deflect/value/
array.rs

1use std::fmt;
2
3/// A reflected [`[T; N]`][prim@array] value.
4#[derive(Clone)]
5#[allow(non_camel_case_types)]
6pub struct Array<'value, 'dwarf, P = crate::DefaultProvider>
7where
8    P: crate::DebugInfoProvider,
9{
10    value: crate::Bytes<'value>,
11    schema: crate::schema::Array<'dwarf, P::Reader>,
12    provider: &'dwarf P,
13}
14
15impl<'dwarf, R> crate::schema::Array<'dwarf, R>
16where
17    R: crate::gimli::Reader<Offset = std::primitive::usize>,
18{
19    pub(crate) unsafe fn with_bytes<'value, P>(
20        self,
21        provider: &'dwarf P,
22        value: crate::Bytes<'value>,
23    ) -> Result<Array<'value, 'dwarf, P>, crate::Error>
24    where
25        P: crate::DebugInfoProvider<Reader = R>,
26    {
27        let len = self.len()?;
28        let elt_size = self.elt_type()?.size()?;
29        let bytes = len
30            .checked_mul(elt_size)
31            .ok_or_else(crate::error::arithmetic_overflow)?;
32        let bytes = usize::try_from(bytes)?;
33        let value = &value[..bytes];
34        Ok(Array {
35            value,
36            schema: self,
37            provider,
38        })
39    }
40}
41
42impl<'value, 'dwarf, P> Array<'value, 'dwarf, P>
43where
44    P: crate::DebugInfoProvider,
45{
46    /// The schema of this value.
47    pub fn schema(&self) -> &crate::schema::Array<'dwarf, P::Reader> {
48        &self.schema
49    }
50
51    /// An iterator over values in the array.
52    pub fn iter(&self) -> Result<super::Iter<'value, 'dwarf, P>, crate::Error> {
53        let elt_type = self.schema.elt_type()?;
54        let elt_size = elt_type.size()?;
55        let elt_size = usize::try_from(elt_size)?;
56        let length = self.schema.len()?;
57        let length: usize = length.try_into()?;
58        Ok(unsafe { super::Iter::new(self.value, elt_size, elt_type, length, self.provider) })
59    }
60}
61
62impl<'value, 'dwarf, P> fmt::Debug for Array<'value, 'dwarf, P>
63where
64    P: crate::DebugInfoProvider,
65{
66    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
67        let mut debug_struct = f.debug_struct("deflect::value::Array");
68        debug_struct.field("schema", &self.schema);
69        debug_struct.field("value", &self.value);
70        debug_struct.finish()
71    }
72}
73
74impl<'value, 'dwarf, P> fmt::Display for Array<'value, 'dwarf, P>
75where
76    P: crate::DebugInfoProvider,
77{
78    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
79        let mut debug_list = f.debug_list();
80        for maybe_elt in self.iter().map_err(crate::fmt_err)? {
81            let elt = maybe_elt.map_err(crate::fmt_err)?;
82            debug_list.entry(&crate::DebugDisplay(elt));
83        }
84        debug_list.finish()
85    }
86}
deflect/value/array.rs

deflect/value/
array.rs
