mirror of
https://github.com/dschmenk/PLASMA.git
synced 2024-06-01 19:41:36 +00:00
Refactor input handling
This commit is contained in:
Dave Schmenk
parent
ec9718de53
commit
c874426091
|
|
@ -25,7 +25,7 @@ predef _drop_(a)#0, _swap_(a,b)#2, _dup_(a)#2
|
|||
predef _add_(a,b)#1, _sub_(a,b)#1, _mul_(a,b)#1, _div_(a,b)#1
|
||||
predef _cset_(a,b)#0, _cget_(a)#1, _wset_(a,b)#0, _wget_(a)#1
|
||||
predef _cfa_(a)#1, _lfa_(a)#1
|
||||
predef _create_#0, _builds_#0, _dodoes_(words)#0, _filldoes_#0, _does_#0, _pset_(a)#0, _colon_#0, _semi_#0
|
||||
predef _create_#0, _dodoes_(words)#0, _filldoes_#0, _does_#0, _pset_(a)#0, _colon_#0, _semi_#0
|
||||
predef _var_(a)#0, _lit_#1, _tick_#1, _forget_#0
|
||||
predef _vlist_#0, _tron_#0, _troff_#0, _show_#0, _bye_#0
|
||||
// DROP
|
||||
|
|
@ -74,7 +74,7 @@ char d_forget = "FORGET"
|
|||
word = @d_allot, @_forget_, 0
|
||||
// BUILDS
|
||||
char d_builds = "<BUILDS"
|
||||
word = @d_forget, @_builds_, 0
|
||||
word = @d_forget, @_create_, 0
|
||||
// FILL DOES COMPILE TIME
|
||||
char d_filldoes = "FILLDOES"
|
||||
word = @d_builds, @_filldoes_, 0
|
||||
|
|
@ -124,7 +124,7 @@ word = @d_troff, @_vlist_, 0
|
|||
// Internal variables
|
||||
//
|
||||
word vlist=@d_vlist
|
||||
word inptr, IIP, W
|
||||
word infunc, inptr, IIP, W
|
||||
//
|
||||
// State flags
|
||||
//
|
||||
|
|
@ -134,58 +134,167 @@ const exit_flag = $80
|
|||
char state = 0
|
||||
char trace = 0
|
||||
//
|
||||
// Dictionary routines
|
||||
// Helper routines
|
||||
//
|
||||
def keyin#0
|
||||
byte i
|
||||
|
||||
repeat
|
||||
puts(" OK")
|
||||
inptr = gets('\n'|$80)
|
||||
until ^inptr
|
||||
^(inptr + ^inptr + 1) = 0 // NULL terminate
|
||||
inptr++
|
||||
end
|
||||
def filein#0
|
||||
end
|
||||
def toknext#2
|
||||
word tokptr
|
||||
byte len
|
||||
|
||||
repeat
|
||||
if !^inptr
|
||||
infunc()#0
|
||||
fin
|
||||
while ^inptr == ' '
|
||||
inptr++
|
||||
loop
|
||||
if ^inptr == '('
|
||||
repeat
|
||||
inptr++
|
||||
if !^inptr
|
||||
infunc()#0
|
||||
fin
|
||||
until ^inptr == ')'
|
||||
fin
|
||||
len = 0
|
||||
while ^(inptr + len) > ' '
|
||||
len++
|
||||
loop
|
||||
until len
|
||||
tokptr = inptr
|
||||
inptr = inptr + len
|
||||
return tokptr, len
|
||||
end
|
||||
//
|
||||
// Find match in dictionary
|
||||
//
|
||||
def find#1
|
||||
word d
|
||||
def find(matchchars, matchlen)#1
|
||||
word dentry
|
||||
byte len, i
|
||||
|
||||
inptr--
|
||||
d = vlist
|
||||
while d
|
||||
len = ^d & len_mask
|
||||
for i = 1 to len
|
||||
if ^(inptr+i) <> ^(d+i)
|
||||
break
|
||||
matchchars--
|
||||
dentry = vlist
|
||||
while dentry
|
||||
len = ^dentry & len_mask
|
||||
if len == matchlen
|
||||
for i = 1 to len
|
||||
if ^(matchchars+i) <> ^(dentry+i)
|
||||
break
|
||||
fin
|
||||
next
|
||||
if i > len
|
||||
//puts("[Found name = "); puts(dentry); puts("]\n")
|
||||
return dentry
|
||||
fin
|
||||
next
|
||||
if i > len and ^(inptr+i) <= ' '
|
||||
//puts("[Found name = "); puts(d); puts("]\n")
|
||||
inptr = inptr + i
|
||||
return d
|
||||
fin
|
||||
d = *(d + len + 1)
|
||||
dentry = *(dentry + len + 1)
|
||||
loop
|
||||
// Not found
|
||||
inptr++
|
||||
return 0
|
||||
end
|
||||
//
|
||||
// Convert input into number
|
||||
//
|
||||
def isnum#2
|
||||
def isnum(numchars, numlen)#2
|
||||
word num, sign
|
||||
byte numchar
|
||||
|
||||
sign = 1
|
||||
if ^inptr == '-'
|
||||
if ^numchars == '-'
|
||||
sign = -1
|
||||
inptr++
|
||||
numchars++
|
||||
numlen--
|
||||
if numlen == 0
|
||||
return 0, 0
|
||||
fin
|
||||
fin
|
||||
if ^inptr >= '0' and ^inptr <= '9'
|
||||
num = 0
|
||||
repeat
|
||||
num = num * 10 + ^inptr - '0'
|
||||
inptr++
|
||||
until ^inptr < '0' or ^inptr > '9'
|
||||
//if ^inptr <= ' '
|
||||
// puts("[Found number = "); puti(num); puts("]\n")
|
||||
//fin
|
||||
return num * sign, ^inptr <= ' '
|
||||
num = 0
|
||||
if ^numchars == '$'
|
||||
numchars++
|
||||
numlen--
|
||||
if numlen == 0
|
||||
return 0, 0
|
||||
fin
|
||||
while numlen
|
||||
numchar = toupper(^numchars)
|
||||
if numchar >= '0' and numchar <= '9'
|
||||
num = num * 16 + numchar - '0'
|
||||
elsif numchar >= 'A' and numchar <= 'F'
|
||||
num = num * 16 + numchar - 'A' + 10
|
||||
else
|
||||
break
|
||||
fin
|
||||
numchars++
|
||||
numlen--
|
||||
loop
|
||||
else
|
||||
while numlen
|
||||
numchar = ^numchars
|
||||
if numchar < '0' or numchar > '9'
|
||||
break
|
||||
fin
|
||||
num = num * 10 + numchar - '0'
|
||||
numchars++
|
||||
numlen--
|
||||
loop
|
||||
fin
|
||||
return 0, FALSE
|
||||
//puts("[Found number = "); puti(num); puts("]\n")
|
||||
return num * sign, numlen == 0
|
||||
end
|
||||
//
|
||||
// Execute code in CFA
|
||||
//
|
||||
def execword(dentry)#0
|
||||
char l
|
||||
|
||||
if trace
|
||||
l = ^dentry
|
||||
^dentry = l & len_mask
|
||||
puts(": "); puts(dentry); putln
|
||||
^dentry = l
|
||||
fin
|
||||
W = _cfa_(dentry)
|
||||
(*W)()#0
|
||||
end
|
||||
def execwords(wlist)#0
|
||||
word prevIP
|
||||
|
||||
prevIP = IIP
|
||||
IIP = wlist
|
||||
while *IIP
|
||||
execword(*IIP)
|
||||
IIP = IIP + 2
|
||||
loop
|
||||
IIP = prevIP
|
||||
end
|
||||
//
|
||||
// Word entry routines
|
||||
//
|
||||
def _dovar_#1
|
||||
return W + 2
|
||||
end
|
||||
def _docolon_#0
|
||||
//puts("DOCOLON:\n")
|
||||
execwords(W + 2)
|
||||
end
|
||||
def _pushPFA_#1
|
||||
return W + 2
|
||||
end
|
||||
def _dodoes_(words)#0
|
||||
//puts("DODOES:\n")
|
||||
(@_pushPFA_)()#0 // Stack hacks
|
||||
execwords(words)
|
||||
end
|
||||
//
|
||||
// Intrinsics
|
||||
|
|
@ -241,47 +350,6 @@ def _pfa_(dentry)#1
|
|||
l = ^dentry & len_mask
|
||||
return dentry + l + 5
|
||||
end
|
||||
//
|
||||
// Execute code in CFA
|
||||
//
|
||||
def execword(dentry)#0
|
||||
char l
|
||||
|
||||
if trace
|
||||
l = ^dentry
|
||||
^dentry = l & len_mask
|
||||
puts(": "); puts(dentry); putln
|
||||
^dentry = l
|
||||
fin
|
||||
W = _cfa_(dentry)
|
||||
(*W)()#0
|
||||
end
|
||||
def execwords(wlist)#0
|
||||
word prevIP
|
||||
|
||||
prevIP = IIP
|
||||
IIP = wlist
|
||||
while *IIP
|
||||
execword(*IIP)
|
||||
IIP = IIP + 2
|
||||
loop
|
||||
IIP = prevIP
|
||||
end
|
||||
def _dovar_#1
|
||||
return W + 2
|
||||
end
|
||||
def _docolon_#0
|
||||
//puts("DOCOLON:\n")
|
||||
execwords(W + 2)
|
||||
end
|
||||
def _pushPFA_#1
|
||||
return W + 2
|
||||
end
|
||||
def _dodoes_(words)#0
|
||||
//puts("DODOES:\n")
|
||||
(@_pushPFA_)()#0 // Stack hacks
|
||||
execwords(words)
|
||||
end
|
||||
def _filldoes_#0
|
||||
*(_cfa_(vlist)) = IIP + 4
|
||||
end
|
||||
|
|
@ -290,28 +358,22 @@ def _lit_#1
|
|||
return *IIP
|
||||
end
|
||||
def _create_#0
|
||||
word bldptr, plist
|
||||
word bldptr, plist, namechars, namelen
|
||||
|
||||
while ^inptr == ' '
|
||||
inptr++
|
||||
namechars, namelen = toknext
|
||||
plist = vlist
|
||||
vlist = heapmark
|
||||
^vlist = namelen
|
||||
bldptr = vlist + 1
|
||||
while namelen
|
||||
^bldptr = ^namechars
|
||||
bldptr++
|
||||
namechars++
|
||||
namelen--
|
||||
loop
|
||||
if ^inptr > ' '
|
||||
plist = vlist
|
||||
vlist = heapmark
|
||||
^vlist = 0
|
||||
bldptr = vlist + 1
|
||||
while ^inptr > ' '
|
||||
^bldptr = ^inptr
|
||||
bldptr++
|
||||
inptr++
|
||||
^vlist++
|
||||
loop
|
||||
*bldptr = plist; bldptr = bldptr + 2
|
||||
heapalloc(bldptr - vlist + 2)
|
||||
fin
|
||||
end
|
||||
def _builds_#0
|
||||
_create_
|
||||
*bldptr = plist;
|
||||
bldptr = bldptr + 2
|
||||
heapalloc(bldptr - vlist + 2)
|
||||
end
|
||||
def _does_#0
|
||||
*(heapalloc(2)) = @d_filldoes
|
||||
|
|
@ -348,15 +410,12 @@ def _immediate_#0
|
|||
^vlist = ^vlist | imm_flag
|
||||
end
|
||||
def _tick_#1
|
||||
while ^inptr == ' '
|
||||
inptr++
|
||||
loop
|
||||
return find
|
||||
return find(toknext)
|
||||
end
|
||||
def _forget_#0
|
||||
word dentry
|
||||
|
||||
dentry = find
|
||||
dentry = find(toknext)
|
||||
if dentry
|
||||
heaprelease(dentry)
|
||||
fin
|
||||
|
|
@ -368,28 +427,23 @@ def _show_#0
|
|||
word dentry, pfa, w
|
||||
char l, f
|
||||
|
||||
while ^inptr == ' '
|
||||
inptr++
|
||||
loop
|
||||
if ^inptr > ' '
|
||||
dentry = find
|
||||
if dentry
|
||||
if *_cfa_(dentry) == @_docolon_
|
||||
pfa = _pfa_(dentry)
|
||||
else
|
||||
pfa = *_cfa_(dentry) + 10
|
||||
fin
|
||||
w = *pfa
|
||||
while w
|
||||
f = ^w
|
||||
l = f & len_mask
|
||||
^w = l
|
||||
puts(" "); puts(w); putln
|
||||
^w = f
|
||||
pfa = pfa + 2
|
||||
w = *pfa
|
||||
loop
|
||||
dentry = find(toknext)
|
||||
if dentry
|
||||
if *_cfa_(dentry) == @_docolon_
|
||||
pfa = _pfa_(dentry)
|
||||
else
|
||||
pfa = *_cfa_(dentry) + 10
|
||||
fin
|
||||
w = *pfa
|
||||
while w
|
||||
f = ^w
|
||||
l = f & len_mask
|
||||
^w = l
|
||||
puts(" "); puts(w); putln
|
||||
^w = f
|
||||
pfa = pfa + 2
|
||||
w = *pfa
|
||||
loop
|
||||
fin
|
||||
end
|
||||
def _tron_#0
|
||||
|
|
@ -417,6 +471,8 @@ end
|
|||
//
|
||||
def _quit_#0
|
||||
word dentry, __drop, __isnum, __pset
|
||||
word inchars
|
||||
byte inlen, i
|
||||
|
||||
__drop = @_drop_
|
||||
__isnum = @isnum
|
||||
|
|
@ -427,47 +483,30 @@ def _quit_#0
|
|||
d_semi = d_semi | imm_flag
|
||||
d_does = d_does | imm_flag
|
||||
repeat
|
||||
puts(" OK")
|
||||
inptr = gets('\n'|$80)
|
||||
if ^inptr
|
||||
^(inptr + ^inptr + 1) = 0
|
||||
//
|
||||
// Clear high bit of input buffer
|
||||
//
|
||||
for dentry = 1 to ^inptr
|
||||
^(inptr + dentry) = ^(inptr + dentry) & $7F
|
||||
next
|
||||
inptr++
|
||||
repeat
|
||||
while ^inptr == ' '
|
||||
inptr++
|
||||
loop
|
||||
if ^inptr > ' '
|
||||
dentry = find
|
||||
if dentry
|
||||
if (not state & comp_flag) or (^dentry & imm_flag)
|
||||
execword(dentry)
|
||||
else
|
||||
//puts("Compile "); puts(dentry); putln
|
||||
_pset_(dentry)
|
||||
fin
|
||||
elsif not __isnum()#1
|
||||
__drop()#0
|
||||
puts("? No match\n")
|
||||
^inptr = 0
|
||||
if state // Undo compilation state
|
||||
heaprelease(vlist)
|
||||
vlist = *_lfa_(vlist)
|
||||
state = 0
|
||||
fin
|
||||
elsif state & comp_flag
|
||||
_pset_(@d_lit)
|
||||
__pset()#0 // Poke literal value into PFA
|
||||
fin
|
||||
fin
|
||||
until ^inptr < ' '
|
||||
inchars, inlen = toknext
|
||||
dentry = find(inchars, inlen)
|
||||
if dentry
|
||||
if (not state & comp_flag) or (^dentry & imm_flag)
|
||||
execword(dentry)
|
||||
else
|
||||
_pset_(dentry)
|
||||
fin
|
||||
elsif not __isnum(inchars, inlen)#1
|
||||
__drop()#0
|
||||
puts("? No match\n")
|
||||
^inptr = 0
|
||||
if state // Undo compilation state
|
||||
heaprelease(vlist)
|
||||
vlist = *_lfa_(vlist)
|
||||
state = 0
|
||||
fin
|
||||
elsif state & comp_flag
|
||||
_pset_(@d_lit)
|
||||
__pset()#0 // Poke literal value into PFA
|
||||
fin
|
||||
until state & exit_flag
|
||||
end
|
||||
|
||||
infunc = @keyin
|
||||
_quit_
|
||||
done
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user