Method resolve_function_name

src/resolution.rs:784–810

Resolve a function name using use-map and namespace context. Builds a list of candidate names (exact name, use-map resolved, namespace-qualified) and tries each via `find_or_load_function`. This is the single canonical implementation of the "function_loader" logic used by both the completion handler and definition resolver.

(
        &self,
        name: &str,
        file_use_map: &HashMap<String, String>,
        file_namespace: &Option<String>,
    )

    /// This is the single canonical implementation of the "function_loader"
    /// logic used by both the completion handler and definition resolver.
    pub(crate) fn resolve_function_name(
        &self,
        name: &str,
        file_use_map: &HashMap<String, String>,
        file_namespace: &Option<String>,
    ) -> Option<FunctionInfo> {
        // Build candidate names to try: exact name, use-map
        // resolved name, and namespace-qualified name.
        let mut candidates: Vec<&str> = vec![name];

        let use_resolved: Option<String> = file_use_map.get(name).cloned();
        if let Some(ref fqn) = use_resolved {
            candidates.push(fqn.as_str());
        }

        let ns_qualified: Option<String> = file_namespace
            .as_ref()
            .map(|ns| format!("{}\\{}", ns, name));
        if let Some(ref nq) = ns_qualified {
            candidates.push(nq.as_str());
        }

        // Unified lookup: checks global_functions first, then
        // falls back to embedded PHP stubs (parsed lazily and
        // cached for future lookups).
        self.find_or_load_function(&candidates)
    }

    // ─── Loader Closure Factories ───────────────────────────────────────