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-rw-r--r--src/n3.c107
1 files changed, 49 insertions, 58 deletions
diff --git a/src/n3.c b/src/n3.c
index 84816f49..e358ac08 100644
--- a/src/n3.c
+++ b/src/n3.c
@@ -319,7 +319,7 @@ read_STRING_LITERAL_LONG(SerdReader* reader, SerdNodeFlags* flags, uint8_t q)
read_UCHAR(reader, ref, &code)) {
r_err(reader, SERD_ERR_BAD_SYNTAX,
"invalid escape `\\%c'\n", peek_byte(reader));
- return pop_node(reader, ref);
+ return NULL;
}
} else if (c == q) {
eat_byte_safe(reader, q);
@@ -334,7 +334,7 @@ read_STRING_LITERAL_LONG(SerdReader* reader, SerdNodeFlags* flags, uint8_t q)
st = read_character(reader, ref, flags, (uint8_t)q2);
} else if (c == EOF) {
r_err(reader, SERD_ERR_BAD_SYNTAX, "end of file in long string\n");
- return pop_node(reader, ref);
+ return NULL;
} else {
st = read_character(
reader, ref, flags, (uint8_t)eat_byte_safe(reader, c));
@@ -357,17 +357,17 @@ read_STRING_LITERAL(SerdReader* reader, SerdNodeFlags* flags, uint8_t q)
switch (c) {
case EOF:
r_err(reader, SERD_ERR_BAD_SYNTAX, "end of file in short string\n");
- return pop_node(reader, ref);
+ return NULL;
case '\n': case '\r':
r_err(reader, SERD_ERR_BAD_SYNTAX, "line end in short string\n");
- return pop_node(reader, ref);
+ return NULL;
case '\\':
eat_byte_safe(reader, c);
if (read_ECHAR(reader, ref, flags) &&
read_UCHAR(reader, ref, &code)) {
r_err(reader, SERD_ERR_BAD_SYNTAX,
"invalid escape `\\%c'\n", peek_byte(reader));
- return pop_node(reader, ref);
+ return NULL;
}
break;
default:
@@ -383,14 +383,10 @@ read_STRING_LITERAL(SerdReader* reader, SerdNodeFlags* flags, uint8_t q)
if (st) {
reader->status = st;
- return pop_node(reader, ref);
- }
-
- if (!eat_byte_check(reader, q)) {
- return pop_node(reader, ref);
+ return NULL;
}
- return ref;
+ return eat_byte_check(reader, q) ? ref : NULL;
}
static SerdNode*
@@ -655,7 +651,7 @@ read_IRIREF(SerdReader* reader)
TRY_RET(eat_byte_check(reader, '<'));
SerdNode* ref = push_node(reader, SERD_URI, "", 0);
if (!ref || (!fancy_syntax(reader) && !read_IRIREF_scheme(reader, ref))) {
- return pop_node(reader, ref);
+ return NULL;
}
SerdStatus st = SERD_SUCCESS;
@@ -666,19 +662,19 @@ read_IRIREF(SerdReader* reader)
case '"': case '<': case '^': case '`': case '{': case '|': case '}':
r_err(reader, SERD_ERR_BAD_SYNTAX,
"invalid IRI character `%c'\n", c);
- return pop_node(reader, ref);
+ return NULL;
case '>':
return ref;
case '\\':
if (read_UCHAR(reader, ref, &code)) {
r_err(reader, SERD_ERR_BAD_SYNTAX, "invalid IRI escape\n");
- return pop_node(reader, ref);
+ return NULL;
}
switch (code) {
case 0: case ' ': case '<': case '>':
r_err(reader, SERD_ERR_BAD_SYNTAX,
"invalid escaped IRI character %X %c\n", code, code);
- return pop_node(reader, ref);
+ return NULL;
}
break;
default:
@@ -693,7 +689,7 @@ read_IRIREF(SerdReader* reader)
(unsigned)c);
}
if (reader->strict) {
- return pop_node(reader, ref);
+ return NULL;
}
reader->status = SERD_FAILURE;
push_byte(reader, ref, c);
@@ -701,13 +697,12 @@ read_IRIREF(SerdReader* reader)
push_byte(reader, ref, c);
} else if ((st = read_utf8_character(reader, ref, (uint8_t)c))) {
if (reader->strict) {
- reader->status = SERD_FAILURE;
- return pop_node(reader, ref);
+ return NULL;
}
}
}
}
- return pop_node(reader, ref);
+ return NULL;
}
static bool
@@ -804,8 +799,6 @@ read_number(SerdReader* reader,
*dest = ref;
return true;
except:
- pop_node(reader, *datatype);
- pop_node(reader, ref);
return r_err(reader, SERD_ERR_BAD_SYNTAX, "bad number syntax\n");
}
@@ -853,15 +846,15 @@ read_literal(SerdReader* reader,
*dest = str;
return true;
except:
- *datatype = pop_node(reader, *datatype);
- *lang = pop_node(reader, *lang);
- pop_node(reader, str);
+ *datatype = NULL;
+ *lang = NULL;
return r_err(reader, SERD_ERR_BAD_SYNTAX, "bad literal syntax\n");
}
static bool
read_verb(SerdReader* reader, SerdNode** dest)
{
+ const size_t orig_stack_size = reader->stack.size;
if (peek_byte(reader) == '<') {
return (*dest = read_IRIREF(reader));
}
@@ -880,12 +873,12 @@ read_verb(SerdReader* reader, SerdNode** dest)
if (!st && node->n_bytes == 1 &&
serd_node_get_string(node)[0] == 'a' &&
next != ':' && !is_PN_CHARS_BASE((uint32_t)next)) {
- pop_node(reader, *dest);
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return (*dest = push_node(reader, SERD_URI, NS_RDF "type", 47));
} else if (st > SERD_FAILURE ||
!read_PrefixedName(reader, *dest, false, &ate_dot) ||
ate_dot) {
- *dest = pop_node(reader, *dest);
+ *dest = NULL;
return r_err(reader, SERD_ERR_BAD_SYNTAX, "bad verb\n");
}
@@ -909,7 +902,7 @@ read_BLANK_NODE_LABEL(SerdReader* reader, bool* ate_dot)
push_byte(reader, n, eat_byte_safe(reader, c));
} else if (read_PN_CHARS(reader, n)) {
r_err(reader, SERD_ERR_BAD_SYNTAX, "invalid name start character\n");
- return pop_node(reader, n);
+ return NULL;
}
while ((c = peek_byte(reader))) { // Middle: (PN_CHARS | '.')*
@@ -936,7 +929,7 @@ read_BLANK_NODE_LABEL(SerdReader* reader, bool* ate_dot)
} else if (reader->seen_genid && buf[reader->bprefix_len] == 'B') {
r_err(reader, SERD_ERR_ID_CLASH,
"found both `b' and `B' blank IDs, prefix required\n");
- return pop_node(reader, n);
+ return NULL;
}
}
}
@@ -1013,9 +1006,7 @@ read_object(SerdReader* reader, ReadContext* ctx, bool emit, bool* ate_dot)
static const char* const XSD_BOOLEAN = NS_XSD "boolean";
static const size_t XSD_BOOLEAN_LEN = 40;
-#ifndef NDEBUG
const size_t orig_stack_size = reader->stack.size;
-#endif
bool ret = false;
bool simple = (ctx->subject != 0);
@@ -1094,9 +1085,7 @@ read_object(SerdReader* reader, ReadContext* ctx, bool emit, bool* ate_dot)
}
except:
- pop_node(reader, lang);
- pop_node(reader, datatype);
- pop_node(reader, o);
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
#ifndef NDEBUG
assert(reader->stack.size == orig_stack_size);
#endif
@@ -1121,11 +1110,13 @@ read_objectList(SerdReader* reader, ReadContext ctx, bool* ate_dot)
static bool
read_predicateObjectList(SerdReader* reader, ReadContext ctx, bool* ate_dot)
{
+ const size_t orig_stack_size = reader->stack.size;
+
while (read_verb(reader, &ctx.predicate) &&
read_ws_star(reader) &&
read_objectList(reader, ctx, ate_dot)) {
- ctx.predicate = pop_node(reader, ctx.predicate);
if (*ate_dot) {
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return true;
}
@@ -1135,9 +1126,11 @@ read_predicateObjectList(SerdReader* reader, ReadContext ctx, bool* ate_dot)
read_ws_star(reader);
switch (c = peek_byte(reader)) {
case EOF: case '\0':
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return r_err(reader, SERD_ERR_BAD_SYNTAX,
"unexpected end of file\n");
case '.': case ']': case '}':
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return true;
case ';':
eat_byte_safe(reader, c);
@@ -1146,18 +1139,19 @@ read_predicateObjectList(SerdReader* reader, ReadContext ctx, bool* ate_dot)
} while (c == ';');
if (!ate_semi) {
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return r_err(reader, SERD_ERR_BAD_SYNTAX, "missing ';' or '.'\n");
}
}
- return pop_node(reader, ctx.predicate);
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
+ ctx.predicate = 0;
+ return false;
}
static bool
-end_collection(SerdReader* reader, ReadContext ctx, SerdNode* n1, SerdNode* n2, bool ret)
+end_collection(SerdReader* reader, ReadContext ctx, bool ret)
{
- pop_node(reader, n2);
- pop_node(reader, n1);
*ctx.flags &= ~(unsigned)SERD_LIST_CONT;
return ret && (eat_byte_safe(reader, ')') == ')');
}
@@ -1178,7 +1172,7 @@ read_collection(SerdReader* reader, ReadContext ctx, SerdNode** dest)
}
if (end) {
- return end_collection(reader, ctx, 0, 0, true);
+ return end_collection(reader, ctx, true);
}
/* The order of node allocation here is necessarily not in stack order,
@@ -1198,7 +1192,7 @@ read_collection(SerdReader* reader, ReadContext ctx, SerdNode** dest)
ctx.predicate = reader->rdf_first;
bool ate_dot = false;
if (!read_object(reader, &ctx, true, &ate_dot) || ate_dot) {
- return end_collection(reader, ctx, n1, n2, false);
+ return end_collection(reader, ctx, false);
}
if (!(end = peek_delim(reader, ')'))) {
@@ -1221,7 +1215,7 @@ read_collection(SerdReader* reader, ReadContext ctx, SerdNode** dest)
node = ctx.subject; // invariant
}
- return end_collection(reader, ctx, n1, n2, true);
+ return end_collection(reader, ctx, true);
}
static SerdNode*
@@ -1241,7 +1235,7 @@ read_subject(SerdReader* reader, ReadContext ctx, SerdNode** dest, int* s_type)
default:
TRY_RET(read_iri(reader, dest, &ate_dot));
}
- return ate_dot ? pop_node(reader, *dest) : *dest;
+ return ate_dot ? NULL : *dest;
}
static SerdNode*
@@ -1296,7 +1290,6 @@ read_base(SerdReader* reader, bool sparql, bool token)
} else if (reader->sink->base) {
reader->sink->base(reader->sink->handle, uri);
}
- pop_node(reader, uri);
read_ws_star(reader);
if (!sparql) {
@@ -1321,25 +1314,22 @@ read_prefixID(SerdReader* reader, bool sparql, bool token)
if (!name) {
return false;
} else if (read_PN_PREFIX(reader, name) > SERD_FAILURE) {
- return pop_node(reader, name);
+ return false;
}
if (eat_byte_check(reader, ':') != ':') {
- return pop_node(reader, name);
+ return false;
}
read_ws_star(reader);
const SerdNode* uri = read_IRIREF(reader);
if (!uri) {
- pop_node(reader, name);
return false;
}
if (reader->sink->prefix) {
ret = !reader->sink->prefix(reader->sink->handle, name, uri);
}
- pop_node(reader, uri);
- pop_node(reader, name);
if (!sparql) {
read_ws_star(reader);
return eat_byte_check(reader, '.');
@@ -1376,8 +1366,10 @@ read_wrappedGraph(SerdReader* reader, ReadContext* ctx)
TRY_RET(eat_byte_check(reader, '{'));
read_ws_star(reader);
while (peek_byte(reader) != '}') {
- bool ate_dot = false;
- int s_type = 0;
+ const size_t orig_stack_size = reader->stack.size;
+ bool ate_dot = false;
+ int s_type = 0;
+
ctx->subject = 0;
SerdNode* subj = read_subject(reader, *ctx, &ctx->subject, &s_type);
if (!subj && ctx->subject) {
@@ -1388,7 +1380,7 @@ read_wrappedGraph(SerdReader* reader, ReadContext* ctx)
return r_err(reader, SERD_ERR_BAD_SYNTAX,
"missing predicate object list\n");
}
- pop_node(reader, subj);
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
read_ws_star(reader);
if (peek_byte(reader) == '.') {
eat_byte_safe(reader, '.');
@@ -1447,7 +1439,6 @@ read_n3_statement(SerdReader* reader)
TRY_RET((ctx.graph = read_labelOrSubject(reader)));
read_ws_star(reader);
TRY_RET(read_wrappedGraph(reader, &ctx));
- pop_node(reader, ctx.graph);
ctx.graph = 0;
read_ws_star(reader);
} else if (read_ws_star(reader) && peek_byte(reader) == '{') {
@@ -1458,7 +1449,6 @@ read_n3_statement(SerdReader* reader)
ctx.graph = subj;
ctx.subject = subj = 0;
TRY_RET(read_wrappedGraph(reader, &ctx));
- pop_node(reader, ctx.graph);
read_ws_star(reader);
} else if (!subj) {
ret = r_err(reader, SERD_ERR_BAD_SYNTAX, "bad subject\n");
@@ -1471,7 +1461,6 @@ read_n3_statement(SerdReader* reader)
read_ws_star(reader);
ret = (eat_byte_check(reader, '.') == '.');
}
- pop_node(reader, subj);
break;
}
return ret;
@@ -1489,13 +1478,16 @@ SerdStatus
read_turtleTrigDoc(SerdReader* reader)
{
while (!reader->source.eof) {
+ const size_t orig_stack_size = reader->stack.size;
if (!read_n3_statement(reader)) {
if (reader->strict) {
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
return SERD_ERR_UNKNOWN;
}
skip_until(reader, '\n');
reader->status = SERD_SUCCESS;
}
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
}
return reader->status;
}
@@ -1504,6 +1496,8 @@ SerdStatus
read_nquadsDoc(SerdReader* reader)
{
while (!reader->source.eof) {
+ const size_t orig_stack_size = reader->stack.size;
+
SerdStatementFlags flags = 0;
ReadContext ctx = { 0, 0, 0, 0, 0, 0, &flags };
bool ate_dot = false;
@@ -1549,10 +1543,7 @@ read_nquadsDoc(SerdReader* reader)
break;
}
- pop_node(reader, ctx.graph);
- pop_node(reader, ctx.lang);
- pop_node(reader, ctx.datatype);
- pop_node(reader, ctx.object);
+ serd_stack_pop_to(&reader->stack, orig_stack_size);
}
return reader->status;
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-23 01:57:29 +0000