import FrontCalculatorParserToken from "./front.calculator.parser.token";
import FrontCalculatorSymbolNumber from "../symbol/front.calculator.symbol.number";
import FrontCalculatorSymbolOpeningBracket from "../symbol/brackets/front.calculator.symbol.opening.bracket";
import FrontCalculatorSymbolClosingBracket from "../symbol/brackets/front.calculator.symbol.closing.bracket";
import FrontCalculatorSymbolFunctionAbstract from "../symbol/abstract/front.calculator.symbol.function.abstract";
import FrontCalculatorSymbolOperatorAbstract from "../symbol/abstract/front.calculator.symbol.operator.abstract";
import FrontCalculatorSymbolSeparator from "../symbol/front.calculator.symbol.separator";
import FrontCalculatorParserNodeSymbol from "./node/front.calculator.parser.node.symbol";
import FrontCalculatorParserNodeContainer from "./node/front.calculator.parser.node.container";
import FrontCalculatorParserNodeFunction from "./node/front.calculator.parser.node.function";

/**
 * The parsers has one important method: parse()
 * It takes an array of tokens as input and
 * returns an array of nodes as output.
 * These nodes are the syntax tree of the term.
 *
 */
export default class FrontCalculatorParser {
	/**
	 *
	 * @param {FrontCalculatorSymbolLoader} symbolLoader
	 */
	constructor(symbolLoader) {

		/**
		 *
		 * @type {FrontCalculatorSymbolLoader}
		 */
		this.symbolLoader = symbolLoader;
	}

	/**
	 * Parses an array with tokens. Returns an array of nodes.
	 * These nodes define a syntax tree.
	 *
	 * @param {FrontCalculatorParserToken[]} tokens
	 *
	 * @returns FrontCalculatorParserNodeContainer
	 */
	parse(tokens) {
		var symbolNodes = this.detectSymbols(tokens);

		var nodes = this.createTreeByBrackets(symbolNodes);

		nodes = this.transformTreeByFunctions(nodes);

		this.checkGrammar(nodes);

		// Wrap the nodes in an array node.
		return new FrontCalculatorParserNodeContainer(nodes);
	}

	/**
	 * Creates a flat array of symbol nodes from tokens.
	 *
	 * @param {FrontCalculatorParserToken[]} tokens
	 * @returns {FrontCalculatorParserNodeSymbol[]}
	 */
	detectSymbols(tokens) {
		var symbolNodes = [];
		var symbol      = null;
		var identifier  = null;

		var expectingOpeningBracket = false; // True if we expect an opening bracket (after a function name)
		var openBracketCounter      = 0;

		for (var i = 0; i < tokens.length; i++) {
			var token = tokens[i];
			var type  = token.type;

			if (FrontCalculatorParserToken.TYPE_WORD === type) {
				identifier = token.value;
				symbol     = this.symbolLoader.find(identifier);

				if (null === symbol) {
					throw ('Error: Detected unknown or invalid string identifier: ' + identifier + '.');
				}
			} else if (type === FrontCalculatorParserToken.TYPE_NUMBER) {
				// Notice: Numbers do not have an identifier
				var symbolNumbers = this.symbolLoader.findSubTypes(FrontCalculatorSymbolNumber);

				if (symbolNumbers.length < 1 || !(symbolNumbers instanceof Array)) {
					throw ('Error: Unavailable number symbol processor.');
				}

				symbol = symbolNumbers[0];
			} else {// Type Token::TYPE_CHARACTER:
				identifier = token.value;
				symbol     = this.symbolLoader.find(identifier);
				if (null === symbol) {
					throw ('Error: Detected unknown or invalid string identifier: ' + identifier + '.');
				}

				if (symbol instanceof FrontCalculatorSymbolOpeningBracket) {
					openBracketCounter++;
				}
				if (symbol instanceof FrontCalculatorSymbolClosingBracket) {
					openBracketCounter--;

					// Make sure there are not too many closing brackets
					if (openBracketCounter < 0) {
						throw ('Error: Found closing bracket that does not have an opening bracket.');
					}
				}

			}

			if (expectingOpeningBracket) {
				if (!(symbol instanceof FrontCalculatorSymbolOpeningBracket)) {
					throw ('Error: Expected opening bracket (after a function) but got something else.');
				}

				expectingOpeningBracket = false;
			} else {
				if (symbol instanceof FrontCalculatorSymbolFunctionAbstract) {
					expectingOpeningBracket = true;
				}
			}

			var symbolNode = new FrontCalculatorParserNodeSymbol(token, symbol);

			symbolNodes.push(symbolNode);
		}

		// Make sure the term does not end with the name of a function but without an opening bracket
		if (expectingOpeningBracket) {
			throw ('Error: Expected opening bracket (after a function) but reached the end of the term');
		}

		// Make sure there are not too many opening brackets
		if (openBracketCounter > 0) {
			throw ('Error: There is at least one opening bracket that does not have a closing bracket');
		}

		return symbolNodes;
	}

	/**
	 * Expects a flat array of symbol nodes and (if possible) transforms
	 * it to a tree of nodes. Cares for brackets.
	 * Attention: Expects valid brackets!
	 * Check the brackets before you call this method.
	 *
	 * @param {FrontCalculatorParserNodeSymbol[]} symbolNodes
	 * @returns {FrontCalculatorParserNodeAbstract[]}
	 */
	createTreeByBrackets(symbolNodes) {
		var tree               = [];
		var nodesInBracket     = []; // AbstractSymbol nodes inside level-0-brackets
		var openBracketCounter = 0;

		for (var i = 0; i < symbolNodes.length; i++) {
			var symbolNode = symbolNodes[i];

			if (!(symbolNode instanceof FrontCalculatorParserNodeSymbol)) {
				throw ('Error: Expected symbol node, but got "' + symbolNode.constructor.name + '"');
			}

			if (symbolNode.symbol instanceof FrontCalculatorSymbolOpeningBracket) {
				openBracketCounter++;

				if (openBracketCounter > 1) {
					nodesInBracket.push(symbolNode);
				}
			} else if (symbolNode.symbol instanceof FrontCalculatorSymbolClosingBracket) {
				openBracketCounter--;

				// Found a closing bracket on level 0
				if (0 === openBracketCounter) {
					var subTree = this.createTreeByBrackets(nodesInBracket);

					// Subtree can be empty for example if the term looks like this: "()" or "functioname()"
					// But this is okay, we need to allow this so we can call functions without a parameter
					tree.push(new FrontCalculatorParserNodeContainer(subTree));
					nodesInBracket = [];
				} else {
					nodesInBracket.push(symbolNode);
				}
			} else {
				if (0 === openBracketCounter) {
					tree.push(symbolNode);
				} else {
					nodesInBracket.push(symbolNode);
				}
			}
		}

		return tree;
	}

	/**
	 * Replaces [a SymbolNode that has a symbol of type AbstractFunction,
	 * followed by a node of type ContainerNode] by a FunctionNode.
	 * Expects the $nodes not including any function nodes (yet).
	 *
	 * @param {FrontCalculatorParserNodeAbstract[]} nodes
	 *
	 * @returns {FrontCalculatorParserNodeAbstract[]}
	 */
	transformTreeByFunctions(nodes) {
		var transformedNodes   = [];
		var functionSymbolNode = null;

		for (var i = 0; i < nodes.length; i++) {
			var node = nodes[i];

			if (node instanceof FrontCalculatorParserNodeContainer) {
				var transformedChildNodes = this.transformTreeByFunctions(node.childNodes);

				if (null !== functionSymbolNode) {
					var functionNode = new FrontCalculatorParserNodeFunction(transformedChildNodes, functionSymbolNode);
					transformedNodes.push(functionNode);
					functionSymbolNode = null;
				} else {
					// not a function
					node.childNodes = transformedChildNodes;
					transformedNodes.push(node);
				}
			} else if (node instanceof FrontCalculatorParserNodeSymbol) {
				var symbol = node.symbol;
				if (symbol instanceof FrontCalculatorSymbolFunctionAbstract) {
					functionSymbolNode = node;
				} else {
					transformedNodes.push(node);
				}
			} else {
				throw ('Error: Expected array node or symbol node, got "' + node.constructor.name + '"');
			}

		}

		return transformedNodes;
	}

	/**
	 * Ensures the tree follows the grammar rules for terms
	 *
	 * @param {FrontCalculatorParserNodeAbstract[]} nodes
	 */
	checkGrammar(nodes) {
		// TODO Make sure that separators are only in the child nodes of the array node of a function node
		// (If this happens the calculator will throw an exception)

		for (var i = 0; i < nodes.length; i++) {
			var node = nodes[i];
			if (node instanceof FrontCalculatorParserNodeSymbol) {
				var symbol = node.symbol;

				if (symbol instanceof FrontCalculatorSymbolOperatorAbstract) {
					var posOfRightOperand = i + 1;

					// Make sure the operator is positioned left of a (potential) operand (=prefix notation).
					// Example term: "-1"
					if (posOfRightOperand >= nodes.length) {
						throw ('Error: Found operator that does not stand before an operand.');
					}

					var posOfLeftOperand = i - 1;

					var leftOperand = null;

					// Operator is unary if positioned at the beginning of a term
					if (posOfLeftOperand >= 0) {
						leftOperand = nodes[posOfLeftOperand];

						if (leftOperand instanceof FrontCalculatorParserNodeSymbol) {
							if (leftOperand.symbol instanceof FrontCalculatorSymbolOperatorAbstract  // example 1`+-`5 : + = operator, - = unary
							    || leftOperand.symbol instanceof FrontCalculatorSymbolSeparator // example func(1`,-`5) ,= separator, - = unary
							) {
								// Operator is unary if positioned right to another operator
								leftOperand = null;
							}
						}
					}

					// If null, the operator is unary
					if (null === leftOperand) {
						if (!symbol.operatesUnary) {
							throw ('Error: Found operator in unary notation that is not unary.');
						}

						// Remember that this node represents a unary operator
						node.setIsUnaryOperator(true);
					} else {
						if (!symbol.operatesBinary) {
							console.log(symbol);
							throw ('Error: Found operator in binary notation that is not binary.');
						}
					}
				}
			} else {
				this.checkGrammar(node.childNodes);
			}
		}
	}
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Jim Kaat, now 86, is in the Federal Baseball Hall of Magnificence, however, one\u2019s for some reason maybe not his better accomplishment while the a runner. Instead, it\u2019s capturing their ages (75 and 70) while the both a righty and a great lefty. <!--more--> Kaat are obviously remaining-handed, and you can fight along with his brief game had him seeking to one thing away in the other side.<\/p>\n<h2 id=\"toc-0\">Large Rating Inside A primary QUALIFIER &#8211; f1 mexico grand prix<\/h2>\n<p>Larrazabal very need to have made it right back-to-back Spanish winners each week once Alejandro del Rey&#8217;s earn and you may around three Spaniards made the top four, using some more merely at the rear of. As a whole I would personally say that is smaller from the quality operating than just additional three wasteland programmes we&#8217;ve been to not too long ago. There are still five level-fives and you will a now regular driveable par-five going in the, but everybody in the profession can also be reach the sixteenth because the ninth, unfortunately, try seldom starred away from a forward tee. Which means people are laying up and for the superficial, raised 10th green especially tough to hit-in a few, it&#8217;s about wedges compared to larger adhere. I won&#8217;t hold it up against a wonderful pro and you will isn&#8217;t really they high to see anyone for example him arrange it all out in the its 30s.<\/p>\n<h2 id=\"toc-1\">Find the Finest Tennis Programs Around the world<\/h2>\n<p>The following eldest biggest is perhaps most famous if you are the fresh hardest competition in the tennis. Such as the British Open <a href=\"https:\/\/maxforceracing.com\/formula-1\/mexico-grand-prix\/\" target=\"_blank\" rel=\"noopener\">f1 mexico grand prix<\/a> it\u2019s played for the various other classic programs yearly nevertheless criteria will always be intense. The category are going to end up being enough time, the fresh fairways narrow, the new harsh strong and also the veggies fast.<\/p>\n<ul>\n<li>Having its strategic bunkers, undulating fairways, and astonishing h2o has, the category also offers an unforgettable bullet away from tennis.<\/li>\n<li>Pro golf&#8217;s five discipline provide the finest industries, the most significant limits and the most thrill.<\/li>\n<li>The newest Discover Tournament, also known as british Unlock, provides an alternative attraction, played around the backlinks programs in britain.<\/li>\n<li>The function might have been important to promote women\u2019s golf and fostering rivalry among them sides.<\/li>\n<li>Ben Coley has already established five huge-rate towns out of around three DP Community Tour occurrences to date that it year, and from now on seems so you can house a champion regarding the Qatar Benefits.<\/li>\n<li>The category itself is difficult but enjoyable for all degrees of players, so it&#8217;s a great choice for a week-end holiday if not a longer stand.<\/li>\n<\/ul>\n<p>The newest Solheim Cup\u2019s distribution is really just like the Ryder Mug. The most important thing to have golf admirers to understand the brand new dates as well as the size of these competitions. Here\u2019s a listing of several of the most esteemed competitions to the planet that would be interesting for your requirements. Many of these take place in the around the world recognized golf programmes and this interest the best golfers who&#8217;re common worldwide. Because the Pros, it matches various other step 3 of one&#8217;s greatest cuatro biggest and more than esteemed golf championships across the globe. Regarding the renowned Wonderful Happen statue to the esteemed champions\u2019 listing, The brand new Art gallery Contest offers another mix of lifestyle and you will thrill that\u2019s sure to amuse admirers of any age.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.denverpost.com\/wp-content\/uploads\/2018\/05\/04d89dd43d5247f086295ff15ac5888c.jpg?w=533\" alt=\"f1 mexico grand prix\" align=\"left\" border=\"0\" title=\"\"><\/p>\n<p>Nicklaus in addition to appeared to your our very own defense 38 moments, over any subject. The message on this website is actually for activity aim just and CBS Sporting events produces no image or promise from what precision of your own guidance provided or the results of people video game or feel. The site include commercial content and you may CBS Activities is generally compensated for the backlinks considering on this site.<\/p>\n<p>Pro golf&#8217;s five majors give you the greatest fields, the most significant limits plus the most excitement. Attending while the a good spectator affords anyone the opportunity to witness record. Exactly what the most significant contest in the tennis is depends on exactly what the biggest function. The newest tennis contest most abundant in hype and more than someone seeing is without a doubt the fresh Pros at the Augusta. Yet not, the newest Spend Government Phoenix Discover gets the extremely attendees by the a great distance, however, we\u2019d of course name the fresh Pros as the biggest competition. The big event brings together golf\u2019s elite to improve fund to own pediatric cancers search, and it also functions as an effective indication of the impact golf have outside the fairways.<\/p>\n<h2 id=\"toc-4\">PGA Journey: Rory McIlroy &#8216;close&#8217; in order to their better and you may happy with acuteness just after AT&amp;T Pebble Seashore Expert-Was win<\/h2>\n<p>Since the earliest of your own four significant titles, The newest Unlock Tournament, popularly known as the british Unlock, happen for the certain historic programmes in the uk. It July experience examination participants using its erratic environment and you may tricky website links programs. Profitable The newest Open is actually a dream for your golfer, solidifying their place in history. Kept a-year from the Augusta Federal Golf club in the Augusta, Georgia, The new Professionals is perhaps probably the most esteemed tennis tournament. Recognized for the iconic environmentally friendly jacket and you will blooming azaleas, that it April experience integrates an informed players worldwide. The new Professionals try steeped inside the society, providing a different blend of history and you may adventure.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/i2.wp.com\/www.dmcreisen.com\/wp-content\/uploads\/2017\/08\/tg2w3ed7fyh2w8e222.jpg?resize=960%2C450\" alt=\"f1 mexico grand prix\" align=\"right\" border=\"1\" style=\"padding: 10px;\" title=\"\"><\/p>\n<p>From the iconic par-step three seventeenth opening on the stunning opinions of one&#8217;s Florida landscaping, the fresh Arnold Palmer Invitational also provides a casual environment and plenty of adventure enthusiasts of various age groups. Preceding the fresh Ryder Mug, the newest Walker Glass\u2019s resource is actually traced in order to global matches presenting amateur players within the 1921. The competition fosters sportsmanship and contains be a breeding ground to have coming elite superstars.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yet not, their listing of 1,305 consecutive days (twenty five years) regarding the Better fifty nevertheless really stands. Jim Kaat, now 86, is in the Federal Baseball Hall of Magnificence, however, one\u2019s for some reason maybe not his better accomplishment while the a runner. Instead, it\u2019s capturing their ages (75 and 70) while the both [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[305],"tags":[],"class_list":["post-2549","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/posts\/2549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/makemyasset.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2549"}],"version-history":[{"count":1,"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/posts\/2549\/revisions"}],"predecessor-version":[{"id":2550,"href":"https:\/\/makemyasset.in\/index.php?rest_route=\/wp\/v2\/posts\/2549\/revisions\/2550"}],"wp:attachment":[{"href":"https:\/\/makemyasset.in\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/makemyasset.in\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/makemyasset.in\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}