private static List <IExpression> ParseExpressionSequence(
string[] expressionsString, ParserContext context,
out SymbolType returnType, out SymbolType returnArrayType)
{
returnType = SymbolType.Invalid;
returnArrayType = SymbolType.Invalid;
List <IExpression> expressions = new List <IExpression>();
if (expressionsString.Length == 0)
{
returnType = SymbolType.Void;
expressions.Add(new SymbolExpression <Void>(new VoidSymbol()));
Debug.LogWarning("Executable.ParseExpressionSequence(...) : empty sequence.");
return(expressions);
}
for (int i = 0; i < expressionsString.Length; i++)
{
string expressionString = expressionsString[i];
if (expressionString == "")
{
continue;
}
IExpression expression = Parser.ParseExpression(expressionString, context);
if (expression == null)
{
Debug.LogError("Executable.ParseExpressionSequence(...) : parsing error at " +
$"line {i+1} \"{expressionString}\".");
return(null);
}
if (i == expressionsString.Length - 1)
{
// last expression determines return Type
returnArrayType = expression.ArrayType();
returnType = expressionString.EndsWith(";") ?
SymbolType.Void : expression.Type();
}
expressions.Add(expression);
}
return(expressions);
}