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/**
* An implementation of an 'enzymatic programming' paradigm.
*/
DEBUG = true;
DEBUG = false;
Substrate = function(name_) {
this.name_ = name_;
this.zymes = {};
this.currUid = 1;
};
Substrate.prototype = {
addItem: function(item, targetZyme) {
if (targetZyme == '/dev/null') return;
if (targetZyme == '/dev/stdout') {
this.results.push(item);
return;
}
this.zymes[targetZyme].inbox.push(item);
},
addItems: function(items, targetZyme) {
if (targetZyme == '/dev/null') return;
if (targetZyme == '/dev/stdout') {
this.results = this.results.concat(items);
return;
}
this.zymes[targetZyme].inbox = this.zymes[targetZyme].inbox.concat(items);
},
checkInbox: function(zyme) {
var items = zyme.inbox;
for (var i = 0; i < items.length; i++) {
var item = items[i];
if (!item.__uid__) {
item.__uid__ = this.currUid;
this.currUid ++;
}
}
zyme.inbox = [];
zyme.items = zyme.items.concat(items);
},
addZyme: function(name_, zyme) {
assert(name_ && zyme);
zyme.name_ = name_;
zyme.items = [];
zyme.inbox = [];
zyme.forwardItem = bind(this, this.addItem);
zyme.forwardItems = bind(this, this.addItems);
this.zymes[name_] = zyme;
if (!zyme.process) zyme.process = Zyme.prototype.process;
return zyme;
},
solve: function() {
dprint('enzymatic', "// Solving " + this.name_ + "...");
var startTime = Date.now();
var midTime = startTime;
var that = this;
function midComment(force) {
var curr = Date.now();
if (curr - midTime > 1000 || force) {
dprint('enzymatic', '// Working on ' + that.name_ + ', so far ' + ((curr-startTime)/1000).toString().substr(0,10) + ' seconds.');
midTime = curr;
}
}
function finalComment() {
dprint('enzymatic', '// Completed ' + that.name_ + ' in ' + ((Date.now() - startTime)/1000).toString().substr(0,10) + ' seconds.');
}
var finalResult = null;
this.results = [];
var finished = false;
var that = this;
while (!finished) {
dprint('enzymatic', "Cycle start, items: ");// + values(this.zymes).map(function(zyme) zyme.items).reduce(function(x,y) x+y, 0));
var hadProcessing = false;
values(this.zymes).forEach(function(zyme) {
midComment();
that.checkInbox(zyme);
if (zyme.items.length == 0) return;
var inputs = zyme.items.slice(0);
var outputs;
var currResultCount = that.results.length;
try {
dprint('enzymatic', 'Processing using ' + zyme.name_ + ': ' + inputs.length);
zyme.items = []; // More may be added in process(); we'll get to them next time
outputs = zyme.process(inputs);
dprint('enzymatic', 'New results: ' + (outputs.length + that.results.length - currResultCount) + ' out of ' + (that.results.length + outputs.length));
} catch (e) {
//print("Exception, current selected are: " + inputs.map(dump).join('\n\n'));
print("Stack: " + new Error().stack);
throw e;
}
hadProcessing = true;
if (outputs) {
if (outputs.length === 1 && outputs[0].__finalResult__) {
if (DEBUG) print("Solving complete: __finalResult__");
delete outputs[0].__finalResult__; // Might recycle this
delete outputs[0].__uid__;
finalComment();
finished = true;
finalResult = outputs[0];
} else {
outputs.forEach(function(output) { delete output.tokens }); // clean up tokens to save memory
that.results = that.results.concat(outputs);
}
}
});
if (!hadProcessing) {
if (DEBUG) print("Solving complete: no remaining items");
finalComment();
this.results.forEach(function(output) {
delete output.__result__; // Might recycle these
delete output.__uid__;
});
return this.results;
}
if (finalResult) {
return finalResult;
}
midComment();
}
}
};
Zyme = function() { };
Zyme.prototype = {
process: function(items) {
var ret = [];
for (var i = 0; i < items.length; i++) {
var item = items[i];
try {
var outputs = this.processItem(item);
if (outputs) {
ret = ret.concat(outputs);
}
} catch (e) {
print("Exception in process(), current item is: " + dump(item));
throw e;
}
}
return ret;
},
processPairs: function(items, func) {
var ret = [];
for (var i = 0; i < items.length; i += 2) {
try {
ret = ret.concat(func(items[i], items[i+1]));
} catch (e) {
print("Exception in processPairs(), current items are: " + dump(items[i]) + ' :::: ' + dump(items[i+1]));
throw e;
}
}
return ret;
}
};
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