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COMMENT * SIMULA specification;
OPTIONS(/E:QUICK,skip);
TEXT PROCEDURE skip(tt,c);
NAME tt; TEXT tt; CHARACTER c;
COMMENT If, starting at tt.Pos, a sequence of characters = c is found,
then tt.Pos is moved past these characters, otherwise tt.Pos is unaltered.
The function value of skip is rest(tt) (after changing tt.Pos).
;

!*;! MACRO-10 code !*;!

	TITLE	skip
	ENTRY	skip
	SUBTTL	SIMULA utility, Lars Enderin Nov 1975

;!*** Copyright 1975 by the Swedish Defence Research Institute. ***
;!*** Copying is allowed.					***

	sall
	search	simmac,simmcr,simrpa
	macinit

	;! Local definitions ;!

	tt==XWAC1
	t==tt
	c==XWAC3
	bp==X0
	lng=XIAC
	c1==t+1


skip:	PROC
	IF	;! Xtop is not XWAC1
		CAIN	XTAC,XWAC1
		GOTO	FALSE
	THEN	;! Rearrange ac's
		EXCH	XWAC1,(XTAC)
		EXCH	XWAC2,1(XTAC)
		EXCH	XWAC3,2(XTAC)
	FI
	ADDI	t,(t+1)	;! Address of text variable
	LF	X1,ZTVCP(t)	;! X1:=t.Pos-1
	LF	lng,ZTVLNG(t)	;! lng:=t.Length-X1
	SUBI	lng,(X1)
	JUMPLE	lng,L9	;! NOT t.More
	LF	,ZTVSP(t)
	ADDI	(X1)
	IDIVI	5
	ADD	(t)
	HRRZ
	ADD	bytep(X1)
	LOOP
		ILDB	c1,
		CAIE	c1,(c)
		GOTO	FALSE
	AS
		SOJG	lng,TRUE
	SA
	LF	X1,ZTVLNG(t)
	SUBI	X1,(lng)		;! X1:=t.Length-l
	SF	X1,ZTVCP(t)	;! [244]
	IF	;! Any character remains
		JUMPLE	lng,FALSE
	THEN
		L	c,t	;! Save text var address
		MOVSI	t,(x1)
		ADD	t,(c)
		MOVSI	t+1,(lng)
	ELSE	;! NOTEXT
L9():!		SETZB	t,t+1
	FI
	IF	;! Xtop is not XWAC1
		CAIN	XTAC,XWAC1
		GOTO	FALSE
	THEN
		EXCH	XWAC3,2(XTAC)
		EXCH	XWAC2,1(XTAC)
		EXCH	XWAC1,(XTAC)
	FI
	RETURN
	EPROC

bytep:	POINT	7,2,-1
	POINT	7,2,6
	POINT	7,2,13
	POINT	7,2,20
	POINT	7,2,27
	LIT
	END;