1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92
//! C-compatible result type. use super::error::{self, Error}; /// C-compatible result type from parsing strings-to-numbers for FFI. #[repr(C)] #[derive(Copy, Clone, Debug, PartialEq)] pub struct Result<T> { /// Value from the parser function call. pub value: T, /// Error information, including the error code and other metadata. pub error: Error, } /// Helper function to create a success message. #[inline] pub(crate) fn success<T>(value: T) -> Result<T> { Result { value: value, error: error::success() } } /// Helper function to create an overflow error. #[inline] pub(crate) fn overflow_error<T>(value: T) -> Result<T> { Result { value: value, error: error::overflow_error() } } /// Helper function to create an invalid digit error. #[inline] pub(crate) fn invalid_digit_error<T>(value: T, index: usize) -> Result<T> { Result { value: value, error: error::invalid_digit_error(index) } } #[inline] pub(crate) fn empty_error<T>(value: T) -> Result<T> { Result { value: value, error: error::empty_error() } } // FFI // Manually expand the templates for all known result types, since // no other language has Rust-compatible generics. /// Expanded generic for a result type containing a value of type u8. pub type U8Result = Result<u8>; /// Expanded generic for a result type containing a value of type u16. pub type U16Result = Result<u16>; /// Expanded generic for a result type containing a value of type u32. pub type U32Result = Result<u32>; /// Expanded generic for a result type containing a value of type u64. pub type U64Result = Result<u64>; /// Expanded generic for a result type containing a value of type u128. #[cfg(has_i128)] pub type U128Result = Result<u128>; /// Expanded generic for a result type containing a value of type usize. pub type UsizeResult = Result<usize>; /// Expanded generic for a result type containing a value of type i8. pub type I8Result = Result<i8>; /// Expanded generic for a result type containing a value of type i16. pub type I16Result = Result<i16>; /// Expanded generic for a result type containing a value of type i32. pub type I32Result = Result<i32>; /// Expanded generic for a result type containing a value of type i64. pub type I64Result = Result<i64>; /// Expanded generic for a result type containing a value of type i128. #[cfg(has_i128)] pub type I128Result = Result<i128>; /// Expanded generic for a result type containing a value of type isize. pub type IsizeResult = Result<isize>; /// Expanded generic for a result type containing a value of type f32. pub type F32Result = Result<f32>; /// Expanded generic for a result type containing a value of type f64. pub type F64Result = Result<f64>;