Enum wast::lexer::LexError [−][src]
pub enum LexError {
DanglingBlockComment,
Unexpected(char),
InvalidStringElement(char),
InvalidStringEscape(char),
InvalidHexDigit(char),
InvalidDigit(char),
Expected {
wanted: char,
found: char,
},
UnexpectedEof,
NumberTooBig,
InvalidUnicodeValue(u32),
LoneUnderscore,
// some variants omitted
}
Expand description
Errors that can be generated while lexing.
All lexing errors have line/colum/position information as well as a
LexError
indicating what kind of error happened while lexing.
Variants
A dangling block comment was found with an unbalanced (;
which was
never terminated in the file.
Unexpected(char)
An unexpected character was encountered when generally parsing and looking for something else.
Tuple Fields of Unexpected
0: char
InvalidStringElement(char)
An invalid char
in a string literal was found.
Tuple Fields of InvalidStringElement
0: char
InvalidStringEscape(char)
An invalid string escape letter was found (the thing after the \
in
string literals)
Tuple Fields of InvalidStringEscape
0: char
InvalidHexDigit(char)
An invalid hexadecimal digit was found.
Tuple Fields of InvalidHexDigit
0: char
InvalidDigit(char)
An invalid base-10 digit was found.
Tuple Fields of InvalidDigit
0: char
Parsing expected wanted
but ended up finding found
instead where the
two characters aren’t the same.
Fields of Expected
We needed to parse more but EOF (or end of the string) was encountered.
A number failed to parse because it was too big to fit within the target type.
InvalidUnicodeValue(u32)
An invalid unicode value was found in a \u{...}
escape in a string,
only valid unicode scalars can be escaped that way.
Tuple Fields of InvalidUnicodeValue
0: u32
A lone underscore was found when parsing a number, since underscores should always be preceded and succeeded with a digit of some form.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for LexError
impl UnwindSafe for LexError
Blanket Implementations
Mutably borrows from an owned value. Read more