")" -- risingEdge
+
+ FacetStateTransition
+ = case FacetTransitionEventPattern Block -- withContinuation
+ | case FacetTransitionEventPattern #(sc) -- noContinuation
+
+ FacetPattern
+ = LeftHandSideExpression metalevel decimalIntegerLiteral -- withMetalevel
+ | LeftHandSideExpression -- noMetalevel
+
+ //---------------------------------------------------------------------------
+ // Keywords. We don't add them to the "keyword" production because
+ // we don't want to make them unavailable to programs as
+ // identifiers.
+
+ actor = "actor" ~identifierPart
+ assert = "assert" ~identifierPart
+ asserted = "asserted" ~identifierPart
+ assertion = "assertion" ~identifierPart
+ done = "done" ~identifierPart
+ during = "during" ~identifierPart
+ forever = "forever" ~identifierPart
+ ground = "ground" ~identifierPart
+ init = "init" ~identifierPart
+ message = "message" ~identifierPart
+ metalevel = "metalevel" ~identifierPart
+ network = "network" ~identifierPart
+ on = "on" ~identifierPart
+ retracted = "retracted" ~identifierPart
+ state = "state" ~identifierPart
+ type = "type" ~identifierPart
+ until = "until" ~identifierPart
+}
diff --git a/js/dist/README.md b/js/dist/README.md
new file mode 100644
index 0000000..b1239b6
--- /dev/null
+++ b/js/dist/README.md
@@ -0,0 +1 @@
+Directory for build products, checked in to the repo for ease-of-use.
diff --git a/js/examples/button/index.expanded.js b/js/examples/button/index.expanded.js
new file mode 100644
index 0000000..1d21de6
--- /dev/null
+++ b/js/examples/button/index.expanded.js
@@ -0,0 +1,45 @@
+"use strict";
+var DOM = (function() {
+ var $SyndicateMeta$ = {
+ label: "DOM",
+ arguments: ["containerSelector","fragmentClass","spec"]
+ };
+ return function DOM(containerSelector, fragmentClass, spec) {
+ return {
+ "containerSelector": containerSelector,
+ "fragmentClass": fragmentClass,
+ "spec": spec,
+ "$SyndicateMeta$": $SyndicateMeta$
+ };
+ };
+})();
+var jQuery = (function() {
+ var $SyndicateMeta$ = {
+ label: "jQuery",
+ arguments: ["selector","eventType","event"]
+ };
+ return function jQuery(selector, eventType, event) {
+ return {
+ "selector": selector,
+ "eventType": eventType,
+ "event": event,
+ "$SyndicateMeta$": $SyndicateMeta$
+ };
+ };
+})();
+
+$(document).ready(function() {
+ new Syndicate.Ground(function () {
+ Syndicate.DOM.spawnDOMDriver();
+ Syndicate.JQuery.spawnJQueryDriver();
+
+ Syndicate.Actor.spawnActor(new Object(), function() {
+ this.counter = 0;
+ Syndicate.Actor.createFacet()
+.addAssertion((function() { var _ = Syndicate.__; return Syndicate.Patch.assert(DOM('#button-label','',Syndicate.seal(this.counter)), 0); }))
+.onEvent(false, "message", (function() { var _ = Syndicate.__; return Syndicate.Patch.sub(jQuery('#counter','click',_), 0); }), (function() { var _ = Syndicate.__; return { assertion: jQuery('#counter','click',_), metalevel: 0 }; }), (function() {
+ this.counter++;
+ })).completeBuild();
+ });
+ }).startStepping();
+});
diff --git a/js/examples/button/index.html b/js/examples/button/index.html
new file mode 100644
index 0000000..184d544
--- /dev/null
+++ b/js/examples/button/index.html
@@ -0,0 +1,22 @@
+
+
+
+ Syndicate: Button Example
+
+
+
+
+
+
+
+
+ Button Example
+
+
+ Source code: index.js
+
+
+ Expanded source code: index.expanded.js
+
+
+
diff --git a/js/examples/button/index.js b/js/examples/button/index.js
new file mode 100644
index 0000000..b4bda3c
--- /dev/null
+++ b/js/examples/button/index.js
@@ -0,0 +1,19 @@
+assertion type DOM(containerSelector, fragmentClass, spec);
+assertion type jQuery(selector, eventType, event);
+
+$(document).ready(function() {
+ ground network {
+ Syndicate.DOM.spawnDOMDriver();
+ Syndicate.JQuery.spawnJQueryDriver();
+
+ actor {
+ this.counter = 0;
+ forever {
+ assert DOM('#button-label', '', Syndicate.seal(this.counter));
+ on message jQuery('#counter', 'click', _) {
+ this.counter++;
+ }
+ }
+ }
+ }
+});
diff --git a/js/examples/dom/index.html b/js/examples/dom/index.html
new file mode 100644
index 0000000..3b90a38
--- /dev/null
+++ b/js/examples/dom/index.html
@@ -0,0 +1,16 @@
+
+
+
+ Syndicate: DOM Example
+
+
+
+
+
+
+ DOM example
+
+
+
+
+
diff --git a/js/examples/dom/index.js b/js/examples/dom/index.js
new file mode 100644
index 0000000..de51c5f
--- /dev/null
+++ b/js/examples/dom/index.js
@@ -0,0 +1,56 @@
+var G;
+$(document).ready(function () {
+ var Network = Syndicate.Network;
+ var sub = Syndicate.sub;
+ var assert = Syndicate.assert;
+ var retract = Syndicate.retract;
+ var seal = Syndicate.seal;
+ var __ = Syndicate.__;
+ var _$ = Syndicate._$;
+
+ G = new Syndicate.Ground(function () {
+ console.log('starting ground boot');
+
+ Syndicate.DOM.spawnDOMDriver();
+
+ Network.spawn({
+ boot: function () {
+ return assert(["DOM", "#clicker-holder", "clicker",
+ seal(["button", ["span", [["style", "font-style: italic"]], "Click me!"]])])
+ .andThen(sub(["jQuery", "button.clicker", "click", __]));
+ },
+ handleEvent: function (e) {
+ if (e.type === "message" && e.message[0] === "jQuery") {
+ Network.send("bump_count");
+ }
+ }
+ });
+
+ Network.spawn({
+ counter: 0,
+ boot: function () {
+ this.updateState();
+ return sub("bump_count");
+ },
+ updateState: function () {
+ Network.stateChange(retract(["DOM", __, __, __])
+ .andThen(assert(["DOM", "#counter-holder", "counter",
+ seal(["div",
+ ["p", "The current count is: ",
+ this.counter]])])));
+ },
+ handleEvent: function (e) {
+ if (e.type === "message" && e.message === "bump_count") {
+ this.counter++;
+ this.updateState();
+ }
+ }
+ });
+ });
+
+ G.network.onStateChange = function (mux, patch) {
+ $("#spy-holder").text(Syndicate.prettyTrie(mux.routingTable));
+ };
+
+ G.startStepping();
+});
diff --git a/js/examples/jquery/index.html b/js/examples/jquery/index.html
new file mode 100644
index 0000000..d5bea5b
--- /dev/null
+++ b/js/examples/jquery/index.html
@@ -0,0 +1,16 @@
+
+
+
+ Syndicate: jQuery Example
+
+
+
+
+
+
+ jQuery example
+
+ 0
+
+
+
diff --git a/js/examples/jquery/index.js b/js/examples/jquery/index.js
new file mode 100644
index 0000000..1377c27
--- /dev/null
+++ b/js/examples/jquery/index.js
@@ -0,0 +1,31 @@
+"use strict";
+
+var G;
+$(document).ready(function () {
+ var Network = Syndicate.Network;
+ var sub = Syndicate.sub;
+ var __ = Syndicate.__;
+ var _$ = Syndicate._$;
+
+ G = new Syndicate.Ground(function () {
+ console.log('starting ground boot');
+
+ Syndicate.JQuery.spawnJQueryDriver();
+
+ Network.spawn({
+ boot: function () {
+ return sub(['jQuery', '#clicker', 'click', __]);
+ },
+ handleEvent: function (e) {
+ if (e.type === 'message' && e.message[0] === 'jQuery' && e.message[1] === '#clicker') {
+ var r = $('#result');
+ r.html(Number(r.html()) + 1);
+ }
+ }
+ });
+ });
+ G.network.onStateChange = function (mux, patch) {
+ $("#spy-holder").text(Syndicate.prettyTrie(mux.routingTable));
+ };
+ G.startStepping();
+});
diff --git a/js/examples/smoketest-dsl/index.html b/js/examples/smoketest-dsl/index.html
new file mode 100644
index 0000000..b8208b7
--- /dev/null
+++ b/js/examples/smoketest-dsl/index.html
@@ -0,0 +1,14 @@
+
+
+
+ Syndicate: Smoketest with DSL
+
+
+
+
+
+
+
+ Smoketest
+
+
diff --git a/js/examples/smoketest-dsl/index.js b/js/examples/smoketest-dsl/index.js
new file mode 100644
index 0000000..3f16981
--- /dev/null
+++ b/js/examples/smoketest-dsl/index.js
@@ -0,0 +1,31 @@
+assertion type beep(counter);
+
+ground network {
+ console.log('starting ground boot');
+
+ actor {
+ until {
+ case asserted Syndicate.observe(beep(_)) {
+ var counter = 0;
+ state {
+ init {
+ :: beep(counter++);
+ }
+ on message beep(_) {
+ :: beep(counter++);
+ }
+ } until {
+ case (counter >= 10);
+ }
+ }
+ }
+ }
+
+ actor {
+ forever {
+ on message $m {
+ console.log("Got message:", m);
+ }
+ }
+ }
+}
diff --git a/js/examples/smoketest/index.html b/js/examples/smoketest/index.html
new file mode 100644
index 0000000..f5a020e
--- /dev/null
+++ b/js/examples/smoketest/index.html
@@ -0,0 +1,13 @@
+
+
+
+ Syndicate: Smoketest
+
+
+
+
+
+
+ Smoketest
+
+
diff --git a/js/examples/smoketest/index.js b/js/examples/smoketest/index.js
new file mode 100644
index 0000000..f4f90e4
--- /dev/null
+++ b/js/examples/smoketest/index.js
@@ -0,0 +1,33 @@
+"use strict";
+
+var G;
+$(document).ready(function () {
+ var Network = Syndicate.Network;
+ var sub = Syndicate.sub;
+ var __ = Syndicate.__;
+ var _$ = Syndicate._$;
+
+ G = new Syndicate.Ground(function () {
+ console.log('starting ground boot');
+
+ Network.spawn({
+ counter: 0,
+ boot: function () {},
+ handleEvent: function (e) {},
+ step: function () {
+ Network.send(["beep", this.counter++]);
+ return this.counter <= 10;
+ }
+ });
+
+ Network.spawn({
+ boot: function () { return sub(["beep", __]); },
+ handleEvent: function (e) {
+ if (e.type === 'message') {
+ console.log("beep!", e.message[1]);
+ }
+ }
+ });
+ });
+ G.startStepping();
+});
diff --git a/js/examples/textfield-dsl/index.html b/js/examples/textfield-dsl/index.html
new file mode 100644
index 0000000..9684bd4
--- /dev/null
+++ b/js/examples/textfield-dsl/index.html
@@ -0,0 +1,23 @@
+
+
+
+ Syndicate: Textfield Example (DSL variation)
+
+
+
+
+
+
+
+
+ Textfield Example (DSL variation)
+
+ After Hesam
+ Samimi's paper.
+
+ Field contents:
+ Search
+
+
+
+
diff --git a/js/examples/textfield-dsl/index.js b/js/examples/textfield-dsl/index.js
new file mode 100644
index 0000000..5f33832
--- /dev/null
+++ b/js/examples/textfield-dsl/index.js
@@ -0,0 +1,169 @@
+///////////////////////////////////////////////////////////////////////////
+// GUI
+
+assertion type jQuery(selector, eventType, event);
+assertion type fieldCommand(detail);
+assertion type fieldContents(text, pos);
+assertion type highlight(state);
+
+function escapeText(text) {
+ text = text.replace(/&/g, '&');
+ text = text.replace(//g, '>');
+ text = text.replace(/ /g, ' ');
+ return text;
+}
+
+function piece(text, pos, lo, hi, cls) {
+ return ""+
+ ((pos >= lo && pos < hi)
+ ? (escapeText(text.substring(lo, pos)) +
+ "" +
+ escapeText(text.substring(pos, hi)))
+ : escapeText(text.substring(lo, hi)))
+ + "";
+}
+
+function spawnGui() {
+ actor {
+ this.text = '';
+ this.pos = 0;
+ this.highlightState = false;
+
+ this.updateDisplay = function () {
+ var text = this.text;
+ var pos = this.pos;
+ var highlight = this.highlightState;
+ var hLeft = highlight ? highlight.get(0) : 0;
+ var hRight = highlight ? highlight.get(1) : 0;
+ $("#fieldContents")[0].innerHTML = highlight
+ ? piece(text, pos, 0, hLeft, "normal") +
+ piece(text, pos, hLeft, hRight, "highlight") +
+ piece(text, pos, hRight, text.length + 1, "normal")
+ : piece(text, pos, 0, text.length + 1, "normal");
+ };
+
+ forever {
+ on message jQuery("#inputRow", "+keypress", $event) {
+ var keycode = event.keyCode;
+ var character = String.fromCharCode(event.charCode);
+ if (keycode === 37 /* left */) {
+ :: fieldCommand("cursorLeft");
+ } else if (keycode === 39 /* right */) {
+ :: fieldCommand("cursorRight");
+ } else if (keycode === 9 /* tab */) {
+ // ignore
+ } else if (keycode === 8 /* backspace */) {
+ :: fieldCommand("backspace");
+ } else if (character) {
+ :: fieldCommand(["insert", character]);
+ }
+ }
+
+ on asserted fieldContents($text, $pos) {
+ this.text = text;
+ this.pos = pos;
+ this.updateDisplay();
+ }
+
+ on asserted highlight($state) {
+ this.highlightState = state;
+ this.updateDisplay();
+ }
+ }
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Textfield Model
+
+function spawnModel() {
+ actor {
+ this.fieldContents = "initial";
+ this.cursorPos = this.fieldContents.length; /* positions address gaps between characters */
+
+ forever {
+ assert fieldContents(this.fieldContents, this.cursorPos);
+
+ on message fieldCommand("cursorLeft") {
+ this.cursorPos--;
+ if (this.cursorPos < 0)
+ this.cursorPos = 0;
+ }
+
+ on message fieldCommand("cursorRight") {
+ this.cursorPos++;
+ if (this.cursorPos > this.fieldContents.length)
+ this.cursorPos = this.fieldContents.length;
+ }
+
+ on message fieldCommand("backspace") {
+ if (this.cursorPos > 0) {
+ this.fieldContents =
+ this.fieldContents.substring(0, this.cursorPos - 1) +
+ this.fieldContents.substring(this.cursorPos);
+ this.cursorPos--;
+ }
+ }
+
+ on message fieldCommand(["insert", $newText]) {
+ this.fieldContents =
+ this.fieldContents.substring(0, this.cursorPos) +
+ newText +
+ this.fieldContents.substring(this.cursorPos);
+ this.cursorPos += newText.length;
+ }
+ }
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Search engine
+
+function spawnSearch() {
+ actor {
+ this.fieldContents = "";
+ this.highlight = false;
+
+ this.search = function () {
+ var searchtext = $("#searchBox")[0].value;
+ if (searchtext) {
+ var pos = this.fieldContents.indexOf(searchtext);
+ this.highlight = (pos !== -1) && [pos, pos + searchtext.length];
+ } else {
+ this.highlight = false;
+ }
+ };
+
+ forever {
+ assert highlight(this.highlight);
+
+ on message jQuery("#searchBox", "input", $event) {
+ this.search();
+ }
+
+ on asserted fieldContents($text, _) {
+ this.fieldContents = text;
+ this.search();
+ }
+ }
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Main
+
+$(document).ready(function () {
+ ground network G {
+ Syndicate.JQuery.spawnJQueryDriver();
+ Syndicate.DOM.spawnDOMDriver();
+
+ spawnGui();
+ spawnModel();
+ spawnSearch();
+ }
+
+ G.network.onStateChange = function (mux, patch) {
+ $("#spy-holder").text(Syndicate.prettyTrie(mux.routingTable));
+ };
+});
diff --git a/js/examples/textfield-dsl/style.css b/js/examples/textfield-dsl/style.css
new file mode 100644
index 0000000..d612510
--- /dev/null
+++ b/js/examples/textfield-dsl/style.css
@@ -0,0 +1,12 @@
+#fieldContents {
+ font-family: monospace;
+}
+
+.cursor {
+ border-left: solid red 1px;
+ border-right: solid red 1px;
+}
+
+.highlight {
+ background-color: yellow;
+}
diff --git a/js/examples/textfield/index.html b/js/examples/textfield/index.html
new file mode 100644
index 0000000..42c64ad
--- /dev/null
+++ b/js/examples/textfield/index.html
@@ -0,0 +1,22 @@
+
+
+
+ Syndicate: Textfield Example
+
+
+
+
+
+
+
+ Textfield Example
+
+ After Hesam
+ Samimi's paper.
+
+ Field contents:
+ Search
+
+
+
+
diff --git a/js/examples/textfield/index.js b/js/examples/textfield/index.js
new file mode 100644
index 0000000..ab8991f
--- /dev/null
+++ b/js/examples/textfield/index.js
@@ -0,0 +1,206 @@
+///////////////////////////////////////////////////////////////////////////
+// GUI
+
+var Network = Syndicate.Network;
+var Route = Syndicate.Route;
+var Patch = Syndicate.Patch;
+var __ = Syndicate.__;
+var _$ = Syndicate._$;
+
+function escapeText(text) {
+ text = text.replace(/&/g, '&');
+ text = text.replace(//g, '>');
+ text = text.replace(/ /g, ' ');
+ return text;
+}
+
+function piece(text, pos, lo, hi, cls) {
+ return ""+
+ ((pos >= lo && pos < hi)
+ ? (escapeText(text.substring(lo, pos)) +
+ "" +
+ escapeText(text.substring(pos, hi)))
+ : escapeText(text.substring(lo, hi)))
+ + "";
+}
+
+function spawnGui() {
+ Network.spawn({
+ field: { text: '', pos: 0 },
+ highlight: { state: false },
+
+ boot: function () {
+ return Patch.sub(["jQuery", "#inputRow", "+keypress", __])
+ .andThen(Patch.sub(["fieldContents", __, __]))
+ .andThen(Patch.sub(["highlight", __]));
+ },
+
+ fieldContentsProjection: Route.compileProjection(["fieldContents", _$("text"), _$("pos")]),
+ highlightProjection: Route.compileProjection(["highlight", _$("state")]),
+ handleEvent: function (e) {
+ var self = this;
+ switch (e.type) {
+ case "message":
+ var event = e.message[3];
+ var keycode = event.keyCode;
+ var character = String.fromCharCode(event.charCode);
+ if (keycode === 37 /* left */) {
+ Network.send(["fieldCommand", "cursorLeft"]);
+ } else if (keycode === 39 /* right */) {
+ Network.send(["fieldCommand", "cursorRight"]);
+ } else if (keycode === 9 /* tab */) {
+ // ignore
+ } else if (keycode === 8 /* backspace */) {
+ Network.send(["fieldCommand", "backspace"]);
+ } else if (character) {
+ Network.send(["fieldCommand", ["insert", character]]);
+ }
+ break;
+ case "stateChange":
+ Route.projectObjects(e.patch.added, this.fieldContentsProjection).forEach(function (c) {
+ self.field = c;
+ });
+ Route.projectObjects(e.patch.added, this.highlightProjection).forEach(function (c) {
+ self.highlight = c;
+ });
+ this.updateDisplay();
+ break;
+ }
+ },
+
+ updateDisplay: function () {
+ var text = this.field ? this.field.text : "";
+ var pos = this.field ? this.field.pos : 0;
+ var highlight = this.highlight ? this.highlight.state : false;
+ var hLeft = highlight ? highlight.get(0) : 0;
+ var hRight = highlight ? highlight.get(1) : 0;
+ $("#fieldContents")[0].innerHTML = highlight
+ ? piece(text, pos, 0, hLeft, "normal") +
+ piece(text, pos, hLeft, hRight, "highlight") +
+ piece(text, pos, hRight, text.length + 1, "normal")
+ : piece(text, pos, 0, text.length + 1, "normal");
+ }
+ });
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Textfield Model
+
+function spawnModel() {
+ var initialContents = "initial";
+ Network.spawn({
+ fieldContents: initialContents,
+ cursorPos: initialContents.length, /* positions address gaps between characters */
+
+ boot: function () {
+ this.publishState();
+ return Patch.sub(["fieldCommand", __]);
+ },
+
+ handleEvent: function (e) {
+ if (e.type === "message" && e.message[0] === "fieldCommand") {
+ var command = e.message[1];
+ if (command === "cursorLeft") {
+ this.cursorPos--;
+ if (this.cursorPos < 0)
+ this.cursorPos = 0;
+ } else if (command === "cursorRight") {
+ this.cursorPos++;
+ if (this.cursorPos > this.fieldContents.length)
+ this.cursorPos = this.fieldContents.length;
+ } else if (command === "backspace" && this.cursorPos > 0) {
+ this.fieldContents =
+ this.fieldContents.substring(0, this.cursorPos - 1) +
+ this.fieldContents.substring(this.cursorPos);
+ this.cursorPos--;
+ } else if (command.constructor === Array && command[0] === "insert") {
+ var newText = command[1];
+ this.fieldContents =
+ this.fieldContents.substring(0, this.cursorPos) +
+ newText +
+ this.fieldContents.substring(this.cursorPos);
+ this.cursorPos += newText.length;
+ }
+ this.publishState();
+ }
+ },
+
+ publishState: function () {
+ Network.stateChange(
+ Patch.retract(["fieldContents", __, __])
+ .andThen(Patch.assert(["fieldContents", this.fieldContents, this.cursorPos])));
+ }
+ });
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Search engine
+
+function spawnSearch() {
+ Network.spawn({
+ fieldContents: "",
+ highlight: false,
+
+ boot: function () {
+ this.publishState();
+ return Patch.sub(["jQuery", "#searchBox", "input", __])
+ .andThen(Patch.sub(["fieldContents", __, __]));
+ },
+
+ fieldContentsProjection: Route.compileProjection(["fieldContents", _$("text"), _$("pos")]),
+ handleEvent: function (e) {
+ var self = this;
+ if (e.type === "message" && e.message[0] === "jQuery") {
+ this.search();
+ }
+ if (e.type === "stateChange") {
+ Route.projectObjects(e.patch.added, this.fieldContentsProjection).forEach(function (c) {
+ self.fieldContents = c.text;
+ });
+ this.search();
+ }
+ },
+
+ publishState: function () {
+ Network.stateChange(
+ Patch.retract(["highlight", __])
+ .andThen(Patch.assert(["highlight", this.highlight])));
+ },
+
+ search: function () {
+ var searchtext = $("#searchBox")[0].value;
+ var oldHighlight = this.highlight;
+ if (searchtext) {
+ var pos = this.fieldContents.indexOf(searchtext);
+ this.highlight = (pos !== -1) && [pos, pos + searchtext.length];
+ } else {
+ this.highlight = false;
+ }
+ if (JSON.stringify(oldHighlight) !== JSON.stringify(this.highlight)) {
+ this.publishState();
+ }
+ }
+ });
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Main
+
+var G;
+$(document).ready(function () {
+ G = new Syndicate.Ground(function () {
+ Syndicate.JQuery.spawnJQueryDriver();
+ Syndicate.DOM.spawnDOMDriver();
+
+ spawnGui();
+ spawnModel();
+ spawnSearch();
+ });
+
+ G.network.onStateChange = function (mux, patch) {
+ $("#spy-holder").text(Syndicate.prettyTrie(mux.routingTable));
+ };
+
+ G.startStepping();
+});
diff --git a/js/examples/textfield/style.css b/js/examples/textfield/style.css
new file mode 100644
index 0000000..d612510
--- /dev/null
+++ b/js/examples/textfield/style.css
@@ -0,0 +1,12 @@
+#fieldContents {
+ font-family: monospace;
+}
+
+.cursor {
+ border-left: solid red 1px;
+ border-right: solid red 1px;
+}
+
+.highlight {
+ background-color: yellow;
+}
diff --git a/js/package.json b/js/package.json
new file mode 100644
index 0000000..6f364f4
--- /dev/null
+++ b/js/package.json
@@ -0,0 +1,36 @@
+{
+ "name": "syndicate-js",
+ "version": "0.0.0",
+ "description": "Syndicate in the browser",
+ "homepage": "https://github.com/tonyg/syndicate",
+ "main": "src/main.js",
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/tonyg/syndicate"
+ },
+ "directories": {
+ "bin": "./bin"
+ },
+ "scripts": {
+ "clean": "rm -f dist/*",
+ "build-debug": "browserify src/main.js -d -s Syndicate -o dist/syndicate.js",
+ "build-min": "browserify src/main.js -s Syndicate -o dist/_syndicate.js && uglifyjs dist/_syndicate.js -o dist/syndicate.min.js && rm dist/_syndicate.js",
+ "build-compiler-debug": "browserify -t brfs compiler/inbrowser.js -s SyndicateCompiler -o dist/syndicatecompiler.js",
+ "build-compiler": "browserify -t brfs compiler/inbrowser.js -s SyndicateCompiler -o dist/_syndicatecompiler.js && uglifyjs dist/_syndicatecompiler.js -o dist/syndicatecompiler.min.js && rm dist/_syndicatecompiler.js",
+ "build": "npm run build-debug && npm run build-compiler-debug && npm run build-min && npm run build-compiler",
+ "watch": "watchify src/main.js -d -s Syndicate -o dist/syndicate.js",
+ "test": "mocha",
+ "prepublish": "npm run build"
+ },
+ "author": "Tony Garnock-Jones ",
+ "devDependencies": {
+ "watchify": "^3.7.0",
+ "uglify-js": "^2.6.1",
+ "browserify": "^13.0.0",
+ "mocha": "^2.4.5",
+ "expect.js": "^0.3.1",
+ "immutable": "^3.7.6",
+ "brfs": "^1.4.3",
+ "ohm-js": "cdglabs/ohm"
+ }
+}
diff --git a/js/src/ack.js b/js/src/ack.js
new file mode 100644
index 0000000..45e22fe
--- /dev/null
+++ b/js/src/ack.js
@@ -0,0 +1,41 @@
+// Utility protocol for measuring when a stateChange takes effect.
+
+var RandomID = require('./randomid.js');
+var Network = require('./network.js').Network;
+var Route = require('./route.js');
+var Patch = require('./patch.js');
+
+var $Ack = new Route.$Special('ack');
+
+function Ack(metaLevel, id) {
+ this.metaLevel = metaLevel || 0;
+ this.id = id || RandomID.randomId(16);
+ this.done = false;
+}
+
+Ack.prototype.arm = function () {
+ Network.stateChange(Patch.sub([$Ack, this.id], this.metaLevel));
+ Network.send([$Ack, this.id], this.metaLevel);
+};
+
+Ack.prototype.disarm = function () {
+ Network.stateChange(Patch.unsub([$Ack, this.id], this.metaLevel));
+};
+
+Ack.prototype.check = function (e) {
+ if (!this.done) {
+ if (e.type === 'message') {
+ var m = Patch.stripAtMeta(e.message, this.metaLevel);
+ if (m && m[0] === $Ack && m[1] === this.id) {
+ this.disarm();
+ this.done = true;
+ }
+ }
+ }
+ return this.done;
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.$Ack = $Ack;
+module.exports.Ack = Ack;
diff --git a/js/src/actor.js b/js/src/actor.js
new file mode 100644
index 0000000..3fa192f
--- /dev/null
+++ b/js/src/actor.js
@@ -0,0 +1,187 @@
+'use strict';
+
+var Immutable = require('immutable');
+var Network = require('./network.js').Network;
+var Mux = require('./mux.js');
+var Patch = require('./patch.js');
+var Route = require('./route.js');
+var Util = require('./util.js');
+
+//---------------------------------------------------------------------------
+
+function spawnActor(state, bootFn) {
+ Network.spawn(new Actor(state, bootFn));
+}
+
+function Actor(state, bootFn) {
+ this.state = state;
+ this.facets = Immutable.Set();
+ this.mux = new Mux.Mux();
+
+ this.boot = function() {
+ bootFn.call(this.state);
+ this.checkForTermination();
+ };
+}
+
+Actor.prototype.handleEvent = function(e) {
+ this.facets.forEach(function (f) {
+ f.handleEvent(e);
+ });
+ this.checkForTermination();
+};
+
+Actor.prototype.addFacet = function(facet) {
+ this.facets = this.facets.add(facet);
+};
+
+Actor.prototype.removeFacet = function(facet) {
+ this.facets = this.facets.remove(facet);
+};
+
+Actor.prototype.checkForTermination = function() {
+ if (this.facets.isEmpty()) {
+ Network.exit();
+ }
+};
+
+//---------------------------------------------------------------------------
+
+function createFacet() {
+ return new Facet(Network.activeBehavior());
+}
+
+function Facet(actor) {
+ this.actor = actor;
+ this.endpoints = Immutable.Map();
+ this.initBlocks = Immutable.List();
+ this.doneBlocks = Immutable.List();
+}
+
+Facet.prototype.handleEvent = function(e) {
+ var facet = this;
+ this.endpoints.forEach(function(endpoint) {
+ endpoint.handlerFn.call(facet.actor.state, e);
+ });
+ this.refresh();
+};
+
+Facet.prototype.addAssertion = function(assertionFn) {
+ return this.addEndpoint(new Endpoint(assertionFn, function(e) {}));
+};
+
+Facet.prototype.onEvent = function(isTerminal, eventType, subscriptionFn, projectionFn, handlerFn) {
+ var facet = this;
+ switch (eventType) {
+
+ case 'message':
+ return this.addEndpoint(new Endpoint(subscriptionFn, function(e) {
+ if (e.type === 'message') {
+ var proj = projectionFn.call(facet.actor.state);
+ var spec = Patch.prependAtMeta(proj.assertion, proj.metalevel);
+ var match = Route.matchPattern(e.message, spec);
+ // console.log(match);
+ if (match) {
+ if (isTerminal) { facet.terminate(); }
+ Util.kwApply(handlerFn, facet.actor.state, match);
+ }
+ }
+ }));
+
+ case 'asserted': /* fall through */
+ case 'retracted':
+ return this.addEndpoint(new Endpoint(subscriptionFn, function(e) {
+ if (e.type === 'stateChange') {
+ var proj = projectionFn.call(facet.actor.state);
+ var spec = Patch.prependAtMeta(proj.assertion, proj.metalevel);
+ var compiledSpec = Route.compileProjection(spec);
+ var objects = Route.projectObjects(eventType === 'asserted'
+ ? e.patch.added
+ : e.patch.removed,
+ compiledSpec);
+ if (objects && objects.size > 0) {
+ // console.log(objects.toArray());
+ if (isTerminal) { facet.terminate(); }
+ objects.forEach(function (o) { Util.kwApply(handlerFn, facet.actor.state, o); });
+ }
+ }
+ }));
+
+ case 'risingEdge':
+ var endpoint = new Endpoint(function() { return Patch.emptyPatch; },
+ function(e) {
+ var newValue = subscriptionFn.call(facet.actor.state);
+ if (newValue && !this.currentValue) {
+ if (isTerminal) { facet.terminate(); }
+ handlerFn.call(facet.actor.state);
+ }
+ this.currentValue = newValue;
+ });
+ endpoint.currentValue = false;
+ return this.addEndpoint(endpoint);
+
+ default:
+ throw new Error("Unsupported Facet eventType: " + eventType);
+ }
+};
+
+Facet.prototype.addEndpoint = function(endpoint) {
+ var patch = endpoint.subscriptionFn.call(this.actor.state);
+ var r = this.actor.mux.addStream(patch);
+ this.endpoints = this.endpoints.set(r.pid, endpoint);
+ Network.stateChange(r.deltaAggregate);
+ return this; // for chaining
+};
+
+Facet.prototype.addInitBlock = function(thunk) {
+ this.initBlocks = this.initBlocks.push(thunk);
+ return this;
+};
+
+Facet.prototype.addDoneBlock = function(thunk) {
+ this.doneBlocks = this.doneBlocks.push(thunk);
+ return this;
+};
+
+Facet.prototype.refresh = function() {
+ var facet = this;
+ var aggregate = Patch.emptyPatch;
+ this.endpoints.forEach(function(endpoint, eid) {
+ var patch =
+ Patch.retract(Syndicate.__).andThen(endpoint.subscriptionFn.call(facet.actor.state));
+ var r = facet.actor.mux.updateStream(eid, patch);
+ aggregate = aggregate.andThen(r.deltaAggregate);
+ });
+ Network.stateChange(aggregate);
+};
+
+Facet.prototype.completeBuild = function() {
+ var facet = this;
+ this.actor.addFacet(this);
+ this.initBlocks.forEach(function(b) { b.call(facet.actor.state); });
+};
+
+Facet.prototype.terminate = function() {
+ var facet = this;
+ var aggregate = Patch.emptyPatch;
+ this.endpoints.forEach(function(endpoint, eid) {
+ var r = facet.actor.mux.removeStream(eid);
+ aggregate = aggregate.andThen(r.deltaAggregate);
+ });
+ Network.stateChange(aggregate);
+ this.endpoints = Immutable.Map();
+ this.actor.removeFacet(this);
+ this.doneBlocks.forEach(function(b) { b.call(facet.actor.state); });
+};
+
+//---------------------------------------------------------------------------
+
+function Endpoint(subscriptionFn, handlerFn) {
+ this.subscriptionFn = subscriptionFn;
+ this.handlerFn = handlerFn;
+}
+
+//---------------------------------------------------------------------------
+
+module.exports.spawnActor = spawnActor;
+module.exports.createFacet = createFacet;
diff --git a/js/src/demand-matcher.js b/js/src/demand-matcher.js
new file mode 100644
index 0000000..d5bba33
--- /dev/null
+++ b/js/src/demand-matcher.js
@@ -0,0 +1,79 @@
+var Immutable = require('immutable');
+var Route = require('./route.js');
+var Patch = require('./patch.js');
+var Util = require('./util.js');
+
+function DemandMatcher(demandSpec, supplySpec, options) {
+ options = Util.extend({
+ metaLevel: 0,
+ onDemandIncrease: function (captures) {
+ console.error("Syndicate: Unhandled increase in demand", captures);
+ },
+ onSupplyDecrease: function (captures) {
+ console.error("Syndicate: Unhandled decrease in supply", captures);
+ }
+ }, options);
+ this.metaLevel = options.metaLevel;
+ this.onDemandIncrease = options.onDemandIncrease;
+ this.onSupplyDecrease = options.onSupplyDecrease;
+ this.demandSpec = demandSpec;
+ this.supplySpec = supplySpec;
+ this.demandPattern = Route.projectionToPattern(demandSpec);
+ this.supplyPattern = Route.projectionToPattern(supplySpec);
+ this.demandProjection = Route.compileProjection(Patch.prependAtMeta(demandSpec, this.metaLevel));
+ this.supplyProjection = Route.compileProjection(Patch.prependAtMeta(supplySpec, this.metaLevel));
+ this.currentDemand = Immutable.Set();
+ this.currentSupply = Immutable.Set();
+}
+
+DemandMatcher.prototype.boot = function () {
+ return Patch.sub(this.demandPattern, this.metaLevel)
+ .andThen(Patch.sub(this.supplyPattern, this.metaLevel));
+};
+
+DemandMatcher.prototype.handleEvent = function (e) {
+ if (e.type === "stateChange") {
+ this.handlePatch(e.patch);
+ }
+};
+
+DemandMatcher.prototype.handlePatch = function (p) {
+ var self = this;
+
+ var addedDemand = Route.trieKeys(Route.project(p.added, self.demandProjection));
+ var removedDemand = Route.trieKeys(Route.project(p.removed, self.demandProjection));
+ var addedSupply = Route.trieKeys(Route.project(p.added, self.supplyProjection));
+ var removedSupply = Route.trieKeys(Route.project(p.removed, self.supplyProjection));
+
+ if (addedDemand === null) {
+ throw new Error("Syndicate: wildcard demand detected:\n" +
+ self.demandSpec + "\n" +
+ p.pretty());
+ }
+ if (addedSupply === null) {
+ throw new Error("Syndicate: wildcard supply detected:\n" +
+ self.supplySpec + "\n" +
+ p.pretty());
+ }
+
+ self.currentSupply = self.currentSupply.union(addedSupply);
+ self.currentDemand = self.currentDemand.subtract(removedDemand);
+
+ removedSupply.forEach(function (captures) {
+ if (self.currentDemand.has(captures)) {
+ self.onSupplyDecrease(Route.captureToObject(captures, self.supplyProjection));
+ }
+ });
+ addedDemand.forEach(function (captures) {
+ if (!self.currentSupply.has(captures)) {
+ self.onDemandIncrease(Route.captureToObject(captures, self.demandProjection));
+ }
+ });
+
+ self.currentSupply = self.currentSupply.subtract(removedSupply);
+ self.currentDemand = self.currentDemand.union(addedDemand);
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.DemandMatcher = DemandMatcher;
diff --git a/js/src/dom-driver.js b/js/src/dom-driver.js
new file mode 100644
index 0000000..11d63a4
--- /dev/null
+++ b/js/src/dom-driver.js
@@ -0,0 +1,141 @@
+// DOM fragment display driver
+var Patch = require("./patch.js");
+var DemandMatcher = require('./demand-matcher.js').DemandMatcher;
+var Ack = require('./ack.js').Ack;
+var Seal = require('./seal.js').Seal;
+
+var Network_ = require("./network.js");
+var Network = Network_.Network;
+var __ = Network_.__;
+var _$ = Network_._$;
+
+function spawnDOMDriver(domWrapFunction, jQueryWrapFunction) {
+ domWrapFunction = domWrapFunction || defaultWrapFunction;
+ var spec = domWrapFunction(_$('selector'), _$('fragmentClass'), _$('fragmentSpec'));
+ Network.spawn(
+ new DemandMatcher(spec,
+ Patch.advertise(spec),
+ {
+ onDemandIncrease: function (c) {
+ Network.spawn(new DOMFragment(c.selector,
+ c.fragmentClass,
+ c.fragmentSpec,
+ domWrapFunction,
+ jQueryWrapFunction));
+ }
+ }));
+}
+
+function defaultWrapFunction(selector, fragmentClass, fragmentSpec) {
+ return ["DOM", selector, fragmentClass, fragmentSpec];
+}
+
+function DOMFragment(selector, fragmentClass, fragmentSpec, domWrapFunction, jQueryWrapFunction) {
+ this.selector = selector;
+ this.fragmentClass = fragmentClass;
+ this.fragmentSpec = fragmentSpec;
+ this.domWrapFunction = domWrapFunction;
+ this.jQueryWrapFunction = jQueryWrapFunction;
+ this.demandExists = false;
+ this.subscriptionEstablished = new Ack();
+ this.nodes = this.buildNodes();
+}
+
+DOMFragment.prototype.boot = function () {
+ var self = this;
+ var specification = self.domWrapFunction(self.selector, self.fragmentClass, self.fragmentSpec);
+
+ Network.spawn(new Network(function () {
+ Syndicate.JQuery.spawnJQueryDriver(self.selector+" > ."+self.fragmentClass,
+ 1,
+ self.jQueryWrapFunction);
+ Network.spawn({
+ demandExists: false,
+ subscriptionEstablished: new Ack(1),
+ boot: function () {
+ this.subscriptionEstablished.arm();
+ return Patch.sub(Patch.advertise(specification), 1);
+ },
+ handleEvent: function (e) {
+ this.subscriptionEstablished.check(e);
+ if (e.type === "stateChange") {
+ if (e.patch.hasAdded()) this.demandExists = true;
+ if (e.patch.hasRemoved()) this.demandExists = false;
+ }
+ if (this.subscriptionEstablished.done && !this.demandExists) {
+ Network.exitNetwork();
+ }
+ }
+ });
+ }));
+
+ this.subscriptionEstablished.arm();
+ return Patch.sub(specification).andThen(Patch.pub(specification));
+};
+
+DOMFragment.prototype.handleEvent = function (e) {
+ this.subscriptionEstablished.check(e);
+ if (e.type === "stateChange") {
+ if (e.patch.hasAdded()) this.demandExists = true;
+ if (e.patch.hasRemoved()) this.demandExists = false;
+ }
+ if (this.subscriptionEstablished.done && !this.demandExists) {
+ for (var i = 0; i < this.nodes.length; i++) {
+ var n = this.nodes[i];
+ n.parentNode.removeChild(n);
+ }
+ Network.exit();
+ }
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+function isAttributes(x) {
+ return Array.isArray(x) && ((x.length === 0) || Array.isArray(x[0]));
+}
+
+DOMFragment.prototype.interpretSpec = function (spec) {
+ // Fragment specs are roughly JSON-equivalents of SXML.
+ // spec ::== ["tag", [["attr", "value"], ...], spec, spec, ...]
+ // | ["tag", spec, spec, ...]
+ // | "cdata"
+ if (typeof(spec) === "string" || typeof(spec) === "number") {
+ return document.createTextNode(spec);
+ } else if ($.isArray(spec)) {
+ var tagName = spec[0];
+ var hasAttrs = isAttributes(spec[1]);
+ var attrs = hasAttrs ? spec[1] : {};
+ var kidIndex = hasAttrs ? 2 : 1;
+
+ // Wow! Such XSS! Many hacks! So vulnerability! Amaze!
+ var n = document.createElement(tagName);
+ for (var i = 0; i < attrs.length; i++) {
+ n.setAttribute(attrs[i][0], attrs[i][1]);
+ }
+ for (var i = kidIndex; i < spec.length; i++) {
+ n.appendChild(this.interpretSpec(spec[i]));
+ }
+ return n;
+ } else {
+ throw new Error("Ill-formed DOM specification");
+ }
+};
+
+DOMFragment.prototype.buildNodes = function () {
+ var self = this;
+ var nodes = [];
+ $(self.selector).each(function (index, domNode) {
+ var n = self.interpretSpec(self.fragmentSpec.sealContents);
+ if ('classList' in n) {
+ n.classList.add(self.fragmentClass);
+ }
+ domNode.appendChild(n);
+ nodes.push(n);
+ });
+ return nodes;
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.spawnDOMDriver = spawnDOMDriver;
+module.exports.defaultWrapFunction = defaultWrapFunction;
diff --git a/js/src/ground.js b/js/src/ground.js
new file mode 100644
index 0000000..a6ea0a9
--- /dev/null
+++ b/js/src/ground.js
@@ -0,0 +1,79 @@
+"use strict";
+
+var Immutable = require('immutable');
+var Network = require('./network.js').Network;
+
+function Ground(bootFn) {
+ var self = this;
+ this.stepperId = null;
+ this.baseStack = Immutable.List.of({ network: this, activePid: -1 });
+ Network.withNetworkStack(this.baseStack, function () {
+ self.network = new Network(bootFn);
+ });
+}
+
+Ground.prototype.step = function () {
+ var self = this;
+ return Network.withNetworkStack(this.baseStack, function () {
+ return self.network.step();
+ });
+};
+
+Ground.prototype.checkPid = function (pid) {
+ if (pid !== -1) console.error('Weird pid in Ground', pid);
+};
+
+Ground.prototype.markRunnable = function (pid) {
+ this.checkPid(pid);
+ this.startStepping();
+};
+
+Ground.prototype.startStepping = function () {
+ var self = this;
+ if (this.stepperId) return;
+ if (this.step()) {
+ this.stepperId = setTimeout(function () {
+ self.stepperId = null;
+ self.startStepping();
+ }, 0);
+ }
+ return this; // because the syndicatec compiler chains startStepping after the ctor
+};
+
+Ground.prototype.stopStepping = function () {
+ if (this.stepperId) {
+ clearTimeout(this.stepperId);
+ this.stepperId = null;
+ }
+};
+
+Ground.prototype.kill = function (pid, exn) {
+ this.checkPid(pid);
+ console.log("Ground network terminated");
+ this.stopStepping();
+};
+
+Ground.prototype.enqueueAction = function (pid, action) {
+ this.checkPid(pid);
+
+ switch (action.type) {
+ case 'stateChange':
+ if (action.patch.isNonEmpty()) {
+ console.error('You have subscribed to a nonexistent event source.',
+ action.patch.pretty());
+ }
+ break;
+
+ case 'message':
+ console.error('You have sent a message into the outer void.', action);
+ break;
+
+ default:
+ console.error('Internal error: unexpected action at ground level', action);
+ break;
+ }
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.Ground = Ground;
diff --git a/js/src/jquery-driver.js b/js/src/jquery-driver.js
new file mode 100644
index 0000000..c3c77a5
--- /dev/null
+++ b/js/src/jquery-driver.js
@@ -0,0 +1,91 @@
+// JQuery event driver
+var Patch = require("./patch.js");
+var DemandMatcher = require('./demand-matcher.js').DemandMatcher;
+
+var Network_ = require("./network.js");
+var Network = Network_.Network;
+var __ = Network_.__;
+var _$ = Network_._$;
+
+function spawnJQueryDriver(baseSelector, metaLevel, wrapFunction) {
+ metaLevel = metaLevel || 0;
+ wrapFunction = wrapFunction || defaultWrapFunction;
+ Network.spawn(
+ new DemandMatcher(Patch.observe(wrapFunction(_$('selector'), _$('eventName'), __)),
+ Patch.advertise(wrapFunction(_$('selector'), _$('eventName'), __)),
+ {
+ metaLevel: metaLevel,
+ onDemandIncrease: function (c) {
+ Network.spawn(new JQueryEventRouter(baseSelector,
+ c.selector,
+ c.eventName,
+ metaLevel,
+ wrapFunction));
+ }
+ }));
+}
+
+function defaultWrapFunction(selector, eventName, eventValue) {
+ return ["jQuery", selector, eventName, eventValue];
+}
+
+function JQueryEventRouter(baseSelector, selector, eventName, metaLevel, wrapFunction) {
+ var self = this;
+ this.baseSelector = baseSelector || null;
+ this.selector = selector;
+ this.eventName = eventName;
+ this.metaLevel = metaLevel || 0;
+ this.wrapFunction = wrapFunction || defaultWrapFunction;
+ this.preventDefault = (this.eventName.charAt(0) !== "+");
+ this.handler =
+ Network.wrap(function (e) {
+ Network.send(self.wrapFunction(self.selector, self.eventName, e), self.metaLevel);
+ if (self.preventDefault) e.preventDefault();
+ return !self.preventDefault;
+ });
+ this.computeNodes().on(this.preventDefault ? this.eventName : this.eventName.substring(1),
+ this.handler);
+}
+
+JQueryEventRouter.prototype.boot = function () {
+ return Patch.pub(this.wrapFunction(this.selector, this.eventName, __), this.metaLevel)
+ .andThen(Patch.sub(Patch.observe(this.wrapFunction(this.selector, this.eventName, __)),
+ this.metaLevel));
+};
+
+JQueryEventRouter.prototype.handleEvent = function (e) {
+ if (e.type === "stateChange" && e.patch.hasRemoved()) {
+ this.computeNodes().off(this.eventName, this.handler);
+ Network.exit();
+ }
+};
+
+JQueryEventRouter.prototype.computeNodes = function () {
+ if (this.baseSelector) {
+ return $(this.baseSelector).children(this.selector).addBack(this.selector);
+ } else {
+ return $(this.selector);
+ }
+};
+
+function simplifyDOMEvent(e) {
+ var keys = [];
+ for (var k in e) {
+ var v = e[k];
+ if (typeof v === 'object') continue;
+ if (typeof v === 'function') continue;
+ keys.push(k);
+ }
+ keys.sort();
+ var simplified = [];
+ for (var i = 0; i < keys.length; i++) {
+ simplified.push([keys[i], e[keys[i]]]);
+ }
+ return simplified;
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.spawnJQueryDriver = spawnJQueryDriver;
+module.exports.simplifyDOMEvent = simplifyDOMEvent;
+module.exports.defaultWrapFunction = defaultWrapFunction;
diff --git a/js/src/main.js b/js/src/main.js
new file mode 100644
index 0000000..8e383a1
--- /dev/null
+++ b/js/src/main.js
@@ -0,0 +1,51 @@
+"use strict";
+
+function copyKeys(keys, to, from) {
+ for (var i = 0; i < keys.length; i++) {
+ to[keys[i]] = from[keys[i]];
+ }
+}
+
+module.exports = require("./network.js");
+
+module.exports.Route = require("./route.js");
+copyKeys(['__', '_$', '$Capture', '$Special',
+ 'is_emptyTrie', 'emptyTrie',
+ 'embeddedTrie', 'compilePattern',
+ 'compileProjection', 'project', 'projectObjects',
+ 'prettyTrie'],
+ module.exports,
+ module.exports.Route);
+
+var Seal = require('./seal.js')
+copyKeys(['Seal', 'seal'],
+ module.exports,
+ Seal);
+
+module.exports.DemandMatcher = require('./demand-matcher.js').DemandMatcher;
+module.exports.Ack = require('./ack.js').Ack;
+
+module.exports.RandomID = require('./randomid.js');
+module.exports.DOM = require("./dom-driver.js");
+module.exports.JQuery = require("./jquery-driver.js");
+// module.exports.RoutingTableWidget = require("./routing-table-widget.js");
+// module.exports.WebSocket = require("./websocket-driver.js");
+module.exports.Reflect = require("./reflect.js");
+
+module.exports.Patch = require("./patch.js");
+copyKeys(['emptyPatch',
+ 'observe', 'atMeta', 'advertise',
+ 'isObserve', 'isAtMeta', 'isAdvertise',
+ 'assert', 'retract', 'sub', 'unsub', 'pub', 'unpub',
+ 'patchSeq'],
+ module.exports,
+ module.exports.Patch);
+
+module.exports.Ground = require("./ground.js").Ground;
+module.exports.Actor = require("./actor.js");
+// module.exports.Spy = require("./spy.js").Spy;
+// module.exports.WakeDetector = require("./wake-detector.js").WakeDetector;
+
+// var Worker = require("./worker.js");
+// module.exports.Worker = Worker.Worker;
+// module.exports.WorkerGround = Worker.WorkerGround;
diff --git a/js/src/mux.js b/js/src/mux.js
new file mode 100644
index 0000000..70c274c
--- /dev/null
+++ b/js/src/mux.js
@@ -0,0 +1,123 @@
+"use strict";
+
+var Immutable = require('immutable');
+var Route = require('./route.js');
+var Patch = require('./patch.js');
+
+function Mux(nextPid, routingTable, interestTable) {
+ this.nextPid = nextPid || 0;
+ this.routingTable = routingTable || Route.emptyTrie;
+ this.interestTable = interestTable || Immutable.Map(); // pid -> Trie
+}
+
+Mux.prototype.shallowCopy = function () {
+ return new Mux(this.nextPid, this.routingTable, this.interestTable);
+};
+
+Mux.prototype.addStream = function (initialPatch) {
+ var newPid = this.nextPid++;
+ return this.updateStream(newPid, initialPatch);
+};
+
+Mux.prototype.removeStream = function (pid) {
+ return this.updateStream(pid, Patch.removeEverythingPatch);
+};
+
+Mux.prototype.updateStream = function (pid, unclampedPatch) {
+ var oldInterests = this.interestsOf(pid);
+ var oldRoutingTable = this.routingTable;
+ var delta = unclampedPatch.label(Immutable.Set.of(pid)).limit(oldInterests);
+ var deltaAggregate = delta.computeAggregate(pid, oldRoutingTable);
+ var newInterests = delta.applyTo(oldInterests);
+ var newRoutingTable = delta.applyTo(oldRoutingTable);
+
+ this.routingTable = newRoutingTable;
+
+ if (Route.is_emptyTrie(newInterests)) {
+ this.interestTable = this.interestTable.remove(pid);
+ } else {
+ this.interestTable = this.interestTable.set(pid, newInterests);
+ }
+
+ return { pid: pid,
+ delta: delta,
+ deltaAggregate: deltaAggregate };
+};
+
+var atMetaEverything = Route.compilePattern(true, Patch.atMeta(Route.__));
+var atMetaBranchKeys = Immutable.List([Route.SOA, Patch.$AtMeta]);
+var onlyMeta = Immutable.Set.of("meta");
+
+function echoCancelledTrie(t) {
+ return Route.subtract(t, atMetaEverything, function (v1, v2) {
+ return v1.has("meta") ? onlyMeta : null;
+ });
+}
+
+function computeEvents(oldMux, newMux, updateStreamResult) {
+ var actingPid = updateStreamResult.pid;
+ var delta = updateStreamResult.delta;
+ var deltaAggregate = updateStreamResult.deltaAggregate;
+ var deltaAggregateNoEcho = (actingPid === "meta")
+ ? delta // because echo-cancellation means that meta-SCNs are always new information
+ : new Patch.Patch(Route.triePruneBranch(deltaAggregate.added, atMetaBranchKeys),
+ Route.triePruneBranch(deltaAggregate.removed, atMetaBranchKeys));
+ var oldRoutingTable = oldMux.routingTable;
+ var newRoutingTable = newMux.routingTable;
+ var affectedPids =
+ computeAffectedPids(oldRoutingTable, deltaAggregateNoEcho).add(actingPid).remove("meta");
+ return {
+ eventMap: Immutable.Map().withMutations(function (result) {
+ affectedPids.forEach(function (pid) {
+ var patchForPid;
+ if (pid === actingPid) {
+ var part1 = new Patch.Patch(
+ echoCancelledTrie(Patch.biasedIntersection(newRoutingTable, delta.added)),
+ echoCancelledTrie(Patch.biasedIntersection(oldRoutingTable, delta.removed)));
+ var part2 = new Patch.Patch(Patch.biasedIntersection(deltaAggregateNoEcho.added,
+ newMux.interestsOf(pid)),
+ Patch.biasedIntersection(deltaAggregateNoEcho.removed,
+ oldMux.interestsOf(pid)));
+ patchForPid = part1.unsafeUnion(part2);
+ } else {
+ patchForPid = deltaAggregateNoEcho.viewFrom(oldMux.interestsOf(pid));
+ }
+ if (patchForPid.isNonEmpty()) {
+ result.set(pid, patchForPid);
+ }
+ });
+ }),
+ metaEvents: (actingPid === "meta")
+ ? Immutable.List()
+ : Immutable.List.of(delta.computeAggregate(actingPid, oldRoutingTable, true).drop())
+ };
+}
+
+function computeAffectedPids(routingTable, delta) {
+ var cover = Route._union(delta.added, delta.removed);
+ routingTable = Route.trieStep(routingTable, Route.SOA);
+ routingTable = Route.trieStep(routingTable, Patch.$Observe);
+ return Route.matchTrie(cover, routingTable, Immutable.Set(),
+ function (v, r, acc) {
+ return acc.union(Route.trieStep(r, Route.EOA).value);
+ });
+}
+
+Mux.prototype.routeMessage = function (body) {
+ if (Route.matchValue(this.routingTable, body) === null) {
+ return Route.matchValue(this.routingTable, Patch.observe(body)) || Immutable.Set();
+ } else {
+ // Some other stream has declared body
+ return Immutable.Set();
+ }
+};
+
+Mux.prototype.interestsOf = function (pid) {
+ return this.interestTable.get(pid, Route.emptyTrie);
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.Mux = Mux;
+module.exports.computeEvents = computeEvents;
+module.exports.computeAffectedPids = computeAffectedPids;
diff --git a/js/src/network.js b/js/src/network.js
new file mode 100644
index 0000000..151e54d
--- /dev/null
+++ b/js/src/network.js
@@ -0,0 +1,299 @@
+"use strict";
+
+var Immutable = require('immutable');
+var Route = require('./route.js');
+var Patch = require('./patch.js');
+var Mux = require('./mux.js');
+
+/*---------------------------------------------------------------------------*/
+/* Events and Actions */
+
+function stateChange(patch) {
+ return { type: 'stateChange', patch: patch };
+}
+
+function message(body) {
+ return { type: 'message', message: body };
+}
+
+function spawn(behavior) {
+ return { type: 'spawn', behavior: behavior };
+}
+
+function terminate() {
+ return { type: 'terminate' };
+}
+
+function terminateNetwork() {
+ return { type: 'terminateNetwork' };
+}
+
+/*---------------------------------------------------------------------------*/
+/* Network */
+
+function Network(bootFn) {
+ this.pendingActions = Immutable.List(); // of [pid, Action]
+ this.processTable = Immutable.Map(); // pid -> Behavior
+ this.runnablePids = Immutable.Set(); // of pid
+ this.mux = new Mux.Mux();
+ this.onStateChange = function (mux, deltaAggregate) {};
+ this.asChild('meta', function () { return bootFn() }, true);
+}
+
+// Class state and methods
+
+Network.stack = Immutable.List();
+
+Network.current = function () {
+ return Network.stack.last().network;
+};
+
+Network.activePid = function () {
+ return Network.stack.last().activePid;
+};
+
+Network.activeBehavior = function () {
+ var entry = Network.stack.last();
+ var p = entry.network.processTable.get(entry.activePid);
+ return p ? p.behavior : null;
+};
+
+Network.withNetworkStack = function (stack, f) {
+ var oldStack = Network.stack;
+ Network.stack = stack;
+ var result;
+ try {
+ result = f();
+ } catch (e) {
+ Network.stack = oldStack;
+ throw e;
+ }
+ Network.stack = oldStack;
+ return result;
+};
+
+Network.wrap = function (f) {
+ var savedStack = Network.stack;
+ return function () {
+ var actuals = arguments;
+ return Network.withNetworkStack(savedStack, function () {
+ var result = Network.current().asChild(Network.activePid(), function () {
+ return f.apply(null, actuals);
+ });
+ Network.stack.reverse().forEach(function (entry) {
+ entry.network.markRunnable(entry.activePid);
+ });
+ return result;
+ });
+ };
+};
+
+Network.enqueueAction = function (action) {
+ var entry = Network.stack.last();
+ entry.network.enqueueAction(entry.activePid, action);
+};
+
+Network.send = function (body, metaLevel) {
+ Network.enqueueAction(message(Patch.prependAtMeta(body, metaLevel || 0)));
+};
+
+Network.stateChange = function (patch) {
+ Network.enqueueAction(stateChange(patch));
+};
+
+Network.spawn = function (behavior) {
+ Network.enqueueAction(spawn(behavior));
+};
+
+Network.exit = function (exn) {
+ Network.current().kill(Network.activePid(), exn);
+};
+
+Network.exitNetwork = function () {
+ Network.enqueueAction(terminateNetwork());
+};
+
+Network.inertBehavior = {
+ handleEvent: function (e) {}
+};
+
+// Instance methods
+
+Network.prototype.asChild = function (pid, f, omitLivenessCheck) {
+ var self = this;
+ var p = this.processTable.get(pid, null);
+ if (!omitLivenessCheck && (p === null)) {
+ console.warn("Network.asChild eliding invocation of dead process", pid);
+ return;
+ }
+
+ return Network.withNetworkStack(
+ Network.stack.push({ network: this, activePid: pid }),
+ function () {
+ try {
+ return f(p);
+ } catch (e) {
+ self.kill(pid, e);
+ }
+ });
+};
+
+Network.prototype.kill = function (pid, exn) {
+ if (exn && exn.stack) {
+ console.log("Process exiting", pid, exn, exn.stack);
+ } else {
+ console.log("Process exiting", pid, exn);
+ }
+ var p = this.processTable.get(pid);
+ this.processTable = this.processTable.set(pid, { behavior: Network.inertBehavior });
+ if (p) {
+ if (p.behavior.trapexit) {
+ this.asChild(pid, function () { return p.behavior.trapexit(exn); }, true);
+ }
+ this.enqueueAction(pid, terminate());
+ }
+};
+
+Network.prototype.boot = function () {
+ // Needed in order for a new Network to be marked as "runnable", so
+ // its initial actions get performed.
+};
+
+Network.prototype.handleEvent = function (e) {
+ switch (e.type) {
+ case 'stateChange':
+ this.enqueueAction('meta', stateChange(e.patch.lift()));
+ break;
+ case 'message':
+ this.enqueueAction('meta', message(Patch.atMeta(e.message)));
+ break;
+ default:
+ var exn = new Error("Event type " + e.type + " not understood");
+ exn.event = e;
+ throw exn;
+ }
+ return true;
+};
+
+Network.prototype.step = function () {
+ return this.dispatchActions()
+ && this.runRunnablePids()
+ && ((this.pendingActions.size > 0) || (this.runnablePids.size > 0));
+};
+
+Network.prototype.enqueueAction = function (pid, action) {
+ this.pendingActions = this.pendingActions.push([pid, action]);
+};
+
+Network.prototype.dispatchActions = function () {
+ var self = this;
+ var actionQueue = this.pendingActions;
+ this.pendingActions = Immutable.List();
+ var alive = true;
+ actionQueue.forEach(function (entry) {
+ var pid = entry[0];
+ var action = entry[1];
+ if (!self.interpretAction(pid, action)) {
+ alive = false;
+ return false;
+ }
+ });
+ return alive;
+};
+
+Network.prototype.markRunnable = function (pid) {
+ this.runnablePids = this.runnablePids.add(pid);
+};
+
+Network.prototype.runRunnablePids = function () {
+ var self = this;
+ var pidSet = this.runnablePids;
+ this.runnablePids = Immutable.Set();
+ pidSet.forEach(function (pid) {
+ var childBusy = self.asChild(pid, function (p) {
+ return p.behavior.step // exists, haven't called it yet
+ && p.behavior.step();
+ });
+ if (childBusy) self.markRunnable(pid);
+ });
+ return true;
+};
+
+Network.prototype.interpretAction = function (pid, action) {
+ var self = this;
+
+ switch (action.type) {
+ case 'stateChange':
+ var oldMux = this.mux.shallowCopy();
+ this.deliverPatches(oldMux, this.mux.updateStream(pid, action.patch));
+ return true;
+
+ case 'message':
+ if (Patch.isObserve(action.message)) {
+ console.warn('Process ' + pid + ' send message containing query', action.message);
+ }
+ if (pid !== 'meta' && Patch.isAtMeta(action.message)) {
+ Network.send(action.message[1]);
+ } else {
+ this.mux.routeMessage(action.message).forEach(function (pid) {
+ self.deliverEvent(pid, action);
+ });
+ }
+ return true;
+
+ case 'spawn':
+ var oldMux = this.mux.shallowCopy();
+ var p = { behavior: action.behavior };
+ var pid = this.mux.nextPid;
+ this.processTable = this.processTable.set(pid, p);
+ var initialPatch = Patch.emptyPatch;
+ if (p.behavior.boot) {
+ initialPatch = this.asChild(pid, function () { return p.behavior.boot() });
+ initialPatch = initialPatch || Patch.emptyPatch;
+ this.markRunnable(pid);
+ }
+ this.deliverPatches(oldMux, this.mux.addStream(initialPatch));
+ return true;
+
+ case 'terminate':
+ var oldMux = this.mux.shallowCopy();
+ this.deliverPatches(oldMux, this.mux.removeStream(pid));
+ console.log("Process exit complete", pid);
+ this.processTable = this.processTable.remove(pid);
+ return true;
+
+ case 'terminateNetwork':
+ Network.exit();
+ return false;
+
+ default:
+ var exn = new Error("Action type " + action.type + " not understood");
+ exn.action = action;
+ throw exn;
+ }
+};
+
+Network.prototype.deliverPatches = function (oldMux, updateStreamResult) {
+ var self = this;
+ var events = Mux.computeEvents(oldMux, this.mux, updateStreamResult);
+ events.eventMap.forEach(function (patch, pid) {
+ self.deliverEvent(pid, stateChange(patch));
+ });
+ events.metaEvents.forEach(Network.stateChange);
+ this.onStateChange(this.mux, updateStreamResult.deltaAggregate);
+};
+
+Network.prototype.deliverEvent = function (pid, event) {
+ var childBusy = this.asChild(pid, function (p) { return p.behavior.handleEvent(event); });
+ if (childBusy) this.markRunnable(pid);
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.stateChange = stateChange;
+module.exports.message = message;
+module.exports.spawn = spawn;
+module.exports.terminate = terminate;
+module.exports.terminateNetwork = terminateNetwork;
+
+module.exports.Network = Network;
diff --git a/js/src/patch.js b/js/src/patch.js
new file mode 100644
index 0000000..93ed59f
--- /dev/null
+++ b/js/src/patch.js
@@ -0,0 +1,265 @@
+"use strict";
+
+var Route = require("./route.js");
+var Immutable = require("immutable");
+
+var __ = Route.__;
+var _$ = Route._$;
+
+function Patch(added, removed) {
+ this.added = added;
+ this.removed = removed;
+}
+
+var emptyPatch = new Patch(Route.emptyTrie, Route.emptyTrie);
+var removeEverythingPatch = new Patch(Route.emptyTrie, Route.compilePattern(true, __));
+
+var $Observe = new Route.$Special("$Observe");
+var $AtMeta = new Route.$Special("$AtMeta");
+var $Advertise = new Route.$Special("$Advertise");
+
+function observe(p) { return [$Observe, p]; }
+function atMeta(p) { return [$AtMeta, p]; }
+function advertise(p) { return [$Advertise, p]; }
+
+function isObserve(p) { return p[0] === $Observe; }
+function isAtMeta(p) { return p[0] === $AtMeta; }
+function isAdvertise(p) { return p[0] === $Advertise; }
+
+function prependAtMeta(p, level) {
+ while (level--) {
+ p = atMeta(p);
+ }
+ return p;
+}
+
+function stripAtMeta(p, level) {
+ while (level--) {
+ if (p.length === 2 && p[0] === $AtMeta) {
+ p = p[1];
+ } else {
+ return null;
+ }
+ }
+ return p;
+}
+
+function observeAtMeta(p, level) {
+ if (level === 0) {
+ return Route.compilePattern(true, observe(p));
+ } else {
+ return Route._union(
+ Route.compilePattern(true, observe(prependAtMeta(p, level))),
+ Route.compilePattern(true, atMeta(Route.embeddedTrie(observeAtMeta(p, level - 1)))));
+ }
+}
+
+function _check(p) {
+ if (p instanceof Patch) {
+ throw new Error("Cannot construct patch pattern using an embedded patch");
+ }
+ return p;
+}
+
+function assert(p, metaLevel) {
+ return new Patch(Route.compilePattern(true, prependAtMeta(_check(p), metaLevel || 0)),
+ Route.emptyTrie);
+}
+
+function retract(p, metaLevel) {
+ return new Patch(Route.emptyTrie,
+ Route.compilePattern(true, prependAtMeta(_check(p), metaLevel || 0)));
+}
+
+function sub(p, metaLevel) {
+ return new Patch(observeAtMeta(_check(p), metaLevel || 0), Route.emptyTrie);
+}
+
+function unsub(p, metaLevel) {
+ return new Patch(Route.emptyTrie, observeAtMeta(_check(p), metaLevel || 0));
+}
+
+function pub(p, metaLevel) {
+ return assert(advertise(_check(p)), metaLevel);
+}
+
+function unpub(p, metaLevel) {
+ return retract(advertise(_check(p)), metaLevel);
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+Patch.prototype.equals = function (other) {
+ if (!(other instanceof Patch)) return false;
+ return Immutable.is(this.added, other.added) && Immutable.is(this.removed, other.removed);
+};
+
+Patch.prototype.isEmpty = function () {
+ return this.added === Route.emptyTrie && this.removed === Route.emptyTrie;
+};
+
+Patch.prototype.isNonEmpty = function () {
+ return !this.isEmpty();
+};
+
+Patch.prototype.hasAdded = function () {
+ return this.added !== Route.emptyTrie;
+};
+
+Patch.prototype.hasRemoved = function () {
+ return this.removed !== Route.emptyTrie;
+};
+
+Patch.prototype.lift = function () {
+ return new Patch(Route.compilePattern(true, atMeta(Route.embeddedTrie(this.added))),
+ Route.compilePattern(true, atMeta(Route.embeddedTrie(this.removed))));
+};
+
+var atMetaProj = Route.compileProjection(atMeta(_$));
+Patch.prototype.drop = function () {
+ return new Patch(Route.project(this.added, atMetaProj),
+ Route.project(this.removed, atMetaProj));
+};
+
+Patch.prototype.strip = function () {
+ return new Patch(Route.relabel(this.added, function (v) { return true; }),
+ Route.relabel(this.removed, function (v) { return true; }));
+};
+
+Patch.prototype.label = function (labelValue) {
+ return new Patch(Route.relabel(this.added, function (v) { return labelValue; }),
+ Route.relabel(this.removed, function (v) { return labelValue; }));
+};
+
+Patch.prototype.limit = function (bound) {
+ return new Patch(Route.subtract(this.added, bound, function (v1, v2) { return null; }),
+ Route.intersect(this.removed, bound, function (v1, v2) { return v1; }));
+};
+
+var metaLabelSet = Immutable.Set(["meta"]);
+Patch.prototype.computeAggregate = function (label, base, removeMeta /* optional flag */) {
+ return new Patch(Route.subtract(this.added, base, addCombiner),
+ Route.subtract(this.removed, base, removeCombiner));
+
+ function addCombiner(v1, v2) {
+ if (removeMeta && Immutable.is(v2, metaLabelSet)) {
+ return v1;
+ } else {
+ return null;
+ }
+ }
+
+ function removeCombiner(v1, v2) {
+ if (v2.size === 1) {
+ return v1;
+ } else {
+ if (removeMeta && v2.size === 2 && v2.has("meta")) {
+ return v1;
+ } else {
+ return null;
+ }
+ }
+ }
+};
+
+Patch.prototype.applyTo = function (base) {
+ return Route._union(Route.subtract(base, this.removed), this.added);
+};
+
+Patch.prototype.updateInterests = function (base) {
+ return Route._union(Route.subtract(base, this.removed, function (v1, v2) { return null; }),
+ this.added,
+ function (v1, v2) { return true; });
+};
+
+Patch.prototype.unapplyTo = function (base) {
+ return Route._union(Route.subtract(base, this.added), this.removed);
+};
+
+Patch.prototype.andThen = function (nextPatch) {
+ return new Patch(nextPatch.updateInterests(this.added),
+ Route._union(Route.subtract(this.removed,
+ nextPatch.added,
+ function (v1, v2) { return null; }),
+ nextPatch.removed,
+ function (v1, v2) { return true; }));
+};
+
+function patchSeq(/* patch, patch, ... */) {
+ var p = emptyPatch;
+ for (var i = 0; i < arguments.length; i++) {
+ p = p.andThen(arguments[i]);
+ }
+ return p;
+}
+
+function computePatch(oldBase, newBase) {
+ return new Patch(Route.subtract(newBase, oldBase),
+ Route.subtract(oldBase, newBase));
+}
+
+function biasedIntersection(object, subject) {
+ subject = Route.trieStep(subject, Route.SOA);
+ subject = Route.trieStep(subject, $Observe);
+ return Route.intersect(object, subject,
+ function (v1, v2) { return true; },
+ function (v, r) { return Route.trieStep(r, Route.EOA); });
+}
+
+Patch.prototype.viewFrom = function (interests) {
+ return new Patch(biasedIntersection(this.added, interests),
+ biasedIntersection(this.removed, interests));
+};
+
+Patch.prototype.unsafeUnion = function (other) {
+ // Unsafe because does not necessarily preserve invariant that added
+ // and removed are disjoint.
+ return new Patch(Route._union(this.added, other.added),
+ Route._union(this.removed, other.removed));
+};
+
+Patch.prototype.project = function (compiledProjection) {
+ return new Patch(Route.project(this.added, compiledProjection),
+ Route.project(this.removed, compiledProjection));
+};
+
+Patch.prototype.projectObjects = function (compiledProjection) {
+ return [Route.projectObjects(this.added, compiledProjection),
+ Route.projectObjects(this.removed, compiledProjection)];
+};
+
+Patch.prototype.pretty = function () {
+ return ("<<<<<<<< Removed:\n" + Route.prettyTrie(this.removed) + "\n" +
+ "======== Added:\n" + Route.prettyTrie(this.added) + "\n" +
+ ">>>>>>>>");
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.Patch = Patch;
+module.exports.emptyPatch = emptyPatch;
+module.exports.removeEverythingPatch = removeEverythingPatch;
+
+module.exports.$Observe = $Observe;
+module.exports.$AtMeta = $AtMeta;
+module.exports.$Advertise = $Advertise;
+module.exports.observe = observe;
+module.exports.atMeta = atMeta;
+module.exports.advertise = advertise;
+module.exports.isObserve = isObserve;
+module.exports.isAtMeta = isAtMeta;
+module.exports.isAdvertise = isAdvertise;
+
+module.exports.prependAtMeta = prependAtMeta;
+module.exports.stripAtMeta = stripAtMeta;
+module.exports.observeAtMeta = observeAtMeta;
+module.exports.assert = assert;
+module.exports.retract = retract;
+module.exports.sub = sub;
+module.exports.unsub = unsub;
+module.exports.pub = pub;
+module.exports.unpub = unpub;
+
+module.exports.patchSeq = patchSeq;
+module.exports.computePatch = computePatch;
+module.exports.biasedIntersection = biasedIntersection;
diff --git a/js/src/randomid.js b/js/src/randomid.js
new file mode 100644
index 0000000..18b6061
--- /dev/null
+++ b/js/src/randomid.js
@@ -0,0 +1,26 @@
+var randomId;
+
+if ((typeof window !== 'undefined') &&
+ (typeof window.crypto !== 'undefined') &&
+ (typeof window.crypto.getRandomValues !== 'undefined')) {
+ randomId = function (byteCount) {
+ var buf = new Uint8Array(byteCount);
+ window.crypto.getRandomValues(buf);
+ return btoa(String.fromCharCode.apply(null, buf)).replace(/=/g,'');
+ };
+} else {
+ var crypto;
+ try {
+ crypto = require('crypto');
+ } catch (e) {}
+ if ((typeof crypto !== 'undefined') &&
+ (typeof crypto.randomBytes !== 'undefined')) {
+ randomId = function (byteCount) {
+ return crypto.randomBytes(byteCount).base64Slice().replace(/=/g,'');
+ };
+ } else {
+ console.warn('No suitable implementation for RandomID.randomId available.');
+ }
+}
+
+module.exports.randomId = randomId;
diff --git a/js/src/reflect.js b/js/src/reflect.js
new file mode 100644
index 0000000..43ef62b
--- /dev/null
+++ b/js/src/reflect.js
@@ -0,0 +1,28 @@
+"use strict";
+
+// Reflection on function formal parameter lists.
+// This module is based on Angular's "injector" code,
+// https://github.com/angular/angular.js/blob/master/src/auto/injector.js,
+// MIT licensed, and hence:
+// Copyright (c) 2010-2014 Google, Inc. http://angularjs.org
+// Copyright (c) 2014 Tony Garnock-Jones
+
+var FN_ARGS = /^function\s*[^\(]*\(\s*([^\)]*)\)/m;
+var FN_ARG_SPLIT = /,/;
+var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
+
+function formalParameters(fn) {
+ var result = [];
+
+ var fnText = fn.toString().replace(STRIP_COMMENTS, '');
+ var argDecl = fnText.match(FN_ARGS);
+ var args = argDecl[1].split(FN_ARG_SPLIT);
+ for (var i = 0; i < args.length; i++) {
+ var trimmed = args[i].trim();
+ if (trimmed) { result.push(trimmed); }
+ }
+
+ return result;
+}
+
+module.exports.formalParameters = formalParameters;
diff --git a/js/src/route.js b/js/src/route.js
new file mode 100644
index 0000000..efdb218
--- /dev/null
+++ b/js/src/route.js
@@ -0,0 +1,1117 @@
+"use strict";
+
+var Immutable = require("immutable");
+
+function makeStructureConstructor(label, argumentNames) {
+ var $SyndicateMeta$ = {
+ label: label,
+ arguments: argumentNames
+ };
+ return function() {
+ var result = {"$SyndicateMeta$": $SyndicateMeta$};
+ for (var i = 0; i < argumentNames.length; i++) {
+ result[argumentNames[i]] = arguments[i];
+ }
+ return result;
+ };
+}
+
+function isStructure(s) {
+ return (s !== null) && (typeof s === 'object') && ("$SyndicateMeta$" in s);
+}
+
+function structureToArray(s) {
+ var result = [s.$SyndicateMeta$.label];
+ var args = s.$SyndicateMeta$.arguments;
+ for (var i = 0; i < args.length; i++) {
+ result.push(s[args[i]]);
+ }
+ return result;
+}
+
+function $Special(name) {
+ this.name = name;
+}
+
+var __ = new $Special("wildcard"); /* wildcard marker */
+
+var SOA = new $Special("["); // start of array
+var EOA = new $Special("]"); // end of array
+
+function die(message) {
+ throw new Error(message);
+}
+
+function $Embedded(trie) {
+ this.trie = trie;
+}
+
+function embeddedTrie(trie) {
+ return new $Embedded(trie);
+}
+
+// The name argument should be a string or null; it defaults to null.
+// The pattern argument defaults to wildcard, __.
+function $Capture(name, pattern) {
+ this.name = name || null;
+ this.pattern = (typeof pattern === 'undefined' ? __ : pattern);
+}
+
+// Abbreviation: _$(...) <==> new $Capture(...)
+function _$(name, pattern) {
+ return new $Capture(name, pattern);
+}
+
+function isCapture(x) { return x instanceof $Capture || x === _$; }
+function captureName(x) { return x instanceof $Capture ? x.name : null; }
+function capturePattern(x) { return x instanceof $Capture ? x.pattern : __; }
+
+var SOC = new $Special("{"); // start of capture
+var EOC = new $Special("}"); // end of capture
+
+function $Success(value) {
+ this.value = value;
+}
+
+$Success.prototype.equals = function (other) {
+ if (!(other instanceof $Success)) return false;
+ return Immutable.is(this.value, other.value);
+};
+
+function $WildcardSequence(trie) {
+ this.trie = trie;
+}
+
+$WildcardSequence.prototype.equals = function (other) {
+ if (!(other instanceof $WildcardSequence)) return false;
+ return Immutable.is(this.trie, other.trie);
+};
+
+function is_emptyTrie(m) {
+ return Immutable.is(m, emptyTrie);
+}
+
+///////////////////////////////////////////////////////////////////////////
+// Constructors
+
+var emptyTrie = Immutable.Map();
+
+function rsuccess(v) {
+ return (v === null) ? emptyTrie : new $Success(v);
+}
+
+function rseq(e, r) {
+ if (r === emptyTrie) return emptyTrie;
+ return emptyTrie.set(e, r);
+}
+
+function rwild(r) {
+ return rseq(__, r);
+}
+
+function rwildseq(r) {
+ return (r === emptyTrie) ? emptyTrie : new $WildcardSequence(r);
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+function compilePattern(v, p) {
+ if (!p) die("compilePattern: missing pattern");
+ return walk(p, rseq(EOA, rsuccess(v)));
+
+ function walk(p, acc) {
+ if (p === __) return rwild(acc);
+
+ if (Array.isArray(p)) {
+ acc = rseq(EOA, acc);
+ for (var i = p.length - 1; i >= 0; i--) {
+ acc = walk(p[i], acc);
+ }
+ return rseq(SOA, acc);
+ }
+
+ if (Immutable.List.isList(p)) {
+ acc = rseq(EOA, acc);
+ p.reverse().forEach(function (element) {
+ acc = walk(element, acc);
+ });
+ return rseq(SOA, acc);
+ }
+
+ if (isStructure(p)) {
+ var args = p.$SyndicateMeta$.arguments;
+ acc = rseq(EOA, acc);
+ for (var i = args.length - 1; i >= 0; i--) {
+ acc = walk(p[args[i]], acc);
+ }
+ acc = rseq(p.$SyndicateMeta$.label, acc);
+ return rseq(SOA, acc);
+ }
+
+ if (p instanceof $Embedded) {
+ return appendTrie(p.trie, function (v) { return acc; });
+ } else {
+ return rseq(p, acc);
+ }
+ }
+}
+
+function matchPattern(v, p) {
+ var captureCount = 0;
+ var result = {};
+ try {
+ walk(v, p);
+ } catch (e) {
+ if (e.matchPatternFailed) return null;
+ throw e;
+ }
+ result.length = captureCount;
+ return result;
+
+ function walk(v, p) {
+ if (p === v) return;
+
+ if (p === __) return;
+
+ if (isStructure(p)) { p = structureToArray(p); }
+ if (isStructure(v)) { v = structureToArray(v); }
+
+ if (Array.isArray(p) && Array.isArray(v) && p.length === v.length) {
+ for (var i = 0; i < p.length; i++) {
+ walk(v[i], p[i]);
+ }
+ return;
+ }
+
+ if (isCapture(p)) {
+ var thisCapture = captureCount++;
+ walk(v, capturePattern(p));
+ result[captureName(p) || ('$' + thisCapture)] = v;
+ return;
+ }
+
+ if (p instanceof $Embedded) {
+ die("$Embedded patterns not supported in matchPattern()");
+ }
+
+ throw {matchPatternFailed: true};
+ }
+}
+
+function rupdate(r, key, k) {
+ var oldWild = r.get(__, emptyTrie);
+ if (Immutable.is(k, oldWild)) {
+ return r.remove(key);
+ } else {
+ return r.set(key, k);
+ }
+}
+
+function rlookup(r, key) {
+ return r.get(key, emptyTrie);
+}
+
+function rlookupWild(r, key) {
+ var result = r.get(key, false);
+ if (result) return result;
+ var wildEdge = rlookup(r, __);
+ if (is_keyOpen(key)) return rwildseq(wildEdge);
+ if (is_keyClose(key)) return (wildEdge instanceof $WildcardSequence) ? wildEdge.trie : emptyTrie;
+ return wildEdge;
+}
+
+function is_keyOpen(k) {
+ return k === SOA;
+}
+
+function is_keyClose(k) {
+ return k === EOA;
+}
+
+function is_keyNormal(k) {
+ return !(is_keyOpen(k) || is_keyClose(k));
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+var unionSuccessesDefault = function (v1, v2) {
+ if (v1 === true) return v2;
+ if (v2 === true) return v1;
+ return v1.union(v2);
+};
+
+var intersectSuccessesDefault = function (v1, v2) {
+ return v1;
+};
+
+var subtractSuccessesDefault = function (v1, v2) {
+ var r = v1.subtract(v2);
+ if (r.isEmpty()) return null;
+ return r;
+};
+
+var matchTrieSuccesses = function (v1, v2, acc) {
+ return acc.union(v2);
+};
+
+var projectSuccess = function (v) {
+ return v;
+};
+
+///////////////////////////////////////////////////////////////////////////
+
+function expandWildseq(r) {
+ return union(rwild(rwildseq(r)), rseq(EOA, r));
+}
+
+function union(o1, o2, unionSuccessesOpt) {
+ var unionSuccesses = unionSuccessesOpt || unionSuccessesDefault;
+ return merge(o1, o2);
+
+ function merge(o1, o2) {
+ if (is_emptyTrie(o1)) return o2;
+ if (is_emptyTrie(o2)) return o1;
+ return walk(o1, o2);
+ }
+
+ function walk(r1, r2) {
+ if (r1 instanceof $WildcardSequence) {
+ if (r2 instanceof $WildcardSequence) {
+ return rwildseq(walk(r1.trie, r2.trie));
+ }
+ r1 = expandWildseq(r1.trie);
+ } else if (r2 instanceof $WildcardSequence) {
+ r2 = expandWildseq(r2.trie);
+ }
+
+ if (r1 instanceof $Success) {
+ if (r2 instanceof $Success) {
+ return rsuccess(unionSuccesses(r1.value, r2.value));
+ } else {
+ die("Route.union: left short!");
+ }
+ } else if (r2 instanceof $Success) {
+ die("Route.union: right short!");
+ }
+
+ var w = merge(rlookup(r1, __), rlookup(r2, __));
+ var target;
+
+ function examineKey(key) {
+ if ((key !== __) && !target.has(key)) {
+ target = rupdate(target, key, merge(rlookupWild(r1, key), rlookupWild(r2, key)));
+ }
+ }
+
+ if (is_emptyTrie(w)) {
+ var smaller = r1.size < r2.size ? r1 : r2;
+ var larger = r1.size < r2.size ? r2 : r1;
+ target = larger;
+ smaller.forEach(function (val, key) {
+ var k = merge(rlookup(smaller, key), rlookup(larger, key));
+ target = rupdate(target, key, k);
+ });
+ } else {
+ target = rwild(w);
+ r1.forEach(function (val, key) { examineKey(key) });
+ r2.forEach(function (val, key) { examineKey(key) });
+ }
+
+ return target;
+ }
+}
+
+function unionN() {
+ var acc = emptyTrie;
+ for (var i = 0; i < arguments.length; i++) {
+ acc = union(acc, arguments[i]);
+ }
+ return acc;
+}
+
+function intersect(o1, o2, intersectSuccessesOpt, leftShortOpt) {
+ var intersectSuccesses = intersectSuccessesOpt || intersectSuccessesDefault;
+ var leftShort = leftShortOpt || function (v, r) {
+ die("Route.intersect: left side short!");
+ };
+ return walk(o1, o2);
+
+ function walkFlipped(r2, r1) { return walk(r1, r2); }
+
+ function walk(r1, r2) {
+ // INVARIANT: r1 is a part of the original o1, and
+ // likewise for r2. This is so that the first arg to
+ // intersectSuccesses always comes from r1, and the second
+ // from r2.
+ if (is_emptyTrie(r1)) return emptyTrie;
+ if (is_emptyTrie(r2)) return emptyTrie;
+
+ if (r1 instanceof $WildcardSequence) {
+ if (r2 instanceof $WildcardSequence) {
+ return rwildseq(walk(r1.trie, r2.trie));
+ }
+ r1 = expandWildseq(r1.trie);
+ } else if (r2 instanceof $WildcardSequence) {
+ r2 = expandWildseq(r2.trie);
+ }
+
+ if (r1 instanceof $Success) {
+ if (r2 instanceof $Success) {
+ return rsuccess(intersectSuccesses(r1.value, r2.value));
+ } else {
+ return leftShort(r1.value, r2);
+ }
+ }
+
+ var w1 = rlookup(r1, __);
+ var w2 = rlookup(r2, __);
+ var w = walk(w1, w2);
+
+ var target = emptyTrie;
+
+ function examineKey(key) {
+ if ((key !== __) && !target.has(key)) {
+ target = rupdate(target, key, walk(rlookupWild(r1, key), rlookupWild(r2, key)));
+ }
+ }
+
+ if (is_emptyTrie(w1)) {
+ if (is_emptyTrie(w2)) {
+ (r1.size < r2.size ? r1 : r2).forEach(function (val, key) { examineKey(key) });
+ } else {
+ r1.forEach(function (val, key) { examineKey(key) });
+ }
+ } else {
+ if (is_emptyTrie(w2)) {
+ r2.forEach(function (val, key) { examineKey(key) });
+ } else {
+ target = rupdate(target, __, w);
+ r1.forEach(function (val, key) { examineKey(key) });
+ r2.forEach(function (val, key) { examineKey(key) });
+ }
+ }
+ return target;
+ }
+}
+
+// The subtractSuccesses function should return null to signal "no
+// remaining success values".
+function subtract(o1, o2, subtractSuccessesOpt) {
+ var subtractSuccesses = subtractSuccessesOpt || subtractSuccessesDefault;
+ return walk(o1, o2);
+
+ function walkFlipped(r2, r1) { return walk(r1, r2); }
+
+ function walk(r1, r2) {
+ if (is_emptyTrie(r1)) {
+ return emptyTrie;
+ } else {
+ if (is_emptyTrie(r2)) {
+ return r1;
+ }
+ }
+
+ if (r1 instanceof $WildcardSequence) {
+ if (r2 instanceof $WildcardSequence) {
+ return rwildseq(walk(r1.trie, r2.trie));
+ }
+ r1 = expandWildseq(r1.trie);
+ } else if (r2 instanceof $WildcardSequence) {
+ r2 = expandWildseq(r2.trie);
+ }
+
+ if (r1 instanceof $Success && r2 instanceof $Success) {
+ return rsuccess(subtractSuccesses(r1.value, r2.value));
+ }
+
+ var w1 = rlookup(r1, __);
+ var w2 = rlookup(r2, __);
+ var w = walk(w1, w2);
+ var target;
+
+ function examineKey(key) {
+ if (key !== __) {
+ var k1 = rlookupWild(r1, key);
+ var k2 = rlookupWild(r2, key);
+ var updatedK = walk(k1, k2);
+
+ // Here we ensure a "minimal" remainder in cases
+ // where after an erasure, a particular key's
+ // continuation is the same as the wildcard's
+ // continuation. TODO: the equals check may
+ // be expensive. If so, how can it be made
+ // cheaper?
+ if (is_keyOpen(key)) {
+ target = rupdate(target, key,
+ ((updatedK instanceof $WildcardSequence) &&
+ Immutable.is(updatedK.trie, w))
+ ? w
+ : updatedK);
+ } else {
+ target = rupdate(target, key, updatedK);
+ }
+ }
+ }
+
+ if (is_emptyTrie(w2)) {
+ target = r1;
+ r2.forEach(function (val, key) { examineKey(key) });
+ } else {
+ target = emptyTrie;
+ target = rupdate(target, __, w);
+ r1.forEach(function (val, key) { examineKey(key) });
+ r2.forEach(function (val, key) { examineKey(key) });
+ }
+
+ return collapseWildcardSequences(target);
+ }
+}
+
+function collapseWildcardSequences(target) {
+ // Here, the target is complete. If it has only two keys,
+ // one wild and one is_keyClose, and wild's continuation
+ // is a $WildcardSequence and the other continuation is
+ // identical to the sequence's continuation, then replace
+ // the whole thing with a nested $WildcardSequence.
+ // (We know w === rlookup(target, __) from before.)
+ //
+ // TODO: I suspect actually this applies even if there are
+ // more than two keys, so long as all their continuations
+ // are identical and there's at least one is_keyClose
+ // alongside a wild.
+ if (target.size === 2) {
+ var finalW = rlookup(target, __);
+ if (finalW instanceof $WildcardSequence) {
+ target.forEach(function (k, key) {
+ if ((key !== __) && is_keyClose(key)) {
+ if (Immutable.is(k, finalW.trie)) {
+ target = finalW;
+ return false; // terminate the iteration early
+ }
+ }
+ });
+ }
+ }
+ return target;
+}
+
+// Returns null on failed match, otherwise the appropriate success
+// value contained in the trie r.
+function matchValue(r, v) {
+ var failureResult = null;
+
+ var vs = Immutable.List.of(v);
+ var stack = [Immutable.List()];
+
+ while (!is_emptyTrie(r)) {
+ if (r instanceof $WildcardSequence) {
+ if (stack.length === 0) return failureResult;
+ vs = stack.pop();
+ r = r.trie;
+ continue;
+ }
+
+ if (r instanceof $Success) {
+ if (vs.size === 0 && stack.length === 0) return r.value;
+ return failureResult;
+ }
+
+ if (vs.size === 0) {
+ if (stack.length === 0) return failureResult;
+ vs = stack.pop();
+ r = rlookup(r, EOA);
+ continue;
+ }
+
+ var v = vs.first();
+ vs = vs.shift();
+
+ if (typeof v === 'string' && v.substring(0, 2) === '__') {
+ die("Cannot match special string starting with __");
+ }
+
+ if (Array.isArray(v)) {
+ if (r.has(SOA)) {
+ r = rlookup(r, SOA);
+ stack.push(vs);
+ vs = Immutable.List(v);
+ } else {
+ r = rlookup(r, __);
+ }
+ } else if (isStructure(v)) {
+ if (r.has(SOA)) {
+ r = rlookup(r, SOA);
+ stack.push(vs);
+ vs = Immutable.List.of(v.$SyndicateMeta$.label);
+ var args = v.$SyndicateMeta$.arguments;
+ for (var i = 0; i < args.length; i++) {
+ vs = vs.push(v[args[i]]);
+ }
+ } else {
+ r = rlookup(r, __);
+ }
+ } else {
+ if (r.has(v)) {
+ r = rlookup(r, v);
+ } else {
+ r = rlookup(r, __);
+ }
+ }
+ }
+
+ return failureResult;
+}
+
+function matchTrie(o1, o2, seed, leftShortOpt) {
+ var acc = typeof seed === 'undefined' ? Immutable.Set() : seed; // variable updated imperatively
+ var leftShort = leftShortOpt || function (v, r, acc) {
+ die("Route.matchTrie: left side short!");
+ };
+ walk(o1, o2);
+ return acc;
+
+ function walkFlipped(r2, r1) { return walk(r1, r2); }
+
+ function walk(r1, r2) {
+ if (is_emptyTrie(r1) || is_emptyTrie(r2)) return;
+
+ if (r1 instanceof $WildcardSequence) {
+ if (r2 instanceof $WildcardSequence) {
+ walk(r1.trie, r2.trie);
+ return;
+ }
+ r1 = expandWildseq(r1.trie);
+ } else if (r2 instanceof $WildcardSequence) {
+ r2 = expandWildseq(r2.trie);
+ }
+
+ if (r1 instanceof $Success) {
+ if (r2 instanceof $Success) {
+ acc = matchTrieSuccesses(r1.value, r2.value, acc);
+ } else {
+ acc = leftShort(r1.value, r2, acc);
+ }
+ return;
+ } else if (r2 instanceof $Success) {
+ die("Route.matchTrie: right side short!");
+ }
+
+ var w1 = rlookup(r1, __);
+ var w2 = rlookup(r2, __);
+ walk(w1, w2);
+
+ function examineKey(key) {
+ if (key !== __) {
+ var k1 = rlookup(r1, key);
+ var k2 = rlookup(r2, key);
+ if (is_emptyTrie(k1)) {
+ if (is_emptyTrie(k2)) {
+ return;
+ } else {
+ walkWild(walk, w1, key, k2);
+ }
+ } else {
+ if (is_emptyTrie(k2)) {
+ walkWild(walkFlipped, w2, key, k1);
+ } else {
+ walk(k1, k2);
+ }
+ }
+ }
+ }
+
+ // Optimize similarly to intersect().
+ if (is_emptyTrie(w1)) {
+ if (is_emptyTrie(w2)) {
+ (r1.size < r2.size ? r1 : r2).forEach(function (val, key) { examineKey(key) });
+ } else {
+ r1.forEach(function (val, key) { examineKey(key) });
+ }
+ } else {
+ if (is_emptyTrie(w2)) {
+ r2.forEach(function (val, key) { examineKey(key) });
+ } else {
+ r1.forEach(function (val, key) { examineKey(key) });
+ r2.forEach(function (val, key) { examineKey(key) });
+ }
+ }
+ }
+
+ function walkWild(walker, w, key, k) {
+ if (is_emptyTrie(w)) return;
+ if (is_keyOpen(key)) {
+ walker(rwildseq(w), k);
+ return;
+ }
+ if (is_keyClose(key)) {
+ if (w instanceof $WildcardSequence) walker(w.trie, k);
+ return;
+ }
+ walker(w, k);
+ }
+}
+
+function appendTrie(m, mTailFn) {
+ return walk(m);
+
+ function walk(m) {
+ if (is_emptyTrie(m)) return emptyTrie;
+ if (m instanceof $WildcardSequence) return rwildseq(walk(m.trie));
+ if (m instanceof $Success) die("Ill-formed trie");
+
+ var target = emptyTrie;
+ m.forEach(function (k, key) {
+ if (is_keyClose(key) && (k instanceof $Success)) {
+ target = union(target, mTailFn(k.value));
+ } else {
+ target = rupdate(target, key, walk(k));
+ }
+ });
+ return target;
+ }
+}
+
+function triePruneBranch(m, keys) {
+ if (keys.isEmpty()) return emptyTrie;
+
+ if (is_emptyTrie(m)) return emptyTrie;
+ if (m instanceof $WildcardSequence) {
+ return collapseWildcardSequences(triePruneBranch(expandWildseq(m.trie), keys));
+ }
+ if (m instanceof $Success) return m;
+
+ var key = keys.first();
+ var rest = keys.shift();
+ return rupdate(m, key, triePruneBranch(rlookupWild(m, key), rest));
+}
+
+function trieStep(m, key) {
+ if (is_emptyTrie(m)) return emptyTrie;
+ if (m instanceof $WildcardSequence) return (is_keyClose(key) ? m.trie : m);
+ if (m instanceof $Success) return emptyTrie;
+ return rlookupWild(m, key);
+}
+
+function relabel(m, f) {
+ return walk(m);
+
+ function walk(m) {
+ if (is_emptyTrie(m)) return emptyTrie;
+ if (m instanceof $WildcardSequence) return rwildseq(walk(m.trie));
+ if (m instanceof $Success) return rsuccess(f(m.value));
+
+ var target = emptyTrie;
+ m.forEach(function (k, key) {
+ target = rupdate(target, key, walk(k));
+ });
+ return target;
+ }
+}
+
+function compileProjection(/* projection, projection, ... */) {
+ var names = [];
+ var acc = [];
+ for (var i = 0; i < arguments.length; i++) {
+ walk(arguments[i]);
+ }
+ acc.push(EOA);
+ return {names: names, spec: acc};
+
+ function walk(p) {
+ if (isCapture(p)) {
+ names.push(captureName(p));
+ acc.push(SOC);
+ walk(capturePattern(p));
+ acc.push(EOC);
+ return;
+ }
+
+ if (Array.isArray(p)) {
+ acc.push(SOA);
+ for (var i = 0; i < p.length; i++) {
+ walk(p[i]);
+ }
+ acc.push(EOA);
+ return;
+ }
+
+ if (isStructure(p)) {
+ acc.push(SOA);
+ acc.push(p.$SyndicateMeta$.label);
+ var args = p.$SyndicateMeta$.arguments;
+ for (var i = 0; i < args.length; i++) {
+ walk(p[args[i]]);
+ }
+ acc.push(EOA);
+ return;
+ }
+
+ if (p instanceof $Embedded) {
+ die("Cannot embed trie in projection");
+ } else {
+ acc.push(p);
+ }
+ }
+}
+
+function projectionToPattern(p) {
+ return walk(p);
+
+ function walk(p) {
+ if (isCapture(p)) return walk(capturePattern(p));
+
+ if (Array.isArray(p)) {
+ var result = [];
+ for (var i = 0; i < p.length; i++) {
+ result.push(walk(p[i]));
+ }
+ return result;
+ }
+
+ if (isStructure(p)) {
+ var result = {"$SyndicateMeta$": p.$SyndicateMeta$};
+ var args = p.$SyndicateMeta$.arguments;
+ for (var i = 0; i < args.length; i++) {
+ result[args[i]] = walk(p[args[i]]);
+ }
+ return result;
+ }
+
+ if (p instanceof $Embedded) {
+ return p.trie;
+ } else {
+ return p;
+ }
+ }
+}
+
+function project(m, compiledProjection) {
+ var spec = compiledProjection.spec;
+ return walk(false, m, 0);
+
+ function walk(isCapturing, m, specIndex) {
+ if (specIndex >= spec.length) {
+ if (isCapturing) die("Bad specification: unclosed capture");
+ if (m instanceof $Success) {
+ return rseq(EOA, rsuccess(projectSuccess(m.value)));
+ } else {
+ return emptyTrie;
+ }
+ }
+
+ if (is_emptyTrie(m)) return emptyTrie;
+
+ var item = spec[specIndex];
+ var nextIndex = specIndex + 1;
+
+ if (item === EOC) {
+ if (!isCapturing) die("Bad specification: unexpected EOC");
+ return walk(false, m, nextIndex);
+ }
+
+ if (item === SOC) {
+ if (isCapturing) die("Bad specification: nested capture");
+ return walk(true, m, nextIndex);
+ }
+
+ if (item === __) {
+ if (m instanceof $WildcardSequence) {
+ if (isCapturing) {
+ return rwild(walk(isCapturing, m, nextIndex));
+ } else {
+ return walk(isCapturing, m, nextIndex);
+ }
+ }
+
+ if (m instanceof $Success) {
+ return emptyTrie;
+ }
+
+ var target;
+ if (isCapturing) {
+ target = emptyTrie;
+ target = rupdate(target, __, walk(isCapturing, rlookup(m, __), nextIndex));
+ m.forEach(function (mk, key) {
+ if (key !== __) {
+ if (is_keyOpen(key)) {
+ target = rupdate(target, key, captureNested(mk, function (mk2) {
+ return walk(isCapturing, mk2, nextIndex);
+ }));
+ } else if (is_keyClose(key)) {
+ // do nothing
+ } else {
+ target = rupdate(target, key, walk(isCapturing, mk, nextIndex));
+ }
+ }
+ });
+ } else {
+ target = walk(isCapturing, rlookup(m, __), nextIndex);
+ m.forEach(function (mk, key) {
+ if (key !== __) {
+ if (is_keyOpen(key)) {
+ target = union(target, skipNested(mk, function (mk2) {
+ return walk(isCapturing, mk2, nextIndex);
+ }));
+ } else if (is_keyClose(key)) {
+ // do nothing
+ } else {
+ target = union(target, walk(isCapturing, mk, nextIndex));
+ }
+ }
+ });
+ }
+ return target;
+ }
+
+ var result;
+ if (m instanceof $WildcardSequence) {
+ if (is_keyOpen(item)) {
+ result = walk(isCapturing, rwildseq(m), nextIndex);
+ } else if (is_keyClose(item)) {
+ result = walk(isCapturing, m.trie, nextIndex);
+ } else {
+ result = walk(isCapturing, m, nextIndex);
+ }
+ } else if (m instanceof $Success) {
+ result = emptyTrie;
+ } else {
+ if (is_keyOpen(item)) {
+ result = walk(isCapturing, rwildseq(rlookup(m, __)), nextIndex);
+ } else if (is_keyClose(item)) {
+ result = emptyTrie;
+ } else {
+ result = walk(isCapturing, rlookup(m, __), nextIndex);
+ }
+ result = union(result, walk(isCapturing, rlookup(m, item), nextIndex));
+ }
+ if (isCapturing) {
+ result = rseq(item, result);
+ }
+ return result;
+ }
+
+ function captureNested(m, cont) {
+ if (m instanceof $WildcardSequence) {
+ return rwildseq(cont(m.trie));
+ }
+
+ if (is_emptyTrie(m) || (m instanceof $Success)) {
+ return emptyTrie;
+ }
+
+ var target = emptyTrie;
+ target = rupdate(target, __, captureNested(rlookup(m, __), cont));
+ m.forEach(function (mk, key) {
+ if (key !== __) {
+ if (is_keyOpen(key)) {
+ target = rupdate(target, key, captureNested(mk, function (mk2) {
+ return captureNested(mk2, cont);
+ }));
+ } else if (is_keyClose(key)) {
+ target = rupdate(target, key, cont(mk));
+ } else {
+ target = rupdate(target, key, captureNested(mk, cont));
+ }
+ }
+ });
+ return target;
+ }
+
+ function skipNested(m, cont) {
+ if (m instanceof $WildcardSequence) {
+ return cont(m.trie);
+ }
+
+ if (is_emptyTrie(m) || (m instanceof $Success)) {
+ return emptyTrie;
+ }
+
+ var target = skipNested(rlookup(m, __), cont);
+ m.forEach(function (mk, key) {
+ if (key !== __) {
+ if (is_keyOpen(key)) {
+ target = union(target, skipNested(mk, function (mk2) {
+ return skipNested(mk2, cont)
+ }));
+ } else if (is_keyClose(key)) {
+ target = union(target, cont(mk));
+ } else {
+ target = union(target, skipNested(mk, cont));
+ }
+ }
+ });
+ return target;
+ }
+}
+
+function trieKeys(m) {
+ if (is_emptyTrie(m)) return Immutable.Set();
+ var result = walkSeq(m, function (vss, vsk) { return vss; });
+ if (result === null) return null;
+ return Immutable.Set(result);
+
+ function walk(m, k) {
+ if (m instanceof $WildcardSequence) return null;
+ if (m instanceof $Success) return [];
+ if (m.has(__)) return null;
+ var acc = [];
+ m.forEach(function (mk, key) {
+ var piece;
+ if (is_keyOpen(key)) {
+ piece = walkSeq(mk, function (vss, vsk) {
+ var acc = [];
+ for (var i = 0; i < vss.length; i++) {
+ var vs = vss[i];
+ acc = acc.concat(k(transformSeqs(vs, key), vsk));
+ }
+ return acc;
+ });
+ } else if (is_keyClose(key)) {
+ die("trieKeys: internal error: unexpected key-close");
+ } else {
+ piece = k(key, mk);
+ }
+ if (piece === null) return null;
+ acc = acc.concat(piece);
+ });
+ return acc;
+ }
+
+ function walkSeq(m, k) {
+ if (m instanceof $WildcardSequence) return null;
+ if (m instanceof $Success) return k([], emptyTrie); // TODO: ??
+ if (m.has(__)) return null;
+ var acc = [];
+ m.forEach(function (mk, key) {
+ var piece;
+ if (is_keyClose(key)) {
+ piece = k([Immutable.List()], mk);
+ } else {
+ piece = walk(rseq(key, mk), function (v, vk) {
+ return walkSeq(vk, function (vss, vsk) {
+ var acc = [];
+ for (var i = 0; i < vss.length; i++) {
+ acc.push(vss[i].unshift(v));
+ }
+ return k(acc, vsk);
+ });
+ });
+ }
+ if (piece === null) return null;
+ acc = acc.concat(piece);
+ });
+ return acc;
+ }
+
+ function transformSeqs(vs, opener) {
+ if (opener === SOA) return vs;
+ die("Internal error: unknown opener " + opener);
+ }
+}
+
+function captureToObject(captures, compiledProjection) {
+ var d = {};
+ captures.forEach(function (key, index) {
+ d[compiledProjection.names[index] || ('$' + index)] = key;
+ });
+ return d;
+}
+
+function trieKeysToObjects(trieKeysResult, compiledProjection) {
+ if (trieKeysResult === null) return null;
+ return trieKeysResult.toList().map(function (e) { return captureToObject(e, compiledProjection); });
+}
+
+function projectObjects(m, compiledProjection) {
+ return trieKeysToObjects(trieKeys(project(m, compiledProjection)), compiledProjection);
+}
+
+function prettyTrie(m, initialIndent) {
+ var acc = [];
+ walk(initialIndent || 0, m);
+ return acc.join('');
+
+ function walk(i, m) {
+ if (m instanceof $WildcardSequence) {
+ acc.push("...>");
+ walk(i + 4, m.trie);
+ return;
+ }
+ if (m instanceof $Success) {
+ var v = m.value;
+ if (Immutable.Set.isSet(v)) { v = v.toArray(); }
+ acc.push("{" + JSON.stringify(v) + "}");
+ return;
+ }
+
+ if (m.size === 0) {
+ acc.push("::: nothing");
+ return;
+ }
+
+ var needSep = false;
+ m.toOrderedMap()
+ .sortBy(function (k, key) { return key })
+ .forEach(function (k, key) {
+ if (needSep) {
+ acc.push("\n");
+ acc.push(indentStr(i));
+ } else {
+ needSep = true;
+ }
+ acc.push(" ");
+ if (key === __) key = '★';
+ else if (key === SOA) key = '<';
+ else if (key === EOA) key = '>';
+ else if (key instanceof $Special) key = key.name;
+ else key = JSON.stringify(key);
+ acc.push(key);
+ walk(i + key.length + 1, k);
+ });
+ }
+
+ function indentStr(i) {
+ return new Array(i + 1).join(' '); // eww
+ }
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+module.exports.__ = __;
+module.exports.SOA = SOA;
+module.exports.EOA = EOA;
+module.exports.$Capture = $Capture;
+module.exports.$Special = $Special;
+module.exports.makeStructureConstructor = makeStructureConstructor;
+module.exports._$ = _$;
+module.exports.is_emptyTrie = is_emptyTrie;
+module.exports.emptyTrie = emptyTrie;
+module.exports.embeddedTrie = embeddedTrie;
+module.exports.compilePattern = compilePattern;
+module.exports.matchPattern = matchPattern;
+module.exports._union = union;
+module.exports.union = unionN;
+module.exports.intersect = intersect;
+module.exports.subtract = subtract;
+module.exports.matchValue = matchValue;
+module.exports.matchTrie = matchTrie;
+module.exports.appendTrie = appendTrie;
+module.exports.triePruneBranch = triePruneBranch;
+module.exports.trieStep = trieStep;
+module.exports.relabel = relabel;
+module.exports.compileProjection = compileProjection;
+module.exports.projectionToPattern = projectionToPattern;
+module.exports.project = project;
+module.exports.trieKeys = trieKeys;
+module.exports.captureToObject = captureToObject;
+module.exports.trieKeysToObjects = trieKeysToObjects;
+module.exports.projectObjects = projectObjects;
+module.exports.prettyTrie = prettyTrie;
+
+// For testing
+module.exports._testing = {
+ rsuccess: rsuccess,
+ rseq: rseq,
+ rwild: rwild,
+ rwildseq: rwildseq
+};
diff --git a/js/src/seal.js b/js/src/seal.js
new file mode 100644
index 0000000..9cde479
--- /dev/null
+++ b/js/src/seal.js
@@ -0,0 +1,18 @@
+var Immutable = require('immutable');
+
+function Seal(contents) {
+ this.sealContents = contents;
+ Object.freeze(this);
+}
+
+Seal.prototype.equals = function (other) {
+ if (!(other instanceof Seal)) return false;
+ return Immutable.is(this.sealContents, other.sealContents);
+};
+
+function seal(contents) {
+ return new Seal(contents);
+}
+
+module.exports.Seal = Seal;
+module.exports.seal = seal;
diff --git a/js/src/util.js b/js/src/util.js
new file mode 100644
index 0000000..0961ca9
--- /dev/null
+++ b/js/src/util.js
@@ -0,0 +1,25 @@
+"use strict";
+
+var Reflect = require("./reflect.js");
+
+module.exports.extend = function (what, _with) {
+ for (var prop in _with) {
+ if (_with.hasOwnProperty(prop)) {
+ what[prop] = _with[prop];
+ }
+ }
+ return what;
+};
+
+module.exports.kwApply = function (f, thisArg, args) {
+ var formals = Reflect.formalParameters(f);
+ var actuals = []
+ for (var i = 0; i < formals.length; i++) {
+ var formal = formals[i];
+ if (!(formal in args)) {
+ throw new Error("Function parameter '"+formal+"' not present in args");
+ }
+ actuals.push(args[formal]);
+ }
+ return f.apply(thisArg, actuals);
+};
diff --git a/js/test/test-mux.js b/js/test/test-mux.js
new file mode 100644
index 0000000..24eb348
--- /dev/null
+++ b/js/test/test-mux.js
@@ -0,0 +1,275 @@
+"use strict";
+
+var expect = require('expect.js');
+var Immutable = require('immutable');
+
+var Route = require('../src/route.js');
+var Patch = require('../src/patch.js');
+var Mux = require('../src/mux.js');
+
+var __ = Route.__;
+var _$ = Route._$;
+
+function checkPrettyTrie(m, expected) {
+ expect(Route.prettyTrie(m)).to.equal(expected.join('\n'));
+}
+
+function checkPrettyPatch(p, expectedAdded, expectedRemoved) {
+ expect(p.pretty()).to.equal(
+ ('<<<<<<<< Removed:\n' + expectedRemoved.join('\n') + '\n' +
+ '======== Added:\n' + expectedAdded.join('\n') + '\n' +
+ '>>>>>>>>'));
+}
+
+function getM() {
+ var m = new Mux.Mux();
+ expect(m.addStream(Patch.assert(1).andThen(Patch.assert(2))).pid).to.equal(0);
+ expect(m.addStream(Patch.assert(3).andThen(Patch.assert(2))).pid).to.equal(1);
+ return m;
+}
+
+describe('mux stream', function () {
+ describe('addition', function () {
+ it('should union interests appropriately', function () {
+ var m = getM();
+ checkPrettyTrie(m.routingTable, [' 1 >{[0]}',
+ ' 2 >{[0,1]}',
+ ' 3 >{[1]}']);
+ checkPrettyTrie(m.interestsOf(0), [' 1 >{[0]}',
+ ' 2 >{[0]}']);
+ checkPrettyTrie(m.interestsOf(1), [' 2 >{[1]}',
+ ' 3 >{[1]}']);
+ });
+ });
+
+ describe('update', function () {
+ it('should update interests appropriately', function () {
+ var rawPatch =
+ Patch.assert(1)
+ .andThen(Patch.retract(2))
+ .andThen(Patch.retract(3))
+ .andThen(Patch.assert(4))
+ .andThen(Patch.retract(99));
+ checkPrettyPatch(rawPatch,
+ [' 1 >{true}',
+ ' 4 >{true}'],
+ [' 2 >{true}',
+ ' 3 >{true}',
+ ' 99 >{true}']);
+
+ var m = getM();
+ var updateStreamResult = m.updateStream(1, rawPatch);
+ expect(updateStreamResult.pid).to.equal(1);
+ checkPrettyPatch(updateStreamResult.delta,
+ [' 1 >{[1]}',
+ ' 4 >{[1]}'],
+ [' 2 >{[1]}',
+ ' 3 >{[1]}']);
+ checkPrettyTrie(m.routingTable, [' 1 >{[0,1]}',
+ ' 2 >{[0]}',
+ ' 4 >{[1]}']);
+ checkPrettyTrie(m.interestsOf(0), [' 1 >{[0]}',
+ ' 2 >{[0]}']);
+ checkPrettyTrie(m.interestsOf(1), [' 1 >{[1]}',
+ ' 4 >{[1]}']);
+ checkPrettyPatch(updateStreamResult.deltaAggregate,
+ [' 4 >{[1]}'],
+ [' 3 >{[1]}']);
+ });
+ });
+
+ describe('removal', function () {
+ it('should remove streams properly', function () {
+ var m = getM();
+ var updateStreamResult = m.removeStream(1);
+ expect(updateStreamResult.pid).to.equal(1);
+ checkPrettyPatch(updateStreamResult.delta,
+ ['::: nothing'],
+ [' 2 >{[1]}',
+ ' 3 >{[1]}']);
+ checkPrettyTrie(m.routingTable, [' 1 >{[0]}',
+ ' 2 >{[0]}']);
+ checkPrettyTrie(m.interestsOf(0), [' 1 >{[0]}',
+ ' 2 >{[0]}']);
+ checkPrettyTrie(m.interestsOf(1), ['::: nothing']);
+ checkPrettyPatch(updateStreamResult.deltaAggregate,
+ ['::: nothing'],
+ [' 3 >{[1]}']);
+ });
+ });
+});
+
+describe('computeEvents', function () {
+ describe('for new assertions and existing specific interest', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.sub(1));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.assert(1).andThen(Patch.assert(2)));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield just the assertion of interest', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(0).strip().equals(Patch.assert(1))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for removed assertions', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.sub([__]));
+ var newM = oldM.shallowCopy();
+ newM.addStream(Patch.assert([1]).andThen(Patch.assert([2])));
+ var updateStreamResult = newM.updateStream(1, Patch.retract([1]));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield just the specific retraction', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(0).strip().equals(Patch.retract([1]))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for new assertions and existing general interest', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.sub([__]));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.assert([1]).andThen(Patch.assert([2])));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield both new assertions', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(0).strip().equals(Patch.assert([1]).andThen(Patch.assert([2]))))
+ .to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ })
+
+ describe('for new specific interest and existing assertion', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.assert(1).andThen(Patch.assert(2)));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.sub(1));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield just the assertion of interest', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.assert(1))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for new general interest and existing assertion', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.assert([1]).andThen(Patch.assert([2])));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.sub([__]));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield just the assertion of interest', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.assert([1]).andThen(Patch.assert([2]))))
+ .to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for removed general interest', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.assert([1]).andThen(Patch.assert([2])));
+ oldM.addStream(Patch.sub([__]));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.updateStream(1, Patch.unsub([__]));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield both retractions', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.retract([1]).andThen(Patch.retract([2]))))
+ .to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for removed specific interest', function () {
+ it('should yield three appropriate events for three intercessions', function () {
+ var oldM = new Mux.Mux();
+ oldM.addStream(Patch.assert([1]).andThen(Patch.assert([2])));
+ oldM.addStream(Patch.sub([__]));
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.updateStream(1, Patch.unsub([1]));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.retract([1]))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+
+ oldM = newM;
+ newM = oldM.shallowCopy();
+ events = Mux.computeEvents(oldM, newM, newM.updateStream(1, Patch.unsub([2])));
+
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.retract([2])))
+ .to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+
+ oldM = newM;
+ newM = oldM.shallowCopy();
+ events = Mux.computeEvents(oldM, newM, newM.updateStream(0, Patch.assert([3])));
+
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(1).strip().equals(Patch.assert([3]))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for new meta assertion', function () {
+ var oldM = new Mux.Mux();
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.assert(Patch.atMeta(1)).andThen(Patch.assert(2)));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should yield no local events and one meta event', function () {
+ expect(events.eventMap.size).to.be(0);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.metaEvents.get(0).strip().equals(Patch.assert(1))).to.be(true);
+ });
+ });
+
+ describe('for adding supply and demand simultaneously', function () {
+ var oldM = new Mux.Mux();
+ var newM = oldM.shallowCopy();
+ var updateStreamResult = newM.addStream(Patch.assert(1).andThen(Patch.sub(1)));
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should send a patch back', function () {
+ expect(events.eventMap.size).to.be(1);
+ expect(events.metaEvents.size).to.be(1);
+ expect(events.eventMap.get(0).strip().equals(Patch.assert(1))).to.be(true);
+ expect(events.metaEvents.get(0).equals(Patch.emptyPatch)).to.be(true);
+ });
+ });
+
+ describe('for a no-op but nonempty patch', function () {
+ var oldM = new Mux.Mux();
+ var pid1 = oldM.addStream(Patch.assert(["fieldContents", "initial", 7])).pid;
+ var pid2 = oldM.addStream(Patch.sub(["fieldContents", __, __])).pid;
+ var newM = oldM.shallowCopy();
+ var unclampedPatch =
+ Patch.retract(["fieldContents", __, __])
+ .andThen(Patch.assert(["fieldContents", "initial", 7]));
+ var updateStreamResult = newM.updateStream(pid1, unclampedPatch);
+ var events = Mux.computeEvents(oldM, newM, updateStreamResult);
+
+ it('should send no patch to the subscriber', function () {
+ expect(events.eventMap.size).to.be(0);
+ });
+ });
+});
diff --git a/js/test/test-patch.js b/js/test/test-patch.js
new file mode 100644
index 0000000..e622487
--- /dev/null
+++ b/js/test/test-patch.js
@@ -0,0 +1,141 @@
+"use strict";
+
+var expect = require('expect.js');
+var Immutable = require('immutable');
+
+var Route = require('../src/route.js');
+var Patch = require('../src/patch.js');
+
+var __ = Route.__;
+var _$ = Route._$;
+
+function checkPrettyPatch(p, expectedAdded, expectedRemoved) {
+ expect(p.pretty()).to.equal(
+ ('<<<<<<<< Removed:\n' + expectedRemoved.join('\n') + '\n' +
+ '======== Added:\n' + expectedAdded.join('\n') + '\n' +
+ '>>>>>>>>'));
+}
+
+describe('basic patch compilation', function () {
+ it('should print as expected', function () {
+ checkPrettyPatch(Patch.assert([1, 2]),
+ [' < 1 2 > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.assert(__),
+ [' ★ >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub(__),
+ [' < $Observe ★ > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2]),
+ [' < $Observe < 1 2 > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.pub('x'),
+ [' < $Advertise "x" > >{true}'],
+ ['::: nothing']);
+ });
+
+ it('should work at nonzero metalevel', function () {
+ checkPrettyPatch(Patch.assert([1, 2], 0),
+ [' < 1 2 > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.assert([1, 2], 1),
+ [' < $AtMeta < 1 2 > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.assert([1, 2], 2),
+ [' < $AtMeta < $AtMeta < 1 2 > > > >{true}'],
+ ['::: nothing']);
+
+ checkPrettyPatch(Patch.sub([1, 2], 0),
+ [' < $Observe < 1 2 > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2], 1),
+ [' < $AtMeta < $Observe < 1 2 > > > >{true}',
+ ' $Observe < $AtMeta < 1 2 > > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2], 2),
+ [' < $AtMeta < $AtMeta < $Observe < 1 2 > > > > >{true}',
+ ' $Observe < $AtMeta < 1 2 > > > > >{true}',
+ ' $Observe < $AtMeta < $AtMeta < 1 2 > > > > >{true}'],
+ ['::: nothing']);
+ });
+});
+
+describe('patch sequencing', function () {
+ it('should do the right thing in simple cases', function () {
+ checkPrettyPatch(Patch.assert(__).andThen(Patch.retract(3)),
+ [' ★ >{true}',
+ ' 3::: nothing'],
+ [' 3 >{true}']);
+ checkPrettyPatch(Patch.assert(3).andThen(Patch.retract(__)),
+ ['::: nothing'],
+ [' ★ >{true}']);
+ checkPrettyPatch(Patch.assert(__).andThen(Patch.retract(__)),
+ ['::: nothing'],
+ [' ★ >{true}']);
+ checkPrettyPatch(Patch.assert(3).andThen(Patch.retract(3)),
+ ['::: nothing'],
+ [' 3 >{true}']);
+ checkPrettyPatch(Patch.sub([1, __]).andThen(Patch.unsub([1, 2])),
+ [' < $Observe < 1 ★ > > >{true}',
+ ' 2::: nothing'],
+ [' < $Observe < 1 2 > > >{true}']);
+ checkPrettyPatch(Patch.sub([__, 2]).andThen(Patch.unsub([1, 2])),
+ [' < $Observe < ★ 2 > > >{true}',
+ ' 1::: nothing'],
+ [' < $Observe < 1 2 > > >{true}']);
+ checkPrettyPatch(Patch.sub([__, __]).andThen(Patch.unsub([1, 2])),
+ [' < $Observe < ★ ★ > > >{true}',
+ ' 1 ★ > > >{true}',
+ ' 2::: nothing'],
+ [' < $Observe < 1 2 > > >{true}']);
+ });
+
+ it('works for longer chains of asserts and retracts', function () {
+ var rawPatch =
+ Patch.assert(1)
+ .andThen(Patch.retract(2))
+ .andThen(Patch.retract(3))
+ .andThen(Patch.assert(4))
+ .andThen(Patch.retract(99));
+ checkPrettyPatch(rawPatch,
+ [' 1 >{true}',
+ ' 4 >{true}'],
+ [' 2 >{true}',
+ ' 3 >{true}',
+ ' 99 >{true}']);
+
+ });
+});
+
+describe('patch lifting', function () {
+ it('should basically work', function () {
+ checkPrettyPatch(Patch.assert([1, 2]).lift(),
+ [' < $AtMeta < 1 2 > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2]).lift(),
+ [' < $AtMeta < $Observe < 1 2 > > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.assert([1, 2]).andThen(Patch.assert(Patch.atMeta([1, 2]))).lift(),
+ [' < $AtMeta < $AtMeta < 1 2 > > > >{true}',
+ ' 1 2 > > >{true}'],
+ ['::: nothing']);
+ });
+});
+
+describe('patch dropping', function () {
+ it('should basically work', function () {
+ checkPrettyPatch(Patch.assert([1, 2]).drop(),
+ ['::: nothing'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2]).drop(),
+ ['::: nothing'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.sub([1, 2], 1).drop(),
+ [' < $Observe < 1 2 > > >{true}'],
+ ['::: nothing']);
+ checkPrettyPatch(Patch.assert([1, 2]).andThen(Patch.assert(Patch.atMeta([1, 2]))).drop(),
+ [' < 1 2 > >{true}'],
+ ['::: nothing']);
+ });
+});
diff --git a/js/test/test-route.js b/js/test/test-route.js
new file mode 100644
index 0000000..569a6ca
--- /dev/null
+++ b/js/test/test-route.js
@@ -0,0 +1,527 @@
+"use strict";
+
+var Immutable = require('immutable');
+var expect = require('expect.js');
+var util = require('util');
+var r = require("../src/route.js");
+
+function checkPrettyTrie(m, expected) {
+ expect(r.prettyTrie(m)).to.equal(expected.join('\n'));
+}
+
+function checkTrieKeys(actual, expected) {
+ expect(actual.equals(Immutable.Set(expected).map(Immutable.List))).to.be(true);
+}
+
+describe("basic pattern compilation", function () {
+ var sAny = Immutable.Set(['mAny']);
+ var sAAny = Immutable.Set(['mAAny']);
+ var mAny = r.compilePattern(sAny, r.__);
+ var mAAny = r.compilePattern(sAAny, ['A', r.__]);
+
+ it("should print as expected", function () {
+ checkPrettyTrie(mAny, [' ★ >{["mAny"]}']);
+ checkPrettyTrie(mAAny, [' < "A" ★ > >{["mAAny"]}']);
+ });
+
+ describe("of wildcard", function () {
+ it("should match anything", function () {
+ expect(r.matchValue(mAny, 'hi')).to.eql(sAny);
+ expect(r.matchValue(mAny, ['A', 'hi'])).to.eql(sAny);
+ expect(r.matchValue(mAny, ['B', 'hi'])).to.eql(sAny);
+ expect(r.matchValue(mAny, ['A', [['hi']]])).to.eql(sAny);
+ });
+ });
+
+ describe("of A followed by wildcard", function () {
+ it("should match A followed by anything", function () {
+ expect(r.matchValue(mAAny, 'hi')).to.be(null);
+ expect(r.matchValue(mAAny, ['A', 'hi'])).to.eql(sAAny);
+ expect(r.matchValue(mAAny, ['B', 'hi'])).to.be(null);
+ expect(r.matchValue(mAAny, ['A', [['hi']]])).to.eql(sAAny);
+ });
+ });
+
+ it("should observe basic (in)equivalences", function () {
+ expect(Immutable.is(mAny, mAAny)).to.be(false);
+ expect(Immutable.is(mAny, mAny)).to.be(true);
+ expect(Immutable.is(mAAny, mAAny)).to.be(true);
+ });
+});
+
+describe("unions", function () {
+ it("should collapse common prefix wildcard", function () {
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 'A']),
+ r.compilePattern(Immutable.Set(['B']), [r.__, 'B'])),
+ [' < ★ "A" > >{["A"]}',
+ ' "B" > >{["B"]}']);
+ });
+
+ it("should unroll wildcard unioned with nonwildcard", function () {
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 'A']),
+ r.compilePattern(Immutable.Set(['W']), r.__)),
+ [' ★ >{["W"]}',
+ ' < ★ "A" ★...> >{["W"]}',
+ ' > >{["W","A"]}',
+ ' ★...> >{["W"]}',
+ ' > >{["W"]}',
+ ' > >{["W"]}']);
+ });
+
+ it("should properly multiply out", function () {
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4])),
+ [' < ★ 2 > >{["A"]}',
+ ' 1 2 > >{["A"]}',
+ ' 3 > >{["C"]}',
+ ' 3 2 > >{["A"]}',
+ ' 4 > >{["B"]}']);
+
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4])),
+ [' < 1 3 > >{["C"]}',
+ ' 3 4 > >{["B"]}']);
+
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3])),
+ [' < ★ 2 > >{["A"]}',
+ ' 1 2 > >{["A"]}',
+ ' 3 > >{["C"]}']);
+
+ checkPrettyTrie(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 2]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4])),
+ [' < ★ 2 > >{["A"]}',
+ ' 3 2 > >{["A"]}',
+ ' 4 > >{["B"]}']);
+ });
+
+ it("should correctly construct intermediate values", function () {
+ var MU = r.emptyTrie;
+ MU = r.union(MU, r.compilePattern(Immutable.Set(['A']), [r.__, 2]));
+ checkPrettyTrie(MU, [' < ★ 2 > >{["A"]}']);
+ MU = r.union(MU, r.compilePattern(Immutable.Set(['C']), [1, 3]));
+ checkPrettyTrie(MU, [' < ★ 2 > >{["A"]}',
+ ' 1 2 > >{["A"]}',
+ ' 3 > >{["C"]}']);
+ MU = r.union(MU, r.compilePattern(Immutable.Set(['B']), [3, 4]));
+ checkPrettyTrie(MU, [' < ★ 2 > >{["A"]}',
+ ' 1 2 > >{["A"]}',
+ ' 3 > >{["C"]}',
+ ' 3 2 > >{["A"]}',
+ ' 4 > >{["B"]}']);
+ });
+
+ it("should handle identical patterns with different pids", function () {
+ var m = r.union(r.compilePattern(Immutable.Set('B'), [2]),
+ r.compilePattern(Immutable.Set('C'), [3]));
+ checkPrettyTrie(m, [' < 2 > >{["B"]}',
+ ' 3 > >{["C"]}']);
+ m = r.union(r.compilePattern(Immutable.Set('A'), [2]), m);
+ checkPrettyTrie(m, [' < 2 > >{["A","B"]}',
+ ' 3 > >{["C"]}']);
+ });
+
+ it('should work with subtraction and wildcards', function () {
+ var x = r.compilePattern(Immutable.Set(["A"]), [r.__]);
+ var y = r.compilePattern(Immutable.Set(["A"]), ["Y"]);
+ var z = r.compilePattern(Immutable.Set(["A"]), ["Z"]);
+ var expected = [' < "Y"::: nothing',
+ ' ★ > >{["A"]}'];
+ checkPrettyTrie(r.subtract(r.union(x, z), y), expected);
+ checkPrettyTrie(r.union(r.subtract(x, y), z), expected);
+ });
+});
+
+describe("projections", function () {
+ describe("with picky structure", function () {
+ var proj = r.compileProjection(r._$("v", [[r.__]]));
+
+ it("should include things that match as well as wildcards", function () {
+ checkPrettyTrie(r.project(r.union(r.compilePattern(Immutable.Set(['A']), r.__),
+ r.compilePattern(Immutable.Set(['B']), [['b']])),
+ proj),
+ [' < < ★ > > >{["A"]}',
+ ' "b" > > >{["A","B"]}']);
+ });
+
+ it("should exclude things that lack the required structure", function () {
+ checkPrettyTrie(r.project(r.union(r.compilePattern(Immutable.Set(['A']), r.__),
+ r.compilePattern(Immutable.Set(['B']), ['b'])),
+ proj),
+ [' < < ★ > > >{["A"]}']);
+ });
+ });
+
+ describe("simple positional", function () {
+ var proj = r.compileProjection([r._$, r._$]);
+
+ it("should collapse common prefixes", function () {
+ checkPrettyTrie(r.project(r.union(r.compilePattern(Immutable.Set(['A']), [1, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4])),
+ proj),
+ [' 1 2 >{["A"]}',
+ ' 3 >{["C"]}',
+ ' 3 4 >{["B"]}']);
+ });
+
+ it("should yield a correct set of results", function () {
+ var u = r.union(r.compilePattern(Immutable.Set(['A']), [1, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4]));
+ checkTrieKeys(r.trieKeys(r.project(u, proj)), [[1, 2], [1, 3], [3, 4]]);
+ });
+ });
+});
+
+describe("subtraction", function () {
+ it("should basically work", function () {
+ checkPrettyTrie(r.subtract(r.compilePattern(true, r.__),
+ r.compilePattern(true, 3),
+ function (v1, v2) { return null; }),
+ [" ★ >{true}",
+ " 3::: nothing"]);
+ checkPrettyTrie(r.subtract(r.compilePattern(true, r.__),
+ r.compilePattern(true, [3]),
+ function (v1, v2) { return null; }),
+ [" ★ >{true}",
+ " < ★...> >{true}",
+ " > >{true}",
+ " 3 ★...> >{true}",
+ " >::: nothing"]);
+ });
+
+ it("should be idempotent if the subtrahend doesn't overlap the minuend", function () {
+ checkPrettyTrie(r.compilePattern(true, 1),
+ [' 1 >{true}']);
+ checkPrettyTrie(r.subtract(r.compilePattern(true, 1),
+ r.compilePattern(true, 2)),
+ [' 1 >{true}']);
+ checkPrettyTrie(r.subtract(r.compilePattern(true, 1),
+ r.compilePattern(true, 2),
+ function (v1, v2) { return null; }),
+ [' 1 >{true}']);
+ });
+});
+
+describe("subtract after union", function () {
+ var R1 = r.compilePattern(Immutable.Set(['A']), [r.__, "B"]);
+ var R2 = r.compilePattern(Immutable.Set(['B']), ["A", r.__]);
+ var R12 = r.union(R1, R2);
+
+ it("should have sane preconditions", function () { // Am I doing this right?
+ checkPrettyTrie(R1, [' < ★ "B" > >{["A"]}']);
+ checkPrettyTrie(R2, [' < "A" ★ > >{["B"]}']);
+ checkPrettyTrie(R12, [' < "A" "B" > >{["B","A"]}',
+ ' ★ > >{["B"]}',
+ ' ★ "B" > >{["A"]}']);
+ });
+
+ it("should yield the remaining ingredients of the union", function () {
+ expect(Immutable.is(r.subtract(R12, R1), R2)).to.be(true);
+ expect(Immutable.is(r.subtract(R12, R2), R1)).to.be(true);
+ expect(Immutable.is(r.subtract(R12, R1), R1)).to.be(false);
+ });
+});
+
+describe("trie equality", function () {
+ it("should not rely on object identity", function () {
+ expect(Immutable.is(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 'A']),
+ r.compilePattern(Immutable.Set(['B']), [r.__, 'B'])),
+ r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 'A']),
+ r.compilePattern(Immutable.Set(['B']), [r.__, 'B']))))
+ .to.be(true);
+ });
+
+ it("should respect commutativity of union", function () {
+ expect(Immutable.is(r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 'A']),
+ r.compilePattern(Immutable.Set(['B']), [r.__, 'B'])),
+ r.union(r.compilePattern(Immutable.Set(['B']), [r.__, 'B']),
+ r.compilePattern(Immutable.Set(['A']), [r.__, 'A']))))
+ .to.be(true);
+ });
+});
+
+describe("trieKeys on wild tries", function () {
+ var M = r.union(r.compilePattern(Immutable.Set(['A']), [r.__, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4]));
+
+ it("should yield null to signal an infinite result", function () {
+ expect(r.trieKeys(r.project(M, r.compileProjection([r._$, r._$])))).to.be(null);
+ });
+
+ it("should extract just the second array element successfully", function () {
+ checkTrieKeys(r.trieKeys(r.project(M, r.compileProjection([r.__, r._$]))),
+ [[2],[3],[4]]);
+ });
+
+ var M2 = r.project(M, r.compileProjection([r._$, r._$]));
+
+ it("should survive double-projection", function () {
+ checkTrieKeys(r.trieKeys(r.project(M2, r.compileProjection(r.__, r._$))),
+ [[2],[3],[4]]);
+ });
+
+ it("should survive embedding and reprojection", function () {
+ checkTrieKeys(r.trieKeys(r.project(r.compilePattern(true, [r.embeddedTrie(M2)]),
+ r.compileProjection([r.__, r._$]))),
+ [[2],[3],[4]]);
+ checkTrieKeys(r.trieKeys(r.project(r.compilePattern(true, [[r.embeddedTrie(M2)]]),
+ r.compileProjection([[r.__, r._$]]))),
+ [[2],[3],[4]]);
+ });
+});
+
+describe("trieKeys using multiple-values in projections", function () {
+ var M = r.union(r.compilePattern(Immutable.Set(['A']), [1, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4]));
+ var proj = r.compileProjection([r._$, r._$]);
+ var M2 = r.project(M, proj);
+
+ it("should be able to extract ordinary values", function () {
+ checkTrieKeys(r.trieKeys(M2), [[1,2],[1,3],[3,4]]);
+ });
+
+ it("should be able to be reprojected as a sequence of more than one value", function () {
+ checkTrieKeys(r.trieKeys(r.project(M2, r.compileProjection(r._$, r._$))),
+ [[1,2],[1,3],[3,4]]);
+ });
+
+ it("should be convertible into objects with $-indexed fields", function () {
+ expect(r.trieKeysToObjects(r.trieKeys(M2), proj).toArray())
+ .to.eql([{'$0': 3, '$1': 4}, {'$0': 1, '$1': 2}, {'$0': 1, '$1': 3}]);
+ expect(r.projectObjects(M, proj).toArray())
+ .to.eql([{'$0': 3, '$1': 4}, {'$0': 1, '$1': 2}, {'$0': 1, '$1': 3}]);
+ });
+});
+
+describe("trieKeys using multiple-values in projections, with names", function () {
+ var M = r.union(r.compilePattern(Immutable.Set(['A']), [1, 2]),
+ r.compilePattern(Immutable.Set(['C']), [1, 3]),
+ r.compilePattern(Immutable.Set(['B']), [3, 4]));
+
+ it("should yield named fields", function () {
+ expect(r.projectObjects(M, r.compileProjection([r._$("fst"), r._$("snd")])).toArray())
+ .to.eql([{'fst': 3, 'snd': 4}, {'fst': 1, 'snd': 2}, {'fst': 1, 'snd': 3}]);
+ });
+
+ it("should yield numbered fields where names are missing", function () {
+ expect(r.projectObjects(M, r.compileProjection([r._$, r._$("snd")])).toArray())
+ .to.eql([{'$0': 3, 'snd': 4}, {'$0': 1, 'snd': 2}, {'$0': 1, 'snd': 3}]);
+ expect(r.projectObjects(M, r.compileProjection([r._$("fst"), r._$])).toArray())
+ .to.eql([{'fst': 3, '$1': 4}, {'fst': 1, '$1': 2}, {'fst': 1, '$1': 3}]);
+ });
+});
+
+describe("complex erasure", function () {
+ var A = r.compilePattern(Immutable.Set(['A']), r.__);
+ var B = r.union(r.compilePattern(Immutable.Set(['B']), [[[["foo"]]]]),
+ r.compilePattern(Immutable.Set(['B']), [[[["bar"]]]]));
+ describe("after a union", function () {
+ var R0 = r.union(A, B);
+ var R1a = r.subtract(R0, B);
+ var R1b = r.subtract(R0, A);
+
+ it("should yield the other parts of the union", function () {
+ expect(Immutable.is(R1a, A)).to.be(true);
+ expect(Immutable.is(R1b, B)).to.be(true);
+ });
+ });
+});
+
+describe("embedding tries in patterns", function () {
+ var M1a =
+ r.compilePattern(Immutable.Set(['A']),
+ [1, r.embeddedTrie(r.compilePattern(Immutable.Set(['B']), [2, 3])), 4]);
+ var M1b =
+ r.compilePattern(Immutable.Set(['A']), [1, [2, 3], 4]);
+ var M2a =
+ r.compilePattern(Immutable.Set(['A']),
+ [r.embeddedTrie(r.compilePattern(Immutable.Set(['B']), [1, 2])),
+ r.embeddedTrie(r.compilePattern(Immutable.Set(['C']), [3, 4]))]);
+ var M2b =
+ r.compilePattern(Immutable.Set(['A']), [[1, 2], [3, 4]]);
+
+ it("should yield tries equivalent to the original patterns", function () {
+ expect(Immutable.is(M1a, M1b)).to.be(true);
+ expect(Immutable.is(M2a, M2b)).to.be(true);
+ });
+});
+
+describe("calls to matchPattern", function () {
+ it("should yield appropriately-named/-numbered fields", function () {
+ expect(r.matchPattern([1, 2, 3], [r.__, 2, r._$])).to.eql({'$0': 3, 'length': 1});
+ expect(r.matchPattern([1, 2, 3], [r.__, 2, r._$("three")])).to.eql({'three': 3, 'length': 1});
+ expect(r.matchPattern([1, 2, 3], [r._$, 2, r._$("three")]))
+ .to.eql({'$0': 1, 'three': 3, 'length': 2});
+ expect(r.matchPattern([1, 2, 3], [r._$("one"), 2, r._$]))
+ .to.eql({'one': 1, '$1': 3, 'length': 2});
+ expect(r.matchPattern([1, 2, 3], [r._$("one"), 2, r._$("three")]))
+ .to.eql({'one': 1, 'three': 3, 'length': 2});
+ });
+
+ it("should fail on value mismatch", function () {
+ expect(r.matchPattern([1, 2, 3], [r.__, 999, r._$("three")])).to.be(null);
+ });
+
+ it("should fail on array length mismatch", function () {
+ expect(r.matchPattern([1, 2, 3], [r.__, 2, r._$("three"), 4])).to.be(null);
+ });
+
+ it("matches substructure", function () {
+ expect(r.matchPattern([1, [2, 999], 3], [r._$("one"), r._$(null, [2, r.__]), r._$("three")]))
+ .to.eql({ one: 1, '$1': [ 2, 999 ], three: 3, length: 3 });
+ expect(r.matchPattern([1, [2, 999], 3], [r._$("one"), r._$("two", [2, r.__]), r._$("three")]))
+ .to.eql({ one: 1, two: [ 2, 999 ], three: 3, length: 3 });
+ expect(r.matchPattern([1, [999, 2], 3], [r._$("one"), r._$(null, [2, r.__]), r._$("three")]))
+ .to.be(null);
+ expect(r.matchPattern([1, [999, 2], 3], [r._$("one"), r._$("two", [2, r.__]), r._$("three")]))
+ .to.be(null);
+ });
+
+ it("matches nested captures", function () {
+ expect(r.matchPattern([1, [2, 999], 3], [r._$("one"), r._$(null, [2, r._$]), r._$("three")]))
+ .to.eql({ one: 1, '$2': 999, '$1': [ 2, 999 ], three: 3, length: 4 });
+ expect(r.matchPattern([1, [2, 999], 3], [r._$("one"), r._$("two", [2, r._$]), r._$("three")]))
+ .to.eql({ one: 1, '$2': 999, two: [ 2, 999 ], three: 3, length: 4 });
+ });
+
+ it("matches structures", function () {
+ var ctor = r.makeStructureConstructor('foo', ['bar', 'zot']);
+ expect(r.matchPattern(ctor(123, 234), ctor(r._$("bar"), r._$("zot"))))
+ .to.eql({ bar: 123, zot: 234, length: 2 });
+ expect(r.matchPattern(["foo", 123, 234], ctor(r._$("bar"), r._$("zot"))))
+ .to.eql({ bar: 123, zot: 234, length: 2 });
+ expect(r.matchPattern(ctor(123, 234), ["foo", r._$("bar"), r._$("zot")]))
+ .to.eql({ bar: 123, zot: 234, length: 2 });
+ });
+});
+
+describe("Projection with no captures", function () {
+ it("should yield the empty sequence when there's a match", function () {
+ var emptySequence = [' >{["A"]}'];
+
+ checkPrettyTrie(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection(r.__)),
+ emptySequence);
+ checkPrettyTrie(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection([r.__, r.__])),
+ emptySequence);
+ checkPrettyTrie(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection(["X", r.__])),
+ emptySequence);
+ });
+
+ it("should yield the empty trie when there's no match", function () {
+ expect(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection(["Y", r.__]))).to.be(r.emptyTrie);
+ });
+
+ it("should yield nonempty sequences when there are captures after all", function () {
+ checkPrettyTrie(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection([r.__, r._$])),
+ [' ★ >{["A"]}']);
+ checkPrettyTrie(r.project(r.compilePattern(Immutable.Set(['A']), ["X", r.__]),
+ r.compileProjection([r._$, r._$])),
+ [' "X" ★ >{["A"]}']);
+ });
+});
+
+describe('trieStep', function () {
+ it('should expand wildcard when given SOA', function () {
+ expect(Immutable.is(r.trieStep(r.compilePattern(true, r.__), r.SOA),
+ r._testing.rwildseq(r._testing.rseq(r.EOA, r._testing.rsuccess(true)))))
+ .to.be(true);
+ });
+});
+
+describe('intersect', function () {
+ it('should compute no-op patch limits properly', function () {
+ var x = r.compilePattern(Immutable.Set([0]), ["fieldContents", r.__, r.__]);
+ var y = r.compilePattern(Immutable.Set([0]), ["fieldContents", "initial", 7]);
+ checkPrettyTrie(r.subtract(x, y), [
+ ' < "fieldContents" ★ ★ > >{[0]}',
+ ' "initial" ★ > >{[0]}',
+ ' 7::: nothing']);
+ checkPrettyTrie(r.intersect(r.subtract(x, y), y), ['::: nothing']);
+ });
+});
+
+describe('triePruneBranch', function () {
+ it('should not affect empty trie', function () {
+ checkPrettyTrie(r.triePruneBranch(r.emptyTrie, Immutable.List([])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(r.emptyTrie, Immutable.List([r.SOA])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(r.emptyTrie, Immutable.List(["x"])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(r.emptyTrie, Immutable.List([r.SOA, "x"])), ['::: nothing']);
+ });
+
+ it('should leave a hole in a full trie', function () {
+ var full = r.compilePattern(true, r.__);
+ checkPrettyTrie(r.triePruneBranch(full, Immutable.List([])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(full, Immutable.List([r.SOA])),
+ [' ★ >{true}',
+ ' <::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(full, Immutable.List(["x"])),
+ [' ★ >{true}',
+ ' "x"::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(full, Immutable.List([r.SOA, "x"])),
+ [' ★ >{true}',
+ ' < ★...> >{true}',
+ ' > >{true}',
+ ' "x"::: nothing']);
+ });
+
+ it('should prune in a finite tree and leave the rest alone', function () {
+ var A = r.compilePattern(true, ["y"])
+ var B = r.union(r.compilePattern(true, ["x"]), A);
+ var C = r.union(r.compilePattern(true, "z"), B);
+ checkPrettyTrie(r.triePruneBranch(A, Immutable.List([])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(B, Immutable.List([])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(C, Immutable.List([])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(A, Immutable.List(["z"])), [' < "y" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(B, Immutable.List(["z"])), [' < "x" > >{true}',
+ ' "y" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(C, Immutable.List(["z"])), [' < "x" > >{true}',
+ ' "y" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(A, Immutable.List([r.SOA])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(B, Immutable.List([r.SOA])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(C, Immutable.List([r.SOA])), [' "z" >{true}']);
+ checkPrettyTrie(r.triePruneBranch(A, Immutable.List([r.SOA, "x"])), [' < "y" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(B, Immutable.List([r.SOA, "x"])), [' < "y" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(C, Immutable.List([r.SOA, "x"])), [' < "y" > >{true}',
+ ' "z" >{true}']);
+ checkPrettyTrie(r.triePruneBranch(A, Immutable.List([r.SOA, "y"])), ['::: nothing']);
+ checkPrettyTrie(r.triePruneBranch(B, Immutable.List([r.SOA, "y"])), [' < "x" > >{true}']);
+ checkPrettyTrie(r.triePruneBranch(C, Immutable.List([r.SOA, "y"])), [' < "x" > >{true}',
+ ' "z" >{true}']);
+ });
+});
+
+describe('makeStructureConstructor', function () {
+ it('should produce the right metadata', function () {
+ var ctor = r.makeStructureConstructor('foo', ['bar', 'zot']);
+ var inst = ctor(123, 234);
+ expect(inst.$SyndicateMeta$.label).to.equal('foo');
+ expect(inst.$SyndicateMeta$.arguments).to.eql(['bar', 'zot']);
+ });
+
+ it('should produce the right instance data', function () {
+ var ctor = r.makeStructureConstructor('foo', ['bar', 'zot']);
+ var inst = ctor(123, 234);
+ expect(inst.bar).to.equal(123);
+ expect(inst.zot).to.equal(234);
+ });
+
+ it('should work with compilePattern and matchValue', function () {
+ var sA = Immutable.Set(["A"]);
+ var ctor = r.makeStructureConstructor('foo', ['bar', 'zot']);
+ var inst = ctor(123, 234);
+ var x = r.compilePattern(sA, ctor(123, r.__));
+ checkPrettyTrie(x, [' < "foo" 123 ★ > >{["A"]}']);
+ expect(r.matchValue(x, ctor(123, 234))).to.eql(sA);
+ expect(r.matchValue(x, ctor(234, 123))).to.eql(null);
+ });
+});
diff --git a/js/test/test-syndicate.js b/js/test/test-syndicate.js
new file mode 100644
index 0000000..823a6b1
--- /dev/null
+++ b/js/test/test-syndicate.js
@@ -0,0 +1,152 @@
+"use strict";
+
+var expect = require('expect.js');
+var Immutable = require('immutable');
+
+var Syndicate = require('../src/main.js');
+var Network = Syndicate.Network;
+var Patch = Syndicate.Patch;
+
+var __ = Syndicate.__;
+var _$ = Syndicate._$;
+
+function configurationTrace(bootConfiguration) {
+ var eventLog = [];
+ function trace(item) {
+ eventLog.push(item);
+ }
+
+ var G = new Syndicate.Ground(function () {
+ bootConfiguration(trace);
+ });
+
+ while (G.step()) {
+ // do nothing until G becomes inert
+ }
+
+ return eventLog;
+}
+
+function traceEvent(trace) {
+ return function(item) {
+ trace((item.type === "stateChange") ? item.patch.pretty() : item);
+ }
+}
+
+function checkTrace(bootConfiguration, expected) {
+ expect(configurationTrace(bootConfiguration)).to.eql(expected);
+}
+
+describe("configurationTrace", function() {
+ describe("with an inert configuration", function () {
+ it("should yield an empty trace", function () {
+ checkTrace(function (trace) {}, []);
+ });
+ });
+
+ describe("with a single trace in an inert configuration", function () {
+ it("should yield that trace", function () {
+ checkTrace(function (trace) { trace(1) }, [1]);
+ });
+ });
+
+ describe("with some traced communication", function () {
+ it("should yield an appropriate trace", function () {
+ checkTrace(function (trace) {
+ Network.spawn({
+ boot: function () { return Syndicate.sub(__); },
+ handleEvent: traceEvent(trace)
+ });
+ Network.send(123);
+ Network.send(234);
+ }, ['<<<<<<<< Removed:\n'+
+ '::: nothing\n'+
+ '======== Added:\n'+
+ ' < $Observe ★ > >{[0]}\n'
+ +' >::: nothing\n'+
+ '>>>>>>>>',
+ Syndicate.message(123),
+ Syndicate.message(234)]);
+ });
+ });
+});
+
+describe("nonempty initial routes", function () {
+ it("should be immediately signalled to the process", function () {
+ // Specifically, no Syndicate.updateRoutes([]) first.
+ checkTrace(function (trace) {
+ Network.spawn({
+ boot: function () { return Patch.assert(["A", __]); },
+ handleEvent: function (e) {}
+ });
+ Network.spawn({
+ boot: function () { return Patch.sub(["A", __]); },
+ handleEvent: traceEvent(trace)
+ });
+ }, ['<<<<<<<< Removed:\n'+
+ '::: nothing\n'+
+ '======== Added:\n'+
+ ' < "A" ★ > >{[1]}\n'+
+ '>>>>>>>>']);
+ });
+});
+
+describe("nested actor with an echoey protocol", function () {
+ it("shouldn't see an echoed assertion", function () {
+ checkTrace(function (trace) {
+ Network.spawn(new Network(function () {
+ Network.spawn({
+ boot: function () {
+ Network.stateChange(Patch.retract("X", 1)); // happens after subs on next line!
+ return Patch.sub("X", 1).andThen(Patch.assert("X", 1));
+ },
+ handleEvent: traceEvent(trace)
+ });
+ }));
+ }, ['<<<<<<<< Removed:\n'+
+ '::: nothing\n'+
+ '======== Added:\n'+
+ ' < $AtMeta "X" > >{[0]}\n'+
+ '>>>>>>>>',
+ '<<<<<<<< Removed:\n'+
+ ' < $AtMeta "X" > >{[0]}\n'+
+ '======== Added:\n'+
+ '::: nothing\n'+
+ '>>>>>>>>']);
+ })
+ it("shouldn't see an echoed message", function () {
+ checkTrace(function (trace) {
+ Network.spawn(new Network(function () {
+ Network.spawn({
+ boot: function () {
+ Network.send("X", 1); // happens after subs on next line!
+ return Patch.sub("X", 1);
+ },
+ handleEvent: traceEvent(trace)
+ });
+ }));
+ }, [Syndicate.message(Patch.atMeta("X"))]);
+ });
+ it("shouldn't see an echoed assertion", function () {
+ });
+});
+
+// describe("actor with nonempty initial routes", function () {
+// it("shouldn't see initial empty conversational context", function () {
+// checkTrace(function (trace) {
+// Network.spawn({
+// boot: function () { return [pub(["A", __])] },
+// handleEvent: function (e) {
+// Network.spawn(new Actor(function () {
+// Actor.observeAdvertisers(
+// function () { return ["A", __] },
+// { presence: "isPresent" },
+// function () {
+// trace(["isPresent", this.isPresent]);
+// });
+// }));
+// }
+// });
+// }, [["isPresent", true]]);
+// });
+// });
diff --git a/js/third-party/jquery-2.2.0.min.js b/js/third-party/jquery-2.2.0.min.js
new file mode 100644
index 0000000..06ac263
--- /dev/null
+++ b/js/third-party/jquery-2.2.0.min.js
@@ -0,0 +1,4 @@
+/*! jQuery v2.2.0 | (c) jQuery Foundation | jquery.org/license */
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