shacl 0.3.1

A SHACL validator for RDF data, implemented in Rust.
Documentation 
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use crate::error::ValidationError;
use crate::ir::components::Class;
use crate::ir::{IRComponent, IRSchema, IRShape};
use crate::validator::constraints::{NativeValidator, SparqlValidator, validate_ask_with, validate_with};
use crate::validator::engine::Engine;
use crate::validator::iteration::ValueNodeIteration;
use crate::validator::nodes::ValueNodes;
use crate::validator::report::ValidationResult;
use indoc::formatdoc;
use rudof_rdf::rdf_core::query::QueryRDF;
use rudof_rdf::rdf_core::term::Term;
use rudof_rdf::rdf_core::vocabs::{RdfVocab, RdfsVocab};
use rudof_rdf::rdf_core::{NeighsRDF, SHACLPath};
use std::fmt::Debug;

impl<S: NeighsRDF + 'static> NativeValidator<S> for Class {
    fn validate_native(
        &self,
        component: &IRComponent,
        shape: &IRShape,
        store: &S,
        _: &mut dyn Engine<S>,
        value_nodes: &ValueNodes<S>,
        _: Option<&IRShape>,
        maybe_path: Option<&SHACLPath>,
        _: &IRSchema,
    ) -> Result<Vec<ValidationResult>, ValidationError> {
        let class_fn = |vn: &S::Term| {
            if vn.is_literal() {
                return true;
            }
            let term = S::object_as_term(self.class_rule());

            !store
                .objects_for(vn, &RdfVocab::rdf_type().into())
                .unwrap_or_default()
                .iter()
                .any(|ctype| {
                    ctype == &term
                        || store
                            .objects_for(ctype, &RdfsVocab::rdfs_subclass_of_str().into())
                            .unwrap_or_default()
                            .contains(&term)
                })
        };

        validate_with(
            component,
            shape,
            value_nodes,
            ValueNodeIteration,
            class_fn,
            &format!("Class constraint not satisfied for class {}", self.class_rule()),
            maybe_path,
        )
    }
}

#[cfg(feature = "sparql")]
impl<S: QueryRDF + Debug + 'static> SparqlValidator<S> for Class {
    fn validate_sparql(
        &self,
        component: &IRComponent,
        shape: &IRShape,
        store: &S,
        value_nodes: &ValueNodes<S>,
        _: Option<&IRShape>,
        maybe_path: Option<&SHACLPath>,
        _: &IRSchema,
    ) -> Result<Vec<ValidationResult>, ValidationError> {
        let query_fn = |vn: &S::Term| {
            formatdoc! {"
                PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
                PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
                ASK {{ {} rdf:type/rdfs:subClassOf* {} }}
            ", vn, self.class_rule()
            }
        };

        validate_ask_with(
            component,
            shape,
            store,
            value_nodes,
            query_fn,
            &format!("Class constraint not satisfied for class {}", self.class_rule()),
            maybe_path,
        )
    }
}