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< title > Logtalk built-in method: phrase/2< / title >
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< div class = "top-left" > Logtalk reference manual< / div >
< div class = "top-right" > Built-in method: phrase/2< / div >
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< div class = "navtop" > < a href = "../../index.html" > contents< / a > > < a href = "../index.html" > reference manual< / a > > < a href = "../index.html#methods" > built-in methods< / a > < / div >
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< h2 id = "methods_phrase2" class = "codenp" > phrase/2< / h2 >
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< h4 > Description< / h4 >
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< pre > phrase(NonTerminal, Input)< / pre >
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< p >
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True if the list < code > Input< / code > can be parsed using the specified non-terminal < code > NonTerminal< / code > . This method also accepts grammar rule bodies in the first argument (with the limitation that cuts are only supported in local calls).
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< / p >
< h4 > Template and modes< / h4 >
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< pre > phrase(+callable, ?list)< / pre >
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< h4 > Errors< / h4 >
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< dl >
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< dt > NonTerminal is a variable:< / dt >
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< dd > < code > instantiation_error< / code > < / dd >
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< dt > NonTerminal is neither a variable nor a callable term:< / dt >
< dd > < code > type_error(callable, NonTerminal)< / code > < / dd >
< dt > Input is neither a partial list nor a list:< / dt >
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< dd > < code > type_error(list, Input)< / code > < / dd >
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< dt > The grammar rule non-terminal NonTerminal is private:< / dt >
< dd > < code > permission_error(access, private_non_terminal, NonTerminal)< / code > < / dd >
< dt > The grammar rule non-terminal NonTerminal is protected:< / dt >
< dd > < code > permission_error(access, protected_non_terminal, NonTerminal)< / code > < / dd >
< dt > The grammar rule non-terminal NonTerminal is not declared:< / dt >
< dd > < code > existence_error(non_terminal_declaration, NonTerminal)< / code > < / dd >
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< / dl >
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< h4 > Examples< / h4 >
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< pre > | ?- sentence::phrase(sentence, [the, girl, likes, the, boy]).
yes
| ?- calculator::phrase(expr(Value), "1+2-3*4").
Value = -9
yes< / pre >
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< span > Copyright © < a href = "mailto:pmoura@logtalk.org" > Paulo Moura< / a > — < a href = "http://logtalk.org" > Logtalk.org< / a > < / span > < br / >
< span > Last updated on: October 26, 2006< / span >
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