public void Visit(FunctionInvocationNode functionInvocationNode)
{
functionInvocationNode.Function.CurrentSymbolTable = CurrentScope;
FunctionSymbolTableEntry entry = new FunctionSymbolTableEntry(functionInvocationNode.ReturnType, functionInvocationNode.Parameters);
CurrentScope.AddOrUpdateSymbol(functionInvocationNode.Identifier, entry);
}
public void Visit(AssignmentNode assignmentNode)
{
SymbolType expressionType = new ExpressionTypeChecker(CurrentScope).GetType(assignmentNode.Expression);
ValueNode expressionValue;
switch (expressionType)
{
case SymbolType.Null:
expressionValue = null;
break;
case SymbolType.Float:
var floatEval = new ExpressionEvaluator <float>(new FloatCalculator(assignmentNode.Token));
assignmentNode.Expression.Accept(floatEval);
expressionValue = new FloatValueNode()
{
Value = floatEval.Result
};
break;
case SymbolType.String:
var stringEval = new ExpressionEvaluator <string>(new StringOperations(assignmentNode.Token));
assignmentNode.Expression.Accept(stringEval);
expressionValue = new StringNode()
{
Value = stringEval.Result
};
break;
case SymbolType.Integer:
var intEval = new ExpressionEvaluator <int>(new IntCalculator(assignmentNode.Token));
assignmentNode.Expression.Accept(intEval);
expressionValue = new FloatValueNode()
{
Value = intEval.Result
};
break;
case SymbolType.Array:
var arrayEval = new ExpressionEvaluator <ArrayNode>(new ArrayCalculator(assignmentNode.Token));
assignmentNode.Expression.Accept(arrayEval);
expressionValue = arrayEval.Result;
break;
case SymbolType.Exit:
var exitEval = new ExpressionEvaluator <ExitValueNode>(new ExitValueCalculator(assignmentNode.Token));
assignmentNode.Expression.Accept(exitEval);
expressionValue = exitEval.Result;
break;
case SymbolType.Identifier:
var idEval = new ExpressionEvaluator <ValueNode>(new NoOpCalculator <ValueNode>(assignmentNode.Token));
assignmentNode.Expression.Accept(idEval);
expressionValue = idEval.Result;
break;
case SymbolType.MemberAccess:
expressionValue = (ValueNode)assignmentNode.Expression;
break;
default:
throw new ArgumentOutOfRangeException();
}
assignmentNode.Expression = expressionValue;
VariableSymbolTableEntry entry = new VariableSymbolTableEntry(expressionValue, expressionType);
CurrentScope.AddOrUpdateSymbol(assignmentNode.Identifier, entry);
}