melior 0.27.1

The rustic MLIR bindings in Rust
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

use super::{Attribute, AttributeLike};
use crate::{
    Context, Error, StringRef,
    ir::{Type, TypeLike},
};
use mlir_sys::{MlirAttribute, mlirStringAttrGet, mlirStringAttrGetValue, mlirStringAttrTypedGet};

/// A string attribute.
#[derive(Clone, Copy, Hash)]
pub struct StringAttribute<'c> {
    attribute: Attribute<'c>,
}

impl<'c> StringAttribute<'c> {
    /// Creates a string attribute.
    pub fn new(context: &'c Context, string: &str) -> Self {
        unsafe {
            Self::from_raw(mlirStringAttrGet(
                context.to_raw(),
                StringRef::new(string).to_raw(),
            ))
        }
    }

    /// Creates a typed string attribute.
    pub fn typed(r#type: Type<'c>, string: &str) -> Self {
        unsafe {
            Self::from_raw(mlirStringAttrTypedGet(
                r#type.to_raw(),
                StringRef::new(string).to_raw(),
            ))
        }
    }

    /// Returns a value.
    pub fn value(&self) -> &'c str {
        unsafe { StringRef::from_raw(mlirStringAttrGetValue(self.to_raw())) }
            .as_str()
            .unwrap()
    }
}

attribute_traits!(StringAttribute, is_string, "string");

#[cfg(test)]
mod tests {
    use super::*;
    use crate::{ir::r#type::IntegerType, test::create_test_context};

    #[test]
    fn value() {
        let context = create_test_context();
        let value = StringAttribute::new(&context, "foo").value();

        assert_eq!(value, "foo");
    }

    #[test]
    fn typed() {
        let context = create_test_context();
        let r#type = Type::from(IntegerType::new(&context, 32));
        let attr = StringAttribute::typed(r#type, "hello");

        assert_eq!(attr.value(), "hello");
    }
}