internal static Expression GetVariableExpression(int typeIndex, Oc5ModelState oc5State, ParameterExpression oc5StateParameterExpression)
{
var type = (Types)typeIndex;
switch (type)
{
case Types._boolean:
oc5State.Bools.Add(default(bool));
var boolIndex = oc5State.Bools.Count - 1;
oc5State.Mappings.Add(new PositionInOc5State {
Type = type, IndexInOc5StateList = boolIndex
});
var boolsExpression = Expression.Property(oc5StateParameterExpression, "Bools");
return(Expression.Property(boolsExpression, "Item", Expression.Constant(boolIndex)));
case Types._integer:
oc5State.Ints.Add(default(int));
var intIndex = oc5State.Ints.Count - 1;
oc5State.Mappings.Add(new PositionInOc5State {
Type = type, IndexInOc5StateList = intIndex
});
var intsExpression = Expression.Property(oc5StateParameterExpression, "Ints");
return(Expression.Property(intsExpression, "Item", Expression.Constant(intIndex)));
case Types._string:
oc5State.Strings.Add(default(string));
var stringIndex = oc5State.Strings.Count - 1;
oc5State.Mappings.Add(new PositionInOc5State {
Type = type, IndexInOc5StateList = stringIndex
});
var stringsExpression = Expression.Property(oc5StateParameterExpression, "Strings");
return(Expression.Property(stringsExpression, "Item", Expression.Constant(stringIndex)));
case Types._float:
oc5State.Floats.Add(default(float));
var floatIndex = oc5State.Floats.Count - 1;
oc5State.Mappings.Add(new PositionInOc5State {
Type = type, IndexInOc5StateList = floatIndex
});
var floatsExpression = Expression.Property(oc5StateParameterExpression, "Floats");
return(Expression.Property(floatsExpression, "Item", Expression.Constant(floatIndex)));
case Types._double:
oc5State.Doubles.Add(default(double));
var doubleIndex = oc5State.Doubles.Count - 1;
oc5State.Mappings.Add(new PositionInOc5State {
Type = type, IndexInOc5StateList = doubleIndex
});
var doublesExpression = Expression.Property(oc5StateParameterExpression, "Doubles");
return(Expression.Property(doublesExpression, "Item", Expression.Constant(doubleIndex)));
default:
throw new ArgumentException($"No predefined type with index {typeIndex}!");
}
}
public Oc5Runner(string oc5Source)
{
Oc5Source = oc5Source;
var inputStream = new AntlrInputStream(oc5Source);
var lexer = new Oc5Lexer(inputStream);
var tokenStream = new CommonTokenStream(lexer);
var parser = new Oc5Parser(tokenStream);
var ocfileContext = parser.ocfile();
var visitor = new CompileVisitor(ocfileContext);
Oc5Model = visitor.Oc5Model;
Oc5ModelState = visitor.Oc5ModelState;
}
