Method constFold

externals/simplecpp/simplecpp.cpp:981–1014

}

void simplecpp::TokenList::constFold()
{
    while (cfront()) {
        // goto last '('
        Token *tok = back();
        while (tok && tok->op != '(')
            tok = tok->previous;

        // no '(', goto first token
        if (!tok)
            tok = front();

        // Constant fold expression
        constFoldUnaryNotPosNeg(tok);
        constFoldMulDivRem(tok);
        constFoldAddSub(tok);
        constFoldShift(tok);
        constFoldComparison(tok);
        constFoldBitwise(tok);
        constFoldLogicalOp(tok);
        constFoldQuestionOp(tok);

        // If there is no '(' we are done with the constant folding
        if (tok->op != '(')
            break;

        if (!tok->next || !tok->next->next || tok->next->next->op != ')')
            break;

        tok = tok->next;
        deleteToken(tok->previous);
        deleteToken(tok->next);
    }
}

static bool isFloatSuffix(const simplecpp::Token *tok)
{