sectionId :
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matchList
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false
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(sectionRecord rest :
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or?
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(bytesEq? sectionId (sectionRecordId sectionRecord))
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(self rest sectionId))
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directory)
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sectionDirectoryHasId? = (sectionId directory : sectionDirectoryHasId?_ directory sectionId)
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sectionDirectoryHasDuplicateIds? = y (self directory :
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matchList
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false
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(sectionRecord rest :
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or?
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(sectionDirectoryHasId?_ rest (sectionRecordId sectionRecord))
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(self rest))
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directory)
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validateSectionDirectory = (directory rest :
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matchBool
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(err errDuplicateSection rest)
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(ok directory rest)
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(sectionDirectoryHasDuplicateIds? directory))
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byteSlice = (offset length bytes : bytesTake length (bytesDrop offset bytes))
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natMake = (bit rest :
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matchBool
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0
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(pair bit rest)
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(and? (equal? bit 0) (equal? rest 0)))
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natAdd = y (self a b :
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triage
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b
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(_ : b)
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(aBit aRest :
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triage
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a
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(_ : a)
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(bBit bRest :
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matchBool
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(natMake 0 (succ (self aRest bRest)))
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(natMake (matchBool (matchBool 0 1 bBit) (matchBool 1 0 bBit) aBit)
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(self aRest bRest))
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(and? (equal? aBit 1) (equal? bBit 1)))
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b)
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a)
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natDouble = (n : matchBool 0 (pair 0 n) (equal? n 0))
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natTimes256 = (n :
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natDouble
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(natDouble
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(natDouble
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(natDouble
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(natDouble
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(natDouble
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(natDouble
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(natDouble n))))))))
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byteNatShiftAppend_ = y (self byte acc i :
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matchBool
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acc
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(triage
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(natMake 0 (self 0 acc (succ i)))
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(_ : acc)
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(bit rest : natMake bit (self rest acc (succ i)))
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byte)
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(equal? i 8))
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byteNatShiftAppend = (byte acc : byteNatShiftAppend_ byte acc 0)
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beBytesToNat = (bytes :
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foldl
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(acc byte : byteNatShiftAppend byte acc)
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0
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bytes)
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u32BEBytesToNat = beBytesToNat
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u64BEBytesToNat = beBytesToNat
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arboricxHeaderMajorVersion = (header :
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matchPair
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(majorVersion _ : majorVersion)
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header)
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arboricxHeaderMinorVersion = (header :
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matchPair
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(_ payload :
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matchPair
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(minorVersion _ : minorVersion)
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payload)
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header)
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arboricxHeaderSectionCount = (header :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(sectionCount _ : sectionCount)
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payload2)
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payload)
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header)
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arboricxHeaderFlags = (header :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(flags _ : flags)
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payload3)
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payload2)
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payload)
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header)
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arboricxHeaderDirOffset = (header :
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matchPair
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(_ payload :
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matchPair
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(_ payload2 :
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matchPair
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(_ payload3 :
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matchPair
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(_ dirOffset : dirOffset)
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payload3)
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payload2)
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payload)
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header)
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validateArboricxHeader = (header rest :
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matchBool
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(ok header rest)
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(err errUnsupportedVersion rest)
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(and?
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(bytesEq? arboricxMajorVersion (arboricxHeaderMajorVersion header))
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(bytesEq? arboricxMinorVersion (arboricxHeaderMinorVersion header))))
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readArboricxContainer = (bs :
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bindResult (readArboricxHeader bs)
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(header afterHeader :
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bindResult (validateArboricxHeader header afterHeader)
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(validHeader afterValidHeader :
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bindResult (readSectionDirectory
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(u32BEBytesToNat (arboricxHeaderSectionCount validHeader))
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(bytesDrop (u64BEBytesToNat (arboricxHeaderDirOffset validHeader)) bs))
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(directory afterDirectory :
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bindResult (validateSectionDirectory directory afterDirectory)
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(validDirectory afterValidDirectory :
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ok (pair validHeader validDirectory) afterValidDirectory)))))
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sectionRecordOffsetNat = (sectionRecord :
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u64BEBytesToNat (sectionRecordOffset sectionRecord))
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sectionRecordLengthNat = (sectionRecord :
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u64BEBytesToNat (sectionRecordLength sectionRecord))
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extractSectionBytes = (sectionRecord containerBytes :
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byteSlice
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(sectionRecordOffsetNat sectionRecord)
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(sectionRecordLengthNat sectionRecord)
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containerBytes)
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extractSectionBytesResult = (sectionRecord containerBytes rest :
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(sectionBytes :
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matchBool
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(ok sectionBytes rest)
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(err errUnexpectedEof rest)
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(equal? (bytesLength sectionBytes) (sectionRecordLengthNat sectionRecord)))
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(extractSectionBytes sectionRecord containerBytes))
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lookupSectionBytes = (sectionId directory containerBytes :
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triage
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nothing
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(sectionRecord : just (extractSectionBytes sectionRecord containerBytes))
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(_ _ : nothing)
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(lookupSectionRecord sectionId directory))
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sectionBytesOrErr = (sectionId directory containerBytes rest :
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triage
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(err errMissingSection rest)
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(sectionRecord : extractSectionBytesResult sectionRecord containerBytes rest)
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(_ _ : err errMissingSection rest)
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(lookupSectionRecord sectionId directory))
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readArboricxSectionBytes = (sectionId bs :
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bindResult (readArboricxContainer bs)
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(container afterContainer :
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matchPair
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(_ directory : sectionBytesOrErr sectionId directory bs afterContainer)
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container))
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readArboricxRequiredSections = (bs :
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bindResult (readArboricxContainer bs)
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(container afterContainer :
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matchPair
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(_ directory :
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bindResult (sectionBytesOrErr arboricxManifestSectionId directory bs afterContainer)
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(manifestBytes _ :
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bindResult (sectionBytesOrErr arboricxNodesSectionId directory bs afterContainer)
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(nodesBytes _ :
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ok (pair manifestBytes nodesBytes) afterContainer)))
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container))
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readNodeRecord = (bs :
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bindResult (readBytes 32 bs)
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(nodeHash afterNodeHash :
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bindResult (readBytes 4 afterNodeHash)
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(payloadLength afterPayloadLength :
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bindResult (readBytes (u32BEBytesToNat payloadLength) afterPayloadLength)
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(payload afterPayload :
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ok
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(pair nodeHash
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(pair payloadLength payload))
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afterPayload))))
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nodeRecordHash = (nodeRecord :
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matchPair
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(nodeHash _ : nodeHash)
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nodeRecord)
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nodeRecordPayloadLength = (nodeRecord :
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matchPair
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(_ payload :
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matchPair
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(payloadLength _ : payloadLength)
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payload)
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nodeRecord)
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nodeRecordPayload = (nodeRecord :
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matchPair
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(_ payload :
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matchPair
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(_ nodePayload : nodePayload)
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payload)
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nodeRecord)
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nodePayloadKind = (nodePayload : bytesHead nodePayload)
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nodePayloadHasTag? = (tag nodePayload :
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triage
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false
|
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(actualTag : byteEq? actualTag tag)
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(_ _ : false)
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(nodePayloadKind nodePayload))
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nodePayloadLeaf? = (nodePayload : bytesEq? [(0)] nodePayload)
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nodePayloadStem? = (nodePayload :
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and?
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(nodePayloadHasTag? nodePayloadStemTag nodePayload)
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(equal? (bytesLength nodePayload) 33))
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nodePayloadFork? = (nodePayload :
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and?
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(nodePayloadHasTag? nodePayloadForkTag nodePayload)
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(equal? (bytesLength nodePayload) 65))
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nodePayloadValid? = (nodePayload :
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||||
or?
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||||
(nodePayloadLeaf? nodePayload)
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||||
(or?
|
||||
(nodePayloadStem? nodePayload)
|
||||
(nodePayloadFork? nodePayload)))
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||||
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||||
nodePayloadStemChildHash = (nodePayload : bytesTake 32 (bytesDrop 1 nodePayload))
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nodePayloadForkLeftHash = (nodePayload : bytesTake 32 (bytesDrop 1 nodePayload))
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nodePayloadForkRightHash = (nodePayload : bytesTake 32 (bytesDrop 33 nodePayload))
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||||
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nodeRecordPayloadValid? = (nodeRecord : nodePayloadValid? (nodeRecordPayload nodeRecord))
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||||
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||||
nodeRecordsHaveInvalidPayload? = y (self nodeRecords :
|
||||
matchList
|
||||
false
|
||||
(nodeRecord rest :
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||||
or?
|
||||
(not? (nodeRecordPayloadValid? nodeRecord))
|
||||
(self rest))
|
||||
nodeRecords)
|
||||
|
||||
nodeRecordsHaveHash? = y (self nodeRecords nodeHash :
|
||||
matchList
|
||||
false
|
||||
(nodeRecord rest :
|
||||
or?
|
||||
(bytesEq? nodeHash (nodeRecordHash nodeRecord))
|
||||
(self rest nodeHash))
|
||||
nodeRecords)
|
||||
|
||||
nodeRecordsHaveDuplicateHashes? = y (self nodeRecords :
|
||||
matchList
|
||||
false
|
||||
(nodeRecord rest :
|
||||
or?
|
||||
(nodeRecordsHaveHash? rest (nodeRecordHash nodeRecord))
|
||||
(self rest))
|
||||
nodeRecords)
|
||||
|
||||
lookupNodeRecord_ = y (self nodeRecords nodeHash :
|
||||
matchList
|
||||
nothing
|
||||
(nodeRecord rest :
|
||||
matchBool
|
||||
(just nodeRecord)
|
||||
(self rest nodeHash)
|
||||
(bytesEq? nodeHash (nodeRecordHash nodeRecord)))
|
||||
nodeRecords)
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||||
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||||
lookupNodeRecord = (nodeHash nodeRecords : lookupNodeRecord_ nodeRecords nodeHash)
|
||||
|
||||
nodeRecordChildHashes = (nodeRecord :
|
||||
(nodePayload :
|
||||
matchBool
|
||||
t
|
||||
(matchBool
|
||||
(pair (nodePayloadStemChildHash nodePayload) t)
|
||||
(pair (nodePayloadForkLeftHash nodePayload)
|
||||
(pair (nodePayloadForkRightHash nodePayload) t))
|
||||
(nodePayloadStem? nodePayload))
|
||||
(nodePayloadLeaf? nodePayload))
|
||||
(nodeRecordPayload nodeRecord))
|
||||
|
||||
nodeHashPresent? = (nodeHash nodeRecords : nodeRecordsHaveHash? nodeRecords nodeHash)
|
||||
|
||||
nodeChildHashesPresent? = y (self childHashes nodeRecords :
|
||||
matchList
|
||||
true
|
||||
(childHash rest :
|
||||
and?
|
||||
(nodeHashPresent? childHash nodeRecords)
|
||||
(self rest nodeRecords))
|
||||
childHashes)
|
||||
|
||||
nodeRecordChildrenPresent? = (nodeRecord nodeRecords :
|
||||
nodeChildHashesPresent? (nodeRecordChildHashes nodeRecord) nodeRecords)
|
||||
|
||||
nodeRecordsClosed? = y (self nodeRecords allNodeRecords :
|
||||
matchList
|
||||
true
|
||||
(nodeRecord rest :
|
||||
and?
|
||||
(nodeRecordChildrenPresent? nodeRecord allNodeRecords)
|
||||
(self rest allNodeRecords))
|
||||
nodeRecords)
|
||||
|
||||
validateNodeRecords = (nodeRecords rest :
|
||||
matchBool
|
||||
(err errInvalidNodePayload rest)
|
||||
(matchBool
|
||||
(err errDuplicateNode rest)
|
||||
(matchBool
|
||||
(ok nodeRecords rest)
|
||||
(err errMissingNode rest)
|
||||
(nodeRecordsClosed? nodeRecords nodeRecords))
|
||||
(nodeRecordsHaveDuplicateHashes? nodeRecords))
|
||||
(nodeRecordsHaveInvalidPayload? nodeRecords))
|
||||
|
||||
readNodeRecords_ = y (self bs nodeCount i acc :
|
||||
matchBool
|
||||
(ok (reverse acc) bs)
|
||||
(bindResult (readNodeRecord bs)
|
||||
(nodeRecord afterNodeRecord :
|
||||
self afterNodeRecord nodeCount (succ i) (pair nodeRecord acc)))
|
||||
(equal? i nodeCount))
|
||||
|
||||
readNodeRecords = (nodeCount bs : readNodeRecords_ bs nodeCount 0 t)
|
||||
|
||||
readNodesSection = (bs :
|
||||
bindResult (readBytes 8 bs)
|
||||
(nodeCount afterNodeCount :
|
||||
bindResult (readNodeRecords (u64BEBytesToNat nodeCount) afterNodeCount)
|
||||
(nodeRecords afterNodeRecords :
|
||||
bindResult (validateNodeRecords nodeRecords afterNodeRecords)
|
||||
(validNodeRecords afterValidNodeRecords :
|
||||
ok (pair nodeCount validNodeRecords) afterValidNodeRecords))))
|
||||
|
||||
readNodesSectionComplete = (bs :
|
||||
bindResult (readNodesSection bs)
|
||||
(nodesSection afterNodesSection :
|
||||
matchBool
|
||||
(ok nodesSection afterNodesSection)
|
||||
(err errUnexpectedBytes afterNodesSection)
|
||||
(bytesNil? afterNodesSection)))
|
||||
|
||||
readArboricxNodesSection = (bs :
|
||||
bindResult (readArboricxContainer bs)
|
||||
(container afterContainer :
|
||||
matchPair
|
||||
(_ directory :
|
||||
bindResult (sectionBytesOrErr arboricxNodesSectionId directory bs afterContainer)
|
||||
(nodesBytes _ :
|
||||
bindResult (readNodesSectionComplete nodesBytes)
|
||||
(nodesSection _ : ok nodesSection afterContainer)))
|
||||
container))
|
||||
|
||||
nodesSectionCount = (nodesSection :
|
||||
matchPair
|
||||
(nodeCount _ : nodeCount)
|
||||
nodesSection)
|
||||
|
||||
nodesSectionRecords = (nodesSection :
|
||||
matchPair
|
||||
(_ nodeRecords : nodeRecords)
|
||||
nodesSection)
|
||||
|
||||
nodeRecordToTreeWith = (self nodeRecords nodeRecord :
|
||||
(nodePayload :
|
||||
matchBool
|
||||
(ok t t)
|
||||
(matchBool
|
||||
(bindResult (self (nodePayloadStemChildHash nodePayload) nodeRecords)
|
||||
(child _ : ok (t child) t))
|
||||
(bindResult (self (nodePayloadForkLeftHash nodePayload) nodeRecords)
|
||||
(left _ :
|
||||
bindResult (self (nodePayloadForkRightHash nodePayload) nodeRecords)
|
||||
(right _ : ok (pair left right) t)))
|
||||
(nodePayloadStem? nodePayload))
|
||||
(nodePayloadLeaf? nodePayload))
|
||||
(nodeRecordPayload nodeRecord))
|
||||
|
||||
nodeHashToTree = y (self nodeHash nodeRecords :
|
||||
triage
|
||||
(err errMissingNode t)
|
||||
(nodeRecord : nodeRecordToTreeWith self nodeRecords nodeRecord)
|
||||
(_ _ : err errMissingNode t)
|
||||
(lookupNodeRecord nodeHash nodeRecords))
|
||||
|
||||
readArboricxTreeFromHash = (rootHash bs :
|
||||
bindResult (readArboricxNodesSection bs)
|
||||
(nodesSection afterContainer :
|
||||
bindResult (nodeHashToTree rootHash (nodesSectionRecords nodesSection))
|
||||
(tree _ : ok tree afterContainer)))
|
||||
|
||||
readArboricxExecutableFromHash = readArboricxTreeFromHash
|
||||
(coreManifest metadataWithExtensions :
|
||||
bindResult (validateManifestCore coreManifest afterManifest)
|
||||
(validCore _ : ok (pair validCore metadataWithExtensions) afterContainer))
|
||||
parsedManifest))
|
||||
sections))
|
||||
|
||||
Reference in New Issue
Block a user