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repl.sh
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#!/bin/sh
set -e -u -f
LC_ALL=C
__ALLOC=1 # Starting heap at 1 because 0 is the null pointer.
_malloc() { # $2 = object size
: $((_$__ALLOC = $2)) # Track object size
: $(($1 = $__ALLOC + 1))
: $((__ALLOC += $2 + 1))
}
__c2i_0=48
__c2i_1=49
__c2i_2=50
__c2i_3=51
__c2i_4=52
__c2i_5=53
__c2i_6=54
__c2i_7=55
__c2i_8=56
__c2i_9=57
__c2i_a=97
__c2i_b=98
__c2i_c=99
__c2i_d=100
__c2i_e=101
__c2i_f=102
__c2i_g=103
__c2i_h=104
__c2i_i=105
__c2i_j=106
__c2i_k=107
__c2i_l=108
__c2i_m=109
__c2i_n=110
__c2i_o=111
__c2i_p=112
__c2i_q=113
__c2i_r=114
__c2i_s=115
__c2i_t=116
__c2i_u=117
__c2i_v=118
__c2i_w=119
__c2i_x=120
__c2i_y=121
__c2i_z=122
__c2i_A=65
__c2i_B=66
__c2i_C=67
__c2i_D=68
__c2i_E=69
__c2i_F=70
__c2i_G=71
__c2i_H=72
__c2i_I=73
__c2i_J=74
__c2i_K=75
__c2i_L=76
__c2i_M=77
__c2i_N=78
__c2i_O=79
__c2i_P=80
__c2i_Q=81
__c2i_R=82
__c2i_S=83
__c2i_T=84
__c2i_U=85
__c2i_V=86
__c2i_W=87
__c2i_X=88
__c2i_Y=89
__c2i_Z=90
char_to_int() {
case $1 in
[[:alnum:]]) __c=$((__c2i_$1)) ;;
' ') __c=32 ;;
'!') __c=33 ;;
'"') __c=34 ;;
'#') __c=35 ;;
'$') __c=36 ;;
'%') __c=37 ;;
'&') __c=38 ;;
"'") __c=39 ;;
'(') __c=40 ;;
')') __c=41 ;;
'*') __c=42 ;;
'+') __c=43 ;;
',') __c=44 ;;
'-') __c=45 ;;
'.') __c=46 ;;
'/') __c=47 ;;
':') __c=58 ;;
';') __c=59 ;;
'<') __c=60 ;;
'=') __c=61 ;;
'>') __c=62 ;;
'?') __c=63 ;;
'@') __c=64 ;;
'[') __c=91 ;;
'\') __c=92 ;;
']') __c=93 ;;
'^') __c=94 ;;
'_') __c=95 ;;
'`') __c=96 ;;
'{') __c=123 ;;
'|') __c=124 ;;
'}') __c=125 ;;
'~') __c=126 ;;
*)
__c=$(printf "%d" "'$1"); __c=$((__c > 0 ? __c : 256 + __c)) ;;
esac
}
next_sub_buffer() {
if [ -z "$__us_buf256" ]; then
if [ ${#__buf} -ge 256 ]; then
__temp="${__buf#????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????}"
__us_buf256="${__buf%"$__temp"}"
__buf="$__temp"
else
__us_buf256="$__buf"
__buf=
fi
fi
if [ -z "$__us_buf16" ]; then
if [ ${#__us_buf256} -ge 16 ]; then
__temp="${__us_buf256#????????????????}"
__us_buf16="${__us_buf256%"$__temp"}"
__us_buf256="$__temp"
else
__us_buf16="$__us_buf256"
__us_buf256=
fi
fi
}
unpack_escaped_string() {
__buf="$1"
# Allocates enough space for all characters, assuming that no character is escaped
_malloc __addr $((${#__buf} + 1))
__ptr=$__addr
__us_buf16=
__us_buf256=
while [ ! -z "$__buf" ] || [ ! -z "$__us_buf256" ] ; do
next_sub_buffer
while [ ! -z "$__us_buf16" ]; do
case "$__us_buf16" in
'\'*)
__us_buf16="${__us_buf16#?}" # Remove the current char from $__us_buf16
if [ -z "$__us_buf16" ]; then next_sub_buffer; fi
case "$__us_buf16" in
'0'*) __c=0 ;;
'a'*) __c=7 ;;
'b'*) __c=8 ;;
'f'*) __c=12 ;;
'n'*) __c=10 ;;
'r'*) __c=13 ;;
't'*) __c=9 ;;
'v'*) __c=11 ;;
'\'*) __c=92 ;;
'"'*) __c=34 ;;
"'"*) __c=39 ;;
'?'*) __c=63 ;;
'$'*) __c=36 ;; # Not in C, used to escape variable expansion between double quotes
*) echo "invalid escape in string: $__us_buf16"; exit 1 ;;
esac
__us_buf16="${__us_buf16#?}" # Remove the current char from $__us_buf16
;;
*)
char_to_int "${__us_buf16%"${__us_buf16#?}"}"
__us_buf16="${__us_buf16#?}" # Remove the current char from $__us_buf16
;;
esac
: $((_$__ptr = __c))
: $((__ptr += 1))
done
done
: $((_$__ptr = 0))
}
# Define a string, and return a reference to it in the varible taken as argument.
# If the variable is already defined, this function does nothing.
# Note that it's up to the caller to ensure that no 2 strings share the same variable.
defstr() { # $1 = variable name, $2 = string
set +u # Necessary to allow the variable to be empty
if [ $(($1)) -eq 0 ]; then
unpack_escaped_string "$2"
: $(($1 = __addr))
fi
set -u
}
defstr __str_0 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_input=$__str_0
: $((s = 0))
_putstr() { # s: $2
set $@ $s
s=$2
while [ $((_$s)) != 0 ]; do
printf \\$(((_$s)/64))$(((_$s)/8%8))$(((_$s)%8))
: $(((s += 1) - 1))
done
: $((__tmp = $1)) $((s = $3)) $(($1 = __tmp))
}
# rib struct member declarations
readonly __field0=0
readonly __field1=1
readonly __field2=2
readonly __sizeof__rib=3
_stack=$(((0 << 1) | 1))
_pc=$(((0 << 1) | 1))
_FALSE=$(((0 << 1) | 1))
_symbol_table=$(((0 << 1) | 1))
_max_nb_objs=100000
_rib_nb_fields=4
_space_size=$((_max_nb_objs * _rib_nb_fields))
_heap_start=0
_heap_mid=0
_heap_end=0
_alloc=0
_alloc_limit=0
_scan=0
_init_heap() {
_malloc _heap_start $((1 * (_space_size + 1)))
if [ $((_heap_start & (1 == 1))) != 0 ] ; then
: $(((_heap_start += 1) - 1))
fi
if [ $((!_heap_start)) != 0 ] ; then
exit 7
fi
_heap_mid=$((_heap_start + (_space_size >> 1)))
_heap_end=$((_heap_start + _space_size))
_alloc=$_heap_start
_alloc_limit=$_heap_mid
_stack=$(((0 << 1) | 1))
}
: $((copy = field0 = ptr = o = 0))
_copy() { # o: $2
set $@ $o $ptr $field0 $copy
o=$2
if [ $((!(o & 1))) != 0 ] ; then
ptr=$o
field0=$((_$((ptr + 0))))
if [ $field0 = 0 ] ; then
copy=$((_$((ptr + 1))))
else
copy=$_alloc
: $((_$(((ptr += 1) - 1)) = 0))
: $((_$(((_alloc += 1) - 1)) = field0))
: $((_$(((_alloc += 1) - 1)) = _$(((ptr += 1) - 1))))
: $((_$(((_alloc += 1) - 1)) = _$ptr))
: $((_$(((_alloc += 1) - 1)) = (0 << 1) | 1))
: $((_$((ptr + -1)) = copy))
fi
: $(($1 = copy))
: $((__tmp = $1)) $((o = $3)) $((ptr = $4)) $((field0 = $5)) $((copy = $6)) $(($1 = __tmp))
return
fi
: $(($1 = o))
: $((__tmp = $1)) $((o = $3)) $((ptr = $4)) $((field0 = $5)) $((copy = $6)) $(($1 = __tmp))
}
: $((to_space = 0))
_gc() {
set $@ $to_space
if [ $_alloc_limit = $_heap_mid ] ; then
to_space=$_heap_mid
_alloc_limit=$_heap_end
else
to_space=$_heap_start
_alloc_limit=$_heap_mid
fi
_alloc=$to_space
_copy _stack $_stack
_copy _pc $_pc
_copy _FALSE $_FALSE
_scan=$to_space
while [ $_scan != $_alloc ]; do
_copy _$_scan $((_$_scan))
: $(((_scan += 1) - 1))
done
: $((__tmp = $1)) $((to_space = $2)) $(($1 = __tmp))
}
: $((x = 0))
_pop() {
set $@ $x
x=$((_$((_stack + __field0))))
_stack=$((_$((_stack + __field1))))
: $(($1 = x))
: $((__tmp = $1)) $((x = $2)) $(($1 = __tmp))
}
: $((tag = car = 0))
_push2() { # car: $2, tag: $3
set $@ $car $tag
car=$2
tag=$3
: $((_$(((_alloc += 1) - 1)) = car))
: $((_$(((_alloc += 1) - 1)) = _stack))
: $((_$(((_alloc += 1) - 1)) = tag))
: $((_$(((_alloc += 1) - 1)) = (0 << 1) | 1))
_stack=$((_alloc - 4))
if [ $_alloc = $_alloc_limit ] ; then
_gc __
fi
: $((__tmp = $1)) $((car = $4)) $((tag = $5)) $(($1 = __tmp))
}
: $((allocated = old_stack = tag = cdr = car = 0))
_alloc_rib() { # car: $2, cdr: $3, tag: $4
set $@ $car $cdr $tag $old_stack $allocated
car=$2
cdr=$3
tag=$4
_push2 __ $car $cdr
old_stack=$((_$((_stack + __field1))))
allocated=$_stack
: $((_$((allocated + __field1)) = _$((allocated + __field2))))
: $((_$((allocated + __field2)) = tag))
_stack=$old_stack
: $(($1 = allocated))
: $((__tmp = $1)) $((car = $5)) $((cdr = $6)) $((tag = $7)) $((old_stack = $8)) $((allocated = $9)) $(($1 = __tmp))
}
: $((allocated = old_stack = tag = cdr = car = 0))
_alloc_rib2() { # car: $2, cdr: $3, tag: $4
set $@ $car $cdr $tag $old_stack $allocated
car=$2
cdr=$3
tag=$4
_push2 __ $car $tag
old_stack=$((_$((_stack + __field1))))
allocated=$_stack
: $((_$((allocated + __field1)) = cdr))
_stack=$old_stack
: $(($1 = allocated))
: $((__tmp = $1)) $((car = $5)) $((cdr = $6)) $((tag = $7)) $((old_stack = $8)) $((allocated = $9)) $(($1 = __tmp))
}
: $((i = lst = 0))
_list_tail() { # lst: $2, i: $3
set $@ $lst $i
lst=$2
i=$3
while [ $(((i -= 1) + 1)) != 0 ]; do
lst=$((_$((lst + __field1))))
done
: $(($1 = lst))
: $((__tmp = $1)) $((lst = $4)) $((i = $5)) $(($1 = __tmp))
}
: $((i = lst = 0))
_inst_tail() { # lst: $2, i: $3
set $@ $lst $i
lst=$2
i=$3
while [ $(((i -= 1) + 1)) != 0 ]; do
lst=$((_$((lst + __field2))))
done
: $(($1 = lst))
: $((__tmp = $1)) $((lst = $4)) $((i = $5)) $(($1 = __tmp))
}
: $((__t1 = i = lst = 0))
_list_ref() { # lst: $2, i: $3
set $@ $lst $i $__t1
lst=$2
i=$3
_list_tail __t1 $lst $i
: $(($1 = _$((__t1 + __field0))))
: $((__tmp = $1)) $((lst = $4)) $((i = $5)) $((__t1 = $6)) $(($1 = __tmp))
}
: $((__t1 = return_value = o = 0))
_get_opnd() { # o: $2
set $@ $o $return_value $__t1
o=$2
if [ $((o & 1)) != 0 ] ; then
_list_tail __t1 $_stack $((o >> 1))
return_value=$__t1
else
return_value=$o
fi
: $(($1 = _$((return_value + __field0))))
: $((__tmp = $1)) $((o = $3)) $((return_value = $4)) $((__t1 = $5)) $(($1 = __tmp))
}
: $((s = 0))
_get_cont() {
set $@ $s
s=$_stack
while [ $((!(_$((s + __field2)) >> 1))) != 0 ]; do
s=$((_$((s + __field1))))
done
: $(($1 = s))
: $((__tmp = $1)) $((s = $2)) $(($1 = __tmp))
}
: $((l = list = 0))
_lst_length() { # list: $2
set $@ $list $l
list=$2
l=0
while [ $((!(list & 1))) != 0 ] && [ $((_$((list + __field2)) >> 1)) = 0 ]; do
: $((l += 1))
list=$((_$((list + __field1))))
done
: $(($1 = (l << 1) | 1))
: $((__tmp = $1)) $((list = $3)) $((l = $4)) $(($1 = __tmp))
}
_pos=0
_get_byte() {
: $(($1 = _$((_input + (_pos += 1) - 1))))
}
: $((__t1 = x = 0))
_get_code() {
set $@ $x $__t1
_get_byte __t1
x=$((__t1 - 35))
: $(($1 = (x < 0) ? 57: x))
: $((__tmp = $1)) $((x = $2)) $((__t1 = $3)) $(($1 = __tmp))
}
: $((x = n = 0))
_get_int() { # n: $2
set $@ $n $x
n=$2
_get_code x
: $((n *= (92 / 2)))
if [ $x -lt $((92 / 2)) ] ; then
: $(($1 = n + x))
else
_get_int $1 $(((n + x) - (92 / 2)))
fi
: $((__tmp = $1)) $((n = $3)) $((x = $4)) $(($1 = __tmp))
}
: $((__t1 = n = 0))
_symbol_ref() { # n: $2
set $@ $n $__t1
n=$2
_list_ref __t1 $_symbol_table $n
: $(($1 = __t1))
: $((__tmp = $1)) $((n = $3)) $((__t1 = $4)) $(($1 = __tmp))
}
: $((__t1 = root = sym = list = name = 0))
_create_sym() { # name: $2
set $@ $name $list $sym $root $__t1
name=$2
_lst_length __t1 $name
_alloc_rib list $name $__t1 $(((3 << 1) | 1))
_alloc_rib sym $_FALSE $list $(((2 << 1) | 1))
_alloc_rib root $sym $_symbol_table $(((0 << 1) | 1))
: $(($1 = root))
: $((__tmp = $1)) $((name = $3)) $((list = $4)) $((sym = $5)) $((root = $6)) $((__t1 = $7)) $(($1 = __tmp))
}
: $((__t1 = c = accum = n = 0))
_build_sym_table() {
set $@ $n $accum $c $__t1
_get_int n 0
while [ $n -gt 0 ]; do
: $(((n -= 1) + 1))
_create_sym __t1 $((_$((_FALSE + __field1))))
_symbol_table=$__t1
done
accum=$((_$((_FALSE + __field1))))
while [ 1 != 0 ]; do
_get_byte c
if [ $c = 44 ] ; then
_create_sym __t1 $accum
_symbol_table=$__t1
accum=$((_$((_FALSE + __field1))))
continue
fi
if [ $c = 59 ] ; then
break
fi
_alloc_rib __t1 $(((c << 1) | 1)) $accum $(((0 << 1) | 1))
accum=$__t1
done
_create_sym __t1 $accum
_symbol_table=$__t1
: $((__tmp = $1)) $((n = $2)) $((accum = $3)) $((c = $4)) $((__t1 = $5)) $(($1 = __tmp))
}
: $((c = 0))
_set_global() { # c: $2
set $@ $c
c=$2
: $((_$((_$((_symbol_table + __field0)) + __field0)) = c))
_symbol_table=$((_$((_symbol_table + __field1))))
: $((__tmp = $1)) $((c = $3)) $(($1 = __tmp))
}
defarr() { _malloc $1 $2; }
defarr _weights 6
_init_weights() {
: $((_$((_weights + 0)) = 20))
: $((_$((_weights + 1)) = 30))
: $((_$((_weights + 2)) = 0))
: $((_$((_weights + 3)) = 10))
: $((_$((_weights + 4)) = 11))
: $((_$((_weights + 5)) = 4))
}
: $((__t1 = c = x = op = d = n = 0))
_decode() {
set $@ $n $d $op $x $c $__t1
while [ 1 != 0 ]; do
_get_code x
n=$x
op=-1
while [ $n -gt $((2 + (d = _$((_weights + (op += 1)))))) ]; do
: $((n -= (d + 3)))
done
if [ $x -gt 90 ] ; then
op=4
_pop n
else
if [ $((!op)) != 0 ] ; then
_push2 __ $(((0 << 1) | 1)) $(((0 << 1) | 1))
fi
if [ $n -ge $d ] ; then
if [ $n = $d ] ; then
_get_int __t1 0
n=$(((__t1 << 1) | 1))
else
_get_int __t1 $(((n - d) - 1))
_symbol_ref __t1 $__t1
n=$__t1
fi
else
if [ $op -lt 3 ] ; then
_symbol_ref __t1 $n
n=$__t1
else
n=$(((n << 1) | 1))
fi
fi
if [ $op -gt 4 ] ; then
_pop __t1
_alloc_rib2 __t1 $n $(((0 << 1) | 1)) $__t1
_alloc_rib __t1 $__t1 $((_$((_FALSE + __field1)))) $(((1 << 1) | 1))
n=$__t1
if [ $_stack = $(((0 << 1) | 1)) ] ; then
break
fi
op=3
elif [ $op -gt 0 ] ; then
: $(((op -= 1) + 1))
else
op=0
fi
fi
_alloc_rib c $(((op << 1) | 1)) $n 0
: $((_$((c + __field2)) = _$((_stack + __field0))))
: $((_$((_stack + __field0)) = c))
done
_pc=$((_$((_$((n + __field0)) + __field2))))
: $((__tmp = $1)) $((n = $2)) $((d = $3)) $((op = $4)) $((x = $5)) $((c = $6)) $((__t1 = $7)) $(($1 = __tmp))
}
: $((str = current = length = i = s = 0))
_scm2str() { # s: $2
set $@ $s $i $length $current $str
s=$2
i=0
length=$((_$((s + __field1)) >> 1))
current=$((_$((s + __field0))))
_malloc str $((length + 1))
i=0
while [ $i -lt $length ]; do
: $((_$((str + i)) = (_$((current + __field0)) >> 1)))
current=$((_$((current + __field1))))
: $(((i += 1) - 1))
done
: $((_$((str + length)) = __NUL__))
: $(($1 = str))
: $((__tmp = $1)) $((s = $3)) $((i = $4)) $((length = $5)) $((current = $6)) $((str = $7)) $(($1 = __tmp))
}
: $((x = 0))
_bool2scm() { # x: $2
set $@ $x
x=$2
if [ $x != 0 ] ; then
: $(($1 = _$((_FALSE + __field0))))
else
: $(($1 = _FALSE))
fi
: $((__tmp = $1)) $((x = $3)) $(($1 = __tmp))
}
: $((__t1 = filename = num_args = bytes_read = success = buffer = file = arg = new_rib = z = y = x = no = 0))
_prim() { # no: $2
set $@ $no $x $y $z $new_rib $arg $file $buffer $success $bytes_read $num_args $filename $__t1
no=$2
_malloc buffer 1
if [ $no = 0 ] ; then
_alloc_rib __t1 $(((0 << 1) | 1)) $(((0 << 1) | 1)) $(((0 << 1) | 1))
new_rib=$__t1
_pop z
_pop y
_pop x
: $((_$((new_rib + __field0)) = x))
: $((_$((new_rib + __field1)) = y))
: $((_$((new_rib + __field2)) = z))
_push2 __ $new_rib $(((0 << 1) | 1))
elif [ $no = 1 ] ; then
_pop x
_close __ $((x >> 1))
elif [ $no = 2 ] ; then
_pop y
_pop x
: $((_$((buffer + 0)) = (x >> 1)))
_write success $((y >> 1)) $buffer 1
if [ $success != 1 ] ; then
defstr __str_1 "Cannot write to file."
_perror __ $__str_1
fi
_push2 __ $((_$((_FALSE + __field0)))) $(((0 << 1) | 1))
elif [ $no = 3 ] ; then
_pop x
_read bytes_read $((x >> 1)) $buffer 1
if [ $((!bytes_read)) != 0 ] ; then
_push2 __ $((_$((_FALSE + __field1)))) $(((0 << 1) | 1))
else
_push2 __ $(((_$((buffer + 0)) << 1) | 1)) $(((0 << 1) | 1))
fi
elif [ $no = 4 ] ; then
_pop x
_scm2str filename $x
_open file $filename 1
if [ $file -lt 0 ] ; then
_push2 __ $_FALSE $(((0 << 1) | 1))
else
_push2 __ $(((file << 1) | 1)) $(((0 << 1) | 1))
fi
_free __ $filename
elif [ $no = 5 ] ; then
_pop x
_scm2str filename $x
_open file $filename 0
if [ $file -lt 0 ] ; then
_push2 __ $_FALSE $(((0 << 1) | 1))
else
_push2 __ $(((file << 1) | 1)) $(((0 << 1) | 1))
fi
_free __ $filename
elif [ $no = 6 ] ; then
_push2 __ $(((1 << 1) | 1)) $(((0 << 1) | 1))
elif [ $no = 7 ] ; then
_push2 __ $(((0 << 1) | 1)) $(((0 << 1) | 1))
elif [ $no = 8 ] ; then
_pop y
_pop x
num_args=0
: $((_$((_$((_FALSE + __field0)) + __field0)) = x))
arg=$y
while [ $arg != $((_$((_FALSE + __field1)))) ]; do
_push2 __ $arg $(((0 << 1) | 1))
arg=$((_$((_stack + __field0))))
: $((_$((_stack + __field0)) = _$((arg + __field0))))
arg=$((_$((arg + __field1))))
: $(((num_args += 1) - 1))
done
_push2 __ $(((num_args << 1) | 1)) $(((0 << 1) | 1))
x=$((_$((_$((_FALSE + __field0)) + __field0))))
: $(($1 = x))
: $((__tmp = $1)) $((no = $3)) $((x = $4)) $((y = $5)) $((z = $6)) $((new_rib = $7)) $((arg = $8)) $((file = $9)) $((buffer = ${10})) $((success = ${11})) $((bytes_read = ${12})) $((num_args = ${13})) $((filename = ${14})) $((__t1 = ${15})) $(($1 = __tmp))
return
elif [ $no = 9 ] ; then
_pop x
_push2 __ $x $(((0 << 1) | 1))
elif [ $no = 10 ] ; then
_pop __
elif [ $no = 11 ] ; then
_pop x
_pop __
_push2 __ $x $(((0 << 1) | 1))
elif [ $no = 12 ] ; then
x=$((_$((_$((_stack + __field0)) + __field0))))
y=$((_$((_stack + __field1))))
_alloc_rib __t1 $x $y $(((1 << 1) | 1))
: $((_$((_stack + __field0)) = __t1))
elif [ $no = 13 ] ; then
_pop x
_bool2scm __t1 $((!(x & 1)))
_push2 __ $__t1 $(((0 << 1) | 1))
elif [ $no = 14 ] ; then
_pop x
_push2 __ $((_$((x + __field0)))) $(((0 << 1) | 1))
elif [ $no = 15 ] ; then
_pop x
_push2 __ $((_$((x + __field1)))) $(((0 << 1) | 1))
elif [ $no = 16 ] ; then
_pop x
_push2 __ $((_$((x + __field2)))) $(((0 << 1) | 1))
elif [ $no = 17 ] ; then
_pop y
_pop x
_push2 __ $((_$((x + __field0)) = y)) $(((0 << 1) | 1))
elif [ $no = 18 ] ; then
_pop y
_pop x
_push2 __ $((_$((x + __field1)) = y)) $(((0 << 1) | 1))
elif [ $no = 19 ] ; then
_pop y
_pop x
_push2 __ $((_$((x + __field2)) = y)) $(((0 << 1) | 1))
elif [ $no = 20 ] ; then
_pop y
_pop x
_bool2scm __t1 $((x == y))
_push2 __ $__t1 $(((0 << 1) | 1))
elif [ $no = 21 ] ; then
_pop y
_pop x
_bool2scm __t1 $(((x >> 1) < (y >> 1)))
_push2 __ $__t1 $(((0 << 1) | 1))
elif [ $no = 22 ] ; then
_pop y
_pop x
_push2 __ $(((x + y) - 1)) $(((0 << 1) | 1))
elif [ $no = 23 ] ; then
_pop y
_pop x
_push2 __ $(((x - y) + 1)) $(((0 << 1) | 1))
elif [ $no = 24 ] ; then
_pop y
_pop x
_push2 __ $(((((x >> 1) * (y >> 1)) << 1) | 1)) $(((0 << 1) | 1))
elif [ $no = 25 ] ; then
_pop y
_pop x
if [ $((y >> 1)) -lt 0 ] ; then
_push2 __ $(((-(((x >> 1) / -((y >> 1)))) << 1) | 1)) $(((0 << 1) | 1))
else
_push2 __ $(((((x >> 1) / (y >> 1)) << 1) | 1)) $(((0 << 1) | 1))
fi
elif [ $no = 26 ] ; then
_pop x
exit $((x >> 1))
else
exit 6
fi
_free __ $buffer
: $(($1 = (0 << 1) | 1))
: $((__tmp = $1)) $((no = $3)) $((x = $4)) $((y = $5)) $((z = $6)) $((new_rib = $7)) $((arg = $8)) $((file = $9)) $((buffer = ${10})) $((success = ${11})) $((bytes_read = ${12})) $((num_args = ${13})) $((filename = ${14})) $((__t1 = ${15})) $(($1 = __tmp))
}
: $((__t1 = opnd = x = p = rest = new_pc = k = c2 = s2 = proc = jump = vari = nparams = nparams_vari = nargs = instr = i = 0))
_run() {
set $@ $i $instr $nargs $nparams_vari $nparams $vari $jump $proc $s2 $c2 $k $new_pc $rest $p $x $opnd $__t1
while [ 1 != 0 ]; do
instr=$((_$((_pc + __field0)) >> 1))
if [ $instr = 5 ] ; then
exit 0
elif [ $instr = 0 ] ; then
jump=$((_$((_pc + __field2)) == ((0 << 1) | 1)))
_get_opnd proc $((_$((_pc + __field1))))
while [ 1 != 0 ]; do
if [ $((_$((proc + __field0)) & 1)) != 0 ] ; then
_pop __
_prim proc $((_$((proc + __field0)) >> 1))
if [ $((!(proc & 1))) != 0 ] ; then
continue
fi
if [ $jump != 0 ] ; then
_get_cont _pc
: $((_$((_stack + __field1)) = _$((_pc + __field0))))
fi
_pc=$((_$((_pc + __field2))))
else
_pop __t1
nargs=$((__t1 >> 1))
_alloc_rib __t1 $(((0 << 1) | 1)) $proc $(((0 << 1) | 1))
s2=$__t1
proc=$((_$((s2 + __field1))))
: $((_$((_pc + __field0)) = _$((proc + __field0))))
nparams_vari=$((_$((_$((proc + __field0)) + __field0)) >> 1))
nparams=$((nparams_vari >> 1))
vari=$((nparams_vari & 1))
if [ $((vari ? (nparams > nargs): (nparams != nargs))) != 0 ] ; then
printf "Unexpected number of arguments\n"
exit 1
fi
: $((nargs -= nparams))
if [ $vari != 0 ] ; then
rest=$((_$((_FALSE + __field1))))
i=0
while [ $i -lt $nargs ]; do
_pop __t1
_alloc_rib __t1 $__t1 $rest $s2
rest=$__t1
s2=$((_$((rest + __field2))))
: $((_$((rest + __field2)) = (0 << 1) | 1))
: $((i += 1))
done
_alloc_rib __t1 $rest $s2 $(((0 << 1) | 1))
s2=$__t1
fi
i=0
while [ $i -lt $nparams ]; do
_pop __t1
_alloc_rib __t1 $__t1 $s2 $(((0 << 1) | 1))
s2=$__t1
: $((i += 1))
done
nparams=$((nparams + vari))
_list_tail __t1 $s2 $nparams
c2=$__t1
if [ $jump != 0 ] ; then
_get_cont k
: $((_$((c2 + __field0)) = _$((k + __field0))))
: $((_$((c2 + __field2)) = _$((k + __field2))))
else
: $((_$((c2 + __field0)) = _stack))
: $((_$((c2 + __field2)) = _$((_pc + __field2))))
fi
_stack=$s2
new_pc=$((_$((_pc + __field0))))
: $((_$((_pc + __field0)) = (instr << 1) | 1))
_pc=$((_$((new_pc + __field2))))
fi
break
done
elif [ $instr = 1 ] ; then
x=$((_$((_stack + __field0))))
if [ $((_$((_pc + __field1)) & 1)) != 0 ] ; then
_list_tail __t1 $_stack $((_$((_pc + __field1)) >> 1))
opnd=$__t1
else
opnd=$((_$((_pc + __field1))))
fi
: $((_$((opnd + __field0)) = x))
_stack=$((_$((_stack + __field1))))
_pc=$((_$((_pc + __field2))))
elif [ $instr = 2 ] ; then
_get_opnd __t1 $((_$((_pc + __field1))))
_push2 __ $__t1 $(((0 << 1) | 1))
_pc=$((_$((_pc + __field2))))
elif [ $instr = 3 ] ; then
_push2 __ $((_$((_pc + __field1)))) $(((0 << 1) | 1))
_pc=$((_$((_pc + __field2))))
elif [ $instr = 4 ] ; then
_pop p
if [ $p != $_FALSE ] ; then
_pc=$((_$((_pc + __field1))))
else
_pc=$((_$((_pc + __field2))))
fi
else
exit 6
fi
done
: $((__tmp = $1)) $((i = $2)) $((instr = $3)) $((nargs = $4)) $((nparams_vari = $5)) $((nparams = $6)) $((vari = $7)) $((jump = $8)) $((proc = $9)) $((s2 = ${10})) $((c2 = ${11})) $((k = ${12})) $((new_pc = ${13})) $((rest = ${14})) $((p = ${15})) $((x = ${16})) $((opnd = ${17})) $((__t1 = ${18})) $(($1 = __tmp))
}
: $((first = 0))
_setup_stack() {
set $@ $first
_push2 __ $(((0 << 1) | 1)) $(((0 << 1) | 1))
_push2 __ $(((0 << 1) | 1)) $(((0 << 1) | 1))
first=$((_$((_stack + __field1))))
: $((_$((_stack + __field1)) = (0 << 1) | 1))
: $((_$((_stack + __field2)) = first))
: $((_$((first + __field0)) = (5 << 1) | 1))
: $((_$((first + __field1)) = (0 << 1) | 1))
: $((_$((first + __field2)) = (0 << 1) | 1))
: $((__tmp = $1)) $((first = $2)) $(($1 = __tmp))
}
: $((__t2 = __t1 = 0))
_init() {
set $@ $__t1 $__t2
_init_weights __
_init_heap __
_alloc_rib __t1 $(((0 << 1) | 1)) $(((0 << 1) | 1)) $(((5 << 1) | 1))
_alloc_rib __t2 $(((0 << 1) | 1)) $(((0 << 1) | 1)) $(((5 << 1) | 1))
_alloc_rib __t1 $__t1 $__t2 $(((5 << 1) | 1))
_FALSE=$__t1
_build_sym_table __
_decode __
_alloc_rib __t1 $(((0 << 1) | 1)) $_symbol_table $(((1 << 1) | 1))
_set_global __ $__t1
_set_global __ $_FALSE
_set_global __ $((_$((_FALSE + __field0))))
_set_global __ $((_$((_FALSE + __field1))))
_setup_stack __
_run __
: $((__tmp = $1)) $((__t1 = $2)) $((__t2 = $3)) $(($1 = __tmp))
}
_main() {
_init __
}
# Character constants
readonly __NUL__=0
# Runtime library
_free() { # $2 = object to free
__ptr=$(($2 - 1)) # Start of object
__end=$((__ptr + _$__ptr)) # End of object
while [ $__ptr -lt $__end ]; do
unset "_$__ptr"
: $((__ptr += 1))
done
: $(($1 = 0)) # Return 0
}
# Unpack a Shell string into an appropriately sized buffer
unpack_line() { # $1: Shell string, $2: Buffer, $3: Ends with EOF?
__fgetc_buf=$1
__buffer=$2
__ends_with_eof=$3
__fgetc_buf16=
__stdin_buf256=
__continue=1
while [ $__continue != 0 ] ; do
if [ -z "$__stdin_buf256" ]; then
if [ ${#__fgetc_buf} -ge 256 ]; then
__temp="${__fgetc_buf#????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????}"
__stdin_buf256="${__fgetc_buf%"$__temp"}"
__fgetc_buf="$__temp"
else
__stdin_buf256="$__fgetc_buf"
__fgetc_buf=
fi
fi
if [ -z "$__fgetc_buf16" ]; then
if [ ${#__stdin_buf256} -ge 16 ]; then
__temp="${__stdin_buf256#????????????????}"
__fgetc_buf16="${__stdin_buf256%"$__temp"}"
__stdin_buf256="$__temp"
else
__fgetc_buf16="$__stdin_buf256"
__stdin_buf256=
__continue=0
fi
fi
while [ ! -z "$__fgetc_buf16" ]; do
case "$__fgetc_buf16" in
" "*) : $((_$__buffer = 32)) ;;
"e"*) : $((_$__buffer = 101)) ;;
"="*) : $((_$__buffer = 61)) ;;
"t"*) : $((_$__buffer = 116)) ;;
";"*) : $((_$__buffer = 59)) ;;
"i"*) : $((_$__buffer = 105)) ;;
")"*) : $((_$__buffer = 41)) ;;
"("*) : $((_$__buffer = 40)) ;;
"n"*) : $((_$__buffer = 110)) ;;
"s"*) : $((_$__buffer = 115)) ;;
"l"*) : $((_$__buffer = 108)) ;;
"+"*) : $((_$__buffer = 43)) ;;
"p"*) : $((_$__buffer = 112)) ;;
"a"*) : $((_$__buffer = 97)) ;;
"r"*) : $((_$__buffer = 114)) ;;
"f"*) : $((_$__buffer = 102)) ;;
"d"*) : $((_$__buffer = 100)) ;;
"*"*) : $((_$__buffer = 42)) ;;
*)
char_to_int "${__fgetc_buf16%"${__fgetc_buf16#?}"}"
: $((_$__buffer = __c))
;;
esac
__fgetc_buf16=${__fgetc_buf16#?} # Remove the first character
: $((__buffer += 1)) # Move to the next buffer position
done
done
if [ $__ends_with_eof -eq 0 ]; then # Ends with newline and not EOF?
: $((_$__buffer = 10)) # Line ends with newline
: $((__buffer += 1))
fi
: $((_$__buffer = 0)) # Then \0
}
refill_buffer() { # $1: fd
__fd=$1
__buffer=$((__buffer_fd$__fd))
IFS=
__ends_with_eof=0
read -r __temp_buf <&$__fd || __ends_with_eof=1
# Check that the buffer is large enough to unpack the line
__buflen=$((__buflen_fd$__fd - 2)) # Minus 2 to account for newline and \0
__len=${#__temp_buf}
if [ $__len -gt $__buflen ]; then
# Free buffer and reallocate a new one double the line size