nom_kconfig/attribute/
prompt.rs

1use super::expression::{parse_if_attribute, Expression};
2use crate::{util::ws, KconfigInput};
3use nom::{
4    branch::alt,
5    bytes::complete::{tag, take_until},
6    character::complete::char,
7    character::complete::{alphanumeric1, line_ending, multispace1, not_line_ending, one_of},
8    combinator::{eof, map, recognize, verify},
9    multi::many1,
10    sequence::{delimited, terminated, tuple},
11    IResult,
12};
13#[cfg(feature = "deserialize")]
14use serde::Deserialize;
15#[cfg(feature = "serialize")]
16use serde::Serialize;
17
18/// Every menu entry can have at most one prompt, which is used to display to the user.
19/// Optionally dependencies only for this prompt can be added with "if".
20#[derive(Debug, Clone, PartialEq)]
21#[cfg_attr(feature = "hash", derive(Hash))]
22#[cfg_attr(feature = "serialize", derive(Serialize))]
23#[cfg_attr(feature = "deserialize", derive(Deserialize))]
24pub struct Prompt {
25    pub prompt: String,
26    #[cfg_attr(
27        any(feature = "serialize", feature = "deserialize"),
28        serde(skip_serializing_if = "Option::is_none")
29    )]
30    pub r#if: Option<Expression>,
31}
32
33#[cfg(feature = "display")]
34use std::fmt::Display;
35#[cfg(feature = "display")]
36impl Display for Prompt {
37    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
38        match &self.r#if {
39            Some(i) => write!(f, r#""{}" if {}"#, self.prompt, i),
40            None => write!(f, r#""{}""#, self.prompt),
41        }
42    }
43}
44
45pub fn parse_prompt(input: KconfigInput) -> IResult<KconfigInput, Prompt> {
46    map(
47        tuple((ws(tag("prompt")), parse_prompt_value, parse_if_attribute)),
48        |(_, p, i)| Prompt {
49            prompt: p.to_string(),
50            r#if: i,
51        },
52    )(input)
53}
54
55/// Parses a `prompt` attribute.
56/// # Example
57/// ```
58/// use nom_kconfig::{assert_parsing_eq, attribute::parse_prompt_value};
59///
60/// assert_parsing_eq!(parse_prompt_value, "scripts/Kconfig.include", Ok(("", "scripts/Kconfig.include".to_string())))
61/// ```
62pub fn parse_prompt_value(input: KconfigInput) -> IResult<KconfigInput, String> {
63    map(
64        alt((
65            delimited(
66                ws(char('"')),
67                recognize(ws(many1(alt((
68                    alphanumeric1,
69                    multispace1,
70                    tag("\\\""),
71                    // TODO
72                    //recognize(anychar),
73                    recognize(one_of("&#*|!É{}^<>%[]()+'=,:;μ-?._$/")),
74                ))))),
75                char('"'),
76            ),
77            delimited(ws(char('\'')), take_until("'"), char('\'')),
78            // TODO linux v-3.2, in file /arch/arm/plat-tcc/Kconfig
79            verify(
80                terminated(not_line_ending, alt((line_ending, eof))),
81                |d: &KconfigInput| !d.trim().is_empty(),
82            ),
83        )),
84        |d: KconfigInput| d.fragment().to_owned().trim().to_string(),
85    )(input)
86}
nom_kconfig/attribute/prompt.rs

nom_kconfig/attribute/
prompt.rs
