¶ Syntax Diagrams
Generalized MSL syntax is described in this wiki using railroad diagrams and Extended Backus-Naur Form (EBNF) notation.
¶ EBNF
::= literal required [range] ( choice | another-choice ) optional? repeated+ optional-repeated*
¶ MSL
::= prelude | machine | world | stream | view | canon | atom | selector | value | transform | hash | comment
¶ prelude
::= ( msl key ( selector | value | transform )* hash? comment? )
¶ machine
::= ( m key ( machine | world | stream | view | canon | atom | selector | value | transform )* hash? comment? )
¶ world
::= ( w key ( machine | world | stream | view | canon | atom | selector | value | transform )* hash? comment? )
¶ stream
::= ( s key ( machine | world | stream | view | canon | atom | selector | value | transform )* hash? comment? )
¶ view
::= ( v key ( machine | world | stream | view | canon | atom | selector | value | transform )* hash? comment? )
¶ canon
::= ( c key ( canon | atom | selector | value | transform )* hash? comment? )
¶ atom
::= ( @ key ( machine | world | stream | view | canon | atom | selector | value | transform )* hash? comment? )
¶ key
::= [a-zA-Z]+ ( -? [0-9a-zA-Z]+ )*
¶ selector
::= : key | / regexp / regexp-env? | data-type
¶ value
::= char*
¶ char
::= [http://www.w3.org/TR/xml#NT-Char]
¶ transform
::= [ ( filespec | url ) ] | format
¶ filespec
::= [http://en.wikipedia.org/wiki/File_URI_scheme]
¶ url
::= [http://en.wikipedia.org/wiki/Uniform_Resource_Identifier]
¶ datatype
::=( d key ( selector | value )* comment? )
¶ format
::=( f key ( format | selector | value )* comment? )
¶ hash
::= # sha-256
¶ sha-256
::= [https://en.wikipedia.org/wiki/SHA-2]
¶ comment
::= // value
