jsony/text/
from_impl.rs

1use std::borrow::Cow;
2
3use crate::json::DecodeError;
4
5use super::{Ctx, FromText};
6
7impl<'a> FromText<'a> for &'a str {
8    fn from_text(ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
9        if let Some(text) = ctx.try_extend_lifetime(text) {
10            Ok(text)
11        } else {
12            Err(&DecodeError {
13                message: "Text does not extend lifetime",
14            })
15        }
16    }
17}
18
19static INVALID_NUMBER: DecodeError = DecodeError {
20    message: "Invalid Number",
21};
22
23macro_rules! impl_from_text_from_str {
24    ($($ty:ty),*) => {
25        $(
26        impl<'a> FromText<'a> for $ty {
27            fn from_text(_ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
28                match text.parse::<$ty>() {
29                    Ok(v) => Ok(v),
30                    Err(_) => Err(&INVALID_NUMBER),
31                }
32            }
33        })*
34    };
35}
36
37impl_from_text_from_str! {
38    u8,u16,u32,u64,u128,usize,
39    i8,i16,i32,i64,i128,isize,
40    f32,f64
41}
42
43impl<'a> FromText<'a> for char {
44    fn from_text(_ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
45        match text.parse::<char>() {
46            Ok(v) => Ok(v),
47            Err(_) => Err(&DecodeError {
48                message: "Invalid char",
49            }),
50        }
51    }
52}
53
54impl<'a> FromText<'a> for Cow<'a, str> {
55    fn from_text(ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
56        if let Some(text) = ctx.try_extend_lifetime(text) {
57            Ok(Cow::Borrowed(text))
58        } else {
59            Ok(Cow::Owned(text.into()))
60        }
61    }
62}
63
64impl<'a> FromText<'a> for bool {
65    fn from_text(_ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
66        if text.eq_ignore_ascii_case("true") || text == "1" {
67            Ok(true)
68        } else if text.eq_ignore_ascii_case("false") || text == "0" {
69            return Ok(false);
70        } else {
71            return Err(&DecodeError {
72                message: "Invalid Boolean",
73            });
74        }
75    }
76}
77
78impl<'a> FromText<'a> for Box<str> {
79    fn from_text(_ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
80        Ok(text.into())
81    }
82}
83
84impl<'a> FromText<'a> for String {
85    fn from_text(_ctx: &mut Ctx<'a>, text: &str) -> Result<Self, &'static DecodeError> {
86        Ok(text.into())
87    }
88}
jsony/text/from_impl.rs

jsony/text/
from_impl.rs
