fusible 0.15.2

Electronic linter: a fuse that blows to block firmware code generation
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//! Lookups across the named sections of a loaded manifest.

use std::path::{Path, PathBuf};

use super::{FirmwareConfig, FusibleConfig};

impl FusibleConfig {
    /// Loads the manifest nearest to the working directory, ignoring lookup errors.
    ///
    /// `main` reports manifest errors before any command runs, so callers can treat
    /// an unreadable manifest like a missing one.
    pub fn nearest() -> Option<(PathBuf, Self)> {
        Self::find_and_load(Path::new(".")).ok().flatten()
    }

    /// Returns the firmware bound to `board`, or every firmware when `board` is `None`.
    ///
    /// A firmware without `board:` belongs to the only board of the project.
    pub fn firmware_for<'a>(
        &'a self,
        board: Option<&'a str>,
    ) -> impl Iterator<Item = (&'a String, &'a FirmwareConfig)> + 'a {
        self.firmware.iter().filter(move |(_, fw)| {
            board.is_none() || fw.board.is_none() || fw.board.as_deref() == board
        })
    }

    /// Display title for `board`: the project name for a single-board project, else the board name.
    pub fn board_title(&self, board: &str) -> String {
        match &self.name {
            Some(name) if self.boards.len() <= 1 => name.clone(),
            _ => board.to_string(),
        }
    }
}