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| 1 | +use linked_data_core::{RdfEnum, RdfField, RdfStruct, RdfType, RdfVariant, TokenGenerator}; |
| 2 | +use proc_macro_error::proc_macro_error; |
| 3 | +use proc_macro2::{Literal, TokenStream}; |
| 4 | +use quote::ToTokens; |
| 5 | +use syn::DeriveInput; |
| 6 | +use uuid::Uuid; |
| 7 | + |
| 8 | +#[proc_macro_error] |
| 9 | +#[proc_macro_derive(LinkedDataSchema, attributes(ld))] |
| 10 | +pub fn derive_serialize(item: proc_macro::TokenStream) -> proc_macro::TokenStream { |
| 11 | + let raw_input = syn::parse_macro_input!(item as DeriveInput); |
| 12 | + let linked_data_type: RdfType<Schema> = RdfType::from_derive(raw_input); |
| 13 | + |
| 14 | + let mut output = TokenStream::new(); |
| 15 | + linked_data_type.to_tokens(&mut output); |
| 16 | + output.into() |
| 17 | +} |
| 18 | + |
| 19 | +#[derive(Debug)] |
| 20 | +struct Schema; |
| 21 | + |
| 22 | +impl TokenGenerator for Schema { |
| 23 | + fn generate_type_tokens(linked_data_type: &RdfType<Self>, tokens: &mut TokenStream) { |
| 24 | + let implementations = match linked_data_type { |
| 25 | + RdfType::Enum(rdf_enum) => quote::quote! {#rdf_enum}, |
| 26 | + RdfType::Struct(rdf_struct) => quote::quote! {#rdf_struct}, |
| 27 | + }; |
| 28 | + |
| 29 | + tokens.extend(implementations) |
| 30 | + } |
| 31 | + |
| 32 | + fn generate_struct_tokens(rdf_struct: &RdfStruct<Self>, tokens: &mut TokenStream) { |
| 33 | + let type_iri = rdf_struct.type_iri().unwrap(); |
| 34 | + |
| 35 | + let type_iri_shape = Literal::string(&format!("{}Shape", type_iri.as_str())); |
| 36 | + let type_iri = Literal::string(type_iri.as_str()); |
| 37 | + |
| 38 | + let prefix_mapping = rdf_struct.prefix_mappings().clone(); |
| 39 | + |
| 40 | + let insert_all_prefix_mapping = prefix_mapping |
| 41 | + .into_iter() |
| 42 | + .map(|(prefix, iri)| { |
| 43 | + let prefix = Literal::string(&prefix.to_string()); |
| 44 | + let iri = Literal::string(&iri); |
| 45 | + |
| 46 | + quote::quote! { |
| 47 | + prefix_map.insert(#prefix, &iri!(#iri)).unwrap(); |
| 48 | + } |
| 49 | + }) |
| 50 | + .collect::<TokenStream>(); |
| 51 | + |
| 52 | + let ident = &rdf_struct.ident; |
| 53 | + let fields = &rdf_struct.fields; |
| 54 | + |
| 55 | + let property_shapes_iris = fields |
| 56 | + .iter() |
| 57 | + .map(|field| { |
| 58 | + if let Some(predicate) = field.predicate() { |
| 59 | + let identifier = Literal::string(&format!("{}Field", predicate.as_str())); |
| 60 | + |
| 61 | + quote::quote! { |
| 62 | + RDFNode::iri(IriS::from_str(#identifier).unwrap()), |
| 63 | + } |
| 64 | + } else { |
| 65 | + quote::quote! {} |
| 66 | + } |
| 67 | + }) |
| 68 | + .collect::<TokenStream>(); |
| 69 | + |
| 70 | + let struct_blank_node = Literal::string(Uuid::new_v4().to_string().as_str()); |
| 71 | + |
| 72 | + tokens.extend(quote::quote! { |
| 73 | + impl ::linked_data_schema::LinkedDataSchemaFieldVisitor for #ident { |
| 74 | + fn field_components() -> Vec<::linked_data_schema::reexports::shacl_ast::ast::component::Component> { |
| 75 | + Self::components() |
| 76 | + } |
| 77 | + |
| 78 | + fn type_iri_ref() -> Option<::linked_data_schema::reexports::prefixmap::IriRef> { |
| 79 | + use ::linked_data_schema::reexports::prefixmap::IriRef; |
| 80 | + use ::linked_data_schema::reexports::iri_s::iri; |
| 81 | + |
| 82 | + Some(IriRef::iri(iri!(#type_iri_shape))) |
| 83 | + } |
| 84 | + } |
| 85 | + |
| 86 | + impl ::linked_data_schema::LinkedDataSchema for #ident { |
| 87 | + fn shacl() -> ::linked_data_schema::reexports::shacl_ast::Schema<::linked_data_schema::reexports::srdf::SRDFGraph> { |
| 88 | + use ::linked_data_schema::{ |
| 89 | + reexports::{ |
| 90 | + iri_s::{iris::IriS, iri}, |
| 91 | + prefixmap::{PrefixMap, IriRef}, |
| 92 | + shacl_ast::{ |
| 93 | + ast::{ |
| 94 | + component::Component, |
| 95 | + shape::Shape, |
| 96 | + node_shape::NodeShape, |
| 97 | + property_shape::PropertyShape, |
| 98 | + target::Target, |
| 99 | + }, |
| 100 | + Schema, |
| 101 | + }, |
| 102 | + srdf::{ |
| 103 | + RDFNode, |
| 104 | + SHACLPath, |
| 105 | + }, |
| 106 | + }, |
| 107 | + LinkedDataSchemaFieldVisitor, |
| 108 | + }; |
| 109 | + use std::str::FromStr; |
| 110 | + use std::collections::HashMap; |
| 111 | + |
| 112 | + let mut prefix_map = PrefixMap::new(); |
| 113 | + #insert_all_prefix_mapping |
| 114 | + |
| 115 | + let mut shapes = HashMap::default(); |
| 116 | + |
| 117 | + let rdf_node_type_iri = RDFNode::iri(IriS::from_str(#type_iri_shape).unwrap()); |
| 118 | + |
| 119 | + let property_shapes = vec![ |
| 120 | + #property_shapes_iris |
| 121 | + ]; |
| 122 | + |
| 123 | + let node_shape = NodeShape::new(rdf_node_type_iri.clone()) |
| 124 | + .with_targets(vec![Target::TargetClass(RDFNode::iri(IriS::from_str(#type_iri).unwrap()))]) |
| 125 | + .with_closed(true) |
| 126 | + .with_property_shapes(property_shapes); |
| 127 | + |
| 128 | + let _ = shapes.insert(RDFNode::BlankNode(#struct_blank_node.to_string()), Shape::NodeShape(Box::new(node_shape))); |
| 129 | + |
| 130 | + #(#fields)* |
| 131 | + |
| 132 | + Schema::default() |
| 133 | + .with_prefixmap(prefix_map) |
| 134 | + .with_shapes(shapes) |
| 135 | + } |
| 136 | + |
| 137 | + fn components() -> Vec<::linked_data_schema::reexports::shacl_ast::ast::component::Component> { |
| 138 | + use ::linked_data_schema::{ |
| 139 | + reexports::{ |
| 140 | + iri_s::iri, |
| 141 | + prefixmap::IriRef, |
| 142 | + shacl_ast::ast::component::Component, |
| 143 | + } |
| 144 | + }; |
| 145 | + |
| 146 | + vec![ |
| 147 | + Component::Datatype(IriRef::iri(iri!(#type_iri_shape))), |
| 148 | + ] |
| 149 | + } |
| 150 | + } |
| 151 | + }) |
| 152 | + } |
| 153 | + |
| 154 | + fn generate_enum_tokens(r#enum: &RdfEnum<Self>, tokens: &mut TokenStream) { |
| 155 | + let _variants = &r#enum.variants; |
| 156 | + let ident = &r#enum.ident; |
| 157 | + |
| 158 | + tokens.extend(quote::quote! { |
| 159 | + impl ::linked_data_schema::LinkedDataSchema for #ident { |
| 160 | + fn shacl() -> ::linked_data_schema::reexports::shacl_ast::Schema<::linked_data_schema::reexports::srdf::SRDFGraph> { |
| 161 | + use ::linked_data_schema::reexports::{ |
| 162 | + prefixmap::PrefixMap, |
| 163 | + shacl_ast::{ |
| 164 | + ast::shape::Shape, |
| 165 | + Schema, |
| 166 | + }, |
| 167 | + srdf::RDFNode, |
| 168 | + }; |
| 169 | + use std::collections::HashMap; |
| 170 | + |
| 171 | + let prefix_map = PrefixMap::new(); |
| 172 | + let shapes = HashMap::default(); |
| 173 | + |
| 174 | + Schema::default() |
| 175 | + .with_prefixmap(prefix_map) |
| 176 | + .with_shapes(shapes) |
| 177 | + } |
| 178 | + } |
| 179 | + }) |
| 180 | + } |
| 181 | + |
| 182 | + fn generate_variant_tokens(_variant: &RdfVariant<Self>, _tokens: &mut TokenStream) { |
| 183 | + todo!() |
| 184 | + } |
| 185 | + |
| 186 | + fn generate_field_tokens(field: &RdfField<Self>, tokens: &mut TokenStream) { |
| 187 | + if field.is_ignored() { |
| 188 | + return; |
| 189 | + } |
| 190 | + |
| 191 | + //if field.is_flattened() { |
| 192 | + |
| 193 | + //} |
| 194 | + |
| 195 | + if let Some(predicate) = field.predicate() { |
| 196 | + let identifier = Literal::string(&format!("{}Field", predicate.as_str())); |
| 197 | + let predicate = Literal::string(predicate.as_str()); |
| 198 | + |
| 199 | + let field_type = &field.ty; |
| 200 | + |
| 201 | + tokens.extend(quote::quote! { |
| 202 | + let node = RDFNode::BlankNode(::linked_data_schema::reexports::uuid::Uuid::new_v4().to_string()); |
| 203 | + |
| 204 | + let rdf_node_type_iri = RDFNode::iri(IriS::from_str(#identifier).unwrap()); |
| 205 | + |
| 206 | + let property_shape = PropertyShape::new( |
| 207 | + rdf_node_type_iri, |
| 208 | + SHACLPath::iri(IriS::from_str(#predicate).unwrap()), |
| 209 | + ).with_components(<#field_type>::field_components()); |
| 210 | + |
| 211 | + let _ = shapes.insert(node, Shape::PropertyShape(Box::new(property_shape))); |
| 212 | + }) |
| 213 | + } |
| 214 | + } |
| 215 | +} |
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