Trait DocumentResolvedExt

Source

pub trait DocumentResolvedExt {
    // Required methods
    fn get_resolved(&self, key: impl AsYaml) -> Option<YamlValue>;
    fn build_anchor_registry(&self) -> AnchorRegistry;
}

Expand description

Extension trait for Document to support resolved lookups

Required Methods§

Source

fn get_resolved(&self, key: impl AsYaml) -> Option<YamlValue>

Get a value with anchor/alias resolution

This method resolves aliases (*alias) to their anchored values (&anchor), and supports merge keys (<<) for combining mappings.

§Examples

use yaml_edit::Document;
use yaml_edit::anchor_resolution::DocumentResolvedExt;
use std::str::FromStr;

let yaml = r#"
config: &cfg
  port: 8080
server: *cfg
"#;
let doc = Document::from_str(yaml).unwrap();

// Get with resolution - expands the *cfg alias
if let Some(resolved_value) = doc.get_resolved("server") {
    if let Some(server) = resolved_value.as_mapping() {
        if let Some(port) = server.get("port") {
            assert_eq!(port.to_i64(), Some(8080));
        }
    }
}