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RPCTypeCheck method to make type-checking JSON Arrays easier.

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This commit is contained in:
Gavin Andresen 2012-06-22 18:36:42 -04:00
parent 34420d655d
commit 899d373b3c
2 changed files with 52 additions and 0 deletions
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37
src/bitcoinrpc.cpp
View File

@ -63,6 +63,43 @@ Object JSONRPCError(int code, const string& message)
return error;
}
void RPCTypeCheck(const Array& params,
const list<Value_type>& typesExpected)
{
int i = 0;
BOOST_FOREACH(Value_type t, typesExpected)
{
if (params.size() <= i)
break;
const Value& v = params[i];
if (v.type() != t)
{
string err = strprintf("Expected type %s, got %s",
Value_type_name[t], Value_type_name[v.type()]);
throw JSONRPCError(-3, err);
}
i++;
}
}
void RPCTypeCheck(const Object& o,
const map<string, Value_type>& typesExpected)
{
BOOST_FOREACH(const PAIRTYPE(string, Value_type)& t, typesExpected)
{
const Value& v = find_value(o, t.first);
if (v.type() == null_type)
throw JSONRPCError(-3, strprintf("Missing %s", t.first.c_str()));
if (v.type() != t.second)
{
string err = strprintf("Expected type %s for %s, got %s",
Value_type_name[t.second], t.first.c_str(), Value_type_name[v.type()]);
throw JSONRPCError(-3, err);
}
}
}
double GetDifficulty(const CBlockIndex* blockindex = NULL)
{
// Floating point number that is a multiple of the minimum difficulty,

15
src/bitcoinrpc.h
View File

@ -7,6 +7,7 @@
#define _BITCOINRPC_H_ 1
#include <string>
#include <list>
#include <map>
#include "json/json_spirit_reader_template.h"
@ -21,6 +22,20 @@ int CommandLineRPC(int argc, char *argv[]);
/** Convert parameter values for RPC call from strings to command-specific JSON objects. */
json_spirit::Array RPCConvertValues(const std::string &strMethod, const std::vector<std::string> &strParams);
/*
Type-check arguments; throws JSONRPCError if wrong type given. Does not check that
the right number of arguments are passed, just that any passed are the correct type.
Use like: RPCTypeCheck(params, boost::assign::list_of(str_type)(int_type)(obj_type));
*/
void RPCTypeCheck(const json_spirit::Array& params,
const std::list<json_spirit::Value_type>& typesExpected);
/*
Check for expected keys/value types in an Object.
Use like: RPCTypeCheck(object, boost::assign::map_list_of("name", str_type)("value", int_type));
*/
void RPCTypeCheck(const json_spirit::Object& o,
const std::map<std::string, json_spirit::Value_type>& typesExpected);
typedef json_spirit::Value(*rpcfn_type)(const json_spirit::Array& params, bool fHelp);
class CRPCCommand