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Add ParseRange function to parse args of the form int/[int,int]

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This commit is contained in:
Pieter Wuille
2019-02-27 13:41:41 -08:00
parent 29c24b05fb
commit 7aa6a8aefb
2 changed files with 17 additions and 0 deletions
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14
src/rpc/util.cpp
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@@ -523,3 +523,17 @@ std::string RPCArg::ToString(const bool oneline) const
}
assert(false);
}
std::pair<int64_t, int64_t> ParseRange(const UniValue& value)
{
if (value.isNum()) {
return {0, value.get_int64()};
}
if (value.isArray() && value.size() == 2 && value[0].isNum() && value[1].isNum()) {
int64_t low = value[0].get_int64();
int64_t high = value[1].get_int64();
if (low > high) throw JSONRPCError(RPC_INVALID_PARAMETER, "Range specified as [begin,end] must not have begin after end");
return {low, high};
}
throw JSONRPCError(RPC_INVALID_PARAMETER, "Range must be specified as end or as [begin,end]");
}