pmat 3.14.0

PMAT - Zero-config AI context generation and code quality toolkit (CLI, MCP, HTTP)
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

#![cfg_attr(coverage_nightly, coverage(off))]
//! Rust AST visitor for extracting code items.
//!
//! This module provides the visitor pattern implementation for extracting
//! functions, structs, enums, traits, and other items from Rust source code.

use super::types::AstItem;
use syn::visit::Visit;
use syn::{ItemEnum, ItemFn, ItemImpl, ItemMod, ItemStruct, ItemTrait, ItemUse};

pub(crate) struct RustVisitor {
    pub items: Vec<AstItem>,
    
    source: String,
}

impl RustVisitor {
    #[provable_contracts_macros::contract("pmat-core.yaml", equation = "check_compliance")]
    /// Create a new instance.
    pub fn new(source: String) -> Self {
        Self {
            items: Vec::new(),
            source,
        }
    }

    fn get_line<T: syn::spanned::Spanned>(&self, _span: T) -> usize {
        // For simplicity, return 1. In production, use a proper source map
        1
    }

    fn get_visibility(&self, vis: &syn::Visibility) -> String {
        match vis {
            syn::Visibility::Public(_) => "pub".to_string(),
            syn::Visibility::Restricted(r) => format!(
                "pub({})",
                r.path
                    .segments
                    .iter()
                    .map(|s| s.ident.to_string())
                    .collect::<Vec<_>>()
                    .join("::")
            ),
            syn::Visibility::Inherited => "private".to_string(),
        }
    }

    fn get_derives(_attrs: &[syn::Attribute]) -> Vec<String> {
        // Simplified version - in production, parse derive attributes properly
        Vec::new()
    }
}

impl<'ast> Visit<'ast> for RustVisitor {
    fn visit_item_fn(&mut self, node: &'ast ItemFn) {
        self.items.push(AstItem::Function {
            name: node.sig.ident.to_string(),
            visibility: self.get_visibility(&node.vis),
            is_async: node.sig.asyncness.is_some(),
            line: self.get_line(node.sig.ident.span()),
        });
    }

    fn visit_item_struct(&mut self, node: &'ast ItemStruct) {
        let fields_count = match &node.fields {
            syn::Fields::Named(fields) => fields.named.len(),
            syn::Fields::Unnamed(fields) => fields.unnamed.len(),
            syn::Fields::Unit => 0,
        };

        self.items.push(AstItem::Struct {
            name: node.ident.to_string(),
            visibility: self.get_visibility(&node.vis),
            fields_count,
            derives: Self::get_derives(&node.attrs),
            line: self.get_line(node.ident.span()),
        });
    }

    fn visit_item_enum(&mut self, node: &'ast ItemEnum) {
        self.items.push(AstItem::Enum {
            name: node.ident.to_string(),
            visibility: self.get_visibility(&node.vis),
            variants_count: node.variants.len(),
            line: self.get_line(node.ident.span()),
        });
    }

    fn visit_item_trait(&mut self, node: &'ast ItemTrait) {
        self.items.push(AstItem::Trait {
            name: node.ident.to_string(),
            visibility: self.get_visibility(&node.vis),
            line: self.get_line(node.ident.span()),
        });
    }

    fn visit_item_impl(&mut self, node: &'ast ItemImpl) {
        let type_name = if let syn::Type::Path(type_path) = &*node.self_ty {
            type_path
                .path
                .segments
                .last()
                .map_or_else(|| "Unknown".to_string(), |s| s.ident.to_string())
        } else {
            "Unknown".to_string()
        };

        let trait_name = node.trait_.as_ref().map(|(_, path, _)| {
            path.segments
                .last()
                .map_or_else(|| "Unknown".to_string(), |s| s.ident.to_string())
        });

        self.items.push(AstItem::Impl {
            type_name,
            trait_name,
            line: 1, // Default line number
        });
    }

    fn visit_item_mod(&mut self, node: &'ast ItemMod) {
        self.items.push(AstItem::Module {
            name: node.ident.to_string(),
            visibility: self.get_visibility(&node.vis),
            line: self.get_line(node.ident.span()),
        });
    }

    fn visit_item_use(&mut self, node: &'ast ItemUse) {
        let path = match &node.tree {
            syn::UseTree::Path(p) => p.ident.to_string(),
            syn::UseTree::Name(n) => n.ident.to_string(),
            syn::UseTree::Rename(r) => r.ident.to_string(),
            syn::UseTree::Glob(_) => "*".to_string(),
            syn::UseTree::Group(_) => "...".to_string(),
        };

        self.items.push(AstItem::Use {
            path,
            line: 1, // Default line number
        });
    }
}