pakx-core 0.1.6

pakx core — manifest, lockfile, resolver, installer logic
Documentation 
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

//! Parse `agents.yml` source text into a validated [`Manifest`].

use std::path::Path;

use crate::errors::ManifestError;

use super::schema::Manifest;

/// Parse a YAML manifest. If `path` is supplied, it is attached to any
/// returned error for diagnostic display.
pub fn parse_manifest(source: &str, path: Option<&Path>) -> Result<Manifest, ManifestError> {
    // First check the source actually decodes to a mapping; serde_yaml_ng
    // would otherwise produce a less specific schema error on inputs
    // that are valid YAML but the wrong shape (sequence, scalar).
    let value: serde_yaml_ng::Value =
        serde_yaml_ng::from_str(source).map_err(|source| ManifestError::ParseYaml {
            source,
            path: path.map(Path::to_path_buf),
        })?;

    if !value.is_mapping() {
        return Err(ManifestError::Schema {
            message: "top level must be a YAML mapping".into(),
            path: path.map(Path::to_path_buf),
        });
    }

    serde_yaml_ng::from_value::<Manifest>(value).map_err(|source| ManifestError::Schema {
        message: source.to_string(),
        path: path.map(Path::to_path_buf),
    })
}