Railroad Diagram of version range operators

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range-set:

range-set.ebnf

range-set   ::= range ( logical-or range )*

logical-or:

logical-or.ebnf

logical-or  ::= ' '* '||' ' '*

referenced by: range-set

range:

range.ebnf

range   ::= hyphen
           | simple ( ' ' simple )*
           | ''

referenced by: range-set

hyphen:

hyphen.ebnf

hyphen   ::= partial ' - ' partial

referenced by: range

simple:

simple.ebnf

simple   ::= primitive
           | partial
           | tilde
           | caret

referenced by: range

primitive:

primitive.ebnf

primitive   ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial

referenced by: simple

partial:

partial.ebnf

partial  ::= xr ( '.' xr ( '.' xr qualifier? )? )?

referenced by:

• caret
• hyphen
• primitive
• simple
• tilde

xr:

xr.ebnf

xr    ::= 'x'
        | 'X'
        | '*'
        | nr

referenced by: partial

nr:

nr.ebnf

nr    ::= '0'
        | ['1'-'9] ['0'-'9]*

referenced by:

• part
• xr

tilde:

tilde.ebnf

tilde    ::= '~' partial

referenced by: simple

caret:

caret.ebnf

caret    ::= '^' partial

referenced by: simple

qualifier:

qualifier.ebnf

qualifier   ::= ( '-' pre )? ( '+' build )?

referenced by: partial

pre:

pre.ebnf

pre     ::= parts

referenced by: qualifier

build:

build.ebnf

build   ::= parts

referenced by: qualifier

parts:

parts.ebnf

parts   ::= part ( '.' part )*

referenced by:

• build
• pre

part:

part.ebnf

part    ::= nr | [-0-9A-Za-z]+

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