Constant Story "ReplaceRecurseTest";
Constant Headline "Not a game.^";

Release 1;

#ifdef TARGET_ZCODE;
Constant HDR_GAMERELEASE      = $02;     ! word
Constant HDR_GAMESERIAL       = $12;     ! six ASCII characters
#ifnot;
Global gg_mainwin;
Constant HDR_GLULXVERSION  $04;     ! long word
Constant ROM_GAMERELEASE   $34;     ! short word
Constant ROM_GAMESERIAL    $36;     ! six ASCII characters
#endif; ! TARGET_GLULX

Global failures;

[ Main;
    #ifdef TARGET_GLULX;
	@setiosys 2 0;
	@push 201; @push 3; @push 0; @push 0; @push 0;
	@glk $0023 5 gg_mainwin;

	@push gg_mainwin;
	@glk $002F 1 0;
    #endif; ! TARGET_GLULX

	Banner();
	new_line;
	RunTest();
];

[ Banner  ix;
    if (Story ~= 0) {
        #ifdef TARGET_ZCODE;
        #ifV5; style bold; #Endif;
        print (string) Story;
        #ifV5; style roman; #Endif;
        #ifnot; ! TARGET_GLULX;
        glk($0086, 3); ! set header style
        print (string) Story;
        glk($0086, 0); ! set normal style
        #Endif; ! TARGET_
    }
    if (Headline ~= 0) print ": ", (string) Headline;
    #ifdef TARGET_ZCODE;
    print "Release ", (HDR_GAMERELEASE-->0) & $03ff, " / Serial number ";
    for (ix=0 : ix<6 : ix++) print (char) HDR_GAMESERIAL->ix;
    #ifnot; ! TARGET_GLULX;
    print "Release ";
    @aloads ROM_GAMERELEASE 0 ix;
    print ix;
    print " / Serial number ";
    for (ix=0 : ix<6 : ix++) print (char) ROM_GAMESERIAL->ix;
    #Endif; ! TARGET_
    print " / Inform v"; inversion;
    print ", compiler options ";
    ix = false;
    #ifdef STRICT_MODE;
    print "S"; ix++;
    #Endif; ! STRICT_MODE
    #ifdef INFIX;
    print "X"; ix++;
    #ifnot;
    #ifdef DEBUG;
    print "D"; ix++;
    #Endif; ! DEBUG
    #Endif; ! INFIX
    if (~~ix) print "(none)";
    new_line;

    #ifdef TARGET_GLULX;
    @gestalt 1 0 ix;
    print "Interpreter version ", ix / $10000, ".", (ix & $FF00) / $100,
    ".", ix & $FF, " / ";
    @gestalt 0 0 ix;
    print "VM ", ix / $10000, ".", (ix & $FF00) / $100, ".", ix & $FF, " / ";
    ix = HDR_GLULXVERSION-->0;
    print "game file format ", ix / $10000, ".", (ix & $FF00) / $100, ".", ix & $FF, "^";
    #Endif; ! TARGET_GLULX
];

[ check_value val1 val2;
	print val1;
	if (val1 ~= val2) {
		failures++;
		print " (ERROR, should be ", val2, ")";
	}
];

Global testglob;

[ RunTest;
	print "Calls to replaced function:^";
	testglob = 0;
	call0();
	call1();
	call2();
	call3();
	print "  ...called "; check_value(testglob, 4); print " times.^^";

	print "Calls to recursive replaced function:^";
	testglob = 0;
	recurse(4);
	print "  ...called "; check_value(testglob, 5); print " times.^^";

	print "Calls to double-replaced function:^";
	testglob = 0;
	tricall0();
	tricall1();
	tricall2();
	tricall3();
	tricall4();
	print "  ...called "; check_value(testglob, 5); print " times.^^";

	print "Calls to never-replaced function:^";
	testglob = 0;
	unicall0();
	print "  ...called "; check_value(testglob, 1); print " times.^";
	
	new_line;
	if (failures == 0)
		print "All passed.^";
	else
		print failures, " errors!^";
];

! -----------------------------

[ call0;
	print "Call0: ";
	origfunc();
];

Replace origfunc;

[ call1;
	print "Call1: ";
	origfunc();
];

[ origfunc;
	print "Original (ERROR).^";
	failures++;  ! Should not be called.
];

[ call2;
	print "Call2: ";
	origfunc();
];

[ origfunc;
	print "Replacement.^";
	testglob++;
];

[ call3;
	print "Call3: ";
	origfunc();
];

! -----------------------------


[ tricall0;
	print "Tricall0: ";
	tripfunc();
];

Replace tripfunc;

[ tricall1;
	print "Tricall1: ";
	tripfunc();
];

[ tripfunc;
	print "Original (ERROR).^";
	failures++;  ! Should not be called.
];

[ tricall2;
	print "Tricall2: ";
	tripfunc();
];

[ tripfunc;
	print "Replacement 1 (ERROR).^";
	failures++;  ! Should not be called.
];

[ tricall3;
	print "Tricall3: ";
	tripfunc();
];

[ tripfunc;
	print "Replacement 2.^";
	testglob++;
];

[ tricall4;
	print "Tricall4: ";
	tripfunc();
];

! -----------------------------

Replace unifunc;

[ unifunc;
	print "Unreplaced original.^";
	testglob++;
];

[ unicall0;
	print "Unicall0: ";
	unifunc();
];

! -----------------------------

Replace recurse;

[ recurse val;
	print "Recurse orig (ERROR): ", val, "^";
	failures++;  ! Should not be called.
	if (val)
		recurse(val-1);
];

[ recurse val;
	print "Recurse replacement: ", val, "^";
	testglob++;
	if (val)
		recurse(val-1);
];