Function parseMetadata

src/e9patch/e9json.cpp:970–1007

* Parse instruction metadata. */

 * Parse instruction metadata.
 */
static Metadata *parseMetadata(Parser &parser)
{
    std::map<const char *, Trampoline *, CStrCmp> entries;

    expectToken(parser, '{');
    char token = expectToken2(parser, '}', TOKEN_STRING);
    while (token != '}')
    {
        if (parser.s[0] != '$')
            parse_error(parser, "failed to parse instruction metadata; "
                "macro name must begin with a `$', found \"%s\"", parser.s);
        auto i = entries.find(parser.s);
        if (i != entries.end())
            parse_error(parser, "failed to parse instruction metadata; "
                "duplicate entry for \"%s\"", parser.s);
        const char *name = dupString(parser.s);
        expectToken(parser, ':');
        Trampoline *T = parseTrampoline(parser);
        entries.insert(std::make_pair(name, T));
        token = expectToken2(parser, ',', '}');
        if (token == ',')
             token = getToken(parser);
    }

    size_t num_entries = entries.size();
    uint8_t *ptr = new uint8_t[sizeof(Metadata) +
        num_entries * sizeof(MetaEntry)];
    Metadata *meta = (Metadata *)ptr;
    meta->num_entries = num_entries;
    size_t i = 0;
    for (auto pair: entries)
    {
        meta->entries[i].name = pair.first;
        meta->entries[i].T    = pair.second;
        i++;
    }
    return meta;
}

/*
 * Parse strings.