private static void DumpValueExpression(StringWriter s, SBExpression expression, string ident = " ")
{
if (expression is NegativeExpression)
{
NegativeExpression negativeExpression = (NegativeExpression)expression;
s.WriteLine(ident + $"-----> Expression: {negativeExpression.Expression.Dump()}");
DumpValueExpression(s, negativeExpression.Expression, ident + " ");
}
else if (expression is BinaryExpression)
{
BinaryExpression binaryExpression = (BinaryExpression)expression;
s.WriteLine(ident + $"-----> Operator: {binaryExpression.Operator.Dump()}");
s.WriteLine(ident + $"-----> LeftHandSide: {binaryExpression.LeftHandSide.Dump()}");
DumpValueExpression(s, binaryExpression.LeftHandSide, ident + " ");
s.WriteLine(ident + $"-----> RightHandSide: {binaryExpression.RightHandSide.Dump()}");
DumpValueExpression(s, binaryExpression.RightHandSide, ident + " ");
}
else if (expression is MethodCallExpression)
{
MethodCallExpression methodCallExpression = (MethodCallExpression)expression;
s.WriteLine($"{ident}-----> MethodName: {methodCallExpression.MethodName.Dump()}");
s.WriteLine($"{ident}-----> TypeName: {methodCallExpression.TypeName.Dump()}");
s.WriteLine($"{ident}-----> Arguments: {methodCallExpression.Arguments}");
}
else if (expression is PropertyExpression)
{
PropertyExpression propertyExpression = (PropertyExpression)expression;
s.WriteLine($"{ident}-----> PropertyName: {propertyExpression.PropertyName.Dump()}");
s.WriteLine($"{ident}-----> TypeName: {propertyExpression.TypeName.Dump()}");
}
}
public static IEnumerable <SBExpression> GetSubExpressions(this SBExpression expression)
{
if (expression is NegativeExpression)
{
NegativeExpression negativeExpression = (NegativeExpression)expression;
return(new SBExpression[] { negativeExpression.Expression }.Concat(negativeExpression.Expression.GetSubExpressions()));
}
else if (expression is BinaryExpression)
{
BinaryExpression binaryExpression = (BinaryExpression)expression;
return(new SBExpression[] { binaryExpression.LeftHandSide, binaryExpression.RightHandSide }
.Concat(binaryExpression.LeftHandSide.GetSubExpressions())
.Concat(binaryExpression.RightHandSide.GetSubExpressions()));
}
else if (expression is ArrayExpression)
{
ArrayExpression arrayExpression = (ArrayExpression)expression;
return(new SBExpression[] { arrayExpression.LeftHand, arrayExpression.Indexer }
.Concat(arrayExpression.LeftHand.GetSubExpressions())
.Concat(arrayExpression.Indexer.GetSubExpressions()));
}
else if (expression is MethodCallExpression)
{
MethodCallExpression methodCallExpression = (MethodCallExpression)expression;
return(methodCallExpression.Arguments
.Concat(methodCallExpression.Arguments.SelectMany(a => a.GetSubExpressions())));
}
else
{
return(new SBExpression[0]);
}
}
public static string Dump(this SBExpression expression)
{
if (expression == null)
{
return("NO EXPRESSION");
}
else
{
return($"{expression.GetType().Name}[{expression.StartToken},{expression.EndToken}]:{expression} --> {(expression.HasCompiler() ? expression.Compiler().ToString() : "NO COMPILER")}");
}
}
public static bool IsVariable(this SBExpression expression, EV3Variable variable)
{
if (expression is IdentifierExpression)
{
return(variable.Name.Equals(((IdentifierExpression)expression).VariableName(), StringComparison.InvariantCultureIgnoreCase));
}
else if (expression is ArrayExpression)
{
return(variable.Name.Equals(((ArrayExpression)expression).VariableName(), StringComparison.InvariantCultureIgnoreCase));
}
return(false);
}
private static void AttachCompiler(this SBExpression expression, EV3CompilerContext context)
{
if (expression == null)
{
return;
}
if (expression is ArrayExpression)
{
expression.AttachCompiler(new ArrayExpressionCompiler((ArrayExpression)expression, context));
}
else if (expression is BinaryExpression)
{
BinaryExpression binaryExpression = (BinaryExpression)expression;
if (binaryExpression.IsBooleanOperator())
{
expression.AttachCompiler(new BooleanExpressionCompiler(binaryExpression, context));
}
else if (binaryExpression.IsBooleanCompareOperator())
{
expression.AttachCompiler(new ComparisonExpressionCompiler(binaryExpression, context));
}
else
{
expression.AttachCompiler(new BinaryExpressionCompiler(binaryExpression, context));
}
}
else if (expression is IdentifierExpression)
{
expression.AttachCompiler(new IdentifierExpressionCompiler((IdentifierExpression)expression, context));
}
else if (expression is LiteralExpression)
{
expression.AttachCompiler(new LiteralExpressionCompiler((LiteralExpression)expression, context));
}
else if (expression is MethodCallExpression)
{
expression.AttachCompiler(new MethodCallExpressionCompiler((MethodCallExpression)expression, context));
}
else if (expression is NegativeExpression)
{
expression.AttachCompiler(new NegativeExpressionCompiler((NegativeExpression)expression, context));
}
else if (expression is PropertyExpression)
{
expression.AttachCompiler(new PropertyExpressionCompiler((PropertyExpression)expression, context));
}
else
{
throw new Exception("Unknown expression " + expression.GetType().Name);
}
}
public static T Compiler <T>(this SBExpression expression) where T : class, IExpressionCompiler
{
return(expressionCompilers[expression] as T);
}
public static IExpressionCompiler Compiler(this SBExpression expression)
{
return(expressionCompilers[expression]);
}
public static bool HasCompiler(this SBExpression expression)
{
return(expressionCompilers.ContainsKey(expression));
}
private static void AttachCompiler(this SBExpression expression, IExpressionCompiler compiler)
{
expressionCompilers.Add(expression, compiler);
}
public static bool IsNumericLiteral(this SBExpression expression)
{
return(expression.StartToken.TokenType == TokenType.NumericLiteral || expression.EndToken.TokenType == TokenType.NumericLiteral);
}
public static bool IsLiteral(this SBExpression expression)
{
return(expression is LiteralExpression || (expression is NegativeExpression && ((NegativeExpression)expression).Expression.IsLiteral()));
}
private EV3Variable FindVariable(SBExpression expression)
{
return(variables.Values.FirstOrDefault(v => expression.IsVariable(v)));
}