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 description(&self) -> &str {
20        "Class with only data, no behavior"
21    }
22
23    fn analyze(&self, ctx: &AnalysisContext) -> Vec<Finding> {
24        ctx.model
25            .classes
26            .iter()
27            .filter_map(|c| {
28                if c.is_interface || c.field_count < self.min_fields || c.has_behavior {
29                    return None;
30                }
31                Some(Finding {
32                    smell_name: "data_class".into(),
33                    category: SmellCategory::Dispensables,
34                    severity: Severity::Hint,
35                    location: Location {
36                        path: ctx.file.path.clone(),
37                        start_line: c.start_line,
38                        end_line: c.end_line,
39                        name: Some(c.name.clone()),
40                    },
41                    message: format!(
42                        "Class `{}` has {} fields but no behavior methods, consider Move Method",
43                        c.name, c.field_count
44                    ),
45                    suggested_refactorings: vec!["Move Method".into(), "Encapsulate Field".into()],
46                    ..Default::default()
47                })
48            })
49            .collect()
50    }
51}
cha_core/plugins/data_class.rs

cha_core/plugins/
data_class.rs
