python_ast/ast/tree/
dict.rs

1use proc_macro2::TokenStream;
2use pyo3::{Bound, FromPyObject, PyAny, PyResult};
3use quote::quote;
4use serde::{Deserialize, Serialize};
5
6use crate::{
7    CodeGen, CodeGenContext, ExprType, PythonOptions, SymbolTableScopes,
8    Node, impl_node_with_positions, extract_list
9};
10
11#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
12pub struct Dict {
13    pub keys: Vec<Option<ExprType>>,
14    pub values: Vec<ExprType>,
15    pub lineno: Option<usize>,
16    pub col_offset: Option<usize>,
17    pub end_lineno: Option<usize>,
18    pub end_col_offset: Option<usize>,
19}
20
21impl<'a> FromPyObject<'a> for Dict {
22    fn extract_bound(ob: &Bound<'a, PyAny>) -> PyResult<Self> {
23        let keys: Vec<Option<ExprType>> = extract_list(ob, "keys", "dictionary keys")?;
24        let values: Vec<ExprType> = extract_list(ob, "values", "dictionary values")?;
25        
26        Ok(Dict {
27            keys,
28            values,
29            lineno: ob.lineno(),
30            col_offset: ob.col_offset(),
31            end_lineno: ob.end_lineno(),
32            end_col_offset: ob.end_col_offset(),
33        })
34    }
35}
36
37impl_node_with_positions!(Dict { lineno, col_offset, end_lineno, end_col_offset });
38
39impl CodeGen for Dict {
40    type Context = CodeGenContext;
41    type Options = PythonOptions;
42    type SymbolTable = SymbolTableScopes;
43
44    fn to_rust(
45        self,
46        ctx: Self::Context,
47        options: Self::Options,
48        symbols: Self::SymbolTable,
49    ) -> Result<TokenStream, Box<dyn std::error::Error>> {
50        let mut pairs = Vec::new();
51        
52        for (key, value) in self.keys.iter().zip(self.values.iter()) {
53            match key {
54                Some(k) => {
55                    let key_tokens = k.clone().to_rust(ctx.clone(), options.clone(), symbols.clone())?;
56                    let value_tokens = value.clone().to_rust(ctx.clone(), options.clone(), symbols.clone())?;
57                    pairs.push(quote! { (#key_tokens, #value_tokens) });
58                }
59                None => {
60                    // Handle dictionary unpacking (**dict)
61                    let value_tokens = value.clone().to_rust(ctx.clone(), options.clone(), symbols.clone())?;
62                    pairs.push(quote! { ..#value_tokens });
63                }
64            }
65        }
66        
67        Ok(quote! {
68            std::collections::HashMap::from([#(#pairs),*])
69        })
70    }
71}
72
73#[cfg(test)]
74mod tests {
75    use super::*;
76    use crate::create_parse_test;
77
78    create_parse_test!(test_empty_dict, "{}", "dict_test.py");
79    create_parse_test!(test_simple_dict, "{'a': 1, 'b': 2}", "dict_test.py");
80    create_parse_test!(test_dict_with_variables, "{x: y, z: w}", "dict_test.py");
81}
python_ast/ast/tree/dict.rs

python_ast/ast/tree/
dict.rs
