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

//! Dialect handles, instances, and registry.

pub mod arith;
pub mod cf;
pub mod func;
mod handle;
pub mod index;
pub mod llvm;
pub mod memref;
mod registry;
pub mod scf;

pub use self::{handle::DialectHandle, registry::DialectRegistry};
use crate::{
    context::{Context, ContextRef},
    string_ref::StringRef,
};
use mlir_sys::{mlirDialectEqual, mlirDialectGetContext, mlirDialectGetNamespace, MlirDialect};
use std::{marker::PhantomData, str::Utf8Error};

#[cfg(feature = "ods-dialects")]
pub mod ods;

/// A dialect.
#[derive(Clone, Copy, Debug)]
pub struct Dialect<'c> {
    raw: MlirDialect,
    _context: PhantomData<&'c Context>,
}

impl<'c> Dialect<'c> {
    /// Gets a context.
    pub fn context(&self) -> ContextRef<'c> {
        unsafe { ContextRef::from_raw(mlirDialectGetContext(self.raw)) }
    }

    /// Gets a namespace.
    pub fn namespace(&self) -> Result<&str, Utf8Error> {
        unsafe { StringRef::from_raw(mlirDialectGetNamespace(self.raw)) }.as_str()
    }

    /// Creates a dialect from a raw object.
    ///
    /// # Safety
    ///
    /// A raw object must be valid.
    pub unsafe fn from_raw(dialect: MlirDialect) -> Self {
        Self {
            raw: dialect,
            _context: Default::default(),
        }
    }
}

impl<'c> PartialEq for Dialect<'c> {
    fn eq(&self, other: &Self) -> bool {
        unsafe { mlirDialectEqual(self.raw, other.raw) }
    }
}

impl<'c> Eq for Dialect<'c> {}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn namespace() {
        let context = Context::new();

        assert_eq!(
            DialectHandle::llvm()
                .load_dialect(&context)
                .namespace()
                .unwrap(),
            "llvm"
        );
    }

    #[test]
    fn equal() {
        let context = Context::new();

        assert_eq!(
            DialectHandle::func().load_dialect(&context),
            DialectHandle::func().load_dialect(&context)
        );
    }

    #[test]
    fn not_equal() {
        let context = Context::new();

        assert_ne!(
            DialectHandle::func().load_dialect(&context),
            DialectHandle::llvm().load_dialect(&context)
        );
    }
}