Function getExprIdForOperand

lib/symboldatabase.cpp:1614–1632

namespace {
    int getExprIdForOperand(const Token* tok) {
        if (!tok)
            return 0;

        int otherExprId = 0;

        // Look through all referenced tokens.
        // If two exprIds are found and one matches tok->exprId(), return the other.
        // Otherwise, default to returning tok->exprId().
        for (const auto& ref: followAllReferences(tok)) {
            const int refExprId = ref.token->exprId();
            if (refExprId != 0 && refExprId != tok->exprId()) {
                if (otherExprId != 0 && otherExprId != refExprId)
                    return tok->exprId();
                otherExprId = refExprId;
            }
        }
        return otherExprId != 0 ? otherExprId : tok->exprId();
    }

    struct ExprIdKey {
        std::string parentOp;