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23 lines
849 B
Plaintext
23 lines
849 B
Plaintext
--1 Common: Structures with Common Implementations.
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-- This module defines the abstract parameters of tense, polarity, and
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-- anteriority, which are used in [``Phrase`` Phrase.html] to generate different
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-- forms of sentences. Together they give 4 x 2 x 2 = 16 sentence forms.
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-- These tenses are defined for all languages in the library. More tenses
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-- can be defined in the language extensions, e.g. the "passé simple" of
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-- Romance languages in [``ExtraRomance`` ../romance/ExtraRomance.gf].
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abstract Tense = Common ** {
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fun
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TTAnt : Tense -> Ant -> Temp ;
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PPos, PNeg : Pol ; -- I sleep/don't sleep
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TPres : Tense ;
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ASimul : Ant ;
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TPast, TFut, TCond : Tense ; -- I slept/will sleep/would sleep --# notpresent
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AAnter : Ant ; -- I have slept --# notpresent
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}
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