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#include "lie.h"
#define local static
#define STACK_LEN 100
typedef void (*switch_func_tp)(entry);
typedef struct
{ int runtime, verbose, bigints, gc, prompt, monitor, lex, degree, height,
lprint, lmargin; } state_tp;
typedef struct
{ atp a; switch_func_tp fnc_on, fnc_off; int* state;} mode_tp;
state_tp state=
{OFFCODE, OFFCODE, ONCODE,ONCODE,ONCODE,OFFCODE,PLUS,OFFCODE,OFFCODE,ONCODE,OFFCODE};
cmpfn_tp cmpfn;
local struct { int pt; state_tp s[STACK_LEN];} mstack; /* state stack */
local struct { int pt; object defaultgrp[STACK_LEN];} gstack;
local void prompt_on(entry unused) { prompt = true; }
local void prompt_off(entry unused) { prompt = false; }
local void lprint_on(entry unused) { lprint = true; }
local void lprint_off(entry unused) { lprint = false; }
local void gc_set_on(entry unused) { gc_set = true; }
local void gc_set_off(entry unused) { gc_set = false; }
local void lmargin_on(entry argument) { lmargin = argument; }
local void lmargin_off(entry unused) { lmargin = LMARGIN; }
local void monitor_on(entry unused)
{ if (!am_monitor)
if ((monfile = fopen(monfil,"a"))==NULL)
error("Cannot open %s.\n",monfil);
else am_monitor=true;
}
local void monitor_off(entry unused)
{ if (am_monitor)
{ fprintf(monfile,"\n"); /* make sure last line has ended */
fclose(monfile); monfile = NULL;
am_monitor=false;
}
}
local void runtime_on(entry unused)
{ if (!runtime) registrate_cpu(), runtime=true; }
local void runtime_off(entry unused)
{ if (runtime) print_runtime(), runtime = false; }
local void verbose_on(entry unused) { verbose=true; }
local void verbose_off(entry unused) { verbose = false; }
local void unsort(object x)
{ if (type_of(x)==MATRIX || type_of(x)==POLY) clrsorted(x); }
void unmark_sorted(void)
{ for_all_objects(unsort); }
local void cmpfn_deg_on(entry argument)
{ cmpfn = argument==MINUS ? deg_decr : (argument=PLUS,deg_incr) ;
state.degree=argument; state.lex=OFFCODE; state.height=OFFCODE;
unmark_sorted();
}
local void cmpfn_lex_on(entry argument)
{ cmpfn = argument==MINUS ? lex_decr : (argument=PLUS,lex_incr) ;
state.degree=OFFCODE; state.lex=argument; state.height=OFFCODE;
unmark_sorted();
}
local void cmpfn_height_on(entry argument)
{ cmpfn = argument==MINUS ? height_decr : (argument=PLUS,height_incr) ;
state.degree=OFFCODE; state.lex=OFFCODE; state.height=argument;
unmark_sorted();
}
local void rechain_symbols(symbrec s[],int n)
{ int i;
for (i=n-1;i>=0;i-=s[i].formal)
{ s[i].next = symbol_tab[s[i].a.name];
symbol_tab[s[i].a.name]=&s[i];
}
}
local void rebuild_symbol_tab(void)
{ static boolean first = true;
if (!first) clear_symbol_tab(); else first = false;
rechain_symbols((symblst)static3,nstatic3);
rechain_symbols((symblst)static4,nstatic4);
rechain_symbols((symblst)static5,nstatic5);
rechain_symbols((symblst)static2,nstatic2);
rechain_symbols((symblst)static1,nstatic1);
if (bigint_set) rechain_symbols((symblst)static7,nstatic7);
else rechain_symbols((symblst)static6,nstatic6);
}
local void bigint_set_on(entry unused)
{ static boolean start = true;
if (!bigint_set || start)
{ bigint_set = true;
rebuild_symbol_tab();
start = false;
}
}
local void bigint_set_off(entry unused)
{ if (bigint_set)
{ bigint_set = false;
rebuild_symbol_tab();
}
}
local mode_tp mode[] =
{
{{"runtime"},runtime_on, runtime_off, &state.runtime},
{{"verbose"},verbose_on, verbose_off, &state.verbose},
{{"bigints"},bigint_set_on, bigint_set_off, &state.bigints},
{{"gc"}, gc_set_on, gc_set_off, &state.gc},
{{"prompt"},prompt_on,prompt_off, &state.prompt},
{{"monitor"},monitor_on,monitor_off, &state.monitor},
{{"lex"},cmpfn_lex_on, (switch_func_tp) NULL, &state.lex},
{{"degree"},cmpfn_deg_on, (switch_func_tp) NULL, &state.degree},
{{"height"},cmpfn_height_on, (switch_func_tp) NULL, &state.height},
{{"lprint"},lprint_on,lprint_off, &state.lprint},
{{"lmargin"},lmargin_on,lmargin_off, &state.lmargin}
};
boolean set_on(entry val, strtype name)
{ int i = 0; size_t n = sizeof(mode)/sizeof(mode[0]);
for (i=0; i<n; ++i) if (mode[i].a.name == name) break;
if (i==n) return true; /* not found */
*mode[i].state = val;
if (mode[i].fnc_on!=NULL) mode[i].fnc_on(val);
else error("Cannot switch %s on.\n",name_tab[name]);
return false;
}
boolean set_off(entry val, strtype name)
{ int i = 0; size_t n = sizeof(mode)/sizeof(mode[0]);
for (i=0; i<n; ++i) if (mode[i].a.name == name) break;
if (i==n) return true; /* not found */
*mode[i].state = val;
if (mode[i].fnc_off!=NULL) mode[i].fnc_off(val);
else error("Cannot switch %s off.\n",name_tab[name]);
return false;
}
void init_state(void)
{ int i; size_t n = sizeof(mode)/sizeof(mode[0]);
for (i=0; i<n; ++i)
{ mode[i].a.name = match(mode[i].a.init_string,false);
if (*mode[i].state==OFFCODE)
{ if (mode[i].fnc_off!=NULL) mode[i].fnc_off(OFFCODE); }
else { if (mode[i].fnc_on!=NULL) mode[i].fnc_on(*mode[i].state); }
}
mstack.pt = 0;
gstack.pt = 0;
}
void print_state(void)
{ int i; size_t n = sizeof mode/sizeof *mode;
for (i=0; i<n; ++i)
{ if (*mode[i].state == OFFCODE) Printf("off\t");
else if (*mode[i].state == ONCODE) Printf("on\t");
else if (*mode[i].state == PLUS) Printf("on\t+\t");
else if (*mode[i].state == MINUS) Printf("on\t-\t");
else Printf("on\t%d\t",*mode[i].state);
Printf("%s\n",name_tab[mode[i].a.name]);
}
}
void save_state(void)
{ if (mstack.pt >= STACK_LEN) error("Not possible to save more options.\n");
mstack.s[mstack.pt++]=state;
gstack.defaultgrp[gstack.pt++]=defaultgrp;
}
local void set_on_off(entry val,strtype name)
{ if (val == OFFCODE) set_off(val, name); else set_on(val,name); }
void restore_state(void)
{ int i; size_t n=sizeof mode/sizeof *mode;
if (mstack.pt==0) error("There are no saved options.\n");
state=mstack.s[--mstack.pt];
for (i=0; i<n; ++i) set_on_off(*mode[i].state,mode[i].a.name);
defaultgrp=gstack.defaultgrp[--gstack.pt];
}
void mark_defaultgrp_stack(void)
{ int i; for (i=0; i<gstack.pt; ++i) mark(gstack.defaultgrp[i]); }
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