dtcs 0.3.0

Reference implementation of the Data Transformation Contract Standard (DTCS)
Documentation 
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//! Semantic action model.

use serde::{Deserialize, Serialize};

use super::identifiers::is_vendor_namespaced_identifier;
use super::metadata::Metadata;

/// A standardized semantic action declaration.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct SemanticAction {
    /// Stable action instance identifier.
    pub id: String,
    /// Semantic action registry identifier (for example `dtcs:lowercase`).
    pub action: String,
    /// Target field or object reference.
    pub target: String,
    /// Object metadata (SPEC Chapter 5 ยง3).
    #[serde(default, skip_serializing_if = "Option::is_none")]
    pub metadata: Option<Metadata>,
}

/// Known standard semantic actions for MVP validation.
pub const KNOWN_ACTIONS: &[&str] = &["dtcs:lowercase"];

/// Returns `true` when the action identifier is recognized.
#[must_use]
pub fn is_known_action(action: &str) -> bool {
    KNOWN_ACTIONS.contains(&action) || is_vendor_namespaced_identifier(action)
}