From 6295d10a7f076aa4ee403a20c28359ef3a747a68 Mon Sep 17 00:00:00 2001 From: David Robillard Date: Sun, 4 Feb 2018 18:35:41 +0100 Subject: Make nodes opaque --- src/env.c | 81 +++++++++++++++------------- src/node.c | 169 +++++++++++++++++++++++++++++++++++------------------------ src/reader.c | 24 ++++----- src/reader.h | 3 +- src/serdi.c | 13 ++--- src/writer.c | 143 +++++++++++++++++++++++++------------------------- 6 files changed, 236 insertions(+), 197 deletions(-) (limited to 'src') diff --git a/src/env.c b/src/env.c index aa5c3b45..488e52fe 100644 --- a/src/env.c +++ b/src/env.c @@ -14,6 +14,8 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "node.h" + #include "serd/serd.h" #include @@ -22,14 +24,14 @@ #include typedef struct { - SerdNode name; - SerdNode uri; + SerdNode* name; + SerdNode* uri; } SerdPrefix; struct SerdEnvImpl { SerdPrefix* prefixes; size_t n_prefixes; - SerdNode base_uri_node; + SerdNode* base_uri_node; SerdURI base_uri; }; @@ -51,11 +53,11 @@ serd_env_free(SerdEnv* env) } for (size_t i = 0; i < env->n_prefixes; ++i) { - serd_node_free(&env->prefixes[i].name); - serd_node_free(&env->prefixes[i].uri); + serd_node_free(env->prefixes[i].name); + serd_node_free(env->prefixes[i].uri); } free(env->prefixes); - serd_node_free(&env->base_uri_node); + serd_node_free(env->base_uri_node); free(env); } @@ -65,7 +67,7 @@ serd_env_base_uri(const SerdEnv* env, SerdURI* out) if (out) { *out = env->base_uri; } - return &env->base_uri_node; + return env->base_uri_node; } SerdStatus @@ -77,13 +79,13 @@ serd_env_set_base_uri(SerdEnv* env, } // Resolve base URI and create a new node and URI for it - SerdURI base_uri; - SerdNode base_uri_node = serd_node_new_uri_from_node( + SerdURI base_uri; + SerdNode* base_uri_node = serd_node_new_uri_from_node( uri, &env->base_uri, &base_uri); - if (base_uri_node.buf) { + if (base_uri_node) { // Replace the current base URI - serd_node_free(&env->base_uri_node); + serd_node_free(env->base_uri_node); env->base_uri_node = base_uri_node; env->base_uri = base_uri; return SERD_SUCCESS; @@ -97,7 +99,7 @@ serd_env_find(const SerdEnv* env, size_t name_len) { for (size_t i = 0; i < env->n_prefixes; ++i) { - const SerdNode* const prefix_name = &env->prefixes[i].name; + const SerdNode* const prefix_name = env->prefixes[i].name; if (prefix_name->n_bytes == name_len) { if (!memcmp(serd_node_string(prefix_name), name, name_len)) { return &env->prefixes[i]; @@ -115,10 +117,10 @@ serd_env_add(SerdEnv* env, const char* name_str = serd_node_string(name); SerdPrefix* const prefix = serd_env_find(env, name_str, name->n_bytes); if (prefix) { - if (!serd_node_equals(&prefix->uri, uri)) { - SerdNode old_prefix_uri = prefix->uri; + if (!serd_node_equals(prefix->uri, uri)) { + SerdNode* old_prefix_uri = prefix->uri; prefix->uri = serd_node_copy(uri); - serd_node_free(&old_prefix_uri); + serd_node_free(old_prefix_uri); } } else { env->prefixes = (SerdPrefix*)realloc( @@ -133,20 +135,20 @@ serd_env_set_prefix(SerdEnv* env, const SerdNode* name, const SerdNode* uri) { - if (!name->buf || uri->type != SERD_URI) { + if (!name || uri->type != SERD_URI) { return SERD_ERR_BAD_ARG; } else if (serd_uri_string_has_scheme(serd_node_string(uri))) { // Set prefix to absolute URI serd_env_add(env, name, uri); } else { // Resolve relative URI and create a new node and URI for it - SerdURI abs_uri; - SerdNode abs_uri_node = serd_node_new_uri_from_node( + SerdURI abs_uri; + SerdNode* abs_uri_node = serd_node_new_uri_from_node( uri, &env->base_uri, &abs_uri); // Set prefix to resolved (absolute) URI - serd_env_add(env, name, &abs_uri_node); - serd_node_free(&abs_uri_node); + serd_env_add(env, name, abs_uri_node); + serd_node_free(abs_uri_node); } return SERD_SUCCESS; } @@ -156,20 +158,24 @@ serd_env_set_prefix_from_strings(SerdEnv* env, const char* name, const char* uri) { - const SerdNode name_node = serd_node_from_string(SERD_LITERAL, name); - const SerdNode uri_node = serd_node_from_string(SERD_URI, uri); + SerdNode* name_node = serd_node_new_string(SERD_LITERAL, name); + SerdNode* uri_node = serd_node_new_string(SERD_URI, uri); + + const SerdStatus st = serd_env_set_prefix(env, name_node, uri_node); - return serd_env_set_prefix(env, &name_node, &uri_node); + serd_node_free(name_node); + serd_node_free(uri_node); + return st; } bool -serd_env_qualify(const SerdEnv* env, - const SerdNode* uri, - SerdNode* prefix, - SerdStringView* suffix) +serd_env_qualify(const SerdEnv* env, + const SerdNode* uri, + const SerdNode** prefix, + SerdStringView* suffix) { for (size_t i = 0; i < env->n_prefixes; ++i) { - const SerdNode* const prefix_uri = &env->prefixes[i].uri; + const SerdNode* const prefix_uri = env->prefixes[i].uri; if (uri->n_bytes >= prefix_uri->n_bytes) { const char* prefix_str = serd_node_string(prefix_uri); const char* uri_str = serd_node_string(uri); @@ -200,8 +206,8 @@ serd_env_expand(const SerdEnv* env, const size_t name_len = (size_t)(colon - str); const SerdPrefix* const prefix = serd_env_find(env, str, name_len); if (prefix) { - uri_prefix->buf = serd_node_string(&prefix->uri); - uri_prefix->len = prefix->uri.n_bytes; + uri_prefix->buf = serd_node_string(prefix->uri); + uri_prefix->len = prefix->uri->n_bytes; uri_suffix->buf = colon + 1; uri_suffix->len = curie->n_bytes - name_len - 1; return SERD_SUCCESS; @@ -209,7 +215,7 @@ serd_env_expand(const SerdEnv* env, return SERD_ERR_BAD_CURIE; } -SerdNode +SerdNode* serd_env_expand_node(const SerdEnv* env, const SerdNode* node) { @@ -225,18 +231,19 @@ serd_env_expand_node(const SerdEnv* env, SerdStringView prefix; SerdStringView suffix; if (serd_env_expand(env, node, &prefix, &suffix)) { - return SERD_NODE_NULL; + return NULL; } const size_t len = prefix.len + suffix.len; - char* buf = (char*)malloc(len + 1); - SerdNode ret = { buf, len, 0, SERD_URI }; - snprintf(buf, ret.n_bytes + 1, "%s%s", prefix.buf, suffix.buf); + SerdNode* ret = serd_node_malloc(len, 0, SERD_URI); + char* buf = serd_node_buffer(ret); + snprintf(buf, len + 1, "%s%s", prefix.buf, suffix.buf); + ret->n_bytes = len; return ret; } case SERD_BLANK: break; } - return SERD_NODE_NULL; + return NULL; } void @@ -245,6 +252,6 @@ serd_env_foreach(const SerdEnv* env, void* handle) { for (size_t i = 0; i < env->n_prefixes; ++i) { - func(handle, &env->prefixes[i].name, &env->prefixes[i].uri); + func(handle, env->prefixes[i].name, env->prefixes[i].uri); } } diff --git a/src/node.c b/src/node.c index 289e5b51..3bf013c4 100644 --- a/src/node.c +++ b/src/node.c @@ -38,53 +38,79 @@ # endif #endif -SerdNode -serd_node_from_string(SerdType type, const char* str) +SerdNode* +serd_node_malloc(size_t n_bytes, SerdNodeFlags flags, SerdType type) +{ + SerdNode* node = (SerdNode*)calloc(1, sizeof(SerdNode) + n_bytes + 1); + node->n_bytes = 0; + node->flags = flags; + node->type = type; + return node; +} + +void +serd_node_set(SerdNode** dst, const SerdNode* src) +{ + if (src) { + if (!(*dst) || (*dst)->n_bytes < src->n_bytes) { + (*dst) = (SerdNode*)realloc(*dst, sizeof(SerdNode) + src->n_bytes + 1); + } + + memcpy(*dst, src, sizeof(SerdNode) + src->n_bytes + 1); + } else if (*dst) { + memset(*dst, 0, sizeof(SerdNode)); + } +} + +SerdNode* +serd_node_new_string(SerdType type, const char* str) { if (!str) { - return SERD_NODE_NULL; + return NULL; } - SerdNodeFlags flags = 0; - const size_t n_bytes = serd_strlen(str, &flags); - const SerdNode ret = {str, n_bytes, flags, type}; - return ret; + SerdNodeFlags flags = 0; + const size_t n_bytes = serd_strlen(str, &flags); + SerdNode* node = serd_node_malloc(n_bytes, flags, type); + memcpy(serd_node_buffer(node), str, n_bytes); + node->n_bytes = n_bytes; + return node; } -SerdNode -serd_node_from_substring(SerdType type, const char* str, const size_t len) +SerdNode* +serd_node_new_substring(SerdType type, const char* str, const size_t len) { if (!str) { - return SERD_NODE_NULL; + return NULL; } - SerdNodeFlags flags = 0; - const size_t n_bytes = serd_substrlen(str, len, &flags); - const SerdNode ret = {str, n_bytes, flags, type}; - return ret; + SerdNodeFlags flags = 0; + const size_t n_bytes = serd_substrlen(str, len, &flags); + SerdNode* node = serd_node_malloc(n_bytes, flags, type); + memcpy(serd_node_buffer(node), str, n_bytes); + node->n_bytes = n_bytes; + return node; } -SerdNode +SerdNode* serd_node_copy(const SerdNode* node) { - if (!node || !node->buf) { - return SERD_NODE_NULL; + if (!node) { + return NULL; } - SerdNode copy = *node; - char* buf = (char*)malloc(copy.n_bytes + 1); - memcpy(buf, node->buf, copy.n_bytes + 1); - copy.buf = buf; + const size_t size = sizeof(SerdNode) + node->n_bytes + 1; + SerdNode* copy = (SerdNode*)malloc(size); + memcpy(copy, node, size); return copy; } bool serd_node_equals(const SerdNode* a, const SerdNode* b) { - return (a == b) - || (a->type == b->type - && a->n_bytes == b->n_bytes - && ((a->buf == b->buf) || !memcmp(a->buf, b->buf, a->n_bytes + 1))); + return (a == b) || + (a && b && a->type == b->type && a->n_bytes == b->n_bytes && + !memcmp(serd_node_string(a), serd_node_string(b), a->n_bytes)); } static size_t @@ -113,7 +139,7 @@ string_sink(const void* buf, size_t len, void* stream) return len; } -SerdNode +SerdNode* serd_node_new_uri_from_node(const SerdNode* uri_node, const SerdURI* base, SerdURI* out) @@ -121,17 +147,17 @@ serd_node_new_uri_from_node(const SerdNode* uri_node, const char* uri_str = serd_node_string(uri_node); return (uri_node && uri_node->type == SERD_URI && uri_str) ? serd_node_new_uri_from_string(uri_str, base, out) - : SERD_NODE_NULL; + : NULL; } -SerdNode +SerdNode* serd_node_new_uri_from_string(const char* str, const SerdURI* base, SerdURI* out) { if (!str || str[0] == '\0') { // Empty URI => Base URI, or nothing if no base is given - return base ? serd_node_new_uri(base, NULL, out) : SERD_NODE_NULL; + return base ? serd_node_new_uri(base, NULL, out) : NULL; } SerdURI uri; @@ -158,7 +184,7 @@ is_uri_path_char(const char c) } } -SerdNode +SerdNode* serd_node_new_file_uri(const char* path, const char* hostname, SerdURI* out, @@ -196,15 +222,17 @@ serd_node_new_file_uri(const char* path, } serd_buffer_sink_finish(&buffer); + SerdNode* node = serd_node_new_substring( + SERD_URI, (const char*)buffer.buf, buffer.len); if (out) { - serd_uri_parse((const char*)buffer.buf, out); + serd_uri_parse(serd_node_buffer(node), out); } - return serd_node_from_substring( - SERD_URI, (const char*)buffer.buf, buffer.len); + free(buffer.buf); + return node; } -SerdNode +SerdNode* serd_node_new_uri(const SerdURI* uri, const SerdURI* base, SerdURI* out) { SerdURI abs_uri = *uri; @@ -213,22 +241,21 @@ serd_node_new_uri(const SerdURI* uri, const SerdURI* base, SerdURI* out) } const size_t len = serd_uri_string_length(&abs_uri); - char* buf = (char*)malloc(len + 1); - SerdNode node = { buf, len, 0, SERD_URI }; - char* ptr = buf; + SerdNode* node = serd_node_malloc(len, 0, SERD_URI); + char* ptr = serd_node_buffer(node); const size_t actual_len = serd_uri_serialise(&abs_uri, string_sink, &ptr); - buf[actual_len] = '\0'; - node.n_bytes = actual_len; + serd_node_buffer(node)[actual_len] = '\0'; + node->n_bytes = actual_len; if (out) { - serd_uri_parse(buf, out); // TODO: cleverly avoid double parse + serd_uri_parse(serd_node_buffer(node), out); // TODO: avoid double parse } return node; } -SerdNode +SerdNode* serd_node_new_relative_uri(const SerdURI* uri, const SerdURI* base, const SerdURI* root, @@ -236,17 +263,16 @@ serd_node_new_relative_uri(const SerdURI* uri, { const size_t uri_len = serd_uri_string_length(uri); const size_t base_len = serd_uri_string_length(base); - char* buf = (char*)malloc(uri_len + base_len + 1); - SerdNode node = { buf, 0, 0, SERD_URI }; - char* ptr = buf; + SerdNode* node = serd_node_malloc(uri_len + base_len, 0, SERD_URI); + char* ptr = serd_node_buffer(node); const size_t actual_len = serd_uri_serialise_relative( uri, base, root, string_sink, &ptr); - buf[actual_len] = '\0'; - node.n_bytes = actual_len; + serd_node_buffer(node)[actual_len] = '\0'; + node->n_bytes = actual_len; if (out) { - serd_uri_parse(buf, out); // TODO: cleverly avoid double parse + serd_uri_parse(serd_node_buffer(node), out); // TODO: avoid double parse } return node; @@ -259,18 +285,19 @@ serd_digits(double abs) return lg < 1.0 ? 1U : (unsigned)lg; } -SerdNode +SerdNode* serd_node_new_decimal(double d, unsigned frac_digits) { if (isnan(d) || isinf(d)) { - return SERD_NODE_NULL; + return NULL; } - const double abs_d = fabs(d); - const unsigned int_digits = serd_digits(abs_d); - char* buf = (char*)calloc(int_digits + frac_digits + 3, 1); - SerdNode node = { buf, 0, 0, SERD_LITERAL }; - const double int_part = floor(abs_d); + const double abs_d = fabs(d); + const unsigned int_digits = serd_digits(abs_d); + const size_t len = int_digits + frac_digits + 3; + SerdNode* const node = serd_node_malloc(len, 0, SERD_LITERAL); + char* const buf = serd_node_buffer(node); + const double int_part = floor(abs_d); // Point s to decimal point location char* s = buf + int_digits; @@ -286,13 +313,14 @@ serd_node_new_decimal(double d, unsigned frac_digits) *t-- = (char)('0' + dec % 10); } while ((dec /= 10) > 0); + *s++ = '.'; // Write fractional part (right to left) double frac_part = fabs(d - int_part); if (frac_part < DBL_EPSILON) { *s++ = '0'; - node.n_bytes = (size_t)(s - buf); + node->n_bytes = (size_t)(s - buf); } else { uint64_t frac = (uint64_t)llround(frac_part * pow(10.0, (int)frac_digits)); s += frac_digits - 1; @@ -301,7 +329,7 @@ serd_node_new_decimal(double d, unsigned frac_digits) // Skip trailing zeros for (; i < frac_digits - 1 && !(frac % 10); ++i, --s, frac /= 10) {} - node.n_bytes = (size_t)(s - buf) + 1u; + node->n_bytes = (size_t)(s - buf) + 1u; // Write digits from last trailing zero to decimal point for (; i < frac_digits; ++i) { @@ -313,13 +341,13 @@ serd_node_new_decimal(double d, unsigned frac_digits) return node; } -SerdNode +SerdNode* serd_node_new_integer(int64_t i) { int64_t abs_i = (i < 0) ? -i : i; const unsigned digits = serd_digits((double)abs_i); - char* buf = (char*)calloc(digits + 2, 1); - SerdNode node = { (const char*)buf, 0, 0, SERD_LITERAL }; + SerdNode* node = serd_node_malloc(digits + 2, 0, SERD_LITERAL); + char* buf = serd_node_buffer(node); // Point s to the end char* s = buf + digits - 1; @@ -328,7 +356,7 @@ serd_node_new_integer(int64_t i) ++s; } - node.n_bytes = (size_t)(s - buf) + 1u; + node->n_bytes = (size_t)(s - buf) + 1u; // Write integer part (right to left) do { @@ -338,16 +366,22 @@ serd_node_new_integer(int64_t i) return node; } -SerdNode +SerdNode* serd_node_new_blob(const void* buf, size_t size, bool wrap_lines) { + if (!buf || !size) { + return NULL; + } + const size_t len = serd_base64_get_length(size, wrap_lines); - uint8_t* str = (uint8_t*)calloc(len + 2, 1); - SerdNode node = {(const char*)str, len, 0, SERD_LITERAL}; + SerdNode* node = serd_node_malloc(len + 1, 0, SERD_LITERAL); + uint8_t* str = (uint8_t*)serd_node_buffer(node); if (serd_base64_encode(str, buf, size, wrap_lines)) { - node.flags |= SERD_HAS_NEWLINE; + node->flags |= SERD_HAS_NEWLINE; } + + node->n_bytes = len; return node; } @@ -360,7 +394,7 @@ serd_node_type(const SerdNode* node) const char* serd_node_string(const SerdNode* node) { - return node ? node->buf : NULL; + return node ? (const char*)(node + 1) : NULL; } size_t @@ -378,8 +412,5 @@ serd_node_flags(const SerdNode* node) void serd_node_free(SerdNode* node) { - if (node && node->buf) { - free((char*)node->buf); - node->buf = NULL; - } + free(node); } diff --git a/src/reader.c b/src/reader.c index 70fc8eb2..eef4d95b 100644 --- a/src/reader.c +++ b/src/reader.c @@ -42,9 +42,11 @@ void set_blank_id(SerdReader* reader, Ref ref, size_t buf_size) { SerdNode* node = deref(reader, ref); + char* buf = (char*)(node + 1); const char* prefix = reader->bprefix ? (const char*)reader->bprefix : ""; - node->n_bytes = (size_t)snprintf( - (char*)node->buf, buf_size, "%sb%u", prefix, reader->next_id++); + + node->n_bytes = + (size_t)snprintf(buf, buf_size, "%sb%u", prefix, reader->next_id++); } size_t @@ -88,7 +90,6 @@ push_node_padded(SerdReader* reader, size_t maxlen, node->n_bytes = n_bytes; node->flags = 0; node->type = type; - node->buf = NULL; char* buf = (char*)(node + 1); memcpy(buf, str, n_bytes + 1); @@ -110,12 +111,7 @@ push_node(SerdReader* reader, SerdType type, const char* str, size_t n_bytes) SerdNode* deref(SerdReader* reader, const Ref ref) { - if (ref) { - SerdNode* node = (SerdNode*)(reader->stack.buf + ref); - node->buf = (char*)node + sizeof(SerdNode); - return node; - } - return NULL; + return ref ? (SerdNode*)(reader->stack.buf + ref) : NULL; } Ref @@ -138,8 +134,8 @@ SerdStatus emit_statement(SerdReader* reader, ReadContext ctx, Ref o, Ref d, Ref l) { SerdNode* graph = deref(reader, ctx.graph); - if (!graph && reader->default_graph.buf) { - graph = &reader->default_graph; + if (!graph && reader->default_graph) { + graph = reader->default_graph; } const SerdStatus st = @@ -187,7 +183,7 @@ serd_reader_new(SerdSyntax syntax, me->prefix_sink = prefix_sink; me->statement_sink = statement_sink; me->end_sink = end_sink; - me->default_graph = SERD_NODE_NULL; + me->default_graph = NULL; me->stack = serd_stack_new(SERD_PAGE_SIZE); me->syntax = syntax; me->next_id = 1; @@ -225,7 +221,7 @@ serd_reader_free(SerdReader* reader) pop_node(reader, reader->rdf_nil); pop_node(reader, reader->rdf_rest); pop_node(reader, reader->rdf_first); - serd_node_free(&reader->default_graph); + serd_node_free(reader->default_graph); #ifdef SERD_STACK_CHECK free(reader->allocs); @@ -262,7 +258,7 @@ void serd_reader_set_default_graph(SerdReader* reader, const SerdNode* graph) { - serd_node_free(&reader->default_graph); + serd_node_free(reader->default_graph); reader->default_graph = serd_node_copy(graph); } diff --git a/src/reader.h b/src/reader.h index 19e27993..dbe4350d 100644 --- a/src/reader.h +++ b/src/reader.h @@ -18,6 +18,7 @@ #define SERD_READER_H #include "byte_source.h" +#include "node.h" #include "stack.h" #include "serd/serd.h" @@ -67,7 +68,7 @@ struct SerdReaderImpl { Ref rdf_first; Ref rdf_rest; Ref rdf_nil; - SerdNode default_graph; + SerdNode* default_graph; SerdByteSource source; SerdStack stack; SerdSyntax syntax; diff --git a/src/serdi.c b/src/serdi.c index ed87bdfd..38646a67 100644 --- a/src/serdi.c +++ b/src/serdi.c @@ -258,8 +258,8 @@ main(int argc, char** argv) : SERD_NQUADS); } - SerdURI base_uri = SERD_URI_NULL; - SerdNode base = SERD_NODE_NULL; + SerdURI base_uri = SERD_URI_NULL; + SerdNode* base = NULL; if (a < argc) { // Base URI given on command line base = serd_node_new_uri_from_string( (const char*)argv[a], NULL, &base_uri); @@ -268,7 +268,7 @@ main(int argc, char** argv) } FILE* out_fd = stdout; - SerdEnv* env = serd_env_new(&base); + SerdEnv* env = serd_env_new(base); int output_style = 0; if (output_syntax == SERD_NTRIPLES || ascii) { @@ -307,10 +307,11 @@ main(int argc, char** argv) serd_writer_set_error_sink(writer, quiet_error_sink, NULL); } - SerdNode root = serd_node_from_string(SERD_URI, root_uri); - serd_writer_set_root_uri(writer, &root); + SerdNode* root = serd_node_new_string(SERD_URI, root_uri); + serd_writer_set_root_uri(writer, root); serd_writer_chop_blank_prefix(writer, chop_prefix); serd_reader_add_blank_prefix(reader, add_prefix); + serd_node_free(root); SerdStatus st = SERD_SUCCESS; if (!from_file) { @@ -329,7 +330,7 @@ main(int argc, char** argv) serd_writer_finish(writer); serd_writer_free(writer); serd_env_free(env); - serd_node_free(&base); + serd_node_free(base); if (from_file) { fclose(in_fd); diff --git a/src/writer.c b/src/writer.c index ccf5e107..c3ccffb2 100644 --- a/src/writer.c +++ b/src/writer.c @@ -15,6 +15,7 @@ */ #include "byte_sink.h" +#include "node.h" #include "serd_internal.h" #include "stack.h" #include "string_utils.h" @@ -39,16 +40,12 @@ typedef enum { } Field; typedef struct { - SerdNode graph; - SerdNode subject; - SerdNode predicate; + SerdNode* graph; + SerdNode* subject; + SerdNode* predicate; } WriteContext; -static const WriteContext WRITE_CONTEXT_NULL = { - { 0, 0, 0, SERD_NOTHING }, - { 0, 0, 0, SERD_NOTHING }, - { 0, 0, 0, SERD_NOTHING } -}; +static const WriteContext WRITE_CONTEXT_NULL = { NULL, NULL, NULL }; typedef enum { SEP_NONE, @@ -99,7 +96,7 @@ struct SerdWriterImpl { SerdSyntax syntax; SerdStyle style; SerdEnv* env; - SerdNode root_node; + SerdNode* root_node; SerdURI root_uri; SerdURI base_uri; SerdStack anon_stack; @@ -107,7 +104,7 @@ struct SerdWriterImpl { SerdErrorSink error_sink; void* error_handle; WriteContext context; - SerdNode list_subj; + SerdNode* list_subj; unsigned list_depth; unsigned indent; char* bprefix; @@ -159,18 +156,19 @@ anon_stack_top(SerdWriter* writer) + writer->anon_stack.size - sizeof(WriteContext)); } -static void -copy_node(SerdNode* dst, const SerdNode* src) +static inline SerdNode* +ctx(SerdWriter* writer, const Field field) { - if (src) { - dst->buf = (char*)realloc((char*)dst->buf, src->n_bytes + 1); - dst->n_bytes = src->n_bytes; - dst->flags = src->flags; - dst->type = src->type; - memcpy((char*)dst->buf, src->buf, src->n_bytes + 1); - } else { - dst->type = SERD_NOTHING; + SerdNode* node = NULL; + if (field == FIELD_SUBJECT) { + node = writer->context.subject; + } else if (field == FIELD_PREDICATE) { + node = writer->context.predicate; + } else if (field == FIELD_GRAPH) { + node = writer->context.graph; } + + return node && node->type ? node : NULL; } static inline size_t @@ -414,22 +412,26 @@ write_sep(SerdWriter* writer, const Sep sep) static SerdStatus reset_context(SerdWriter* writer, bool graph) { - if (graph) { - writer->context.graph.type = SERD_NOTHING; + if (graph && writer->context.graph) { + memset(writer->context.graph, 0, sizeof(SerdNode)); + } + if (writer->context.subject) { + memset(writer->context.subject, 0, sizeof(SerdNode)); } - writer->context.subject.type = SERD_NOTHING; - writer->context.predicate.type = SERD_NOTHING; - writer->empty = false; + if (writer->context.predicate) { + memset(writer->context.predicate, 0, sizeof(SerdNode)); + } + writer->empty = false; return SERD_SUCCESS; } static SerdStatus free_context(SerdWriter* writer) { - serd_node_free(&writer->context.graph); - serd_node_free(&writer->context.subject); - serd_node_free(&writer->context.predicate); - return reset_context(writer, true); + serd_node_free(writer->context.graph); + serd_node_free(writer->context.subject); + serd_node_free(writer->context.predicate); + return SERD_SUCCESS; } static bool @@ -507,8 +509,8 @@ write_uri_node(SerdWriter* const writer, const Field field, const SerdStatementFlags flags) { - SerdNode prefix; - SerdStringView suffix; + const SerdNode* prefix = NULL; + SerdStringView suffix = {NULL, 0}; if (is_inline_start(writer, field, flags)) { ++writer->indent; @@ -526,7 +528,7 @@ write_uri_node(SerdWriter* const writer, } else if (has_scheme && (writer->style & SERD_STYLE_CURIED) && serd_env_qualify(writer->env, node, &prefix, &suffix) && is_name(suffix.buf, suffix.len)) { - write_uri_from_node(writer, &prefix); + write_uri_from_node(writer, prefix); sink(":", 1, writer); write_uri(writer, suffix.buf, suffix.len); return true; @@ -613,7 +615,7 @@ write_blank(SerdWriter* const writer, return write_sep(writer, SEP_ANON_BEGIN); } else if (field == FIELD_SUBJECT && (flags & SERD_LIST_S_BEGIN)) { assert(writer->list_depth == 0); - copy_node(&writer->list_subj, node); + serd_node_set(&writer->list_subj, node); ++writer->list_depth; ++writer->indent; return write_sep(writer, SEP_LIST_BEGIN); @@ -680,7 +682,7 @@ write_pred(SerdWriter* writer, SerdStatementFlags flags, const SerdNode* pred) { write_node(writer, pred, NULL, NULL, FIELD_PREDICATE, flags); write_sep(writer, SEP_P_O); - copy_node(&writer->context.predicate, pred); + serd_node_set(&writer->context.predicate, pred); } static bool @@ -712,9 +714,8 @@ serd_writer_write_statement(SerdWriter* writer, const SerdNode* datatype, const SerdNode* lang) { - if (!subject || !predicate || !object - || !subject->buf || !predicate->buf || !object->buf - || !is_resource(subject) || !is_resource(predicate)) { + if (!subject || !predicate || !object || + !is_resource(subject) || !is_resource(predicate)) { return SERD_ERR_BAD_ARG; } @@ -739,13 +740,13 @@ serd_writer_write_statement(SerdWriter* writer, return SERD_SUCCESS; } - if ((graph && !serd_node_equals(graph, &writer->context.graph)) || - (!graph && writer->context.graph.type)) { + if ((graph && !serd_node_equals(graph, writer->context.graph)) || + (!graph && ctx(writer, FIELD_GRAPH))) { writer->indent = 0; - if (writer->context.subject.type) { + if (ctx(writer, FIELD_SUBJECT)) { write_sep(writer, SEP_END_S); } - if (writer->context.graph.type) { + if (ctx(writer, FIELD_GRAPH)) { write_sep(writer, SEP_GRAPH_END); } @@ -754,23 +755,23 @@ serd_writer_write_statement(SerdWriter* writer, TRY(write_node(writer, graph, datatype, lang, FIELD_GRAPH, flags)); ++writer->indent; write_sep(writer, SEP_GRAPH_BEGIN); - copy_node(&writer->context.graph, graph); + serd_node_set(&writer->context.graph, graph); } } if ((flags & SERD_LIST_CONT)) { if (write_list_obj(writer, flags, predicate, object, datatype, lang)) { // Reached end of list - if (--writer->list_depth == 0 && writer->list_subj.type) { + if (--writer->list_depth == 0 && writer->list_subj) { reset_context(writer, false); - serd_node_free(&writer->context.subject); + serd_node_free(writer->context.subject); writer->context.subject = writer->list_subj; - writer->list_subj = SERD_NODE_NULL; + writer->list_subj = NULL; } return SERD_SUCCESS; } - } else if (serd_node_equals(subject, &writer->context.subject)) { - if (serd_node_equals(predicate, &writer->context.predicate)) { + } else if (serd_node_equals(subject, writer->context.subject)) { + if (serd_node_equals(predicate, writer->context.predicate)) { // Abbreviate S P if (!(flags & SERD_ANON_O_BEGIN)) { ++writer->indent; @@ -782,14 +783,14 @@ serd_writer_write_statement(SerdWriter* writer, } } else { // Abbreviate S - Sep sep = writer->context.predicate.type ? SEP_END_P : SEP_S_P; + Sep sep = ctx(writer, FIELD_PREDICATE) ? SEP_END_P : SEP_S_P; write_sep(writer, sep); write_pred(writer, flags, predicate); write_node(writer, object, datatype, lang, FIELD_OBJECT, flags); } } else { // No abbreviation - if (writer->context.subject.type) { + if (ctx(writer, FIELD_SUBJECT)) { assert(writer->indent > 0); --writer->indent; if (serd_stack_is_empty(&writer->anon_stack)) { @@ -808,7 +809,7 @@ serd_writer_write_statement(SerdWriter* writer, } reset_context(writer, false); - copy_node(&writer->context.subject, subject); + serd_node_set(&writer->context.subject, subject); if (!(flags & SERD_LIST_S_BEGIN)) { write_pred(writer, flags, predicate); @@ -822,15 +823,15 @@ serd_writer_write_statement(SerdWriter* writer, &writer->anon_stack, sizeof(WriteContext)); *ctx = writer->context; WriteContext new_context = { - serd_node_copy(graph), serd_node_copy(subject), SERD_NODE_NULL }; + serd_node_copy(graph), serd_node_copy(subject), NULL }; if ((flags & SERD_ANON_S_BEGIN)) { new_context.predicate = serd_node_copy(predicate); } writer->context = new_context; } else { - copy_node(&writer->context.graph, graph); - copy_node(&writer->context.subject, subject); - copy_node(&writer->context.predicate, predicate); + serd_node_set(&writer->context.graph, graph); + serd_node_set(&writer->context.subject, subject); + serd_node_set(&writer->context.predicate, predicate); } return SERD_SUCCESS; @@ -853,10 +854,10 @@ serd_writer_end_anon(SerdWriter* writer, free_context(writer); writer->context = *anon_stack_top(writer); serd_stack_pop(&writer->anon_stack, sizeof(WriteContext)); - const bool is_subject = serd_node_equals(node, &writer->context.subject); + const bool is_subject = serd_node_equals(node, writer->context.subject); if (is_subject) { - copy_node(&writer->context.subject, node); - writer->context.predicate.type = SERD_NOTHING; + serd_node_set(&writer->context.subject, node); + memset(writer->context.predicate, 0, sizeof(SerdNode)); } return SERD_SUCCESS; } @@ -864,15 +865,17 @@ serd_writer_end_anon(SerdWriter* writer, SerdStatus serd_writer_finish(SerdWriter* writer) { - if (writer->context.subject.type) { + if (ctx(writer, FIELD_SUBJECT)) { write_sep(writer, SEP_END_S); } - if (writer->context.graph.type) { + if (ctx(writer, FIELD_GRAPH)) { write_sep(writer, SEP_GRAPH_END); } serd_byte_sink_flush(&writer->byte_sink); - writer->indent = 0; - return free_context(writer); + free_context(writer); + writer->indent = 0; + writer->context = WRITE_CONTEXT_NULL; + return SERD_SUCCESS; } SerdWriter* @@ -888,12 +891,12 @@ serd_writer_new(SerdSyntax syntax, writer->syntax = syntax; writer->style = style; writer->env = env; - writer->root_node = SERD_NODE_NULL; + writer->root_node = NULL; writer->root_uri = SERD_URI_NULL; writer->base_uri = base_uri ? *base_uri : SERD_URI_NULL; writer->anon_stack = serd_stack_new(4 * sizeof(WriteContext)); writer->context = context; - writer->list_subj = SERD_NODE_NULL; + writer->list_subj = NULL; writer->empty = true; writer->byte_sink = serd_byte_sink_new( ssink, stream, (style & SERD_STYLE_BULK) ? SERD_PAGE_SIZE : 1); @@ -931,7 +934,7 @@ serd_writer_set_base_uri(SerdWriter* writer, serd_env_base_uri(writer->env, &writer->base_uri); if (writer->syntax == SERD_TURTLE || writer->syntax == SERD_TRIG) { - if (writer->context.graph.type || writer->context.subject.type) { + if (ctx(writer, FIELD_GRAPH) || ctx(writer, FIELD_SUBJECT)) { sink(" .\n\n", 4, writer); reset_context(writer, true); } @@ -949,12 +952,12 @@ SerdStatus serd_writer_set_root_uri(SerdWriter* writer, const SerdNode* uri) { - serd_node_free(&writer->root_node); - if (uri && uri->buf) { + serd_node_free(writer->root_node); + if (uri) { writer->root_node = serd_node_copy(uri); - serd_uri_parse(serd_node_string(uri), &writer->root_uri); + serd_uri_parse(serd_node_string(writer->root_node), &writer->root_uri); } else { - writer->root_node = SERD_NODE_NULL; + writer->root_node = NULL; writer->root_uri = SERD_URI_NULL; } return SERD_SUCCESS; @@ -967,7 +970,7 @@ serd_writer_set_prefix(SerdWriter* writer, { if (!serd_env_set_prefix(writer->env, name, uri)) { if (writer->syntax == SERD_TURTLE || writer->syntax == SERD_TRIG) { - if (writer->context.graph.type || writer->context.subject.type) { + if (ctx(writer, FIELD_GRAPH) || ctx(writer, FIELD_SUBJECT)) { sink(" .\n\n", 4, writer); reset_context(writer, true); } @@ -994,7 +997,7 @@ serd_writer_free(SerdWriter* writer) serd_stack_free(&writer->anon_stack); free(writer->bprefix); serd_byte_sink_free(&writer->byte_sink); - serd_node_free(&writer->root_node); + serd_node_free(writer->root_node); free(writer); } -- cgit v1.2.1