public object Visit_FunctionCallExpression(FunctionCallExpression func)
{
string name = func.Callee;
List <object> arguments = new List <object>();
foreach (IExpression argument in func.Arguments)
{
object value = argument.Accept(this);
arguments.Add(value);
}
FunctionValue funcValue = (FunctionValue)Current[name];
return(funcValue.GetValue(arguments));
}
private FunctionCallExpression Consume_FunctionCall()
{
Token token = currentToken;
FunctionCallExpression call = new FunctionCallExpression(token.Value.ToString());
Consume(TokenType.CALL);
Consume(TokenType.L_PAREN);
while (currentToken.Type != TokenType.R_PAREN)
{
call.AddArgument(Consume_Term());
if (currentToken.Type == TokenType.COMMA)
{
Consume(TokenType.COMMA);
}
}
Consume(TokenType.R_PAREN);
return(call);
}
private IExpression Consume_Statement()
{
Token token = currentToken;
switch (token.Type)
{
case TokenType.ID:
IExpression stmt = Consume_ID();
Consume(TokenType.SEMI);
return(stmt);
case TokenType.CALL:
FunctionCallExpression call = Consume_FunctionCall();
Consume(TokenType.SEMI);
return(call);
case TokenType.CONDITION:
return(Consume_ConditionalExpression());
case TokenType.MEMBERDELIMITER_LEFT:
return(Consume_DialogueExpression());
}
throw RaiseError(ScriptErrorCode.UNEXPECTED_TOKEN, token);
}
public object Visit_FunctionCallExpression(FunctionCallExpression func)
{
//Functions are added from outside of the environment
//Whether or not they are already declared depends on the C# Script
return(0);
}