Support all Xpath 2.0 functions

[frederikbosch]

Source: Saxon

• [x] fn:abs
• [ ] fn:adjust-dateTime-to-timezone
• [ ] fn:adjust-dateTime-to-timezone
• [ ] fn:adjust-date-to-timezone
• [ ] fn:adjust-date-to-timezone
• [ ] fn:adjust-time-to-timezone
• [ ] fn:adjust-time-to-timezone
• [x] fn:avg
• [ ] fn:base-uri
• [ ] fn:base-uri
• [x] fn:boolean
• [x] fn:ceiling
• [x] fn:codepoints-to-string
• [ ] fn:collection
• [x] fn:compare
• [ ] fn:compare
• [x] fn:concat
• [x] fn:contains
• [ ] fn:contains
• [x] fn:count
• [ ] xslt:current
• [x] fn:current-date
• [x] fn:current-dateTime
• [x] xslt:current-group
• [x] xslt:current-grouping-key
• [x] fn:current-time
• [ ] fn:data
• [x] fn:day-from-date
• [x] fn:day-from-dateTime
• [x] fn:days-from-duration
• [ ] fn:deep-equal
• [ ] fn:deep-equal
• [ ] fn:default-collation
• [ ] fn:distinct-nodes
• [x] fn:distinct-values
• [ ] fn:distinct-values
• [ ] fn:doc
• [ ] xslt:document
• [ ] xslt:document
• [ ] fn:document-uri
• [ ] xslt:element-available
• [ ] fn:empty
• [x] fn:encode-for-uri
• [x] fn:ends-with
• [ ] fn:ends-with
• [ ] fn:error
• [ ] fn:error
• [ ] fn:escape-uri
• [ ] fn:exactly-one
• [ ] fn:exists
• [ ] fn:expanded-QName
• [x] fn:false
• [x] fn:floor
• [x] xslt:format-date
• [ ] xslt:format-date
• [x] xslt:format-dateTime
• [ ] xslt:format-dateTime
• [ ] xslt:format-number
• [ ] xslt:format-number
• [x] xslt:format-time
• [ ] xslt:format-time
• [ ] xslt:function-available
• [ ] xslt:function-available
• [ ] xslt:generate-id
• [ ] xslt:generate-id
• [x] fn:hours-from-dateTime
• [x] fn:hours-from-duration
• [x] fn:hours-from-time
• [ ] fn:id
• [ ] fn:idref
• [ ] fn:implicit-timezone
• [x] fn:index-of
• [ ] fn:index-of
• [ ] fn:input
• [x] fn:in-scope-prefixes
• [x] fn:insert-before
• [ ] xslt:key
• [ ] fn:lang
• [x] fn:last
• [ ] fn:local-name
• [ ] fn:local-name
• [ ] fn:local-name-from-QName
• [x] fn:lower-case
• [x] fn:matches
• [ ] fn:matches
• [x] fn:max
• [ ] fn:max
• [x] fn:min
• [ ] fn:min
• [x] fn:minutes-from-dateTime
• [x] fn:minutes-from-duration
• [x] fn:minutes-from-time
• [x] fn:month-from-date
• [x] fn:month-from-dateTime
• [x] fn:months-from-duration
• [ ] fn:name
• [ ] fn:name
• [ ] fn:namespace-uri
• [ ] fn:namespace-uri
• [ ] fn:namespace-uri-for-prefix
• [ ] fn:namespace-uri-from-QName
• [ ] fn:node-kind
• [ ] fn:node-name
• [x] fn:normalize-space
• [ ] fn:normalize-space
• [ ] fn:normalize-unicode
• [ ] fn:normalize-unicode
• [x] fn:not
• [ ] fn:number
• [ ] fn:number
• [ ] fn:one-or-more
• [x] fn:position
• [ ] xslt:regex-group
• [x] fn:remove
• [x] fn:replace
• [ ] fn:replace
• [ ] fn:resolve-QName
• [ ] fn:resolve-uri
• [ ] fn:resolve-uri
• [x] fn:reverse
• [ ] fn:root
• [ ] fn:root
• [x] fn:round
• [x] fn:round-half-to-even
• [x] fn:round-half-to-even
• [x] fn:seconds-from-dateTime
• [x] fn:seconds-from-duration
• [x] fn:seconds-from-time
• [ ] fn:sequence-node-identical
• [x] fn:starts-with
• [ ] fn:starts-with
• [x] fn:string
• [ ] fn:string
• [x] fn:string-join
• [x] fn:string-length
• [ ] fn:string-length
• [x] fn:string-to-codepoints
• [x] fn:subsequence
• [x] fn:subsequence
• [x] fn:substring
• [ ] fn:substring
• [x] fn:substring-after
• [ ] fn:substring-after
• [x] fn:substring-before
• [ ] fn:substring-before
• [ ] fn:subtract-dateTimes-yielding-dayTimeDuration
• [ ] fn:subtract-dateTimes-yielding-yearMonthDuration
• [x] fn:sum
• [ ] xslt:system-property
• [ ] fn:timezone-from-date
• [ ] fn:timezone-from-dateTime
• [ ] fn:timezone-from-time
• [x] fn:tokenize
• [ ] fn:tokenize
• [ ] fn:trace
• [x] fn:translate
• [x] fn:true
• [x] fn:unordered
• [ ] xslt:unparsed-entity-public-id
• [ ] xslt:unparsed-entity-uri
• [ ] xslt:unparsed-text
• [ ] xslt:unparsed-text
• [x] fn:upper-case
• [x] fn:year-from-date
• [x] fn:year-from-dateTime
• [x] fn:years-from-duration
• [ ] fn:zero-or-one