brainfuck interpreter
brainfuck
cli
rust
main, evaluator: scaffolding for step debugger
- new argument (-d/--debug)
- data_oob short arg is now -p
- threaded debug arg into main and vm/vmbuilder in evaluator
+18
+9
src/evaluator.rs
+9
src/evaluator.rs
···
127
127
pub struct VM {
128
128
filename: Arc<str>,
129
129
source: Arc<str>,
130
+
debug: bool,
130
131
tape: Vec<u8>,
131
132
data_pointer: usize,
132
133
inst_pointer: usize,
···
140
141
141
142
pub struct VMBuilder {
142
143
filename: Arc<str>,
144
+
debug: bool,
143
145
source: Arc<str>,
144
146
tape: Vec<u8>,
145
147
data_oob: OOBBehavior,
···
155
157
VMBuilder {
156
158
filename: Arc::from(""),
157
159
source: Arc::from(""),
160
+
debug: false,
158
161
tape: vec![0; DEFAULT_TAPE_LENGTH],
159
162
data_oob: OOBBehavior::Error,
160
163
cell_oob: OOBBehavior::Wrap,
···
171
174
self
172
175
}
173
176
177
+
pub fn debug(mut self, debug: bool) -> Self {
178
+
self.debug = debug;
179
+
self
180
+
}
181
+
174
182
pub fn tape(mut self, length: usize) -> Self {
175
183
self.tape = vec![0; length];
176
184
self
···
209
217
pub fn build(self) -> VM {
210
218
VM {
211
219
filename: self.filename,
220
+
debug: self.debug,
212
221
source: self.source,
213
222
tape: self.tape,
214
223
data_pointer: 0,
+9
src/main.rs
+9
src/main.rs
···
16
16
#[arg(
17
17
short = 'd',
18
18
long,
19
+
help = "enable step debugger",
20
+
default_value_t = false
21
+
)]
22
+
debug: bool,
23
+
24
+
#[arg(
25
+
short = 'p',
26
+
long,
19
27
help = "set data pointer out-of-bounds behavior",
20
28
default_value = "error"
21
29
)]
···
71
79
};
72
80
73
81
let mut machine = VM::builder()
82
+
.debug(args.debug)
74
83
.source(args.path, content)
75
84
.tape(args.length)
76
85
.data_oob(args.data_oob)