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authorDavid Robillard <d@drobilla.net>2021-04-11 22:07:39 -0400
committerDavid Robillard <d@drobilla.net>2022-01-14 19:37:51 -0500
commite9b773bf452f0df0ea69e363bcb5899fea124b28 (patch)
tree6cec0e4c4d93e2fbb56576fc6992169bd985fd52
parent37b14ad8b07f7e8d647e15a05339d31f2ee4dd58 (diff)
downloadserd-e9b773bf452f0df0ea69e363bcb5899fea124b28.tar.gz
serd-e9b773bf452f0df0ea69e363bcb5899fea124b28.tar.bz2
serd-e9b773bf452f0df0ea69e363bcb5899fea124b28.zip
Add model
-rw-r--r--NEWS1
-rw-r--r--doc/conf.py.in4
-rw-r--r--doc/serdi.122
-rw-r--r--include/serd/serd.h409
-rw-r--r--meson.build7
-rw-r--r--src/.clang-tidy1
-rw-r--r--src/compare.c158
-rw-r--r--src/compare.h54
-rw-r--r--src/cursor.c224
-rw-r--r--src/cursor.h83
-rw-r--r--src/describe.c266
-rw-r--r--src/inserter.c122
-rw-r--r--src/model.c728
-rw-r--r--src/model.h37
-rw-r--r--src/reader.c2
-rw-r--r--src/serdi.c59
-rw-r--r--src/statement.c8
-rw-r--r--src/string.c4
-rw-r--r--test/.clang-tidy1
-rw-r--r--test/meson.build2
-rwxr-xr-xtest/run_test_suite.py42
-rw-r--r--test/test_cursor.c114
-rw-r--r--test/test_free_null.c3
-rw-r--r--test/test_model.c1396
-rw-r--r--test/test_string.c2
25 files changed, 3735 insertions, 14 deletions
diff --git a/NEWS b/NEWS
index 580f1346..21dad0a1 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,7 @@ serd (1.0.1) unstable;
* Add SerdBuffer for mutable buffers to keep SerdChunk const-correct
* Add SerdWorld for shared library state
* Add extensible logging API
+ * Add model for storing statements in memory
* Add option for writing terse output without newlines
* Add support for parsing variables
* Add support for writing terse collections
diff --git a/doc/conf.py.in b/doc/conf.py.in
index 5fdf1220..059f096f 100644
--- a/doc/conf.py.in
+++ b/doc/conf.py.in
@@ -14,6 +14,7 @@ pygments_style = "friendly"
try:
import sphinx_lv2_theme
+
have_lv2_theme = True
except ModuleNotFoundError:
have_lv2_theme = False
@@ -24,6 +25,7 @@ _opaque = [
"SerdByteSinkImpl",
"SerdByteSourceImpl",
"SerdCaretImpl",
+ "SerdCursorImpl",
"SerdEnvImpl",
"SerdIterImpl",
"SerdModelImpl",
@@ -55,7 +57,7 @@ html_theme = "sphinx_lv2_theme"
if have_lv2_theme:
html_theme = "sphinx_lv2_theme"
- if tags.has('singlehtml'):
+ if tags.has("singlehtml"):
html_sidebars = {
"**": [
"globaltoc.html",
diff --git a/doc/serdi.1 b/doc/serdi.1
index 495c3940..e9d70857 100644
--- a/doc/serdi.1
+++ b/doc/serdi.1
@@ -1,12 +1,12 @@
-.Dd March 6, 2021
+.Dd April 14, 2021
.Dt SERDI 1
.Os Serd 0.30.11
.Sh NAME
.Nm serdi
-.Nd read and write RDF syntax
+.Nd read, transform, and write RDF data
.Sh SYNOPSIS
.Nm serdi
-.Op Fl abefhlqtvx
+.Op Fl abefhlmqtvx
.Op Fl I Ar base
.Op Fl c Ar prefix
.Op Fl i Ar syntax
@@ -19,8 +19,8 @@
.Ar input ...
.Sh DESCRIPTION
.Nm
-is a fast command-line utility for streaming and processing RDF data.
-It reads one or more RDF documents and writes the data again,
+is a fast command-line utility for processing RDF data.
+It reads one or more documents and writes the data again,
possibly transformed and/or in a different syntax.
By default,
the input syntax is guessed from the file extension,
@@ -64,7 +64,11 @@ This is useful when reading from a pipe since output will be generated immediate
With this option serdi uses one page less memory, but will likely be significantly slower.
.Pp
.It Fl f
-Keep full URIs in input (don't qualify with namespace prefixes or make URIs relative).
+Fast and loose mode.
+This disables shortening URIs into prefixed names or relative URI references.
+If the model is enabled, then this writes the model quickly in sorted order.
+Note that doing so with TriG or Turtle may make the output ugly,
+since blank nodes will not be inlined.
.Pp
.It Fl h
Print the command line options.
@@ -92,6 +96,12 @@ Lax (non-strict) parsing.
If this is enabled, recoverable syntax errors will print a warning, but parsing will proceed starting at the next statement if possible.
Note that data may be lost when using this option.
.Pp
+.It Fl m
+Build a model in memory.
+This loads all of the input into memory before writing the output.
+This will reorder statements and eliminate duplicates, at the cost of performance and memory consumption.
+When writing TriG or Turtle, this may enable better pretty-printing with more inline descriptions.
+.Pp
.It Fl o Ar syntax
Write output as
.Ar syntax .
diff --git a/include/serd/serd.h b/include/serd/serd.h
index 77986150..efa48543 100644
--- a/include/serd/serd.h
+++ b/include/serd/serd.h
@@ -205,6 +205,7 @@ typedef enum {
SERD_ERR_UNKNOWN, ///< Unknown error
SERD_ERR_BAD_SYNTAX, ///< Invalid syntax
SERD_ERR_BAD_ARG, ///< Invalid argument
+ SERD_ERR_BAD_CURSOR, ///< Use of invalidated cursor
SERD_ERR_NOT_FOUND, ///< Not found
SERD_ERR_ID_CLASH, ///< Encountered clashing blank node IDs
SERD_ERR_BAD_CURIE, ///< Invalid CURIE or unknown namespace prefix
@@ -215,6 +216,7 @@ typedef enum {
SERD_ERR_NO_DATA, ///< Unexpected end of input
SERD_ERR_BAD_CALL, ///< Invalid call
SERD_ERR_BAD_URI, ///< Invalid or unresolved URI
+ SERD_ERR_BAD_INDEX, ///< No optimal model index available
} SerdStatus;
/**
@@ -547,7 +549,7 @@ serd_write_file_uri(SerdStringView path,
@{
*/
-/// A syntactic RDF node
+/// An RDF node
typedef struct SerdNodeImpl SerdNode;
/**
@@ -2432,6 +2434,411 @@ serd_writer_finish(SerdWriter* SERD_NONNULL writer);
/**
@}
+ @defgroup serd_cursor Cursor
+ @{
+*/
+
+/**
+ A cursor that iterates over statements in a model.
+
+ A cursor is a smart iterator that visits all statements that match a
+ pattern.
+*/
+typedef struct SerdCursorImpl SerdCursor;
+
+/// Return a new copy of `cursor`
+SERD_API
+SerdCursor* SERD_ALLOCATED
+serd_cursor_copy(const SerdCursor* SERD_NULLABLE cursor);
+
+/// Return the statement pointed to by `cursor`
+SERD_API
+const SerdStatement* SERD_NULLABLE
+serd_cursor_get(const SerdCursor* SERD_NONNULL cursor);
+
+/**
+ Increment cursor to point to the next statement.
+
+ @return Failure if `cursor` was already at the end.
+*/
+SERD_API
+SerdStatus
+serd_cursor_advance(SerdCursor* SERD_NONNULL cursor);
+
+/// Return true if the cursor has reached its end
+SERD_PURE_API
+bool
+serd_cursor_is_end(const SerdCursor* SERD_NULLABLE cursor);
+
+/**
+ Return true iff `lhs` equals `rhs`.
+
+ Two cursors are equivalent if they point to the same statement in the same
+ index in the same model, or are both the end of the same model. Note that
+ two cursors can point to the same statement but not be equivalent, since
+ they may have reached the statement via different indices.
+*/
+SERD_PURE_API
+bool
+serd_cursor_equals(const SerdCursor* SERD_NULLABLE lhs,
+ const SerdCursor* SERD_NULLABLE rhs);
+
+/// Free `cursor`
+SERD_API
+void
+serd_cursor_free(SerdCursor* SERD_NULLABLE cursor);
+
+/**
+ @}
+ @defgroup serd_range Range
+ @{
+*/
+
+/// Flags that control the style of a model serialisation
+typedef enum {
+ SERD_NO_INLINE_OBJECTS = 1u << 0u ///< Disable object inlining
+} SerdDescribeFlag;
+
+/// Bitwise OR of SerdDescribeFlag values
+typedef uint32_t SerdDescribeFlags;
+
+/**
+ Describe a range of statements by writing to a sink.
+
+ This will consume the given cursor, and emit at least every statement it
+ visits. More statements from the model may be written in order to describe
+ anonymous blank nodes that are associated with a subject in the range.
+
+ The default is to write statements in an order suited for pretty-printing
+ with Turtle or TriG with as many anonymous nodes as possible. If
+ `SERD_NO_INLINE_OBJECTS` is given, a simple sorted stream is written
+ instead, which is faster since no searching is required, but can result in
+ ugly output for Turtle or Trig.
+*/
+SERD_API
+SerdStatus
+serd_describe_range(const SerdCursor* SERD_NULLABLE range,
+ const SerdSink* SERD_NONNULL sink,
+ SerdDescribeFlags flags);
+
+/**
+ @}
+ @defgroup serd_model Model
+ @{
+*/
+
+/// An indexed set of statements
+typedef struct SerdModelImpl SerdModel;
+
+/**
+ Statement ordering.
+
+ Statements themselves always have the same fields in the same order
+ (subject, predicate, object, graph), but a model can keep indices for
+ different orderings to provide good performance for different kinds of
+ queries.
+*/
+typedef enum {
+ SERD_ORDER_SPO, ///< Subject, Predicate, Object
+ SERD_ORDER_SOP, ///< Subject, Object, Predicate
+ SERD_ORDER_OPS, ///< Object, Predicate, Subject
+ SERD_ORDER_OSP, ///< Object, Subject, Predicate
+ SERD_ORDER_PSO, ///< Predicate, Subject, Object
+ SERD_ORDER_POS, ///< Predicate, Object, Subject
+ SERD_ORDER_GSPO, ///< Graph, Subject, Predicate, Object
+ SERD_ORDER_GSOP, ///< Graph, Subject, Object, Predicate
+ SERD_ORDER_GOPS, ///< Graph, Object, Predicate, Subject
+ SERD_ORDER_GOSP, ///< Graph, Object, Subject, Predicate
+ SERD_ORDER_GPSO, ///< Graph, Predicate, Subject, Object
+ SERD_ORDER_GPOS ///< Graph, Predicate, Object, Subject
+} SerdStatementOrder;
+
+/// Flags that control model storage and indexing
+typedef enum {
+ SERD_STORE_GRAPHS = 1u << 0u, ///< Store and index the graph of statements
+ SERD_STORE_CARETS = 1u << 1u, ///< Store original caret of statements
+} SerdModelFlag;
+
+/// Bitwise OR of SerdModelFlag values
+typedef uint32_t SerdModelFlags;
+
+/**
+ Create a new model.
+
+ @param world The world in which to make this model.
+
+ @param default_order The order for the default index, which is always
+ present and responsible for owning all the statements in the model. This
+ should almost always be #SERD_ORDER_SPO or #SERD_ORDER_GSPO (which
+ support writing pretty documents), but advanced applications that do not want
+ either of these indices can use a different order. Additional indices can
+ be added with serd_model_add_index().
+
+ @param flags Options that control what data is stored in the model.
+*/
+SERD_API
+SerdModel* SERD_ALLOCATED
+serd_model_new(SerdWorld* SERD_NONNULL world,
+ SerdStatementOrder default_order,
+ SerdModelFlags flags);
+
+/// Return a deep copy of `model`
+SERD_API
+SerdModel* SERD_ALLOCATED
+serd_model_copy(const SerdModel* SERD_NONNULL model);
+
+/// Return true iff `a` is equal to `b`, ignoring statement cursor metadata
+SERD_API
+bool
+serd_model_equals(const SerdModel* SERD_NULLABLE a,
+ const SerdModel* SERD_NULLABLE b);
+
+/// Close and free `model`
+SERD_API
+void
+serd_model_free(SerdModel* SERD_NULLABLE model);
+
+/**
+ Add an index for a particular statement order to the model.
+
+ @return Failure if this index already exists.
+*/
+SERD_API
+SerdStatus
+serd_model_add_index(SerdModel* SERD_NONNULL model, SerdStatementOrder order);
+
+/**
+ Add an index for a particular statement order to the model.
+
+ @return Failure if this index does not exist.
+*/
+SERD_API
+SerdStatus
+serd_model_drop_index(SerdModel* SERD_NONNULL model, SerdStatementOrder order);
+
+/// Get the world associated with `model`
+SERD_PURE_API
+SerdWorld* SERD_NONNULL
+serd_model_world(SerdModel* SERD_NONNULL model);
+
+/// Get all nodes interned in `model`
+SERD_PURE_API
+const SerdNodes* SERD_NONNULL
+serd_model_nodes(const SerdModel* SERD_NONNULL model);
+
+/// Get the default statement order of `model`
+SERD_PURE_API
+SerdStatementOrder
+serd_model_default_order(const SerdModel* SERD_NONNULL model);
+
+/// Get the flags enabled on `model`
+SERD_PURE_API
+SerdModelFlags
+serd_model_flags(const SerdModel* SERD_NONNULL model);
+
+/// Return the number of statements stored in `model`
+SERD_PURE_API
+size_t
+serd_model_size(const SerdModel* SERD_NONNULL model);
+
+/// Return true iff there are no statements stored in `model`
+SERD_PURE_API
+bool
+serd_model_empty(const SerdModel* SERD_NONNULL model);
+
+/**
+ Return a cursor at the start of every statement in the model.
+
+ The returned cursor will advance over every statement in the model's default
+ order.
+*/
+SERD_API
+SerdCursor* SERD_ALLOCATED
+serd_model_begin(const SerdModel* SERD_NONNULL model);
+
+/**
+ Return a cursor past the end of the model.
+
+ This returns the "universal" end cursor, which is equivalent to any cursor
+ for this model that has reached its end.
+*/
+SERD_CONST_API
+const SerdCursor* SERD_NONNULL
+serd_model_end(const SerdModel* SERD_NONNULL model);
+
+/// Return a cursor over all statements in the model in a specific order
+SERD_API
+SerdCursor* SERD_ALLOCATED
+serd_model_begin_ordered(const SerdModel* SERD_NONNULL model,
+ SerdStatementOrder order);
+
+/**
+ Search for statements that match a pattern.
+
+ @return An iterator to the first match, or NULL if no matches found.
+*/
+SERD_API
+SerdCursor* SERD_ALLOCATED
+serd_model_find(const SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE s,
+ const SerdNode* SERD_NULLABLE p,
+ const SerdNode* SERD_NULLABLE o,
+ const SerdNode* SERD_NULLABLE g);
+
+/**
+ Search for a single node that matches a pattern.
+
+ Exactly one of `s`, `p`, `o` must be NULL.
+ This function is mainly useful for predicates that only have one value.
+
+ @return The first matching node, or NULL if no matches are found.
+*/
+SERD_API
+const SerdNode* SERD_NULLABLE
+serd_model_get(const SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE s,
+ const SerdNode* SERD_NULLABLE p,
+ const SerdNode* SERD_NULLABLE o,
+ const SerdNode* SERD_NULLABLE g);
+
+/**
+ Search for a single statement that matches a pattern.
+
+ This function is mainly useful for predicates that only have one value.
+
+ @return The first matching statement, or NULL if none are found.
+*/
+SERD_API
+const SerdStatement* SERD_NULLABLE
+serd_model_get_statement(const SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE s,
+ const SerdNode* SERD_NULLABLE p,
+ const SerdNode* SERD_NULLABLE o,
+ const SerdNode* SERD_NULLABLE g);
+
+/// Return true iff a statement exists
+SERD_API
+bool
+serd_model_ask(const SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE s,
+ const SerdNode* SERD_NULLABLE p,
+ const SerdNode* SERD_NULLABLE o,
+ const SerdNode* SERD_NULLABLE g);
+
+/// Return the number of matching statements
+SERD_API
+size_t
+serd_model_count(const SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE s,
+ const SerdNode* SERD_NULLABLE p,
+ const SerdNode* SERD_NULLABLE o,
+ const SerdNode* SERD_NULLABLE g);
+
+/**
+ Add a statement to a model from nodes.
+
+ This function fails if there are any active iterators on `model`.
+*/
+SERD_API
+SerdStatus
+serd_model_add(SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NONNULL s,
+ const SerdNode* SERD_NONNULL p,
+ const SerdNode* SERD_NONNULL o,
+ const SerdNode* SERD_NULLABLE g);
+
+/**
+ Add a statement to a model from nodes with a caret
+
+ This function fails if there are any active iterators on `model`.
+*/
+SERD_API
+SerdStatus
+serd_model_add_with_caret(SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NONNULL s,
+ const SerdNode* SERD_NONNULL p,
+ const SerdNode* SERD_NONNULL o,
+ const SerdNode* SERD_NULLABLE g,
+ const SerdCaret* SERD_NULLABLE caret);
+
+/**
+ Add a statement to a model.
+
+ This function fails if there are any active iterators on `model`.
+ If statement is null, then SERD_FAILURE is returned.
+*/
+SERD_API
+SerdStatus
+serd_model_insert(SerdModel* SERD_NONNULL model,
+ const SerdStatement* SERD_NONNULL statement);
+
+/**
+ Add a range of statements to a model.
+
+ This function fails if there are any active iterators on `model`.
+*/
+SERD_API
+SerdStatus
+serd_model_insert_statements(SerdModel* SERD_NONNULL model,
+ SerdCursor* SERD_NONNULL range);
+
+/**
+ Remove a statement from a model via an iterator.
+
+ Calling this function invalidates all other iterators on this model.
+
+ @param model The model which `iter` points to.
+
+ @param cursor Cursor pointing to the element to erase. This cursor is
+ advanced to the next statement on return.
+*/
+SERD_API
+SerdStatus
+serd_model_erase(SerdModel* SERD_NONNULL model,
+ SerdCursor* SERD_NONNULL cursor);
+
+/**
+ Remove a range of statements from a model.
+
+ This can be used with serd_model_find() to erase all statements in a model
+ that match a pattern.
+
+ Calling this function invalidates all iterators on `model`.
+
+ @param model The model which `range` points to.
+
+ @param range Range to erase, which will be empty on return.
+*/
+SERD_API
+SerdStatus
+serd_model_erase_statements(SerdModel* SERD_NONNULL model,
+ SerdCursor* SERD_NONNULL range);
+
+/**
+ Remove everything from a model.
+
+ Calling this function invalidates all iterators on `model`.
+
+ @param model The model to clear.
+*/
+SERD_API
+SerdStatus
+serd_model_clear(SerdModel* SERD_NONNULL model);
+
+/**
+ @}
+ @defgroup serd_inserter Inserter
+ @{
+*/
+
+/// Create an inserter for writing statements to a model
+SERD_API
+SerdSink* SERD_ALLOCATED
+serd_inserter_new(SerdModel* SERD_NONNULL model,
+ const SerdNode* SERD_NULLABLE default_graph);
+
+/**
+ @}
@}
*/
diff --git a/meson.build b/meson.build
index 6711132e..5197f448 100644
--- a/meson.build
+++ b/meson.build
@@ -41,6 +41,7 @@ if get_option('strict')
'-Wno-format-nonliteral',
'-Wno-inline',
'-Wno-padded',
+ '-Wno-strict-overflow',
'-Wno-switch-default',
'-Wno-unsuffixed-float-constants',
'-Wno-unused-const-variable',
@@ -86,8 +87,13 @@ sources = [
'src/byte_sink.c',
'src/byte_source.c',
'src/caret.c',
+ 'src/compare.c',
+ 'src/cursor.c',
+ 'src/describe.c',
'src/env.c',
+ 'src/inserter.c',
'src/log.c',
+ 'src/model.c',
'src/n3.c',
'src/node.c',
'src/node_syntax.c',
@@ -105,6 +111,7 @@ sources = [
'src/uri.c',
'src/world.c',
'src/writer.c',
+ 'src/zix/btree.c',
'src/zix/digest.c',
'src/zix/hash.c',
]
diff --git a/src/.clang-tidy b/src/.clang-tidy
index a9e25a2f..6029eeaa 100644
--- a/src/.clang-tidy
+++ b/src/.clang-tidy
@@ -17,6 +17,7 @@ Checks: >
-llvmlibc-*,
-misc-no-recursion,
-readability-function-cognitive-complexity,
+ -readability-suspicious-call-argument,
WarningsAsErrors: '*'
HeaderFilterRegex: '.*'
FormatStyle: file
diff --git a/src/compare.c b/src/compare.c
new file mode 100644
index 00000000..82ff998f
--- /dev/null
+++ b/src/compare.c
@@ -0,0 +1,158 @@
+/*
+ Copyright 2011-2021 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "compare.h"
+
+#include "statement.h"
+
+#include "serd/serd.h"
+
+#include <assert.h>
+
+/// Compare a mandatory node with a node pattern
+static inline int
+serd_node_wildcard_compare(const SerdNode* SERD_NONNULL a,
+ const SerdNode* SERD_NULLABLE b)
+{
+ assert(a);
+ return b ? serd_node_compare(a, b) : 0;
+}
+
+/// Compare an optional graph node with a node pattern
+static inline int
+serd_node_graph_compare(const SerdNode* SERD_NULLABLE a,
+ const SerdNode* SERD_NULLABLE b)
+{
+ if (a == b) {
+ return 0;
+ }
+
+ if (!a) {
+ return -1;
+ }
+
+ if (!b) {
+ return 1;
+ }
+
+ return serd_node_compare(a, b);
+}
+
+/// Compare statements lexicographically, ignoring graph
+int
+serd_triple_compare(const void* const x,
+ const void* const y,
+ const void* const user_data)
+{
+ const int* const ordering = (const int*)user_data;
+ const SerdStatement* const s = (const SerdStatement*)x;
+ const SerdStatement* const t = (const SerdStatement*)y;
+
+ for (unsigned i = 0u; i < 3u; ++i) {
+ const int o = ordering[i];
+ assert(o < 3);
+
+ const int c = serd_node_compare(s->nodes[o], t->nodes[o]);
+ if (c) {
+ return c;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ Compare statments with statement patterns lexicographically, ignoring graph.
+
+ Null nodes in the second argument are treated as wildcards, always less than
+ any node.
+*/
+int
+serd_triple_compare_pattern(const void* const x,
+ const void* const y,
+ const void* const user_data)
+{
+ const int* const ordering = (const int*)user_data;
+ const SerdStatement* const s = (const SerdStatement*)x;
+ const SerdStatement* const t = (const SerdStatement*)y;
+
+ for (unsigned i = 0u; i < 3u; ++i) {
+ const int o = ordering[i];
+ assert(o < 3);
+
+ const int c = serd_node_wildcard_compare(s->nodes[o], t->nodes[o]);
+ if (c) {
+ return c;
+ }
+ }
+
+ return 0;
+}
+
+/// Compare statements lexicographically
+int
+serd_quad_compare(const void* const x,
+ const void* const y,
+ const void* const user_data)
+{
+ const int* const ordering = (const int*)user_data;
+ const SerdStatement* const s = (const SerdStatement*)x;
+ const SerdStatement* const t = (const SerdStatement*)y;
+
+ for (unsigned i = 0u; i < 4u; ++i) {
+ const int o = ordering[i];
+ const int c =
+ (o == SERD_GRAPH)
+ ? serd_node_graph_compare(s->nodes[SERD_GRAPH], t->nodes[SERD_GRAPH])
+ : serd_node_compare(s->nodes[o], t->nodes[o]);
+
+ if (c) {
+ return c;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ Compare statments with statement patterns lexicographically.
+
+ Null nodes in the second argument are treated as wildcards, always less than
+ any node.
+*/
+int
+serd_quad_compare_pattern(const void* const x,
+ const void* const y,
+ const void* const user_data)
+{
+ const int* const ordering = (const int*)user_data;
+ const SerdStatement* const s = (const SerdStatement*)x;
+ const SerdStatement* const t = (const SerdStatement*)y;
+
+ for (unsigned i = 0u; i < 4u; ++i) {
+ const int o = ordering[i];
+ const int c =
+ (o == SERD_GRAPH)
+ ? serd_node_graph_compare(s->nodes[SERD_GRAPH], t->nodes[SERD_GRAPH])
+ : serd_node_wildcard_compare(s->nodes[o], t->nodes[o]);
+
+ if (c) {
+ return c;
+ }
+ }
+
+ return 0;
+}
diff --git a/src/compare.h b/src/compare.h
new file mode 100644
index 00000000..eabbf43e
--- /dev/null
+++ b/src/compare.h
@@ -0,0 +1,54 @@
+/*
+ Copyright 2011-2021 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef SERD_COMPARE_H
+#define SERD_COMPARE_H
+
+#include "serd/serd.h"
+
+/// Compare statements lexicographically, ignoring graph
+SERD_PURE_FUNC
+int
+serd_triple_compare(const void* x, const void* y, const void* user_data);
+
+/**
+ Compare statments with statement patterns lexicographically, ignoring graph.
+
+ Null nodes in the second argument are treated as wildcards, always less than
+ any node.
+*/
+SERD_PURE_FUNC
+int
+serd_triple_compare_pattern(const void* x,
+ const void* y,
+ const void* user_data);
+
+/// Compare statements lexicographically
+SERD_PURE_FUNC
+int
+serd_quad_compare(const void* x, const void* y, const void* user_data);
+
+/**
+ Compare statments with statement patterns lexicographically.
+
+ Null nodes in the second argument are treated as wildcards, always less than
+ any node.
+*/
+SERD_PURE_FUNC
+int
+serd_quad_compare_pattern(const void* x, const void* y, const void* user_data);
+
+#endif // SERD_COMPARE_H
diff --git a/src/cursor.c b/src/cursor.c
new file mode 100644
index 00000000..d57da866
--- /dev/null
+++ b/src/cursor.c
@@ -0,0 +1,224 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "cursor.h"
+
+#include "model.h"
+#include "node.h"
+
+#include "serd/serd.h"
+#include "zix/btree.h"
+#include "zix/common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+static inline bool
+statement_matches_quad(const SerdStatement* const statement,
+ const SerdQuad quad)
+{
+ return serd_statement_matches(statement, quad[0], quad[1], quad[2], quad[3]);
+}
+
+SERD_PURE_FUNC
+bool
+serd_iter_in_range(const ZixBTreeIter iter,
+ const SerdQuad pattern,
+ const ScanStrategy strategy)
+{
+ const SerdStatement* const statement =
+ (const SerdStatement*)zix_btree_get(iter);
+
+ for (unsigned i = 0u; i < strategy.n_prefix; ++i) {
+ const unsigned field = orderings[strategy.order][i];
+ if (!serd_node_pattern_match(statement->nodes[field], pattern[field])) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool
+serd_cursor_in_range(const SerdCursor* const cursor)
+{
+ return (cursor->strategy.mode == FILTER_EVERYTHING ||
+ serd_iter_in_range(cursor->iter, cursor->pattern, cursor->strategy));
+}
+
+/// Seek forward as necessary until the cursor points to a matching statement
+static SerdStatus
+serd_cursor_seek_match(SerdCursor* const cursor)
+{
+ assert(cursor->strategy.mode == FILTER_EVERYTHING ||
+ cursor->strategy.mode == FILTER_RANGE);
+
+ for (; !zix_btree_iter_is_end(cursor->iter);
+ zix_btree_iter_increment(&cursor->iter)) {
+ if (!serd_cursor_in_range(cursor)) {
+ // Went past the end of the matching range, reset to end
+ cursor->iter = zix_btree_end_iter;
+ return SERD_FAILURE;
+ }
+
+ const SerdStatement* s = (const SerdStatement*)zix_btree_get(cursor->iter);
+ if (statement_matches_quad(s, cursor->pattern)) {
+ break; // Found matching statement
+ }
+ }
+
+ return SERD_SUCCESS;
+}
+
+static bool
+check_version(const SerdCursor* const cursor)
+{
+ if (cursor->version != cursor->model->version) {
+ serd_logf(cursor->model->world,
+ SERD_LOG_LEVEL_ERROR,
+ "attempt to use invalidated cursor");
+ return false;
+ }
+
+ return true;
+}
+
+SerdCursor
+serd_cursor_make(const SerdModel* const model,
+ const ZixBTreeIter iter,
+ const SerdQuad pattern,
+ const ScanStrategy strategy)
+{
+ SerdCursor cursor = {model,
+ {pattern[0], pattern[1], pattern[2], pattern[3]},
+ model->version,
+ iter,
+ strategy};
+
+ if (strategy.mode == FILTER_RANGE || strategy.mode == FILTER_EVERYTHING) {
+ serd_cursor_seek_match(&cursor);
+ }
+
+#ifndef NDEBUG
+ if (!zix_btree_iter_is_end(cursor.iter)) {
+ // Check that the cursor is at a matching statement
+ const SerdStatement* first =
+ (const SerdStatement*)zix_btree_get(cursor.iter);
+ assert(statement_matches_quad(first, pattern));
+
+ // Check that any nodes in the pattern are interned
+ for (unsigned i = 0u; i < 3; ++i) {
+ assert(!cursor.pattern[i] || cursor.pattern[i] == first->nodes[i]);
+ }
+ }
+#endif
+
+ return cursor;
+}
+
+SerdCursor*
+serd_cursor_copy(const SerdCursor* const cursor)
+{
+ if (!cursor) {
+ return NULL;
+ }
+
+ SerdCursor* const copy = (SerdCursor* const)malloc(sizeof(SerdCursor));
+ memcpy(copy, cursor, sizeof(SerdCursor));
+ return copy;
+}
+
+const SerdStatement*
+serd_cursor_get(const SerdCursor* const cursor)
+{
+ return ((!zix_btree_iter_is_end(cursor->iter) && check_version(cursor))
+ ? (const SerdStatement*)zix_btree_get(cursor->iter)
+ : NULL);
+}
+
+SerdStatus
+serd_cursor_scan_next(SerdCursor* const cursor)
+{
+ if (zix_btree_iter_is_end(cursor->iter)) {
+ return SERD_FAILURE;
+ }
+
+ switch (cursor->strategy.mode) {
+ case SCAN_EVERYTHING:
+ break;
+
+ case SCAN_RANGE:
+ if (!serd_cursor_in_range(cursor)) {
+ // Went past the end of the matching range
+ cursor->iter = zix_btree_end_iter;
+ return SERD_FAILURE;
+ }
+ break;
+
+ case FILTER_EVERYTHING:
+ case FILTER_RANGE:
+ // Seek forward to next match
+ return serd_cursor_seek_match(cursor);
+ }
+
+ return SERD_SUCCESS;
+}
+
+SerdStatus
+serd_cursor_advance(SerdCursor* const cursor)
+{
+ if (zix_btree_iter_is_end(cursor->iter) || !check_version(cursor)) {
+ return SERD_ERR_BAD_CURSOR;
+ }
+
+ const ZixStatus zst = zix_btree_iter_increment(&cursor->iter);
+ if (zst) {
+ assert(zst == ZIX_STATUS_REACHED_END);
+ return SERD_FAILURE;
+ }
+
+ return serd_cursor_scan_next(cursor);
+}
+
+bool
+serd_cursor_is_end(const SerdCursor* const cursor)
+{
+ return !cursor || zix_btree_iter_is_end(cursor->iter);
+}
+
+bool
+serd_cursor_equals(const SerdCursor* const lhs, const SerdCursor* const rhs)
+{
+ if (serd_cursor_is_end(lhs) || serd_cursor_is_end(rhs)) {
+ return serd_cursor_is_end(lhs) && serd_cursor_is_end(rhs);
+ }
+
+ /* We don't bother checking if the patterns match each other here, or if both
+ cursors have the same ordering, since both of these must be true if the
+ BTree iterators are equal. */
+
+ return (zix_btree_iter_equals(lhs->iter, rhs->iter) &&
+ lhs->strategy.mode == rhs->strategy.mode &&
+ lhs->strategy.n_prefix == rhs->strategy.n_prefix);
+}
+
+void
+serd_cursor_free(SerdCursor* const cursor)
+{
+ free(cursor);
+}
diff --git a/src/cursor.h b/src/cursor.h
new file mode 100644
index 00000000..0a786866
--- /dev/null
+++ b/src/cursor.h
@@ -0,0 +1,83 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef SERD_CURSOR_H
+#define SERD_CURSOR_H
+
+#include "statement.h"
+
+#include "serd/serd.h"
+#include "zix/btree.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#define N_STATEMENT_ORDERS 12u
+
+/// An iteration mode that determines what to skip and when to end
+typedef enum {
+ SCAN_EVERYTHING, ///< Iterate over entire store
+ SCAN_RANGE, ///< Iterate over range with equal prefix
+ FILTER_EVERYTHING, ///< Iterate to end of store, filtering
+ FILTER_RANGE, ///< Iterate over range with equal prefix, filtering
+} ScanMode;
+
+/// A strategy for searching and iterating over a statement index
+typedef struct {
+ ScanMode mode; ///< Iteration mode
+ unsigned n_prefix; ///< Number of prefix nodes that match the index
+ SerdStatementOrder order; ///< Order of index to scan
+} ScanStrategy;
+
+struct SerdCursorImpl {
+ const SerdModel* model; ///< Model being iterated over
+ const SerdNode* pattern[4]; ///< Search pattern (nodes in model or null)
+ size_t version; ///< Model version when iterator was created
+ ZixBTreeIter iter; ///< Current position in index
+ ScanStrategy strategy; ///< Index scanning strategy
+};
+
+/// Lookup table of ordered indices for each SerdStatementOrder
+static const unsigned orderings[N_STATEMENT_ORDERS][4] = {
+ {0u, 1u, 2u, 3u}, // SPOG
+ {0u, 2u, 1u, 3u}, // SOPG
+ {2u, 1u, 0u, 3u}, // OPSG
+ {2u, 0u, 1u, 3u}, // OPSG
+ {1u, 0u, 2u, 3u}, // PSOG
+ {1u, 2u, 0u, 3u}, // PSOG
+ {3u, 0u, 1u, 2u}, // GSPO
+ {3u, 0u, 2u, 1u}, // GSPO
+ {3u, 2u, 1u, 0u}, // GOPS
+ {3u, 2u, 0u, 1u}, // GOPS
+ {3u, 1u, 0u, 2u}, // GPSO
+ {3u, 1u, 2u, 0u} // GPSO
+};
+
+SerdCursor
+serd_cursor_make(const SerdModel* model,
+ ZixBTreeIter iter,
+ const SerdQuad pattern,
+ ScanStrategy strategy);
+
+SerdStatus
+serd_cursor_scan_next(SerdCursor* cursor);
+
+bool
+serd_iter_in_range(ZixBTreeIter iter,
+ const SerdQuad pattern,
+ ScanStrategy strategy);
+
+#endif // SERD_CURSOR_H
diff --git a/src/describe.c b/src/describe.c
new file mode 100644
index 00000000..5ddbf7d0
--- /dev/null
+++ b/src/describe.c
@@ -0,0 +1,266 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "cursor.h"
+#include "model.h"
+#include "world.h"
+
+// Define the types used in the hash interface for more type safety
+#define ZIX_HASH_KEY_TYPE const SerdNode
+#define ZIX_HASH_RECORD_TYPE const SerdNode
+
+#include "serd/serd.h"
+#include "zix/common.h"
+#include "zix/digest.h"
+#include "zix/hash.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+typedef enum { NAMED, ANON_S, ANON_O, LIST_S, LIST_O } NodeStyle;
+
+static SerdStatus
+write_range_statement(const SerdSink* sink,
+ const SerdModel* model,
+ ZixHash* list_subjects,
+ unsigned depth,
+ SerdStatementFlags flags,
+ const SerdStatement* statement);
+
+static NodeStyle
+get_node_style(const SerdModel* const model, const SerdNode* const node)
+{
+ if (serd_node_type(node) != SERD_BLANK) {
+ return NAMED; // Non-blank node can't be anonymous
+ }
+
+ const size_t n_as_object = serd_model_count(model, NULL, NULL, node, NULL);
+ if (n_as_object > 1) {
+ return NAMED; // Blank node referred to several times
+ }
+
+ if (serd_model_count(model, node, model->world->rdf_first, NULL, NULL) == 1 &&
+ serd_model_count(model, node, model->world->rdf_rest, NULL, NULL) == 1 &&
+ !serd_model_ask(model, NULL, model->world->rdf_rest, node, NULL)) {
+ return n_as_object == 0 ? LIST_S : LIST_O;
+ }
+
+ return n_as_object == 0 ? ANON_S : ANON_O;
+}
+
+static const SerdNode*
+identity(const SerdNode* const record)
+{
+ return record;
+}
+
+static ZixHashCode
+ptr_hash(const SerdNode* const ptr)
+{
+ return zix_digest(0u, &ptr, sizeof(SerdNode*));
+}
+
+static bool
+ptr_equals(const SerdNode* const a, const SerdNode* const b)
+{
+ return *(const void* const*)a == *(const void* const*)b;
+}
+
+static SerdStatus
+write_pretty_range(const SerdSink* const sink,
+ const unsigned depth,
+ const SerdModel* const model,
+ SerdCursor* const range)
+{
+ ZixHash* const list_subjects = zix_hash_new(identity, ptr_hash, ptr_equals);
+ SerdStatus st = SERD_SUCCESS;
+
+ while (!st && !serd_cursor_is_end(range)) {
+ const SerdStatement* const statement = serd_cursor_get(range);
+ assert(statement);
+
+ if (!(st = write_range_statement(
+ sink, model, list_subjects, depth, 0, statement))) {
+ st = serd_cursor_advance(range);
+ }
+ }
+
+ zix_hash_free(list_subjects);
+
+ return st > SERD_FAILURE ? st : SERD_SUCCESS;
+}
+
+static SerdStatus
+write_list(const SerdSink* const sink,
+ const SerdModel* const model,
+ ZixHash* const list_subjects,
+ const unsigned depth,
+ SerdStatementFlags flags,
+ const SerdNode* object,
+ const SerdNode* const graph)
+{
+ const SerdWorld* const world = model->world;
+ const SerdNode* const rdf_first = world->rdf_first;
+ const SerdNode* const rdf_rest = world->rdf_rest;
+ const SerdNode* const rdf_nil = world->rdf_nil;
+ SerdStatus st = SERD_SUCCESS;
+
+ const SerdStatement* fs =
+ serd_model_get_statement(model, object, rdf_first, NULL, graph);
+
+ assert(fs); // Shouldn't get here if it doesn't at least have an rdf:first
+
+ while (!st && !serd_node_equals(object, rdf_nil)) {
+ // Write rdf:first statement for this node
+ if ((st = write_range_statement(
+ sink, model, list_subjects, depth, flags, fs))) {
+ return st;
+ }
+
+ // Get rdf:rest statement
+ const SerdStatement* const rs =
+ serd_model_get_statement(model, object, rdf_rest, NULL, graph);
+
+ if (!rs) {
+ // Terminate malformed list with missing rdf:rest
+ return serd_sink_write(sink, 0, object, rdf_rest, rdf_nil, graph);
+ }
+
+ // Terminate if the next node has no rdf:first
+ const SerdNode* const next = serd_statement_object(rs);
+ if (!(fs = serd_model_get_statement(model, next, rdf_first, NULL, graph))) {
+ return serd_sink_write(sink, 0, object, rdf_rest, rdf_nil, graph);
+ }
+
+ // Write rdf:next statement and move to the next node
+ st = serd_sink_write_statement(sink, 0, rs);
+ object = next;
+ flags = 0u;
+ }
+
+ return st;
+}
+
+static bool
+skip_range_statement(const SerdModel* const model,
+ const SerdStatement* const statement)
+{
+ const SerdNode* const subject = serd_statement_subject(statement);
+ const NodeStyle subject_style = get_node_style(model, subject);
+ const SerdNode* const predicate = serd_statement_predicate(statement);
+
+ if (subject_style == ANON_O || subject_style == LIST_O) {
+ return true; // Skip subject that will be inlined elsewhere
+ }
+
+ if (subject_style == LIST_S &&
+ (serd_node_equals(predicate, model->world->rdf_first) ||
+ serd_node_equals(predicate, model->world->rdf_rest))) {
+ return true; // Skip list statement that write_list will handle
+ }
+
+ return false;
+}
+
+static SerdStatus
+write_range_statement(const SerdSink* const sink,
+ const SerdModel* const model,
+ ZixHash* const list_subjects,
+ const unsigned depth,
+ SerdStatementFlags flags,
+ const SerdStatement* SERD_NONNULL statement)
+{
+ const SerdNode* const subject = serd_statement_subject(statement);
+ const NodeStyle subject_style = get_node_style(model, subject);
+ const SerdNode* const object = serd_statement_object(statement);
+ const NodeStyle object_style = get_node_style(model, object);
+ const SerdNode* const graph = serd_statement_graph(statement);
+ SerdStatus st = SERD_SUCCESS;
+
+ if (subject_style == ANON_S) { // Write anonymous subject like "[] p o"
+ flags |= SERD_EMPTY_S;
+ }
+
+ if (depth == 0u) {
+ if (skip_range_statement(model, statement)) {
+ return SERD_SUCCESS; // Skip subject that will be inlined elsewhere
+ }
+
+ if (subject_style == LIST_S) {
+ // First write inline list subject, which this statement will follow
+ if (zix_hash_insert(list_subjects, subject) != ZIX_STATUS_EXISTS) {
+ st = write_list(
+ sink, model, list_subjects, 2, SERD_LIST_S, subject, graph);
+ }
+ }
+ }
+
+ if (st) {
+ return st;
+ }
+
+ if (object_style == ANON_O) { // Write anonymous object like "[ ... ]"
+ SerdCursor* const iter = serd_model_find(model, object, NULL, NULL, NULL);
+
+ flags |= SERD_ANON_O;
+ if (!(st = serd_sink_write_statement(sink, flags, statement))) {
+ if (!(st = write_pretty_range(sink, depth + 1, model, iter))) {
+ st = serd_sink_write_end(sink, object);
+ }
+ }
+
+ serd_cursor_free(iter);
+
+ } else if (object_style == LIST_O) { // Write list object like "( ... )"
+ flags |= SERD_LIST_O;
+ if (!(st = serd_sink_write_statement(sink, flags, statement))) {
+ st = write_list(sink, model, list_subjects, depth + 1, 0, object, graph);
+ }
+
+ } else {
+ st = serd_sink_write_statement(sink, flags, statement);
+ }
+
+ return st;
+}
+
+SerdStatus
+serd_describe_range(const SerdCursor* const range,
+ const SerdSink* sink,
+ const SerdDescribeFlags flags)
+{
+ SerdStatus st = SERD_SUCCESS;
+
+ if (serd_cursor_is_end(range)) {
+ return st;
+ }
+
+ SerdCursor copy = *range;
+
+ if (flags & SERD_NO_INLINE_OBJECTS) {
+ const SerdStatement* statement = NULL;
+ while (!st && (statement = serd_cursor_get(&copy))) {
+ if (!(st = serd_sink_write_statement(sink, 0, statement))) {
+ st = serd_cursor_advance(&copy);
+ }
+ }
+ } else {
+ st = write_pretty_range(sink, 0, range->model, &copy);
+ }
+
+ return st;
+}
diff --git a/src/inserter.c b/src/inserter.c
new file mode 100644
index 00000000..f5fd6ef1
--- /dev/null
+++ b/src/inserter.c
@@ -0,0 +1,122 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "model.h"
+#include "statement.h"
+
+#include "serd/serd.h"
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+typedef struct {
+ SerdModel* model;
+ const SerdNode* default_graph;
+} SerdInserterData;
+
+static bool
+can_insert(SerdWorld* const world, const SerdNode* const node)
+{
+ if (node) {
+ switch (serd_node_type(node)) {
+ case SERD_LITERAL:
+ return can_insert(world, serd_node_datatype(node));
+
+ case SERD_URI:
+ if (!serd_uri_string_has_scheme(serd_node_string(node))) {
+ serd_logf(world,
+ SERD_LOG_LEVEL_ERROR,
+ "attempt to insert relative URI <%s> into model",
+ serd_node_string(node));
+ return false;
+ }
+ break;
+
+ case SERD_BLANK:
+ case SERD_VARIABLE:
+ break;
+ }
+ }
+
+ return true;
+}
+
+static SerdStatus
+serd_inserter_on_statement(SerdInserterData* const data,
+ const SerdStatementFlags flags,
+ const SerdStatement* const statement)
+{
+ (void)flags;
+
+ SerdModel* const model = data->model;
+ SerdWorld* const world = model->world;
+
+ // Check that every node is expanded so it is context-free
+ for (unsigned i = 0; i < 4; ++i) {
+ if (!can_insert(world, serd_statement_node(statement, (SerdField)i))) {
+ return SERD_ERR_BAD_ARG;
+ }
+ }
+
+ const SerdNode* const s =
+ serd_nodes_intern(model->nodes, serd_statement_subject(statement));
+
+ const SerdNode* const p =
+ serd_nodes_intern(model->nodes, serd_statement_predicate(statement));
+
+ const SerdNode* const o =
+ serd_nodes_intern(model->nodes, serd_statement_object(statement));
+
+ const SerdNode* const g = serd_nodes_intern(
+ model->nodes,
+ serd_statement_graph(statement) ? serd_statement_graph(statement)
+ : data->default_graph);
+
+ const SerdCaret* const caret =
+ (data->model->flags & SERD_STORE_CARETS) ? statement->caret : NULL;
+
+ const SerdStatus st =
+ serd_model_add_with_caret(data->model, s, p, o, g, caret);
+
+ return st > SERD_FAILURE ? st : SERD_SUCCESS;
+}
+
+static SerdStatus
+serd_inserter_on_event(SerdInserterData* const data,
+ const SerdEvent* const event)
+{
+ if (event->type == SERD_STATEMENT) {
+ return serd_inserter_on_statement(
+ data, event->statement.flags, event->statement.statement);
+ }
+
+ return SERD_SUCCESS;
+}
+
+SerdSink*
+serd_inserter_new(SerdModel* const model, const SerdNode* const default_graph)
+{
+ SerdInserterData* const data =
+ (SerdInserterData*)calloc(1, sizeof(SerdInserterData));
+
+ data->model = model;
+ data->default_graph = serd_node_copy(default_graph);
+
+ SerdSink* const sink =
+ serd_sink_new(data, (SerdEventFunc)serd_inserter_on_event, free);
+
+ return sink;
+}
diff --git a/src/model.c b/src/model.c
new file mode 100644
index 00000000..0485b509
--- /dev/null
+++ b/src/model.c
@@ -0,0 +1,728 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "model.h"
+
+#include "caret.h"
+#include "compare.h"
+#include "cursor.h"
+#include "statement.h"
+
+#include "zix/btree.h"
+#include "zix/common.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+static const SerdQuad everything_pattern = {0, 0, 0, 0};
+
+/// A 3-bit signature for a triple pattern used as a table index
+typedef enum {
+ SERD_SIGNATURE_XXX, // 000 (???)
+ SERD_SIGNATURE_XXO, // 001 (??O)
+ SERD_SIGNATURE_XPX, // 010 (?P?)
+ SERD_SIGNATURE_XPO, // 011 (?PO)
+ SERD_SIGNATURE_SXX, // 100 (S??)
+ SERD_SIGNATURE_SXO, // 101 (S?O)
+ SERD_SIGNATURE_SPX, // 110 (SP?)
+ SERD_SIGNATURE_SPO, // 111 (SPO)
+} SerdPatternSignature;
+
+static ZixComparator
+serd_model_index_comparator(const SerdModel* const model,
+ const SerdStatementOrder order)
+{
+ return (order < SERD_ORDER_GSPO && !(model->flags & SERD_STORE_GRAPHS))
+ ? serd_triple_compare
+ : serd_quad_compare;
+}
+
+static ZixComparator
+serd_model_pattern_comparator(const SerdModel* const model,
+ const SerdStatementOrder order)
+{
+ return (order < SERD_ORDER_GSPO && !(model->flags & SERD_STORE_GRAPHS))
+ ? serd_triple_compare_pattern
+ : serd_quad_compare_pattern;
+}
+
+SerdStatus
+serd_model_add_index(SerdModel* const model, const SerdStatementOrder order)
+{
+ if (model->indices[order]) {
+ return SERD_FAILURE;
+ }
+
+ const unsigned* const ordering = orderings[order];
+ const ZixComparator comparator = serd_model_index_comparator(model, order);
+
+ model->indices[order] = zix_btree_new(comparator, ordering);
+
+ ZixStatus zst = model->indices[order] ? ZIX_STATUS_SUCCESS : ZIX_STATUS_ERROR;
+
+ // Insert statements from the default index
+ if (order != model->default_order) {
+ ZixBTree* const default_index = model->indices[model->default_order];
+ for (ZixBTreeIter i = zix_btree_begin(default_index);
+ !zst && !zix_btree_iter_is_end(i);
+ zix_btree_iter_increment(&i)) {
+ zst = zix_btree_insert(model->indices[order], zix_btree_get(i));
+ }
+ }
+
+ return zst ? serd_model_drop_index(model, order) : SERD_SUCCESS;
+}
+
+SerdStatus
+serd_model_drop_index(SerdModel* const model, const SerdStatementOrder order)
+{
+ if (!model->indices[order]) {
+ return SERD_FAILURE;
+ }
+
+ if (order == model->default_order) {
+ return SERD_ERR_BAD_CALL;
+ }
+
+ zix_btree_free(model->indices[order], NULL);
+ model->indices[order] = NULL;
+ return SERD_SUCCESS;
+}
+
+SerdModel*
+serd_model_new(SerdWorld* const world,
+ const SerdStatementOrder default_order,
+ const SerdModelFlags flags)
+{
+ SerdModel* model = (SerdModel*)calloc(1, sizeof(struct SerdModelImpl));
+
+ model->world = world;
+ model->nodes = serd_nodes_new();
+ model->default_order = default_order;
+ model->flags = flags;
+
+ serd_model_add_index(model, default_order);
+
+ const ScanStrategy end_strategy = {SCAN_EVERYTHING, 0u, default_order};
+
+ model->end = serd_cursor_make(model,
+ zix_btree_end(model->indices[default_order]),
+ everything_pattern,
+ end_strategy);
+
+ return model;
+}
+
+SerdModel*
+serd_model_copy(const SerdModel* const model)
+{
+ SerdModel* copy =
+ serd_model_new(model->world, model->default_order, model->flags);
+
+ SerdCursor* cursor = serd_model_begin(model);
+ serd_model_insert_statements(copy, cursor);
+ serd_cursor_free(cursor);
+
+ assert(serd_model_size(model) == serd_model_size(copy));
+ assert(serd_nodes_size(model->nodes) == serd_nodes_size(copy->nodes));
+ return copy;
+}
+
+static void
+log_bad_index(const SerdModel* const model,
+ const char* const description,
+ const SerdStatementOrder index_order,
+ const bool s,
+ const bool p,
+ const bool o,
+ const bool g)
+{
+ static const char* const order_strings[] = {
+ "S P O G",
+ "S O P G",
+ "O P S G",
+ "O S P G",
+ "P S O G",
+ "P O S G",
+ "G S P O",
+ "G S O P",
+ "G O P S",
+ "G O S P",
+ "G P S O",
+ "G P O S",
+ };
+
+ serd_logf(model->world,
+ SERD_LOG_LEVEL_WARNING,
+ "%s index (%s) for (%s %s %s%s) query",
+ description,
+ order_strings[index_order],
+ s ? "S" : "?",
+ p ? "P" : "?",
+ o ? "O" : "?",
+ (model->flags & SERD_STORE_GRAPHS) ? g ? " G" : " ?" : "");
+}
+
+static SerdCursor
+make_begin_cursor(const SerdModel* const model, const SerdStatementOrder order)
+{
+ if (!model->indices[order]) {
+ log_bad_index(model, "missing", order, false, false, false, false);
+ return model->end;
+ }
+
+ const ScanStrategy strategy = {SCAN_EVERYTHING, 0u, order};
+
+ return serd_cursor_make(model,
+ zix_btree_begin(model->indices[order]),
+ everything_pattern,
+ strategy);
+}
+
+bool
+serd_model_equals(const SerdModel* const a, const SerdModel* const b)
+{
+ if (!a && !b) {
+ return true;
+ }
+
+ if (!a || !b || serd_model_size(a) != serd_model_size(b)) {
+ return false;
+ }
+
+ SerdCursor ia = make_begin_cursor(a, a->default_order);
+ SerdCursor ib = make_begin_cursor(b, b->default_order);
+
+ while (!serd_cursor_is_end(&ia) && !serd_cursor_is_end(&ib)) {
+ if (!serd_statement_equals(serd_cursor_get(&ia), serd_cursor_get(&ib)) ||
+ serd_cursor_advance(&ia) > SERD_FAILURE ||
+ serd_cursor_advance(&ib) > SERD_FAILURE) {
+ return false;
+ }
+ }
+
+ return serd_cursor_is_end(&ia) && serd_cursor_is_end(&ib);
+}
+
+static void
+serd_model_drop_statement(SerdModel* const model,
+ SerdStatement* const statement)
+{
+ assert(statement);
+
+ for (unsigned i = 0u; i < 4; ++i) {
+ if (statement->nodes[i]) {
+ serd_nodes_deref(model->nodes, statement->nodes[i]);
+ }
+ }
+
+ if (statement->caret && statement->caret->file) {
+ serd_nodes_deref(model->nodes, statement->caret->file);
+ }
+
+ serd_statement_free(statement);
+}
+
+void
+serd_model_free(SerdModel* const model)
+{
+ if (!model) {
+ return;
+ }
+
+ // Free all statements (which are owned by the default index)
+ ZixBTree* const default_index = model->indices[model->default_order];
+ zix_btree_clear(default_index, (ZixDestroyFunc)serd_statement_free);
+
+ // Free indices themselves
+ for (unsigned i = 0u; i < N_STATEMENT_ORDERS; ++i) {
+ zix_btree_free(model->indices[i], NULL);
+ }
+
+ serd_nodes_free(model->nodes);
+ free(model);
+}
+
+SerdWorld*
+serd_model_world(SerdModel* const model)
+{
+ return model->world;
+}
+
+const SerdNodes*
+serd_model_nodes(const SerdModel* const model)
+{
+ return model->nodes;
+}
+
+SerdStatementOrder
+serd_model_default_order(const SerdModel* const model)
+{
+ return model->default_order;
+}
+
+SerdModelFlags
+serd_model_flags(const SerdModel* const model)
+{
+ return model->flags;
+}
+
+size_t
+serd_model_size(const SerdModel* const model)
+{
+ return zix_btree_size(model->indices[model->default_order]);
+}
+
+bool
+serd_model_empty(const SerdModel* const model)
+{
+ return serd_model_size(model) == 0;
+}
+
+SerdCursor*
+serd_model_begin_ordered(const SerdModel* const model,
+ const SerdStatementOrder order)
+{
+ const SerdCursor cursor = make_begin_cursor(model, order);
+
+ return serd_cursor_copy(&cursor);
+}
+
+SerdCursor*
+serd_model_begin(const SerdModel* const model)
+{
+ return serd_model_begin_ordered(model, model->default_order);
+}
+
+const SerdCursor*
+serd_model_end(const SerdModel* const model)
+{
+ return &model->end;
+}
+
+static SerdStatementOrder
+simple_order(const SerdStatementOrder order)
+{
+ return order < SERD_ORDER_GSPO ? order : (SerdStatementOrder)(order - 6u);
+}
+
+/// Return the best index scanning strategy for a pattern with given nodes
+static ScanStrategy
+serd_model_strategy(const SerdModel* const model,
+ const bool with_s,
+ const bool with_p,
+ const bool with_o,
+ const bool with_g)
+{
+#define N_STRATEGY_TIERS 4u
+
+ const SerdStatementOrder default_order = simple_order(model->default_order);
+ const ScanStrategy none = {SCAN_EVERYTHING, 0u, default_order};
+
+ const ScanStrategy strategies[N_STRATEGY_TIERS][8] = {
+ // Preferred perfect strategies: SPO, SOP, OPS, PSO
+ {
+ none,
+ {SCAN_RANGE, 1u, SERD_ORDER_OPS}, // ??O
+ {SCAN_RANGE, 1u, SERD_ORDER_PSO}, // ?P?
+ {SCAN_RANGE, 2u, SERD_ORDER_OPS}, // ?PO
+ {SCAN_RANGE, 1u, SERD_ORDER_SPO}, // S??
+ {SCAN_RANGE, 2u, SERD_ORDER_SOP}, // S?O
+ {SCAN_RANGE, 2u, SERD_ORDER_SPO}, // SP?
+ {SCAN_RANGE, 3u, default_order} // SPO
+ },
+
+ // Alternate perfect strategies: adds OSP and POS
+ {
+ none, // ???
+ {SCAN_RANGE, 1u, SERD_ORDER_OSP}, // ??O
+ {SCAN_RANGE, 1u, SERD_ORDER_POS}, // ?P?
+ {SCAN_RANGE, 2u, SERD_ORDER_POS}, // ?PO
+ {SCAN_RANGE, 1u, SERD_ORDER_SOP}, // S??
+ {SCAN_RANGE, 2u, SERD_ORDER_OSP}, // S?O
+ {SCAN_RANGE, 2u, SERD_ORDER_PSO}, // SP?
+ none // SPO
+ },
+
+ // Preferred partial prefix strategies
+ {
+ none, // ???
+ none, // ??O
+ none, // ?P?
+ {FILTER_RANGE, 1u, SERD_ORDER_PSO}, // ?PO
+ none, // S??
+ {FILTER_RANGE, 1u, SERD_ORDER_SPO}, // S?O
+ {FILTER_RANGE, 1u, SERD_ORDER_SOP}, // SP?
+ none // SPO
+ },
+
+ // Alternate partial prefix strategies
+ {
+ none, // ???
+ none, // ??O
+ none, // ?P?
+ {FILTER_RANGE, 1u, SERD_ORDER_OSP}, // ?PO
+ none, // S??
+ {FILTER_RANGE, 1u, SERD_ORDER_OPS}, // S?O
+ {FILTER_RANGE, 1u, SERD_ORDER_POS}, // SP?
+ none // SPO
+ },
+ };
+
+ // Construct a 3-bit signature for this triple pattern
+ const SerdPatternSignature sig =
+ (SerdPatternSignature)(((with_s ? 1u : 0u) << 2u) + //
+ ((with_p ? 1u : 0u) << 1u) + //
+ ((with_o ? 1u : 0u)));
+
+ if (!sig && !with_g) {
+ return none;
+ }
+
+ // Try to find a strategy we can support, from most to least preferred
+ for (unsigned t = 0u; t < N_STRATEGY_TIERS; ++t) {
+ ScanStrategy strategy = strategies[t][sig];
+ const SerdStatementOrder triple_order = strategy.order;
+
+ assert(strategy.order < SERD_ORDER_GSPO);
+
+ if (strategy.n_prefix > 0) {
+ if (with_g) {
+ const SerdStatementOrder quad_order =
+ (SerdStatementOrder)(triple_order + 6u);
+
+ if (model->indices[quad_order]) {
+ strategy.order = quad_order;
+ ++strategy.n_prefix;
+ return strategy;
+ }
+ }
+
+ if (model->indices[triple_order]) {
+ return strategy;
+ }
+ }
+ }
+
+ // Indices don't help with the triple, try to at least stay in the graph
+ if (with_g) {
+ for (unsigned i = SERD_ORDER_GSPO; i <= SERD_ORDER_GPOS; ++i) {
+ if (model->indices[i]) {
+ const ScanMode mode = sig == 0x000 ? SCAN_RANGE : FILTER_RANGE;
+ const ScanStrategy strategy = {mode, 1u, (SerdStatementOrder)i};
+
+ return strategy;
+ }
+ }
+ }
+
+ // All is lost, regress to linear search
+ const ScanStrategy linear = {FILTER_EVERYTHING, 0u, model->default_order};
+ return linear;
+}
+
+static SerdCursor
+serd_model_search(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ // Build a pattern of interned nodes
+ const SerdQuad pattern = {serd_nodes_get(model->nodes, s),
+ serd_nodes_get(model->nodes, p),
+ serd_nodes_get(model->nodes, o),
+ serd_nodes_get(model->nodes, g)};
+
+ // If some node isn't in the model at all, no need to search for statements
+ const int n_given = !!s + !!p + !!o + !!g;
+ if (n_given != (!!pattern[0] + !!pattern[1] + !!pattern[2] + !!pattern[3])) {
+ return model->end;
+ }
+
+ // Determine the best available search strategy
+ const ScanStrategy strategy = serd_model_strategy(model, s, p, o, g);
+ const SerdStatementOrder order = strategy.order;
+ ZixBTree* const index = model->indices[order];
+
+ // Issue any performance warnings, and return early for degenerate cases
+ switch (strategy.mode) {
+ case SCAN_EVERYTHING:
+ return make_begin_cursor(model, order);
+ case SCAN_RANGE:
+ break;
+ case FILTER_EVERYTHING:
+ log_bad_index(model, "using effectively linear", order, s, p, o, g);
+ return serd_cursor_make(model, zix_btree_begin(index), pattern, strategy);
+ case FILTER_RANGE:
+ log_bad_index(model, "filtering partial", order, s, p, o, g);
+ break;
+ }
+
+ // Find the first statement matching the pattern in the index
+ ZixBTreeIter iter = zix_btree_end_iter;
+ zix_btree_lower_bound(index,
+ serd_model_pattern_comparator(model, order),
+ orderings[order],
+ pattern,
+ &iter);
+
+ return (!zix_btree_iter_is_end(iter) &&
+ serd_iter_in_range(iter, pattern, strategy))
+ ? serd_cursor_make(model, iter, pattern, strategy)
+ : model->end;
+}
+
+SerdCursor*
+serd_model_find(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ const SerdCursor cursor = serd_model_search(model, s, p, o, g);
+
+ return zix_btree_iter_is_end(cursor.iter) ? NULL : serd_cursor_copy(&cursor);
+}
+
+const SerdNode*
+serd_model_get(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ const SerdStatement* const statement =
+ serd_model_get_statement(model, s, p, o, g);
+
+ return !statement ? NULL
+ : !s ? serd_statement_subject(statement)
+ : !p ? serd_statement_predicate(statement)
+ : !o ? serd_statement_object(statement)
+ : !g ? serd_statement_graph(statement)
+ : NULL;
+}
+
+const SerdStatement*
+serd_model_get_statement(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ if ((bool)s + (bool)p + (bool)o != 2 &&
+ (bool)s + (bool)p + (bool)o + (bool)g != 3) {
+ return NULL;
+ }
+
+ const SerdCursor i = serd_model_search(model, s, p, o, g);
+
+ return serd_cursor_get(&i);
+}
+
+size_t
+serd_model_count(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ SerdCursor i = serd_model_search(model, s, p, o, g);
+ size_t count = 0;
+
+ for (; !serd_cursor_is_end(&i); serd_cursor_advance(&i)) {
+ ++count;
+ }
+
+ return count;
+}
+
+bool
+serd_model_ask(const SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ const SerdCursor c = serd_model_search(model, s, p, o, g);
+
+ return !serd_cursor_is_end(&c);
+}
+
+static SerdCaret*
+serd_model_intern_caret(SerdModel* const model, const SerdCaret* const caret)
+{
+ if (caret) {
+ SerdCaret* copy = (SerdCaret*)calloc(1, sizeof(SerdCaret));
+
+ copy->file = serd_nodes_intern(model->nodes, caret->file);
+ copy->line = caret->line;
+ copy->col = caret->col;
+ return copy;
+ }
+
+ return NULL;
+}
+
+SerdStatus
+serd_model_add_with_caret(SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g,
+ const SerdCaret* const caret)
+{
+ SerdStatement* const statement = serd_statement_new(s, p, o, g, NULL);
+ if (!statement) {
+ return SERD_ERR_UNKNOWN;
+ }
+
+ statement->caret = serd_model_intern_caret(model, caret);
+
+ bool added = false;
+ for (unsigned i = 0u; i < N_STATEMENT_ORDERS; ++i) {
+ if (model->indices[i]) {
+ if (!zix_btree_insert(model->indices[i], statement)) {
+ added = true;
+ } else if ((SerdStatementOrder)i == model->default_order) {
+ break; // Statement already indexed
+ }
+ }
+ }
+
+ ++model->version;
+ if (added) {
+ return SERD_SUCCESS;
+ }
+
+ serd_model_drop_statement(model, statement);
+ return SERD_FAILURE;
+}
+
+SerdStatus
+serd_model_add(SerdModel* const model,
+ const SerdNode* const s,
+ const SerdNode* const p,
+ const SerdNode* const o,
+ const SerdNode* const g)
+{
+ return serd_model_add_with_caret(model,
+ serd_nodes_intern(model->nodes, s),
+ serd_nodes_intern(model->nodes, p),
+ serd_nodes_intern(model->nodes, o),
+ serd_nodes_intern(model->nodes, g),
+ NULL);
+}
+
+SerdStatus
+serd_model_insert(SerdModel* const model, const SerdStatement* const statement)
+{
+ SerdNodes* const nodes = model->nodes;
+
+ return serd_model_add_with_caret(
+ model,
+ serd_nodes_intern(nodes, serd_statement_subject(statement)),
+ serd_nodes_intern(nodes, serd_statement_predicate(statement)),
+ serd_nodes_intern(nodes, serd_statement_object(statement)),
+ serd_nodes_intern(nodes, serd_statement_graph(statement)),
+ serd_statement_caret(statement));
+}
+
+SerdStatus
+serd_model_insert_statements(SerdModel* const model, SerdCursor* const range)
+{
+ const SerdStatement* statement = serd_cursor_get(range);
+ SerdStatus st = SERD_SUCCESS;
+
+ while (!st && statement) {
+ if (!(st = serd_model_insert(model, statement))) {
+ st = serd_cursor_advance(range);
+ }
+
+ statement = serd_cursor_get(range);
+ }
+
+ return st;
+}
+
+SerdStatus
+serd_model_erase(SerdModel* const model, SerdCursor* const cursor)
+{
+ const SerdStatement* statement = serd_cursor_get(cursor);
+ SerdStatement* removed = NULL;
+ ZixStatus zst = ZIX_STATUS_SUCCESS;
+
+ if (!statement) {
+ return SERD_FAILURE;
+ }
+
+ // Erase from the index associated with this cursor
+ zst = zix_btree_remove(model->indices[cursor->strategy.order],
+ statement,
+ (void**)&removed,
+ &cursor->iter);
+
+ // No error should be possible with a valid cursor
+ assert(!zst);
+ assert(removed);
+ assert(removed == statement);
+
+ for (unsigned i = SERD_ORDER_SPO; i <= SERD_ORDER_GPOS; ++i) {
+ ZixBTree* index = model->indices[i];
+
+ if (index && i != (unsigned)cursor->strategy.order) {
+ SerdStatement* ignored = NULL;
+ ZixBTreeIter next = zix_btree_end_iter;
+ zst = zix_btree_remove(index, statement, (void**)&ignored, &next);
+
+ assert(zst == ZIX_STATUS_SUCCESS || zst == ZIX_STATUS_NOT_FOUND);
+ assert(!ignored || ignored == removed);
+ }
+ }
+ serd_cursor_scan_next(cursor);
+
+ serd_model_drop_statement(model, removed);
+ cursor->version = ++model->version;
+
+ (void)zst;
+ return SERD_SUCCESS;
+}
+
+SerdStatus
+serd_model_erase_statements(SerdModel* const model, SerdCursor* const range)
+{
+ SerdStatus st = SERD_SUCCESS;
+
+ while (!st && !serd_cursor_is_end(range)) {
+ st = serd_model_erase(model, range);
+ }
+
+ return st;
+}
+
+SerdStatus
+serd_model_clear(SerdModel* const model)
+{
+ SerdCursor i = make_begin_cursor(model, model->default_order);
+
+ while (!serd_cursor_is_end(&i)) {
+ serd_model_erase(model, &i);
+ }
+
+ return SERD_SUCCESS;
+}
diff --git a/src/model.h b/src/model.h
new file mode 100644
index 00000000..5fbf6209
--- /dev/null
+++ b/src/model.h
@@ -0,0 +1,37 @@
+/*
+ Copyright 2011-2020 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#ifndef SERD_MODEL_H
+#define SERD_MODEL_H
+
+#include "cursor.h"
+
+#include "serd/serd.h"
+#include "zix/btree.h"
+
+#include <stddef.h>
+
+struct SerdModelImpl {
+ SerdWorld* world; ///< World this model is a part of
+ SerdNodes* nodes; ///< Interned nodes in this model
+ ZixBTree* indices[12]; ///< Trees of SerdStatement pointers
+ SerdCursor end; ///< End cursor (always the same)
+ size_t version; ///< Version incremented on every change
+ SerdStatementOrder default_order; ///< Order for main statement-owning index
+ SerdModelFlags flags; ///< Active indices and features
+};
+
+#endif // SERD_MODEL_H
diff --git a/src/reader.c b/src/reader.c
index 5afc28ff..91e61f72 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -91,7 +91,7 @@ tolerate_status(const SerdReader* const reader, const SerdStatus status)
if (status == SERD_ERR_INTERNAL || status == SERD_ERR_OVERFLOW ||
status == SERD_ERR_BAD_WRITE || status == SERD_ERR_NO_DATA ||
- status == SERD_ERR_BAD_CALL) {
+ status == SERD_ERR_BAD_CALL || status == SERD_ERR_BAD_CURSOR) {
return false;
}
diff --git a/src/serdi.c b/src/serdi.c
index 2acae921..97601b83 100644
--- a/src/serdi.c
+++ b/src/serdi.c
@@ -61,11 +61,12 @@ print_usage(const char* const name, const bool error)
fprintf(os, " -b Fast bulk output for large serialisations.\n");
fprintf(os, " -c PREFIX Chop PREFIX from matching blank node IDs.\n");
fprintf(os, " -e Eat input one character at a time.\n");
- fprintf(os, " -f Keep full URIs in input (don't qualify).\n");
+ fprintf(os, " -f Fast and loose mode (possibly ugly output).\n");
fprintf(os, " -h Display this help and exit.\n");
fprintf(os, " -i SYNTAX Input syntax: turtle/ntriples/trig/nquads.\n");
fprintf(os, " -k BYTES Parser stack size.\n");
fprintf(os, " -l Lax (non-strict) parsing.\n");
+ fprintf(os, " -m Build a model in memory before writing.\n");
fprintf(os, " -o SYNTAX Output syntax: empty/turtle/ntriples/nquads.\n");
fprintf(os, " -p PREFIX Add PREFIX to blank node IDs.\n");
fprintf(os, " -q Suppress all output except data.\n");
@@ -149,7 +150,9 @@ main(int argc, char** argv)
SerdWriterFlags writer_flags = 0;
bool bulk_read = true;
bool bulk_write = false;
+ bool no_inline = false;
bool osyntax_set = false;
+ bool use_model = false;
bool quiet = false;
size_t stack_size = 4194304;
const char* input_string = NULL;
@@ -173,12 +176,15 @@ main(int argc, char** argv)
} else if (opt == 'e') {
bulk_read = false;
} else if (opt == 'f') {
+ no_inline = true;
writer_flags |= (SERD_WRITE_UNQUALIFIED | SERD_WRITE_UNRESOLVED);
} else if (opt == 'h') {
return print_usage(prog, false);
} else if (opt == 'l') {
reader_flags |= SERD_READ_LAX;
writer_flags |= SERD_WRITE_LAX;
+ } else if (argv[a][1] == 'm') {
+ use_model = true;
} else if (opt == 'q') {
quiet = true;
} else if (opt == 't') {
@@ -312,6 +318,9 @@ main(int argc, char** argv)
}
#endif
+ const SerdDescribeFlags describe_flags =
+ no_inline ? SERD_NO_INLINE_OBJECTS : 0u;
+
const size_t block_size = bulk_write ? 4096u : 1u;
SerdByteSink* const byte_sink =
out_filename
@@ -326,6 +335,30 @@ main(int argc, char** argv)
SerdWriter* const writer =
serd_writer_new(world, output_syntax, writer_flags, env, byte_sink);
+ SerdModel* model = NULL;
+ SerdSink* inserter = NULL;
+ const SerdSink* sink = NULL;
+ if (use_model) {
+ const SerdModelFlags flags = (input_has_graphs ? SERD_STORE_GRAPHS : 0u);
+
+ model = serd_model_new(world, SERD_ORDER_SPO, flags);
+ if (input_has_graphs) {
+ serd_model_add_index(model, SERD_ORDER_GSPO);
+ }
+
+ if (!no_inline) {
+ serd_model_add_index(model, SERD_ORDER_OPS);
+ if (input_has_graphs) {
+ serd_model_add_index(model, SERD_ORDER_GOPS);
+ }
+ }
+
+ inserter = serd_inserter_new(model, NULL);
+ sink = inserter;
+ } else {
+ sink = serd_writer_sink(writer);
+ }
+
if (quiet) {
serd_set_log_func(world, serd_quiet_log_func, NULL);
}
@@ -349,7 +382,7 @@ main(int argc, char** argv)
input_syntax ? input_syntax : SERD_TRIG,
reader_flags,
env,
- serd_writer_sink(writer),
+ sink,
stack_size);
serd_reader_add_blank_prefix(reader, add_prefix);
@@ -394,7 +427,7 @@ main(int argc, char** argv)
input_syntax,
reader_flags,
env,
- serd_writer_sink(writer),
+ sink,
stack_size,
inputs[i],
n_inputs > 1 ? prefix : add_prefix,
@@ -404,6 +437,26 @@ main(int argc, char** argv)
}
free(prefix);
+ if (st <= SERD_FAILURE && use_model) {
+ const SerdSink* writer_sink = serd_writer_sink(writer);
+ SerdCursor* everything = serd_model_begin_ordered(
+ model, input_has_graphs ? SERD_ORDER_GSPO : SERD_ORDER_SPO);
+
+ serd_env_write_prefixes(env, writer_sink);
+
+ st = serd_describe_range(
+ everything,
+ writer_sink,
+ describe_flags |
+ ((output_syntax == SERD_NTRIPLES || output_syntax == SERD_NQUADS)
+ ? SERD_NO_INLINE_OBJECTS
+ : 0u));
+
+ serd_cursor_free(everything);
+ }
+
+ serd_sink_free(inserter);
+ serd_model_free(model);
serd_writer_free(writer);
serd_node_free(input_name);
serd_env_free(env);
diff --git a/src/statement.c b/src/statement.c
index d6571c6c..7bb2486f 100644
--- a/src/statement.c
+++ b/src/statement.c
@@ -50,7 +50,13 @@ serd_statement_new(const SerdNode* const s,
const SerdNode* const g,
const SerdCaret* const caret)
{
- assert(serd_statement_is_valid(s, p, o, g));
+ assert(s);
+ assert(p);
+ assert(o);
+
+ if (!serd_statement_is_valid(s, p, o, g)) {
+ return NULL;
+ }
SerdStatement* statement = (SerdStatement*)malloc(sizeof(SerdStatement));
if (statement) {
diff --git a/src/string.c b/src/string.c
index 2d25fb80..11b53050 100644
--- a/src/string.c
+++ b/src/string.c
@@ -38,6 +38,8 @@ serd_strerror(const SerdStatus status)
return "Invalid syntax";
case SERD_ERR_BAD_ARG:
return "Invalid argument";
+ case SERD_ERR_BAD_CURSOR:
+ return "Invalid cursor";
case SERD_ERR_NOT_FOUND:
return "Not found";
case SERD_ERR_ID_CLASH:
@@ -58,6 +60,8 @@ serd_strerror(const SerdStatus status)
return "Invalid call";
case SERD_ERR_BAD_URI:
return "Invalid or unresolved URI";
+ case SERD_ERR_BAD_INDEX:
+ return "No optimal model index available";
}
return "Unknown error";
diff --git a/test/.clang-tidy b/test/.clang-tidy
index dd609218..d8601571 100644
--- a/test/.clang-tidy
+++ b/test/.clang-tidy
@@ -10,6 +10,7 @@ Checks: >
-clang-analyzer-nullability.NullabilityBase,
-clang-analyzer-nullability.NullableDereferenced,
-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,
+ -clang-analyzer-valist.Uninitialized,
-cppcoreguidelines-avoid-non-const-global-variables,
-hicpp-signed-bitwise,
-llvmlibc-*,
diff --git a/test/meson.build b/test/meson.build
index 77a9ba57..c4dc4b3b 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -8,9 +8,11 @@ unit_tests = [
'byte_sink',
'byte_source',
'caret',
+ 'cursor',
'env',
'free_null',
'log',
+ 'model',
'node',
'node_syntax',
'nodes',
diff --git a/test/run_test_suite.py b/test/run_test_suite.py
index f23f29e6..f9524a9c 100755
--- a/test/run_test_suite.py
+++ b/test/run_test_suite.py
@@ -230,6 +230,23 @@ def _file_equals(patha, pathb):
return _show_diff(fa.readlines(), fb.readlines(), patha, pathb)
+def _file_lines_equal(patha, pathb, subst_from="", subst_to=""):
+ import io
+
+ for path in (patha, pathb):
+ if not os.access(path, os.F_OK):
+ sys.stderr.write("error: missing file %s" % path)
+ return False
+
+ la = sorted(set(io.open(patha, encoding="utf-8").readlines()))
+ lb = sorted(set(io.open(pathb, encoding="utf-8").readlines()))
+ if la != lb:
+ _show_diff(la, lb, patha, pathb)
+ return False
+
+ return True
+
+
def test_suite(
manifest_path,
base_uri,
@@ -333,6 +350,31 @@ def test_suite(
command_prefix,
)
+ # Run model test for positive test (must succeed)
+ out_filename = os.path.join(
+ out_test_dir, test_name + ".model.out"
+ )
+
+ model_command = command_prefix + [
+ "-m",
+ "-a",
+ "-o",
+ osyntax,
+ "-w",
+ out_filename,
+ "-I",
+ test_uri,
+ test_path,
+ ]
+
+ proc = subprocess.run(model_command, check=True)
+
+ if proc.returncode == 0 and (
+ (mf + "result") in model[test]
+ ):
+ if not _file_lines_equal(check_path, out_filename):
+ results.n_failures += 1
+
else: # Negative test
with open(out_filename, "w") as stdout:
with tempfile.TemporaryFile() as stderr:
diff --git a/test/test_cursor.c b/test/test_cursor.c
new file mode 100644
index 00000000..cade0621
--- /dev/null
+++ b/test/test_cursor.c
@@ -0,0 +1,114 @@
+/*
+ Copyright 2011-2021 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#undef NDEBUG
+
+#include "serd/serd.h"
+
+#include <assert.h>
+#include <stddef.h>
+
+static void
+test_copy(void)
+{
+ assert(!serd_cursor_copy(NULL));
+
+ SerdWorld* const world = serd_world_new();
+ SerdModel* const model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdCursor* const begin = serd_model_begin(model);
+ SerdCursor* const copy = serd_cursor_copy(begin);
+
+ assert(serd_cursor_equals(copy, begin));
+
+ serd_cursor_free(copy);
+ serd_cursor_free(begin);
+ serd_model_free(model);
+ serd_world_free(world);
+}
+
+static void
+test_comparison(void)
+{
+ SerdWorld* const world = serd_world_new();
+ SerdNodes* const nodes = serd_world_nodes(world);
+ SerdModel* const model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ serd_model_add_index(model, SERD_ORDER_OPS);
+
+ const SerdNode* const a =
+ serd_nodes_uri(nodes, SERD_STRING("http://example.org/a"));
+ const SerdNode* const b =
+ serd_nodes_uri(nodes, SERD_STRING("http://example.org/b"));
+ const SerdNode* const c =
+ serd_nodes_uri(nodes, SERD_STRING("http://example.org/c"));
+
+ // Add a single statement
+ assert(!serd_model_add(model, a, b, c, NULL));
+
+ // Make cursors that point to the statement but via different patterns
+ SerdCursor* const c1 = serd_model_find(model, a, NULL, NULL, NULL);
+ SerdCursor* const c2 = serd_model_find(model, a, b, NULL, NULL);
+ SerdCursor* const c3 = serd_model_find(model, NULL, b, c, NULL);
+
+ // Ensure that they refer to the same statement but are not equal
+ assert(serd_cursor_get(c1) == serd_cursor_get(c2));
+ assert(serd_cursor_get(c2) == serd_cursor_get(c3));
+ assert(!serd_cursor_equals(c1, c2));
+ assert(!serd_cursor_equals(c2, c3));
+ assert(!serd_cursor_equals(c1, c3));
+
+ // Check that none are equal to begin (which has a different mode) or end
+ SerdCursor* const begin = serd_model_begin(model);
+ assert(!serd_cursor_equals(c1, begin));
+ assert(!serd_cursor_equals(c2, begin));
+ assert(!serd_cursor_equals(c3, begin));
+ assert(!serd_cursor_equals(c1, serd_model_end(model)));
+ assert(!serd_cursor_equals(c2, serd_model_end(model)));
+ assert(!serd_cursor_equals(c3, serd_model_end(model)));
+ serd_cursor_free(begin);
+
+ // Check that a cursor that points to it via the same pattern is equal
+ SerdCursor* const c4 = serd_model_find(model, a, b, NULL, NULL);
+ assert(serd_cursor_get(c4) == serd_cursor_get(c1));
+ assert(serd_cursor_equals(c4, c2));
+ assert(!serd_cursor_equals(c4, c3));
+ serd_cursor_free(c4);
+
+ // Advance everything to the end
+ assert(serd_cursor_advance(c1) == SERD_FAILURE);
+ assert(serd_cursor_advance(c2) == SERD_FAILURE);
+ assert(serd_cursor_advance(c3) == SERD_FAILURE);
+
+ // Check that they are now equal, and equal to the model's end
+ assert(serd_cursor_equals(c1, c2));
+ assert(serd_cursor_equals(c1, serd_model_end(model)));
+ assert(serd_cursor_equals(c2, serd_model_end(model)));
+
+ serd_cursor_free(c3);
+ serd_cursor_free(c2);
+ serd_cursor_free(c1);
+ serd_model_free(model);
+ serd_world_free(world);
+}
+
+int
+main(void)
+{
+ test_copy();
+ test_comparison();
+
+ return 0;
+}
diff --git a/test/test_free_null.c b/test/test_free_null.c
index 28f7563f..1fa87979 100644
--- a/test/test_free_null.c
+++ b/test/test_free_null.c
@@ -33,6 +33,9 @@ main(void)
serd_reader_free(NULL);
serd_writer_free(NULL);
serd_nodes_free(NULL);
+ serd_model_free(NULL);
+ serd_statement_free(NULL);
+ serd_cursor_free(NULL);
serd_caret_free(NULL);
return 0;
diff --git a/test/test_model.c b/test/test_model.c
new file mode 100644
index 00000000..4cedfb2b
--- /dev/null
+++ b/test/test_model.c
@@ -0,0 +1,1396 @@
+/*
+ Copyright 2011-2021 David Robillard <d@drobilla.net>
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#undef NDEBUG
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "serd/serd.h"
+
+#define WILDCARD_NODE NULL
+
+#define NS_RDF "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+#define RDF_FIRST NS_RDF "first"
+#define RDF_REST NS_RDF "rest"
+#define RDF_NIL NS_RDF "nil"
+
+#define N_OBJECTS_PER 2U
+
+typedef const SerdNode* Quad[4];
+
+typedef struct {
+ Quad query;
+ int expected_num_results;
+} QueryTest;
+
+static const SerdNode*
+uri(SerdWorld* world, const unsigned num)
+{
+ char str[] = "http://example.org/0000000000";
+
+ snprintf(str + 19, 11, "%010u", num);
+
+ return serd_nodes_uri(serd_world_nodes(world), SERD_STRING(str));
+}
+
+static int
+generate(SerdWorld* world,
+ SerdModel* model,
+ size_t n_quads,
+ const SerdNode* graph)
+{
+ SerdNodes* nodes = serd_world_nodes(world);
+ SerdStatus st = SERD_SUCCESS;
+
+ for (unsigned i = 0; i < n_quads; ++i) {
+ unsigned num = (i * N_OBJECTS_PER) + 1U;
+
+ const SerdNode* ids[2 + N_OBJECTS_PER];
+ for (unsigned j = 0; j < 2 + N_OBJECTS_PER; ++j) {
+ ids[j] = uri(world, num++);
+ }
+
+ for (unsigned j = 0; j < N_OBJECTS_PER; ++j) {
+ st = serd_model_add(model, ids[0], ids[1], ids[2 + j], graph);
+ assert(!st);
+ }
+ }
+
+ // Add some literals
+
+ // (98 4 "hello") and (98 4 "hello"^^<5>)
+ const SerdNode* hello = serd_nodes_string(nodes, SERD_STRING("hello"));
+
+ const SerdNode* hello_gb = serd_nodes_literal(
+ nodes, SERD_STRING("hello"), SERD_HAS_LANGUAGE, SERD_STRING("en-gb"));
+
+ const SerdNode* hello_us = serd_nodes_literal(
+ nodes, SERD_STRING("hello"), SERD_HAS_LANGUAGE, SERD_STRING("en-us"));
+
+ const SerdNode* hello_t4 =
+ serd_nodes_literal(nodes,
+ SERD_STRING("hello"),
+ SERD_HAS_DATATYPE,
+ serd_node_string_view(uri(world, 4)));
+
+ const SerdNode* hello_t5 =
+ serd_nodes_literal(nodes,
+ SERD_STRING("hello"),
+ SERD_HAS_DATATYPE,
+ serd_node_string_view(uri(world, 5)));
+
+ assert(!serd_model_add(model, uri(world, 98), uri(world, 4), hello, graph));
+ assert(
+ !serd_model_add(model, uri(world, 98), uri(world, 4), hello_t5, graph));
+
+ // (96 4 "hello"^^<4>) and (96 4 "hello"^^<5>)
+ assert(
+ !serd_model_add(model, uri(world, 96), uri(world, 4), hello_t4, graph));
+ assert(
+ !serd_model_add(model, uri(world, 96), uri(world, 4), hello_t5, graph));
+
+ // (94 5 "hello") and (94 5 "hello"@en-gb)
+ assert(!serd_model_add(model, uri(world, 94), uri(world, 5), hello, graph));
+ assert(
+ !serd_model_add(model, uri(world, 94), uri(world, 5), hello_gb, graph));
+
+ // (92 6 "hello"@en-us) and (92 6 "hello"@en-gb)
+ assert(
+ !serd_model_add(model, uri(world, 92), uri(world, 6), hello_us, graph));
+ assert(
+ !serd_model_add(model, uri(world, 92), uri(world, 6), hello_gb, graph));
+
+ // (14 6 "bonjour"@fr) and (14 6 "salut"@fr)
+ const SerdNode* const bonjour = serd_nodes_literal(
+ nodes, SERD_STRING("bonjour"), SERD_HAS_LANGUAGE, SERD_STRING("fr"));
+
+ const SerdNode* const salut = serd_nodes_literal(
+ nodes, SERD_STRING("salut"), SERD_HAS_LANGUAGE, SERD_STRING("fr"));
+
+ assert(!serd_model_add(model, uri(world, 14), uri(world, 6), bonjour, graph));
+ assert(!serd_model_add(model, uri(world, 14), uri(world, 6), salut, graph));
+
+ // Attempt to add duplicates
+ assert(serd_model_add(model, uri(world, 14), uri(world, 6), salut, graph));
+
+ // Add a blank node subject
+ const SerdNode* ablank = serd_nodes_blank(nodes, SERD_STRING("ablank"));
+
+ assert(!serd_model_add(model, ablank, uri(world, 6), salut, graph));
+
+ // Add statement with URI object
+ assert(!serd_model_add(model, ablank, uri(world, 6), uri(world, 7), graph));
+
+ return EXIT_SUCCESS;
+}
+
+static int
+test_read(SerdWorld* world,
+ SerdModel* model,
+ const SerdNode* g,
+ const unsigned n_quads)
+{
+ SerdNodes* const nodes = serd_nodes_new();
+
+ SerdCursor* cursor = serd_model_begin(model);
+ const SerdStatement* prev = NULL;
+ for (; !serd_cursor_equals(cursor, serd_model_end(model));
+ serd_cursor_advance(cursor)) {
+ const SerdStatement* statement = serd_cursor_get(cursor);
+ assert(statement);
+ assert(serd_statement_subject(statement));
+ assert(serd_statement_predicate(statement));
+ assert(serd_statement_object(statement));
+ assert(!serd_statement_equals(statement, prev));
+ assert(!serd_statement_equals(prev, statement));
+ prev = statement;
+ }
+
+ // Attempt to increment past end
+ assert(serd_cursor_advance(cursor) == SERD_ERR_BAD_CURSOR);
+ serd_cursor_free(cursor);
+
+ const SerdStringView s = SERD_STRING("hello");
+
+ const SerdNode* plain_hello = serd_nodes_string(nodes, s);
+
+ const SerdNode* type4_hello = serd_nodes_literal(
+ nodes, s, SERD_HAS_DATATYPE, serd_node_string_view(uri(world, 4)));
+
+ const SerdNode* type5_hello = serd_nodes_literal(
+ nodes, s, SERD_HAS_DATATYPE, serd_node_string_view(uri(world, 5)));
+
+ const SerdNode* gb_hello =
+ serd_nodes_literal(nodes, s, SERD_HAS_LANGUAGE, SERD_STRING("en-gb"));
+
+ const SerdNode* us_hello =
+ serd_nodes_literal(nodes, s, SERD_HAS_LANGUAGE, SERD_STRING("en-us"));
+
+#define NUM_PATTERNS 18
+
+ QueryTest patterns[NUM_PATTERNS] = {
+ {{NULL, NULL, NULL}, (int)(n_quads * N_OBJECTS_PER) + 12},
+ {{uri(world, 1), WILDCARD_NODE, WILDCARD_NODE}, 2},
+ {{uri(world, 9), uri(world, 9), uri(world, 9)}, 0},
+ {{uri(world, 1), uri(world, 2), uri(world, 4)}, 1},
+ {{uri(world, 3), uri(world, 4), WILDCARD_NODE}, 2},
+ {{WILDCARD_NODE, uri(world, 2), uri(world, 4)}, 1},
+ {{WILDCARD_NODE, WILDCARD_NODE, uri(world, 4)}, 1},
+ {{uri(world, 1), WILDCARD_NODE, WILDCARD_NODE}, 2},
+ {{uri(world, 1), WILDCARD_NODE, uri(world, 4)}, 1},
+ {{WILDCARD_NODE, uri(world, 2), WILDCARD_NODE}, 2},
+ {{uri(world, 98), uri(world, 4), plain_hello}, 1},
+ {{uri(world, 98), uri(world, 4), type5_hello}, 1},
+ {{uri(world, 96), uri(world, 4), type4_hello}, 1},
+ {{uri(world, 96), uri(world, 4), type5_hello}, 1},
+ {{uri(world, 94), uri(world, 5), plain_hello}, 1},
+ {{uri(world, 94), uri(world, 5), gb_hello}, 1},
+ {{uri(world, 92), uri(world, 6), gb_hello}, 1},
+ {{uri(world, 92), uri(world, 6), us_hello}, 1}};
+
+ Quad match = {uri(world, 1), uri(world, 2), uri(world, 4), g};
+ assert(serd_model_ask(model, match[0], match[1], match[2], match[3]));
+
+ Quad nomatch = {uri(world, 1), uri(world, 2), uri(world, 9), g};
+ assert(
+ !serd_model_ask(model, nomatch[0], nomatch[1], nomatch[2], nomatch[3]));
+
+ assert(!serd_model_get(model, NULL, NULL, uri(world, 3), g));
+ assert(!serd_model_get(model, uri(world, 1), uri(world, 99), NULL, g));
+
+ assert(serd_node_equals(
+ serd_model_get(model, uri(world, 1), uri(world, 2), NULL, g),
+ uri(world, 3)));
+ assert(serd_node_equals(
+ serd_model_get(model, uri(world, 1), NULL, uri(world, 3), g),
+ uri(world, 2)));
+ assert(serd_node_equals(
+ serd_model_get(model, NULL, uri(world, 2), uri(world, 3), g),
+ uri(world, 1)));
+ if (g) {
+ assert(serd_node_equals(
+ serd_model_get(model, uri(world, 1), uri(world, 2), uri(world, 3), NULL),
+ g));
+ }
+
+ for (unsigned i = 0; i < NUM_PATTERNS; ++i) {
+ QueryTest test = patterns[i];
+ Quad pat = {test.query[0], test.query[1], test.query[2], g};
+
+ SerdCursor* range = serd_model_find(model, pat[0], pat[1], pat[2], pat[3]);
+ int num_results = 0;
+ for (; !serd_cursor_is_end(range); serd_cursor_advance(range)) {
+ ++num_results;
+
+ const SerdStatement* first = serd_cursor_get(range);
+ assert(first);
+ assert(serd_statement_matches(first, pat[0], pat[1], pat[2], pat[3]));
+ }
+
+ serd_cursor_free(range);
+
+ assert(num_results == test.expected_num_results);
+ }
+
+ // Query blank node subject
+
+ const SerdNode* ablank = serd_nodes_blank(nodes, SERD_STRING("ablank"));
+
+ Quad pat = {ablank, 0, 0};
+ int num_results = 0;
+ SerdCursor* range = serd_model_find(model, pat[0], pat[1], pat[2], pat[3]);
+ for (; !serd_cursor_is_end(range); serd_cursor_advance(range)) {
+ ++num_results;
+ const SerdStatement* statement = serd_cursor_get(range);
+ assert(serd_statement_matches(statement, pat[0], pat[1], pat[2], pat[3]));
+ }
+ serd_cursor_free(range);
+
+ assert(num_results == 2);
+
+ // Test nested queries
+ const SerdNode* last_subject = 0;
+ range = serd_model_find(model, NULL, NULL, NULL, NULL);
+ for (; !serd_cursor_is_end(range); serd_cursor_advance(range)) {
+ const SerdStatement* statement = serd_cursor_get(range);
+ const SerdNode* subject = serd_statement_subject(statement);
+ if (subject == last_subject) {
+ continue;
+ }
+
+ Quad subpat = {subject, 0, 0};
+ SerdCursor* const subrange =
+ serd_model_find(model, subpat[0], subpat[1], subpat[2], subpat[3]);
+
+ assert(subrange);
+
+ const SerdStatement* substatement = serd_cursor_get(subrange);
+ uint64_t num_sub_results = 0;
+ assert(serd_statement_subject(substatement) == subject);
+ for (; !serd_cursor_is_end(subrange); serd_cursor_advance(subrange)) {
+ const SerdStatement* const front = serd_cursor_get(subrange);
+ assert(front);
+
+ assert(serd_statement_matches(
+ front, subpat[0], subpat[1], subpat[2], subpat[3]));
+
+ ++num_sub_results;
+ }
+ serd_cursor_free(subrange);
+ assert(num_sub_results == N_OBJECTS_PER);
+
+ uint64_t count = serd_model_count(model, subject, 0, 0, 0);
+ assert(count == num_sub_results);
+
+ last_subject = subject;
+ }
+ serd_cursor_free(range);
+
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static SerdStatus
+expected_error(void* const handle,
+ const SerdLogLevel level,
+ const size_t n_fields,
+ const SerdLogField* const fields,
+ const SerdStringView message)
+{
+ (void)level;
+ (void)n_fields;
+ (void)fields;
+ (void)handle;
+
+ fprintf(stderr, "expected: %s\n", message.buf);
+ return SERD_SUCCESS;
+}
+
+static SerdStatus
+ignore_only_index_error(void* const handle,
+ const SerdLogLevel level,
+ const size_t n_fields,
+ const SerdLogField* const fields,
+ const SerdStringView message)
+{
+ (void)handle;
+ (void)level;
+ (void)n_fields;
+ (void)fields;
+
+ if (!strstr(message.buf, "index")) {
+ fprintf(stderr, "error: %s\n", message.buf);
+ }
+
+ assert(strstr(message.buf, "index"));
+
+ return SERD_SUCCESS;
+}
+
+static int
+test_free_null(SerdWorld* world, const unsigned n_quads)
+{
+ (void)world;
+ (void)n_quads;
+
+ serd_model_free(NULL); // Shouldn't crash
+ return 0;
+}
+
+static int
+test_get_world(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ assert(serd_model_world(model) == world);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_get_default_order(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* const model1 = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdModel* const model2 = serd_model_new(world, SERD_ORDER_GPSO, 0u);
+
+ assert(serd_model_default_order(model1) == SERD_ORDER_SPO);
+ assert(serd_model_default_order(model2) == SERD_ORDER_GPSO);
+
+ serd_model_free(model2);
+ serd_model_free(model1);
+ return 0;
+}
+
+static int
+test_get_flags(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ const SerdModelFlags flags = SERD_STORE_GRAPHS | SERD_STORE_CARETS;
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, flags);
+
+ assert(serd_model_flags(model) & SERD_STORE_GRAPHS);
+ assert(serd_model_flags(model) & SERD_STORE_CARETS);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_all_begin(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdCursor* begin = serd_model_begin(model);
+ SerdCursor* first = serd_model_find(model, NULL, NULL, NULL, NULL);
+
+ assert(serd_cursor_equals(begin, first));
+
+ serd_cursor_free(first);
+ serd_cursor_free(begin);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_begin_ordered(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+
+ assert(
+ !serd_model_add(model, uri(world, 1), uri(world, 2), uri(world, 3), 0));
+
+ SerdCursor* i = serd_model_begin_ordered(model, SERD_ORDER_SPO);
+ assert(i);
+ assert(!serd_cursor_is_end(i));
+ serd_cursor_free(i);
+
+ i = serd_model_begin_ordered(model, SERD_ORDER_POS);
+ assert(serd_cursor_is_end(i));
+ serd_cursor_free(i);
+
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_add_with_iterator(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ serd_set_log_func(world, expected_error, NULL);
+ assert(
+ !serd_model_add(model, uri(world, 1), uri(world, 2), uri(world, 3), 0));
+
+ // Add a statement with an active iterator
+ SerdCursor* iter = serd_model_begin(model);
+ assert(
+ !serd_model_add(model, uri(world, 1), uri(world, 2), uri(world, 4), 0));
+
+ // Check that iterator has been invalidated
+ assert(!serd_cursor_get(iter));
+ assert(serd_cursor_advance(iter) == SERD_ERR_BAD_CURSOR);
+
+ serd_cursor_free(iter);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_add_remove_nodes(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ assert(serd_model_nodes(model));
+ assert(serd_nodes_size(serd_model_nodes(model)) == 0);
+
+ const SerdNode* const a = uri(world, 1);
+ const SerdNode* const b = uri(world, 2);
+ const SerdNode* const c = uri(world, 3);
+
+ // Add 2 statements with 3 nodes
+ assert(!serd_model_add(model, a, b, a, NULL));
+ assert(!serd_model_add(model, c, b, c, NULL));
+ assert(serd_model_size(model) == 2);
+ assert(serd_nodes_size(serd_model_nodes(model)) == 3);
+
+ // Remove one statement to leave 2 nodes
+ SerdCursor* const begin = serd_model_begin(model);
+ assert(!serd_model_erase(model, begin));
+ assert(serd_model_size(model) == 1);
+ assert(serd_nodes_size(serd_model_nodes(model)) == 2);
+ serd_cursor_free(begin);
+
+ // Clear the last statement to leave 0 nodes
+ assert(!serd_model_clear(model));
+ assert(serd_nodes_size(serd_model_nodes(model)) == 0);
+
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_add_index(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* const model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ const SerdNode* const s = uri(world, 0);
+ const SerdNode* const p = uri(world, 1);
+ const SerdNode* const o1 = uri(world, 2);
+ const SerdNode* const o2 = uri(world, 3);
+
+ // Try to add an existing index
+ assert(serd_model_add_index(model, SERD_ORDER_SPO) == SERD_FAILURE);
+
+ // Add a couple of statements
+ serd_model_add(model, s, p, o1, NULL);
+ serd_model_add(model, s, p, o2, NULL);
+ assert(serd_model_size(model) == 2);
+
+ // Add a new index
+ assert(!serd_model_add_index(model, SERD_ORDER_PSO));
+
+ // Count statements via the new index
+ size_t count = 0u;
+ SerdCursor* cur = serd_model_find(model, NULL, p, NULL, NULL);
+ while (!serd_cursor_is_end(cur)) {
+ ++count;
+ serd_cursor_advance(cur);
+ }
+ serd_cursor_free(cur);
+
+ serd_model_free(model);
+ assert(count == 2);
+ return 0;
+}
+
+static int
+test_remove_index(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* const model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ const SerdNode* const s = uri(world, 0);
+ const SerdNode* const p = uri(world, 1);
+ const SerdNode* const o1 = uri(world, 2);
+ const SerdNode* const o2 = uri(world, 3);
+
+ // Try to remove default and non-existent indices
+ assert(serd_model_drop_index(model, SERD_ORDER_SPO) == SERD_ERR_BAD_CALL);
+ assert(serd_model_drop_index(model, SERD_ORDER_PSO) == SERD_FAILURE);
+
+ // Add a couple of statements so that dropping an index isn't trivial
+ serd_model_add(model, s, p, o1, NULL);
+ serd_model_add(model, s, p, o2, NULL);
+ assert(serd_model_size(model) == 2);
+
+ assert(serd_model_add_index(model, SERD_ORDER_PSO) == SERD_SUCCESS);
+ assert(serd_model_drop_index(model, SERD_ORDER_PSO) == SERD_SUCCESS);
+ assert(serd_model_drop_index(model, SERD_ORDER_PSO) == SERD_FAILURE);
+ assert(serd_model_size(model) == 2);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_inserter(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdNodes* const nodes = serd_nodes_new();
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdSink* inserter = serd_inserter_new(model, NULL);
+
+ const SerdNode* const s =
+ serd_nodes_uri(nodes, SERD_STRING("http://example.org/s"));
+
+ const SerdNode* const p =
+ serd_nodes_uri(nodes, SERD_STRING("http://example.org/p"));
+
+ const SerdNode* const rel = serd_nodes_uri(nodes, SERD_STRING("rel"));
+
+ serd_set_log_func(world, expected_error, NULL);
+
+ assert(serd_sink_write(inserter, 0, s, p, rel, NULL) == SERD_ERR_BAD_ARG);
+
+ serd_sink_free(inserter);
+ serd_model_free(model);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_erase_with_iterator(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ serd_set_log_func(world, expected_error, NULL);
+ assert(
+ !serd_model_add(model, uri(world, 1), uri(world, 2), uri(world, 3), 0));
+ assert(
+ !serd_model_add(model, uri(world, 4), uri(world, 5), uri(world, 6), 0));
+
+ // Erase a statement with an active iterator
+ SerdCursor* iter1 = serd_model_begin(model);
+ SerdCursor* iter2 = serd_model_begin(model);
+ assert(!serd_model_erase(model, iter1));
+
+ // Check that erased iterator points to the next statement
+ const SerdStatement* const s1 = serd_cursor_get(iter1);
+ assert(s1);
+ assert(
+ serd_statement_matches(s1, uri(world, 4), uri(world, 5), uri(world, 6), 0));
+
+ // Check that other iterator has been invalidated
+ assert(!serd_cursor_get(iter2));
+ assert(serd_cursor_advance(iter2) == SERD_ERR_BAD_CURSOR);
+
+ // Check that erasing the end iterator does nothing
+ SerdCursor* const end = serd_cursor_copy(serd_model_end(model));
+ assert(serd_model_erase(model, end) == SERD_FAILURE);
+
+ serd_cursor_free(end);
+ serd_cursor_free(iter2);
+ serd_cursor_free(iter1);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_add_erase(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdNodes* const nodes = serd_nodes_new();
+ SerdModel* const model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ // Add (s p "hello")
+ const SerdNode* s = uri(world, 1);
+ const SerdNode* p = uri(world, 2);
+ const SerdNode* hello = serd_nodes_string(nodes, SERD_STRING("hello"));
+
+ assert(!serd_model_add(model, s, p, hello, NULL));
+ assert(serd_model_ask(model, s, p, hello, NULL));
+
+ // Add (s p "hi")
+ const SerdNode* hi = serd_nodes_string(nodes, SERD_STRING("hi"));
+ assert(!serd_model_add(model, s, p, hi, NULL));
+ assert(serd_model_ask(model, s, p, hi, NULL));
+
+ // Erase (s p "hi")
+ SerdCursor* iter = serd_model_find(model, s, p, hi, NULL);
+ assert(!serd_model_erase(model, iter));
+ assert(serd_model_size(model) == 1);
+ serd_cursor_free(iter);
+
+ // Check that erased statement can not be found
+ SerdCursor* empty = serd_model_find(model, s, p, hi, NULL);
+ assert(serd_cursor_is_end(empty));
+ serd_cursor_free(empty);
+
+ serd_model_free(model);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_add_bad_statement(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdNodes* const nodes = serd_nodes_new();
+ const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s"));
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* o = serd_nodes_uri(nodes, SERD_STRING("urn:o"));
+
+ const SerdNode* f =
+ serd_nodes_uri(nodes, SERD_STRING("file:///tmp/file.ttl"));
+
+ SerdCaret* caret = serd_caret_new(f, 16, 18);
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ assert(!serd_model_add_with_caret(model, s, p, o, NULL, caret));
+
+ SerdCursor* const begin = serd_model_begin(model);
+ const SerdStatement* statement = serd_cursor_get(begin);
+ assert(statement);
+
+ assert(serd_node_equals(serd_statement_subject(statement), s));
+ assert(serd_node_equals(serd_statement_predicate(statement), p));
+ assert(serd_node_equals(serd_statement_object(statement), o));
+ assert(!serd_statement_graph(statement));
+
+ const SerdCaret* statement_caret = serd_statement_caret(statement);
+ assert(statement_caret);
+ assert(serd_node_equals(serd_caret_name(statement_caret), f));
+ assert(serd_caret_line(statement_caret) == 16);
+ assert(serd_caret_column(statement_caret) == 18);
+
+ assert(!serd_model_erase(model, begin));
+
+ serd_cursor_free(begin);
+ serd_model_free(model);
+ serd_caret_free(caret);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_add_with_caret(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdNodes* const nodes = serd_nodes_new();
+ const SerdNode* lit = serd_nodes_string(nodes, SERD_STRING("string"));
+ const SerdNode* uri = serd_nodes_uri(nodes, SERD_STRING("urn:uri"));
+ const SerdNode* blank = serd_nodes_blank(nodes, SERD_STRING("b1"));
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ assert(serd_model_add(model, lit, uri, uri, NULL));
+ assert(serd_model_add(model, uri, blank, uri, NULL));
+ assert(serd_model_add(model, uri, uri, uri, lit));
+
+ serd_model_free(model);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_erase_all(SerdWorld* world, const unsigned n_quads)
+{
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ serd_model_add_index(model, SERD_ORDER_OSP);
+ generate(world, model, n_quads, NULL);
+
+ SerdCursor* iter = serd_model_begin(model);
+ while (!serd_cursor_equals(iter, serd_model_end(model))) {
+ assert(!serd_model_erase(model, iter));
+ }
+
+ assert(serd_model_empty(model));
+
+ serd_cursor_free(iter);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_clear(SerdWorld* world, const unsigned n_quads)
+{
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ generate(world, model, n_quads, NULL);
+
+ serd_model_clear(model);
+ assert(serd_model_empty(model));
+
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_copy(SerdWorld* world, const unsigned n_quads)
+{
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ generate(world, model, n_quads, NULL);
+
+ SerdModel* copy = serd_model_copy(model);
+ assert(serd_model_equals(model, copy));
+
+ serd_model_free(model);
+ serd_model_free(copy);
+ return 0;
+}
+
+static int
+test_equals(SerdWorld* world, const unsigned n_quads)
+{
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ generate(world, model, n_quads, NULL);
+ serd_model_add(
+ model, uri(world, 0), uri(world, 1), uri(world, 2), uri(world, 3));
+
+ assert(serd_model_equals(NULL, NULL));
+ assert(!serd_model_equals(NULL, model));
+ assert(!serd_model_equals(model, NULL));
+
+ SerdModel* empty = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ assert(!serd_model_equals(model, empty));
+
+ SerdModel* different = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ generate(world, different, n_quads, NULL);
+ serd_model_add(
+ different, uri(world, 1), uri(world, 1), uri(world, 2), uri(world, 3));
+
+ assert(serd_model_size(model) == serd_model_size(different));
+ assert(!serd_model_equals(model, different));
+
+ serd_model_free(model);
+ serd_model_free(empty);
+ serd_model_free(different);
+ return 0;
+}
+
+static int
+test_find_past_end(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ const SerdNode* s = uri(world, 1);
+ const SerdNode* p = uri(world, 2);
+ const SerdNode* o = uri(world, 3);
+ assert(!serd_model_add(model, s, p, o, 0));
+ assert(serd_model_ask(model, s, p, o, 0));
+
+ const SerdNode* huge = uri(world, 999);
+ SerdCursor* range = serd_model_find(model, huge, huge, huge, 0);
+ assert(serd_cursor_is_end(range));
+
+ serd_cursor_free(range);
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_find_unknown_node(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ const SerdNode* const s = uri(world, 1);
+ const SerdNode* const p = uri(world, 2);
+ const SerdNode* const o = uri(world, 3);
+
+ SerdModel* const model =
+ serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+
+ // Add one statement
+ assert(!serd_model_add(model, s, p, o, NULL));
+ assert(serd_model_ask(model, s, p, o, NULL));
+
+ /* Test searching for statements that contain a non-existent node. This is
+ semantically equivalent to any other non-matching pattern, but can be
+ implemented with a fast path that avoids searching a statement index
+ entirely. */
+
+ const SerdNode* const q = uri(world, 42);
+ assert(!serd_model_ask(model, s, p, o, q));
+ assert(!serd_model_ask(model, s, p, q, NULL));
+ assert(!serd_model_ask(model, s, q, o, NULL));
+ assert(!serd_model_ask(model, q, p, o, NULL));
+
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_find_graph(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ const SerdNode* const s = uri(world, 1);
+ const SerdNode* const p = uri(world, 2);
+ const SerdNode* const o1 = uri(world, 3);
+ const SerdNode* const o2 = uri(world, 4);
+ const SerdNode* const g = uri(world, 5);
+
+ for (unsigned indexed = 0u; indexed < 2u; ++indexed) {
+ SerdModel* const model =
+ serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+
+ if (indexed) {
+ serd_model_add_index(model, SERD_ORDER_GSPO);
+ }
+
+ // Add one statement in a named graph and one in the default graph
+ assert(!serd_model_add(model, s, p, o1, NULL));
+ assert(!serd_model_add(model, s, p, o2, g));
+
+ // Both statements can be found in the default graph
+ assert(serd_model_ask(model, s, p, o1, NULL));
+ assert(serd_model_ask(model, s, p, o2, NULL));
+
+ // Only the one statement can be found in the named graph
+ assert(!serd_model_ask(model, s, p, o1, g));
+ assert(serd_model_ask(model, s, p, o2, g));
+
+ serd_model_free(model);
+ }
+
+ return 0;
+}
+
+static int
+test_range(SerdWorld* world, const unsigned n_quads)
+{
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ generate(world, model, n_quads, NULL);
+
+ SerdCursor* range1 = serd_model_begin(model);
+ SerdCursor* range2 = serd_model_begin(model);
+
+ assert(!serd_cursor_is_end(range1));
+ assert(serd_cursor_is_end(NULL));
+
+ assert(serd_cursor_equals(NULL, NULL));
+ assert(!serd_cursor_equals(range1, NULL));
+ assert(!serd_cursor_equals(NULL, range1));
+ assert(serd_cursor_equals(range1, range2));
+
+ assert(!serd_cursor_advance(range2));
+ assert(!serd_cursor_equals(range1, range2));
+
+ serd_cursor_free(range2);
+ serd_cursor_free(range1);
+ serd_model_free(model);
+
+ return 0;
+}
+
+static int
+test_triple_index_read(SerdWorld* world, const unsigned n_quads)
+{
+ serd_set_log_func(world, ignore_only_index_error, NULL);
+
+ for (unsigned i = 0; i < 6; ++i) {
+ SerdModel* model = serd_model_new(world, (SerdStatementOrder)i, 0u);
+ generate(world, model, n_quads, 0);
+ assert(!test_read(world, model, 0, n_quads));
+ serd_model_free(model);
+ }
+
+ return 0;
+}
+
+static int
+test_quad_index_read(SerdWorld* world, const unsigned n_quads)
+{
+ serd_set_log_func(world, ignore_only_index_error, NULL);
+
+ for (unsigned i = 0; i < 6; ++i) {
+ SerdModel* model =
+ serd_model_new(world, (SerdStatementOrder)i, SERD_STORE_GRAPHS);
+
+ const SerdNode* graph = uri(world, 42);
+ generate(world, model, n_quads, graph);
+ assert(!test_read(world, model, graph, n_quads));
+ serd_model_free(model);
+ }
+
+ return 0;
+}
+
+static int
+test_remove_graph(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_GSPO, SERD_STORE_GRAPHS);
+
+ // Generate a couple of graphs
+ const SerdNode* graph42 = uri(world, 42);
+ const SerdNode* graph43 = uri(world, 43);
+ generate(world, model, 1, graph42);
+ generate(world, model, 1, graph43);
+
+ // Remove one graph via range
+ SerdCursor* range = serd_model_find(model, NULL, NULL, NULL, graph43);
+ SerdStatus st = serd_model_erase_statements(model, range);
+ assert(!st);
+ serd_cursor_free(range);
+
+ // Erase the first tuple (an element in the default graph)
+ SerdCursor* iter = serd_model_begin(model);
+ assert(!serd_model_erase(model, iter));
+ serd_cursor_free(iter);
+
+ // Ensure only the other graph is left
+ Quad pat = {0, 0, 0, graph42};
+ /* fprintf(stderr, "GRAPH: %s\n", serd_node_string(graph42)); */
+ for (iter = serd_model_begin(model);
+ !serd_cursor_equals(iter, serd_model_end(model));
+ serd_cursor_advance(iter)) {
+ const SerdStatement* const s = serd_cursor_get(iter);
+ assert(s);
+ /* fprintf(stderr, "STATEMENT GRAPH: %s\n", serd_node_string(pat[3])); */
+ assert(serd_statement_matches(s, pat[0], pat[1], pat[2], pat[3]));
+ }
+ serd_cursor_free(iter);
+
+ serd_model_free(model);
+ return 0;
+}
+
+static int
+test_default_graph(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ const SerdNode* s = uri(world, 1);
+ const SerdNode* p = uri(world, 2);
+ const SerdNode* o = uri(world, 3);
+ const SerdNode* g1 = uri(world, 101);
+ const SerdNode* g2 = uri(world, 102);
+
+ {
+ // Make a model that does not store graphs
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+
+ // Insert a statement into a graph (which will be dropped)
+ assert(!serd_model_add(model, s, p, o, g1));
+
+ // Attempt to insert the same statement into another graph
+ assert(serd_model_add(model, s, p, o, g2) == SERD_FAILURE);
+
+ // Ensure that we only see the statement once
+ assert(serd_model_count(model, s, p, o, NULL) == 1);
+
+ serd_model_free(model);
+ }
+
+ {
+ // Make a model that stores graphs
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+
+ // Insert the same statement into two graphs
+ assert(!serd_model_add(model, s, p, o, g1));
+ assert(!serd_model_add(model, s, p, o, g2));
+
+ // Ensure we see the statement twice
+ assert(serd_model_count(model, s, p, o, NULL) == 2);
+
+ serd_model_free(model);
+ }
+
+ return 0;
+}
+
+static int
+test_write_flat_range(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+ SerdNodes* nodes = serd_nodes_new();
+
+ const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s"));
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* b1 = serd_nodes_blank(nodes, SERD_STRING("b1"));
+ const SerdNode* b2 = serd_nodes_blank(nodes, SERD_STRING("b2"));
+ const SerdNode* o = serd_nodes_uri(nodes, SERD_STRING("urn:o"));
+
+ serd_model_add(model, s, p, b1, NULL);
+ serd_model_add(model, b1, p, o, NULL);
+ serd_model_add(model, s, p, b2, NULL);
+ serd_model_add(model, b2, p, o, NULL);
+
+ SerdBuffer buffer = {NULL, 0};
+ SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
+ SerdByteSink* out = serd_byte_sink_new_buffer(&buffer);
+ SerdWriter* writer = serd_writer_new(world, SERD_TURTLE, 0, env, out);
+
+ SerdCursor* all = serd_model_begin(model);
+ serd_describe_range(all, serd_writer_sink(writer), SERD_NO_INLINE_OBJECTS);
+ serd_cursor_free(all);
+
+ serd_writer_finish(writer);
+ const char* str = serd_buffer_sink_finish(&buffer);
+ const char* expected = "<urn:s>\n"
+ " <urn:p> _:b1 ,\n"
+ " _:b2 .\n"
+ "\n"
+ "_:b1\n"
+ " <urn:p> <urn:o> .\n"
+ "\n"
+ "_:b2\n"
+ " <urn:p> <urn:o> .\n";
+
+ assert(!strcmp(str, expected));
+
+ free(buffer.buf);
+ serd_writer_free(writer);
+ serd_byte_sink_free(out);
+ serd_model_free(model);
+ serd_env_free(env);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_write_bad_list(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+ SerdNodes* nodes = serd_nodes_new();
+
+ serd_model_add_index(model, SERD_ORDER_OPS);
+
+ const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s"));
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* list1 = serd_nodes_blank(nodes, SERD_STRING("l1"));
+ const SerdNode* list2 = serd_nodes_blank(nodes, SERD_STRING("l2"));
+ const SerdNode* nofirst = serd_nodes_blank(nodes, SERD_STRING("nof"));
+ const SerdNode* norest = serd_nodes_blank(nodes, SERD_STRING("nor"));
+ const SerdNode* pfirst = serd_nodes_uri(nodes, SERD_STRING(RDF_FIRST));
+ const SerdNode* prest = serd_nodes_uri(nodes, SERD_STRING(RDF_REST));
+ const SerdNode* val1 = serd_nodes_string(nodes, SERD_STRING("a"));
+ const SerdNode* val2 = serd_nodes_string(nodes, SERD_STRING("b"));
+
+ // List where second node has no rdf:first
+ serd_model_add(model, s, p, list1, NULL);
+ serd_model_add(model, list1, pfirst, val1, NULL);
+ serd_model_add(model, list1, prest, nofirst, NULL);
+
+ // List where second node has no rdf:rest
+ serd_model_add(model, s, p, list2, NULL);
+ serd_model_add(model, list2, pfirst, val1, NULL);
+ serd_model_add(model, list2, prest, norest, NULL);
+ serd_model_add(model, norest, pfirst, val2, NULL);
+
+ SerdBuffer buffer = {NULL, 0};
+ SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
+ SerdByteSink* out = serd_byte_sink_new_buffer(&buffer);
+ SerdWriter* writer = serd_writer_new(world, SERD_TURTLE, 0, env, out);
+
+ SerdCursor* all = serd_model_begin(model);
+ serd_describe_range(all, serd_writer_sink(writer), 0);
+ serd_cursor_free(all);
+
+ serd_writer_finish(writer);
+ const char* str = serd_buffer_sink_finish(&buffer);
+ const char* expected = "<urn:s>\n"
+ " <urn:p> (\n"
+ " \"a\"\n"
+ " ) , (\n"
+ " \"a\"\n"
+ " \"b\"\n"
+ " ) .\n";
+
+ assert(!strcmp(str, expected));
+
+ free(buffer.buf);
+ serd_writer_free(writer);
+ serd_byte_sink_free(out);
+ serd_model_free(model);
+ serd_env_free(env);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_write_infinite_list(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, SERD_STORE_GRAPHS);
+ SerdNodes* nodes = serd_nodes_new();
+
+ serd_model_add_index(model, SERD_ORDER_OPS);
+
+ const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s"));
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* list1 = serd_nodes_blank(nodes, SERD_STRING("l1"));
+ const SerdNode* list2 = serd_nodes_blank(nodes, SERD_STRING("l2"));
+
+ const SerdNode* pfirst = serd_nodes_uri(nodes, SERD_STRING(RDF_FIRST));
+ const SerdNode* prest = serd_nodes_uri(nodes, SERD_STRING(RDF_REST));
+ const SerdNode* val1 = serd_nodes_string(nodes, SERD_STRING("a"));
+ const SerdNode* val2 = serd_nodes_string(nodes, SERD_STRING("b"));
+
+ // List with a cycle: list1 -> list2 -> list1 -> list2 ...
+ serd_model_add(model, s, p, list1, NULL);
+ serd_model_add(model, list1, pfirst, val1, NULL);
+ serd_model_add(model, list1, prest, list2, NULL);
+ serd_model_add(model, list2, pfirst, val2, NULL);
+ serd_model_add(model, list2, prest, list1, NULL);
+
+ SerdBuffer buffer = {NULL, 0};
+ SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
+ SerdByteSink* out = serd_byte_sink_new_buffer(&buffer);
+ SerdWriter* writer = serd_writer_new(world, SERD_TURTLE, 0, env, out);
+
+ serd_env_set_prefix(
+ env,
+ SERD_STRING("rdf"),
+ SERD_STRING("http://www.w3.org/1999/02/22-rdf-syntax-ns#"));
+
+ SerdCursor* all = serd_model_begin(model);
+ serd_describe_range(all, serd_writer_sink(writer), 0);
+ serd_cursor_free(all);
+
+ serd_writer_finish(writer);
+ const char* str = serd_buffer_sink_finish(&buffer);
+ const char* expected = "<urn:s>\n"
+ " <urn:p> _:l1 .\n"
+ "\n"
+ "_:l1\n"
+ " rdf:first \"a\" ;\n"
+ " rdf:rest [\n"
+ " rdf:first \"b\" ;\n"
+ " rdf:rest _:l1\n"
+ " ] .\n";
+
+ assert(!strcmp(str, expected));
+
+ free(buffer.buf);
+ serd_writer_free(writer);
+ serd_byte_sink_free(out);
+ serd_model_free(model);
+ serd_env_free(env);
+ serd_nodes_free(nodes);
+
+ return 0;
+}
+
+typedef struct {
+ size_t n_written;
+ size_t max_successes;
+} FailingWriteFuncState;
+
+/// Write function that fails after a certain number of writes
+static size_t
+failing_write_func(const void* buf, size_t size, size_t nmemb, void* stream)
+{
+ (void)buf;
+ (void)size;
+ (void)nmemb;
+
+ FailingWriteFuncState* state = (FailingWriteFuncState*)stream;
+
+ return (++state->n_written > state->max_successes) ? 0 : nmemb;
+}
+
+static int
+test_write_error_in_list_subject(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ serd_set_log_func(world, expected_error, NULL);
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdNodes* nodes = serd_nodes_new();
+
+ serd_model_add_index(model, SERD_ORDER_OPS);
+
+ /* const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s")); */
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* o = serd_nodes_uri(nodes, SERD_STRING("urn:o"));
+ const SerdNode* l1 = serd_nodes_blank(nodes, SERD_STRING("l1"));
+
+ const SerdNode* one = serd_nodes_integer(nodes, 1, SERD_EMPTY_STRING());
+ const SerdNode* l2 = serd_nodes_blank(nodes, SERD_STRING("l2"));
+ const SerdNode* two = serd_nodes_integer(nodes, 2, SERD_EMPTY_STRING());
+
+ const SerdNode* rdf_first = serd_nodes_uri(nodes, SERD_STRING(RDF_FIRST));
+ const SerdNode* rdf_rest = serd_nodes_uri(nodes, SERD_STRING(RDF_REST));
+ const SerdNode* rdf_nil = serd_nodes_uri(nodes, SERD_STRING(RDF_NIL));
+
+ serd_model_add(model, l1, rdf_first, one, NULL);
+ serd_model_add(model, l1, rdf_rest, l2, NULL);
+ serd_model_add(model, l2, rdf_first, two, NULL);
+ serd_model_add(model, l2, rdf_rest, rdf_nil, NULL);
+ serd_model_add(model, l1, p, o, NULL);
+
+ SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
+
+ for (size_t max_successes = 0; max_successes < 18; ++max_successes) {
+ FailingWriteFuncState state = {0, max_successes};
+ SerdByteSink* out =
+ serd_byte_sink_new_function(failing_write_func, &state, 1);
+ SerdWriter* writer = serd_writer_new(world, SERD_TURTLE, 0, env, out);
+
+ const SerdSink* const sink = serd_writer_sink(writer);
+ SerdCursor* const all = serd_model_begin(model);
+ const SerdStatus st = serd_describe_range(all, sink, 0);
+ serd_cursor_free(all);
+
+ assert(st == SERD_ERR_BAD_WRITE);
+
+ serd_writer_free(writer);
+ serd_byte_sink_free(out);
+ }
+
+ serd_env_free(env);
+ serd_model_free(model);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+static int
+test_write_error_in_list_object(SerdWorld* world, const unsigned n_quads)
+{
+ (void)n_quads;
+
+ serd_set_log_func(world, expected_error, NULL);
+
+ SerdModel* model = serd_model_new(world, SERD_ORDER_SPO, 0u);
+ SerdNodes* nodes = serd_nodes_new();
+
+ serd_model_add_index(model, SERD_ORDER_OPS);
+
+ const SerdNode* s = serd_nodes_uri(nodes, SERD_STRING("urn:s"));
+ const SerdNode* p = serd_nodes_uri(nodes, SERD_STRING("urn:p"));
+ const SerdNode* l1 = serd_nodes_blank(nodes, SERD_STRING("l1"));
+
+ const SerdNode* one = serd_nodes_integer(nodes, 1, SERD_EMPTY_STRING());
+ const SerdNode* l2 = serd_nodes_blank(nodes, SERD_STRING("l2"));
+ const SerdNode* two = serd_nodes_integer(nodes, 2, SERD_EMPTY_STRING());
+
+ const SerdNode* rdf_first = serd_nodes_uri(nodes, SERD_STRING(RDF_FIRST));
+ const SerdNode* rdf_rest = serd_nodes_uri(nodes, SERD_STRING(RDF_REST));
+ const SerdNode* rdf_nil = serd_nodes_uri(nodes, SERD_STRING(RDF_NIL));
+
+ serd_model_add(model, s, p, l1, NULL);
+ serd_model_add(model, l1, rdf_first, one, NULL);
+ serd_model_add(model, l1, rdf_rest, l2, NULL);
+ serd_model_add(model, l2, rdf_first, two, NULL);
+ serd_model_add(model, l2, rdf_rest, rdf_nil, NULL);
+
+ SerdEnv* env = serd_env_new(SERD_EMPTY_STRING());
+
+ for (size_t max_successes = 0; max_successes < 21; ++max_successes) {
+ FailingWriteFuncState state = {0, max_successes};
+ SerdByteSink* out =
+ serd_byte_sink_new_function(failing_write_func, &state, 1);
+ SerdWriter* writer = serd_writer_new(world, SERD_TURTLE, 0, env, out);
+
+ const SerdSink* const sink = serd_writer_sink(writer);
+ SerdCursor* const all = serd_model_begin(model);
+ const SerdStatus st = serd_describe_range(all, sink, 0);
+ serd_cursor_free(all);
+
+ assert(st == SERD_ERR_BAD_WRITE);
+
+ serd_writer_free(writer);
+ serd_byte_sink_free(out);
+ }
+
+ serd_env_free(env);
+ serd_model_free(model);
+ serd_nodes_free(nodes);
+ return 0;
+}
+
+int
+main(void)
+{
+ static const unsigned n_quads = 300;
+
+ serd_model_free(NULL); // Shouldn't crash
+
+ typedef int (*TestFunc)(SerdWorld*, unsigned);
+
+ const TestFunc tests[] = {test_free_null,
+ test_get_world,
+ test_get_default_order,
+ test_get_flags,
+ test_all_begin,
+ test_begin_ordered,
+ test_add_with_iterator,
+ test_add_remove_nodes,
+ test_add_index,
+ test_remove_index,
+ test_inserter,
+ test_erase_with_iterator,
+ test_add_erase,
+ test_add_bad_statement,
+ test_add_with_caret,
+ test_erase_all,
+ test_clear,
+ test_copy,
+ test_equals,
+ test_find_past_end,
+ test_find_unknown_node,
+ test_find_graph,
+ test_range,
+ test_triple_index_read,
+ test_quad_index_read,
+ test_remove_graph,
+ test_default_graph,
+ test_write_flat_range,
+ test_write_bad_list,
+ test_write_infinite_list,
+ test_write_error_in_list_subject,
+ test_write_error_in_list_object,
+ NULL};
+
+ SerdWorld* world = serd_world_new();
+ int ret = 0;
+
+ for (const TestFunc* t = tests; *t; ++t) {
+ serd_set_log_func(world, NULL, NULL);
+ ret += (*t)(world, n_quads);
+ }
+
+ serd_world_free(world);
+ return ret;
+}
diff --git a/test/test_string.c b/test/test_string.c
index 1181de01..2bd47680 100644
--- a/test/test_string.c
+++ b/test/test_string.c
@@ -32,7 +32,7 @@ test_strerror(void)
{
const char* msg = serd_strerror(SERD_SUCCESS);
assert(!strcmp(msg, "Success"));
- for (int i = SERD_FAILURE; i <= SERD_ERR_BAD_URI; ++i) {
+ for (int i = SERD_FAILURE; i <= SERD_ERR_BAD_INDEX; ++i) {
msg = serd_strerror((SerdStatus)i);
assert(strcmp(msg, "Success"));
}