specfold-core 0.1.0

Library behind specfold: typed Markdown documents, owners, a derived graph and checks.
Documentation 
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//! What a check reports: one problem, where it is, and how to fix it.

use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum Severity {
    Error,
    Warn,
}

/// A fix an agent can apply without judgement: a command to run, or an exact replacement.
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "lowercase")]
pub enum Fix {
    Cmd(String),
    Replace { path: String, line: usize, from: String, to: String },
}

#[derive(Debug, Clone, Serialize)]
pub struct Finding {
    pub rule: String,
    pub severity: Severity,
    pub path: String,
    pub line: usize,
    pub message: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub fix: Option<Fix>,
    #[serde(skip_serializing_if = "Vec::is_empty")]
    pub candidates: Vec<String>,
}

impl Finding {
    pub fn new(
        rule: impl Into<String>,
        severity: Severity,
        path: impl Into<String>,
        line: usize,
        message: impl Into<String>,
    ) -> Self {
        Finding {
            rule: rule.into(),
            severity,
            path: path.into(),
            line,
            message: message.into(),
            fix: None,
            candidates: vec![],
        }
    }

    pub fn error(rule: impl Into<String>, path: impl Into<String>, line: usize, message: impl Into<String>) -> Self {
        Self::new(rule, Severity::Error, path, line, message)
    }

    pub fn warn(rule: impl Into<String>, path: impl Into<String>, line: usize, message: impl Into<String>) -> Self {
        Self::new(rule, Severity::Warn, path, line, message)
    }

    pub fn fix_cmd(mut self, cmd: impl Into<String>) -> Self {
        self.fix = Some(Fix::Cmd(cmd.into()));
        self
    }

    pub fn fix_replace(mut self, from: impl Into<String>, to: impl Into<String>) -> Self {
        self.fix = Some(Fix::Replace { path: self.path.clone(), line: self.line, from: from.into(), to: to.into() });
        self
    }

    pub fn with_candidates(mut self, c: Vec<String>) -> Self {
        self.candidates = c;
        self
    }
}