ailint_core/rules/semantic/
duplicate_rules.rs

1//! AIL103 `no-duplicate-rules` — list items that normalize to identical text.
2//!
3//! See: `docs/rules/semantic/AIL103.md`
4
5use std::collections::HashMap;
6
7use serde::Deserialize;
8
9use crate::parser::{DocumentContent, ParsedDocument};
10use crate::rules::semantic::AIL103;
11use crate::rules::{Rule, RuleContext, RuleId, Severity, Violation};
12
13#[derive(Debug, Default, Deserialize)]
14#[serde(default, deny_unknown_fields)]
15struct Options {
16    normalize: Option<bool>,
17}
18
19/// AIL103 no-duplicate-rules: flags a rule stated more than once in a document.
20#[derive(Debug, Default)]
21pub struct NoDuplicateRulesRule;
22
23impl Rule for NoDuplicateRulesRule {
24    fn id(&self) -> RuleId {
25        AIL103
26    }
27
28    fn default_severity(&self) -> Severity {
29        Severity::Info
30    }
31
32    fn description(&self) -> &'static str {
33        "Same rule text appears more than once in the file."
34    }
35
36    fn fix_hint(&self) -> &'static str {
37        "Delete or merge the duplicate."
38    }
39
40    fn run(&self, doc: &ParsedDocument, ctx: &RuleContext<'_>) -> Vec<Violation> {
41        let md = match &doc.content {
42            DocumentContent::Markdown(m) => m,
43            _ => return Vec::new(),
44        };
45        let opts: Options = ctx
46            .options
47            .and_then(|v| serde_yaml::from_value(v.clone()).ok())
48            .unwrap_or_default();
49        let _normalize = opts.normalize.unwrap_or(true);
50
51        let mut first_seen: HashMap<String, usize> = HashMap::new();
52        let mut out = Vec::new();
53        for item in &md.list_items {
54            let norm = normalize(&item.text);
55            if norm.chars().count() < 5 {
56                continue;
57            }
58            match first_seen.get(&norm) {
59                Some(&first_line) => {
60                    let snippet: String = item.text.chars().take(120).collect();
61                    let mut v = Violation::new(
62                        AIL103,
63                        self.default_severity(),
64                        doc.path.clone(),
65                        "duplicate rule",
66                    )
67                    .at(item.line, 1)
68                    .with_detail(format!("first seen at L{first_line}"));
69                    v.snippet = Some(snippet);
70                    out.push(v);
71                }
72                None => {
73                    first_seen.insert(norm, item.line);
74                }
75            }
76        }
77        out
78    }
79}
80
81fn normalize(s: &str) -> String {
82    let lower = s.to_lowercase();
83    let mut buf = String::with_capacity(lower.len());
84    let mut prev_space = true;
85    for ch in lower.chars() {
86        if ch.is_alphanumeric() {
87            buf.push(ch);
88            prev_space = false;
89        } else if (ch.is_whitespace() || ch.is_ascii_punctuation()) && !prev_space {
90            buf.push(' ');
91            prev_space = true;
92        }
93    }
94    buf.trim().to_string()
95}
ailint_core/rules/semantic/duplicate_rules.rs

ailint_core/rules/semantic/
duplicate_rules.rs
