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digitalmars.D - Forward reference not working in nested functions

reply "H. S. Teoh" <hsteoh quickfur.ath.cx> writes:
Is this a known bug or deliberate limitation?

	void func(T)(T data) {
		void subfunc1() {
			process(data);
			if (recurse) subfunc2(); // Error: subfunc2 undefined
		}

		void subfunc2() {
			process(data);
			if (recurse) subfunc1(); // Error: subfunc1 undefined
		}

		subfunc1();
	}


T

-- 
Heads I win, tails you lose.
Dec 12 2012
next sibling parent Jacob Carlborg <doob me.com> writes:
On 2012-12-12 19:03, H. S. Teoh wrote:

 Is this a known bug or deliberate limitation?

 	void func(T)(T data) {
 		void subfunc1() {
 			process(data);
 			if (recurse) subfunc2(); // Error: subfunc2 undefined
 		}

 		void subfunc2() {
 			process(data);
 			if (recurse) subfunc1(); // Error: subfunc1 undefined
 		}

 		subfunc1();
 	}



It's basically the same thing as you need to declare variables in 
correct order in a function.

-- 
/Jacob Carlborg
Dec 12 2012
prev sibling next sibling parent reply Timon Gehr <timon.gehr gmx.ch> writes:
On 12/12/2012 07:03 PM, H. S. Teoh wrote:

 Is this a known bug or deliberate limitation?

 	void func(T)(T data) {
 		void subfunc1() {
 			process(data);
 			if (recurse) subfunc2(); // Error: subfunc2 undefined
 		}

 		void subfunc2() {
 			process(data);
 			if (recurse) subfunc1(); // Error: subfunc1 undefined
 		}

 		subfunc1();
 	}


 T



Both.
Dec 12 2012
parent Timon Gehr <timon.gehr gmx.ch> writes:
On 12/12/2012 09:03 PM, Timon Gehr wrote:

 On 12/12/2012 07:03 PM, H. S. Teoh wrote:

 Is this a known bug or deliberate limitation?

     void func(T)(T data) {
         void subfunc1() {
             process(data);
             if (recurse) subfunc2(); // Error: subfunc2 undefined
         }

         void subfunc2() {
             process(data);
             if (recurse) subfunc1(); // Error: subfunc1 undefined
         }

         subfunc1();
     }


 T



 Both.



(A silly workaround is the following, but I do not know if this has been 
documented since it has been discovered:


     void func(T)(T data) {
         void subfunc1()() {
             process(data);
             if (recurse) subfunc2(); // Ok.
         }

         void subfunc2() {
             process(data);
             if (recurse) subfunc1(); // Ok.
         }

         subfunc1();
     }
)
Dec 12 2012
prev sibling parent "bearophile" <bearophileHUGS lycos.com> writes:
Timon Gehr:


 (A silly workaround is the following, but I do not know if this 
 has been documented since it has been discovered:



The workaround I use was found by Don, is to the define an inner 
static struct with static methods.

Bye,
bearophile
Dec 12 2012