Support for dynamic variants (fix #9)
This commit is contained in:
WebFreak001
parent
408cda19bc
commit
73122deb8c
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@ -67,8 +67,9 @@ import ddbus;
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MessageRouter router = new MessageRouter();
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// create a pattern to register a handler at a path, interface and method
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MessagePattern patt = MessagePattern("/root","ca.thume.test","test");
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router.setHandler!(int,int)(patt,(int par) {
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writeln("Called with ", par);
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router.setHandler!(int,int,Variant!DBusAny)(patt,(int par, Variant!DBusAny anyArgument) {
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// anyArgument can contain any type now, it must be specified as argument using Variant!DBusAny.
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writeln("Called with ", par, ", ", anyArgument);
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return par;
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});
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// handle a signal
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@ -2,6 +2,7 @@ module ddbus.conv;
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import ddbus.c_lib;
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import ddbus.util;
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import ddbus.thin;
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import std.string;
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import std.typecons;
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import std.range;
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@ -37,6 +38,48 @@ void buildIter(TS...)(DBusMessageIter *iter, TS args) if(allCanDBus!TS) {
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dbus_message_iter_open_container(iter, 'v', subSig, &sub);
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buildIter(&sub, arg.data);
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dbus_message_iter_close_container(iter, &sub);
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} else static if(is(T == DBusAny)) {
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DBusMessageIter subStore;
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DBusMessageIter* sub = &subStore;
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char[] sig = [cast(char) arg.type];
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if(arg.type == 'a')
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sig ~= arg.signature;
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else if(arg.type == 'r')
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sig = arg.signature;
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sig ~= '\0';
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if (!arg.explicitVariant)
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sub = iter;
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else
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dbus_message_iter_open_container(iter, 'v', sig.ptr, sub);
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if(arg.type == 's') {
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immutable(char)* cStr = arg.str.toStringz();
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dbus_message_iter_append_basic(sub,'s',&cStr);
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} else if(arg.type == 'b') {
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dbus_bool_t longerBool = arg.boolean; // dbus bools are ints
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dbus_message_iter_append_basic(sub,'b',&longerBool);
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} else if(dbus_type_is_basic(arg.type)) {
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dbus_message_iter_append_basic(sub,arg.type,&arg.int64);
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} else if(arg.type == 'a') {
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DBusMessageIter arr;
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dbus_message_iter_open_container(sub, 'a', sig[1 .. $].ptr, &arr);
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foreach(item; arg.array)
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buildIter(&arr, item);
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dbus_message_iter_close_container(sub, &arr);
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} else if(arg.type == 'r') {
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DBusMessageIter arr;
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dbus_message_iter_open_container(sub, 'r', null, &arr);
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foreach(item; arg.tuple)
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buildIter(&arr, item);
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dbus_message_iter_close_container(sub, &arr);
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} else if(arg.type == 'e') {
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DBusMessageIter entry;
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dbus_message_iter_open_container(sub, 'e', null, &entry);
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buildIter(&entry, arg.entry.key);
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buildIter(&entry, arg.entry.value);
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dbus_message_iter_close_container(sub, &entry);
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}
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if(arg.explicitVariant)
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dbus_message_iter_close_container(iter, sub);
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} else static if(is(T == DictionaryEntry!(K, V), K, V)) {
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DBusMessageIter sub;
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dbus_message_iter_open_container(iter, 'e', null, &sub);
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@ -56,6 +99,8 @@ T readIter(T)(DBusMessageIter *iter) if (canDBus!T) {
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DBusMessageIter sub;
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dbus_message_iter_recurse(iter, &sub);
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ret = readIter!T(&sub);
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static if(is(T == DBusAny))
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ret.explicitVariant = true;
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dbus_message_iter_next(iter);
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return ret;
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}
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@ -64,7 +109,7 @@ T readIter(T)(DBusMessageIter *iter) if (canDBus!T) {
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assert(dbus_message_iter_get_arg_type(iter) == 'r');
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} else static if(is(T == DictionaryEntry!(K1, V1), K1, V1)) {
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assert(dbus_message_iter_get_arg_type(iter) == 'e');
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} else {
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} else static if(!is(T == DBusAny)) {
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assert(dbus_message_iter_get_arg_type(iter) == typeCode!T());
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}
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static if(is(T==string)) {
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@ -102,6 +147,44 @@ T readIter(T)(DBusMessageIter *iter) if (canDBus!T) {
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auto entry = readIter!(DictionaryEntry!(KeyType!T, ValueType!T))(&sub);
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ret[entry.key] = entry.value;
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}
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} else static if(is(T == DBusAny)) {
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ret.type = dbus_message_iter_get_arg_type(iter);
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ret.explicitVariant = false;
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if(ret.type == 's') {
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const(char)* cStr;
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dbus_message_iter_get_basic(iter, &cStr);
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ret.str = cStr.fromStringz().idup; // copy string
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} else if(ret.type == 'b') {
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dbus_bool_t longerBool;
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dbus_message_iter_get_basic(iter, &longerBool);
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ret.boolean = cast(bool)longerBool;
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} else if(dbus_type_is_basic(ret.type)) {
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dbus_message_iter_get_basic(iter, &ret.int64);
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} else if(ret.type == 'a') {
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DBusMessageIter sub;
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dbus_message_iter_recurse(iter, &sub);
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auto sig = dbus_message_iter_get_signature(&sub);
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ret.signature = sig.fromStringz.dup;
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dbus_free(sig);
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while(dbus_message_iter_get_arg_type(&sub) != 0) {
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ret.array ~= readIter!DBusAny(&sub);
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}
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} else if(ret.type == 'r') {
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auto sig = dbus_message_iter_get_signature(iter);
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ret.signature = sig.fromStringz.dup;
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dbus_free(sig);
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DBusMessageIter sub;
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dbus_message_iter_recurse(iter, &sub);
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while(dbus_message_iter_get_arg_type(&sub) != 0) {
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ret.tuple ~= readIter!DBusAny(&sub);
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}
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} else if(ret.type == 'e') {
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DBusMessageIter sub;
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dbus_message_iter_recurse(iter, &sub);
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ret.entry = new DictionaryEntry!(DBusAny, DBusAny);
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ret.entry.key = readIter!DBusAny(&sub);
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ret.entry.value = readIter!DBusAny(&sub);
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}
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} else static if(basicDBus!T) {
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dbus_message_iter_get_basic(iter, &ret);
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}
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@ -123,9 +206,22 @@ unittest {
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bool[] emptyB;
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string[string] map;
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map["hello"] = "world";
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auto args = tuple(5,true,"wow",var(5.9),[6,5],tuple(6.2,4,[["lol"]],emptyB,var([4,2])),map);
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DBusAny anyVar = DBusAny(cast(ulong) 1561);
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anyVar.type.assertEqual('t');
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anyVar.uint64.assertEqual(1561);
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anyVar.explicitVariant.assertEqual(false);
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auto tupleMember = DBusAny(tuple(Variant!int(45), Variant!ushort(5), 32, [1, 2], tuple(variant(4), 5), map));
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DBusAny complexVar = DBusAny(variant([
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"hello world": variant(DBusAny(1337)),
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"array value": variant(DBusAny([42, 64])),
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"tuple value": variant(tupleMember)
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]));
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complexVar.type.assertEqual('a');
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complexVar.signature.assertEqual("{sv}".dup);
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tupleMember.signature.assertEqual("(vviai(vi)a{ss})");
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auto args = tuple(5,true,"wow",var(5.9),[6,5],tuple(6.2,4,[["lol"]],emptyB,var([4,2])),map,anyVar,complexVar);
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msg.build(args.expand);
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msg.signature().assertEqual("ibsvai(diaasabv)a{ss}");
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msg.signature().assertEqual("ibsvai(diaasabv)a{ss}tv");
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msg.readTuple!(typeof(args))().assertEqual(args);
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DBusMessageIter iter;
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dbus_message_iter_init(msg.msg, &iter);
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@ -136,4 +232,6 @@ unittest {
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readIter!(int[])(&iter).assertEqual([6,5]);
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readIter!(Tuple!(double,int,string[][],bool[],Variant!(int[])))(&iter).assertEqual(tuple(6.2,4,[["lol"]],emptyB,var([4,2])));
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readIter!(string[string])(&iter).assertEqual(["hello": "world"]);
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readIter!DBusAny(&iter).assertEqual(anyVar);
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readIter!DBusAny(&iter).assertEqual(complexVar);
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}
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@ -203,16 +203,21 @@ unittest{
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patt = MessagePattern("/root/wat","ca.thume.tester","lolwut");
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router.setHandler!(int,int)(patt,(int p) {return 6;});
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patt = MessagePattern("/root/foo","ca.thume.tester","lolwut");
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router.setHandler!(Tuple!(string,string,int),int)(patt,(int p) {Tuple!(string,string,int) ret; ret[0] = "a"; ret[1] = "b"; ret[2] = p; return ret;});
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router.setHandler!(Tuple!(string,string,int),int,Variant!DBusAny)(patt,(int p, Variant!DBusAny any) {Tuple!(string,string,int) ret; ret[0] = "a"; ret[1] = "b"; ret[2] = p; return ret;});
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patt = MessagePattern("/troll","ca.thume.tester","wow");
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router.setHandler!(void)(patt,{return;});
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static assert(!__traits(compiles, {
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patt = MessagePattern("/root/bar","ca.thume.tester","lolwut");
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router.setHandler!(void, DBusAny)(patt,(DBusAny wrongUsage){return;});
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}));
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// TODO: these tests rely on nondeterministic hash map ordering
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static string introspectResult = `<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
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<node name="/root"><interface name="ca.thume.test"><method name="test"><arg type="i" direction="in"/><arg type="i" direction="out"/></method></interface><interface name="ca.thume.tester"><method name="lolwut"><arg type="i" direction="in"/><arg type="s" direction="in"/></method></interface><node name="foo"/><node name="wat"/></node>`;
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router.introspectXML("/root").assertEqual(introspectResult);
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static string introspectResult2 = `<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
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<node name="/root/foo"><interface name="ca.thume.tester"><method name="lolwut"><arg type="i" direction="in"/><arg type="s" direction="out"/><arg type="s" direction="out"/><arg type="i" direction="out"/></method></interface></node>`;
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<node name="/root/foo"><interface name="ca.thume.tester"><method name="lolwut"><arg type="i" direction="in"/><arg type="v" direction="in"/><arg type="s" direction="out"/><arg type="s" direction="out"/><arg type="i" direction="out"/></method></interface></node>`;
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router.introspectXML("/root/foo").assertEqual(introspectResult2);
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router.introspectXML("/").assertEndsWith(`<node name="/"><node name="root"/><node name="troll"/></node>`);
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}
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@ -74,7 +74,7 @@ void registerMethods(T : Object)(MessageRouter router, string path, string iface
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unittest {
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import dunit.toolkit;
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class Tester {
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int lol(int x, string s, string[string] map) {return 5;}
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int lol(int x, string s, string[string] map, Variant!DBusAny any) {return 5;}
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void wat() {}
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@SignalMethod
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void signalRecv() {}
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@ -91,6 +91,6 @@ unittest {
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patt.signal = false;
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router.callTable.assertHasKey(patt);
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auto res = router.callTable[patt];
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res.argSig.assertEqual(["i","s", "a{ss}"]);
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res.argSig.assertEqual(["i","s","a{ss}","v"]);
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res.retSig.assertEqual(["i"]);
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}
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@ -7,6 +7,10 @@ import ddbus.util;
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import std.string;
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import std.typecons;
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import std.exception;
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import std.traits;
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import std.conv;
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import std.range;
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import std.algorithm;
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class DBusException : Exception {
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this(DBusError *err) {
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@ -26,7 +30,265 @@ T wrapErrors(T)(T delegate(DBusError *err) del) {
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return ret;
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}
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/// Structure allowing typeless parameters
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struct DBusAny {
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/// DBus type of the value (never 'v'), see typeSig!T
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int type;
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/// Child signature for Arrays & Tuples
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char[] signature;
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/// If true, this value will get serialized as variant value, otherwise it is serialized like it wasn't in a DBusAny wrapper.
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/// Same functionality as Variant!T but with dynamic types if true.
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bool explicitVariant;
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union
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{
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///
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byte int8;
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///
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short int16;
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///
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ushort uint16;
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///
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int int32;
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///
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uint uint32;
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///
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long int64;
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///
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ulong uint64;
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///
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double float64;
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///
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string str;
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///
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bool boolean;
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///
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DBusAny[] array;
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///
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DBusAny[] tuple;
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///
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DictionaryEntry!(DBusAny, DBusAny)* entry;
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}
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/// Manually creates a DBusAny object using a type, signature and implicit specifier.
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this(int type, char[] signature, bool explicit) {
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this.type = type;
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this.signature = signature;
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this.explicitVariant = explicit;
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}
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/// Automatically creates a DBusAny object with fitting parameters from a D type or Variant!T.
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/// Pass a `Variant!T` to make this an explicit variant.
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this(T)(T value) {
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static if(is(T == byte) || is(T == ubyte)) {
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this(typeCode!byte, null, false);
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int8 = cast(byte) value;
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} else static if(is(T == short)) {
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this(typeCode!short, null, false);
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int16 = cast(short) value;
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} else static if(is(T == ushort)) {
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this(typeCode!ushort, null, false);
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uint16 = cast(ushort) value;
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} else static if(is(T == int)) {
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this(typeCode!int, null, false);
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int32 = cast(int) value;
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} else static if(is(T == uint)) {
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this(typeCode!uint, null, false);
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uint32 = cast(uint) value;
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} else static if(is(T == long)) {
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this(typeCode!long, null, false);
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int64 = cast(long) value;
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} else static if(is(T == ulong)) {
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this(typeCode!ulong, null, false);
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uint64 = cast(ulong) value;
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} else static if(is(T == double)) {
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this(typeCode!double, null, false);
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float64 = cast(double) value;
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} else static if(isSomeString!T) {
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this(typeCode!string, null, false);
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str = value.to!string;
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} else static if(is(T == bool)) {
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this(typeCode!bool, null, false);
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boolean = cast(bool) value;
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} else static if(is(T == Variant!R, R)) {
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static if(is(R == DBusAny)) {
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type = value.data.type;
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signature = value.data.signature;
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explicitVariant = true;
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if(type == 'a' || type == 'r')
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array = value.data.array;
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if(type == 's')
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str = value.data.str;
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else if(type == 'e')
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entry = value.data.entry;
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else
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uint64 = value.data.uint64;
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} else {
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this(value.data);
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explicitVariant = true;
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}
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} else static if(is(T : DictionaryEntry!(K, V), K, V)) {
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this('e', null, false);
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entry = new DictionaryEntry!(DBusAny, DBusAny)();
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static if(is(K == DBusAny))
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entry.key = value.key;
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else
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entry.key = DBusAny(value.key);
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static if(is(V == DBusAny))
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entry.value = value.value;
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else
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entry.value = DBusAny(value.value);
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} else static if(isInputRange!T) {
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this.type = 'a';
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this.signature = typeSig!(ElementType!T).dup;
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this.explicitVariant = false;
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foreach(elem; value)
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array ~= DBusAny(elem);
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} else static if(isTuple!T) {
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this.type = 'r';
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this.signature = ['('];
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this.explicitVariant = false;
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foreach(index, R; value.Types) {
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auto var = DBusAny(value[index]);
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tuple ~= var;
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if(var.explicitVariant)
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this.signature ~= 'v';
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else {
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if (var.type != 'r')
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this.signature ~= cast(char) var.type;
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if(var.type == 'a' || var.type == 'r')
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this.signature ~= var.signature;
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}
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}
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this.signature ~= ')';
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} else static if(isAssociativeArray!T) {
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this(value.byDictionaryEntries);
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} else static assert(false, T.stringof ~ " not convertible to a Variant");
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}
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///
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string toString() const {
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string valueStr;
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switch(type) {
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case typeCode!byte:
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valueStr = int8.to!string;
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break;
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case typeCode!short:
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valueStr = int16.to!string;
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break;
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case typeCode!ushort:
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valueStr = uint16.to!string;
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break;
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case typeCode!int:
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valueStr = int32.to!string;
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break;
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case typeCode!uint:
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valueStr = uint32.to!string;
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break;
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case typeCode!long:
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valueStr = int64.to!string;
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break;
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case typeCode!ulong:
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valueStr = uint64.to!string;
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break;
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case typeCode!double:
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valueStr = float64.to!string;
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break;
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case typeCode!string:
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valueStr = '"' ~ str ~ '"';
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break;
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case typeCode!bool:
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valueStr = boolean ? "true" : "false";
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break;
|
||||
case 'a':
|
||||
valueStr = '[' ~ array.map!(a => a.toString).join(", ") ~ ']';
|
||||
break;
|
||||
case 'r':
|
||||
valueStr = '(' ~ array.map!(a => a.toString).join(", ") ~ ')';
|
||||
break;
|
||||
case 'e':
|
||||
valueStr = entry.key.toString ~ ": " ~ entry.value.toString;
|
||||
break;
|
||||
default:
|
||||
valueStr = "unknown";
|
||||
break;
|
||||
}
|
||||
return "DBusAny(" ~ cast(char) type
|
||||
~ ", \"" ~ signature.idup
|
||||
~ "\", " ~ (explicitVariant ? "explicit" : "implicit")
|
||||
~ ", " ~ valueStr ~ ")";
|
||||
}
|
||||
|
||||
/// If the value is an array of DictionaryEntries this will return a HashMap
|
||||
DBusAny[DBusAny] toAA() {
|
||||
enforce(type == 'a' && signature && signature[0] == '{');
|
||||
DBusAny[DBusAny] aa;
|
||||
foreach(val; array) {
|
||||
enforce(val.type == 'e');
|
||||
aa[val.entry.key] = val.entry.value;
|
||||
}
|
||||
return aa;
|
||||
}
|
||||
|
||||
/// Converts a basic type or an array to the D type with type checking. Tuples can get converted to an array.
|
||||
T to(T)() {
|
||||
static if(isIntegral!T || isFloatingPoint!T) {
|
||||
switch(type) {
|
||||
case typeCode!byte:
|
||||
return cast(T) int8;
|
||||
case typeCode!short:
|
||||
return cast(T) int16;
|
||||
case typeCode!ushort:
|
||||
return cast(T) uint16;
|
||||
case typeCode!int:
|
||||
return cast(T) int32;
|
||||
case typeCode!uint:
|
||||
return cast(T) uint32;
|
||||
case typeCode!long:
|
||||
return cast(T) int64;
|
||||
case typeCode!ulong:
|
||||
return cast(T) uint64;
|
||||
case typeCode!double:
|
||||
return cast(T) float64;
|
||||
default:
|
||||
throw new Exception("Can't convert type " ~ cast(char) type ~ " to " ~ T.stringof);
|
||||
}
|
||||
} else static if(isSomeString!T) {
|
||||
if(type == 's')
|
||||
return str.to!T;
|
||||
else
|
||||
throw new Exception("Can't convert type " ~ cast(char) type ~ " to " ~ T.stringof);
|
||||
} else static if(isDynamicArray!T) {
|
||||
if(type != 'a' && type != 'r')
|
||||
throw new Exception("Can't convert type " ~ cast(char) type ~ " to an array");
|
||||
T ret;
|
||||
foreach(elem; array)
|
||||
ret ~= elem.to!(ElementType!T);
|
||||
return ret;
|
||||
} else static assert(false, "Can't convert variant to " ~ T.stringof);
|
||||
}
|
||||
|
||||
bool opEquals(ref in DBusAny b) const {
|
||||
if(b.type != type || b.explicitVariant != explicitVariant)
|
||||
return false;
|
||||
if((type == 'a' || type == 'r') && b.signature != signature)
|
||||
return false;
|
||||
if(type == 'a')
|
||||
return array == b.array;
|
||||
else if(type == 'r')
|
||||
return tuple == b.tuple;
|
||||
else if(type == 's')
|
||||
return str == b.str;
|
||||
else if(type == 'e')
|
||||
return entry == b.entry || (entry && b.entry && *entry == *b.entry);
|
||||
else
|
||||
return uint64 == b.uint64;
|
||||
}
|
||||
}
|
||||
|
||||
/// Marks the data as variant on serialization
|
||||
struct Variant(T) {
|
||||
///
|
||||
T data;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -52,7 +52,7 @@ template basicDBus(T) {
|
|||
}
|
||||
|
||||
template canDBus(T) {
|
||||
static if(basicDBus!T) {
|
||||
static if(basicDBus!T || is(T == DBusAny)) {
|
||||
enum canDBus = true;
|
||||
} else static if(isVariant!T) {
|
||||
enum canDBus = canDBus!(VariantType!T);
|
||||
|
|
@ -101,6 +101,8 @@ string typeSig(T)() if(canDBus!T) {
|
|||
return "s";
|
||||
} else static if(isVariant!T) {
|
||||
return "v";
|
||||
} else static if(is(T == DBusAny)) {
|
||||
static assert(false, "Cannot determine type signature of DBusAny. Change to Variant!DBusAny if a variant was desired.");
|
||||
} else static if(isTuple!T) {
|
||||
string sig = "(";
|
||||
foreach(i, S; T.Types) {
|
||||
|
|
|
|||
Loading…
Reference in a new issue