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Imported asir2000 as OpenXM_contrib2/asir2000.

/* $OpenXM: OpenXM_contrib2/asir2000/parse/asir_sm.c,v 1.1.1.1 1999/12/03 07:39:11 noro Exp $ */
#include "ca.h"
#include "parse.h"
#if defined(THINK_C)
#include <console.h>
#endif

#if PARI
#include "genpari.h"

extern jmp_buf environnement;
#endif

extern jmp_buf env;
extern int *StackBottom;
extern int ox_do_copy, ox_do_count, ox_count_length;
extern char *ox_copy_bptr;

Obj Asir_OperandStack[BUFSIZ];
char *Asir_DebugStack[BUFSIZ];
int Asir_OperandStackPtr;
int Asir_DebugStackPtr;

Asir_Start()
{
	int tmp;
	FILE *ifp;
	char ifname[BUFSIZ];
	extern int GC_dont_gc;
	extern int read_exec_file;
	extern int do_asirrc;
	char *getenv();
	static ox_asir_initialized = 0;

	asir_save_handler();
	if ( ox_asir_initialized )
		return;
	ox_asir_initialized = 1;
	ox_do_copy = 1;
#if defined(THINK_C)
	param_init();
#endif
	StackBottom = &tmp + 1; /* XXX */
	rtime_init();
	env_init();
	endian_init();
#if !defined(TOWNS) && !defined(THINK_C)
/*	check_key(); */
#endif
#if defined(TOWNS) && !defined(GO32) && !defined(__WIN32__)
	disable_ctrl_c();
#endif
	GC_init();
/*	process_args(argc,argv); */
#if 0
	copyright();
#endif
	output_init();
	arf_init();
	nglob_init();
	glob_init();
	sig_init();
	tty_init();
	debug_init();
	pf_init();
	sysf_init();
	parif_init();
#if defined(UINIT)
	reg_sysf();
#endif
#if defined(THINK_C) || defined(TOWNS)
	sprintf(ifname,"asirrc");
#else
	sprintf(ifname,"%s/.asirrc",getenv("HOME"));
#endif
	asir_set_handler();
	if ( do_asirrc && (ifp = fopen(ifname,"r")) ) {
		input_init(ifp,ifname);
		if ( !setjmp(env) ) {
			read_exec_file = 1;
			read_eval_loop();
		}
		fclose(ifp);
	}
	asir_reset_handler();
	input_init(0,"string");
	Asir_OperandStackPtr = Asir_DebugStackPtr = -1;
}

char *Asir_PopBinary();
char *Asir_PopString();
Obj asir_pop_obj();

extern char *parse_strp;
extern int ox_do_copy;

int Asir_ExecuteString(s)
char *s;
{
	SNODE snode;
	pointer val;
#if PARI
	static long tloc,listloc;
	extern long avloc;

	Asir_Start();
	asir_set_handler();
	avloc = avma; tloc = tglobal; listloc = marklist();
	if ( setjmp(environnement) ) {
		avma = avloc; tglobal = tloc; recover(listloc);
		resetenv("");
	}
#endif
	if ( setjmp(env) ) {
		asir_reset_handler();
		return -1;
	}
	parse_strp = s;
	if ( mainparse(&snode) ) {
		asir_reset_handler();
		return -1;
	}
	val = evalstat(snode);
	if ( NEXT(asir_infile) ) {
		while ( NEXT(asir_infile) ) {
			if ( mainparse(&snode) ) {
				asir_push_obj(val);
				asir_reset_handler();
				return -1;
			}
			nextbp = 0;
			val = evalstat(snode);
		}
	}
	asir_push_obj(val);
	asir_reset_handler();
	return 0;
}

char *Asir_PopString()
{
	Obj val;
	char *buf,*obuf;
	int l;

	Asir_Start();
	val = asir_pop_obj();
	if ( !val )
		return 0;
	else {
		l = estimate_length(CO,val);
		buf = (char *)ALLOCA(l+1);
		soutput_init(buf);
		sprintexpr(CO,val);
		l = strlen(buf);
		obuf = (char *)GC_malloc(l+1);
		strcpy(obuf,buf);
		return obuf;
	}
}

int Asir_Set(name)
char *name;
{
	int l,n;
	char *dummy = "=0;";
	SNODE snode;

	Asir_Start();
	l = strlen(name);
	n = l+strlen(dummy)+1;
	parse_strp = (char *)ALLOCA(n);
	sprintf(parse_strp,"%s%s",name,dummy);
	if ( mainparse(&snode) )
		return -1;
	FA1((FNODE)FA0(snode)) = (pointer)mkfnode(1,I_FORMULA,asir_pop_obj());
	evalstat(snode);	
	return 0;
}

int Asir_PushBinary(size,data)
int size;
char *data;
{
	Obj val;

	Asir_Start();
	ox_copy_bptr = data;
	loadvl(0);
	loadobj(0,&val);
	asir_push_obj(val);
	ox_copy_bptr = 0;
}

char *Asir_PopBinary(size)
int *size;
{
	Obj val;
	char *buf;
	VL vl,t;

	Asir_Start();
	val = asir_pop_obj();
	get_vars(val,&vl);
	for ( t = vl; t; t = NEXT(t) )
		if ( t->v->attr == (pointer)V_UC || t->v->attr == (pointer)V_PF )
			error("bsave : not implemented");
	ox_count_length = 0; ox_do_count = 1;
	savevl(0,vl);
	saveobj(0,val);
	*size = ox_count_length;
	ox_count_length = 0; ox_do_count = 0;
	ox_copy_bptr = buf = (char *)GC_malloc(*size);
	savevl(0,vl);
	saveobj(0,val);
	ox_copy_bptr = 0;
	return buf;
}

asir_push_obj(obj)
Obj obj;
{
	Asir_OperandStack[++Asir_OperandStackPtr] = obj;
}

Obj asir_pop_obj() {
	if ( Asir_OperandStackPtr < 0 )
		return 0;
	else
		return Asir_OperandStack[Asir_OperandStackPtr--];
}