diff options
Diffstat (limited to 'include/serd/serd.h')
| -rw-r--r-- | include/serd/serd.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/include/serd/serd.h b/include/serd/serd.h index 82292389..a98b2b8a 100644 --- a/include/serd/serd.h +++ b/include/serd/serd.h @@ -535,7 +535,8 @@ typedef struct SerdNodeImpl SerdNode; An RDF node, in the abstract sense, can be either a resource, literal, or a blank. This type is more precise, because syntactically there are two ways - to refer to a resource (by URI or CURIE). + to refer to a resource (by URI or CURIE). Serd also has support for + variable nodes to support some features, which are not RDF nodes. There are also two ways to refer to a blank node in syntax (by ID or anonymously), but this is handled by statement flags rather than distinct @@ -574,7 +575,16 @@ typedef enum { is meaningful only within this serialisation. @see [RDF 1.1 Turtle](http://www.w3.org/TR/turtle/#grammar-production-BLANK_NODE_LABEL) */ - SERD_BLANK = 4 + SERD_BLANK = 4, + + /** + A variable node. + + Value is a variable name without any syntactic prefix, like "name", + which is meaningful only within this serialisation. @see [SPARQL 1.1 + Query Language](https://www.w3.org/TR/sparql11-query/#rVar) + */ + SERD_VARIABLE = 5 } SerdNodeType; /** @@ -1556,7 +1566,8 @@ typedef struct SerdReaderImpl SerdReader; /// Reader options typedef enum { - SERD_READ_LAX = 1u << 0u ///< Tolerate invalid input where possible + SERD_READ_LAX = 1u << 0u, ///< Tolerate invalid input where possible + SERD_READ_VARIABLES = 1u << 1u ///< Support variable nodes } SerdReaderFlag; /// Bitwise OR of SerdReaderFlag values |