Module `validations`

Operations related to UTF-8 validation.

Functions

contains_nonascii Returns true if any byte in the word x is nonascii (>= 128).
next_code_point Reads the next code point out of a byte iterator (assuming a UTF-8-like encoding).
next_code_point_reverse Reads the last code point out of a byte iterator (assuming a UTF-8-like encoding).
run_utf8_validation Walks through v checking that it's a valid UTF-8 sequence, returning Ok(()) in that case, or, if it is invalid, Err(err).
utf8_acc_cont_byte Returns the value of ch updated with continuation byte byte.
utf8_char_width Given a first byte, determines how many bytes are in this UTF-8 character.
utf8_first_byte Returns the initial codepoint accumulator for the first byte. The first byte is special, only want bottom 5 bits for width 2, 4 bits for width 3, and 3 bits for width 4.
utf8_is_cont_byte Checks whether the byte is a UTF-8 continuation byte (i.e., starts with the bits 10).