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qjson: Give each of the six structural chars its own token type 

Simplifies things, because we always check for a specific one.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-6-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster 2015-11-25 22:23:26 +01:00
parent b8d3b1da3c
commit c54616608a
4 changed files with 42 additions and 47 deletions
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7
include/qapi/qmp/json-lexer.h
View File

@ -19,7 +19,12 @@
typedef enum json_token_type { typedef enum json_token_type {
JSON_MIN = 100, JSON_MIN = 100,
JSON_OPERATOR = JSON_MIN, JSON_LCURLY = JSON_MIN,
JSON_RCURLY,
JSON_LSQUARE,
JSON_RSQUARE,
JSON_COLON,
JSON_COMMA,
JSON_INTEGER, JSON_INTEGER,
JSON_FLOAT, JSON_FLOAT,
JSON_KEYWORD, JSON_KEYWORD,

19
qobject/json-lexer.c
View File

@ -257,12 +257,12 @@ static const uint8_t json_lexer[][256] = {
['0'] = IN_ZERO, ['0'] = IN_ZERO,
['1' ... '9'] = IN_NONZERO_NUMBER, ['1' ... '9'] = IN_NONZERO_NUMBER,
['-'] = IN_NEG_NONZERO_NUMBER, ['-'] = IN_NEG_NONZERO_NUMBER,
['{'] = JSON_OPERATOR, ['{'] = JSON_LCURLY,
['}'] = JSON_OPERATOR, ['}'] = JSON_RCURLY,
['['] = JSON_OPERATOR, ['['] = JSON_LSQUARE,
[']'] = JSON_OPERATOR, [']'] = JSON_RSQUARE,
[','] = JSON_OPERATOR, [','] = JSON_COMMA,
[':'] = JSON_OPERATOR, [':'] = JSON_COLON,
['a' ... 'z'] = IN_KEYWORD, ['a' ... 'z'] = IN_KEYWORD,
['%'] = IN_ESCAPE, ['%'] = IN_ESCAPE,
[' '] = IN_WHITESPACE, [' '] = IN_WHITESPACE,
@ -299,7 +299,12 @@ static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush)
} }
switch (new_state) { switch (new_state) {
case JSON_OPERATOR: case JSON_LCURLY:
case JSON_RCURLY:
case JSON_LSQUARE:
case JSON_RSQUARE:
case JSON_COLON:
case JSON_COMMA:
case JSON_ESCAPE: case JSON_ESCAPE:
case JSON_INTEGER: case JSON_INTEGER:
case JSON_FLOAT: case JSON_FLOAT:

31
qobject/json-parser.c
View File

@ -63,19 +63,6 @@ static JSONTokenType token_get_type(QObject *obj)
return qdict_get_int(qobject_to_qdict(obj), "type"); return qdict_get_int(qobject_to_qdict(obj), "type");
} }
static int token_is_operator(QObject *obj, char op)
{
const char *val;
if (token_get_type(obj) != JSON_OPERATOR) {
return 0;
}
val = token_get_value(obj);
return (val[0] == op) && (val[1] == 0);
}
static int token_is_keyword(QObject *obj, const char *value) static int token_is_keyword(QObject *obj, const char *value)
{ {
if (token_get_type(obj) != JSON_KEYWORD) { if (token_get_type(obj) != JSON_KEYWORD) {
@ -384,7 +371,7 @@ static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap)
goto out; goto out;
} }
if (!token_is_operator(token, ':')) { if (token_get_type(token) != JSON_COLON) {
parse_error(ctxt, token, "missing : in object pair"); parse_error(ctxt, token, "missing : in object pair");
goto out; goto out;
} }
@ -419,7 +406,7 @@ static QObject *parse_object(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
if (!token_is_operator(token, '{')) { if (token_get_type(token) != JSON_LCURLY) {
goto out; goto out;
} }
@ -431,7 +418,7 @@ static QObject *parse_object(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
if (!token_is_operator(peek, '}')) { if (token_get_type(peek) != JSON_RCURLY) {
if (parse_pair(ctxt, dict, ap) == -1) { if (parse_pair(ctxt, dict, ap) == -1) {
goto out; goto out;
} }
@ -442,8 +429,8 @@ static QObject *parse_object(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
while (!token_is_operator(token, '}')) { while (token_get_type(token) != JSON_RCURLY) {
if (!token_is_operator(token, ',')) { if (token_get_type(token) != JSON_COMMA) {
parse_error(ctxt, token, "expected separator in dict"); parse_error(ctxt, token, "expected separator in dict");
goto out; goto out;
} }
@ -481,7 +468,7 @@ static QObject *parse_array(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
if (!token_is_operator(token, '[')) { if (token_get_type(token) != JSON_LSQUARE) {
goto out; goto out;
} }
@ -493,7 +480,7 @@ static QObject *parse_array(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
if (!token_is_operator(peek, ']')) { if (token_get_type(peek) != JSON_RSQUARE) {
QObject *obj; QObject *obj;
obj = parse_value(ctxt, ap); obj = parse_value(ctxt, ap);
@ -510,8 +497,8 @@ static QObject *parse_array(JSONParserContext *ctxt, va_list *ap)
goto out; goto out;
} }
while (!token_is_operator(token, ']')) { while (token_get_type(token) != JSON_RSQUARE) {
if (!token_is_operator(token, ',')) { if (token_get_type(token) != JSON_COMMA) {
parse_error(ctxt, token, "expected separator in list"); parse_error(ctxt, token, "expected separator in list");
goto out; goto out;
} }

32
qobject/json-streamer.c
View File

@ -26,23 +26,21 @@ static void json_message_process_token(JSONLexer *lexer, QString *token, JSONTok
JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer);
QDict *dict; QDict *dict;
if (type == JSON_OPERATOR) { switch (type) {
switch (qstring_get_str(token)[0]) { case JSON_LCURLY:
case '{': parser->brace_count++;
parser->brace_count++; break;
break; case JSON_RCURLY:
case '}': parser->brace_count--;
parser->brace_count--; break;
break; case JSON_LSQUARE:
case '[': parser->bracket_count++;
parser->bracket_count++; break;
break; case JSON_RSQUARE:
case ']': parser->bracket_count--;
parser->bracket_count--; break;
break; default:
default: break;
break;
}
} }
dict = qdict_new(); dict = qdict_new();