1.2 KiB
The definitions of Atom, ws, and linecomment are as given in the Preserves text syntax.
{:.postcard-grammar.textsyntax}
| Document | := | Expr⋆ ws
| Expr | := | ws (SimpleExpr | Punct)
| SimpleExpr | := | Compound | Embedded | Annotated | Atom
| Compound | := | Sequence | Record | Block | Group | Set
| Punct | := | , | ; | :+
{:.postcard-grammar.textsyntax}
| Sequence | := | [ Expr⋆ Trailer ws ]
| Record | := | < Expr⋆ Trailer ws >
| Block | := | { Expr⋆ Trailer ws }
| Group | := | ( Expr⋆ Trailer ws )
| Set | := | #{ Expr⋆ Trailer ws }
{:.postcard-grammar.textsyntax} | Trailer | := | Annotation⋆
{:.postcard-grammar.textsyntax}
| Embedded | := | #! SimpleExpr
| Annotated | := | Annotation SimpleExpr
| Annotation | := | @ SimpleExpr | # ((space | tab) linecomment) (cr | lf)