dimpact 0.1.0

impact analysis from diff
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

use crate::ir::{Symbol, SymbolId};
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "snake_case")]
pub enum RefKind {
    Call,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub struct UnresolvedRef {
    pub name: String,
    pub kind: RefKind,
    pub file: String,
    pub line: u32,
    pub qualifier: Option<String>, // e.g., "a::b" for a::b::name()
    pub is_method: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub struct Reference {
    pub from: SymbolId,
    pub to: SymbolId,
    pub kind: RefKind,
    pub file: String,
    pub line: u32,
}

#[derive(Debug, Default, Clone)]
pub struct SymbolIndex {
    pub symbols: Vec<Symbol>,
    pub by_name: std::collections::HashMap<String, Vec<Symbol>>, // name -> symbols
    pub by_file: std::collections::HashMap<String, Vec<Symbol>>, // file -> symbols
}

impl SymbolIndex {
    pub fn build(symbols: Vec<Symbol>) -> Self {
        let mut by_name = std::collections::HashMap::new();
        let mut by_file = std::collections::HashMap::new();
        for s in symbols.iter() {
            by_name
                .entry(s.name.clone())
                .or_insert_with(Vec::new)
                .push(s.clone());
            by_file
                .entry(s.file.clone())
                .or_insert_with(Vec::new)
                .push(s.clone());
        }
        Self {
            symbols,
            by_name,
            by_file,
        }
    }

    pub fn enclosing_symbol(&self, file: &str, line: u32) -> Option<&Symbol> {
        self.by_file
            .get(file)?
            .iter()
            .find(|s| s.range.start_line <= line && line <= s.range.end_line)
    }
}