// 
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
// 
// loopctrl.cfa -- 
// 
// Author           : Peter A. Buhr
// Created On       : Wed Aug  8 18:32:59 2018
// Last Modified By : Peter A. Buhr
// Last Modified On : Fri Aug  2 08:42:55 2024
// Update Count     : 185
// 

#include <fstream.hfa>

void fred() {
	// Test all possible loop syntax.

	int s = 0, c = 10, i = 2;

	for ( c ) { sout | "A"; }						sout | nl;
	for ( ~= c ) { sout | "B"; }					sout | nl;
	for ( -~ c ) { sout | "C"; }					sout | nl;
	for ( -~= c ) { sout | "D"; }					sout | nl;

	for ( s ~ c ) { sout | "A"; }					sout | nl;
	for ( s ~= c ) { sout | "B"; }					sout | nl;
	for ( s -~ c ) { sout | "C"; }					sout | nl;
	for ( s -~= c ) { sout | "D"; }					sout | nl;

	for ( s ~ c ~ i ) { sout | "A"; }				sout | nl;
	for ( s ~= c ~ i ) { sout | "B"; }				sout | nl;
	for ( s -~ c ~ i ) { sout | "C"; }				sout | nl;
	for ( s -~= c ~ i ) { sout | "D"; }				sout | nl;

	for ( j; c ) { sout | j; }							sout | nl;
	for ( j; ~= c ) { sout | j; }					sout | nl;
	for ( j; -~ c ) { sout | j; }					sout | nl;
	for ( j; -~= c ) { sout | j; }					sout | nl;

	for ( j; s ~ c ) { sout | j; }					sout | nl;
	for ( j; s ~= c ) { sout | j; }					sout | nl;
	for ( j; s -~ c ) { sout | j; }					sout | nl;
	for ( j; s -~= c ) { sout | j; }				sout | nl;

	for ( j; s ~ c ~ i ) { sout | j; }				sout | nl;
	for ( j; s ~= c ~ i ) { sout | j; }				sout | nl;
	for ( j; s -~ c ~ i ) { sout | j; }				sout | nl;
	for ( j; s -~= c ~ i ) { sout | j; }			sout | nl;

	// CANNOT DIRECTLY INITIALIZE INDEX VARIABLE, ONLY SINGLE LOOP INDEX VARIABLE IN DECLARATION

	for ( j; c ) { sout | j; }						sout | nl;
	for ( int j; c ) { sout | j; }					sout | nl;
	for ( int j; ~= c ) { sout | j; }				sout | nl;
	for ( int j; -~ c ) { sout | j; }				sout | nl;
	for ( int j; -~= c ) { sout | j; }				sout | nl;

	for ( int j; s ~ c ) { sout | j; }				sout | nl;
	for ( int j; s ~= c ) { sout | j; }				sout | nl;
	for ( int j; s -~ c ) { sout | j; }				sout | nl;
	for ( int j; s -~= c ) { sout | j; }			sout | nl;

	for ( int j; s ~ c ~ i ) { sout | j; }			sout | nl;
	for ( int j; s ~= c ~ i ) { sout | j; }			sout | nl;
	for ( int j; s -~ c ~ i ) { sout | j; }			sout | nl;
	for ( int j; s -~= c ~ i ) { sout | j; }		sout | nl;

	for ( j; s ~ @ ) { if ( j == 10 ) break; sout | j; }				sout | nl;
	for ( j; @ -~ s ) { if ( j == -10 ) break; sout | j; }				sout | nl;
	for ( j; s ~ @ ~ i ) { if ( j == 10 ) break; sout | j; }			sout | nl;
	for ( j; @ -~ s ~ i ) { if ( j == -10 ) break; sout | j; }			sout | nl;
	for ( j; s ~ @ ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; }	sout | nl;

	for ( int j; s ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; }	sout | nl;
	for ( int j; @ -~ s ) { if ( j == -10 ) break; sout | j; j -= 1; }	sout | nl;
	for ( int j; s ~ @ ~ i ) { if ( j == 10 ) break; sout | j; }		sout | nl;
	for ( int j; @ -~ s ~ i ) { if ( j == -10 ) break; sout | j; }		sout | nl;
	for ( int j; s ~ @ ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; } sout | nl;

	enum(int) E { A, B, C, D };
	for ( E e; A ~= C ) { sout | e; } sout | nl;
	for ( e; A ~= D ) { sout | e; } sout | nl;
	for ( e; A -~= D ~ 2 ) { sout | e; } sout | nl;
	for ( e; E ) { sout | e; } sout | nl;
	for ( e; -~= E ) { sout | e; } sout | nl;
}

struct S { int i, j; };
void ?{}( S & s ) { s.[i, j] = 0; }
void ?{}( S & s, int i ) { s.[i, j] = [i, 0]; }
void ?{}( S & s, int i, int j ) { s.[i, j] = [i, j]; }
void ?{}( S & s, zero_t ) { s.[i, j] = 0; }
void ?{}( S & s, one_t ) { s.[i, j] = 1; }
int ?<?( S s1, S s2 ) { return s1.i < s2.i || s1.j < s2.j; }
int ?<=?( S s1, S s2 ) { return s1.i <= s2.i || s1.j <= s2.j; }
int ?>?( S s1, S s2 ) { return s1.i > s2.i || s1.j > s2.j; }
int ?>=?( S s1, S s2 ) { return s1.i >= s2.i || s1.j >= s2.j; }
S ?+=?( S & s1, S s2 ) { s1.i += s2.i; s1.j += s2.j; return s1; }
S ?+=?( S & s, one_t ) { s.i += 1; s.j += 1; return s; }
S ?-=?( S & s1, S s2 ) { s1.i -= s2.i; s1.j -= s2.j; return s1; }
S ?-=?( S & s, one_t ) { s.i -= 1; s.j -= 1; return s; }
ofstream & ?|?( ofstream & os, S s ) { return os | '(' | s.i | s.j | ')'; }
void & ?|?( ofstream & os, S s ) { (ofstream &)(os | s); ends( os ); }

int main() {
	// Test some loop options.

	sout | nlOff;										// turn off auto newline
	while () { sout | "empty"; break; }					sout | nl;
	do { sout | "empty"; break; } while ();				sout | nl;
	for () { sout | "empty"; break; }					sout | nl | nl;

	for ( 0 ) { sout | "A"; }							sout | "zero" | nl;
	for ( 1 ) { sout | "A"; }							sout | nl;
	for ( 10 ) { sout | "A"; }							sout | nl;
	for ( ~= 10 ) { sout | "A"; }						sout | nl;
	for ( 1 ~= 10 ~ 2 ) { sout | "B"; }					sout | nl;
	for ( 1 -~= 10 ~ 2 ) { sout | "C"; }				sout | nl;
	for ( 0.5 ~ 5.5 ) { sout | "D"; }					sout | nl;
	for ( 0.5 -~ 5.5 ) { sout | "E"; }					sout | nl | nl;

	for ( i; 10 ) { sout | i; }							sout | nl;
	for ( i; ~= 10 ) { sout | i; }						sout | nl;
	for ( i; 1 ~= 10 ~ 2 ) { sout | i; }				sout | nl;
	for ( i; 1 -~= 10 ~ 2 ) { sout | i; }				sout | nl;
	for ( i; 0.5 ~ 5.5 ) { sout | i; }					sout | nl;
	for ( i; 0.5 -~ 5.5 ) { sout | i; }					sout | nl;
	for ( ui; 2u ~= 10u ~ 2u ) { sout | ui; }			sout | nl;
	for ( ui; 2u -~= 10u ~ 2u ) { sout | ui; }			sout | nl | nl;

	// @ means do nothing
	for ( i; 1 ~ @ ) {
	  if ( i > 10 ) break;
		sout | i;
	}													sout | nl;
	for ( i; @ -~ 10 ) {
	  if ( i < 0 ) break;
		sout | i;
	}													sout | nl;
	for ( i; 2 ~ @ ~ 2 ) {
	  if ( i > 10 ) break;
		sout | i;
	}													sout | nl;
	for ( i; 2.1 ~ @ ~ @ ) {
	  if ( i > 10.5 ) break;
		sout | i;
		i += 1.7;
	}													sout | nl;
	for ( i; @ -~ 10 ~ 2 ) {
	  if ( i < 0 ) break;
		sout | i;
	}													sout | nl;
	for ( i; 12.1 ~ @ ~ @ ) {
	  if ( i < 2.5 ) break;
		sout | i;
		i -= 1.7;
	}													sout | nl | nl;
	
	enum { N = 10 };
	for ( N ) { sout | "N"; }							sout | nl;
	for ( i; N ) { sout | i; }							sout | nl;
	for ( i; ~= N ) { sout | i; }						sout | nl;
	for ( i; -~= N ) { sout | i; }						sout | nl | nl;

	const int start = 3, comp = 10, inc = 2;
	for ( i; start ~ comp ~ inc + 1 ) { sout | i; }		sout | nl | nl;

	for ( i; 10 : j; -5 ~ @ ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; @ -~ -5 ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; -5 ~ @ ~ 2 ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; @ -~ -5 ~ 2 ) { sout | i | j; } sout | nl | nl;

	for ( j; -5 ~ @ : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; @ -~ -5 : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; -5 ~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; @ -~ -5 ~ 2 : i; 10 ) { sout | i | j; } sout | nl | nl;

	for ( j; @ -~ -5 ~ 2 : i; 10 : k; 1.5 ~ @ ) { sout | i | j | k; } sout | nl;
	for ( j; @ -~ -5 ~ 2 : k; 1.5 ~ @ : i; 10 ) { sout | i | j | k; } sout | nl;
	for ( k; 1.5 ~ @ : j; @ -~ -5 ~ 2 : i; 10 ) { sout | i | j | k; } sout | nl;

	for ( S s = (S){0}; s < (S){10,10}; s += (S){1} ) { sout | s; } sout | nl; // 0 does not work
	for ( s; (S){10,10} ) { sout | s; } sout | nl;
	sout | nl;
	for ( s; (S){0} ~ (S){10,10} ) { sout | s; }		 sout | nl;
	for ( s; (S){0} ~ (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
	for ( s; (S){0} ~= (S){10,10} ) { sout | s; }		 sout | nl;
	for ( s; (S){0} ~= (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
	sout | nl;
	for ( s; (S){0} -~  (S){10,10} ) { sout | s; }		 sout | nl;
	for ( s; (S){0} -~  (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
	for ( s; (S){0} -~= (S){10,10} ) { sout | s; }		 sout | nl;
	for ( s; (S){0} -~= (S){10,10} ~ (S){1} ) { sout | s; } sout | nl | nl;

	int i = 10;
	double d = 10.;
	char c = 'e';
	S s = { 7 };

	for ( anon; 3 ~ i ) sout | anon;					sout | nl;
	for ( anon; 3 ~ i ) sout | anon;					sout | nl;
	for ( anon; 3 -~ i ) sout | anon;					sout | nl;
	for ( anon; 3.5 ~ d ) sout | anon;					sout | nl;
	for ( anon; 'a' ~= c ) sout | anon;					sout | nl;
	for ( anon; 'a' -~= c ) sout | anon;				sout | nl;
	for ( anon; (S){0} ~ s ) sout | anon;				sout | nl; // 0 does not work
	for ( anon; (S){1} ~ s ) sout | anon;				sout | nl; // 1 does not work
	for ( anon; (S){3} ~ s ) sout | anon;				sout | nl;
	for ( anon; (S){3} -~ s ) sout | anon;				sout | nl | nl;

	fred();
}

// Local Variables: //
// tab-width: 4 //
// compile-command: "cfa loopctrl.cfa" //
// End: //