hypershell-components 0.1.0

Modular DSL for shellscripting in Rust
Documentation 
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

use alloc::borrow::Cow;
use alloc::format;
use alloc::string::{String, ToString};
use core::fmt::Display;
use core::marker::PhantomData;

use cgp::prelude::*;

use crate::components::{
    CanExtractStringArg, CommandArgExtractor, CommandArgExtractorComponent, HasCommandArgType,
    StringArgExtractor, StringArgExtractorComponent,
};
use crate::dsl::{FieldArg, JoinArgs, StaticArg};

#[cgp_new_provider]
impl<Context, Arg> CommandArgExtractor<Context, Arg> for ExtractStringCommandArg
where
    Context: HasCommandArgType + CanExtractStringArg<Arg>,
    Context::CommandArg: From<String>,
{
    fn extract_command_arg(context: &Context, phantom: PhantomData<Arg>) -> Context::CommandArg {
        context.extract_string_arg(phantom).into_owned().into()
    }
}

#[cgp_new_provider]
impl<Context, Arg> StringArgExtractor<Context, StaticArg<Arg>> for ExtractStaticArg
where
    Arg: Default + Display,
{
    fn extract_string_arg(
        _context: &Context,
        _phantom: PhantomData<StaticArg<Arg>>,
    ) -> Cow<'_, str> {
        Arg::default().to_string().into()
    }
}

#[cgp_new_provider]
impl<Context, Tag> StringArgExtractor<Context, FieldArg<Tag>> for ExtractFieldArg
where
    Context: HasField<Tag, Value: Display>,
{
    fn extract_string_arg(context: &Context, _phantom: PhantomData<FieldArg<Tag>>) -> Cow<'_, str> {
        context.get_field(PhantomData).to_string().into()
    }
}

pub struct JoinStringArgs;

#[cgp_provider]
impl<Context, Arg, Args> StringArgExtractor<Context, JoinArgs<Cons<Arg, Args>>> for JoinStringArgs
where
    Context: CanExtractStringArg<Arg>,
    Self: StringArgExtractor<Context, JoinArgs<Args>>,
{
    fn extract_string_arg(
        context: &Context,
        _phantom: PhantomData<JoinArgs<Cons<Arg, Args>>>,
    ) -> Cow<'_, str> {
        let arg = context.extract_string_arg(PhantomData);
        let args = Self::extract_string_arg(context, PhantomData::<JoinArgs<Args>>);

        format!("{arg}{args}").into()
    }
}

#[cgp_provider]
impl<Context> StringArgExtractor<Context, JoinArgs<Nil>> for JoinStringArgs {
    fn extract_string_arg(
        _context: &Context,
        _phantom: PhantomData<JoinArgs<Nil>>,
    ) -> Cow<'_, str> {
        "".into()
    }
}