package comby-kernel

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Source file metasyntax.ml

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include Types.Metasyntax

let default_syntax =
  [ Hole (Everything, Delimited (Some ":[", Some "]"))
  ; Hole (Expression, Delimited (Some ":[", Some ":e]"))
  ; Hole (Alphanum, Delimited (Some ":[[", Some "]]"))
  ; Hole (Non_space, Delimited (Some ":[", Some ".]"))
  ; Hole (Line, Delimited (Some ":[", Some "\\n]"))
  ; Hole (Blank, Delimited (Some ":[ ", Some "]"))
  ; Hole (Expression, Reserved_identifiers ["α"; "β"; "γ"; "δ"; "ε"; "ζ"; "η"; "θ"; "ι"; "κ"; "λ"; "μ"; "ξ"; "π"; "ρ"; "ς"; "σ"; "τ"; "υ"; "φ"; "χ"; "ψ"; "ω"])
  ; Hole (Everything, Reserved_identifiers ["Γ"; "Δ"; "Θ"; "Λ"; "Ξ"; "Π"; "Σ"; "Φ"; "Ψ"; "Ω"])
  ; Regex (":[", '~', "]")
  ]

let default_identifier =
  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_"

let default_aliases =
  [ { pattern = "..."
    ; match_template = ":[_]"
    ; rule = None
    }
  ]

let default_metasyntax =
  { syntax = default_syntax
  ; identifier = default_identifier
  ; aliases = default_aliases
  }

let create { syntax; identifier; aliases } =
  let module Metasyntax = struct
    let syntax = syntax
    let identifier = identifier
    let aliases = aliases
  end
  in
  (module Metasyntax : Types.Metasyntax.S)

let default = create default_metasyntax

module Default = (val default)

(* In utop: Format.printf "%s@." @@ Matchers.Metasyntax.(json Matchers.Metasyntax.default_metasyntax);; *)
let json metasyntax =
  Yojson.Safe.pretty_to_string @@ to_yojson metasyntax
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