You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
682 B
27 lines
682 B
// AST factories
|
|
{
|
|
const attr = (name, args) => ({ name, args })
|
|
}
|
|
|
|
// Attributes
|
|
Attrs = LATTR l:AttrList RATTR { return l }
|
|
AttrList = h:Attr t:(COMMA @Attr)* { return [h].concat(t) }
|
|
/ '' { return [] }
|
|
Attr = name:Ident args:(LPAREN @AttrArgs RPAREN)? { return attr(name, args || []) }
|
|
AttrArgs = h:AttrArg t:(COMMA @AttrArg)* { return [h].concat(t) }
|
|
/ '' { return [] }
|
|
AttrArg = Ident / Number
|
|
|
|
// Terminals
|
|
Ident = h:[a-zA-Z_] t:[0-9a-zA-Z_]* WS { return h + t.join('') }
|
|
Number = digits:[0-9]+ WS { return parseInt(digits.join(''), 10) }
|
|
|
|
// Terminal symbols
|
|
LPAREN = '(' WS
|
|
RPAREN = ')' WS
|
|
COMMA = ',' WS
|
|
LATTR = '[[' WS
|
|
RATTR = ']]' WS
|
|
|
|
// Misc
|
|
WS = [ \t\r\n]*
|