Hi, i need help to find strange error in my project

https://github.com/zaher/d-sard

if you have time to compile it and test.

src/sard/classes.d

class SardObjects(T: SardObject): SardObject
 ....
    void afterAdd(T object){
      debug{
        //writeln(this.classinfo.name ~ ".add:" ~ object.classinfo.name);
        writeln("This is not compiled line");
      }
    }

I added "writeln" to the function afterAdd in base class/template the compiler stop compiler

it work if i commented all adding objects in function created in class SrdEnvironment line about 1515
but there is object used the same add function in scanner.d/class SrdLexical: SardLexical line 817, it is work there, if i moved controls and operators from Envirement to Lexical it compiled, only in Envirement not work.

I can't recognize the error there, why compiler need to interpret it in compiler time?

-----
Error: fprintf cannot be interpreted at compile time, because it has no available source code	C:\D\dmd2\src\phobos\std\stdio.d	2537	
called from here: enforce(fprintf((*stdout._p).handle, "%.*s\x0a", cast(int)_param_0.length, cast(immutable(char)*)_param_0) >= 0, delegate const(char)[]() => null, "C:\\D\\dmd2\\windows\\bin\\..\\..\\src\\phobos\\std\\stdio.d", 2537u)	C:\D\dmd2\src\phobos\std\stdio.d	2537	
called from here: writeln("This is not compiled line")	W:\home\d\lib\sard\src\sard\classes.d	94	
called from here: this.afterAdd(object)	W:\home\d\lib\sard\src\sard\classes.d	100	
called from here: super.add(c)	W:\home\d\lib\sard\src\sard\objects.d	1109	
called from here: __withSym.add("(", cast(SardControl)9)	W:\home\d\lib\sard\src\sard\objects.d	1515	
called from here: this.created()	W:\home\d\lib\sard\src\sard\classes.d	68	
called from here: super.this()	W:\home\d\lib\sard\src\sard\objects.d	1550	
----

---
class C
{
     int a = foo(); // foo is called at compile time
}
---

Reduced test case:

---
class S
{
    int a = compileTime(1);
    int b = compileTime(2);
}

int compileTime(int i) { import std.stdio; writeln("ct"); return
i; }
---

This works as expected. To initialize your fields at runtime
(using a constructor) will solve your problem.

Thank you.

I understand it as functiosn, but not classes, i fixed it by moving creating "env" from declaration of the "SardRun" class into a function.

https://github.com/zaher/d-sard/commit/9fbf3df40373d89152b00c02d9de352d64c12077#diff-8b265cbc4eda6c1f724e9f726b0da853

I feel i will fail in the same error in the future, i want to understand it


On Friday, 26 December 2014 at 08:55:36 UTC, Tobias Pankrath wrote:
> ---
> class C
> {
>      int a = foo(); // foo is called at compile time
> }
> ---
>
> Reduced test case:
>
> ---
> class S
> {
>     int a = compileTime(1);
>     int b = compileTime(2);
> }
>
> int compileTime(int i) { import std.stdio; writeln("ct"); return
> i; }
> ---
>
> This works as expected. To initialize your fields at runtime
> (using a constructor) will solve your problem.