private void DeregisterGroupSymbolEvents(GroupSymbol groupSymbol)
{
groupSymbol.Changed -= new EventHandler(GroupSymbol_Changed);
groupSymbol.SymbolsCollection.ItemsAdded -= new Collections.CollectionItemsChangedEventHandler <ISymbol>(GroupSymbol_ItemsAdded);
groupSymbol.SymbolsCollection.ItemsRemoved -= new Collections.CollectionItemsChangedEventHandler <ISymbol>(GroupSymbol_ItemsRemoved);
groupSymbol.SymbolsCollection.CollectionReset -= new Collections.CollectionItemsChangedEventHandler <ISymbol>(GroupSymbol_CollectionReset);
}
private void GroupSymbol_Changed(object sender, EventArgs e)
{
GroupSymbol groupSymbol = (GroupSymbol)sender;
foreach (ISymbol symbol in groupSymbol.Flatten())
{
symbol.Enabled = groupSymbol.Enabled;
}
ClearCaches();
OnChanged();
}
private GroupSymbol(GroupSymbol original, Cloner cloner)
: base(original, cloner)
{
symbols = new ObservableSet <ISymbol>(original.Symbols.Select(s => cloner.Clone(s)));
}
private void Initialize() {
#region symbol declaration
var add = new Addition();
var sub = new Subtraction();
var mul = new Multiplication();
var div = new Division();
var mean = new Average();
var sin = new Sine();
var cos = new Cosine();
var tan = new Tangent();
var log = new Logarithm();
var pow = new Power();
var square = new Square();
var root = new Root();
var sqrt = new SquareRoot();
var exp = new Exponential();
var airyA = new AiryA();
var airyB = new AiryB();
var bessel = new Bessel();
var cosineIntegral = new CosineIntegral();
var dawson = new Dawson();
var erf = new Erf();
var expIntegralEi = new ExponentialIntegralEi();
var fresnelCosineIntegral = new FresnelCosineIntegral();
var fresnelSineIntegral = new FresnelSineIntegral();
var gamma = new Gamma();
var hypCosineIntegral = new HyperbolicCosineIntegral();
var hypSineIntegral = new HyperbolicSineIntegral();
var norm = new Norm();
var psi = new Psi();
var sineIntegral = new SineIntegral();
var @if = new IfThenElse();
var gt = new GreaterThan();
var lt = new LessThan();
var and = new And();
var or = new Or();
var not = new Not();
var xor = new Xor();
var variableCondition = new VariableCondition();
var timeLag = new TimeLag();
var integral = new Integral();
var derivative = new Derivative();
var constant = new Constant();
constant.MinValue = -20;
constant.MaxValue = 20;
var variableSymbol = new Variable();
var laggedVariable = new LaggedVariable();
var autoregressiveVariable = new AutoregressiveTargetVariable();
#endregion
#region group symbol declaration
var arithmeticSymbols = new GroupSymbol(ArithmeticFunctionsName, new List<ISymbol>() { add, sub, mul, div, mean });
var trigonometricSymbols = new GroupSymbol(TrigonometricFunctionsName, new List<ISymbol>() { sin, cos, tan });
var exponentialAndLogarithmicSymbols = new GroupSymbol(ExponentialFunctionsName, new List<ISymbol> { exp, log });
var specialFunctions = new GroupSymbol(SpecialFunctionsName, new List<ISymbol> { airyA, airyB, bessel, cosineIntegral, dawson, erf, expIntegralEi,
fresnelCosineIntegral,fresnelSineIntegral,gamma,hypCosineIntegral,hypSineIntegral,norm, psi, sineIntegral});
var terminalSymbols = new GroupSymbol(TerminalsName, new List<ISymbol> { constant, variableSymbol });
var realValuedSymbols = new GroupSymbol(RealValuedSymbolsName, new List<ISymbol>() { arithmeticSymbols, trigonometricSymbols, exponentialAndLogarithmicSymbols, specialFunctions, terminalSymbols });
var powerSymbols = new GroupSymbol(PowerFunctionsName, new List<ISymbol> { square, pow, sqrt, root });
var conditionSymbols = new GroupSymbol(ConditionsName, new List<ISymbol> { @if, variableCondition });
var comparisonSymbols = new GroupSymbol(ComparisonsName, new List<ISymbol> { gt, lt });
var booleanOperationSymbols = new GroupSymbol(BooleanOperatorsName, new List<ISymbol> { and, or, not, xor });
var conditionalSymbols = new GroupSymbol(ConditionalSymbolsName, new List<ISymbol> { conditionSymbols, comparisonSymbols, booleanOperationSymbols });
var timeSeriesSymbols = new GroupSymbol(TimeSeriesSymbolsName, new List<ISymbol> { timeLag, integral, derivative, laggedVariable, autoregressiveVariable });
#endregion
AddSymbol(realValuedSymbols);
AddSymbol(powerSymbols);
AddSymbol(conditionalSymbols);
AddSymbol(timeSeriesSymbols);
#region subtree count configuration
SetSubtreeCount(arithmeticSymbols, 2, 2);
SetSubtreeCount(trigonometricSymbols, 1, 1);
SetSubtreeCount(pow, 2, 2);
SetSubtreeCount(root, 2, 2);
SetSubtreeCount(square, 1, 1);
SetSubtreeCount(sqrt, 1, 1);
SetSubtreeCount(exponentialAndLogarithmicSymbols, 1, 1);
SetSubtreeCount(specialFunctions, 1, 1);
SetSubtreeCount(terminalSymbols, 0, 0);
SetSubtreeCount(@if, 3, 3);
SetSubtreeCount(variableCondition, 2, 2);
SetSubtreeCount(comparisonSymbols, 2, 2);
SetSubtreeCount(and, 2, 2);
SetSubtreeCount(or, 2, 2);
SetSubtreeCount(not, 1, 1);
SetSubtreeCount(xor, 2, 2);
SetSubtreeCount(timeLag, 1, 1);
SetSubtreeCount(integral, 1, 1);
SetSubtreeCount(derivative, 1, 1);
SetSubtreeCount(laggedVariable, 0, 0);
SetSubtreeCount(autoregressiveVariable, 0, 0);
#endregion
#region allowed child symbols configuration
AddAllowedChildSymbol(StartSymbol, realValuedSymbols);
AddAllowedChildSymbol(StartSymbol, powerSymbols);
AddAllowedChildSymbol(StartSymbol, conditionSymbols);
AddAllowedChildSymbol(StartSymbol, timeSeriesSymbols);
AddAllowedChildSymbol(StartSymbol, specialFunctions);
AddAllowedChildSymbol(DefunSymbol, realValuedSymbols);
AddAllowedChildSymbol(DefunSymbol, powerSymbols);
AddAllowedChildSymbol(DefunSymbol, conditionSymbols);
AddAllowedChildSymbol(DefunSymbol, timeSeriesSymbols);
AddAllowedChildSymbol(DefunSymbol, specialFunctions);
AddAllowedChildSymbol(realValuedSymbols, realValuedSymbols);
AddAllowedChildSymbol(realValuedSymbols, powerSymbols);
AddAllowedChildSymbol(realValuedSymbols, conditionSymbols);
AddAllowedChildSymbol(realValuedSymbols, timeSeriesSymbols);
AddAllowedChildSymbol(realValuedSymbols, specialFunctions);
AddAllowedChildSymbol(powerSymbols, variableSymbol, 0);
AddAllowedChildSymbol(powerSymbols, laggedVariable, 0);
AddAllowedChildSymbol(powerSymbols, autoregressiveVariable, 0);
AddAllowedChildSymbol(powerSymbols, constant, 1);
AddAllowedChildSymbol(square, realValuedSymbols, 0);
AddAllowedChildSymbol(square, conditionSymbols, 0);
AddAllowedChildSymbol(square, timeSeriesSymbols, 0);
AddAllowedChildSymbol(sqrt, realValuedSymbols, 0);
AddAllowedChildSymbol(sqrt, conditionSymbols, 0);
AddAllowedChildSymbol(sqrt, timeSeriesSymbols, 0);
AddAllowedChildSymbol(@if, comparisonSymbols, 0);
AddAllowedChildSymbol(@if, booleanOperationSymbols, 0);
AddAllowedChildSymbol(@if, conditionSymbols, 1);
AddAllowedChildSymbol(@if, realValuedSymbols, 1);
AddAllowedChildSymbol(@if, powerSymbols, 1);
AddAllowedChildSymbol(@if, timeSeriesSymbols, 1);
AddAllowedChildSymbol(@if, conditionSymbols, 2);
AddAllowedChildSymbol(@if, realValuedSymbols, 2);
AddAllowedChildSymbol(@if, powerSymbols, 2);
AddAllowedChildSymbol(@if, timeSeriesSymbols, 2);
AddAllowedChildSymbol(booleanOperationSymbols, comparisonSymbols);
AddAllowedChildSymbol(comparisonSymbols, realValuedSymbols);
AddAllowedChildSymbol(comparisonSymbols, powerSymbols);
AddAllowedChildSymbol(comparisonSymbols, conditionSymbols);
AddAllowedChildSymbol(comparisonSymbols, timeSeriesSymbols);
AddAllowedChildSymbol(variableCondition, realValuedSymbols);
AddAllowedChildSymbol(variableCondition, powerSymbols);
AddAllowedChildSymbol(variableCondition, conditionSymbols);
AddAllowedChildSymbol(variableCondition, timeSeriesSymbols);
AddAllowedChildSymbol(timeLag, realValuedSymbols);
AddAllowedChildSymbol(timeLag, powerSymbols);
AddAllowedChildSymbol(timeLag, conditionSymbols);
AddAllowedChildSymbol(integral, realValuedSymbols);
AddAllowedChildSymbol(integral, powerSymbols);
AddAllowedChildSymbol(integral, conditionSymbols);
AddAllowedChildSymbol(derivative, realValuedSymbols);
AddAllowedChildSymbol(derivative, powerSymbols);
AddAllowedChildSymbol(derivative, conditionSymbols);
#endregion
}
// initialize set of allowed symbols and define
// the allowed combinations of symbols
private void Initialize() {
#region Symbols
var block = new SimpleSymbol("Block", "A group of statements", 1, byte.MaxValue);
var stat = new SimpleSymbol("Statement", "A statement.", 1, 1);
var ifThenElseStat = new SimpleSymbol("IfThenElseStat", "An if statement.", 2, 3);
var whileStat = new SimpleSymbol("WhileStat", "A while statement.", 2, 2);
whileStat.Enabled = false;
var boolExpr = new SimpleSymbol("BooleanExpression", "A Boolean expression.", 1, 1);
var numericalExpr = new SimpleSymbol("NumericalExpression", "A numerical expression.", 1, 1);
var equal = new SimpleSymbol("Equal", "Equal comparator.", 2, 2);
var lessThan = new SimpleSymbol("LessThan", "LessThan comparator.", 2, 2);
var lessThanOrEqual = new SimpleSymbol("LessThanOrEqual", "LessThanOrEqual comparator.", 2, 2);
var greaterThan = new SimpleSymbol("GreaterThan", "GreaterThan comparator.", 2, 2);
var greaterThanOrEqual = new SimpleSymbol("GreaterThanOrEqual", "GreaterThanOrEqual comparator.", 2, 2);
var conjunction = new SimpleSymbol("ConditionalAnd", "Conjunction comparator.", 2, byte.MaxValue);
var disjunction = new SimpleSymbol("ConditionalOr", "Disjunction comparator.", 2, byte.MaxValue);
var negation = new SimpleSymbol("Negation", "A negation.", 1, 1);
var addition = new SimpleSymbol("Addition", "Addition operator.", 2, byte.MaxValue);
var subtraction = new SimpleSymbol("Subtraction", "Subtraction operator.", 2, byte.MaxValue);
var multiplication = new SimpleSymbol("Multiplication", "Multiplication operator.", 2, byte.MaxValue);
var division = new SimpleSymbol("Division", "Division operator.", 2, byte.MaxValue);
var modulus = new SimpleSymbol("Modulus", "Modulus operator.", 2, byte.MaxValue);
var number = new Number();
var logicalVal = new BooleanValue();
var ahead = new SimpleSymbol("Ahead", "Immediately moves your robot ahead (forward) by distance measured in pixels.", 1, 1);
var back = new SimpleSymbol("Back", "Immediately moves your robot backward by distance measured in pixels.", 1, 1);
var fire = new SimpleSymbol("Fire", "Immediately fires a bullet.", 1, 1);
var shotPower = new ShotPower();
var getEnergy = new SimpleSymbol("GetEnergy", "Returns the robot's current energy.", 0, 0);
var getHeading = new SimpleSymbol("GetHeading", "Returns the direction that the robot's body is facing, in degrees.", 0, 0);
var getGunHeading = new SimpleSymbol("GetGunHeading", "Returns the direction that the robot's gun is facing, in degrees.", 0, 0);
var getRadarHeading = new SimpleSymbol("GetRadarHeading", "Returns the direction that the robot's radar is facing, in degrees.", 0, 0);
var getX = new SimpleSymbol("GetX", "Returns the X position of the robot. (0,0) is at the bottom left of the battlefield.", 0, 0);
var getY = new SimpleSymbol("GetY", "Returns the Y position of the robot. (0,0) is at the bottom left of the battlefield.", 0, 0);
var turnLeft = new SimpleSymbol("TurnLeft", "Immediately turns the robot's body to the left by degrees.", 1, 1);
var turnRight = new SimpleSymbol("TurnRight", "Immediately turns the robot's body to the right by degrees.", 1, 1);
var turnGunLeft = new SimpleSymbol("TurnGunLeft", "Immediately turns the robot's gun to the left by degrees.", 1, 1);
var turnGunRight = new SimpleSymbol("TurnGunRight", "Immediately turns the robot's gun to the right by degrees.", 1, 1);
var turnRadarLeft = new SimpleSymbol("TurnRadarLeft", "Immediately turns the robot's radar to the left by degrees.", 1, 1);
var turnRadarRight = new SimpleSymbol("TurnRadarRight", "Immediately turns the robot's radar to the right by degrees.", 1, 1);
var onBulletHit = new SimpleSymbol("OnBulletHit", "This method is called when one of your bullets hits another robot.", 2, 10);
var onBulletMissed = new SimpleSymbol("OnBulletMissed", "This method is called when one of your bullets misses, i.e. hits a wall.", 2, 10);
var onHitByBullet = new SimpleSymbol("OnHitByBullet", "This method is called when your robot is hit by a bullet.", 2, 10);
var onHitRobot = new SimpleSymbol("OnHitRobot", "This method is called when your robot collides with another robot.", 2, 10);
var onHitWall = new SimpleSymbol("OnHitWall", "This method is called when your robot collides with a wall.", 2, 10);
var onScannedRobot = new SimpleSymbol("OnScannedRobot", "This method is called when your robot sees another robot, i.e. when the robot's radar scan \"hits\" another robot.", 2, 10);
var run = new SimpleSymbol("Run", "The main method in every robot.", 1, 10);
var tank = new SimpleSymbol("Tank", "The root of a Robocode Tank program.", 2, 7);
var doNothing = new SimpleSymbol("DoNothing", "Do nothing this turn, meaning that the robot will skip its turn.", 0, 0);
var emptyEvent = new SimpleSymbol("EmptyEvent", "This is a placeholder for an empty event.", 0, 0);
#endregion
#region Symbol Collections
var controlSymbols = new ISymbol[] { ifThenElseStat, whileStat };
var actionSymbols = new ISymbol[] {
ahead, back, fire, turnGunLeft, turnGunRight, turnLeft, turnRadarLeft, turnRadarRight, turnRight
};
var functionSymbols = new ISymbol[] {
getEnergy, getGunHeading, getHeading, getRadarHeading, getX, getY
};
var events = new GroupSymbol(EventsName, new ISymbol[] { run, onScannedRobot, onBulletHit, onBulletMissed, onHitByBullet, onHitRobot, onHitWall });
var controlStatements = new GroupSymbol(ControlStatementsName, controlSymbols);
var expressions = new GroupSymbol(ExpressionsName, new ISymbol[] { boolExpr, numericalExpr });
var robocodeFunctions = new GroupSymbol(RobocodeFunctionsName, functionSymbols);
var robocodeActions = new GroupSymbol(RobocodeActionsName, actionSymbols);
var relationalOperators = new GroupSymbol(RelationalOperatorsName, new ISymbol[] { equal, lessThan, lessThanOrEqual, greaterThan, greaterThanOrEqual });
var logicalOperators = new GroupSymbol(LogicalOperators, new ISymbol[] { conjunction, disjunction, negation });
var numericalOperators = new GroupSymbol(NumericalOperatorsName, new ISymbol[] { addition, subtraction, multiplication, division, modulus });
#endregion
#region Adding Symbols
AddSymbol(tank);
AddSymbol(stat);
AddSymbol(block);
AddSymbol(shotPower);
AddSymbol(number);
AddSymbol(logicalVal);
AddSymbol(events);
AddSymbol(expressions);
AddSymbol(controlStatements);
AddSymbol(robocodeFunctions);
AddSymbol(robocodeActions);
AddSymbol(relationalOperators);
AddSymbol(logicalOperators);
AddSymbol(numericalOperators);
AddSymbol(emptyEvent);
AddSymbol(doNothing);
#endregion
#region Grammar Definition
// StartSymbol
AddAllowedChildSymbol(StartSymbol, tank);
// Tank
AddAllowedChildSymbol(tank, run, 0);
AddAllowedChildSymbol(tank, onScannedRobot, 1);
AddAllowedChildSymbol(tank, onBulletHit, 2);
AddAllowedChildSymbol(tank, onBulletMissed, 3);
AddAllowedChildSymbol(tank, onHitByBullet, 4);
AddAllowedChildSymbol(tank, onHitRobot, 5);
AddAllowedChildSymbol(tank, onHitWall, 6);
// Events
AddAllowedChildSymbol(events, stat);
// Block
AddAllowedChildSymbol(block, stat);
// Stat
AddAllowedChildSymbol(stat, stat);
AddAllowedChildSymbol(stat, block);
AddAllowedChildSymbol(stat, controlStatements);
AddAllowedChildSymbol(stat, robocodeFunctions);
AddAllowedChildSymbol(stat, robocodeActions);
AddAllowedChildSymbol(stat, emptyEvent);
AddAllowedChildSymbol(stat, doNothing);
// IfStat
AddAllowedChildSymbol(ifThenElseStat, boolExpr, 0);
AddAllowedChildSymbol(ifThenElseStat, stat, 1);
AddAllowedChildSymbol(ifThenElseStat, emptyEvent, 1);
AddAllowedChildSymbol(ifThenElseStat, doNothing, 1);
AddAllowedChildSymbol(ifThenElseStat, stat, 2);
AddAllowedChildSymbol(ifThenElseStat, emptyEvent, 2);
AddAllowedChildSymbol(ifThenElseStat, doNothing, 2);
// WhileStat
AddAllowedChildSymbol(whileStat, boolExpr, 0);
AddAllowedChildSymbol(whileStat, stat, 1);
AddAllowedChildSymbol(whileStat, emptyEvent, 1);
AddAllowedChildSymbol(whileStat, doNothing, 1);
// Numerical Expressions
AddAllowedChildSymbol(numericalExpr, number);
AddAllowedChildSymbol(numericalExpr, robocodeFunctions);
AddAllowedChildSymbol(numericalExpr, numericalOperators);
AddAllowedChildSymbol(numericalOperators, number);
AddAllowedChildSymbol(numericalOperators, robocodeFunctions);
AddAllowedChildSymbol(numericalOperators, numericalOperators);
// Logical Expressions
AddAllowedChildSymbol(boolExpr, logicalVal);
AddAllowedChildSymbol(boolExpr, logicalOperators);
AddAllowedChildSymbol(logicalOperators, logicalVal);
AddAllowedChildSymbol(logicalOperators, logicalOperators);
AddAllowedChildSymbol(logicalOperators, relationalOperators);
AddAllowedChildSymbol(relationalOperators, numericalExpr);
// Functions and Actions
AddAllowedChildSymbol(robocodeFunctions, numericalExpr);
foreach (var a in robocodeActions.Symbols) {
if (a.Name == fire.Name) AddAllowedChildSymbol(a, shotPower);
else AddAllowedChildSymbol(a, numericalExpr);
}
#endregion
}
private void DeregisterGroupSymbolEvents(GroupSymbol groupSymbol) {
groupSymbol.Changed -= new EventHandler(GroupSymbol_Changed);
groupSymbol.SymbolsCollection.ItemsAdded -= new Collections.CollectionItemsChangedEventHandler<ISymbol>(GroupSymbol_ItemsAdded);
groupSymbol.SymbolsCollection.ItemsRemoved -= new Collections.CollectionItemsChangedEventHandler<ISymbol>(GroupSymbol_ItemsRemoved);
groupSymbol.SymbolsCollection.CollectionReset -= new Collections.CollectionItemsChangedEventHandler<ISymbol>(GroupSymbol_CollectionReset);
}
private GroupSymbol(GroupSymbol original, Cloner cloner)
: base(original, cloner) {
symbols = new ObservableSet<ISymbol>(original.Symbols.Select(s => cloner.Clone(s)));
}
private CFGExpressionGrammar readGrammarBNFPrivate(String bnf) {
CFGExpressionGrammar treeGrammar = new CFGExpressionGrammar();
Dictionary<CFGProduction, List<string>> productions = new Dictionary<CFGProduction, List<string>>();
GroupSymbol root = null;
var rule = ruleRegex.Match(bnf);
while (rule.Success) {
GroupSymbol curRuleSymbolGroup = new GroupSymbol();
curRuleSymbolGroup.Name = "Rule: " + rule.Groups["rulename"].Value;
treeGrammar.AddSymbol(curRuleSymbolGroup);
if (root == null) {
root = curRuleSymbolGroup;
}
var production = productionRegex.Match(rule.Groups["production"].Value);
while (production.Success) {
string productionName = production.Groups["production"].Value.Trim();
if (!String.IsNullOrWhiteSpace(productionName)) {
// production rule already exists
// increase initial frequency
if (curRuleSymbolGroup.SymbolsCollection.Any(x => x.Name.Equals(productionName))) {
var symbol = (CFGSymbol)curRuleSymbolGroup.SymbolsCollection.First(x => x.Name.Equals(productionName));
symbol.InitialFrequency++;
} else {
List<string> parts = new List<string>();
parts.Add(String.Empty);
var subRule = ruleInProdRegex.Match(productionName);
List<string> rulesInProduction = new List<string>();
while (subRule.Success) {
if (!String.IsNullOrEmpty(subRule.Groups["subrule"].Value)) {
rulesInProduction.Add(subRule.Groups["subrule"].Value);
subRule = subRule.NextMatch();
parts.Add(String.Empty);
continue;
}
var part = String.Join(String.Empty, Enumerable.Range(1, subRule.Groups.Count - 1).Select(x => subRule.Groups[x].Value));
// unescape characters so that tab and newline can be defined in the grammar
if (part.Contains('\\')) {
part = part.Replace("\\n", Environment.NewLine);
part = Regex.Unescape(part);
}
parts[parts.Count - 1] = parts[parts.Count - 1] + part;
subRule = subRule.NextMatch();
}
CFGProduction productionSymbol = new CFGProduction(productionName, parts.Count == 0
? new List<string>() { productionName }
: parts);
productions.Add(productionSymbol, rulesInProduction);
curRuleSymbolGroup.SymbolsCollection.Add(productionSymbol);
}
}
production = production.NextMatch();
}
rule = rule.NextMatch();
}
// assign subrules for start symbol
var ruleGroupSymbol = treeGrammar.Symbols.Where(x => x is GroupSymbol && x.Name == root.Name).First() as GroupSymbol;
foreach (var subProduction in ruleGroupSymbol.SymbolsCollection) {
treeGrammar.AddAllowedChildSymbol(treeGrammar.StartSymbol, subProduction, 0);
}
// assign subrules
foreach (var allowedSymbol in treeGrammar.AllowedSymbols.Where(x => x is CFGProduction)) {
var cfgProduction = allowedSymbol as CFGProduction;
var rulesInProduction = productions[cfgProduction];
if (rulesInProduction.Count == 0) continue;
treeGrammar.SetSubtreeCount(cfgProduction, rulesInProduction.Count, rulesInProduction.Count);
for (int i = 0; i < rulesInProduction.Count; i++) {
ruleGroupSymbol = treeGrammar.Symbols.Where(x => x is GroupSymbol && x.Name.Substring("Rule: ".Length, x.Name.Length - "Rule: ".Length) == rulesInProduction[i]).First() as GroupSymbol;
foreach (var subProduction in ruleGroupSymbol.SymbolsCollection) {
treeGrammar.AddAllowedChildSymbol(cfgProduction, subProduction, i);
}
}
}
return treeGrammar;
}