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Update

This commit is contained in:
Tony Garnock-Jones 2016-07-11 12:06:07 -04:00
parent 53b243ad8a
commit 4ea5b79f3f
9 changed files with 1553 additions and 483 deletions
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927
dist/syndicatecompiler.js vendored
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14
dist/syndicatecompiler.min.js vendored
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26
examples/location/index.expanded.js
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@ -65,26 +65,26 @@ var G = new Syndicate.Ground(function () {
(function () { var currentLocation = null; var selectedMarker = null;
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(brokerConnection(wsurl), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return (currentLocation) ? Syndicate.Patch.assert(toBroker(wsurl,currentLocation), 0) : Syndicate.Patch.emptyPatch; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#my_email','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#my_email','change',_), metalevel: 0 }; }), (function() {
.addAssertion((function() { var _ = Syndicate.__; return (currentLocation) ? Syndicate.Patch.assert(toBroker(wsurl, currentLocation), 0) : Syndicate.Patch.emptyPatch; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#my_email', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#my_email', 'change', _), metalevel: 0 }; }), (function() {
var v = email_element.value.trim();
if (currentLocation) currentLocation[1] = v;
localStorage.my_email = v;
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#group','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#group','change',_), metalevel: 0 }; }), (function() {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#group', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#group', 'change', _), metalevel: 0 }; }), (function() {
localStorage.group = group_element.value.trim();
wsurl = wsurl_base + group_element.value.trim();
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#findMarker','click',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#findMarker','click',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#findMarker', 'click', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#findMarker', 'click', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
Syndicate.Dataspace.send(findMarker(document.getElementById('markerList').value));
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#markerList','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#markerList','change',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('#markerList', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('#markerList', 'change', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
Syndicate.Dataspace.send(findMarker(document.getElementById('markerList').value));
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub((locationRecord(_,_,_,_,_)), 0); }), (function() { var _ = Syndicate.__; return { assertion: ((Syndicate._$("loc",locationRecord(_,_,_,_,_)))), metalevel: 0 }; }), (function(loc) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub((locationRecord(_, _, _, _, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: ((Syndicate._$("loc",locationRecord(_, _, _, _, _)))), metalevel: 0 }; }), (function(loc) {
currentLocation = loc;
}))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(fromBroker(wsurl,locationRecord(_,_,_,_,_)), 0); }), (function() { var _ = Syndicate.__; return { assertion: fromBroker(wsurl,locationRecord((Syndicate._$("id")),(Syndicate._$("email")),_,_,_)), metalevel: 0 }; }), (function(id, email) { var ui = new Syndicate.UI.Anchor(); var marker = new google.maps.Marker({
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(fromBroker(wsurl, locationRecord(_, _, _, _, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: fromBroker(wsurl, locationRecord((Syndicate._$("id")), (Syndicate._$("email")), _, _, _)), metalevel: 0 }; }), (function(id, email) { var ui = new Syndicate.UI.Anchor(); var marker = new google.maps.Marker({
map: map,
clickable: true,
icon: 'https://www.gravatar.com/avatar/' + md5(email.trim().toLowerCase()) + '?s=32&d=retro'
@ -105,19 +105,23 @@ Syndicate.Actor.createFacet()
});
}
}
var _cachedAssertion1467054033339_0 = (function() { var _ = Syndicate.__; return fromBroker(wsurl,locationRecord(id,email,_,_,_)); })();
var _cachedAssertion1468253137502_0 = (function() { var _ = Syndicate.__; return fromBroker(wsurl, locationRecord(id, email, _, _, _)); })();
Syndicate.Actor.createFacet()
.addInitBlock((function() {
marker.addListener('click', Syndicate.Dataspace.wrap(function () {
selectMarker();
}));
}))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(ui.html('#markerList',Mustache.render(document.getElementById('markerList-option').innerHTML,{id:id,email:email})), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(ui.html('#markerList',
Mustache.render(document.getElementById('markerList-option').innerHTML, {
id: id,
email: email
})), 0); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(findMarker(id), 0); }), (function() { var _ = Syndicate.__; return { assertion: findMarker(id), metalevel: 0 }; }), (function() {
selectMarker();
if (latestPosition) map.panTo(latestPosition);
}))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(fromBroker(wsurl,locationRecord(id,email,_,_,_)), 0); }), (function() { var _ = Syndicate.__; return { assertion: fromBroker(wsurl,locationRecord(id,email,(Syndicate._$("timestamp")),(Syndicate._$("lat")),(Syndicate._$("lng")))), metalevel: 0 }; }), (function(timestamp, lat, lng) {
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(fromBroker(wsurl, locationRecord(id, email, _, _, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: fromBroker(wsurl, locationRecord(id, email, (Syndicate._$("timestamp")), (Syndicate._$("lat")), (Syndicate._$("lng")))), metalevel: 0 }; }), (function(timestamp, lat, lng) {
latestTimestamp = new Date(timestamp);
latestPosition = {lat: lat, lng: lng};
marker.setPosition(latestPosition);
@ -128,6 +132,6 @@ Syndicate.Actor.createFacet()
marker.setMap(null);
if (selectedMarker === marker) selectedMarker = null;
}))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054033339_0, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054033339_0, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253137502_0, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253137502_0, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
});
}).startStepping();

113
examples/todo/index.expanded.js
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@ -27,10 +27,10 @@ function todoListItemModel(initialId, initialTitle, initialCompleted) {
(function () {
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(todo(this.id,this.title,this.completed), 0); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(setCompleted(this.id,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: setCompleted(this.id,(Syndicate._$("v"))), metalevel: 0 }; }), (function(v) { this.completed = v; }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(todo(this.id, this.title, this.completed), 0); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(setCompleted(this.id, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: setCompleted(this.id, (Syndicate._$("v"))), metalevel: 0 }; }), (function(v) { this.completed = v; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(setAllCompleted(_), 0); }), (function() { var _ = Syndicate.__; return { assertion: setAllCompleted((Syndicate._$("v"))), metalevel: 0 }; }), (function(v) { this.completed = v; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(setTitle(this.id,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: setTitle(this.id,(Syndicate._$("v"))), metalevel: 0 }; }), (function(v) { this.title = v; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(setTitle(this.id, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: setTitle(this.id, (Syndicate._$("v"))), metalevel: 0 }; }), (function(v) { this.title = v; }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(clearCompletedTodos(), 0); }), (function() { var _ = Syndicate.__; return { assertion: clearCompletedTodos(), metalevel: 0 }; }), (function() {
if (this.completed) Syndicate.Dataspace.send(deleteTodo(this.id));
}))
@ -53,38 +53,48 @@ function todoListItemView(id) {
this.editing = false;
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id,(Syndicate._$("title")),(Syndicate._$("completed"))), metalevel: 0 }; }), (function(title, completed) {
var _cachedAssertion1467054034537_0 = (function() { var _ = Syndicate.__; return todo(id,title,completed); })();
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id, (Syndicate._$("title")), (Syndicate._$("completed"))), metalevel: 0 }; }), (function(title, completed) {
var _cachedAssertion1468253138670_0 = (function() { var _ = Syndicate.__; return todo(id, title, completed); })();
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(show(completed), 0); }), (function() { var _ = Syndicate.__; return { assertion: show(completed), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_1 = (function() { var _ = Syndicate.__; return show(completed); })();
var _cachedAssertion1468253138670_1 = (function() { var _ = Syndicate.__; return show(completed); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(this.ui.html('.todo-list',Mustache.render(getTemplate(this.editing?'todo-list-item-edit-template':'todo-list-item-view-template'),{id:id,title:title,completed_class:completed?"completed":"",checked:completed?"checked":"",}),id), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_1, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_1, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_0, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_0, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('.toggle','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('.toggle','change',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(this.ui.html('.todo-list',
Mustache.render(getTemplate(this.editing
? 'todo-list-item-edit-template'
: 'todo-list-item-view-template'),
{
id: id,
title: title,
completed_class: completed ? "completed" : "",
checked: completed ? "checked" : "",
}),
id), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_1, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_1, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_0, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_0, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('.toggle', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('.toggle', 'change', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
Syndicate.Dataspace.send(setCompleted(id, e.target.checked));
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('.destroy','click',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('.destroy','click',_), metalevel: 0 }; }), (function() {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('.destroy', 'click', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('.destroy', 'click', _), metalevel: 0 }; }), (function() {
Syndicate.Dataspace.send(deleteTodo(id));
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('label','dblclick',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('label','dblclick',_), metalevel: 0 }; }), (function() {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('label', 'dblclick', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('label', 'dblclick', _), metalevel: 0 }; }), (function() {
this.editing = true;
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit','keyup',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit','keyup',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit', 'keyup', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit', 'keyup', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
if (e.keyCode === ESCAPE_KEY_CODE || e.keyCode === ENTER_KEY_CODE) {
this.editing = false;
}
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit','blur',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit','blur',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit', 'blur', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit', 'blur', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
this.editing = false;
}))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit','change',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(this.ui.event('input.edit', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: this.ui.event('input.edit', 'change', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
var newTitle = e.target.value.trim();
Syndicate.Dataspace.send((newTitle ? setTitle(id, newTitle) : deleteTodo(id)));
this.editing = false;
}))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id,_,_), metalevel: 0 }; }), (function() {})).completeBuild(); })();
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id, _, _), metalevel: 0 }; }), (function() {})).completeBuild(); })();
});
}
@ -96,7 +106,7 @@ var G = new Syndicate.Ground(function () {
Syndicate.Actor.spawnActor(new Object(), function() {
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('.new-todo','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('.new-todo','change',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('.new-todo', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('.new-todo', 'change', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
var newTitle = e.target.value.trim();
if (newTitle) Syndicate.Dataspace.send(createTodo(newTitle));
e.target.value = "";
@ -109,35 +119,35 @@ Syndicate.Actor.createFacet()
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(activeTodoCount(_), 0); }), (function() { var _ = Syndicate.__; return { assertion: activeTodoCount((Syndicate._$("count"))), metalevel: 0 }; }), (function(count) {
var _cachedAssertion1467054034537_2 = (function() { var _ = Syndicate.__; return activeTodoCount(count); })();
var _cachedAssertion1468253138670_2 = (function() { var _ = Syndicate.__; return activeTodoCount(count); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(this.ui.context('count').html('.todo-count strong',''+count), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return (count !== 1) ? Syndicate.Patch.assert(this.ui.context('plural').html('.todo-count span.s','s'), 0) : Syndicate.Patch.emptyPatch; }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_2, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_2, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(this.ui.context('count').html('.todo-count strong', '' + count), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return (count !== 1) ? Syndicate.Patch.assert(, 0) : Syndicate.Patch.emptyPatch; }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_2, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_2, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(totalTodoCount(0), 0); }), (function() { var _ = Syndicate.__; return { assertion: totalTodoCount(0), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_3 = (function() { var _ = Syndicate.__; return totalTodoCount(0); })();
var _cachedAssertion1468253138670_3 = (function() { var _ = Syndicate.__; return totalTodoCount(0); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('section.main','class','hidden'), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('footer.footer','class','hidden'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_3, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_3, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('section.main', 'class', 'hidden'), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('footer.footer', 'class', 'hidden'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_3, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_3, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(completedTodoCount(0), 0); }), (function() { var _ = Syndicate.__; return { assertion: completedTodoCount(0), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_4 = (function() { var _ = Syndicate.__; return completedTodoCount(0); })();
var _cachedAssertion1468253138670_4 = (function() { var _ = Syndicate.__; return completedTodoCount(0); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('button.clear-completed','class','hidden'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_4, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_4, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('button.clear-completed','click',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('button.clear-completed','click',_), metalevel: 0 }; }), (function() {
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('button.clear-completed', 'class', 'hidden'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_4, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_4, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('button.clear-completed', 'click', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('button.clear-completed', 'click', _), metalevel: 0 }; }), (function() {
Syndicate.Dataspace.send(clearCompletedTodos());
}))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(allCompleted(), 0); }), (function() { var _ = Syndicate.__; return { assertion: allCompleted(), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_5 = (function() { var _ = Syndicate.__; return allCompleted(); })();
var _cachedAssertion1468253138670_5 = (function() { var _ = Syndicate.__; return allCompleted(); })();
Syndicate.Actor.createFacet()
.addInitBlock((function() { Syndicate.Dataspace.send(Syndicate.UI.setProperty('.toggle-all', 'checked', true)); }))
.addDoneBlock((function() { Syndicate.Dataspace.send(Syndicate.UI.setProperty('.toggle-all', 'checked', false)); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_5, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_5, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('.toggle-all','change',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('.toggle-all','change',(Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_5, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_5, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.globalEvent('.toggle-all', 'change', _), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.globalEvent('.toggle-all', 'change', (Syndicate._$("e"))), metalevel: 0 }; }), (function(e) {
Syndicate.Dataspace.send(setAllCompleted(e.target.checked));
}))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")),_,_), metalevel: 0 }; }), (function(id) {
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")), _, _), metalevel: 0 }; }), (function(id) {
todoListItemView(id);
})).completeBuild(); })();
});
@ -147,11 +157,11 @@ Syndicate.Actor.createFacet()
var activeCount = 0;
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")),_,(Syndicate._$("completed"))), metalevel: 0 }; }), (function(id, completed) { if (completed) completedCount++; else activeCount++; }))
.onEvent(false, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")),_,(Syndicate._$("completed"))), metalevel: 0 }; }), (function(id, completed) { if (completed) completedCount--; else activeCount--; }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")), _, (Syndicate._$("completed"))), metalevel: 0 }; }), (function(id, completed) { if (completed) completedCount++; else activeCount++; }))
.onEvent(false, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")), _, (Syndicate._$("completed"))), metalevel: 0 }; }), (function(id, completed) { if (completed) completedCount--; else activeCount--; }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(activeTodoCount(activeCount), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(completedTodoCount(completedCount), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(totalTodoCount(activeCount+completedCount), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(totalTodoCount(activeCount + completedCount), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return (completedCount > 0 && activeCount === 0) ? Syndicate.Patch.assert(allCompleted(), 0) : Syndicate.Patch.emptyPatch; })).completeBuild(); })();
});
@ -159,26 +169,27 @@ Syndicate.Actor.createFacet()
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.locationHash(_), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.locationHash((Syndicate._$("hash"))), metalevel: 0 }; }), (function(hash) {
var _cachedAssertion1467054034537_6 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash(hash); })();
var _cachedAssertion1468253138670_6 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash(hash); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('ul.filters > li > a[href="#'+hash+'"]','class','selected'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_6, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_6, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(Syndicate.UI.uiAttribute('ul.filters > li > a[href="#'+hash+'"]',
'class', 'selected'), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_6, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_6, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.locationHash('/'), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.locationHash('/'), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_7 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/'); })();
var _cachedAssertion1468253138670_7 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/'); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(show(true), 0); }))
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(show(false), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_7, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_7, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_7, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_7, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.locationHash('/active'), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.locationHash('/active'), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_8 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/active'); })();
var _cachedAssertion1468253138670_8 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/active'); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(show(false), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_8, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_8, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_8, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_8, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.UI.locationHash('/completed'), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.UI.locationHash('/completed'), metalevel: 0 }; }), (function() {
var _cachedAssertion1467054034537_9 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/completed'); })();
var _cachedAssertion1468253138670_9 = (function() { var _ = Syndicate.__; return Syndicate.UI.locationHash('/completed'); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(show(true), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_9, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_9, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_9, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_9, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
});
Syndicate.Actor.spawnActor(new Object(), function() {
@ -206,21 +217,21 @@ Syndicate.Actor.createFacet()
.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(createTodo(_), 0); }), (function() { var _ = Syndicate.__; return { assertion: createTodo((Syndicate._$("title"))), metalevel: 0 }; }), (function(title) {
todoListItemModel(db.nextId++, title, false);
}))
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")),_,_), metalevel: 0 }; }), (function(id) {
var _cachedAssertion1467054034537_10 = (function() { var _ = Syndicate.__; return todo(id,_,_); })();
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(_, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo((Syndicate._$("id")), _, _), metalevel: 0 }; }), (function(id) {
var _cachedAssertion1468253138670_10 = (function() { var _ = Syndicate.__; return todo(id, _, _); })();
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id,_,_), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id,(Syndicate._$("title")),(Syndicate._$("completed"))), metalevel: 0 }; }), (function(title, completed) {
var _cachedAssertion1467054034537_11 = (function() { var _ = Syndicate.__; return todo(id,title,completed); })();
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(todo(id, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: todo(id, (Syndicate._$("title")), (Syndicate._$("completed"))), metalevel: 0 }; }), (function(title, completed) {
var _cachedAssertion1468253138670_11 = (function() { var _ = Syndicate.__; return todo(id, title, completed); })();
Syndicate.Actor.createFacet()
.addInitBlock((function() {
db.todos[id] = {id: id, title: title, completed: completed};
localStorage['todos-syndicate'] = JSON.stringify(db);
}))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_11, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_11, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_11, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_11, metalevel: 0 }; }), (function() {})).completeBuild(); }))
.addDoneBlock((function() {
delete db.todos[id];
localStorage['todos-syndicate'] = JSON.stringify(db);
}))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1467054034537_10, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1467054034537_10, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253138670_10, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253138670_10, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
});
}).startStepping();

2
examples/two-buyer-protocol/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
index.expanded.js
index.md

12
examples/two-buyer-protocol/Makefile Normal file
View File

@ -0,0 +1,12 @@
TARGETS=index.expanded.js index.md
all: $(TARGETS)
%.expanded.js: %.js
../../bin/syndicatec $< > $@ || (rm -f $@; false)
%.md: %.js
sed -E -e 's:^: :g' -e 's:^ /// ?::g' -e 's:^ $$::g' < $< > $@
clean:
rm -f $(TARGETS)

306
examples/two-buyer-protocol/index.expanded.js Normal file
View File

@ -0,0 +1,306 @@
"use strict";
var Syndicate = require('../../src/main.js');
/// -->
/// This is an extended two-buyer book-purchase protocol, based
/// loosely on an example given in:
///
/// > K. Honda, N. Yoshida, and M. Carbone, “Multiparty asynchronous
/// > session types,” POPL 2008.
/// # The Scenario
///
/// A book-seller responds to requests for book prices when asked. A
/// pair of prospective buyers run through a shopping list. For each
/// book, the first buyer offers to split the cost of the book with
/// the second. If the second has enough money left, it accepts;
/// otherwise, it rejects the offer, and the first buyer tries a
/// different split. If the second buyer agrees to a split, it then
/// negotiates the purchase of the book with the book-seller.
/// # The Protocol
/// ## Role: SELLER
///
/// - when interest in `bookQuote($title, _)` appears,
/// asserts `bookQuote(title, Maybe Float)`, `false` meaning not available,
/// and otherwise an asking-price.
/// - when interest in `order($title, $offer-price, _, _)` appears,
/// asserts `order(title, offer-price, false, false)` for "no sale", otherwise
/// `order(title, offer-price, PositiveInteger, String)`, an accepted sale.
/// ## Role: BUYER
///
/// - observes `bookQuote(title, $price)` to learn prices.
/// - observes `order(title, offer-price, $id, $delivery-date)` to make orders.
/// ## Role: SPLIT-PROPOSER
///
/// - observes `splitProposal(title, asking-price, contribution, $accepted)`
/// to make a split-proposal and learn whether it was accepted or not.
/// ## Role: SPLIT-DISPOSER
///
/// - when interest in `splitProposal($title, $asking-price, $contribution, _)`
/// appears, asserts `splitProposal(title, askingPrice, contribution, true)`
/// to indicate they are willing to go through with the deal, in which case
/// they then perform the role of BUYER for title/asking-price, or asserts
/// `splitProposal(title, asking-price, contribution, false)` to indicate they
/// are unwilling to go through with the deal.
/// # A Sample Run
///
/// Run the program with `../../bin/syndicatec index.js | node` from a
/// checkout of the Syndicate repository.
///
/// A learns that the price of Catch 22 is 2.22
/// A makes an offer to split the price of Catch 22 contributing 1.11
/// B is being asked to contribute 1.11 toward Catch 22 at price 2.22
/// B accepts the offer, leaving them with 3.8899999999999997 remaining funds
/// A learns that the split-proposal for Catch 22 was accepted
/// A learns that Encyclopaedia Brittannica is out-of-stock.
/// The order for Catch 22 has id 10001483, and will be delivered on March 9th
/// A learns that the price of Candide is 34.95
/// A makes an offer to split the price of Candide contributing 17.475
/// B is being asked to contribute 17.475 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 26.212500000000002
/// B is being asked to contribute 8.7375 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 30.581250000000004
/// B is being asked to contribute 4.368749999999999 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 32.765625
/// B is being asked to contribute 2.184375000000003 toward Candide at price 34.95
/// B accepts the offer, leaving them with 1.7056249999999968 remaining funds
/// A learns that the split-proposal for Candide was accepted
/// A learns that the price of The Wind in the Willows is 3.95
/// A makes an offer to split the price of The Wind in the Willows contributing 1.975
/// The order for Candide has id 10001484, and will be delivered on March 9th
/// B is being asked to contribute 1.975 toward The Wind in the Willows at price 3.95
/// B hasn't enough funds (1.7056249999999968 remaining)
/// A learns that the split-proposal for The Wind in the Willows was rejected
/// A makes an offer to split the price of The Wind in the Willows contributing 2.9625000000000004
/// B is being asked to contribute 0.9874999999999998 toward The Wind in the Willows at price 3.95
/// B accepts the offer, leaving them with 0.718124999999997 remaining funds
/// A learns that the split-proposal for The Wind in the Willows was accepted
/// A has bought everything they wanted!
/// The order for The Wind in the Willows has id 10001485, and will be delivered on March 9th
/// # The Code
/// ## Type Declarations
/// First, we declare *assertion types* for our protocol.
var bookQuote = Syndicate.Struct.makeConstructor("bookQuote", ["title","price"]);
var order = Syndicate.Struct.makeConstructor("order", ["title","price","id","deliveryDate"]);
var splitProposal = Syndicate.Struct.makeConstructor("splitProposal", ["title","price","contribution","accepted"]);
/// ## Utilities
/// This routine is under consideration for possible addition to the
/// core library.
///
function whileRelevantAssert(P) {
(function () {
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(P, 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.observe(P), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.observe(P), metalevel: 0 }; }), (function() {})).completeBuild(); })();
}
/// ## Implementation: SELLER
function seller() {
Syndicate.Actor.spawnActor(new Object(), function() {
/// We give our actor two state variables: a dictionary recording our
/// inventory of books (mapping title to price), and a counter
/// tracking the next order ID to be allocated.
this.books = {
"The Wind in the Willows": 3.95,
"Catch 22": 2.22,
"Candide": 34.95
};
this.nextOrderId = 10001483;
/// The seller responds to interest in bookQuotes by asserting a
/// responsive record, if one exists.
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.observe(bookQuote(_, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.observe(bookQuote((Syndicate._$("title")), _)), metalevel: 0 }; }), (function(title) {
var _cachedAssertion1468253139911_0 = (function() { var _ = Syndicate.__; return Syndicate.observe(bookQuote(title, _)); })();
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(bookQuote(title, title in this.books ? this.books[title] : false), 0); }))
.onEvent(true, "retracted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(_cachedAssertion1468253139911_0, 0); }), (function() { var _ = Syndicate.__; return { assertion: _cachedAssertion1468253139911_0, metalevel: 0 }; }), (function() {})).completeBuild(); })).completeBuild(); })();
/// It also responds to order requests.
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.observe(order(_, _, _, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.observe(order((Syndicate._$("title")), (Syndicate._$("offerPrice")), _, _)), metalevel: 0 }; }), (function(title, offerPrice) {
/// We cannot sell a book we do not have, and we will not sell for
/// less than our asking price.
var askingPrice = title in this.books ? this.books[title] : false;
if ((askingPrice === false) || (offerPrice < askingPrice)) {
whileRelevantAssert(order(title, offerPrice, false, false));
} else {
/// But if we can sell it, we do so by allocating an order ID and
/// replying to the orderer.
var orderId = this.nextOrderId++;
delete this.books[title];
Syndicate.Actor.spawnActor(new Object(), function() {
whileRelevantAssert(order(title, offerPrice, orderId, "March 9th"));
});
}
})).completeBuild(); })();
});
}
/// ## Implementation: SPLIT-PROPOSER and book-quote-requestor
function buyerA() {
Syndicate.Actor.spawnActor(new Object(), function() {
var self = this;
/// Our actor remembers which books remain on its shopping list, and
/// tries to buy them one at a time, sharing costs with `buyerB`.
self.titles = ["Catch 22",
"Encyclopaedia Brittannica",
"Candide",
"The Wind in the Willows"];
/// JavaScript's callback-oriented blocking means that we express our
/// loop in almost a tail-recursive style, using helper functions
/// `buyBooks` and `trySplit`.
buyBooks();
function buyBooks() {
if (self.titles.length === 0) {
console.log("A has bought everything they wanted!");
return;
}
var title = self.titles.shift();
/// First, retrieve a quote for the title, and analyze the result.
(function () {
Syndicate.Actor.createFacet()
.onEvent(true, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(bookQuote(title, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: bookQuote(title, (Syndicate._$("price"))), metalevel: 0 }; }), (function(price) {
if (price === false) {
console.log("A learns that "+title+" is out-of-stock.");
buyBooks();
} else {
console.log("A learns that the price of "+title+" is "+price);
/// Next, repeatedly make split offers to a SPLIT-DISPOSER until
/// either one is accepted, or the contribution from the
/// SPLIT-DISPOSER becomes pointlessly small. We start the process by
/// offering to split the price of the book evenly.
trySplit(title, price, price / 2);
}
})).completeBuild(); })();
}
function trySplit(title, price, contribution) {
console.log("A makes an offer to split the price of "+title+
" contributing "+contribution);
/// If we are about to offer to split the price, but the other buyer
/// would contribute less than 10c, then it's not worth bothering; we
/// may as well buy it ourselves. Another version of the program could
/// perform the BUYER role here.
if (contribution > (price - 0.10)) {
console.log("A gives up on "+title+".");
buyBooks();
} else {
/// Make our proposal, and wait for a response.
(function () {
Syndicate.Actor.createFacet()
.onEvent(true, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(splitProposal(title, price, contribution, true), 0); }), (function() { var _ = Syndicate.__; return { assertion: splitProposal(title, price, contribution, true), metalevel: 0 }; }), (function() {
console.log("A learns that the split-proposal for "+title+" was accepted");
buyBooks();
}))
.onEvent(true, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(splitProposal(title, price, contribution, false), 0); }), (function() { var _ = Syndicate.__; return { assertion: splitProposal(title, price, contribution, false), metalevel: 0 }; }), (function() {
console.log("A learns that the split-proposal for "+title+" was rejected");
trySplit(title, price, contribution + ((price - contribution) / 2));
})).completeBuild(); })();
}
}
});
}
/// ## Implementation: SPLIT-DISPOSER and BUYER
function buyerB() {
Syndicate.Actor.spawnActor(new Object(), function() {
/// This actor maintains a record of the amount of money it has left
/// to spend.
this.funds = 5.00;
/// It spends its time waiting for a SPLIT-PROPOSER to offer a
/// `splitProposal`.
(function () {
Syndicate.Actor.createFacet()
.onEvent(false, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(Syndicate.observe(splitProposal(_, _, _, _)), 0); }), (function() { var _ = Syndicate.__; return { assertion: Syndicate.observe(splitProposal((Syndicate._$("title")), (Syndicate._$("price")), (Syndicate._$("theirContribution")), _)), metalevel: 0 }; }), (function(title, price, theirContribution) {
var myContribution = price - theirContribution;
console.log("B is being asked to contribute "+myContribution+" toward "+title+
" at price "+price);
/// We may not be able to afford contributing this much.
if (myContribution > this.funds) {
console.log("B hasn't enough funds ("+this.funds+" remaining)");
whileRelevantAssert(splitProposal(title, price, theirContribution, false));
} else {
/// But if we *can* afford it, update our remaining funds and spawn a
/// small actor to handle the actual purchase now that we have agreed
/// on a split.
var remainingFunds = this.funds - myContribution;
console.log("B accepts the offer, leaving them with "+remainingFunds+" remaining funds");
this.funds = remainingFunds;
Syndicate.Actor.spawnActor(new Object(), function() {
(function () {
Syndicate.Actor.createFacet()
.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(splitProposal(title, price, theirContribution, true), 0); }))
.onEvent(true, "asserted", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(order(title, price, _, _), 0); }), (function() { var _ = Syndicate.__; return { assertion: order(title, price, (Syndicate._$("id")), (Syndicate._$("date"))), metalevel: 0 }; }), (function(id, date) {
console.log("The order for "+title+" has id "+id+
", and will be delivered on "+date);
})).completeBuild(); })();
});
}
})).completeBuild(); })();
});
}
/// ## Starting Configuration
new Syndicate.Ground(function () {
seller();
buyerA();
buyerB();
}).startStepping();

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/// ---
/// title: Two-Party Buyer Protocol
/// ---
/// <!--
var Syndicate = require('../../src/main.js');
/// -->
/// This is an extended two-buyer book-purchase protocol, based
/// loosely on an example given in:
///
/// > K. Honda, N. Yoshida, and M. Carbone, “Multiparty asynchronous
/// > session types,” POPL 2008.
/// # The Scenario
///
/// A book-seller responds to requests for book prices when asked. A
/// pair of prospective buyers run through a shopping list. For each
/// book, the first buyer offers to split the cost of the book with
/// the second. If the second has enough money left, it accepts;
/// otherwise, it rejects the offer, and the first buyer tries a
/// different split. If the second buyer agrees to a split, it then
/// negotiates the purchase of the book with the book-seller.
/// # The Protocol
/// ## Role: SELLER
///
/// - when interest in `bookQuote($title, _)` appears,
/// asserts `bookQuote(title, Maybe Float)`, `false` meaning not available,
/// and otherwise an asking-price.
/// - when interest in `order($title, $offer-price, _, _)` appears,
/// asserts `order(title, offer-price, false, false)` for "no sale", otherwise
/// `order(title, offer-price, PositiveInteger, String)`, an accepted sale.
/// ## Role: BUYER
///
/// - observes `bookQuote(title, $price)` to learn prices.
/// - observes `order(title, offer-price, $id, $delivery-date)` to make orders.
/// ## Role: SPLIT-PROPOSER
///
/// - observes `splitProposal(title, asking-price, contribution, $accepted)`
/// to make a split-proposal and learn whether it was accepted or not.
/// ## Role: SPLIT-DISPOSER
///
/// - when interest in `splitProposal($title, $asking-price, $contribution, _)`
/// appears, asserts `splitProposal(title, askingPrice, contribution, true)`
/// to indicate they are willing to go through with the deal, in which case
/// they then perform the role of BUYER for title/asking-price, or asserts
/// `splitProposal(title, asking-price, contribution, false)` to indicate they
/// are unwilling to go through with the deal.
/// # A Sample Run
///
/// Run the program with `../../bin/syndicatec index.js | node` from a
/// checkout of the Syndicate repository.
///
/// A learns that the price of Catch 22 is 2.22
/// A makes an offer to split the price of Catch 22 contributing 1.11
/// B is being asked to contribute 1.11 toward Catch 22 at price 2.22
/// B accepts the offer, leaving them with 3.8899999999999997 remaining funds
/// A learns that the split-proposal for Catch 22 was accepted
/// A learns that Encyclopaedia Brittannica is out-of-stock.
/// The order for Catch 22 has id 10001483, and will be delivered on March 9th
/// A learns that the price of Candide is 34.95
/// A makes an offer to split the price of Candide contributing 17.475
/// B is being asked to contribute 17.475 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 26.212500000000002
/// B is being asked to contribute 8.7375 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 30.581250000000004
/// B is being asked to contribute 4.368749999999999 toward Candide at price 34.95
/// B hasn't enough funds (3.8899999999999997 remaining)
/// A learns that the split-proposal for Candide was rejected
/// A makes an offer to split the price of Candide contributing 32.765625
/// B is being asked to contribute 2.184375000000003 toward Candide at price 34.95
/// B accepts the offer, leaving them with 1.7056249999999968 remaining funds
/// A learns that the split-proposal for Candide was accepted
/// A learns that the price of The Wind in the Willows is 3.95
/// A makes an offer to split the price of The Wind in the Willows contributing 1.975
/// The order for Candide has id 10001484, and will be delivered on March 9th
/// B is being asked to contribute 1.975 toward The Wind in the Willows at price 3.95
/// B hasn't enough funds (1.7056249999999968 remaining)
/// A learns that the split-proposal for The Wind in the Willows was rejected
/// A makes an offer to split the price of The Wind in the Willows contributing 2.9625000000000004
/// B is being asked to contribute 0.9874999999999998 toward The Wind in the Willows at price 3.95
/// B accepts the offer, leaving them with 0.718124999999997 remaining funds
/// A learns that the split-proposal for The Wind in the Willows was accepted
/// A has bought everything they wanted!
/// The order for The Wind in the Willows has id 10001485, and will be delivered on March 9th
/// # The Code
/// ## Type Declarations
/// First, we declare *assertion types* for our protocol.
assertion type bookQuote(title, price);
assertion type order(title, price, id, deliveryDate);
assertion type splitProposal(title, price, contribution, accepted);
/// ## Utilities
/// This routine is under consideration for possible addition to the
/// core library.
///
function whileRelevantAssert(P) {
react {
assert P;
} until {
case retracted Syndicate.observe(P);
}
}
/// ## Implementation: SELLER
function seller() {
actor {
/// We give our actor two state variables: a dictionary recording our
/// inventory of books (mapping title to price), and a counter
/// tracking the next order ID to be allocated.
this.books = {
"The Wind in the Willows": 3.95,
"Catch 22": 2.22,
"Candide": 34.95
};
this.nextOrderId = 10001483;
/// The seller responds to interest in bookQuotes by asserting a
/// responsive record, if one exists.
react {
during Syndicate.observe(bookQuote($title, _)) {
assert bookQuote(title, title in this.books ? this.books[title] : false);
}
}
/// It also responds to order requests.
react {
on asserted Syndicate.observe(order($title, $offerPrice, _, _)) {
/// We cannot sell a book we do not have, and we will not sell for
/// less than our asking price.
var askingPrice = title in this.books ? this.books[title] : false;
if ((askingPrice === false) || (offerPrice < askingPrice)) {
whileRelevantAssert(order(title, offerPrice, false, false));
} else {
/// But if we can sell it, we do so by allocating an order ID and
/// replying to the orderer.
var orderId = this.nextOrderId++;
delete this.books[title];
actor {
whileRelevantAssert(order(title, offerPrice, orderId, "March 9th"));
}
}
}
}
}
}
/// ## Implementation: SPLIT-PROPOSER and book-quote-requestor
function buyerA() {
actor {
var self = this;
/// Our actor remembers which books remain on its shopping list, and
/// tries to buy them one at a time, sharing costs with `buyerB`.
self.titles = ["Catch 22",
"Encyclopaedia Brittannica",
"Candide",
"The Wind in the Willows"];
/// JavaScript's callback-oriented blocking means that we express our
/// loop in almost a tail-recursive style, using helper functions
/// `buyBooks` and `trySplit`.
buyBooks();
function buyBooks() {
if (self.titles.length === 0) {
console.log("A has bought everything they wanted!");
return;
}
var title = self.titles.shift();
/// First, retrieve a quote for the title, and analyze the result.
react until {
case asserted bookQuote(title, $price) {
if (price === false) {
console.log("A learns that "+title+" is out-of-stock.");
buyBooks();
} else {
console.log("A learns that the price of "+title+" is "+price);
/// Next, repeatedly make split offers to a SPLIT-DISPOSER until
/// either one is accepted, or the contribution from the
/// SPLIT-DISPOSER becomes pointlessly small. We start the process by
/// offering to split the price of the book evenly.
trySplit(title, price, price / 2);
}
}
}
}
function trySplit(title, price, contribution) {
console.log("A makes an offer to split the price of "+title+
" contributing "+contribution);
/// If we are about to offer to split the price, but the other buyer
/// would contribute less than 10c, then it's not worth bothering; we
/// may as well buy it ourselves. Another version of the program could
/// perform the BUYER role here.
if (contribution > (price - 0.10)) {
console.log("A gives up on "+title+".");
buyBooks();
} else {
/// Make our proposal, and wait for a response.
react until {
case asserted splitProposal(title, price, contribution, true) {
console.log("A learns that the split-proposal for "+title+" was accepted");
buyBooks();
}
case asserted splitProposal(title, price, contribution, false) {
console.log("A learns that the split-proposal for "+title+" was rejected");
trySplit(title, price, contribution + ((price - contribution) / 2));
}
}
}
}
}
}
/// ## Implementation: SPLIT-DISPOSER and BUYER
function buyerB() {
actor {
/// This actor maintains a record of the amount of money it has left
/// to spend.
this.funds = 5.00;
/// It spends its time waiting for a SPLIT-PROPOSER to offer a
/// `splitProposal`.
react {
on asserted Syndicate.observe(splitProposal($title, $price, $theirContribution, _)) {
var myContribution = price - theirContribution;
console.log("B is being asked to contribute "+myContribution+" toward "+title+
" at price "+price);
/// We may not be able to afford contributing this much.
if (myContribution > this.funds) {
console.log("B hasn't enough funds ("+this.funds+" remaining)");
whileRelevantAssert(splitProposal(title, price, theirContribution, false));
} else {
/// But if we *can* afford it, update our remaining funds and spawn a
/// small actor to handle the actual purchase now that we have agreed
/// on a split.
var remainingFunds = this.funds - myContribution;
console.log("B accepts the offer, leaving them with "+remainingFunds+" remaining funds");
this.funds = remainingFunds;
actor {
react {
/// While waiting for order confirmation, take the opportunity to
/// signal to our SPLIT-PROPOSER that we accepted their proposal.
assert splitProposal(title, price, theirContribution, true);
/// When order confirmation arrives, this purchase is completed.
} until {
case asserted order(title, price, $id, $date) {
console.log("The order for "+title+" has id "+id+
", and will be delivered on "+date);
}
}
}
}
}
}
}
}
/// ## Starting Configuration
ground dataspace {
seller();
buyerA();
buyerB();
}

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---
title: Two-Party Buyer Protocol
---
<!--
var Syndicate = require('../../src/main.js');
-->
This is an extended two-buyer book-purchase protocol, based
loosely on an example given in:
> K. Honda, N. Yoshida, and M. Carbone, “Multiparty asynchronous
> session types,” POPL 2008.
# The Scenario
A book-seller responds to requests for book prices when asked. A
pair of prospective buyers run through a shopping list. For each
book, the first buyer offers to split the cost of the book with
the second. If the second has enough money left, it accepts;
otherwise, it rejects the offer, and the first buyer tries a
different split. If the second buyer agrees to a split, it then
negotiates the purchase of the book with the book-seller.
# The Protocol
## Role: SELLER
- when interest in `bookQuote($title, _)` appears,
asserts `bookQuote(title, Maybe Float)`, `false` meaning not available,
and otherwise an asking-price.
- when interest in `order($title, $offer-price, _, _)` appears,
asserts `order(title, offer-price, false, false)` for "no sale", otherwise
`order(title, offer-price, PositiveInteger, String)`, an accepted sale.
## Role: BUYER
- observes `bookQuote(title, $price)` to learn prices.
- observes `order(title, offer-price, $id, $delivery-date)` to make orders.
## Role: SPLIT-PROPOSER
- observes `splitProposal(title, asking-price, contribution, $accepted)`
to make a split-proposal and learn whether it was accepted or not.
## Role: SPLIT-DISPOSER
- when interest in `splitProposal($title, $asking-price, $contribution, _)`
appears, asserts `splitProposal(title, askingPrice, contribution, true)`
to indicate they are willing to go through with the deal, in which case
they then perform the role of BUYER for title/asking-price, or asserts
`splitProposal(title, asking-price, contribution, false)` to indicate they
are unwilling to go through with the deal.
# A Sample Run
Run the program with `../../bin/syndicatec index.js | node` from a
checkout of the Syndicate repository.
A learns that the price of Catch 22 is 2.22
A makes an offer to split the price of Catch 22 contributing 1.11
B is being asked to contribute 1.11 toward Catch 22 at price 2.22
B accepts the offer, leaving them with 3.8899999999999997 remaining funds
A learns that the split-proposal for Catch 22 was accepted
A learns that Encyclopaedia Brittannica is out-of-stock.
The order for Catch 22 has id 10001483, and will be delivered on March 9th
A learns that the price of Candide is 34.95
A makes an offer to split the price of Candide contributing 17.475
B is being asked to contribute 17.475 toward Candide at price 34.95
B hasn't enough funds (3.8899999999999997 remaining)
A learns that the split-proposal for Candide was rejected
A makes an offer to split the price of Candide contributing 26.212500000000002
B is being asked to contribute 8.7375 toward Candide at price 34.95
B hasn't enough funds (3.8899999999999997 remaining)
A learns that the split-proposal for Candide was rejected
A makes an offer to split the price of Candide contributing 30.581250000000004
B is being asked to contribute 4.368749999999999 toward Candide at price 34.95
B hasn't enough funds (3.8899999999999997 remaining)
A learns that the split-proposal for Candide was rejected
A makes an offer to split the price of Candide contributing 32.765625
B is being asked to contribute 2.184375000000003 toward Candide at price 34.95
B accepts the offer, leaving them with 1.7056249999999968 remaining funds
A learns that the split-proposal for Candide was accepted
A learns that the price of The Wind in the Willows is 3.95
A makes an offer to split the price of The Wind in the Willows contributing 1.975
The order for Candide has id 10001484, and will be delivered on March 9th
B is being asked to contribute 1.975 toward The Wind in the Willows at price 3.95
B hasn't enough funds (1.7056249999999968 remaining)
A learns that the split-proposal for The Wind in the Willows was rejected
A makes an offer to split the price of The Wind in the Willows contributing 2.9625000000000004
B is being asked to contribute 0.9874999999999998 toward The Wind in the Willows at price 3.95
B accepts the offer, leaving them with 0.718124999999997 remaining funds
A learns that the split-proposal for The Wind in the Willows was accepted
A has bought everything they wanted!
The order for The Wind in the Willows has id 10001485, and will be delivered on March 9th
# The Code
## Type Declarations
First, we declare *assertion types* for our protocol.
assertion type bookQuote(title, price);
assertion type order(title, price, id, deliveryDate);
assertion type splitProposal(title, price, contribution, accepted);
## Utilities
This routine is under consideration for possible addition to the
core library.
function whileRelevantAssert(P) {
react {
assert P;
} until {
case retracted Syndicate.observe(P);
}
}
## Implementation: SELLER
function seller() {
actor {
We give our actor two state variables: a dictionary recording our
inventory of books (mapping title to price), and a counter
tracking the next order ID to be allocated.
this.books = {
"The Wind in the Willows": 3.95,
"Catch 22": 2.22,
"Candide": 34.95
};
this.nextOrderId = 10001483;
The seller responds to interest in bookQuotes by asserting a
responsive record, if one exists.
react {
during Syndicate.observe(bookQuote($title, _)) {
assert bookQuote(title, title in this.books ? this.books[title] : false);
}
}
It also responds to order requests.
react {
on asserted Syndicate.observe(order($title, $offerPrice, _, _)) {
We cannot sell a book we do not have, and we will not sell for
less than our asking price.
var askingPrice = title in this.books ? this.books[title] : false;
if ((askingPrice === false) || (offerPrice < askingPrice)) {
whileRelevantAssert(order(title, offerPrice, false, false));
} else {
But if we can sell it, we do so by allocating an order ID and
replying to the orderer.
var orderId = this.nextOrderId++;
delete this.books[title];
actor {
whileRelevantAssert(order(title, offerPrice, orderId, "March 9th"));
}
}
}
}
}
}
## Implementation: SPLIT-PROPOSER and book-quote-requestor
function buyerA() {
actor {
var self = this;
Our actor remembers which books remain on its shopping list, and
tries to buy them one at a time, sharing costs with `buyerB`.
self.titles = ["Catch 22",
"Encyclopaedia Brittannica",
"Candide",
"The Wind in the Willows"];
JavaScript's callback-oriented blocking means that we express our
loop in almost a tail-recursive style, using helper functions
`buyBooks` and `trySplit`.
buyBooks();
function buyBooks() {
if (self.titles.length === 0) {
console.log("A has bought everything they wanted!");
return;
}
var title = self.titles.shift();
First, retrieve a quote for the title, and analyze the result.
react until {
case asserted bookQuote(title, $price) {
if (price === false) {
console.log("A learns that "+title+" is out-of-stock.");
buyBooks();
} else {
console.log("A learns that the price of "+title+" is "+price);
Next, repeatedly make split offers to a SPLIT-DISPOSER until
either one is accepted, or the contribution from the
SPLIT-DISPOSER becomes pointlessly small. We start the process by
offering to split the price of the book evenly.
trySplit(title, price, price / 2);
}
}
}
}
function trySplit(title, price, contribution) {
console.log("A makes an offer to split the price of "+title+
" contributing "+contribution);
If we are about to offer to split the price, but the other buyer
would contribute less than 10c, then it's not worth bothering; we
may as well buy it ourselves. Another version of the program could
perform the BUYER role here.
if (contribution > (price - 0.10)) {
console.log("A gives up on "+title+".");
buyBooks();
} else {
Make our proposal, and wait for a response.
react until {
case asserted splitProposal(title, price, contribution, true) {
console.log("A learns that the split-proposal for "+title+" was accepted");
buyBooks();
}
case asserted splitProposal(title, price, contribution, false) {
console.log("A learns that the split-proposal for "+title+" was rejected");
trySplit(title, price, contribution + ((price - contribution) / 2));
}
}
}
}
}
}
## Implementation: SPLIT-DISPOSER and BUYER
function buyerB() {
actor {
This actor maintains a record of the amount of money it has left
to spend.
this.funds = 5.00;
It spends its time waiting for a SPLIT-PROPOSER to offer a
`splitProposal`.
react {
on asserted Syndicate.observe(splitProposal($title, $price, $theirContribution, _)) {
var myContribution = price - theirContribution;
console.log("B is being asked to contribute "+myContribution+" toward "+title+
" at price "+price);
We may not be able to afford contributing this much.
if (myContribution > this.funds) {
console.log("B hasn't enough funds ("+this.funds+" remaining)");
whileRelevantAssert(splitProposal(title, price, theirContribution, false));
} else {
But if we *can* afford it, update our remaining funds and spawn a
small actor to handle the actual purchase now that we have agreed
on a split.
var remainingFunds = this.funds - myContribution;
console.log("B accepts the offer, leaving them with "+remainingFunds+" remaining funds");
this.funds = remainingFunds;
actor {
react {
While waiting for order confirmation, take the opportunity to
signal to our SPLIT-PROPOSER that we accepted their proposal.
assert splitProposal(title, price, theirContribution, true);
When order confirmation arrives, this purchase is completed.
} until {
case asserted order(title, price, $id, $date) {
console.log("The order for "+title+" has id "+id+
", and will be delivered on "+date);
}
}
}
}
}
}
}
}
## Starting Configuration
ground dataspace {
seller();
buyerA();
buyerB();
}