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gf-core/lib/resource/abstract/Text.gf
2007-12-12 20:30:11 +00:00

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--1 Text: Texts
-- Texts are built from an empty text by adding $Phr$ases,
-- using as constructors the punctuation marks ".", "?", and "!".
-- Any punctuation mark can be attached to any kind of phrase.
abstract Text = Common ** {
fun
TEmpty : Text ; --
TFullStop : Phr -> Text -> Text ; -- John walks. ...
TQuestMark : Phr -> Text -> Text ; -- Are you OK? ...
TExclMark : Phr -> Text -> Text ; -- John walks! ...
}