зеркало из https://github.com/github/ruby.git
205 строки
7.3 KiB
C
205 строки
7.3 KiB
C
/**
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* @file pm_char.h
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*
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* Functions for working with characters and strings.
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*/
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#ifndef PRISM_CHAR_H
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#define PRISM_CHAR_H
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#include "prism/defines.h"
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#include "prism/util/pm_newline_list.h"
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#include <stdbool.h>
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#include <stddef.h>
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/**
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* Returns the number of characters at the start of the string that are
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* whitespace. Disallows searching past the given maximum number of characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @return The number of characters at the start of the string that are
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* whitespace.
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*/
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size_t pm_strspn_whitespace(const uint8_t *string, ptrdiff_t length);
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/**
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* Returns the number of characters at the start of the string that are
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* whitespace while also tracking the location of each newline. Disallows
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* searching past the given maximum number of characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @param newline_list The list of newlines to populate.
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* @return The number of characters at the start of the string that are
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* whitespace.
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*/
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size_t pm_strspn_whitespace_newlines(const uint8_t *string, ptrdiff_t length, pm_newline_list_t *newline_list);
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/**
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* Returns the number of characters at the start of the string that are inline
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* whitespace. Disallows searching past the given maximum number of characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @return The number of characters at the start of the string that are inline
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* whitespace.
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*/
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size_t pm_strspn_inline_whitespace(const uint8_t *string, ptrdiff_t length);
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/**
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* Returns the number of characters at the start of the string that are decimal
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* digits. Disallows searching past the given maximum number of characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @return The number of characters at the start of the string that are decimal
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* digits.
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*/
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size_t pm_strspn_decimal_digit(const uint8_t *string, ptrdiff_t length);
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/**
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* Returns the number of characters at the start of the string that are
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* hexadecimal digits. Disallows searching past the given maximum number of
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* characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @return The number of characters at the start of the string that are
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* hexadecimal digits.
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*/
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size_t pm_strspn_hexadecimal_digit(const uint8_t *string, ptrdiff_t length);
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/**
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* Returns the number of characters at the start of the string that are octal
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* digits or underscores. Disallows searching past the given maximum number of
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* characters.
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*
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* If multiple underscores are found in a row or if an underscore is
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* found at the end of the number, then the invalid pointer is set to the index
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* of the first invalid underscore.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @param invalid The pointer to set to the index of the first invalid
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* underscore.
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* @return The number of characters at the start of the string that are octal
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* digits or underscores.
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*/
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size_t pm_strspn_octal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
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/**
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* Returns the number of characters at the start of the string that are decimal
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* digits or underscores. Disallows searching past the given maximum number of
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* characters.
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*
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* If multiple underscores are found in a row or if an underscore is
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* found at the end of the number, then the invalid pointer is set to the index
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* of the first invalid underscore.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @param invalid The pointer to set to the index of the first invalid
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* underscore.
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* @return The number of characters at the start of the string that are decimal
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* digits or underscores.
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*/
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size_t pm_strspn_decimal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
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/**
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* Returns the number of characters at the start of the string that are
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* hexadecimal digits or underscores. Disallows searching past the given maximum
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* number of characters.
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*
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* If multiple underscores are found in a row or if an underscore is
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* found at the end of the number, then the invalid pointer is set to the index
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* of the first invalid underscore.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @param invalid The pointer to set to the index of the first invalid
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* underscore.
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* @return The number of characters at the start of the string that are
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* hexadecimal digits or underscores.
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*/
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size_t pm_strspn_hexadecimal_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
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/**
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* Returns the number of characters at the start of the string that are regexp
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* options. Disallows searching past the given maximum number of characters.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @return The number of characters at the start of the string that are regexp
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* options.
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*/
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size_t pm_strspn_regexp_option(const uint8_t *string, ptrdiff_t length);
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/**
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* Returns the number of characters at the start of the string that are binary
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* digits or underscores. Disallows searching past the given maximum number of
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* characters.
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*
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* If multiple underscores are found in a row or if an underscore is
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* found at the end of the number, then the invalid pointer is set to the index
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* of the first invalid underscore.
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*
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* @param string The string to search.
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* @param length The maximum number of characters to search.
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* @param invalid The pointer to set to the index of the first invalid
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* underscore.
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* @return The number of characters at the start of the string that are binary
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* digits or underscores.
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*/
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size_t pm_strspn_binary_number(const uint8_t *string, ptrdiff_t length, const uint8_t **invalid);
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/**
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* Returns true if the given character is a whitespace character.
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*
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* @param b The character to check.
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* @return True if the given character is a whitespace character.
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*/
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bool pm_char_is_whitespace(const uint8_t b);
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/**
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* Returns true if the given character is an inline whitespace character.
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*
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* @param b The character to check.
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* @return True if the given character is an inline whitespace character.
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*/
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bool pm_char_is_inline_whitespace(const uint8_t b);
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/**
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* Returns true if the given character is a binary digit.
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*
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* @param b The character to check.
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* @return True if the given character is a binary digit.
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*/
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bool pm_char_is_binary_digit(const uint8_t b);
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/**
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* Returns true if the given character is an octal digit.
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*
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* @param b The character to check.
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* @return True if the given character is an octal digit.
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*/
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bool pm_char_is_octal_digit(const uint8_t b);
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/**
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* Returns true if the given character is a decimal digit.
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*
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* @param b The character to check.
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* @return True if the given character is a decimal digit.
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*/
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bool pm_char_is_decimal_digit(const uint8_t b);
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/**
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* Returns true if the given character is a hexadecimal digit.
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*
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* @param b The character to check.
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* @return True if the given character is a hexadecimal digit.
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*/
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bool pm_char_is_hexadecimal_digit(const uint8_t b);
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#endif
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