pmat 3.30.1

PMAT - Zero-config AI context generation and code quality toolkit (CLI, MCP)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149

/// Generate JSON structured output (#216)
fn generate_json_context(
    toolchain: &str,
    project_path: &Path,
    context: &crate::services::deep_context::DeepContext,
) -> Result<String> {
    // Same rule as the markdown header: a header must count the document it
    // heads. `files` below is built by iterating `analyses.ast_contexts`, but
    // these totals were read from `complexity_report` — a separate pass with a
    // different file set and a wider notion of "function" — so a 19-entry
    // `files` array shipped under `total_files: 12`. #915 moved the markdown
    // header onto `count_emitted_body` for exactly this reason and left this
    // surface behind, which also made the two formats of one run disagree.
    let (total_files, total_functions) = count_emitted_body(context);

    let project = ContextJsonProject {
        language: toolchain.to_string(),
        path: project_path.display().to_string(),
        total_files,
        total_functions,
        overall_health: context
            .quality_scorecard
            .overall_health
            .map(|h| h.clamp(0.0, 100.0)),
        maintainability_index: context.quality_scorecard.maintainability_index,
    };

    let files: Vec<ContextJsonFile> = context
        .analyses
        .ast_contexts
        .iter()
        .map(|ec| build_json_file(&ec.base, &context.analyses))
        .collect();

    let output = ContextJsonOutput {
        version: "1.0",
        project,
        files,
    };

    serde_json::to_string_pretty(&output).map_err(|e| anyhow::anyhow!("JSON serialize: {e}"))
}

/// Build a single JSON file entry from AST context
fn build_json_file(
    file: &crate::services::context::FileContext,
    analyses: &crate::services::deep_context::AnalysisResults,
) -> ContextJsonFile {
    let file_metrics = find_file_metrics(file, analyses);

    let items: Vec<ContextJsonItem> = file
        .items
        .iter()
        .filter_map(|item| build_json_item(item, file_metrics))
        .collect();

    ContextJsonFile {
        path: file.path.clone(),
        items,
    }
}

/// Map an AstItem to a ContextJsonItem, enriching functions with complexity data
fn build_json_item(
    item: &crate::services::context::AstItem,
    file_metrics: Option<&crate::services::complexity::FileComplexityMetrics>,
) -> Option<ContextJsonItem> {
    use crate::services::context::AstItem;
    match item {
        AstItem::Function { name, line, .. } => {
            let (complexity, cognitive) = file_metrics
                .and_then(|fm| fm.functions.iter().find(|f| &f.name == name))
                .map(|fc| {
                    (
                        Some(fc.metrics.cyclomatic as u32),
                        Some(fc.metrics.cognitive as u32),
                    )
                })
                .unwrap_or((None, None));
            Some(ContextJsonItem {
                name: name.clone(),
                item_type: "function".to_string(),
                line: *line,
                complexity,
                cognitive_complexity: cognitive,
                fields_count: None,
                variants_count: None,
            })
        }
        AstItem::Struct {
            name,
            fields_count,
            line,
            ..
        } => Some(ContextJsonItem {
            name: name.clone(),
            item_type: "struct".to_string(),
            line: *line,
            complexity: None,
            cognitive_complexity: None,
            fields_count: Some(*fields_count),
            variants_count: None,
        }),
        AstItem::Enum {
            name,
            variants_count,
            line,
            ..
        } => Some(ContextJsonItem {
            name: name.clone(),
            item_type: "enum".to_string(),
            line: *line,
            complexity: None,
            cognitive_complexity: None,
            fields_count: None,
            variants_count: Some(*variants_count),
        }),
        AstItem::Trait { name, line, .. } => Some(ContextJsonItem {
            name: name.clone(),
            item_type: "trait".to_string(),
            line: *line,
            complexity: None,
            cognitive_complexity: None,
            fields_count: None,
            variants_count: None,
        }),
        AstItem::Impl {
            type_name,
            trait_name,
            line,
        } => {
            let name = if let Some(tr) = trait_name {
                format!("{tr} for {type_name}")
            } else {
                type_name.clone()
            };
            Some(ContextJsonItem {
                name,
                item_type: "impl".to_string(),
                line: *line,
                complexity: None,
                cognitive_complexity: None,
                fields_count: None,
                variants_count: None,
            })
        }
        _ => None,
    }
}