fuchsia_inspect/writer/types/
bytes_property.rs

1// Copyright 2021 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::writer::{Inner, InnerPropertyType, InspectType, Property};
6use log::error;
7
8/// Inspect Bytes Property data type.
9///
10/// NOTE: do not rely on PartialEq implementation for true comparison.
11/// Instead leverage the reader.
12///
13/// NOTE: Operations on a Default value are no-ops.
14#[derive(Debug, PartialEq, Eq, Default)]
15pub struct BytesProperty {
16    inner: Inner<InnerPropertyType>,
17}
18
19impl<'t> Property<'t> for BytesProperty {
20    type Type = &'t [u8];
21
22    fn set(&self, value: &'t [u8]) {
23        if let Some(ref inner_ref) = self.inner.inner_ref() {
24            inner_ref
25                .state
26                .try_lock()
27                .and_then(|mut state| state.set_buffer_property(inner_ref.block_index, value))
28                .unwrap_or_else(|e| error!("Failed to set property. Error: {:?}", e));
29        }
30    }
31}
32
33impl InspectType for BytesProperty {
34    fn into_recorded(self) -> crate::writer::types::RecordedInspectType {
35        crate::writer::types::RecordedInspectType::BytesProperty(self)
36    }
37}
38
39crate::impl_inspect_type_internal!(BytesProperty);
40
41#[cfg(test)]
42mod tests {
43    use super::*;
44    use crate::writer::Node;
45    use crate::writer::testing_utils::{GetBlockExt, get_state};
46    use inspect_format::{BlockType, Buffer, PropertyFormat};
47
48    #[fuchsia::test]
49    fn bytes_property() {
50        // Create and use a default value.
51        let default = BytesProperty::default();
52        default.set(&[0u8, 3u8]);
53
54        let state = get_state(4096);
55        let root = Node::new_root(state);
56        let node = root.create_child("node");
57        {
58            let property = node.create_bytes("property", b"test");
59            property.get_block::<_, Buffer>(|block| {
60                assert_eq!(block.block_type(), Some(BlockType::BufferValue));
61                assert_eq!(block.total_length(), 4);
62                assert_eq!(block.format(), Some(PropertyFormat::Bytes));
63            });
64            node.get_block::<_, inspect_format::Node>(|block| {
65                assert_eq!(block.child_count(), 1);
66            });
67
68            property.set(b"test-set");
69            property.get_block::<_, Buffer>(|block| {
70                assert_eq!(block.total_length(), 8);
71            });
72        }
73        node.get_block::<_, inspect_format::Node>(|block| {
74            assert_eq!(block.child_count(), 0);
75        });
76    }
77}
fuchsia_inspect/writer/types/bytes_property.rs

fuchsia_inspect/writer/types/
bytes_property.rs
