1 files changed, 73 insertions, 26 deletions

diff --git a/src/node.c b/src/node.c
index 36c2c8ca..523893df 100644
--- a/src/node.c
+++ b/src/node.c
@@ -39,6 +39,19 @@
 
 static const size_t serd_node_align = sizeof(SerdNode);
 
+typedef struct StaticNode {
+	SerdNode node;
+	char     buf[sizeof(NS_XSD) + sizeof("base64Binary") + 1];
+} StaticNode;
+
+#define DEFINE_XSD_NODE(name) \
+	static const StaticNode serd_xsd_ ## name = { \
+		{ sizeof(NS_XSD #name), 0, SERD_URI }, NS_XSD #name };
+
+DEFINE_XSD_NODE(decimal)
+DEFINE_XSD_NODE(integer)
+DEFINE_XSD_NODE(base64Binary)
+
 static SerdNode*
 serd_node_new_from_uri(const SerdURI* uri, const SerdURI* base);
 
@@ -46,7 +59,29 @@ static size_t
 serd_node_pad_size(const size_t n_bytes)
 {
 	const size_t pad = serd_node_align - (n_bytes + 2) % serd_node_align;
-	return n_bytes + 2 + pad;
+	const size_t size = n_bytes + 2 + pad;
+	assert(size % serd_node_align == 0);
+	return size;
+}
+
+static const SerdNode*
+serd_node_get_meta_c(const SerdNode* node)
+{
+	return node + 1 + (serd_node_pad_size(node->n_bytes) / serd_node_align);
+}
+
+static const SerdNode*
+serd_node_maybe_get_meta_c(const SerdNode* node)
+{
+	return (node->flags & (SERD_HAS_LANGUAGE | SERD_HAS_DATATYPE))
+		? (node + 1 + (serd_node_pad_size(node->n_bytes) / serd_node_align))
+		: NULL;
+}
+
+static SerdNode*
+serd_node_get_meta(SerdNode* node)
+{
+	return node + 1 + (serd_node_pad_size(node->n_bytes) / serd_node_align);
 }
 
 size_t
@@ -391,21 +426,26 @@ serd_digits(double abs)
 }
 
 SerdNode*
-serd_node_new_decimal(double d, unsigned frac_digits)
+serd_node_new_decimal(double d, unsigned frac_digits, const SerdNode* datatype)
 {
 	if (isnan(d) || isinf(d)) {
 		return NULL;
 	}
 
+	const SerdNode* type       = datatype ? datatype : &serd_xsd_decimal.node;
 	const double    abs_d      = fabs(d);
 	const unsigned  int_digits = serd_digits(abs_d);
 	const size_t    len        = int_digits + frac_digits + 3;
-	SerdNode* const node       = serd_node_malloc(len, 0, SERD_LITERAL);
-	char* const     buf        = serd_node_buffer(node);
-	const double    int_part   = floor(abs_d);
+	const size_t    type_len   = serd_node_total_size(type);
+	const size_t    total_len  = len + type_len;
+
+	SerdNode* const node =
+		serd_node_malloc(total_len, SERD_HAS_DATATYPE, SERD_LITERAL);
 
 	// Point s to decimal point location
-	char* s = buf + int_digits;
+	char* const  buf      = serd_node_buffer(node);
+	const double int_part = floor(abs_d);
+	char*        s        = buf + int_digits;
 	if (d < 0.0) {
 		*buf = '-';
 		++s;
@@ -443,19 +483,25 @@ serd_node_new_decimal(double d, unsigned frac_digits)
 		}
 	}
 
+	memcpy(serd_node_get_meta(node), type, type_len);
 	return node;
 }
 
 SerdNode*
-serd_node_new_integer(int64_t i)
+serd_node_new_integer(int64_t i, const SerdNode* datatype)
 {
-	int64_t        abs_i  = (i < 0) ? -i : i;
-	const unsigned digits = serd_digits(abs_i);
-	SerdNode*      node   = serd_node_malloc(digits + 2, 0, SERD_LITERAL);
-	char*          buf    = serd_node_buffer(node);
+	const SerdNode* type      = datatype ? datatype : &serd_xsd_integer.node;
+	int64_t         abs_i     = (i < 0) ? -i : i;
+	const unsigned  digits    = serd_digits(abs_i);
+	const size_t    type_len  = serd_node_total_size(type);
+	const size_t    total_len = digits + 2 + type_len;
+
+	SerdNode* node =
+		serd_node_malloc(total_len, SERD_HAS_DATATYPE, SERD_LITERAL);
 
 	// Point s to the end
-	char* s = buf + digits - 1;
+	char* buf = serd_node_buffer(node);
+	char* s   = buf + digits - 1;
 	if (i < 0) {
 		*buf = '-';
 		++s;
@@ -468,20 +514,30 @@ serd_node_new_integer(int64_t i)
 		*s-- = '0' + (abs_i % 10);
 	} while ((abs_i /= 10) > 0);
 
+	memcpy(serd_node_get_meta(node), type, type_len);
 	return node;
 }
 
 SerdNode*
-serd_node_new_blob(const void* buf, size_t size, bool wrap_lines)
+serd_node_new_blob(const void*     buf,
+                   size_t          size,
+                   bool            wrap_lines,
+                   const SerdNode* datatype)
 {
-	const size_t    len  = serd_base64_get_length(size, wrap_lines);
-	SerdNode* const node = serd_node_malloc(len + 1, 0, SERD_LITERAL);
+	const SerdNode* type      = datatype ? datatype : &serd_xsd_base64Binary.node;
+	const size_t    len       = serd_base64_get_length(size, wrap_lines);
+	const size_t    type_len  = serd_node_total_size(type);
+	const size_t    total_len = len + 1 + type_len;
+
+	SerdNode* const node =
+		serd_node_malloc(total_len, SERD_HAS_DATATYPE, SERD_LITERAL);
 
 	if (serd_base64_encode(serd_node_buffer(node), buf, size, wrap_lines)) {
 		node->flags |= SERD_HAS_NEWLINE;
 	}
 
 	node->n_bytes = len + 1;
+	memcpy(serd_node_get_meta(node), type, type_len);
 	return node;
 }
 
@@ -503,15 +559,6 @@ serd_node_get_length(const SerdNode* node)
 	return node ? node->n_bytes : 0;
 }
 
-static const SerdNode*
-serd_node_get_meta_node(const SerdNode* node)
-{
-	const size_t len = serd_node_pad_size(node->n_bytes);
-	assert((intptr_t)node % serd_node_align == 0);
-	assert(len % serd_node_align == 0);
-	return node + 1 + (len / serd_node_align);
-}
-
 const SerdNode*
 serd_node_get_datatype(const SerdNode* node)
 {
@@ -519,7 +566,7 @@ serd_node_get_datatype(const SerdNode* node)
 		return NULL;
 	}
 
-	const SerdNode* const datatype = serd_node_get_meta_node(node);
+	const SerdNode* const datatype = serd_node_get_meta_c(node);
 	assert(datatype->type == SERD_URI || datatype->type == SERD_CURIE);
 	return datatype;
 }
@@ -531,7 +578,7 @@ serd_node_get_language(const SerdNode* node)
 		return NULL;
 	}
 
-	const SerdNode* const lang = serd_node_get_meta_node(node);
+	const SerdNode* const lang = serd_node_get_meta_c(node);
 	assert(lang->type == SERD_LITERAL);
 	return lang;
 }