new “JavaScript function” primitive

Go figure…

3 files changed, 25 insertions, 2 deletions

diff --git a/history.txt b/history.txt
index 9f21f79..f233284 100755
--- a/history.txt
+++ b/history.txt
@@ -2228,3 +2228,7 @@ ______
 * Objects: fixed “lost sprites bug” - ensure duplicated sprites keep wearing their current costume through save and re-load
 * GUI, Objects: improve unique sprite- and costume names
 * Threads: Display “empty” Contexts (e.g. continuations) as empty rings
+
+140725
+------
+* Objects, Threads: new “JavaScript function” primitive. Go figure…
diff --git a/objects.js b/objects.js
index 2b04eb4..f9908ef 100644
--- a/objects.js
+++ b/objects.js
@@ -125,7 +125,7 @@ PrototypeHatBlockMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.objects = '2014-July-24';
+modules.objects = '2014-July-25';
 
 var SpriteMorph;
 var StageMorph;
@@ -1024,6 +1024,11 @@ SpriteMorph.prototype.initBlocks = function () {
             spec: 'split %s by %delim',
             defaults: [localize('hello') + ' ' + localize('world'), " "]
         },
+        reportJSFunction: { // experimental
+            type: 'reporter',
+            category: 'operators',
+            spec: 'JavaScript function ( %mult%s ) { %code }'
+        },
         reportTypeOf: { // only in dev mode for debugging
             dev: true,
             type: 'reporter',
@@ -1919,6 +1924,8 @@ SpriteMorph.prototype.blockTemplates = function (category) {
         blocks.push('-');
         blocks.push(block('reportIsA'));
         blocks.push(block('reportIsIdentical'));
+        blocks.push('-');
+        blocks.push(block('reportJSFunction'));
 
     // for debugging: ///////////////
 
@@ -5000,6 +5007,8 @@ StageMorph.prototype.blockTemplates = function (category) {
         blocks.push('-');
         blocks.push(block('reportIsA'));
         blocks.push(block('reportIsIdentical'));
+        blocks.push('-');
+        blocks.push(block('reportJSFunction'));
 
     // for debugging: ///////////////
 
diff --git a/threads.js b/threads.js
index 06beebc..d72d36a 100644
--- a/threads.js
+++ b/threads.js
@@ -83,7 +83,7 @@ ArgLabelMorph, localize, XML_Element, hex_sha512*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.threads = '2014-July-24';
+modules.threads = '2014-July-25';
 
 var ThreadManager;
 var Process;
@@ -741,6 +741,13 @@ Process.prototype.reifyPredicate = function (topBlock, parameterNames) {
     return this.reify(topBlock, parameterNames);
 };
 
+Process.prototype.reportJSFunction = function (parmNames, body) {
+    return Function.apply(
+        Object.create(Function.prototype),
+        parmNames.asArray().concat([body])
+    );
+};
+
 Process.prototype.doRun = function (context, args, isCustomBlock) {
     return this.evaluate(context, args, true, isCustomBlock);
 };
@@ -751,6 +758,9 @@ Process.prototype.evaluate = function (
     isCommand
 ) {
     if (!context) {return null; }
+    if (context instanceof Function) {
+        return context.apply(this.homeContext.receiver, args.asArray());
+    }
     if (context.isContinuation) {
         return this.runContinuation(context, args);
     }