Struct ExternalResolver 

pub struct ExternalResolver {
    pub funcs_by_id: HashMap<usize, (Arc<ExternalLibrary>, String)>,
}

Resolved AMPL imported function: shared library + registered name. NlProblem carries one of these per ImportedFunc id when external functions are wired up at problem-build time. The same Arc<ExternalLibrary> may be shared across many funcall ids (one library typically registers several functions).

Fields

funcs_by_id: HashMap<usize, (Arc<ExternalLibrary>, String)>

Funcall { id } -> (library, registered function name).

Implementations

impl ExternalResolver

pub fn is_empty(&self) -> bool

pub fn build_for_problem( imported_funcs: &[ImportedFunc], referenced_ids: &BTreeSet<usize>, ) -> Result<Self, String>

Build a resolver for every ImportedFunc declared in the .nl file that is actually referenced somewhere in the problem’s expressions.

Library paths are resolved through the AMPLFUNC environment variable (a \n-separated list of shared-library paths, matching AMPL/IPOPT conventions). Each path is loaded once and queried for every name we need. Returns an error if a referenced name cannot be found in any listed library, or if AMPLFUNC is missing.

Trait Implementations

impl Clone for ExternalResolver

fn clone(&self) -> ExternalResolver

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ExternalResolver

fn default() -> ExternalResolver

Returns the “default value” for a type.