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Annexe : syntax

<reglo-file>::=<declaration-list>
<declaration-list>::=<declaration>
<declaration>  <declaration-list>
<declaration>::=<ident>( <ident-list>) = <expression>;
<ident-list>::=<ident>
<ident>, <ident-list>
<monomial>::=<atom>
[<atom-list>]
<atom-list>::=<atom>  ∣  <atom>, <atom-list>
 
<atom>::=<ident>
- <ident>
~<ident>
<expression>::=<monomial>
 <expression> . <expression>
 <expression>*
 <expression> + <expression>
~~
eps( <expression>)
prefix( <expression>)
< <ident>( <monomial-list>) >
< <ident>>

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