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#include <ctype.h>
#include <string.h>
#include <json.h>
#include "internal.h"
enum json_parse_result parse_literal(struct json **json_out, struct raw_json *raw) {
enum json_parse_result ret = JSON_PARSE_OK;
struct json *json = NULL;
bool plus_one = raw->data[raw->index] == '+' || raw->data[raw->index] == '-';
if (plus_one || isdigit(raw->data[raw->index])) {
if (raw->data[raw->index] == '0' && isdigit(raw->data[raw->index + 1])) {
ret = JSON_PARSE_INVALID_NUMBER_ERR;
goto err;
}
const char *start = raw->data + raw->index + plus_one;
char *end;
/* is probably a number here, strtodl will tell */
double num = strtod(start, &end);
if (end != start) {
if (raw->data[raw->index] == '-')
num = -num;
json = json_new_number(num);
raw->index = end - raw->data;
} else {
ret = JSON_PARSE_INVALID_NUMBER_ERR;
goto err;
}
} else {
size_t end_index;
for (end_index = raw->index; end_index < raw->size; end_index++) {
if (!isalpha(raw->data[end_index])) {
break;
}
}
size_t len = end_index - raw->index;
if (len == 4 && strncmp(raw->data + raw->index, "true", len) == 0) {
json = json_new_bool(true);
} else if (len == 5 && strncmp(raw->data + raw->index, "false", len) == 0) {
json = json_new_bool(false);
} else if (len == 4 && strncmp(raw->data + raw->index, "null", len) == 0) {
json = json_new_null();
} else {
ret = JSON_PARSE_INVALID_TOKEN_ERR;
}
raw->index = end_index;
}
if (!json)
return JSON_OOM;
*json_out = json;
goto end;
err:
json_delete(json);
end:
return ret;
}
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