Function parseIndex

src/e9tool/e9action.cpp:60–77

* Parse and index. */

 * Parse and index.
 */
static intptr_t parseIndex(Parser &parser, intptr_t lb, intptr_t ub)
{
    parser.expectToken('[');
    bool neg = false;
    if (parser.peekToken() == '-')
    {
        neg = true;
        parser.getToken();
    }
    parser.expectToken(TOKEN_INTEGER);
    intptr_t idx = parser.i;
    idx = (neg? -idx: idx);
    parser.expectToken(']');
    if (idx < lb || idx > ub)
        error("failed to parse %s; expected index within the range "
            "%ld..%ld, found %ld", parser.mode, lb, ub, idx);
    return idx;
}

/*
 * Parse a symbolic value.