cha_core/plugins/
data_class.rs

1use crate::{AnalysisContext, Finding, Location, Plugin, Severity, SmellCategory};
2
3/// Detect classes that only have fields and accessor methods (no real behavior).
4pub struct DataClassAnalyzer {
5    pub min_fields: usize,
6}
7
8impl Default for DataClassAnalyzer {
9    fn default() -> Self {
10        Self { min_fields: 2 }
11    }
12}
13
14impl Plugin for DataClassAnalyzer {
15    fn name(&self) -> &str {
16        "data_class"
17    }
18
19    fn smells(&self) -> Vec<String> {
20        vec!["data_class".into()]
21    }
22
23    fn description(&self) -> &str {
24        "Class with only data, no behavior"
25    }
26
27    fn analyze(&self, ctx: &AnalysisContext) -> Vec<Finding> {
28        ctx.model
29            .classes
30            .iter()
31            .filter_map(|c| {
32                if c.is_interface || c.field_count < self.min_fields || c.has_behavior {
33                    return None;
34                }
35                Some(Finding {
36                    smell_name: "data_class".into(),
37                    category: SmellCategory::Dispensables,
38                    severity: Severity::Hint,
39                    location: Location {
40                        path: ctx.file.path.clone(),
41                        start_line: c.start_line,
42                        end_line: c.end_line,
43                        name: Some(c.name.clone()),
44                        ..Default::default()
45                    },
46                    message: format!(
47                        "Class `{}` has {} fields but no behavior methods, consider Move Method",
48                        c.name, c.field_count
49                    ),
50                    suggested_refactorings: vec!["Move Method".into(), "Encapsulate Field".into()],
51                    ..Default::default()
52                })
53            })
54            .collect()
55    }
56}
cha_core/plugins/data_class.rs

cha_core/plugins/
data_class.rs
