python_ast/ast/tree/
attribute.rs

1use proc_macro2::TokenStream;
2use pyo3::FromPyObject;
3use quote::{format_ident, quote};
4
5use crate::{dump, CodeGen, CodeGenContext, ExprType, Node, PythonOptions, SymbolTableScopes};
6
7use serde::{Deserialize, Serialize};
8
9#[derive(Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
10//#[pyo3(transparent)]
11pub struct Attribute {
12    value: Box<ExprType>,
13    attr: String,
14    ctx: String,
15}
16
17impl<'a> FromPyObject<'a> for Attribute {
18    fn extract(ob: &pyo3::PyAny) -> pyo3::PyResult<Self> {
19        let value = ob.getattr("value").expect("Attribute.value");
20        let attr = ob.getattr("attr").expect("Attribute.attr");
21        let ctx = ob
22            .getattr("ctx")
23            .expect("getting attribute context")
24            .get_type()
25            .name()
26            .expect(
27                ob.error_message(
28                    "<unknown>",
29                    format!("extracting type name {:?} in attribute", dump(ob, None)),
30                )
31                .as_str(),
32            );
33        Ok(Attribute {
34            value: Box::new(ExprType::extract(&value).expect("Attribute.value")),
35            attr: attr.extract().expect("Attribute.attr"),
36            ctx: ctx.to_string(),
37        })
38    }
39}
40
41impl<'a> CodeGen for Attribute {
42    type Context = CodeGenContext;
43    type Options = PythonOptions;
44    type SymbolTable = SymbolTableScopes;
45
46    fn to_rust(
47        self,
48        _ctx: Self::Context,
49        _options: Self::Options,
50        _symbols: Self::SymbolTable,
51    ) -> Result<TokenStream, Box<dyn std::error::Error>> {
52        let name = self
53            .value
54            .to_rust(_ctx, _options, _symbols)
55            .expect("Attribute.value");
56        let attr = format_ident!("{}", self.attr);
57        Ok(quote!(#name.#attr))
58    }
59}
python_ast/ast/tree/attribute.rs

python_ast/ast/tree/
attribute.rs
