private void GenerateMethodBody(ILGenerator generator, Operation operation,
IFunctionRegistry functionRegistry)
{
if (operation == null)
{
throw new ArgumentNullException("operation");
}
if (operation.GetType() == typeof(IntegerConstant))
{
IntegerConstant constant = (IntegerConstant)operation;
generator.Emit(OpCodes.Ldc_I4, constant.Value);
generator.Emit(OpCodes.Conv_R8);
}
else if (operation.GetType() == typeof(FloatingPointConstant))
{
FloatingPointConstant constant = (FloatingPointConstant)operation;
generator.Emit(OpCodes.Ldc_R8, constant.Value);
}
else if (operation.GetType() == typeof(Variable))
{
Type dictionaryType = typeof(IDictionary <string, double>);
Variable variable = (Variable)operation;
Label throwExceptionLabel = generator.DefineLabel();
Label returnLabel = generator.DefineLabel();
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Callvirt, typeof(FormulaContext).GetProperty("Variables").GetGetMethod());
generator.Emit(OpCodes.Ldstr, variable.Name);
generator.Emit(OpCodes.Ldloca_S, (byte)0);
generator.Emit(OpCodes.Callvirt, dictionaryType.GetMethod("TryGetValue", new Type[] { typeof(string), typeof(double).MakeByRefType() }));
generator.Emit(OpCodes.Ldc_I4_0);
generator.Emit(OpCodes.Ceq);
generator.Emit(OpCodes.Brtrue_S, throwExceptionLabel);
generator.Emit(OpCodes.Ldloc_0);
generator.Emit(OpCodes.Br_S, returnLabel);
generator.MarkLabel(throwExceptionLabel);
generator.Emit(OpCodes.Ldstr, string.Format("The variable \"{0}\" used is not defined.", variable.Name));
generator.Emit(OpCodes.Newobj, typeof(VariableNotDefinedException).GetConstructor(new Type[] { typeof(string) }));
generator.Emit(OpCodes.Throw);
generator.MarkLabel(returnLabel);
}
else if (operation.GetType() == typeof(Multiplication))
{
Multiplication multiplication = (Multiplication)operation;
GenerateMethodBody(generator, multiplication.Argument1, functionRegistry);
GenerateMethodBody(generator, multiplication.Argument2, functionRegistry);
generator.Emit(OpCodes.Mul);
}
else if (operation.GetType() == typeof(Addition))
{
Addition addition = (Addition)operation;
GenerateMethodBody(generator, addition.Argument1, functionRegistry);
GenerateMethodBody(generator, addition.Argument2, functionRegistry);
generator.Emit(OpCodes.Add);
}
else if (operation.GetType() == typeof(Subtraction))
{
Subtraction addition = (Subtraction)operation;
GenerateMethodBody(generator, addition.Argument1, functionRegistry);
GenerateMethodBody(generator, addition.Argument2, functionRegistry);
generator.Emit(OpCodes.Sub);
}
else if (operation.GetType() == typeof(Division))
{
Division division = (Division)operation;
GenerateMethodBody(generator, division.Dividend, functionRegistry);
GenerateMethodBody(generator, division.Divisor, functionRegistry);
generator.Emit(OpCodes.Div);
}
else if (operation.GetType() == typeof(Modulo))
{
Modulo modulo = (Modulo)operation;
GenerateMethodBody(generator, modulo.Dividend, functionRegistry);
GenerateMethodBody(generator, modulo.Divisor, functionRegistry);
generator.Emit(OpCodes.Rem);
}
else if (operation.GetType() == typeof(Exponentiation))
{
Exponentiation exponentation = (Exponentiation)operation;
GenerateMethodBody(generator, exponentation.Base, functionRegistry);
GenerateMethodBody(generator, exponentation.Exponent, functionRegistry);
generator.Emit(OpCodes.Call, typeof(Math).GetMethod("Pow"));
}
else if (operation.GetType() == typeof(UnaryMinus))
{
UnaryMinus unaryMinus = (UnaryMinus)operation;
GenerateMethodBody(generator, unaryMinus.Argument, functionRegistry);
generator.Emit(OpCodes.Neg);
}
else if (operation.GetType() == typeof(LessThan))
{
LessThan lessThan = (LessThan)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, lessThan.Argument1, functionRegistry);
GenerateMethodBody(generator, lessThan.Argument2, functionRegistry);
generator.Emit(OpCodes.Blt_S, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(LessOrEqualThan))
{
LessOrEqualThan lessOrEqualThan = (LessOrEqualThan)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, lessOrEqualThan.Argument1, functionRegistry);
GenerateMethodBody(generator, lessOrEqualThan.Argument2, functionRegistry);
generator.Emit(OpCodes.Ble_S, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(GreaterThan))
{
GreaterThan greaterThan = (GreaterThan)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, greaterThan.Argument1, functionRegistry);
GenerateMethodBody(generator, greaterThan.Argument2, functionRegistry);
generator.Emit(OpCodes.Bgt_S, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(GreaterOrEqualThan))
{
GreaterOrEqualThan greaterOrEqualThan = (GreaterOrEqualThan)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, greaterOrEqualThan.Argument1, functionRegistry);
GenerateMethodBody(generator, greaterOrEqualThan.Argument2, functionRegistry);
generator.Emit(OpCodes.Bge_S, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(Equal))
{
Equal equal = (Equal)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, equal.Argument1, functionRegistry);
GenerateMethodBody(generator, equal.Argument2, functionRegistry);
generator.Emit(OpCodes.Beq_S, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(NotEqual))
{
NotEqual notEqual = (NotEqual)operation;
Label ifLabel = generator.DefineLabel();
Label endLabel = generator.DefineLabel();
GenerateMethodBody(generator, notEqual.Argument1, functionRegistry);
GenerateMethodBody(generator, notEqual.Argument2, functionRegistry);
generator.Emit(OpCodes.Beq, ifLabel);
generator.Emit(OpCodes.Ldc_R8, 1.0);
generator.Emit(OpCodes.Br_S, endLabel);
generator.MarkLabel(ifLabel);
generator.Emit(OpCodes.Ldc_R8, 0.0);
generator.MarkLabel(endLabel);
}
else if (operation.GetType() == typeof(Function))
{
Function function = (Function)operation;
FunctionInfo functionInfo = functionRegistry.GetFunctionInfo(function.FunctionName);
Type funcType = GetFuncType(functionInfo.NumberOfParameters);
generator.Emit(OpCodes.Ldarg_0);
generator.Emit(OpCodes.Callvirt, typeof(FormulaContext).GetProperty("FunctionRegistry").GetGetMethod());
generator.Emit(OpCodes.Ldstr, function.FunctionName);
generator.Emit(OpCodes.Callvirt, typeof(IFunctionRegistry).GetMethod("GetFunctionInfo", new Type[] { typeof(string) }));
generator.Emit(OpCodes.Callvirt, typeof(FunctionInfo).GetProperty("Function").GetGetMethod());
generator.Emit(OpCodes.Castclass, funcType);
for (int i = 0; i < functionInfo.NumberOfParameters; i++)
{
GenerateMethodBody(generator, function.Arguments[i], functionRegistry);
}
generator.Emit(OpCodes.Call, funcType.GetMethod("Invoke"));
}
else
{
throw new ArgumentException(string.Format("Unsupported operation \"{0}\".", operation.GetType().FullName), "operation");
}
}
static void Main(string[] args)
{
RunConfig runConfig;
if (!TryParseArguments(args, out runConfig))
{
Usage();
return;
}
var code = File.ReadAllText(args[0]);
var pageState = new GraphicsState();
var stack = new LinearList <IOperation>();
var execStack = new LinearList <IOperation>();
var dictStack = new LinearList <IDictionary <string, IOperation> >();
var system = new Dictionary <string, IOperation>();
system["add"] = new Add();
system["sub"] = new Substract();
system["mul"] = new Multiplicate();
system["div"] = new Divide();
system["mod"] = new Mod();
system["def"] = new Define();
system["for"] = new For();
system["dup"] = new Duplicate();
system["index"] = new Index();
system["pop"] = new Pop();
system["exch"] = new Exchange();
system["repeat"] = new Repeat();
system["array"] = new EmptyArray();
system["astore"] = new LoadArray();
system["rand"] = new Rand();
system["cvi"] = new ConvertToInteger();
system["copy"] = new Copy();
system["roll"] = new Roll();
system["get"] = new ArrayGet();
system["put"] = new ArrayPut();
system["ne"] = new NotEqual();
system["eq"] = new Equal();
system["or"] = new Or();
system["ifelse"] = new IfElse();
system["if"] = new If();
system["neg"] = new Neg();
system["not"] = new Not();
system["sqrt"] = new Sqrt();
system["lt"] = new LessThan();
system["ge"] = new GreaterOrEqualThan();
dictStack.Push(system);
var graphics = new Dictionary <string, IOperation>();
graphics["newpath"] = new NewPath(pageState);
graphics["closepath"] = new ClosePath(pageState);
graphics["fillpath"] = new FillPath(pageState);
graphics["setgray"] = new SetGray(pageState);
graphics["setrgbcolor"] = new SetRGB(pageState);
graphics["setlinewidth"] = new SetLineWidth(pageState);
graphics["fill"] = new FillPath(pageState);
graphics["showpage"] = new ShowPage(pageState);
graphics["moveto"] = new MoveTo(pageState);
graphics["lineto"] = new LineTo(pageState);
graphics["rlineto"] = new RelativeLineTo(pageState);
graphics["gsave"] = new SaveGraphicsState(pageState);
graphics["grestore"] = new RestoreGraphicsState(pageState);
graphics["stroke"] = new StrokePath(pageState);
graphics["curveto"] = new CurveTo(pageState);
graphics["arc"] = new Arc(pageState);
dictStack.Push(graphics);
dictStack.Push(new Dictionary <string, IOperation>());
//execStack.Push(start);
CodeParser.LoadCode(execStack,
@"
/findfont { pop (somefont) } def
/scalefont { exch pop } def
/setfont { pop } def
/setlinecap { pop } def
/srand { pop } def
");
CodeParser.LoadCode(execStack, code);
var state = new PreScriptState(stack, execStack, dictStack);
while (execStack.Count > 0)
{
var operation = execStack.Pop();
operation.Process(state);
}
}
private Expression GenerateMethodBody(Operation operation, ParameterExpression contextParameter,
IFunctionRegistry functionRegistry)
{
if (operation == null)
{
throw new ArgumentNullException("operation");
}
if (operation.GetType() == typeof(IntegerConstant))
{
IntegerConstant constant = (IntegerConstant)operation;
double value = constant.Value;
return(Expression.Constant(value, typeof(double)));
}
else if (operation.GetType() == typeof(FloatingPointConstant))
{
FloatingPointConstant constant = (FloatingPointConstant)operation;
return(Expression.Constant(constant.Value, typeof(double)));
}
else if (operation.GetType() == typeof(Variable))
{
Variable variable = (Variable)operation;
Func <string, FormulaContext, double> getVariableValueOrThrow = PrecompiledMethods.GetVariableValueOrThrow;
return(Expression.Call(null,
getVariableValueOrThrow.GetMethodInfo(),
Expression.Constant(variable.Name),
contextParameter));
}
else if (operation.GetType() == typeof(Multiplication))
{
Multiplication multiplication = (Multiplication)operation;
Expression argument1 = GenerateMethodBody(multiplication.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(multiplication.Argument2, contextParameter, functionRegistry);
return(Expression.Multiply(argument1, argument2));
}
else if (operation.GetType() == typeof(Addition))
{
Addition addition = (Addition)operation;
Expression argument1 = GenerateMethodBody(addition.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(addition.Argument2, contextParameter, functionRegistry);
return(Expression.Add(argument1, argument2));
}
else if (operation.GetType() == typeof(Subtraction))
{
Subtraction addition = (Subtraction)operation;
Expression argument1 = GenerateMethodBody(addition.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(addition.Argument2, contextParameter, functionRegistry);
return(Expression.Subtract(argument1, argument2));
}
else if (operation.GetType() == typeof(Division))
{
Division division = (Division)operation;
Expression dividend = GenerateMethodBody(division.Dividend, contextParameter, functionRegistry);
Expression divisor = GenerateMethodBody(division.Divisor, contextParameter, functionRegistry);
return(Expression.Divide(dividend, divisor));
}
else if (operation.GetType() == typeof(Modulo))
{
Modulo modulo = (Modulo)operation;
Expression dividend = GenerateMethodBody(modulo.Dividend, contextParameter, functionRegistry);
Expression divisor = GenerateMethodBody(modulo.Divisor, contextParameter, functionRegistry);
return(Expression.Modulo(dividend, divisor));
}
else if (operation.GetType() == typeof(Exponentiation))
{
Exponentiation exponentation = (Exponentiation)operation;
Expression @base = GenerateMethodBody(exponentation.Base, contextParameter, functionRegistry);
Expression exponent = GenerateMethodBody(exponentation.Exponent, contextParameter, functionRegistry);
return(Expression.Call(null, typeof(Math).GetRuntimeMethod("Pow", new Type[] { typeof(double), typeof(double) }), @base, exponent));
}
else if (operation.GetType() == typeof(UnaryMinus))
{
UnaryMinus unaryMinus = (UnaryMinus)operation;
Expression argument = GenerateMethodBody(unaryMinus.Argument, contextParameter, functionRegistry);
return(Expression.Negate(argument));
}
else if (operation.GetType() == typeof(And))
{
And and = (And)operation;
Expression argument1 = Expression.NotEqual(GenerateMethodBody(and.Argument1, contextParameter, functionRegistry), Expression.Constant(0.0));
Expression argument2 = Expression.NotEqual(GenerateMethodBody(and.Argument2, contextParameter, functionRegistry), Expression.Constant(0.0));
return(Expression.Condition(Expression.And(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Or))
{
Or and = (Or)operation;
Expression argument1 = Expression.NotEqual(GenerateMethodBody(and.Argument1, contextParameter, functionRegistry), Expression.Constant(0.0));
Expression argument2 = Expression.NotEqual(GenerateMethodBody(and.Argument2, contextParameter, functionRegistry), Expression.Constant(0.0));
return(Expression.Condition(Expression.Or(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(LessThan))
{
LessThan lessThan = (LessThan)operation;
Expression argument1 = GenerateMethodBody(lessThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(lessThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.LessThan(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(LessOrEqualThan))
{
LessOrEqualThan lessOrEqualThan = (LessOrEqualThan)operation;
Expression argument1 = GenerateMethodBody(lessOrEqualThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(lessOrEqualThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.LessThanOrEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(GreaterThan))
{
GreaterThan greaterThan = (GreaterThan)operation;
Expression argument1 = GenerateMethodBody(greaterThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(greaterThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.GreaterThan(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(GreaterOrEqualThan))
{
GreaterOrEqualThan greaterOrEqualThan = (GreaterOrEqualThan)operation;
Expression argument1 = GenerateMethodBody(greaterOrEqualThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(greaterOrEqualThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.GreaterThanOrEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Equal))
{
Equal equal = (Equal)operation;
Expression argument1 = GenerateMethodBody(equal.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(equal.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.Equal(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(NotEqual))
{
NotEqual notEqual = (NotEqual)operation;
Expression argument1 = GenerateMethodBody(notEqual.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(notEqual.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.NotEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Function))
{
Function function = (Function)operation;
FunctionInfo functionInfo = functionRegistry.GetFunctionInfo(function.FunctionName);
Type funcType;
Type[] parameterTypes;
Expression[] arguments;
if (functionInfo.IsDynamicFunc)
{
funcType = typeof(DynamicFunc <double, double>);
parameterTypes = new Type[] { typeof(double[]) };
Expression[] arrayArguments = new Expression[function.Arguments.Count];
for (int i = 0; i < function.Arguments.Count; i++)
{
arrayArguments[i] = GenerateMethodBody(function.Arguments[i], contextParameter, functionRegistry);
}
arguments = new Expression[1];
arguments[0] = NewArrayExpression.NewArrayInit(typeof(double), arrayArguments);
}
else
{
funcType = GetFuncType(functionInfo.NumberOfParameters);
parameterTypes = (from i in Enumerable.Range(0, functionInfo.NumberOfParameters)
select typeof(double)).ToArray();
arguments = new Expression[functionInfo.NumberOfParameters];
for (int i = 0; i < functionInfo.NumberOfParameters; i++)
{
arguments[i] = GenerateMethodBody(function.Arguments[i], contextParameter, functionRegistry);
}
}
Expression getFunctionRegistry = Expression.Property(contextParameter, "FunctionRegistry");
ParameterExpression functionInfoVariable = Expression.Variable(typeof(FunctionInfo));
Expression funcInstance;
if (!functionInfo.IsOverWritable)
{
funcInstance = Expression.Convert(
Expression.Property(
Expression.Call(
getFunctionRegistry,
typeof(IFunctionRegistry).GetRuntimeMethod("GetFunctionInfo", new Type[] { typeof(string) }),
Expression.Constant(function.FunctionName)),
"Function"),
funcType);
}
else
{
funcInstance = Expression.Constant(functionInfo.Function, funcType);
}
return(Expression.Call(
funcInstance,
funcType.GetRuntimeMethod("Invoke", parameterTypes),
arguments));
}
else
{
throw new ArgumentException(string.Format("Unsupported operation \"{0}\".", operation.GetType().FullName), "operation");
}
}
public double Execute(Operation operation,
IFunctionRegistry functionRegistry,
IConstantRegistry constantRegistry,
IDictionary <string, double> variables)
{
if (operation == null)
{
throw new ArgumentNullException("operation");
}
if (operation.GetType() == typeof(IntegerConstant))
{
IntegerConstant constant = (IntegerConstant)operation;
return(constant.Value);
}
else if (operation.GetType() == typeof(FloatingPointConstant))
{
FloatingPointConstant constant = (FloatingPointConstant)operation;
return(constant.Value);
}
else if (operation.GetType() == typeof(Variable))
{
Variable variable = (Variable)operation;
double value;
bool variableFound = variables.TryGetValue(variable.Name, out value);
if (variableFound)
{
return(value);
}
else
{
throw new VariableNotDefinedException(string.Format("The variable \"{0}\" used is not defined.", variable.Name));
}
}
else if (operation.GetType() == typeof(Multiplication))
{
Multiplication multiplication = (Multiplication)operation;
return(Execute(multiplication.Argument1, functionRegistry, constantRegistry, variables) * Execute(multiplication.Argument2, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(Addition))
{
Addition addition = (Addition)operation;
return(Execute(addition.Argument1, functionRegistry, constantRegistry, variables) + Execute(addition.Argument2, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(Subtraction))
{
Subtraction addition = (Subtraction)operation;
return(Execute(addition.Argument1, functionRegistry, constantRegistry, variables) - Execute(addition.Argument2, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(Division))
{
Division division = (Division)operation;
return(Execute(division.Dividend, functionRegistry, constantRegistry, variables) / Execute(division.Divisor, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(Modulo))
{
Modulo division = (Modulo)operation;
return(Execute(division.Dividend, functionRegistry, constantRegistry, variables) % Execute(division.Divisor, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(Exponentiation))
{
Exponentiation exponentiation = (Exponentiation)operation;
return(Math.Pow(Execute(exponentiation.Base, functionRegistry, constantRegistry, variables), Execute(exponentiation.Exponent, functionRegistry, constantRegistry, variables)));
}
else if (operation.GetType() == typeof(UnaryMinus))
{
UnaryMinus unaryMinus = (UnaryMinus)operation;
return(-Execute(unaryMinus.Argument, functionRegistry, constantRegistry, variables));
}
else if (operation.GetType() == typeof(And))
{
And and = (And)operation;
var operation1 = Execute(and.Argument1, functionRegistry, constantRegistry, variables) != 0;
var operation2 = Execute(and.Argument2, functionRegistry, constantRegistry, variables) != 0;
return((operation1 && operation2) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(Or))
{
Or or = (Or)operation;
var operation1 = Execute(or.Argument1, functionRegistry, constantRegistry, variables) != 0;
var operation2 = Execute(or.Argument2, functionRegistry, constantRegistry, variables) != 0;
return((operation1 || operation2) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(LessThan))
{
LessThan lessThan = (LessThan)operation;
return((Execute(lessThan.Argument1, functionRegistry, constantRegistry, variables) < Execute(lessThan.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(LessOrEqualThan))
{
LessOrEqualThan lessOrEqualThan = (LessOrEqualThan)operation;
return((Execute(lessOrEqualThan.Argument1, functionRegistry, constantRegistry, variables) <= Execute(lessOrEqualThan.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(GreaterThan))
{
GreaterThan greaterThan = (GreaterThan)operation;
return((Execute(greaterThan.Argument1, functionRegistry, constantRegistry, variables) > Execute(greaterThan.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(GreaterOrEqualThan))
{
GreaterOrEqualThan greaterOrEqualThan = (GreaterOrEqualThan)operation;
return((Execute(greaterOrEqualThan.Argument1, functionRegistry, constantRegistry, variables) >= Execute(greaterOrEqualThan.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(Equal))
{
Equal equal = (Equal)operation;
return((Execute(equal.Argument1, functionRegistry, constantRegistry, variables) == Execute(equal.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(NotEqual))
{
NotEqual notEqual = (NotEqual)operation;
return((Execute(notEqual.Argument1, functionRegistry, constantRegistry, variables) != Execute(notEqual.Argument2, functionRegistry, constantRegistry, variables)) ? 1.0 : 0.0);
}
else if (operation.GetType() == typeof(Function))
{
Function function = (Function)operation;
FunctionInfo functionInfo = functionRegistry.GetFunctionInfo(function.FunctionName);
double[] arguments = new double[functionInfo.IsDynamicFunc ? function.Arguments.Count : functionInfo.NumberOfParameters];
for (int i = 0; i < arguments.Length; i++)
{
arguments[i] = Execute(function.Arguments[i], functionRegistry, constantRegistry, variables);
}
return(Invoke(functionInfo.Function, arguments));
}
else
{
throw new ArgumentException(string.Format("Unsupported operation \"{0}\".", operation.GetType().FullName), "operation");
}
}
public VariableCalcurator Execute(Operation operation, IFunctionRegistry functionRegistry,
IDictionary <string, VariableCalcurator> variables)
{
VariableCalcurator.defaultVariables = variables;
if (operation == null)
{
throw new ArgumentNullException("operation");
}
/*
* if (operation.GetType() == typeof(IntegerConstant))
* {
* IntegerConstant constant = (IntegerConstant)operation;
* return constant.Value;
* }
* else if (operation.GetType() == typeof(FloatingPointConstant))
* {
* FloatingPointConstant constant = (FloatingPointConstant)operation;
* return constant.Value;
* }
* else*/
if (operation.GetType() == typeof(VariableCalcurator))
{
VariableCalcurator variable = (VariableCalcurator)operation;
/*
* if (variable.DataType == DataType.Literal)
* return new VariableCalcurator(DataType.Literal, variable.Literal());
* else if(variable.DataType == DataType.Identifier)
* {
* bool variableFound = variables.ContainsKey(variable.Literal());
*
* if (variableFound)
* return variables[variable.Literal()];
*
* else
* return variable;
* throw new VariableNotDefinedException(string.Format("The variable \"{0}\" used is not defined.", variable.Literal()));
* }
*/
return(variable);
}
else if (operation.GetType() == typeof(Multiplication))
{
Multiplication multiplication = (Multiplication)operation;
return(Execute(multiplication.Argument1, functionRegistry, variables).GetInstance() * Execute(multiplication.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Addition))
{
Addition addition = (Addition)operation;
return(Execute(addition.Argument1, functionRegistry, variables).GetInstance() + Execute(addition.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Subtraction))
{
Subtraction addition = (Subtraction)operation;
return(Execute(addition.Argument1, functionRegistry, variables).GetInstance() - Execute(addition.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Division))
{
Division division = (Division)operation;
return(Execute(division.Dividend, functionRegistry, variables).GetInstance() / Execute(division.Divisor, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Modulo))
{
Modulo division = (Modulo)operation;
return(Execute(division.Dividend, functionRegistry, variables).GetInstance() % Execute(division.Divisor, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Exponentiation))
{
Exponentiation exponentiation = (Exponentiation)operation;
return(new VariableCalcurator((float)Math.Pow(Execute(exponentiation.Base, functionRegistry, variables).GetInstance().Float(), Execute(exponentiation.Exponent, functionRegistry, variables).GetInstance().Float())));
}
else if (operation.GetType() == typeof(UnaryMinus))
{
UnaryMinus unaryMinus = (UnaryMinus)operation;
return(-Execute(unaryMinus.Argument, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(LessThan))
{
LessThan lessThan = (LessThan)operation;
return(Execute(lessThan.Argument1, functionRegistry, variables).GetInstance() < Execute(lessThan.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(LessOrEqualThan))
{
LessOrEqualThan lessOrEqualThan = (LessOrEqualThan)operation;
return(Execute(lessOrEqualThan.Argument1, functionRegistry, variables).GetInstance() <= Execute(lessOrEqualThan.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(GreaterThan))
{
GreaterThan greaterThan = (GreaterThan)operation;
return(Execute(greaterThan.Argument1, functionRegistry, variables).GetInstance() > Execute(greaterThan.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(GreaterOrEqualThan))
{
GreaterOrEqualThan greaterOrEqualThan = (GreaterOrEqualThan)operation;
return(Execute(greaterOrEqualThan.Argument1, functionRegistry, variables).GetInstance() >= Execute(greaterOrEqualThan.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Equal))
{
Equal equal = (Equal)operation;
return(Execute(equal.Argument1, functionRegistry, variables).GetInstance() == Execute(equal.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(NotEqual))
{
NotEqual notEqual = (NotEqual)operation;
return(Execute(notEqual.Argument1, functionRegistry, variables).GetInstance() != Execute(notEqual.Argument2, functionRegistry, variables).GetInstance());
}
else if (operation.GetType() == typeof(Index))
{
Index index = (Index)operation;
return(Index(Execute(index.Argument1, functionRegistry, variables), Execute(index.Argument2, functionRegistry, variables), variables));
}
else if (operation.GetType() == typeof(Substitution))
{
Substitution substitution = (Substitution)operation;
return(Substitute(Execute(substitution.Argument1, functionRegistry, variables), Execute(substitution.Argument2, functionRegistry, variables), variables));
}
/*
* else if (operation.GetType() == typeof(Function))
* {
* Function function = (Function)operation;
*
* FunctionInfo functionInfo = functionRegistry.GetFunctionInfo(function.FunctionName);
*
* double[] arguments = new double[functionInfo.IsDynamicFunc ? function.Arguments.Count : functionInfo.NumberOfParameters];
* for (int i = 0; i < arguments.Length; i++)
* arguments[i] = Execute(function.Arguments[i], functionRegistry, variables);
*
* return Invoke(functionInfo.Function, arguments);
* }
*/
else
{
throw new ArgumentException(string.Format("Unsupported operation \"{0}\".", operation.GetType().FullName), "operation");
}
}
public void Execute(GreaterOrEqualThan cmd)
{
cmd.Result.Value = cmd.Op1.Value >= cmd.Op2.Value;
}
private Expression GenerateMethodBody(Operation operation, ParameterExpression contextParameter,
IFunctionRegistry functionRegistry)
{
if (operation == null)
{
throw new ArgumentNullException("operation");
}
if (operation.GetType() == typeof(IntegerConstant))
{
IntegerConstant constant = (IntegerConstant)operation;
return(Expression.Convert(Expression.Constant(constant.Value, typeof(int)), typeof(double)));
}
else if (operation.GetType() == typeof(FloatingPointConstant))
{
FloatingPointConstant constant = (FloatingPointConstant)operation;
return(Expression.Constant(constant.Value, typeof(double)));
}
else if (operation.GetType() == typeof(Variable))
{
Type contextType = typeof(FormulaContext);
Type dictionaryType = typeof(IDictionary <string, double>);
Variable variable = (Variable)operation;
Expression getVariables = Expression.Property(contextParameter, "Variables");
ParameterExpression value = Expression.Variable(typeof(double), "value");
Expression variableFound = Expression.Call(getVariables,
dictionaryType.GetRuntimeMethod("TryGetValue", new Type[] { typeof(string), typeof(double).MakeByRefType() }),
Expression.Constant(variable.Name),
value);
Expression throwException = Expression.Throw(
Expression.New(typeof(VariableNotDefinedException).GetConstructor(new Type[] { typeof(string) }),
Expression.Constant(string.Format("The variable \"{0}\" used is not defined.", variable.Name))));
LabelTarget returnLabel = Expression.Label(typeof(double));
return(Expression.Block(
new[] { value },
Expression.IfThenElse(
variableFound,
Expression.Return(returnLabel, value),
throwException
),
Expression.Label(returnLabel, Expression.Constant(0.0))
));
}
else if (operation.GetType() == typeof(Multiplication))
{
Multiplication multiplication = (Multiplication)operation;
Expression argument1 = GenerateMethodBody(multiplication.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(multiplication.Argument2, contextParameter, functionRegistry);
return(Expression.Multiply(argument1, argument2));
}
else if (operation.GetType() == typeof(Addition))
{
Addition addition = (Addition)operation;
Expression argument1 = GenerateMethodBody(addition.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(addition.Argument2, contextParameter, functionRegistry);
return(Expression.Add(argument1, argument2));
}
else if (operation.GetType() == typeof(Subtraction))
{
Subtraction addition = (Subtraction)operation;
Expression argument1 = GenerateMethodBody(addition.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(addition.Argument2, contextParameter, functionRegistry);
return(Expression.Subtract(argument1, argument2));
}
else if (operation.GetType() == typeof(Division))
{
Division division = (Division)operation;
Expression dividend = GenerateMethodBody(division.Dividend, contextParameter, functionRegistry);
Expression divisor = GenerateMethodBody(division.Divisor, contextParameter, functionRegistry);
return(Expression.Divide(dividend, divisor));
}
else if (operation.GetType() == typeof(Modulo))
{
Modulo modulo = (Modulo)operation;
Expression dividend = GenerateMethodBody(modulo.Dividend, contextParameter, functionRegistry);
Expression divisor = GenerateMethodBody(modulo.Divisor, contextParameter, functionRegistry);
return(Expression.Modulo(dividend, divisor));
}
else if (operation.GetType() == typeof(Exponentiation))
{
Exponentiation exponentation = (Exponentiation)operation;
Expression @base = GenerateMethodBody(exponentation.Base, contextParameter, functionRegistry);
Expression exponent = GenerateMethodBody(exponentation.Exponent, contextParameter, functionRegistry);
return(Expression.Call(null, typeof(Math).GetRuntimeMethod("Pow", new Type[] { typeof(double), typeof(double) }), @base, exponent));
}
else if (operation.GetType() == typeof(UnaryMinus))
{
UnaryMinus unaryMinus = (UnaryMinus)operation;
Expression argument = GenerateMethodBody(unaryMinus.Argument, contextParameter, functionRegistry);
return(Expression.Negate(argument));
}
else if (operation.GetType() == typeof(And))
{
And and = (And)operation;
Expression argument1 = Expression.NotEqual(GenerateMethodBody(and.Argument1, contextParameter, functionRegistry), Expression.Constant(0.0));
Expression argument2 = Expression.NotEqual(GenerateMethodBody(and.Argument2, contextParameter, functionRegistry), Expression.Constant(0.0));
return(Expression.Condition(Expression.And(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Or))
{
Or and = (Or)operation;
Expression argument1 = Expression.NotEqual(GenerateMethodBody(and.Argument1, contextParameter, functionRegistry), Expression.Constant(0.0));
Expression argument2 = Expression.NotEqual(GenerateMethodBody(and.Argument2, contextParameter, functionRegistry), Expression.Constant(0.0));
return(Expression.Condition(Expression.Or(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(LessThan))
{
LessThan lessThan = (LessThan)operation;
Expression argument1 = GenerateMethodBody(lessThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(lessThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.LessThan(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(LessOrEqualThan))
{
LessOrEqualThan lessOrEqualThan = (LessOrEqualThan)operation;
Expression argument1 = GenerateMethodBody(lessOrEqualThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(lessOrEqualThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.LessThanOrEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(GreaterThan))
{
GreaterThan greaterThan = (GreaterThan)operation;
Expression argument1 = GenerateMethodBody(greaterThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(greaterThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.GreaterThan(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(GreaterOrEqualThan))
{
GreaterOrEqualThan greaterOrEqualThan = (GreaterOrEqualThan)operation;
Expression argument1 = GenerateMethodBody(greaterOrEqualThan.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(greaterOrEqualThan.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.GreaterThanOrEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Equal))
{
Equal equal = (Equal)operation;
Expression argument1 = GenerateMethodBody(equal.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(equal.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.Equal(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(NotEqual))
{
NotEqual notEqual = (NotEqual)operation;
Expression argument1 = GenerateMethodBody(notEqual.Argument1, contextParameter, functionRegistry);
Expression argument2 = GenerateMethodBody(notEqual.Argument2, contextParameter, functionRegistry);
return(Expression.Condition(Expression.NotEqual(argument1, argument2),
Expression.Constant(1.0),
Expression.Constant(0.0)));
}
else if (operation.GetType() == typeof(Function))
{
Function function = (Function)operation;
FunctionInfo functionInfo = functionRegistry.GetFunctionInfo(function.FunctionName);
Type funcType;
Type[] parameterTypes;
Expression[] arguments;
if (functionInfo.IsDynamicFunc)
{
funcType = typeof(DynamicFunc <double, double>);
parameterTypes = new Type[] { typeof(double[]) };
Expression[] arrayArguments = new Expression[function.Arguments.Count];
for (int i = 0; i < function.Arguments.Count; i++)
{
arrayArguments[i] = GenerateMethodBody(function.Arguments[i], contextParameter, functionRegistry);
}
arguments = new Expression[1];
arguments[0] = NewArrayExpression.NewArrayInit(typeof(double), arrayArguments);
}
else
{
funcType = GetFuncType(functionInfo.NumberOfParameters);
parameterTypes = (from i in Enumerable.Range(0, functionInfo.NumberOfParameters)
select typeof(double)).ToArray();
arguments = new Expression[functionInfo.NumberOfParameters];
for (int i = 0; i < functionInfo.NumberOfParameters; i++)
{
arguments[i] = GenerateMethodBody(function.Arguments[i], contextParameter, functionRegistry);
}
}
Expression getFunctionRegistry = Expression.Property(contextParameter, "FunctionRegistry");
ParameterExpression functionInfoVariable = Expression.Variable(typeof(FunctionInfo));
return(Expression.Block(
new[] { functionInfoVariable },
Expression.Assign(
functionInfoVariable,
Expression.Call(getFunctionRegistry, typeof(IFunctionRegistry).GetRuntimeMethod("GetFunctionInfo", new Type[] { typeof(string) }), Expression.Constant(function.FunctionName))
),
Expression.Call(
Expression.Convert(Expression.Property(functionInfoVariable, "Function"), funcType),
funcType.GetRuntimeMethod("Invoke", parameterTypes),
arguments)));
}
else
{
throw new ArgumentException(string.Format("Unsupported operation \"{0}\".", operation.GetType().FullName), "operation");
}
}
public void Execute(GreaterOrEqualThan cmd)
{
_file.WriteLine($"{_indents}GreaterOrEqual\tOp1:{cmd.Op1.Name},Op2:{cmd.Op2.Name},Result:{cmd.Result.Name}");
}
