<> <> <> <> <> <> <> DIRECTORY AlpineEnvironment; LeaderPageFormat: DEFINITIONS = BEGIN AccessList: TYPE = AlpineEnvironment.AccessList; ByteCount: TYPE = AlpineEnvironment.ByteCount; FileVersion: TYPE = AlpineEnvironment.FileVersion; PageCount: TYPE = AlpineEnvironment.PageCount; Property: TYPE = AlpineEnvironment.Property; UserProperty: TYPE = AlpineEnvironment.UserProperty; UserPropertyType: TYPE = AlpineEnvironment.UserPropertyType; NSTime: TYPE = LONG CARDINAL; -- convention from BasicTime interface <> PickledProperty: TYPE = MACHINE DEPENDENT {nil (0), byteLength (1), createTime (2), highWaterMark (3), modifyAccess (4), owner (5), readAccess(6), stringName (7), version (8), userProperty (9)}; propertyPickleMap: PACKED ARRAY Property OF PickledProperty = [byteLength: byteLength, createTime: createTime, highWaterMark: highWaterMark, modifyAccess: modifyAccess, owner: owner, readAccess: readAccess, stringName: stringName, version: version]; <> LeaderPageRecord: TYPE = MACHINE DEPENDENT RECORD [ seal (0): CARDINAL, dataStart (1): LeaderPageOffset, dataEnd (2): LeaderPageOffset, spare (3): ARRAY [3..offsetData) OF UNSPECIFIED, data (offsetData): ARRAY [offsetData..AlpineEnvironment.wordsPerPage) OF UNSPECIFIED ]; LeaderPageOffset: TYPE = CARDINAL; offsetData: LeaderPageOffset = 10; sealLeaderPageRecord: CARDINAL = 43875; PropertyRep: TYPE = MACHINE DEPENDENT RECORD [ size (0: 0..7): [0..AlpineEnvironment.wordsPerPage), property (0: 8..15): PickledProperty, value (1): SELECT COMPUTED PickledProperty FROM byteLength => [byteLength (1): ByteCount], createTime => [createTime (1): NSTime], highWaterMark => [highWaterMark (1): PageCount], modifyAccess => [modifyAccess (1): AccessListRep], owner => [owner (1): StringRep], readAccess => [readAccess (1): AccessListRep], stringName => [stringName (1): StringRep], version => [version (1): FileVersion], userProperty => [userPropertyValue (1): UserPropertyValueRep] ENDCASE]; AccessListRep: TYPE = MACHINE DEPENDENT RECORD [ count: CARDINAL, principals: --ARRAY [0..count) OF-- StringRep]; StringRep: TYPE = MACHINE DEPENDENT RECORD [ length: CARDINAL, text: PACKED ARRAY [0..0) OF CHARACTER]; PickledUserType: TYPE = MACHINE DEPENDENT {nil (0), longCardinal (1), rope (2)}; PickledUserTypeMap: ARRAY UserPropertyType OF PickledUserType = [longCardinal: longCardinal, rope: rope]; UserPropertyValueRep: TYPE = MACHINE DEPENDENT RECORD [ name: StringRep -- value: UserValueRep -- ]; UserValueRep: TYPE = MACHINE DEPENDENT RECORD [ type (0): PickledUserType, val (1): SELECT COMPUTED PickledUserType FROM nil => NULL, longCardinal => [longCardinal (1): LONG CARDINAL], rope => [rope (1): StringRep] ENDCASE]; <> LeaderPageHandle: TYPE = REF LeaderPageObject; LeaderPageObject: PUBLIC TYPE = RECORD [ nPages: CARDINAL, record: LeaderPageRecord, moreData: SEQUENCE COMPUTED CARDINAL OF ARRAY[0..AlpineEnvironment.wordsPerPage) OF UNSPECIFIED ]; END. <> <> <> <<>> <<>>