I was writing a little helper function toString(TypeSymbol t, M3 m) when I encountered a weird parser error.
The function has a lot of statements like:
...
}else if(object() := t){
return "object";
}else if(float() := t){
return "float";
}else if(double() := t){
return "double";
...
These work fine.
However, when I try this same pattern for int() or void(), the compiler gives an error, specifically on the = sign.
if(int() := t){}
^ Parse error here
As it often happens, I found the answer to this question while I was typing it up. However, I think it'll be valuable for others so I will post it nonetheless.
I got the syntax for pattern matching in this answer: https://stackoverflow.com/a/21929342/451847
It seems that the 'proper' way of pattern matching is to prefix the type you want to test for with a \.
So, the code above becomes:
...
}else if(\object() := t){
return "object";
}else if(\float() := t){
return "float";
}else if(\double() := t){
return "double";
...
The non-\ syntax works for most of the cases but I think int() and void() have a different definition.
