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@scion-scxml/core

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StateCharts Interpretation and Optimization eNgine (SCION) CORE is an implementation of Statecharts in JavaScript.

gitlab.com/scion-scxml/core

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e.opts.Set(C(e.opts.snapshot[0],e._model.$idToStateMap)),e._historyValue=D(e.opts.snapshot[1],e._model.$idToStateMap),e._isInFinalState=e.opts.snapshot[2],e._model.$deserializeDatamodel(e.opts.snapshot[3]),e._internalEventQueue=e.opts.snapshot[4]):(e._configuration=new e.opts.Set,e._historyValue={},e._isInFinalState=!1),c.EVENTS.forEach(function(a){this.on(a,this._log.bind(this,a))},e),b.exports.emit("new",e),e}return i(c,a),m(c,[{key:"cancel",value:function(){delete this.opts.parentSession,this._isInFinalState||(this._isInFinalState=!0,this._log("session cancelled "+this.opts.invokeid),this._exitInterpreter(null))}},{key:"_exitInterpreter",value:function(a){var b=this;this._cancelAllDelayedSends();for(var c=this._getFullConfiguration().sort(A),d=0,e=c.length;d<e;d++){var f=c[d];if(void 0!==f.onExit)for(var g=0,h=f.onExit.length;g<h;g++)for(var i=f.onExit[g],j=0,k=i.length;j<k;j++){var l=i[j];try{l.call(this._scriptingContext,null)}catch(m){this._handleError(m,l);break}}f.invokes&&f.invokes.forEach(function(a){b._scriptingContext.cancelInvoke(a.id)}),"final"===f.$type&&"scxml"===f.parent.$type&&(this.opts.parentSession&&this._scriptingContext.send({target:"#_parent",name:"done.invoke."+this.opts.invokeid,data:f.donedata&&f.donedata.call(this._scriptingContext,a)}),this.opts.sessionRegistry["delete"](this.opts.sessionid),this.emit("onExitInterpreter",a))}}},{key:"start",value:function(){return this._initStart(),this._performBigStep(),this.getConfiguration()}},{key:"startAsync",value:function(a){a=this._initStart(a),this.genAsync(null,a)}},{key:"_initStart",value:function(a){var b=this;return"function"!=typeof a&&(a=j),this._log("performing initial big step"),this._model.initialRef.forEach(function(a){return b._configuration.add(a)}),a}},{key:"getConfiguration",value:function(){return this._configuration.iter().map(function(a){return a.id})}},{key:"_getFullConfiguration",value:function(){return this._configuration.iter().map(function(a){return[a].concat(s.getAncestors(a))},this).reduce(function(a,b){return a.concat(b)},[]).reduce(function(a,b){return a.indexOf(b)>-1?a:a.concat(b)},[])}},{key:"getFullConfiguration",value:function(){return this._getFullConfiguration().map(function(a){return a.id})}},{key:"isIn",value:function(a){return this.getFullConfiguration().indexOf(a)>-1}},{key:"isFinal",value:function(){return this._isInFinalState}},{key:"_performBigStep",value:function(a){var b=void 0,c=void 0,d=void 0,e=void 0,f=this._startBigStep(a),g=k(f,4);for(d=g[0],e=g[1],c=g[2],b=g[3];c;){var h=this._selectTransitionsAndPerformSmallStep(b,e,d),i=k(h,2);b=i[0],c=i[1]}this._finishBigStep(b,e,d)}},{key:"_selectTransitionsAndPerformSmallStep",value:function(a,b,c){var d=this._selectTransitions(a,!0);if(d.isEmpty()){var e=this._internalEventQueue.shift();e&&(a=e,d=this._selectTransitions(a,!1))}if(!d.isEmpty()){this.emit("onSmallStepBegin",a);var f=void 0,g=void 0,h=this._performSmallStep(a,d),i=k(h,2);f=i[0],g=i[1],f&&f.forEach(function(a){return c.add(a)}),g&&g.forEach(function(a){return b.add(a)}),this.emit("onSmallStepEnd",a)}var j=!d.isEmpty()||this._internalEventQueue.length;return[a,j]}},{key:"_startBigStep",value:function(a){var b=this;this.emit("onBigStepBegin",a),this._configuration.iter().forEach(function(c){c.invokes&&c.invokes.forEach(function(c){c.autoforward&&b._scriptingContext.send({target:"#_"+c.id,name:a.name,data:a.data}),c.id===a.invokeid&&c.finalize&&c.finalize.forEach(function(c){return b._evaluateAction(a,c)})})}),a&&this._internalEventQueue.push(a);var c=new Set,d=new Set,e=!0,f=a;return[d,c,e,f]}},{key:"_finishBigStep",value:function(a,b,c,d){var e=this,g=Array.from(new Set([].concat(f(b)).filter(function(a){return a.invokes&&!c.has(a)}))).sort(z);g.forEach(function(b){b.invokes.forEach(function(b){return e._evaluateAction(a,b)})}),c.forEach(function(a){a.invokes&&a.invokes.forEach(function(a){e._scriptingContext.cancelInvoke(a.id)})}),this._isInFinalState=this._configuration.iter().every(function(a){return a.typeEnum===J}),this._isInFinalState&&this._exitInterpreter(a),this.emit("onBigStepEnd",a),d&&d(void 0,this.getConfiguration())}},{key:"_cancelAllDelayedSends",value:function(){var a=!0,b=!1,c=void 0;try{for(var d,e=this._scriptingContext._timeouts[Symbol.iterator]();!(a=(d=e.next()).done);a=!0){var f=d.value;f.sendOptions.delay&&(this._log("cancelling delayed send",f),clearTimeout(f.timeoutHandle),this._scriptingContext._timeouts["delete"](f))}}catch(g){b=!0,c=g}finally{try{!a&&e["return"]&&e["return"]()}finally{if(b)throw c}}Object.keys(this._scriptingContext._timeoutMap).forEach(function(a){delete this._scriptingContext._timeoutMap[a]},this)}},{key:"_performBigStepAsync",value:function(a,b){function c(a){this.emit(a);var i=this._selectTransitionsAndPerformSmallStep(d,h,g),j=k(i,2);d=j[0],f=j[1],f?(this.emit("onBigStepSuspend"),e(c.bind(this,"onBigStepResume"))):this._finishBigStep(d,h,g,b)}var d=void 0,f=void 0,g=void 0,h=void 0,i=this._startBigStep(a),j=k(i,4);g=j[0],h=j[1],f=j[2],d=j[3],c.call(this,"onBigStepBegin")}},{key:"_performSmallStep",value:function(a,b){this._log("selecting transitions with currentEvent",a),this._log("selected transitions",b);var c=void 0,d=void 0;if(!b.isEmpty()){var e=new this.opts.Set(b.iter().filter(u));c=this._exitStates(a,e),this._executeTransitions(a,b),d=this._enterStates(a,e),this._log("new configuration ",this._configuration)}return[c,d]}},{key:"_exitStates",value:function(a,b){var c=void 0,d=void 0,e=this._getStatesExited(b),f=k(e,2);c=f[0],d=f[1],this._log("exiting states");for(var g=0,h=d.length;g<h;g++){var i=d[g];if(i.isAtomic&&this._configuration.remove(i),this._log("exiting ",i.id),this.emit("onExit",i.id),void 0!==i.onExit)for(var j=0,l=i.onExit.length;j<l;j++)for(var m=i.onExit[j],n=0,o=m.length;n<o;n++){var p=m[n];try{p.call(this._scriptingContext,a)}catch(q){this._handleError(q,p);break}}var r;if(i.historyRef){var s=!0,t=!1,u=void 0;try{for(var v,w=i.historyRef[Symbol.iterator]();!(s=(v=w.next()).done);s=!0){var x=v.value;r=x.isDeep?function(a){return a.typeEnum===E&&i.descendants.indexOf(a)>-1}:function(a){return a.parent===i},this._historyValue[x.id]=d.filter(r)}}catch(y){t=!0,u=y}finally{try{!s&&w["return"]&&w["return"]()}finally{if(t)throw u}}}}return d}},{key:"_getStatesExited",value:function(a){for(var b=new this.opts.Set,c=new this.opts.Set,d=a.iter(),e=0,f=d.length;e<f;e++)for(var g=d[e],h=g.scope,i=h.descendants,j=this._configuration.iter(),k=0,l=j.length;k<l;k++){var m=j[k];if(i.indexOf(m)>-1){c.add(m),b.add(m);for(var n=s.getAncestors(m,h),o=0,p=n.length;o<p;o++)b.add(n[o])}}var q=b.iter().sort(A);return[c,q]}},{key:"_executeTransitions",value:function(a,b){var c=b.iter().sort(v);this._log("executing transitition actions");for(var d=0,e=c.length;d<e;d++){var f=c[d],g=f.targets&&f.targets.map(function(a){return a.id});if(this.emit("onTransition",f.source.id,g,f.source.transitions.indexOf(f)),void 0!==f.onTransition)for(var h=0,i=f.onTransition.length;h<i;h++){var j=f.onTransition[h];try{j.call(this._scriptingContext,a)}catch(k){this._handleError(k,j);break}}}}},{key:"_enterStates",value:function(a,b){var c=this;this._log("entering states");var d=new Set,e=new Set,f={};this._computeEntrySet(b,d,e,f),d=Array.from(d).sort(z),this._log("statesEntered ",d);for(var g=0,h=d.length;g<h;g++){var i=d[g];if(i.isAtomic&&this._configuration.add(i),this._log("entering",i.id),this.emit("onEntry",i.id),void 0!==i.onEntry)for(var j=0,k=i.onEntry.length;j<k;j++)for(var l=i.onEntry[j],m=0,n=l.length;m<n;m++){var o=l[m];try{o.call(this._scriptingContext,a)}catch(p){this._handleError(p,o);break}}if(e.has(i)){var q=!0,r=!1,s=void 0;try{for(var t,u=i.initialRef[Symbol.iterator]();!(q=(t=u.next()).done);q=!0){var v=t.value;if(this.emit("onDefaultEntry",v.id),v.typeEnum===I){var w=v.transitions[0];if(void 0!==w.onTransition){this._log("executing initial transition content for initial state of parent state",i.id);for(var x=0,y=w.onTransition.length;x<y;x++){var A=w.onTransition[x];try{A.call(this._scriptingContext,a)}catch(p){this._handleError(p,A);break}}}}}}catch(B){r=!0,s=B}finally{try{!q&&u["return"]&&u["return"]()}finally{if(r)throw s}}}if(f[i.id]){var C=f[i.id];if(void 0!==C.onTransition){this._log("executing history transition content for history state of parent state",i.id);for(var x=0,y=C.onTransition.length;x<y;x++){var D=C.onTransition[x];try{D.call(this._scriptingContext,a)}catch(p){this._handleError(p,D);break}}}}}for(var g=0,h=d.length;g<h;g++){var i=d[g];if(i.typeEnum===J){var E=i.parent,F=E.parent;this._internalEventQueue.push({name:"done.state."+E.id,data:i.donedata&&i.donedata.call(this._scriptingContext,a)}),F&&F.typeEnum===G&&F.states.every(function(a){return c.isInFinalState(a)})&&this._internalEventQueue.push({name:"done.state."+F.id})}}return d}},{key:"_getEffectiveTargetStates",value:function(a){var b=new Set,c=!0,d=!1,e=void 0;try{for(var g,h=a.targets[Symbol.iterator]();!(c=(g=h.next()).done);c=!0){var i=g.value;i.typeEnum===H?i.id in this._historyValue?this._historyValue[i.id].forEach(function(a){return b.add(a)}):[].concat(f(this._getEffectiveTargetStates(i.transitions[0]))).forEach(function(a){return b.add(a)}):b.add(i)}}catch(j){d=!0,e=j}finally{try{!c&&h["return"]&&h["return"]()}finally{if(d)throw e}}return b}},{key:"_computeEntrySet",value:function(a,b,c,d){var e=!0,f=!1,g=void 0;try{for(var h,i=a.iter()[Symbol.iterator]();!(e=(h=i.next()).done);e=!0){var j=h.value,k=!0,l=!1,m=void 0;try{for(var n,o=j.targets[Symbol.iterator]();!(k=(n=o.next()).done);k=!0){var p=n.value;this._addDescendantStatesToEnter(p,b,c,d)}}catch(q){l=!0,m=q}finally{try{!k&&o["return"]&&o["return"]()}finally{if(l)throw m}}var r=j.scope,s=!0,t=!1,u=void 0;try{for(var v,w=this._getEffectiveTargetStates(j)[Symbol.iterator]();!(s=(v=w.next()).done);s=!0){var x=v.value;this._addAncestorStatesToEnter(x,r,b,c,d)}}catch(q){t=!0,u=q}finally{try{!s&&w["return"]&&w["return"]()}finally{if(t)throw u}}}}catch(q){f=!0,g=q}finally{try{!e&&i["return"]&&i["return"]()}finally{if(f)throw g}}}},{key:"_computeExitSet",value:function(a){var b=new Set,c=!0,d=!1,e=void 0;try{for(var f,g=a[Symbol.iterator]();!(c=(f=g.next()).done);c=!0){var h=f.value;if(h.targets){var i=h.scope,j=!0,k=!1,l=void 0;try{for(var m,n=this._getFullConfiguration()[Symbol.iterator]();!(j=(m=n.next()).done);j=!0){var o=m.value;s.isDescendant(o,i)&&b.add(o)}}catch(p){k=!0,l=p}finally{try{!j&&n["return"]&&n["return"]()}finally{if(k)throw l}}}}}catch(p){d=!0,e=p}finally{try{!c&&g["return"]&&g["return"]()}finally{if(d)throw e}}return b}},{key:"_addAncestorStatesToEnter",value:function(a,b,c,d,e){var g=this,h=function(a){if(a.typeEnum===G){var b=!0,h=!1,i=void 0;try{for(var j,k=function(){var a=j.value;a.typeEnum===H||[].concat(f(c)).some(function(b){return s.isDescendant(b,a)})||g._addDescendantStatesToEnter(a,c,d,e)},l=a.states[Symbol.iterator]();!(b=(j=l.next()).done);b=!0)k()}catch(m){h=!0,i=m}finally{try{!b&&l["return"]&&l["return"]()}finally{if(h)throw i}}}},i=!0,j=!1,k=void 0;try{for(var l,m=s.getAncestors(a,b)[Symbol.iterator]();!(i=(l=m.next()).done);i=!0){var n=l.value;c.add(n),h(n)}}catch(o){j=!0,k=o}finally{try{!i&&m["return"]&&m["return"]()}finally{if(j)throw k}}h(b)}},{key:"_addDescendantStatesToEnter",value:function(a,b,c,d){var e=this;if(a.typeEnum===H)if(this._historyValue[a.id]){var g=!0,h=!1,i=void 0;try{for(var j,k=this._historyValue[a.id][Symbol.iterator]();!(g=(j=k.next()).done);g=!0){var l=j.value;this._addDescendantStatesToEnter(l,b,c,d)}}catch(m){h=!0,i=m}finally{try{!g&&k["return"]&&k["return"]()}finally{if(h)throw i}}var n=!0,o=!1,p=void 0;try{for(var q,r=this._historyValue[a.id][Symbol.iterator]();!(n=(q=r.next()).done);n=!0){var t=q.value;this._addAncestorStatesToEnter(t,a.parent,b,c,d)}}catch(m){o=!0,p=m}finally{try{!n&&r["return"]&&r["return"]()}finally{if(o)throw p}}}else{d[a.parent.id]=a.transitions[0];var u=!0,v=!1,w=void 0;try{for(var x,y=a.transitions[0].targets[Symbol.iterator]();!(u=(x=y.next()).done);u=!0){var z=x.value;this._addDescendantStatesToEnter(z,b,c,d)}}catch(m){v=!0,w=m}finally{try{!u&&y["return"]&&y["return"]()}finally{if(v)throw w}}var A=!0,B=!1,C=void 0;try{for(var D,E=a.transitions[0].targets[Symbol.iterator]();!(A=(D=E.next()).done);A=!0){var J=D.value;this._addAncestorStatesToEnter(J,a.parent,b,c,d)}}catch(m){B=!0,C=m}finally{try{!A&&E["return"]&&E["return"]()}finally{if(B)throw C}}}else if(b.add(a),a.typeEnum===F){c.add(a);var K=!0,L=!1,M=void 0;try{for(var N,O=a.initialRef[Symbol.iterator]();!(K=(N=O.next()).done);K=!0){var P=N.value,Q=P.typeEnum===I?P.transitions[0].targets:[P],R=!0,S=!1,T=void 0;try{for(var U,V=Q[Symbol.iterator]();!(R=(U=V.next()).done);R=!0){var W=U.value;this._addDescendantStatesToEnter(W,b,c,d)}}catch(m){S=!0,T=m}finally{try{!R&&V["return"]&&V["return"]()}finally{if(S)throw T}}}}catch(m){L=!0,M=m}finally{try{!K&&O["return"]&&O["return"]()}finally{if(L)throw M}}var X=!0,Y=!1,Z=void 0;try{for(var $,_=a.initialRef[Symbol.iterator]();!(X=($=_.next()).done);X=!0){var aa=$.value,ba=aa.typeEnum===I?aa.transitions[0].targets:[aa],ca=!0,da=!1,ea=void 0;try{for(var fa,ga=ba[Symbol.iterator]();!(ca=(fa=ga.next()).done);ca=!0){var ha=fa.value;this._addAncestorStatesToEnter(ha,a,b,c,d)}}catch(m){da=!0,ea=m}finally{try{!ca&&ga["return"]&&ga["return"]()}finally{if(da)throw ea}}}}catch(m){Y=!0,Z=m}finally{try{!X&&_["return"]&&_["return"]()}finally{if(Y)throw Z}}}else if(a.typeEnum===G){var ia=!0,ja=!1,ka=void 0;try{for(var la,ma=function(){var a=la.value;a.typeEnum===H||[].concat(f(b)).some(function(b){return s.isDescendant(b,a)})||e._addDescendantStatesToEnter(a,b,c,d)},na=a.states[Symbol.iterator]();!(ia=(la=na.next()).done);ia=!0)ma()}catch(m){ja=!0,ka=m}finally{try{!ia&&na["return"]&&na["return"]()}finally{if(ja)throw ka}}}}},{key:"isInFinalState",value:function(a){var b=this;return a.typeEnum===F?a.states.some(function(a){return a.typeEnum===J&&b._configuration.contains(a)}):a.typeEnum===G&&a.states.every(this.isInFinalState.bind(this))}},{key:"_evaluateAction",value:function(a,b){try{return b.call(this._scriptingContext,a)}catch(c){this._handleError(c,b)}}},{key:"_handleError",value:function(a,b){var c=a instanceof Error||"string"==typeof a.__proto__.name&&a.__proto__.name.match(/^.*Error$/)?{ name:"error.execution",data:{tagname:b.tagname,line:b.line,column:b.column,reason:a.message},type:"platform"}:a.name?a:{name:"error.execution",data:a,type:"platform"};this._internalEventQueue.push(c),this.emit("onError",c)}},{key:"_log",value:function(){if(L){var a=Array.from(arguments);this.opts.console.log(a[0]+": "+a.slice(1).map(function(a){return null===a?"null":void 0===a?"undefined":"string"==typeof a?a:"[object Object]"===a.toString()?o.inspect(a):a.toString()}).join(", ")+"\n")}}},{key:"registerListener",value:function(a){c.EVENTS.forEach(function(b){a[b]&&this.on(b,a[b])},this)}},{key:"unregisterListener",value:function(a){c.EVENTS.forEach(function(b){a[b]&&this.off(b,a[b])},this)}},{key:"getAllTransitionEvents",value:function(){function a(c){if(c.transitions)for(var d=0,e=c.transitions.length;d<e;d++)b[c.transitions[d].event]=!0;if(c.states)for(var f=0,g=c.states.length;f<g;f++)a(c.states[f])}var b={};return a(this._model),Object.keys(b)}},{key:"getSnapshot",value:function(){return[this.getConfiguration(),this._serializeHistory(),this._isInFinalState,this._model.$serializeDatamodel(),this._internalEventQueue.slice()]}},{key:"_serializeHistory",value:function(){var a={};return Object.keys(this._historyValue).forEach(function(b){a[b]=this._historyValue[b].map(function(a){return a.id})},this),a}},{key:"gen",value:function(a,b){var c;switch("undefined"==typeof a?"undefined":l(a)){case"string":c={name:a,data:b};break;case"object":if("string"!=typeof a.name)throw new Error('Event object must have "name" property of type string.');c=a;break;default:throw new Error("First argument to gen must be a string or object.")}if(this._isStepping)throw new Error("Cannot call gen during a big-step");return this._isStepping=!0,this._performBigStep(c),this._isStepping=!1,this.getConfiguration()}},{key:"genAsync",value:function(a,b){function c(a,b){this._performBigStepAsync(a,function(a,d){b(a,d),this._externalEventQueue.length?c.apply(this,this._externalEventQueue.shift()):this._isStepping=!1}.bind(this))}if(null!==a&&("object"!==("undefined"==typeof a?"undefined":l(a))||!a||"string"!=typeof a.name))throw new Error("Expected currentEvent to be null or an Object with a name");"function"!=typeof b&&(b=j),this._externalEventQueue.push([a,b]),this._isStepping||(this._isStepping=!0,c.apply(this,this._externalEventQueue.shift()))}}]),c}(n);M.EVENTS=["onEntry","onExit","onTransition","onDefaultEntry","onError","onBigStepBegin","onBigStepSuspend","onBigStepResume","onSmallStepBegin","onSmallStepEnd","onBigStepEnd","onExitInterpreter"],M.sessionIdCounter=1,M.generateSessionid=function(){return M.sessionIdCounter++},M.sessionRegistry=new Map;var N=function(){function a(b){g(this,a),this._interpreter=b,this._timeoutMap={},this._invokeMap={},this._timeouts=new Set,this.validateUriRegex=/(#_.*)|\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))/i,this.invokeSendTargetRegex=/^#_(.*)$/,this.scxmlSendTargetRegex=/^#_scxml_(.*)$/}return m(a,[{key:"raise",value:function(a){this._installDefaultPropsOnEvent(a,!0),this._interpreter._internalEventQueue.push(a)}},{key:"parseXmlStringAsDOM",value:function(b){return(this._interpreter.opts.xmlParser||a.xmlParser).parse(b)}},{key:"invoke",value:function(b){var c=this;this._invokeMap[b.id]=new Promise(function(d,e){(c._interpreter.opts.invokers||a.invokers)[b.type](c._interpreter,b,c._interpreter.opts.invokerExecutionContext,function(a,b){return a?e(a):(c._interpreter.emit("onInvokedSessionInitialized",b),void d(b))})})}},{key:"cancelInvoke",value:function(a){var b=this,c=this._invokeMap[a];this._interpreter._log("cancelling session with invokeid "+a),c&&(this._interpreter._log("sessionPromise found"),c.then(function(c){b._interpreter._log("resolved session "+a+". cancelling... 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this._timeoutMap[a.sendid],this._timeouts["delete"](e),this._interpreter.opts.doSend?this._interpreter.opts.doSend(c,a):c[this._interpreter.opts.sendAsync?"genAsync":"gen"](a)}.bind(this),b.delay||0),e={sendOptions:b,timeoutHandle:d};a.sendid&&(this._timeoutMap[a.sendid]=d),this._timeouts.add(e)}var d=this;if("undefined"==typeof setTimeout)throw new Error("Default implementation of BaseInterpreter.prototype.send will not work unless setTimeout is defined globally.");var e;if("#_internal"===a.target)this.raise(a);else if(this._installDefaultPropsOnEvent(a,!1),a.origintype=K,a.target)if("#_parent"===a.target){if(!this._interpreter.opts.parentSession)throw{name:"error.communication",data:"Parent session not specified",sendid:a.sendid,type:"platform"};a.invokeid=this._interpreter.opts.invokeid,c.call(this,this._interpreter.opts.parentSession)}else if(e=a.target.match(this.scxmlSendTargetRegex)){var 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