Expression Grammar

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jasel-lewis edited this page Apr 10, 2013 · 9 revisions

<phrase> ::= <term> {<addop> <term>}
<term>   ::= <factor> {<mulop> <factor>}
<factor> ::= -<item>
           | <item>
<item>   ::= Number
           | (<phrase>)
<addop>  ::= +
           | -
<mulop>  ::= *
           | /

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