2001-06-06 20:40:57 +01:00
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:- protocol(characterp).
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:- info([
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version is 1.0,
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2003-02-05 00:15:28 +00:00
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author is 'Paulo Moura',
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2001-06-06 20:40:57 +01:00
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date is 2000/7/24,
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comment is 'Character protocol.']).
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:- public(is_alphanumeric/1).
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:- mode(is_alphanumeric(+char), zero_or_one).
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:- info(is_alphanumeric/1, [
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comment is 'True if the argument is an alphanumeric character.',
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argnames is ['Term']]).
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:- public(is_alpha/1).
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:- mode(is_alpha(+char), zero_or_one).
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:- info(is_alpha/1, [
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comment is 'True if the argument is a letter or an underscore.',
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argnames is ['Term']]).
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:- public(is_letter/1).
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:- mode(is_letter(+char), zero_or_one).
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:- info(is_letter/1, [
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comment is 'True if the argument is a letter.',
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argnames is ['Term']]).
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:- public(is_bin_digit/1).
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:- mode(is_bin_digit(+char), zero_or_one).
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:- info(is_bin_digit/1, [
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comment is 'True if the argument is a binary digit.',
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argnames is ['Term']]).
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:- public(is_octal_digit/1).
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:- mode(is_octal_digit(+char), zero_or_one).
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:- info(is_octal_digit/1, [
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comment is 'True if the argument is an octal digit.',
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argnames is ['Term']]).
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:- public(is_dec_digit/1).
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:- mode(is_dec_digit(+char), zero_or_one).
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:- info(is_dec_digit/1, [
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comment is 'True if the argument is a decimal digit.',
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argnames is ['Term']]).
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:- public(is_hex_digit/1).
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:- mode(is_hex_digit(+char), zero_or_one).
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:- info(is_hex_digit/1, [
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comment is 'True if the argument is an hexadecimal digit.',
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argnames is ['Term']]).
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:- public(is_lower_case/1).
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:- mode(is_lower_case(+char), zero_or_one).
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:- info(is_lower_case/1, [
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comment is 'True if the argument is a lower case letter.',
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argnames is ['Term']]).
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:- public(is_upper_case/1).
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:- mode(is_upper_case(+char), zero_or_one).
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:- info(is_upper_case/1, [
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comment is 'True if the argument is a upper case letter.',
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argnames is ['Term']]).
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:- public(is_vowel/1).
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:- mode(is_vowel(+char), zero_or_one).
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:- info(is_vowel/1, [
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comment is 'True if the argument is a vowel.',
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argnames is ['Term']]).
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:- public(is_layout/1).
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:- mode(is_layout(+char), zero_or_one).
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:- info(is_layout/1, [
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comment is 'True if the argument is a layout character.',
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argnames is ['Term']]).
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:- public(lower_upper/2).
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:- mode(lower_upper(?char, ?char), zero_or_more).
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:- mode(lower_upper(+char, ?char), zero_or_one).
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:- mode(lower_upper(?char, +char), zero_or_one).
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:- info(lower_upper/2, [
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comment is 'Converts between lower and upper case letters.',
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argnames is ['Term1', 'Term2']]).
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:- end_protocol.
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