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authorMarc-André Lureau <marcandre.lureau@redhat.com>2017-06-07 20:36:02 +0400
committerMarkus Armbruster <armbru@redhat.com>2017-06-20 14:31:31 +0200
commit2bc7cfea095dc0ab7fae17e0a620f93ce042cafa (patch)
tree0e436e3079f2083ae1f7f59493f8c0da7f834249 /qobject
parent61a8f418b26a2d974e38e4ae55020aca8d402d88 (diff)
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json: learn to parse uint64 numbers
Switch strtoll() usage to qemu_strtoi64() helper while at it. Add a few tests for large numbers. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170607163635.17635-11-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'qobject')
-rw-r--r--qobject/json-lexer.c4
-rw-r--r--qobject/json-parser.c36
2 files changed, 32 insertions, 8 deletions
diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c
index af4a75e..980ba15 100644
--- a/qobject/json-lexer.c
+++ b/qobject/json-lexer.c
@@ -227,15 +227,18 @@ static const uint8_t json_lexer[][256] = {
/* escape */
[IN_ESCAPE_LL] = {
['d'] = JSON_ESCAPE,
+ ['u'] = JSON_ESCAPE,
},
[IN_ESCAPE_L] = {
['d'] = JSON_ESCAPE,
['l'] = IN_ESCAPE_LL,
+ ['u'] = JSON_ESCAPE,
},
[IN_ESCAPE_I64] = {
['d'] = JSON_ESCAPE,
+ ['u'] = JSON_ESCAPE,
},
[IN_ESCAPE_I6] = {
@@ -251,6 +254,7 @@ static const uint8_t json_lexer[][256] = {
['i'] = JSON_ESCAPE,
['p'] = JSON_ESCAPE,
['s'] = JSON_ESCAPE,
+ ['u'] = JSON_ESCAPE,
['f'] = JSON_ESCAPE,
['l'] = IN_ESCAPE_L,
['I'] = IN_ESCAPE_I,
diff --git a/qobject/json-parser.c b/qobject/json-parser.c
index 5e80828..7a417f2 100644
--- a/qobject/json-parser.c
+++ b/qobject/json-parser.c
@@ -12,6 +12,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "qapi/qmp/types.h"
@@ -472,6 +473,13 @@ static QObject *parse_escape(JSONParserContext *ctxt, va_list *ap)
} else if (!strcmp(token->str, "%lld") ||
!strcmp(token->str, "%I64d")) {
return QOBJECT(qnum_from_int(va_arg(*ap, long long)));
+ } else if (!strcmp(token->str, "%u")) {
+ return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned int)));
+ } else if (!strcmp(token->str, "%lu")) {
+ return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long)));
+ } else if (!strcmp(token->str, "%llu") ||
+ !strcmp(token->str, "%I64u")) {
+ return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long long)));
} else if (!strcmp(token->str, "%s")) {
return QOBJECT(qstring_from_str(va_arg(*ap, const char *)));
} else if (!strcmp(token->str, "%f")) {
@@ -493,21 +501,33 @@ static QObject *parse_literal(JSONParserContext *ctxt)
case JSON_INTEGER: {
/*
* Represent JSON_INTEGER as QNUM_I64 if possible, else as
- * QNUM_DOUBLE. Note that strtoll() fails with ERANGE when
- * it's not possible.
+ * QNUM_U64, else as QNUM_DOUBLE. Note that qemu_strtoi64()
+ * and qemu_strtou64() fail with ERANGE when it's not
+ * possible.
*
* qnum_get_int() will then work for any signed 64-bit
- * JSON_INTEGER, and qnum_get_double() both for any
- * JSON_INTEGER and any JSON_FLOAT (with precision loss for
- * integers beyond 53 bits)
+ * JSON_INTEGER, qnum_get_uint() for any unsigned 64-bit
+ * integer, and qnum_get_double() both for any JSON_INTEGER
+ * and any JSON_FLOAT (with precision loss for integers beyond
+ * 53 bits)
*/
+ int ret;
int64_t value;
+ uint64_t uvalue;
- errno = 0; /* strtoll doesn't set errno on success */
- value = strtoll(token->str, NULL, 10);
- if (errno != ERANGE) {
+ ret = qemu_strtoi64(token->str, NULL, 10, &value);
+ if (!ret) {
return QOBJECT(qnum_from_int(value));
}
+ assert(ret == -ERANGE);
+
+ if (token->str[0] != '-') {
+ ret = qemu_strtou64(token->str, NULL, 10, &uvalue);
+ if (!ret) {
+ return QOBJECT(qnum_from_uint(uvalue));
+ }
+ assert(ret == -ERANGE);
+ }
/* fall through to JSON_FLOAT */
}
case JSON_FLOAT: