brainfuck/brainf.fasml at main · Fun-Assembly/brainfuck · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205

MOV $mem_size 1024

IF NEQ $ARGC 2
[
    IF NEQ $ARGC 3
    [
        PRT Usage: $0 <file> $LBR
        PRT optional: memory-size, default: $mem_size
        PRT $RBR $ENDL
        BYE 1
    ]
]

MOV $file $1

FREAD $buf $file $except

IF NEQ $except 0
[
    PRT $0
    PRT : Error: $file
    PRT : No such file $ENDL
    BYE 1
]

IF EQL $ARGC 3
[
    MOV $mem_size $2
]

CALL len $buf
RECV $len

MOV $line_count 1
MOV $char_count 1

MOV $i 0
STR $buf

MOV $tos -1

> $loop
IF LSS $i $len
[
    ARRV $c $buf $i

    IF SEQL $c $ENDL
    [
        ADD $line_count $line_count 1
        INT $line_count $line_count
        MOV $char_count 1
        JMP $endif
    ]
    IF SEQL $c $LBR
    [
        FCALL $push
        JMP $endif
    ]
    IF SEQL $c $RBR
    [
        IF EQL $tos -1
        [
            PRT $0
            PRT : Error: $file
            PRT : Unmatched '
            PRT $RBR
            PRT ' at line $line_count
            PRT , char $char_count $ENDL
            BYE 1
        ]

        FCALL $pop

        ARR $pairs $i $temp
        ARR $pairs $temp $i
    ]

    > $endif

    ADD $i $i 1
    INT $i $i

    JMP $loop
]

IF NEQ $tos -1
[
    PRT $0
    PRT : Error: $file
    PRT : Unmatched '
    PRT $LBR
    PRT ' at line $line_count
    PRT , char $char_count $ENDL
    BYE 1
]

MOV $i 0

> $init
IF LSS $i $mem_size
[
    ARR $tape $i 0
    ADD $i $i 1
    INT $i $i
    JMP $init
]

MOV $i 0
MOV $j 0

MOV $MAX 256

> $interpret
IF LSS $i $len
[
    ARRV $c $buf $i

    IF SEQL $c +
    [
        ARRV $temp $tape $j
        EXPR $temp ( $temp + 1 ) % $MAX
        INT $temp $temp
        ARR $tape $j $temp
        JMP $endif2
    ]
    IF SEQL $c -
    [
        ARRV $temp $tape $j
        EXPR $temp ( $temp - 1 ) % $MAX
        INT $temp $temp
        ARR $tape $j $temp
        JMP $endif2
    ]
    IF SEQL $c $LBR
    [
        ARRV $temp $tape $j

        IF EQL $temp 0
        [
            ARRV $i $pairs $i
        ]

        JMP $endif2
    ]
    IF SEQL $c $RBR
    [
        ARRV $temp $tape $j

        IF NEQ $temp 0
        [
            ARRV $i $pairs $i
        ]

        JMP $endif2
    ]
    IF SEQL $c <
    [
        EXPR $j ( $j - 1 ) % $mem_size
        JMP $endif2
    ]
    IF SEQL $c >
    [
        EXPR $j ( $j + 1 ) % $mem_size
        JMP $endif2
    ]
    IF SEQL $c .
    [
        ARRV $temp $tape $j
        CHAR $temp $temp
        PRT $temp
        JMP $endif2
    ]
    IF SEQL $c ,
    [
        SCN $temp
        ARR $tape $j $temp
    ]

    > $endif2

    ADD $i $i 1
    INT $i $i
    JMP $interpret
]

BYE 0

> $push

    ADD $tos $tos 1
    INT $tos $tos

    ARR $stk $tos $i

    FRET

> $pop

    ARRV $temp $stk $tos

    SUB $tos $tos 1
    INT $tos $tos

    FRET