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-rw-r--r--indra/llcommon/CMakeLists.txt1
-rw-r--r--indra/llcommon/lleventdispatcher.cpp566
-rw-r--r--indra/llcommon/lleventdispatcher.h393
-rw-r--r--indra/llcommon/llsdutil.cpp27
-rw-r--r--indra/llcommon/llsdutil.h285
-rw-r--r--indra/llcommon/tests/lleventdispatcher_test.cpp1324
6 files changed, 2525 insertions, 71 deletions
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 9342a22d46..dc9f93df3b 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -313,6 +313,7 @@ if (LL_TESTS)
LL_ADD_INTEGRATION_TEST(lluri "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(reflection "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(stringize "" "${test_libs}")
+ LL_ADD_INTEGRATION_TEST(lleventdispatcher "" "${test_libs}")
# *TODO - reenable these once tcmalloc libs no longer break the build.
#ADD_BUILD_TEST(llallocator llcommon)
diff --git a/indra/llcommon/lleventdispatcher.cpp b/indra/llcommon/lleventdispatcher.cpp
index d6e820d793..5b6d4efbe9 100644
--- a/indra/llcommon/lleventdispatcher.cpp
+++ b/indra/llcommon/lleventdispatcher.cpp
@@ -41,6 +41,354 @@
#include "llevents.h"
#include "llerror.h"
#include "llsdutil.h"
+#include "stringize.h"
+#include <memory> // std::auto_ptr
+
+/*****************************************************************************
+* LLSDArgsSource
+*****************************************************************************/
+/**
+ * Store an LLSD array, producing its elements one at a time. Die with LL_ERRS
+ * if the consumer requests more elements than the array contains.
+ */
+class LL_COMMON_API LLSDArgsSource
+{
+public:
+ LLSDArgsSource(const std::string function, const LLSD& args);
+ ~LLSDArgsSource();
+
+ LLSD next();
+
+ void done() const;
+
+private:
+ std::string _function;
+ LLSD _args;
+ LLSD::Integer _index;
+};
+
+LLSDArgsSource::LLSDArgsSource(const std::string function, const LLSD& args):
+ _function(function),
+ _args(args),
+ _index(0)
+{
+ if (! (_args.isUndefined() || _args.isArray()))
+ {
+ LL_ERRS("LLSDArgsSource") << _function << " needs an args array instead of "
+ << _args << LL_ENDL;
+ }
+}
+
+LLSDArgsSource::~LLSDArgsSource()
+{
+ done();
+}
+
+LLSD LLSDArgsSource::next()
+{
+ if (_index >= _args.size())
+ {
+ LL_ERRS("LLSDArgsSource") << _function << " requires more arguments than the "
+ << _args.size() << " provided: " << _args << LL_ENDL;
+ }
+ return _args[_index++];
+}
+
+void LLSDArgsSource::done() const
+{
+ if (_index < _args.size())
+ {
+ LL_WARNS("LLSDArgsSource") << _function << " only consumed " << _index
+ << " of the " << _args.size() << " arguments provided: "
+ << _args << LL_ENDL;
+ }
+}
+
+/*****************************************************************************
+* LLSDArgsMapper
+*****************************************************************************/
+/**
+ * From a formal parameters description and a map of arguments, construct an
+ * arguments array.
+ *
+ * That is, given:
+ * - an LLSD array of length n containing parameter-name strings,
+ * corresponding to the arguments of a function of interest
+ * - an LLSD collection specifying default parameter values, either:
+ * - an LLSD array of length m <= n, matching the rightmost m params, or
+ * - an LLSD map explicitly stating default name=value pairs
+ * - an LLSD map of parameter names and actual values for a particular
+ * function call
+ * construct an LLSD array of actual argument values for this function call.
+ *
+ * The parameter-names array and the defaults collection describe the function
+ * being called. The map might vary with every call, providing argument values
+ * for the described parameters.
+ *
+ * The array of parameter names must match the number of parameters expected
+ * by the function of interest.
+ *
+ * If you pass a map of default parameter values, it provides default values
+ * as you might expect. It is an error to specify a default value for a name
+ * not listed in the parameters array.
+ *
+ * If you pass an array of default parameter values, it is mapped to the
+ * rightmost m of the n parameter names. It is an error if the default-values
+ * array is longer than the parameter-names array. Consider the following
+ * parameter names: ["a", "b", "c", "d"].
+ *
+ * - An empty array of default values (or an isUndefined() value) asserts that
+ * every one of the above parameter names is required.
+ * - An array of four default values [1, 2, 3, 4] asserts that every one of
+ * the above parameters is optional. If the current parameter map is empty,
+ * they will be passed to the function as [1, 2, 3, 4].
+ * - An array of two default values [11, 12] asserts that parameters "a" and
+ * "b" are required, while "c" and "d" are optional, having default values
+ * "c"=11 and "d"=12.
+ *
+ * The arguments array is constructed as follows:
+ *
+ * - Arguments-map keys not found in the parameter-names array are ignored.
+ * - Entries from the map provide values for an improper subset of the
+ * parameters named in the parameter-names array. This results in a
+ * tentative values array with "holes." (size of map) + (number of holes) =
+ * (size of names array)
+ * - Holes are filled with the default values.
+ * - Any remaining holes constitute an error.
+ */
+class LL_COMMON_API LLSDArgsMapper
+{
+public:
+ /// Accept description of function: function name, param names, param
+ /// default values
+ LLSDArgsMapper(const std::string& function, const LLSD& names, const LLSD& defaults);
+
+ /// Given arguments map, return LLSD::Array of parameter values, or LL_ERRS.
+ LLSD map(const LLSD& argsmap) const;
+
+private:
+ static std::string formatlist(const LLSD&);
+
+ // The function-name string is purely descriptive. We want error messages
+ // to be able to indicate which function's LLSDArgsMapper has the problem.
+ std::string _function;
+ // Store the names array pretty much as given.
+ LLSD _names;
+ // Though we're handed an array of name strings, it's more useful to us to
+ // store it as a map from name string to position index. Of course that's
+ // easy to generate from the incoming names array, but why do it more than
+ // once?
+ typedef std::map<LLSD::String, LLSD::Integer> IndexMap;
+ IndexMap _indexes;
+ // Generated array of default values, aligned with the array of param names.
+ LLSD _defaults;
+ // Indicate whether we have a default value for each param.
+ typedef std::vector<char> FilledVector;
+ FilledVector _has_dft;
+};
+
+LLSDArgsMapper::LLSDArgsMapper(const std::string& function,
+ const LLSD& names, const LLSD& defaults):
+ _function(function),
+ _names(names),
+ _has_dft(names.size())
+{
+ if (! (_names.isUndefined() || _names.isArray()))
+ {
+ LL_ERRS("LLSDArgsMapper") << function << " names must be an array, not " << names << LL_ENDL;
+ }
+ LLSD::Integer nparams(_names.size());
+ // From _names generate _indexes.
+ for (LLSD::Integer ni = 0, nend = _names.size(); ni < nend; ++ni)
+ {
+ _indexes[_names[ni]] = ni;
+ }
+
+ // Presize _defaults() array so we don't have to resize it more than once.
+ // All entries are initialized to LLSD(); but since _has_dft is still all
+ // 0, they're all "holes" for now.
+ if (nparams)
+ {
+ _defaults[nparams - 1] = LLSD();
+ }
+
+ if (defaults.isUndefined() || defaults.isArray())
+ {
+ LLSD::Integer ndefaults = defaults.size();
+ // defaults is a (possibly empty) array. Right-align it with names.
+ if (ndefaults > nparams)
+ {
+ LL_ERRS("LLSDArgsMapper") << function << " names array " << names
+ << " shorter than defaults array " << defaults << LL_ENDL;
+ }
+
+ // Offset by which we slide defaults array right to right-align with
+ // _names array
+ LLSD::Integer offset = nparams - ndefaults;
+ // Fill rightmost _defaults entries from defaults, and mark them as
+ // filled
+ for (LLSD::Integer i = 0, iend = ndefaults; i < iend; ++i)
+ {
+ _defaults[i + offset] = defaults[i];
+ _has_dft[i + offset] = 1;
+ }
+ }
+ else if (defaults.isMap())
+ {
+ // defaults is a map. Use it to populate the _defaults array.
+ LLSD bogus;
+ for (LLSD::map_const_iterator mi(defaults.beginMap()), mend(defaults.endMap());
+ mi != mend; ++mi)
+ {
+ IndexMap::const_iterator ixit(_indexes.find(mi->first));
+ if (ixit == _indexes.end())
+ {
+ bogus.append(mi->first);
+ continue;
+ }
+
+ LLSD::Integer pos = ixit->second;
+ // Store default value at that position in the _defaults array.
+ _defaults[pos] = mi->second;
+ // Don't forget to record the fact that we've filled this
+ // position.
+ _has_dft[pos] = 1;
+ }
+ if (bogus.size())
+ {
+ LL_ERRS("LLSDArgsMapper") << function << " defaults specified for nonexistent params "
+ << formatlist(bogus) << LL_ENDL;
+ }
+ }
+ else
+ {
+ LL_ERRS("LLSDArgsMapper") << function << " defaults must be a map or an array, not "
+ << defaults << LL_ENDL;
+ }
+}
+
+LLSD LLSDArgsMapper::map(const LLSD& argsmap) const
+{
+ if (! (argsmap.isUndefined() || argsmap.isMap() || argsmap.isArray()))
+ {
+ LL_ERRS("LLSDArgsMapper") << _function << " map() needs a map or array, not "
+ << argsmap << LL_ENDL;
+ }
+ // Initialize the args array. Indexing a non-const LLSD array grows it
+ // to appropriate size, but we don't want to resize this one on each
+ // new operation. Just make it as big as we need before we start
+ // stuffing values into it.
+ LLSD args(LLSD::emptyArray());
+ if (_defaults.size() == 0)
+ {
+ // If this function requires no arguments, fast exit. (Don't try to
+ // assign to args[-1].)
+ return args;
+ }
+ args[_defaults.size() - 1] = LLSD();
+
+ // Get a vector of chars to indicate holes. It's tempting to just scan
+ // for LLSD::isUndefined() values after filling the args array from
+ // the map, but it's plausible for caller to explicitly pass
+ // isUndefined() as the value of some parameter name. That's legal
+ // since isUndefined() has well-defined conversions (default value)
+ // for LLSD data types. So use a whole separate array for detecting
+ // holes. (Avoid std::vector<bool> which is known to be odd -- can we
+ // iterate?)
+ FilledVector filled(args.size());
+
+ if (argsmap.isArray())
+ {
+ // Fill args from array. If there are too many args in passed array,
+ // ignore the rest.
+ LLSD::Integer size(argsmap.size());
+ if (size > args.size())
+ {
+ // We don't just use std::min() because we want to sneak in this
+ // warning if caller passes too many args.
+ LL_WARNS("LLSDArgsMapper") << _function << " needs " << args.size()
+ << " params, ignoring last " << (size - args.size())
+ << " of passed " << size << ": " << argsmap << LL_ENDL;
+ size = args.size();
+ }
+ for (LLSD::Integer i(0); i < size; ++i)
+ {
+ // Copy the actual argument from argsmap
+ args[i] = argsmap[i];
+ // Note that it's been filled
+ filled[i] = 1;
+ }
+ }
+ else
+ {
+ // argsmap is in fact a map. Walk the map.
+ for (LLSD::map_const_iterator mi(argsmap.beginMap()), mend(argsmap.endMap());
+ mi != mend; ++mi)
+ {
+ // mi->first is a parameter-name string, with mi->second its
+ // value. Look up the name's position index in _indexes.
+ IndexMap::const_iterator ixit(_indexes.find(mi->first));
+ if (ixit == _indexes.end())
+ {
+ // Allow for a map containing more params than were passed in
+ // our names array. Caller typically receives a map containing
+ // the function name, cruft such as reqid, etc. Ignore keys
+ // not defined in _indexes.
+ LL_DEBUGS("LLSDArgsMapper") << _function << " ignoring "
+ << mi->first << "=" << mi->second << LL_ENDL;
+ continue;
+ }
+ LLSD::Integer pos = ixit->second;
+ // Store the value at that position in the args array.
+ args[pos] = mi->second;
+ // Don't forget to record the fact that we've filled this
+ // position.
+ filled[pos] = 1;
+ }
+ }
+
+ // Fill any remaining holes from _defaults.
+ LLSD unfilled(LLSD::emptyArray());
+ for (LLSD::Integer i = 0, iend = args.size(); i < iend; ++i)
+ {
+ if (! filled[i])
+ {
+ // If there's no default value for this parameter, that's an
+ // error.
+ if (! _has_dft[i])
+ {
+ unfilled.append(_names[i]);
+ }
+ else
+ {
+ args[i] = _defaults[i];
+ }
+ }
+ }
+ // If any required args -- args without defaults -- were left unfilled
+ // by argsmap, that's a problem.
+ if (unfilled.size())
+ {
+ LL_ERRS("LLSDArgsMapper") << _function << " missing required arguments "
+ << formatlist(unfilled) << " from " << argsmap << LL_ENDL;
+ }
+
+ // done
+ return args;
+}
+
+std::string LLSDArgsMapper::formatlist(const LLSD& list)
+{
+ std::ostringstream out;
+ const char* delim = "";
+ for (LLSD::array_const_iterator li(list.beginArray()), lend(list.endArray());
+ li != lend; ++li)
+ {
+ out << delim << li->asString();
+ delim = ", ";
+ }
+ return out.str();
+}
LLEventDispatcher::LLEventDispatcher(const std::string& desc, const std::string& key):
mDesc(desc),
@@ -52,12 +400,181 @@ LLEventDispatcher::~LLEventDispatcher()
{
}
+/**
+ * DispatchEntry subclass used for callables accepting(const LLSD&)
+ */
+struct LLEventDispatcher::LLSDDispatchEntry: public LLEventDispatcher::DispatchEntry
+{
+ LLSDDispatchEntry(const std::string& desc, const Callable& func, const LLSD& required):
+ DispatchEntry(desc),
+ mFunc(func),
+ mRequired(required)
+ {}
+
+ Callable mFunc;
+ LLSD mRequired;
+
+ virtual void call(const std::string& desc, const LLSD& event) const
+ {
+ // Validate the syntax of the event itself.
+ std::string mismatch(llsd_matches(mRequired, event));
+ if (! mismatch.empty())
+ {
+ LL_ERRS("LLEventDispatcher") << desc << ": bad request: " << mismatch << LL_ENDL;
+ }
+ // Event syntax looks good, go for it!
+ mFunc(event);
+ }
+
+ virtual LLSD addMetadata(LLSD meta) const
+ {
+ meta["required"] = mRequired;
+ return meta;
+ }
+};
+
+/**
+ * DispatchEntry subclass for passing LLSD to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::ParamsDispatchEntry: public LLEventDispatcher::DispatchEntry
+{
+ ParamsDispatchEntry(const std::string& desc, const invoker_function& func):
+ DispatchEntry(desc),
+ mInvoker(func)
+ {}
+
+ invoker_function mInvoker;
+
+ virtual void call(const std::string& desc, const LLSD& event) const
+ {
+ LLSDArgsSource src(desc, event);
+ mInvoker(boost::bind(&LLSDArgsSource::next, boost::ref(src)));
+ }
+};
+
+/**
+ * DispatchEntry subclass for dispatching LLSD::Array to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::ArrayParamsDispatchEntry: public LLEventDispatcher::ParamsDispatchEntry
+{
+ ArrayParamsDispatchEntry(const std::string& desc, const invoker_function& func,
+ LLSD::Integer arity):
+ ParamsDispatchEntry(desc, func),
+ mArity(arity)
+ {}
+
+ LLSD::Integer mArity;
+
+ virtual LLSD addMetadata(LLSD meta) const
+ {
+ LLSD array(LLSD::emptyArray());
+ // Resize to number of arguments required
+ if (mArity)
+ array[mArity - 1] = LLSD();
+ llassert_always(array.size() == mArity);
+ meta["required"] = array;
+ return meta;
+ }
+};
+
+/**
+ * DispatchEntry subclass for dispatching LLSD::Map to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::MapParamsDispatchEntry: public LLEventDispatcher::ParamsDispatchEntry
+{
+ MapParamsDispatchEntry(const std::string& name, const std::string& desc,
+ const invoker_function& func,
+ const LLSD& params, const LLSD& defaults):
+ ParamsDispatchEntry(desc, func),
+ mMapper(name, params, defaults),
+ mRequired(LLSD::emptyMap())
+ {
+ // Build the set of all param keys, then delete the ones that are
+ // optional. What's left are the ones that are required.
+ for (LLSD::array_const_iterator pi(params.beginArray()), pend(params.endArray());
+ pi != pend; ++pi)
+ {
+ mRequired[pi->asString()] = LLSD();
+ }
+
+ if (defaults.isArray() || defaults.isUndefined())
+ {
+ // Right-align the params and defaults arrays.
+ LLSD::Integer offset = params.size() - defaults.size();
+ // Now the name of every defaults[i] is at params[i + offset].
+ for (LLSD::Integer i(0), iend(defaults.size()); i < iend; ++i)
+ {
+ // Erase this optional param from mRequired.
+ mRequired.erase(params[i + offset].asString());
+ // Instead, make an entry in mOptional with the default
+ // param's name and value.
+ mOptional[params[i + offset].asString()] = defaults[i];
+ }
+ }
+ else if (defaults.isMap())
+ {
+ // if defaults is already a map, then it's already in the form we
+ // intend to deliver in metadata
+ mOptional = defaults;
+ // Just delete from mRequired every key appearing in mOptional.
+ for (LLSD::map_const_iterator mi(mOptional.beginMap()), mend(mOptional.endMap());
+ mi != mend; ++mi)
+ {
+ mRequired.erase(mi->first);
+ }
+ }
+ }
+
+ LLSDArgsMapper mMapper;
+ LLSD mRequired;
+ LLSD mOptional;
+
+ virtual void call(const std::string& desc, const LLSD& event) const
+ {
+ // Just convert from LLSD::Map to LLSD::Array using mMapper, then pass
+ // to base-class call() method.
+ ParamsDispatchEntry::call(desc, mMapper.map(event));
+ }
+
+ virtual LLSD addMetadata(LLSD meta) const
+ {
+ meta["required"] = mRequired;
+ meta["optional"] = mOptional;
+ return meta;
+ }
+};
+
+void LLEventDispatcher::addArrayParamsDispatchEntry(const std::string& name,
+ const std::string& desc,
+ const invoker_function& invoker,
+ LLSD::Integer arity)
+{
+ mDispatch.insert(
+ DispatchMap::value_type(name, DispatchMap::mapped_type(
+ new ArrayParamsDispatchEntry(desc, invoker, arity))));
+}
+
+void LLEventDispatcher::addMapParamsDispatchEntry(const std::string& name,
+ const std::string& desc,
+ const invoker_function& invoker,
+ const LLSD& params,
+ const LLSD& defaults)
+{
+ mDispatch.insert(
+ DispatchMap::value_type(name, DispatchMap::mapped_type(
+ new MapParamsDispatchEntry(name, desc, invoker, params, defaults))));
+}
+
/// Register a callable by name
void LLEventDispatcher::add(const std::string& name, const std::string& desc,
const Callable& callable, const LLSD& required)
{
- mDispatch.insert(DispatchMap::value_type(name,
- DispatchMap::mapped_type(callable, desc, required)));
+ mDispatch.insert(
+ DispatchMap::value_type(name, DispatchMap::mapped_type(
+ new LLSDDispatchEntry(desc, callable, required))));
}
void LLEventDispatcher::addFail(const std::string& name, const std::string& classname) const
@@ -83,7 +600,7 @@ bool LLEventDispatcher::remove(const std::string& name)
/// such callable exists, die with LL_ERRS.
void LLEventDispatcher::operator()(const std::string& name, const LLSD& event) const
{
- if (! attemptCall(name, event))
+ if (! try_call(name, event))
{
LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << "): '" << name
<< "' not found" << LL_ENDL;
@@ -98,44 +615,29 @@ void LLEventDispatcher::operator()(const LLSD& event) const
// This could/should be implemented in terms of the two-arg overload.
// However -- we can produce a more informative error message.
std::string name(event[mKey]);
- if (! attemptCall(name, event))
+ if (! try_call(name, event))
{
LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << "): bad " << mKey
<< " value '" << name << "'" << LL_ENDL;
}
}
-bool LLEventDispatcher::attemptCall(const std::string& name, const LLSD& event) const
+bool LLEventDispatcher::try_call(const LLSD& event) const
{
- DispatchMap::const_iterator found = mDispatch.find(name);
- if (found == mDispatch.end())
- {
- // The reason we only return false, leaving it up to our caller to die
- // with LL_ERRS, is that different callers have different amounts of
- // available information.
- return false;
- }
- // Found the name, so it's plausible to even attempt the call. But first,
- // validate the syntax of the event itself.
- std::string mismatch(llsd_matches(found->second.mRequired, event));
- if (! mismatch.empty())
- {
- LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << ") calling '" << name
- << "': bad request: " << mismatch << LL_ENDL;
- }
- // Event syntax looks good, go for it!
- (found->second.mFunc)(event);
- return true; // tell caller we were able to call
+ return try_call(event[mKey], event);
}
-LLEventDispatcher::Callable LLEventDispatcher::get(const std::string& name) const
+bool LLEventDispatcher::try_call(const std::string& name, const LLSD& event) const
{
DispatchMap::const_iterator found = mDispatch.find(name);
if (found == mDispatch.end())
{
- return Callable();
+ return false;
}
- return found->second.mFunc;
+ // Found the name, so it's plausible to even attempt the call.
+ found->second->call(STRINGIZE("LLEventDispatcher(" << mDesc << ") calling '" << name << "'"),
+ event);
+ return true; // tell caller we were able to call
}
LLSD LLEventDispatcher::getMetadata(const std::string& name) const
@@ -147,9 +649,8 @@ LLSD LLEventDispatcher::getMetadata(const std::string& name) const
}
LLSD meta;
meta["name"] = name;
- meta["desc"] = found->second.mDesc;
- meta["required"] = found->second.mRequired;
- return meta;
+ meta["desc"] = found->second->mDesc;
+ return found->second->addMetadata(meta);
}
LLDispatchListener::LLDispatchListener(const std::string& pumpname, const std::string& key):
@@ -164,3 +665,8 @@ bool LLDispatchListener::process(const LLSD& event)
(*this)(event);
return false;
}
+
+LLEventDispatcher::DispatchEntry::DispatchEntry(const std::string& desc):
+ mDesc(desc)
+{}
+
diff --git a/indra/llcommon/lleventdispatcher.h b/indra/llcommon/lleventdispatcher.h
index dfffd59eb6..7acc61de4e 100644
--- a/indra/llcommon/lleventdispatcher.h
+++ b/indra/llcommon/lleventdispatcher.h
@@ -27,18 +27,56 @@
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
+ *
+ * The invoker machinery that constructs a boost::fusion argument list for use
+ * with boost::fusion::invoke() is derived from
+ * http://www.boost.org/doc/libs/1_45_0/libs/function_types/example/interpreter.hpp
+ * whose license information is copied below:
+ *
+ * "(C) Copyright Tobias Schwinger
+ *
+ * Use modification and distribution are subject to the boost Software License,
+ * Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt)."
*/
#if ! defined(LL_LLEVENTDISPATCHER_H)
#define LL_LLEVENTDISPATCHER_H
+// nil is too generic a term to be allowed to be a global macro. In
+// particular, boost::fusion defines a 'class nil' (properly encapsulated in a
+// namespace) that a global 'nil' macro breaks badly.
+#if defined(nil)
+// Capture the value of the macro 'nil', hoping int is an appropriate type.
+static const int nil_(nil);
+// Now forget the macro.
+#undef nil
+// Finally, reintroduce 'nil' as a properly-scoped alias for the previously-
+// defined const 'nil_'. Make it static since otherwise it produces duplicate-
+// symbol link errors later.
+static const int& nil(nil_);
+#endif
+
#include <string>
-#include <map>
+#include <boost/shared_ptr.hpp>
#include <boost/function.hpp>
#include <boost/bind.hpp>
#include <boost/iterator/transform_iterator.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/function_types/is_nonmember_callable_builtin.hpp>
+#include <boost/function_types/parameter_types.hpp>
+#include <boost/function_types/function_arity.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/fusion/include/push_back.hpp>
+#include <boost/fusion/include/cons.hpp>
+#include <boost/fusion/include/invoke.hpp>
+#include <boost/mpl/begin.hpp>
+#include <boost/mpl/end.hpp>
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/deref.hpp>
#include <typeinfo>
#include "llevents.h"
+#include "llsdutil.h"
class LLSD;
@@ -54,12 +92,18 @@ public:
LLEventDispatcher(const std::string& desc, const std::string& key);
virtual ~LLEventDispatcher();
- /// Accept any C++ callable, typically a boost::bind() expression
+ /// @name Register functions accepting(const LLSD&)
+ //@{
+
+ /// Accept any C++ callable with the right signature, typically a
+ /// boost::bind() expression
typedef boost::function<void(const LLSD&)> Callable;
/**
- * Register a @a callable by @a name. The optional @a required parameter
- * is used to validate the structure of each incoming event (see
+ * Register a @a callable by @a name. The passed @a callable accepts a
+ * single LLSD value and uses it in any way desired, e.g. extract
+ * parameters and call some other function. The optional @a required
+ * parameter is used to validate the structure of each incoming event (see
* llsd_matches()).
*/
void add(const std::string& name,
@@ -68,9 +112,23 @@ public:
const LLSD& required=LLSD());
/**
+ * The case of a free function (or static method) accepting(const LLSD&)
+ * could also be intercepted by the arbitrary-args overload below. Ensure
+ * that it's directed to the Callable overload above instead.
+ */
+ void add(const std::string& name,
+ const std::string& desc,
+ void (*f)(const LLSD&),
+ const LLSD& required=LLSD())
+ {
+ add(name, desc, Callable(f), required);
+ }
+
+ /**
* Special case: a subclass of this class can pass an unbound member
- * function pointer without explicitly specifying the
- * <tt>boost::bind()</tt> expression.
+ * function pointer (of an LLEventDispatcher subclass) without explicitly
+ * specifying the <tt>boost::bind()</tt> expression. The passed @a method
+ * accepts a single LLSD value, presumably containing other parameters.
*/
template <class CLASS>
void add(const std::string& name,
@@ -81,7 +139,8 @@ public:
addMethod<CLASS>(name, desc, method, required);
}
- /// Overload for both const and non-const methods
+ /// Overload for both const and non-const methods. The passed @a method
+ /// accepts a single LLSD value, presumably containing other parameters.
template <class CLASS>
void add(const std::string& name,
const std::string& desc,
@@ -91,15 +150,106 @@ public:
addMethod<CLASS>(name, desc, method, required);
}
- /// Convenience: for LLEventDispatcher, not every callable needs a
- /// documentation string.
- template <typename CALLABLE>
- void add(const std::string& name,
- CALLABLE callable,
- const LLSD& required=LLSD())
- {
- add(name, "", callable, required);
- }
+ //@}
+
+ /// @name Register functions with arbitrary param lists
+ //@{
+
+ /**
+ * Register a free function with arbitrary parameters. (This also works
+ * for static class methods.)
+ *
+ * @note This supports functions with up to about 6 parameters -- after
+ * that you start getting dismaying compile errors in which
+ * boost::fusion::joint_view is mentioned a surprising number of times.
+ *
+ * When calling this name, pass an LLSD::Array. Each entry in turn will be
+ * converted to the corresponding parameter type using LLSDParam.
+ */
+ template<typename Function>
+ typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function>
+ >::type add(const std::string& name,
+ const std::string& desc,
+ Function f);
+
+ /**
+ * Register a nonstatic class method with arbitrary parameters.
+ *
+ * @note This supports functions with up to about 6 parameters -- after
+ * that you start getting dismaying compile errors in which
+ * boost::fusion::joint_view is mentioned a surprising number of times.
+ *
+ * To cover cases such as a method on an LLSingleton we don't yet want to
+ * instantiate, instead of directly storing an instance pointer, accept a
+ * nullary callable returning a pointer/reference to the desired class
+ * instance. If you already have an instance in hand,
+ * boost::lambda::var(instance) or boost::lambda::constant(instance_ptr)
+ * produce suitable callables.
+ *
+ * When calling this name, pass an LLSD::Array. Each entry in turn will be
+ * converted to the corresponding parameter type using LLSDParam.
+ */
+ template<typename Method, typename InstanceGetter>
+ typename boost::enable_if< boost::function_types::is_member_function_pointer<Method>
+ >::type add(const std::string& name,
+ const std::string& desc,
+ Method f,
+ const InstanceGetter& getter);
+
+ /**
+ * Register a free function with arbitrary parameters. (This also works
+ * for static class methods.)
+ *
+ * @note This supports functions with up to about 6 parameters -- after
+ * that you start getting dismaying compile errors in which
+ * boost::fusion::joint_view is mentioned a surprising number of times.
+ *
+ * Pass an LLSD::Array of parameter names, and optionally another
+ * LLSD::Array of default parameter values, a la LLSDArgsMapper.
+ *
+ * When calling this name, pass an LLSD::Map. We will internally generate
+ * an LLSD::Array using LLSDArgsMapper and then convert each entry in turn
+ * to the corresponding parameter type using LLSDParam.
+ */
+ template<typename Function>
+ typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function>
+ >::type add(const std::string& name,
+ const std::string& desc,
+ Function f,
+ const LLSD& params,
+ const LLSD& defaults=LLSD());
+
+ /**
+ * Register a nonstatic class method with arbitrary parameters.
+ *
+ * @note This supports functions with up to about 6 parameters -- after
+ * that you start getting dismaying compile errors in which
+ * boost::fusion::joint_view is mentioned a surprising number of times.
+ *
+ * To cover cases such as a method on an LLSingleton we don't yet want to
+ * instantiate, instead of directly storing an instance pointer, accept a
+ * nullary callable returning a pointer/reference to the desired class
+ * instance. If you already have an instance in hand,
+ * boost::lambda::var(instance) or boost::lambda::constant(instance_ptr)
+ * produce suitable callables.
+ *
+ * Pass an LLSD::Array of parameter names, and optionally another
+ * LLSD::Array of default parameter values, a la LLSDArgsMapper.
+ *
+ * When calling this name, pass an LLSD::Map. We will internally generate
+ * an LLSD::Array using LLSDArgsMapper and then convert each entry in turn
+ * to the corresponding parameter type using LLSDParam.
+ */
+ template<typename Method, typename InstanceGetter>
+ typename boost::enable_if< boost::function_types::is_member_function_pointer<Method>
+ >::type add(const std::string& name,
+ const std::string& desc,
+ Method f,
+ const InstanceGetter& getter,
+ const LLSD& params,
+ const LLSD& defaults=LLSD());
+
+ //@}
/// Unregister a callable
bool remove(const std::string& name);
@@ -109,12 +259,25 @@ public:
/// the @a required prototype specified at add() time, die with LL_ERRS.
void operator()(const std::string& name, const LLSD& event) const;
+ /// Call a registered callable with an explicitly-specified name and
+ /// return <tt>true</tt>. If no such callable exists, return
+ /// <tt>false</tt>. If the @a event fails to match the @a required
+ /// prototype specified at add() time, die with LL_ERRS.
+ bool try_call(const std::string& name, const LLSD& event) const;
+
/// Extract the @a key value from the incoming @a event, and call the
/// callable whose name is specified by that map @a key. If no such
/// callable exists, die with LL_ERRS. If the @a event fails to match the
/// @a required prototype specified at add() time, die with LL_ERRS.
void operator()(const LLSD& event) const;
+ /// Extract the @a key value from the incoming @a event, call the callable
+ /// whose name is specified by that map @a key and return <tt>true</tt>.
+ /// If no such callable exists, return <tt>false</tt>. If the @a event
+ /// fails to match the @a required prototype specified at add() time, die
+ /// with LL_ERRS.
+ bool try_call(const LLSD& event) const;
+
/// @name Iterate over defined names
//@{
typedef std::pair<std::string, std::string> NameDesc;
@@ -122,16 +285,22 @@ public:
private:
struct DispatchEntry
{
- DispatchEntry(const Callable& func, const std::string& desc, const LLSD& required):
- mFunc(func),
- mDesc(desc),
- mRequired(required)
- {}
- Callable mFunc;
+ DispatchEntry(const std::string& desc);
+ virtual ~DispatchEntry() {} // suppress MSVC warning, sigh
+
std::string mDesc;
- LLSD mRequired;
+
+ virtual void call(const std::string& desc, const LLSD& event) const = 0;
+ virtual LLSD addMetadata(LLSD) const = 0;
};
- typedef std::map<std::string, DispatchEntry> DispatchMap;
+ // Tried using boost::ptr_map<std::string, DispatchEntry>, but ptr_map<>
+ // wants its value type to be "clonable," even just to dereference an
+ // iterator. I don't want to clone entries -- if I have to copy an entry
+ // around, I want it to continue pointing to the same DispatchEntry
+ // subclass object. However, I definitely want DispatchMap to destroy
+ // DispatchEntry if no references are outstanding at the time an entry is
+ // removed. This looks like a job for boost::shared_ptr.
+ typedef std::map<std::string, boost::shared_ptr<DispatchEntry> > DispatchMap;
public:
/// We want the flexibility to redefine what data we store per name,
@@ -149,10 +318,6 @@ public:
}
//@}
- /// Fetch the Callable for the specified name. If no such name was
- /// registered, return an empty() Callable.
- Callable get(const std::string& name) const;
-
/// Get information about a specific Callable
LLSD getMetadata(const std::string& name) const;
@@ -175,18 +340,184 @@ private:
}
}
void addFail(const std::string& name, const std::string& classname) const;
- /// try to dispatch, return @c true if success
- bool attemptCall(const std::string& name, const LLSD& event) const;
std::string mDesc, mKey;
DispatchMap mDispatch;
static NameDesc makeNameDesc(const DispatchMap::value_type& item)
{
- return NameDesc(item.first, item.second.mDesc);
+ return NameDesc(item.first, item.second->mDesc);
+ }
+
+ struct LLSDDispatchEntry;
+ struct ParamsDispatchEntry;
+ struct ArrayParamsDispatchEntry;
+ struct MapParamsDispatchEntry;
+
+ // Step 2 of parameter analysis. Instantiating invoker<some_function_type>
+ // implicitly sets its From and To parameters to the (compile time) begin
+ // and end iterators over that function's parameter types.
+ template< typename Function
+ , class From = typename boost::mpl::begin< boost::function_types::parameter_types<Function> >::type
+ , class To = typename boost::mpl::end< boost::function_types::parameter_types<Function> >::type
+ >
+ struct invoker;
+
+ // deliver LLSD arguments one at a time
+ typedef boost::function<LLSD()> args_source;
+ // obtain args from an args_source to build param list and call target
+ // function
+ typedef boost::function<void(const args_source&)> invoker_function;
+
+ template <typename Function>
+ invoker_function make_invoker(Function f);
+ template <typename Method, typename InstanceGetter>
+ invoker_function make_invoker(Method f, const InstanceGetter& getter);
+ void addArrayParamsDispatchEntry(const std::string& name,
+ const std::string& desc,
+ const invoker_function& invoker,
+ LLSD::Integer arity);
+ void addMapParamsDispatchEntry(const std::string& name,
+ const std::string& desc,
+ const invoker_function& invoker,
+ const LLSD& params,
+ const LLSD& defaults);
+};
+
+/*****************************************************************************
+* LLEventDispatcher template implementation details
+*****************************************************************************/
+// Step 3 of parameter analysis, the recursive case.
+template<typename Function, class From, class To>
+struct LLEventDispatcher::invoker
+{
+ template<typename T>
+ struct remove_cv_ref
+ : boost::remove_cv< typename boost::remove_reference<T>::type >
+ { };
+
+ // apply() accepts an arbitrary boost::fusion sequence as args. It
+ // examines the next parameter type in the parameter-types sequence
+ // bounded by From and To, obtains the next LLSD object from the passed
+ // args_source and constructs an LLSDParam of appropriate type to try
+ // to convert the value. It then recurs with the next parameter-types
+ // iterator, passing the args sequence thus far.
+ template<typename Args>
+ static inline
+ void apply(Function func, const args_source& argsrc, Args const & args)
+ {
+ typedef typename boost::mpl::deref<From>::type arg_type;
+ typedef typename boost::mpl::next<From>::type next_iter_type;
+ typedef typename remove_cv_ref<arg_type>::type plain_arg_type;
+
+ invoker<Function, next_iter_type, To>::apply
+ ( func, argsrc, boost::fusion::push_back(args, LLSDParam<plain_arg_type>(argsrc())));
+ }
+
+ // Special treatment for instance (first) parameter of a non-static member
+ // function. Accept the instance-getter callable, calling that to produce
+ // the first args value. Since we know we're at the top of the recursion
+ // chain, we need not also require a partial args sequence from our caller.
+ template <typename InstanceGetter>
+ static inline
+ void method_apply(Function func, const args_source& argsrc, const InstanceGetter& getter)
+ {
+ typedef typename boost::mpl::next<From>::type next_iter_type;
+
+ // Instead of grabbing the first item from argsrc and making an
+ // LLSDParam of it, call getter() and pass that as the instance param.
+ invoker<Function, next_iter_type, To>::apply
+ ( func, argsrc, boost::fusion::push_back(boost::fusion::nil(), boost::ref(getter())));
+ }
+};
+
+// Step 4 of parameter analysis, the leaf case. When the general
+// invoker<Function, From, To> logic has advanced From until it matches To,
+// the compiler will pick this template specialization.
+template<typename Function, class To>
+struct LLEventDispatcher::invoker<Function,To,To>
+{
+ // the argument list is complete, now call the function
+ template<typename Args>
+ static inline
+ void apply(Function func, const args_source&, Args const & args)
+ {
+ boost::fusion::invoke(func, args);
}
};
+template<typename Function>
+typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Function f)
+{
+ // Construct an invoker_function, a callable accepting const args_source&.
+ // Add to DispatchMap an ArrayParamsDispatchEntry that will handle the
+ // caller's LLSD::Array.
+ addArrayParamsDispatchEntry(name, desc, make_invoker(f),
+ boost::function_types::function_arity<Function>::value);
+}
+
+template<typename Method, typename InstanceGetter>
+typename boost::enable_if< boost::function_types::is_member_function_pointer<Method> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Method f,
+ const InstanceGetter& getter)
+{
+ // Subtract 1 from the compile-time arity because the getter takes care of
+ // the first parameter. We only need (arity - 1) additional arguments.
+ addArrayParamsDispatchEntry(name, desc, make_invoker(f, getter),
+ boost::function_types::function_arity<Method>::value - 1);
+}
+
+template<typename Function>
+typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Function f,
+ const LLSD& params, const LLSD& defaults)
+{
+ // See comments for previous is_nonmember_callable_builtin add().
+ addMapParamsDispatchEntry(name, desc, make_invoker(f), params, defaults);
+}
+
+template<typename Method, typename InstanceGetter>
+typename boost::enable_if< boost::function_types::is_member_function_pointer<Method> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Method f,
+ const InstanceGetter& getter,
+ const LLSD& params, const LLSD& defaults)
+{
+ addMapParamsDispatchEntry(name, desc, make_invoker(f, getter), params, defaults);
+}
+
+template <typename Function>
+LLEventDispatcher::invoker_function
+LLEventDispatcher::make_invoker(Function f)
+{
+ // Step 1 of parameter analysis, the top of the recursion. Passing a
+ // suitable f (see add()'s enable_if condition) to this method causes it
+ // to infer the function type; specifying that function type to invoker<>
+ // causes it to fill in the begin/end MPL iterators over the function's
+ // list of parameter types.
+ // While normally invoker::apply() could infer its template type from the
+ // boost::fusion::nil parameter value, here we must be explicit since
+ // we're boost::bind()ing it rather than calling it directly.
+ return boost::bind(&invoker<Function>::template apply<boost::fusion::nil>,
+ f,
+ _1,
+ boost::fusion::nil());
+}
+
+template <typename Method, typename InstanceGetter>
+LLEventDispatcher::invoker_function
+LLEventDispatcher::make_invoker(Method f, const InstanceGetter& getter)
+{
+ // Use invoker::method_apply() to treat the instance (first) arg specially.
+ return boost::bind(&invoker<Method>::template method_apply<InstanceGetter>,
+ f,
+ _1,
+ getter);
+}
+
+/*****************************************************************************
+* LLDispatchListener
+*****************************************************************************/
/**
* Bundle an LLEventPump and a listener with an LLEventDispatcher. A class
* that contains (or derives from) LLDispatchListener need only specify the
diff --git a/indra/llcommon/llsdutil.cpp b/indra/llcommon/llsdutil.cpp
index f8f9ece058..803417d368 100644
--- a/indra/llcommon/llsdutil.cpp
+++ b/indra/llcommon/llsdutil.cpp
@@ -41,6 +41,7 @@
#include "llsdserialize.h"
#include "stringize.h"
+#include "is_approx_equal_fraction.h"
#include <map>
#include <set>
@@ -571,7 +572,7 @@ std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::str
return match_types(prototype.type(), TypeVector(), data.type(), pfx);
}
-bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
+bool llsd_equals(const LLSD& lhs, const LLSD& rhs, unsigned bits)
{
// We're comparing strict equality of LLSD representation rather than
// performing any conversions. So if the types aren't equal, the LLSD
@@ -588,6 +589,20 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
// Both are TypeUndefined. There's nothing more to know.
return true;
+ case LLSD::TypeReal:
+ // This is where the 'bits' argument comes in handy. If passed
+ // explicitly, it means to use is_approx_equal_fraction() to compare.
+ if (bits >= 0)
+ {
+ return is_approx_equal_fraction(lhs.asReal(), rhs.asReal(), bits);
+ }
+ // Otherwise we compare bit representations, and the usual caveats
+ // about comparing floating-point numbers apply. Omitting 'bits' when
+ // comparing Real values is only useful when we expect identical bit
+ // representation for a given Real value, e.g. for integer-valued
+ // Reals.
+ return (lhs.asReal() == rhs.asReal());
+
#define COMPARE_SCALAR(type) \
case LLSD::Type##type: \
/* LLSD::URI has operator!=() but not operator==() */ \
@@ -596,10 +611,6 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
COMPARE_SCALAR(Boolean);
COMPARE_SCALAR(Integer);
- // The usual caveats about comparing floating-point numbers apply. This is
- // only useful when we expect identical bit representation for a given
- // Real value, e.g. for integer-valued Reals.
- COMPARE_SCALAR(Real);
COMPARE_SCALAR(String);
COMPARE_SCALAR(UUID);
COMPARE_SCALAR(Date);
@@ -617,7 +628,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
for ( ; lai != laend && rai != raend; ++lai, ++rai)
{
// If any one array element is unequal, the arrays are unequal.
- if (! llsd_equals(*lai, *rai))
+ if (! llsd_equals(*lai, *rai, bits))
return false;
}
// Here we've reached the end of one or the other array. They're equal
@@ -644,7 +655,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
if (rhskeys.erase(lmi->first) != 1)
return false;
// Both maps have the current key. Compare values.
- if (! llsd_equals(lmi->second, rhs[lmi->first]))
+ if (! llsd_equals(lmi->second, rhs[lmi->first], bits))
return false;
}
// We've now established that all the lhs keys have equal values in
@@ -657,7 +668,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
// We expect that every possible type() value is specifically handled
// above. Failing to extend this switch to support a new LLSD type is
// an error that must be brought to the coder's attention.
- LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << "): "
+ LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << ", " << bits << "): "
"unknown type " << lhs.type() << LL_ENDL;
return false; // pacify the compiler
}
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h
index bb8c0690b1..65c7297cbf 100644
--- a/indra/llcommon/llsdutil.h
+++ b/indra/llcommon/llsdutil.h
@@ -123,8 +123,10 @@ LL_COMMON_API BOOL compare_llsd_with_template(
*/
LL_COMMON_API std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::string& pfx="");
-/// Deep equality
-LL_COMMON_API bool llsd_equals(const LLSD& lhs, const LLSD& rhs);
+/// Deep equality. If you want to compare LLSD::Real values for approximate
+/// equality rather than bitwise equality, pass @a bits as for
+/// is_approx_equal_fraction().
+LL_COMMON_API bool llsd_equals(const LLSD& lhs, const LLSD& rhs, unsigned bits=-1);
// Simple function to copy data out of input & output iterators if
// there is no need for casting.
@@ -138,4 +140,283 @@ template<typename Input> LLSD llsd_copy_array(Input iter, Input end)
return dest;
}
+/*****************************************************************************
+* LLSDArray
+*****************************************************************************/
+/**
+ * Construct an LLSD::Array inline, with implicit conversion to LLSD. Usage:
+ *
+ * @code
+ * void somefunc(const LLSD&);
+ * ...
+ * somefunc(LLSDArray("text")(17)(3.14));
+ * @endcode
+ *
+ * For completeness, LLSDArray() with no args constructs an empty array, so
+ * <tt>LLSDArray()("text")(17)(3.14)</tt> produces an array equivalent to the
+ * above. But for most purposes, LLSD() is already equivalent to an empty
+ * array, and if you explicitly want an empty isArray(), there's
+ * LLSD::emptyArray(). However, supporting a no-args LLSDArray() constructor
+ * follows the principle of least astonishment.
+ */
+class LLSDArray
+{
+public:
+ LLSDArray():
+ _data(LLSD::emptyArray())
+ {}
+
+ /**
+ * Need an explicit copy constructor. Consider the following:
+ *
+ * @code
+ * LLSD array_of_arrays(LLSDArray(LLSDArray(17)(34))
+ * (LLSDArray("x")("y")));
+ * @endcode
+ *
+ * The coder intends to construct [[17, 34], ["x", "y"]].
+ *
+ * With the compiler's implicit copy constructor, s/he gets instead
+ * [17, 34, ["x", "y"]].
+ *
+ * The expression LLSDArray(17)(34) constructs an LLSDArray with those two
+ * values. The reader assumes it should be converted to LLSD, as we always
+ * want with LLSDArray, before passing it to the @em outer LLSDArray
+ * constructor! This copy constructor makes that happen.
+ */
+ LLSDArray(const LLSDArray& inner):
+ _data(LLSD::emptyArray())
+ {
+ _data.append(inner);
+ }
+
+ LLSDArray(const LLSD& value):
+ _data(LLSD::emptyArray())
+ {
+ _data.append(value);
+ }
+
+ LLSDArray& operator()(const LLSD& value)
+ {
+ _data.append(value);
+ return *this;
+ }
+
+ operator LLSD() const { return _data; }
+ LLSD get() const { return _data; }
+
+private:
+ LLSD _data;
+};
+
+/*****************************************************************************
+* LLSDMap
+*****************************************************************************/
+/**
+ * Construct an LLSD::Map inline, with implicit conversion to LLSD. Usage:
+ *
+ * @code
+ * void somefunc(const LLSD&);
+ * ...
+ * somefunc(LLSDMap("alpha", "abc")("number", 17)("pi", 3.14));
+ * @endcode
+ *
+ * For completeness, LLSDMap() with no args constructs an empty map, so
+ * <tt>LLSDMap()("alpha", "abc")("number", 17)("pi", 3.14)</tt> produces a map
+ * equivalent to the above. But for most purposes, LLSD() is already
+ * equivalent to an empty map, and if you explicitly want an empty isMap(),
+ * there's LLSD::emptyMap(). However, supporting a no-args LLSDMap()
+ * constructor follows the principle of least astonishment.
+ */
+class LLSDMap
+{
+public:
+ LLSDMap():
+ _data(LLSD::emptyMap())
+ {}
+ LLSDMap(const LLSD::String& key, const LLSD& value):
+ _data(LLSD::emptyMap())
+ {
+ _data[key] = value;
+ }
+
+ LLSDMap& operator()(const LLSD::String& key, const LLSD& value)
+ {
+ _data[key] = value;
+ return *this;
+ }
+
+ operator LLSD() const { return _data; }
+ LLSD get() const { return _data; }
+
+private:
+ LLSD _data;
+};
+
+/*****************************************************************************
+* LLSDParam
+*****************************************************************************/
+/**
+ * LLSDParam is a customization point for passing LLSD values to function
+ * parameters of more or less arbitrary type. LLSD provides a small set of
+ * native conversions; but if a generic algorithm explicitly constructs an
+ * LLSDParam object in the function's argument list, a consumer can provide
+ * LLSDParam specializations to support more different parameter types than
+ * LLSD's native conversions.
+ *
+ * Usage:
+ *
+ * @code
+ * void somefunc(const paramtype&);
+ * ...
+ * somefunc(..., LLSDParam<paramtype>(someLLSD), ...);
+ * @endcode
+ */
+template <typename T>
+class LLSDParam
+{
+public:
+ /**
+ * Default implementation converts to T on construction, saves converted
+ * value for later retrieval
+ */
+ LLSDParam(const LLSD& value):
+ _value(value)
+ {}
+
+ operator T() const { return _value; }
+
+private:
+ T _value;
+};
+
+/**
+ * Turns out that several target types could accept an LLSD param using any of
+ * a few different conversions, e.g. LLUUID's constructor can accept LLUUID or
+ * std::string. Therefore, the compiler can't decide which LLSD conversion
+ * operator to choose, even though to us it seems obvious. But that's okay, we
+ * can specialize LLSDParam for such target types, explicitly specifying the
+ * desired conversion -- that's part of what LLSDParam is all about. Turns out
+ * we have to do that enough to make it worthwhile generalizing. Use a macro
+ * because I need to specify one of the asReal, etc., explicit conversion
+ * methods as well as a type. If I'm overlooking a clever way to implement
+ * that using a template instead, feel free to reimplement.
+ */
+#define LLSDParam_for(T, AS) \
+template <> \
+class LLSDParam<T> \
+{ \
+public: \
+ LLSDParam(const LLSD& value): \
+ _value(value.AS()) \
+ {} \
+ \
+ operator T() const { return _value; } \
+ \
+private: \
+ T _value; \
+}
+
+LLSDParam_for(float, asReal);
+LLSDParam_for(LLUUID, asUUID);
+LLSDParam_for(LLDate, asDate);
+LLSDParam_for(LLURI, asURI);
+LLSDParam_for(LLSD::Binary, asBinary);
+
+/**
+ * LLSDParam<const char*> is an example of the kind of conversion you can
+ * support with LLSDParam beyond native LLSD conversions. Normally you can't
+ * pass an LLSD object to a function accepting const char* -- but you can
+ * safely pass an LLSDParam<const char*>(yourLLSD).
+ */
+template <>
+class LLSDParam<const char*>
+{
+private:
+ // The difference here is that we store a std::string rather than a const
+ // char*. It's important that the LLSDParam object own the std::string.
+ std::string _value;
+ // We don't bother storing the incoming LLSD object, but we do have to
+ // distinguish whether _value is an empty string because the LLSD object
+ // contains an empty string or because it's isUndefined().
+ bool _undefined;
+
+public:
+ LLSDParam(const LLSD& value):
+ _value(value),
+ _undefined(value.isUndefined())
+ {}
+
+ // The const char* we retrieve is for storage owned by our _value member.
+ // That's how we guarantee that the const char* is valid for the lifetime
+ // of this LLSDParam object. Constructing your LLSDParam in the argument
+ // list should ensure that the LLSDParam object will persist for the
+ // duration of the function call.
+ operator const char*() const
+ {
+ if (_undefined)
+ {
+ // By default, an isUndefined() LLSD object's asString() method
+ // will produce an empty string. But for a function accepting
+ // const char*, it's often important to be able to pass NULL, and
+ // isUndefined() seems like the best way. If you want to pass an
+ // empty string, you can still pass LLSD(""). Without this special
+ // case, though, no LLSD value could pass NULL.
+ return NULL;
+ }
+ return _value.c_str();
+ }
+};
+
+namespace llsd
+{
+
+/*****************************************************************************
+* BOOST_FOREACH() helpers for LLSD
+*****************************************************************************/
+/// Usage: BOOST_FOREACH(LLSD item, inArray(someLLSDarray)) { ... }
+class inArray
+{
+public:
+ inArray(const LLSD& array):
+ _array(array)
+ {}
+
+ typedef LLSD::array_const_iterator const_iterator;
+ typedef LLSD::array_iterator iterator;
+
+ iterator begin() { return _array.beginArray(); }
+ iterator end() { return _array.endArray(); }
+ const_iterator begin() const { return _array.beginArray(); }
+ const_iterator end() const { return _array.endArray(); }
+
+private:
+ LLSD _array;
+};
+
+/// MapEntry is what you get from dereferencing an LLSD::map_[const_]iterator.
+typedef std::map<LLSD::String, LLSD>::value_type MapEntry;
+
+/// Usage: BOOST_FOREACH([const] MapEntry& e, inMap(someLLSDmap)) { ... }
+class inMap
+{
+public:
+ inMap(const LLSD& map):
+ _map(map)
+ {}
+
+ typedef LLSD::map_const_iterator const_iterator;
+ typedef LLSD::map_iterator iterator;
+
+ iterator begin() { return _map.beginMap(); }
+ iterator end() { return _map.endMap(); }
+ const_iterator begin() const { return _map.beginMap(); }
+ const_iterator end() const { return _map.endMap(); }
+
+private:
+ LLSD _map;
+};
+
+} // namespace llsd
+
#endif // LL_LLSDUTIL_H
diff --git a/indra/llcommon/tests/lleventdispatcher_test.cpp b/indra/llcommon/tests/lleventdispatcher_test.cpp
new file mode 100644
index 0000000000..263c9b171f
--- /dev/null
+++ b/indra/llcommon/tests/lleventdispatcher_test.cpp
@@ -0,0 +1,1324 @@
+/**
+ * @file lleventdispatcher_test.cpp
+ * @author Nat Goodspeed
+ * @date 2011-01-20
+ * @brief Test for lleventdispatcher.
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Copyright (c) 2011, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+// Precompiled header
+#include "linden_common.h"
+// associated header
+#include "lleventdispatcher.h"
+// STL headers
+// std headers
+// external library headers
+// other Linden headers
+#include "../test/lltut.h"
+#include "llsd.h"
+#include "llsdutil.h"
+#include "stringize.h"
+#include "tests/wrapllerrs.h"
+
+#include <map>
+#include <string>
+#include <stdexcept>
+
+#include <boost/bind.hpp>
+#include <boost/function.hpp>
+#include <boost/range.hpp>
+#include <boost/foreach.hpp>
+#define foreach BOOST_FOREACH
+
+#include <boost/lambda/lambda.hpp>
+
+#include <iostream>
+#include <iomanip>
+
+using boost::lambda::constant;
+using boost::lambda::constant_ref;
+using boost::lambda::var;
+
+using namespace llsd;
+
+/*****************************************************************************
+* Output control
+*****************************************************************************/
+#ifdef DEBUG_ON
+using std::cout;
+#else
+static std::ostringstream cout;
+#endif
+
+/*****************************************************************************
+* Example data, functions, classes
+*****************************************************************************/
+// We don't need a whole lot of different arbitrary-params methods, just (no |
+// (const LLSD&) | arbitrary) args (function | static method | non-static
+// method), where 'arbitrary' is (every LLSD datatype + (const char*)).
+// But we need to register each one under different names for the different
+// registration styles. Don't forget LLEventDispatcher subclass methods(const
+// LLSD&).
+
+// However, the number of target parameter conversions we want to try exceeds
+// boost::fusion::invoke()'s supported parameter-list size. Break out two
+// different lists.
+#define NPARAMSa bool b, int i, float f, double d, const char* cp
+#define NPARAMSb const std::string& s, const LLUUID& uuid, const LLDate& date, \
+ const LLURI& uri, const std::vector<U8>& bin
+#define NARGSa b, i, f, d, cp
+#define NARGSb s, uuid, date, uri, bin
+
+// For some registration methods we need methods on a subclass of
+// LLEventDispatcher. To simplify things, we'll use this Dispatcher subclass
+// for all our testing, including testing its own methods.
+class Dispatcher: public LLEventDispatcher
+{
+public:
+ Dispatcher(const std::string& name, const std::string& key):
+ LLEventDispatcher(name, key)
+ {}
+
+ // sensing member, mutable because we want to know when we've reached our
+ // const method too
+ mutable LLSD llsd;
+
+ void method1(const LLSD& obj) { llsd = obj; }
+ void cmethod1(const LLSD& obj) const { llsd = obj; }
+};
+
+// sensing vars, captured in a struct to make it convenient to clear them
+struct Vars
+{
+ LLSD llsd;
+ bool b;
+ int i;
+ float f;
+ double d;
+ // Capture param passed as char*. But merely storing a char* received from
+ // our caller, possibly the .c_str() from a concatenation expression,
+ // would be Bad: the pointer will be invalidated long before we can query
+ // it. We could allocate a new chunk of memory, copy the string data and
+ // point to that instead -- but hey, guess what, we already have a class
+ // that does that!
+ std::string cp;
+ std::string s;
+ LLUUID uuid;
+ LLDate date;
+ LLURI uri;
+ std::vector<U8> bin;
+
+ Vars():
+ // Only need to initialize the POD types, the rest should take care of
+ // default-constructing themselves.
+ b(false),
+ i(0),
+ f(0),
+ d(0)
+ {}
+
+ // Detect any non-default values for convenient testing
+ LLSD inspect() const
+ {
+ LLSD result;
+
+ if (llsd.isDefined())
+ result["llsd"] = llsd;
+ if (b)
+ result["b"] = b;
+ if (i)
+ result["i"] = i;
+ if (f)
+ result["f"] = f;
+ if (d)
+ result["d"] = d;
+ if (! cp.empty())
+ result["cp"] = cp;
+ if (! s.empty())
+ result["s"] = s;
+ if (uuid != LLUUID())
+ result["uuid"] = uuid;
+ if (date != LLDate())
+ result["date"] = date;
+ if (uri != LLURI())
+ result["uri"] = uri;
+ if (! bin.empty())
+ result["bin"] = bin;
+
+ return result;
+ }
+
+ /*------------- no-args (non-const, const, static) methods -------------*/
+ void method0()
+ {
+ cout << "method0()\n";
+ i = 17;
+ }
+
+ void cmethod0() const
+ {
+ cout << 'c';
+ const_cast<Vars*>(this)->method0();
+ }
+
+ static void smethod0();
+
+ /*------------ Callable (non-const, const, static) methods -------------*/
+ void method1(const LLSD& obj)
+ {
+ cout << "method1(" << obj << ")\n";
+ llsd = obj;
+ }
+
+ void cmethod1(const LLSD& obj) const
+ {
+ cout << 'c';
+ const_cast<Vars*>(this)->method1(obj);
+ }
+
+ static void smethod1(const LLSD& obj);
+
+ /*-------- Arbitrary-params (non-const, const, static) methods ---------*/
+ void methodna(NPARAMSa)
+ {
+ // Because our const char* param cp might be NULL, and because we
+ // intend to capture the value in a std::string, have to distinguish
+ // between the NULL value and any non-NULL value. Use a convention
+ // easy for a human reader: enclose any non-NULL value in single
+ // quotes, reserving the unquoted string "NULL" to represent a NULL ptr.
+ std::string vcp;
+ if (cp == NULL)
+ vcp = "NULL";
+ else
+ vcp = std::string("'") + cp + "'";
+
+ cout << "methodna(" << b
+ << ", " << i
+ << ", " << f
+ << ", " << d
+ << ", " << vcp
+ << ")\n";
+
+ this->b = b;
+ this->i = i;
+ this->f = f;
+ this->d = d;
+ this->cp = vcp;
+ }
+
+ void methodnb(NPARAMSb)
+ {
+ std::ostringstream vbin;
+ foreach(U8 byte, bin)
+ {
+ vbin << std::hex << std::setfill('0') << std::setw(2) << unsigned(byte);
+ }
+
+ cout << "methodnb(" << "'" << s << "'"
+ << ", " << uuid
+ << ", " << date
+ << ", '" << uri << "'"
+ << ", " << vbin.str()
+ << ")\n";
+
+ this->s = s;
+ this->uuid = uuid;
+ this->date = date;
+ this->uri = uri;
+ this->bin = bin;
+ }
+
+ void cmethodna(NPARAMSa) const
+ {
+ cout << 'c';
+ const_cast<Vars*>(this)->methodna(NARGSa);
+ }
+
+ void cmethodnb(NPARAMSb) const
+ {
+ cout << 'c';
+ const_cast<Vars*>(this)->methodnb(NARGSb);
+ }
+
+ static void smethodna(NPARAMSa);
+ static void smethodnb(NPARAMSb);
+};
+/*------- Global Vars instance for free functions and static methods -------*/
+static Vars g;
+
+/*------------ Static Vars method implementations reference 'g' ------------*/
+void Vars::smethod0()
+{
+ cout << "smethod0() -> ";
+ g.method0();
+}
+
+void Vars::smethod1(const LLSD& obj)
+{
+ cout << "smethod1(" << obj << ") -> ";
+ g.method1(obj);
+}
+
+void Vars::smethodna(NPARAMSa)
+{
+ cout << "smethodna(...) -> ";
+ g.methodna(NARGSa);
+}
+
+void Vars::smethodnb(NPARAMSb)
+{
+ cout << "smethodnb(...) -> ";
+ g.methodnb(NARGSb);
+}
+
+/*--------------------------- Reset global Vars ----------------------------*/
+void clear()
+{
+ g = Vars();
+}
+
+/*------------------- Free functions also reference 'g' --------------------*/
+void free0()
+{
+ cout << "free0() -> ";
+ g.method0();
+}
+
+void free1(const LLSD& obj)
+{
+ cout << "free1(" << obj << ") -> ";
+ g.method1(obj);
+}
+
+void freena(NPARAMSa)
+{
+ cout << "freena(...) -> ";
+ g.methodna(NARGSa);
+}
+
+void freenb(NPARAMSb)
+{
+ cout << "freenb(...) -> ";
+ g.methodnb(NARGSb);
+}
+
+/*****************************************************************************
+* TUT
+*****************************************************************************/
+namespace tut
+{
+ struct lleventdispatcher_data
+ {
+ WrapLL_ERRS redirect;
+ Dispatcher work;
+ Vars v;
+ std::string name, desc;
+ // Capture our own copy of all registered functions' descriptions
+ typedef std::map<std::string, std::string> DescMap;
+ DescMap descs;
+ // Capture the Vars instance on which we expect each function to operate
+ typedef std::map<std::string, Vars*> VarsMap;
+ VarsMap funcvars;
+ // Required structure for Callables with requirements
+ LLSD required;
+ // Parameter names for freena(), freenb()
+ LLSD params;
+ // Full, partial defaults arrays for params for freena(), freenb()
+ LLSD dft_array_full, dft_array_partial;
+ // Start index of partial defaults arrays
+ const LLSD::Integer partial_offset;
+ // Full, partial defaults maps for params for freena(), freenb()
+ LLSD dft_map_full, dft_map_partial;
+ // Most of the above are indexed by "a" or "b". Useful to have an
+ // array containing those strings for iterating.
+ std::vector<LLSD::String> ab;
+
+ lleventdispatcher_data():
+ work("test dispatcher", "op"),
+ // map {d=double, array=[3 elements]}
+ required(LLSDMap("d", LLSD::Real(0))("array", LLSDArray(LLSD())(LLSD())(LLSD()))),
+ // first several params are required, last couple optional
+ partial_offset(3)
+ {
+ // This object is reconstructed for every test<n> method. But
+ // clear global variables every time too.
+ ::clear();
+
+ const char* abs[] = { "a", "b" };
+ ab.assign(boost::begin(abs), boost::end(abs));
+
+ // Registration cases:
+ // - (Callable | subclass const method | subclass non-const method |
+ // non-subclass method) (with | without) required
+ // - (Free function | static method | non-static method), (no | arbitrary) params,
+ // array style
+ // - (Free function | static method | non-static method), (no | arbitrary) params,
+ // map style, (empty | partial | full) (array | map) defaults
+ // - Map-style errors:
+ // - (scalar | map) param names
+ // - defaults scalar
+ // - defaults array longer than params array
+ // - defaults map with plural unknown param names
+
+ // I hate to have to write things twice, because of having to keep
+ // them consistent. If we had variadic functions, addf() would be
+ // a variadic method, capturing the name and desc and passing them
+ // plus "everything else" to work.add(). If I could return a pair
+ // and use that pair as the first two args to work.add(), I'd do
+ // that. But the best I can do with present C++ is to set two
+ // instance variables as a side effect of addf(), and pass those
+ // variables to each work.add() call. :-P
+
+ /*------------------------- Callables --------------------------*/
+
+ // Arbitrary Callable with/out required params
+ addf("free1", "free1", &g);
+ work.add(name, desc, free1);
+ addf("free1_req", "free1", &g);
+ work.add(name, desc, free1, required);
+ // Subclass non-const method with/out required params
+ addf("Dmethod1", "method1", NULL);
+ work.add(name, desc, &Dispatcher::method1);
+ addf("Dmethod1_req", "method1", NULL);
+ work.add(name, desc, &Dispatcher::method1, required);
+ // Subclass const method with/out required params
+ addf("Dcmethod1", "cmethod1", NULL);
+ work.add(name, desc, &Dispatcher::cmethod1);
+ addf("Dcmethod1_req", "cmethod1", NULL);
+ work.add(name, desc, &Dispatcher::cmethod1, required);
+ // Non-subclass method with/out required params
+ addf("method1", "method1", &v);
+ work.add(name, desc, boost::bind(&Vars::method1, boost::ref(v), _1));
+ addf("method1_req", "method1", &v);
+ work.add(name, desc, boost::bind(&Vars::method1, boost::ref(v), _1), required);
+
+ /*--------------- Arbitrary params, array style ----------------*/
+
+ // (Free function | static method) with (no | arbitrary) params, array style
+ addf("free0_array", "free0", &g);
+ work.add(name, desc, free0);
+ addf("freena_array", "freena", &g);
+ work.add(name, desc, freena);
+ addf("freenb_array", "freenb", &g);
+ work.add(name, desc, freenb);
+ addf("smethod0_array", "smethod0", &g);
+ work.add(name, desc, &Vars::smethod0);
+ addf("smethodna_array", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna);
+ addf("smethodnb_array", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb);
+ // Non-static method with (no | arbitrary) params, array style
+ addf("method0_array", "method0", &v);
+ work.add(name, desc, &Vars::method0, boost::lambda::var(v));
+ addf("methodna_array", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, boost::lambda::var(v));
+ addf("methodnb_array", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, boost::lambda::var(v));
+
+ /*---------------- Arbitrary params, map style -----------------*/
+
+ // We lay out each params list as an array, also each array of
+ // default values we'll register. We'll zip these into
+ // (param=value) maps. Why not define them as maps and just
+ // extract the keys and values to arrays? Because that wouldn't
+ // give us the right params-list order.
+
+ // freena(), methodna(), cmethodna(), smethodna() all take same param list.
+ // Same for freenb() et al.
+ params = LLSDMap("a", LLSDArray("b")("i")("f")("d")("cp"))
+ ("b", LLSDArray("s")("uuid")("date")("uri")("bin"));
+ cout << "params:\n" << params << "\nparams[\"a\"]:\n" << params["a"] << "\nparams[\"b\"]:\n" << params["b"] << std::endl;
+ // default LLSD::Binary value
+ std::vector<U8> binary;
+ for (size_t ix = 0, h = 0xaa; ix < 6; ++ix, h += 0x11)
+ {
+ binary.push_back(h);
+ }
+ // Full defaults arrays. We actually don't care what the LLUUID or
+ // LLDate values are, as long as they're different from the
+ // LLUUID() and LLDate() default values so inspect() will report
+ // them.
+ dft_array_full = LLSDMap("a", LLSDArray(true)(17)(3.14)(123456.78)("classic"))
+ ("b", LLSDArray("string")
+ (LLUUID::generateNewID())
+ (LLDate::now())
+ (LLURI("http://www.ietf.org/rfc/rfc3986.txt"))
+ (binary));
+ cout << "dft_array_full:\n" << dft_array_full << std::endl;
+ // Partial defaults arrays.
+ foreach(LLSD::String a, ab)
+ {
+ LLSD::Integer partition(std::min(partial_offset, dft_array_full[a].size()));
+ dft_array_partial[a] =
+ llsd_copy_array(dft_array_full[a].beginArray() + partition,
+ dft_array_full[a].endArray());
+ }
+ cout << "dft_array_partial:\n" << dft_array_partial << std::endl;
+
+ foreach(LLSD::String a, ab)
+ {
+ // Generate full defaults maps by zipping (params, dft_array_full).
+ dft_map_full[a] = zipmap(params[a], dft_array_full[a]);
+
+ // Generate partial defaults map by zipping alternate entries from
+ // (params, dft_array_full). Part of the point of using map-style
+ // defaults is to allow any subset of the target function's
+ // parameters to be optional, not just the rightmost.
+ for (LLSD::Integer ix = 0, ixend = params[a].size(); ix < ixend; ix += 2)
+ {
+ dft_map_partial[a][params[a][ix].asString()] = dft_array_full[a][ix];
+ }
+ }
+ cout << "dft_map_full:\n" << dft_map_full << "\ndft_map_partial:\n" << dft_map_partial << '\n';
+
+ // (Free function | static method) with (no | arbitrary) params,
+ // map style, no (empty array) defaults
+ addf("free0_map", "free0", &g);
+ work.add(name, desc, free0, LLSD::emptyArray());
+ addf("smethod0_map", "smethod0", &g);
+ work.add(name, desc, &Vars::smethod0, LLSD::emptyArray());
+ addf("freena_map_allreq", "freena", &g);
+ work.add(name, desc, freena, params["a"]);
+ addf("freenb_map_allreq", "freenb", &g);
+ work.add(name, desc, freenb, params["b"]);
+ addf("smethodna_map_allreq", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna, params["a"]);
+ addf("smethodnb_map_allreq", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb, params["b"]);
+ // Non-static method with (no | arbitrary) params, map style, no
+ // (empty array) defaults
+ addf("method0_map", "method0", &v);
+ work.add(name, desc, &Vars::method0, var(v), LLSD::emptyArray());
+ addf("methodna_map_allreq", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, var(v), params["a"]);
+ addf("methodnb_map_allreq", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, var(v), params["b"]);
+
+ // Except for the "more (array | map) defaults than params" error
+ // cases, tested separately below, the (partial | full)(array |
+ // map) defaults cases don't apply to no-params functions/methods.
+ // So eliminate free0, smethod0, method0 from the cases below.
+
+ // (Free function | static method) with arbitrary params, map
+ // style, partial (array | map) defaults
+ addf("freena_map_leftreq", "freena", &g);
+ work.add(name, desc, freena, params["a"], dft_array_partial["a"]);
+ addf("freenb_map_leftreq", "freenb", &g);
+ work.add(name, desc, freenb, params["b"], dft_array_partial["b"]);
+ addf("smethodna_map_leftreq", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna, params["a"], dft_array_partial["a"]);
+ addf("smethodnb_map_leftreq", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb, params["b"], dft_array_partial["b"]);
+ addf("freena_map_skipreq", "freena", &g);
+ work.add(name, desc, freena, params["a"], dft_map_partial["a"]);
+ addf("freenb_map_skipreq", "freenb", &g);
+ work.add(name, desc, freenb, params["b"], dft_map_partial["b"]);
+ addf("smethodna_map_skipreq", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna, params["a"], dft_map_partial["a"]);
+ addf("smethodnb_map_skipreq", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb, params["b"], dft_map_partial["b"]);
+ // Non-static method with arbitrary params, map style, partial
+ // (array | map) defaults
+ addf("methodna_map_leftreq", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_array_partial["a"]);
+ addf("methodnb_map_leftreq", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_array_partial["b"]);
+ addf("methodna_map_skipreq", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_map_partial["a"]);
+ addf("methodnb_map_skipreq", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_map_partial["b"]);
+
+ // (Free function | static method) with arbitrary params, map
+ // style, full (array | map) defaults
+ addf("freena_map_adft", "freena", &g);
+ work.add(name, desc, freena, params["a"], dft_array_full["a"]);
+ addf("freenb_map_adft", "freenb", &g);
+ work.add(name, desc, freenb, params["b"], dft_array_full["b"]);
+ addf("smethodna_map_adft", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna, params["a"], dft_array_full["a"]);
+ addf("smethodnb_map_adft", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb, params["b"], dft_array_full["b"]);
+ addf("freena_map_mdft", "freena", &g);
+ work.add(name, desc, freena, params["a"], dft_map_full["a"]);
+ addf("freenb_map_mdft", "freenb", &g);
+ work.add(name, desc, freenb, params["b"], dft_map_full["b"]);
+ addf("smethodna_map_mdft", "smethodna", &g);
+ work.add(name, desc, &Vars::smethodna, params["a"], dft_map_full["a"]);
+ addf("smethodnb_map_mdft", "smethodnb", &g);
+ work.add(name, desc, &Vars::smethodnb, params["b"], dft_map_full["b"]);
+ // Non-static method with arbitrary params, map style, full
+ // (array | map) defaults
+ addf("methodna_map_adft", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_array_full["a"]);
+ addf("methodnb_map_adft", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_array_full["b"]);
+ addf("methodna_map_mdft", "methodna", &v);
+ work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_map_full["a"]);
+ addf("methodnb_map_mdft", "methodnb", &v);
+ work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_map_full["b"]);
+
+ // All the above are expected to succeed, and are setup for the
+ // tests to follow. Registration error cases are exercised as
+ // tests rather than as test setup.
+ }
+
+ void addf(const std::string& n, const std::string& d, Vars* v)
+ {
+ // This method is to capture in our own DescMap the name and
+ // description of every registered function, for metadata query
+ // testing.
+ descs[n] = d;
+ // Also capture the Vars instance on which each function should operate.
+ funcvars[n] = v;
+ // See constructor for rationale for setting these instance vars.
+ this->name = n;
+ this->desc = d;
+ }
+
+ void verify_descs()
+ {
+ // Copy descs to a temp map of same type.
+ DescMap forgotten(descs.begin(), descs.end());
+ // LLEventDispatcher intentionally provides only const_iterator:
+ // since dereferencing that iterator generates values on the fly,
+ // it's meaningless to have a modifiable iterator. But since our
+ // 'work' object isn't const, by default BOOST_FOREACH() wants to
+ // use non-const iterators. Persuade it to use the const_iterator.
+ foreach(LLEventDispatcher::NameDesc nd, const_cast<const Dispatcher&>(work))
+ {
+ DescMap::iterator found = forgotten.find(nd.first);
+ ensure(STRINGIZE("LLEventDispatcher records function '" << nd.first
+ << "' we didn't enter"),
+ found != forgotten.end());
+ ensure_equals(STRINGIZE("LLEventDispatcher desc '" << nd.second <<
+ "' doesn't match what we entered: '" << found->second << "'"),
+ nd.second, found->second);
+ // found in our map the name from LLEventDispatcher, good, erase
+ // our map entry
+ forgotten.erase(found);
+ }
+ if (! forgotten.empty())
+ {
+ std::ostringstream out;
+ out << "LLEventDispatcher failed to report";
+ const char* delim = ": ";
+ foreach(const DescMap::value_type& fme, forgotten)
+ {
+ out << delim << fme.first;
+ delim = ", ";
+ }
+ ensure(out.str(), false);
+ }
+ }
+
+ Vars* varsfor(const std::string& name)
+ {
+ VarsMap::const_iterator found = funcvars.find(name);
+ ensure(STRINGIZE("No Vars* for " << name), found != funcvars.end());
+ ensure(STRINGIZE("NULL Vars* for " << name), found->second);
+ return found->second;
+ }
+
+ void ensure_has(const std::string& outer, const std::string& inner)
+ {
+ ensure(STRINGIZE("'" << outer << "' does not contain '" << inner << "'").c_str(),
+ outer.find(inner) != std::string::npos);
+ }
+
+ void call_exc(const std::string& func, const LLSD& args, const std::string& exc_frag)
+ {
+ std::string threw;
+ try
+ {
+ work(func, args);
+ }
+ catch (const std::runtime_error& e)
+ {
+ cout << "*** " << e.what() << '\n';
+ threw = e.what();
+ }
+ ensure_has(threw, exc_frag);
+ }
+
+ LLSD getMetadata(const std::string& name)
+ {
+ LLSD meta(work.getMetadata(name));
+ ensure(STRINGIZE("No metadata for " << name), meta.isDefined());
+ return meta;
+ }
+
+ // From two related LLSD arrays, e.g. a param-names array and a values
+ // array, zip them together into an LLSD map.
+ LLSD zipmap(const LLSD& keys, const LLSD& values)
+ {
+ LLSD map;
+ for (LLSD::Integer i = 0, iend = keys.size(); i < iend; ++i)
+ {
+ // Have to select asString() since you can index an LLSD
+ // object with either String or Integer.
+ map[keys[i].asString()] = values[i];
+ }
+ return map;
+ }
+
+ // If I call this ensure_equals(), it blocks visibility of all other
+ // ensure_equals() overloads. Normally I could say 'using
+ // baseclass::ensure_equals;' and fix that, but I don't know what the
+ // base class is!
+ void ensure_llsd(const std::string& msg, const LLSD& actual, const LLSD& expected, U32 bits)
+ {
+ std::ostringstream out;
+ if (! msg.empty())
+ {
+ out << msg << ": ";
+ }
+ out << "expected " << expected << ", actual " << actual;
+ ensure(out.str(), llsd_equals(actual, expected, bits));
+ }
+
+ void ensure_llsd(const LLSD& actual, const LLSD& expected, U32 bits)
+ {
+ ensure_llsd("", actual, expected, bits);
+ }
+ };
+ typedef test_group<lleventdispatcher_data> lleventdispatcher_group;
+ typedef lleventdispatcher_group::object object;
+ lleventdispatcher_group lleventdispatchergrp("lleventdispatcher");
+
+ // Call cases:
+ // - (try_call | call) (explicit name | event key) (real | bogus) name
+ // - Callable with args that (do | do not) match required
+ // - (Free function | non-static method), no args, (array | map) style
+ // - (Free function | non-static method), arbitrary args,
+ // (array style with (scalar | map) | map style with scalar)
+ // - (Free function | non-static method), arbitrary args, array style with
+ // array (too short | too long | just right)
+ // [trap LL_WARNS for too-long case?]
+ // - (Free function | non-static method), arbitrary args, map style with
+ // (array | map) (all | too many | holes (with | without) defaults)
+ // - const char* param gets ("" | NULL)
+
+ // Query cases:
+ // - Iterate over all (with | without) remove()
+ // - getDispatchKey()
+ // - Callable style (with | without) required
+ // - (Free function | non-static method), array style, (no | arbitrary) params
+ // - (Free function | non-static method), map style, (no | arbitrary) params,
+ // (empty | full | partial (array | map)) defaults
+
+ template<> template<>
+ void object::test<1>()
+ {
+ set_test_name("map-style registration with non-array params");
+ // Pass "param names" as scalar or as map
+ LLSD attempts(LLSDArray(17)(LLSDMap("pi", 3.14)("two", 2)));
+ foreach(LLSD ae, inArray(attempts))
+ {
+ std::string threw;
+ try
+ {
+ work.add("freena_err", "freena", freena, ae);
+ }
+ catch (const std::exception& e)
+ {
+ threw = e.what();
+ }
+ ensure_has(threw, "must be an array");
+ }
+ }
+
+ template<> template<>
+ void object::test<2>()
+ {
+ set_test_name("map-style registration with badly-formed defaults");
+ std::string threw;
+ try
+ {
+ work.add("freena_err", "freena", freena, LLSDArray("a")("b"), 17);
+ }
+ catch (const std::exception& e)
+ {
+ threw = e.what();
+ }
+ ensure_has(threw, "must be a map or an array");
+ }
+
+ template<> template<>
+ void object::test<3>()
+ {
+ set_test_name("map-style registration with too many array defaults");
+ std::string threw;
+ try
+ {
+ work.add("freena_err", "freena", freena,
+ LLSDArray("a")("b"),
+ LLSDArray(17)(0.9)("gack"));
+ }
+ catch (const std::exception& e)
+ {
+ threw = e.what();
+ }
+ ensure_has(threw, "shorter than");
+ }
+
+ template<> template<>
+ void object::test<4>()
+ {
+ set_test_name("map-style registration with too many map defaults");
+ std::string threw;
+ try
+ {
+ work.add("freena_err", "freena", freena,
+ LLSDArray("a")("b"),
+ LLSDMap("b", 17)("foo", 3.14)("bar", "sinister"));
+ }
+ catch (const std::exception& e)
+ {
+ threw = e.what();
+ }
+ ensure_has(threw, "nonexistent params");
+ ensure_has(threw, "foo");
+ ensure_has(threw, "bar");
+ }
+
+ template<> template<>
+ void object::test<5>()
+ {
+ set_test_name("query all");
+ verify_descs();
+ }
+
+ template<> template<>
+ void object::test<6>()
+ {
+ set_test_name("query all with remove()");
+ ensure("remove('bogus') returned true", ! work.remove("bogus"));
+ ensure("remove('real') returned false", work.remove("free1"));
+ // Of course, remove that from 'descs' too...
+ descs.erase("free1");
+ verify_descs();
+ }
+
+ template<> template<>
+ void object::test<7>()
+ {
+ set_test_name("getDispatchKey()");
+ ensure_equals(work.getDispatchKey(), "op");
+ }
+
+ template<> template<>
+ void object::test<8>()
+ {
+ set_test_name("query Callables with/out required params");
+ LLSD names(LLSDArray("free1")("Dmethod1")("Dcmethod1")("method1"));
+ foreach(LLSD nm, inArray(names))
+ {
+ LLSD metadata(getMetadata(nm));
+ ensure_equals("name mismatch", metadata["name"], nm);
+ ensure_equals(metadata["desc"].asString(), descs[nm]);
+ ensure("should not have required structure", metadata["required"].isUndefined());
+ ensure("should not have optional", metadata["optional"].isUndefined());
+
+ std::string name_req(nm.asString() + "_req");
+ metadata = getMetadata(name_req);
+ ensure_equals(metadata["name"].asString(), name_req);
+ ensure_equals(metadata["desc"].asString(), descs[name_req]);
+ ensure_equals("required mismatch", required, metadata["required"]);
+ ensure("should not have optional", metadata["optional"].isUndefined());
+ }
+ }
+
+ template<> template<>
+ void object::test<9>()
+ {
+ set_test_name("query array-style functions/methods");
+ // Associate each registered name with expected arity.
+ LLSD expected(LLSDArray
+ (LLSDArray
+ (0)(LLSDArray("free0_array")("smethod0_array")("method0_array")))
+ (LLSDArray
+ (5)(LLSDArray("freena_array")("smethodna_array")("methodna_array")))
+ (LLSDArray
+ (5)(LLSDArray("freenb_array")("smethodnb_array")("methodnb_array"))));
+ foreach(LLSD ae, inArray(expected))
+ {
+ LLSD::Integer arity(ae[0].asInteger());
+ LLSD names(ae[1]);
+ LLSD req(LLSD::emptyArray());
+ if (arity)
+ req[arity - 1] = LLSD();
+ foreach(LLSD nm, inArray(names))
+ {
+ LLSD metadata(getMetadata(nm));
+ ensure_equals("name mismatch", metadata["name"], nm);
+ ensure_equals(metadata["desc"].asString(), descs[nm]);
+ ensure_equals(STRINGIZE("mismatched required for " << nm.asString()),
+ metadata["required"], req);
+ ensure("should not have optional", metadata["optional"].isUndefined());
+ }
+ }
+ }
+
+ template<> template<>
+ void object::test<10>()
+ {
+ set_test_name("query map-style no-params functions/methods");
+ // - (Free function | non-static method), map style, no params (ergo
+ // no defaults)
+ LLSD names(LLSDArray("free0_map")("smethod0_map")("method0_map"));
+ foreach(LLSD nm, inArray(names))
+ {
+ LLSD metadata(getMetadata(nm));
+ ensure_equals("name mismatch", metadata["name"], nm);
+ ensure_equals(metadata["desc"].asString(), descs[nm]);
+ ensure("should not have required",
+ (metadata["required"].isUndefined() || metadata["required"].size() == 0));
+ ensure("should not have optional", metadata["optional"].isUndefined());
+ }
+ }
+
+ template<> template<>
+ void object::test<11>()
+ {
+ set_test_name("query map-style arbitrary-params functions/methods: "
+ "full array defaults vs. full map defaults");
+ // With functions registered with no defaults ("_allreq" suffixes),
+ // there is of course no difference between array defaults and map
+ // defaults. (We don't even bother registering with LLSD::emptyArray()
+ // vs. LLSD::emptyMap().) With functions registered with all defaults,
+ // there should (!) be no difference beween array defaults and map
+ // defaults. Verify, so we can ignore the distinction for all other
+ // tests.
+ LLSD equivalences(LLSDArray
+ (LLSDArray("freena_map_adft")("freena_map_mdft"))
+ (LLSDArray("freenb_map_adft")("freenb_map_mdft"))
+ (LLSDArray("smethodna_map_adft")("smethodna_map_mdft"))
+ (LLSDArray("smethodnb_map_adft")("smethodnb_map_mdft"))
+ (LLSDArray("methodna_map_adft")("methodna_map_mdft"))
+ (LLSDArray("methodnb_map_adft")("methodnb_map_mdft")));
+ foreach(LLSD eq, inArray(equivalences))
+ {
+ LLSD adft(eq[0]);
+ LLSD mdft(eq[1]);
+ // We can't just compare the results of the two getMetadata()
+ // calls, because they contain ["name"], which are different. So
+ // capture them, verify that each ["name"] is as expected, then
+ // remove for comparing the rest.
+ LLSD ameta(getMetadata(adft));
+ LLSD mmeta(getMetadata(mdft));
+ ensure_equals("adft name", adft, ameta["name"]);
+ ensure_equals("mdft name", mdft, mmeta["name"]);
+ ameta.erase("name");
+ mmeta.erase("name");
+ ensure_equals(STRINGIZE("metadata for " << adft.asString()
+ << " vs. " << mdft.asString()),
+ ameta, mmeta);
+ }
+ }
+
+ template<> template<>
+ void object::test<12>()
+ {
+ set_test_name("query map-style arbitrary-params functions/methods");
+ // - (Free function | non-static method), map style, arbitrary params,
+ // (empty | full | partial (array | map)) defaults
+
+ // Generate maps containing all parameter names for cases in which all
+ // params are required. Also maps containing left requirements for
+ // partial defaults arrays. Also defaults maps from defaults arrays.
+ LLSD allreq, leftreq, rightdft;
+ foreach(LLSD::String a, ab)
+ {
+ // The map in which all params are required uses params[a] as
+ // keys, with all isUndefined() as values. We can accomplish that
+ // by passing zipmap() an empty values array.
+ allreq[a] = zipmap(params[a], LLSD::emptyArray());
+ // Same for leftreq, save that we use the subset of the params not
+ // supplied by dft_array_partial[a].
+ LLSD::Integer partition(params[a].size() - dft_array_partial[a].size());
+ leftreq[a] = zipmap(llsd_copy_array(params[a].beginArray(),
+ params[a].beginArray() + partition),
+ LLSD::emptyArray());
+ // Generate map pairing dft_array_partial[a] values with their
+ // param names.
+ rightdft[a] = zipmap(llsd_copy_array(params[a].beginArray() + partition,
+ params[a].endArray()),
+ dft_array_partial[a]);
+ }
+ cout << "allreq:\n" << allreq << "\nleftreq:\n" << leftreq << "\nrightdft:\n" << rightdft << std::endl;
+
+ // Generate maps containing parameter names not provided by the
+ // dft_map_partial maps.
+ LLSD skipreq(allreq);
+ foreach(LLSD::String a, ab)
+ {
+ foreach(const MapEntry& me, inMap(dft_map_partial[a]))
+ {
+ skipreq[a].erase(me.first);
+ }
+ }
+ cout << "skipreq:\n" << skipreq << std::endl;
+
+ LLSD groups(LLSDArray // array of groups
+
+ (LLSDArray // group
+ (LLSDArray("freena_map_allreq")("smethodna_map_allreq")("methodna_map_allreq"))
+ (LLSDArray(allreq["a"])(LLSD()))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freenb_map_allreq")("smethodnb_map_allreq")("methodnb_map_allreq"))
+ (LLSDArray(allreq["b"])(LLSD()))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freena_map_leftreq")("smethodna_map_leftreq")("methodna_map_leftreq"))
+ (LLSDArray(leftreq["a"])(rightdft["a"]))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freenb_map_leftreq")("smethodnb_map_leftreq")("methodnb_map_leftreq"))
+ (LLSDArray(leftreq["b"])(rightdft["b"]))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freena_map_skipreq")("smethodna_map_skipreq")("methodna_map_skipreq"))
+ (LLSDArray(skipreq["a"])(dft_map_partial["a"]))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freenb_map_skipreq")("smethodnb_map_skipreq")("methodnb_map_skipreq"))
+ (LLSDArray(skipreq["b"])(dft_map_partial["b"]))) // required, optional
+
+ // We only need mention the full-map-defaults ("_mdft" suffix)
+ // registrations, having established their equivalence with the
+ // full-array-defaults ("_adft" suffix) registrations in another test.
+ (LLSDArray // group
+ (LLSDArray("freena_map_mdft")("smethodna_map_mdft")("methodna_map_mdft"))
+ (LLSDArray(LLSD::emptyMap())(dft_map_full["a"]))) // required, optional
+
+ (LLSDArray // group
+ (LLSDArray("freenb_map_mdft")("smethodnb_map_mdft")("methodnb_map_mdft"))
+ (LLSDArray(LLSD::emptyMap())(dft_map_full["b"])))); // required, optional
+
+ foreach(LLSD grp, inArray(groups))
+ {
+ // Internal structure of each group in 'groups':
+ LLSD names(grp[0]);
+ LLSD required(grp[1][0]);
+ LLSD optional(grp[1][1]);
+ cout << "For " << names << ",\n" << "required:\n" << required << "\noptional:\n" << optional << std::endl;
+
+ // Loop through 'names'
+ foreach(LLSD nm, inArray(names))
+ {
+ LLSD metadata(getMetadata(nm));
+ ensure_equals("name mismatch", metadata["name"], nm);
+ ensure_equals(nm.asString(), metadata["desc"].asString(), descs[nm]);
+ ensure_equals(STRINGIZE(nm << " required mismatch"),
+ metadata["required"], required);
+ ensure_equals(STRINGIZE(nm << " optional mismatch"),
+ metadata["optional"], optional);
+ }
+ }
+ }
+
+ template<> template<>
+ void object::test<13>()
+ {
+ set_test_name("try_call()");
+ ensure("try_call(bogus name, LLSD()) returned true", ! work.try_call("freek", LLSD()));
+ ensure("try_call(bogus name) returned true", ! work.try_call(LLSDMap("op", "freek")));
+ ensure("try_call(real name, LLSD()) returned false", work.try_call("free0_array", LLSD()));
+ ensure("try_call(real name) returned false", work.try_call(LLSDMap("op", "free0_map")));
+ }
+
+ template<> template<>
+ void object::test<14>()
+ {
+ set_test_name("call with bad name");
+ call_exc("freek", LLSD(), "not found");
+ // We don't have a comparable helper function for the one-arg
+ // operator() method, and it's not worth building one just for this
+ // case. Write it out.
+ std::string threw;
+ try
+ {
+ work(LLSDMap("op", "freek"));
+ }
+ catch (const std::runtime_error& e)
+ {
+ cout << "*** " << e.what() << "\n";
+ threw = e.what();
+ }
+ ensure_has(threw, "bad");
+ ensure_has(threw, "op");
+ ensure_has(threw, "freek");
+ }
+
+ template<> template<>
+ void object::test<15>()
+ {
+ set_test_name("call with event key");
+ // We don't need a separate test for operator()(string, LLSD) with
+ // valid name, because all the rest of the tests exercise that case.
+ // The one we don't exercise elsewhere is operator()(LLSD) with valid
+ // name, so here it is.
+ work(LLSDMap("op", "free0_map"));
+ ensure_equals(g.i, 17);
+ }
+
+ // Cannot be defined inside function body... remind me again why we use C++... :-P
+ struct CallablesTriple
+ {
+ std::string name, name_req;
+ LLSD& llsd;
+ };
+
+ template<> template<>
+ void object::test<16>()
+ {
+ set_test_name("call Callables");
+ CallablesTriple tests[] =
+ {
+ { "free1", "free1_req", g.llsd },
+ { "Dmethod1", "Dmethod1_req", work.llsd },
+ { "Dcmethod1", "Dcmethod1_req", work.llsd },
+ { "method1", "method1_req", v.llsd }
+ };
+ // Arbitrary LLSD value that we should be able to pass to Callables
+ // without 'required', but should not be able to pass to Callables
+ // with 'required'.
+ LLSD answer(42);
+ // LLSD value matching 'required' according to llsd_matches() rules.
+ LLSD matching(LLSDMap("d", 3.14)("array", LLSDArray("answer")(true)(answer)));
+ // Okay, walk through 'tests'.
+ foreach(const CallablesTriple& tr, tests)
+ {
+ // Should be able to pass 'answer' to Callables registered
+ // without 'required'.
+ work(tr.name, answer);
+ ensure_equals("answer mismatch", tr.llsd, answer);
+ // Should NOT be able to pass 'answer' to Callables registered
+ // with 'required'.
+ call_exc(tr.name_req, answer, "bad request");
+ // But SHOULD be able to pass 'matching' to Callables registered
+ // with 'required'.
+ work(tr.name_req, matching);
+ ensure_equals("matching mismatch", tr.llsd, matching);
+ }
+ }
+
+ template<> template<>
+ void object::test<17>()
+ {
+ set_test_name("passing wrong args to (map | array)-style registrations");
+
+ // Pass scalar/map to array-style functions, scalar/array to map-style
+ // functions. As that validation happens well before we engage the
+ // argument magic, it seems pointless to repeat this with every
+ // variation: (free function | non-static method), (no | arbitrary)
+ // args. We should only need to engage it for one map-style
+ // registration and one array-style registration.
+ std::string array_exc("needs an args array");
+ call_exc("free0_array", 17, array_exc);
+ call_exc("free0_array", LLSDMap("pi", 3.14), array_exc);
+
+ std::string map_exc("needs a map");
+ call_exc("free0_map", 17, map_exc);
+ // Passing an array to a map-style function works now! No longer an
+ // error case!
+// call_exc("free0_map", LLSDArray("a")("b"), map_exc);
+ }
+
+ template<> template<>
+ void object::test<18>()
+ {
+ set_test_name("call no-args functions");
+ LLSD names(LLSDArray
+ ("free0_array")("free0_map")
+ ("smethod0_array")("smethod0_map")
+ ("method0_array")("method0_map"));
+ foreach(LLSD name, inArray(names))
+ {
+ // Look up the Vars instance for this function.
+ Vars* vars(varsfor(name));
+ // Both the global and stack Vars instances are automatically
+ // cleared at the start of each test<n> method. But since we're
+ // calling these things several different times in the same
+ // test<n> method, manually reset the Vars between each.
+ *vars = Vars();
+ ensure_equals(vars->i, 0);
+ // call function with empty array (or LLSD(), should be equivalent)
+ work(name, LLSD());
+ ensure_equals(vars->i, 17);
+ }
+ }
+
+ // Break out this data because we use it in a couple different tests.
+ LLSD array_funcs(LLSDArray
+ (LLSDMap("a", "freena_array") ("b", "freenb_array"))
+ (LLSDMap("a", "smethodna_array")("b", "smethodnb_array"))
+ (LLSDMap("a", "methodna_array") ("b", "methodnb_array")));
+
+ template<> template<>
+ void object::test<19>()
+ {
+ set_test_name("call array-style functions with too-short arrays");
+ // Could have two different too-short arrays, one for *na and one for
+ // *nb, but since they both take 5 params...
+ LLSD tooshort(LLSDArray("this")("array")("too")("short"));
+ foreach(const LLSD& funcsab, inArray(array_funcs))
+ {
+ foreach(const llsd::MapEntry& e, inMap(funcsab))
+ {
+ call_exc(e.second, tooshort, "requires more arguments");
+ }
+ }
+ }
+
+ template<> template<>
+ void object::test<20>()
+ {
+ set_test_name("call array-style functions with (just right | too long) arrays");
+ std::vector<U8> binary;
+ for (size_t h(0x01), i(0); i < 5; h+= 0x22, ++i)
+ {
+ binary.push_back(h);
+ }
+ LLSD args(LLSDMap("a", LLSDArray(true)(17)(3.14)(123.456)("char*"))
+ ("b", LLSDArray("string")
+ (LLUUID("01234567-89ab-cdef-0123-456789abcdef"))
+ (LLDate("2011-02-03T15:07:00Z"))
+ (LLURI("http://secondlife.com"))
+ (binary)));
+ LLSD argsplus(args);
+ argsplus["a"].append("bogus");
+ argsplus["b"].append("bogus");
+ LLSD expect;
+ foreach(LLSD::String a, ab)
+ {
+ expect[a] = zipmap(params[a], args[a]);
+ }
+ // Adjust expect["a"]["cp"] for special Vars::cp treatment.
+ expect["a"]["cp"] = std::string("'") + expect["a"]["cp"].asString() + "'";
+ cout << "expect: " << expect << '\n';
+
+ // Use substantially the same logic for args and argsplus
+ LLSD argsarrays(LLSDArray(args)(argsplus));
+ // So i==0 selects 'args', i==1 selects argsplus
+ for (LLSD::Integer i(0), iend(argsarrays.size()); i < iend; ++i)
+ {
+ foreach(const LLSD& funcsab, inArray(array_funcs))
+ {
+ foreach(LLSD::String a, ab)
+ {
+ // Reset the Vars instance before each call
+ Vars* vars(varsfor(funcsab[a]));
+ *vars = Vars();
+ work(funcsab[a], argsarrays[i][a]);
+ ensure_llsd(STRINGIZE(funcsab[a].asString() <<
+ ": expect[\"" << a << "\"] mismatch"),
+ vars->inspect(), expect[a], 7); // 7 bits ~= 2 decimal digits
+
+ // TODO: in the i==1 or argsplus case, intercept LL_WARNS
+ // output? Even without that, using argsplus verifies that
+ // passing too many args isn't fatal; it works -- but
+ // would be nice to notice the warning too.
+ }
+ }
+ }
+ }
+
+ template<> template<>
+ void object::test<21>()
+ {
+ set_test_name("verify that passing LLSD() to const char* sends NULL");
+
+ ensure_equals("Vars::cp init", v.cp, "");
+ work("methodna_map_mdft", LLSDMap("cp", LLSD()));
+ ensure_equals("passing LLSD()", v.cp, "NULL");
+ work("methodna_map_mdft", LLSDMap("cp", ""));
+ ensure_equals("passing \"\"", v.cp, "''");
+ work("methodna_map_mdft", LLSDMap("cp", "non-NULL"));
+ ensure_equals("passing \"non-NULL\"", v.cp, "'non-NULL'");
+ }
+
+ template<> template<>
+ void object::test<22>()
+ {
+ set_test_name("call map-style functions with (full | oversized) (arrays | maps)");
+ const char binary[] = "\x99\x88\x77\x66\x55";
+ LLSD array_full(LLSDMap
+ ("a", LLSDArray(false)(255)(98.6)(1024.5)("pointer"))
+ ("b", LLSDArray("object")(LLUUID::generateNewID())(LLDate::now())(LLURI("http://wiki.lindenlab.com/wiki"))(LLSD::Binary(boost::begin(binary), boost::end(binary)))));
+ LLSD array_overfull(array_full);
+ foreach(LLSD::String a, ab)
+ {
+ array_overfull[a].append("bogus");
+ }
+ cout << "array_full: " << array_full << "\narray_overfull: " << array_overfull << std::endl;
+ // We rather hope that LLDate::now() will generate a timestamp
+ // distinct from the one it generated in the constructor, moments ago.
+ ensure_not_equals("Timestamps too close",
+ array_full["b"][2].asDate(), dft_array_full["b"][2].asDate());
+ // We /insist/ that LLUUID::generateNewID() do so.
+ ensure_not_equals("UUID collision",
+ array_full["b"][1].asUUID(), dft_array_full["b"][1].asUUID());
+ LLSD map_full, map_overfull;
+ foreach(LLSD::String a, ab)
+ {
+ map_full[a] = zipmap(params[a], array_full[a]);
+ map_overfull[a] = map_full[a];
+ map_overfull[a]["extra"] = "ignore";
+ }
+ cout << "map_full: " << map_full << "\nmap_overfull: " << map_overfull << std::endl;
+ LLSD expect(map_full);
+ // Twiddle the const char* param.
+ expect["a"]["cp"] = std::string("'") + expect["a"]["cp"].asString() + "'";
+ // Another adjustment. For each data type, we're trying to distinguish
+ // three values: the Vars member's initial value (member wasn't
+ // stored; control never reached the set function), the registered
+ // default param value from dft_array_full, and the array_full value
+ // in this test. But bool can only distinguish two values. In this
+ // case, we want to differentiate the local array_full value from the
+ // dft_array_full value, so we use 'false'. However, that means
+ // Vars::inspect() doesn't differentiate it from the initial value,
+ // so won't bother returning it. Predict that behavior to match the
+ // LLSD values.
+ expect["a"].erase("b");
+ cout << "expect: " << expect << std::endl;
+ // For this test, calling functions registered with different sets of
+ // parameter defaults should make NO DIFFERENCE WHATSOEVER. Every call
+ // should pass all params.
+ LLSD names(LLSDMap
+ ("a", LLSDArray
+ ("freena_map_allreq") ("smethodna_map_allreq") ("methodna_map_allreq")
+ ("freena_map_leftreq")("smethodna_map_leftreq")("methodna_map_leftreq")
+ ("freena_map_skipreq")("smethodna_map_skipreq")("methodna_map_skipreq")
+ ("freena_map_adft") ("smethodna_map_adft") ("methodna_map_adft")
+ ("freena_map_mdft") ("smethodna_map_mdft") ("methodna_map_mdft"))
+ ("b", LLSDArray
+ ("freenb_map_allreq") ("smethodnb_map_allreq") ("methodnb_map_allreq")
+ ("freenb_map_leftreq")("smethodnb_map_leftreq")("methodnb_map_leftreq")
+ ("freenb_map_skipreq")("smethodnb_map_skipreq")("methodnb_map_skipreq")
+ ("freenb_map_adft") ("smethodnb_map_adft") ("methodnb_map_adft")
+ ("freenb_map_mdft") ("smethodnb_map_mdft") ("methodnb_map_mdft")));
+ // Treat (full | overfull) (array | map) the same.
+ LLSD argssets(LLSDArray(array_full)(array_overfull)(map_full)(map_overfull));
+ foreach(const LLSD& args, inArray(argssets))
+ {
+ foreach(LLSD::String a, ab)
+ {
+ foreach(LLSD::String name, inArray(names[a]))
+ {
+ // Reset the Vars instance
+ Vars* vars(varsfor(name));
+ *vars = Vars();
+ work(name, args[a]);
+ ensure_llsd(STRINGIZE(name << ": expect[\"" << a << "\"] mismatch"),
+ vars->inspect(), expect[a], 7); // 7 bits, 2 decimal digits
+ // intercept LL_WARNS for the two overfull cases?
+ }
+ }
+ }
+ }
+} // namespace tut