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add rust backend #17

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Aug 29, 2024
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add rust backend #17

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2 changes: 1 addition & 1 deletion awib-skeleton.b
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Expand Up @@ -34,7 +34,7 @@
// T=6: lang_ruby
// T=5: (null)
// T=4: lang_go
// T=3: (null)
// T=3: lang_rust

#include(lang_generic/backend.b)

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9 changes: 4 additions & 5 deletions frontend/frontend.b
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Expand Up @@ -97,11 +97,10 @@
<[-
# build target string for backend index 3
% T X 0 0 0 (target) 0 s 3 *0 0
>>+++++++[->+++++++<]++++++++++>
[->++>++>++>++>++>++>++>++>++>++<<<<<<<<<<]>
++++++++++>->++++++++++++>+++++>--->++>+++++++++++++++++++>+++++++++++>
+++++++++++>+++++++++++++++++++++++<<<<<<<<<<<<<
% T X 0 0 0 (target) 0 s 3 *0 0 10 0 "lang_dummy" 0
>+++++++++[->+>++++++++++++<<]>>[->+>+>+>+>+>+>+>+>+<<<<<<<<<]
>>----------->++>----->------------->++++++>+++++++++>+++++++>++++++++
<<<<<<<<<<<<
% T X 0 0 0 (target) 0 s 3 *0 0 9 0 "lang_rust" 0
]>]

<[-
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66 changes: 66 additions & 0 deletions lang_generic/DEVEL
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Expand Up @@ -262,3 +262,69 @@ Postcondition is:
| | run stdin stdout |
+--------------+------------------------------------------------------------+
Table 5 - Language definition for Tcl

### Rust

+--------------+------------------------------------------------------------+
| Code block | Output |
+--------------+------------------------------------------------------------+
| code_ADD | buf[p] = buf[p].wrapping_add( |
+--------------+------------------------------------------------------------+
| code_INPUT | i.read(&mut buf[p..p+1])?; |
+--------------+------------------------------------------------------------+
| code_SUB | buf[p] = buf[p].wrapping_sub( |
+--------------+------------------------------------------------------------+
| code_OUTPUT | o.write(&buf[p..p+1])?; |
+--------------+------------------------------------------------------------+
| code_LEFT | p -= |
+--------------+------------------------------------------------------------+
| code_RIGHT | p += |
+--------------+------------------------------------------------------------+
| code_OPEN | while buf[p] != 0 { |
+--------------+------------------------------------------------------------+
| code_CLOSE | } |
+--------------+------------------------------------------------------------+
| code_SET | buf[p] = |
+--------------+------------------------------------------------------------+
| code_LMUL1 | let t = p - |
+--------------+------------------------------------------------------------+
| code_LMUL2 | ; buf[t] = buf[t].wrapping_add(buf[p].wrapping_mul( |
+--------------+------------------------------------------------------------+
| code_RMUL1 | let t = p + |
+--------------+------------------------------------------------------------+
| code_RMUL2 | ; buf[t] = buf[t].wrapping_add(buf[p].wrapping_mul( |
+--------------+------------------------------------------------------------+
| post_ADD | ); |
+--------------+------------------------------------------------------------+
| post_SUB | ); |
+--------------+------------------------------------------------------------+
| post_LEFT | ; |
+--------------+------------------------------------------------------------+
| post_RIGHT | ; |
+--------------+------------------------------------------------------------+
| post_SET | ; |
+--------------+------------------------------------------------------------+
| post_LMUL2 | )); |
+--------------+------------------------------------------------------------+
| post_RMUL2 | )); |
+--------------+------------------------------------------------------------+
| header | use std::io::{self, Read, Write}; |
| | |
| | #[allow(unused_variables)] |
| | #[allow(unused_mut)] |
| | fn run<R, W>(mut i: R, mut o: W) -> io::Result<()> |
| | where |
| | R: Read, |
| | W: Write, |
| | { |
| | let mut p = 127; |
| | let mut buf = [0u8; 0x10100]; |
+--------------+------------------------------------------------------------+
| footer | Ok(()) |
| | } |
| | |
| | fn main() -> io::Result<()> { |
| | return run(std::io::stdin(), std::io::stdout()); |
| | } |
+--------------+------------------------------------------------------------+
Table 5 - Language definition for Rust
7 changes: 5 additions & 2 deletions lang_generic/backend.b
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Expand Up @@ -17,6 +17,7 @@

# run language definition according to T with S=P
% 1 *T T D d D d 7(0) P P 0 Q (code)

---[-[-[-[-[<->++++[-]]

<[->>>>>
Expand All @@ -43,8 +44,10 @@
<<<<<]>]

<[->>>>>
# T=3: (null)
# A dummy backend lived here once upon a time
# T=3: lang_rust
% (stuff) *D d 7(0) S (stuff)
#include(rust.b)

<<<<<]

>>>>>>>>>>>>>>>>
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232 changes: 232 additions & 0 deletions lang_generic/rust.b
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@@ -0,0 +1,232 @@
% (stuff) *D d 7(0) S (stuff)
% where integer S indicates which code block to output
% 16 b integer Dd is loop depth

# indentation if S le 13: 2*add(D*256 d) blank spaces
>>>>>>>+>>
-[-[-[-[-[-[-[-[-[-[-[-[-[<<->>[-<+>]]
<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+>]<+<
% D d 0 0 0 0 0 *c S 0 (where c == S le 13 ? 1 : 0)
[-<<<<++++[-<++++++++>]<....<[->....<]
<[->++++++++++++++++[->................................
................................<]<]>>[-]>>>>>]
<<<<<<<[-]>[-]>>>>>>
% (stuff) 7(0) *0 S 0 (stuff)

+>-[-[-[-[-[-[-[-[-[-[-[-[-[--------[--[--[-[---[--[--[---[-
[<->++++++++++++++++++++++++++++++++++++++[-]]

<[-
# footer
<<<<<<<+++++++++++++++++++++[->++++>++++
++>++>++>+++++>+++++<<<<<<]>>>----------
....<<-----.>>>>++.<--..+..<<<<+++++++++
+.>>-.<<..>>>>>>---.<+++.<<.>>-.>-----.<
----.+++++.<-.+.<.>++++.++++++++++++++++
+.<.>>-----.++++++.<----..<<<+++.>>>>>++
++.<++++.++.>+++++++.<-.<++.<++++++++.+.
>++.<---------.<--.<<.>>>....>>--.>-----
--.<++.+.---.----.<<.>>++++.+++.-------.
<<++++++++.>>+++++.+.>-.<<----..>>+++++.
<-----.<..>++++.+.>-----.+++++.+++++.<<<
.+.+++.------------.>>-.+.>----------.<<
..>>+++++.<-----.<..>++++.+.>-----.<----
-.++++++.-.<<++++++++.+..>+.<<<<.>>++.<<
.[<]>[[-]>]
]>]

<[-
# header
<<<<<<<+++++++++++++++++++[->++>++>++++>
+++>++++++>+++++<<<<<<]>>>>>+++.--.>++++
++.<<<<------.>>>.+.>-.<<+..>>+++++.<---
--.<..>++++++++++++.--------.>----.+++++
++.------.<<<<<++++++.>.>++++++.>>>-.---
-.+++.<<<<<.>.>+++++.>>-.>+++++.<++.>---
-.<+++++++++.<+.<<<<++++++++++..>>+++.>+
+++.++++++.>>>+++++++..+++.<------.<<<<-
---.>>>>--.>-.<.--.<<++++.-.-----.>>+++.
<<++.>>----.>-----.<<<.+.>>>+++.<<<+++.>
>+.<<<<+.>>--------.<<<.>>.>--.++++++.>>
>..+++.<++++.<<<<-.>>>>--.>-.<.--.<<++++
.-.-----.>>>-.<++.-.<<<<+.>>--.<<<.>>>++
+++++++.>>>+.<<<<---.>>>--.+++.>.<<+.<--
------------------.<<+++.>.>+++++.>++.<<
<----.>>>>>-.<.-.<<<.>>>>----.<<----.<<.
>-----.<<++++.>.>>>>++++.<+.-.<<<.>>>>++
.<<.<<.>+++++.<<---.>.<++++.>>>++++.<<.>
>>>------.<-----.<----..<-----.>>>----.<
++++.++.>+++++++.<-.<++.<<<-----.+.>>>++
.<<<<.>>>>>+++.>----.---.<-----.>.<<<<<<
.>>....>.>----.<<.>.>>>.----.+++.<<<<<++
+.<.>>....>+++++.>.<<.>.>>.>+++++.<++.>-
---.<<<<<.<.>>>>>+++++++.<<<<<.>>....>>>
>+++++++.-------.<-------.<<<.>>>-------
.++++++++.-.<<<.>>>----.<<<.>>+++.<<.<++
+++.+.+++++.++++.<.>>....>>>----.>.<++++
++++.<<<.>>>-------.++++++++.-.<<<.>>>>-
--.<+.>++++.<<<<.>>.<<.>++++.<<---------
--.>>>>.<-----.+++.<<.<.>>>>+++.<<<<+.-.
+.-..>>++.>.<<<<.[[-]>]
]>]

<[-
# post_RMUL2
++++++[->+++++++<]>-..>+++[-<++++++>]<.
+[------<+>]<.[-]
]>]

<[-
# post_LMUL2
++++++[->+++++++<]>-..>+++[-<++++++>]<.
+[------<+>]<.[-]
]>]

<[-
# post_SET
++++++++++[->++++++<]>-.+[------<+>]<.[-]
]>]

<[-
# post_RIGHT
++++++++++[->++++++<]>-.+[------<+>]<.[-]
]>]

<[-
# post_LEFT
++++++++++[->++++++<]>-.+[------<+>]<.[-]
]>]

<[-
# post_SUB
++++++[->+++++++<]>-.>+++[-<++++++>]<.+
[------<+>]<.[-]
]>]

<[-
# post_ADD
++++++[->+++++++<]>-.>+++[-<++++++>]<.+
[------<+>]<.[-]
]>]

<[-
# code_RMUL2
<<<<<<+++++++++++++++++++++++++[->++>+>
++++>+++++>++++<<<<<]>+++++++++.>+++++++
.>--.>--------.>++.<<-------.>-.<++.<.<+
+.>.>+++++.>+.>.<<-------.>-.<++.<++++++
++++++++.>>+++.-----.<++++.>--..>+++.<--
.>--.<<--.++.+++..<------.>--.>+++++++.>
-.<<-------.>-----.<++.<++++++.>>+++++++
.-----.<++++.>--..>+++.<--.>--.<<--.>-.+
+++++++.>+++++.<<<------.<[[-]>]
]>]

<[-
# code_RMUL1
<<<<<<++++++++++++++++++++[->++>+++>++>+
++++>+++++<<<<<]>>>>++++++++.>+.<+++++++
+.<--------.>.<.<+.>.>----.<.<<+++.
[[-]>]
]>]

<[-
# code_LMUL2
<<<<<<+++++++++++++++++++++++++[->++>+>
++++>+++++>++++<<<<<]>+++++++++.>+++++++
.>--.>--------.>++.<<-------.>-.<++.<.<+
+.>.>+++++.>+.>.<<-------.>-.<++.<++++++
++++++++.>>+++.-----.<++++.>--..>+++.<--
.>--.<<--.++.+++..<------.>--.>+++++++.>
-.<<-------.>-----.<++.<++++++.>>+++++++
.-----.<++++.>--..>+++.<--.>--.<<--.>-.+
+++++++.>+++++.<<<------.<
[[-]>]
]>]

<[-
# code_LMUL1
<<<<<<++++++++++++++++++++++[->+++++>++>
+++++>+>+++<<<<<]>--.-------.>>++++++.>+
+++++++++.<.>.>-----.<.<----.>.<<+.<
[[-]>]
]>]

<[-
# code_SET
<<<<<++++++++++++++++++++++++++++++[->++
>+>+++>++++<<<<]>>>++++++++.>---.<++++.-
----------.>-----.<++.<++.<+.>.<[[-]>]
]>]

<[-
# code_CLOSE
++++++++++[->++++++++++++<]>+++++.[-]+++
+++++++.[-]<
]>]

<[-
# code_OPEN
<<<<<+++++++++++++++++++++++++++++++[->+
+++>+++>+>++<<<<]>-----.>+++++++++++.+.+
++.-------.>+.<---.<--.>++++.-----------
.<-----.>++.>.+.>-.<-.>-------------.<.<
<+++++++++++.<++++++++++.[[-]>]
]>]

<[-
# code_RIGHT
<<<<<++++++++++++++++++++++++++++[->+>++
>++++>+<<<<]>>>.>++++.+++++++++++.<<++++
+.<++++.[[-]>]
]>]

<[-
# code_LEFT
<<<<<++++++++++++++++++++++++++++[->++++
>+>++>++<<<<]>.>++++.>-----------.>+++++
.<<.<[[-]>]
]>]

<[-
# code_OUTPUT
<<<<<<+++++++++++++++++++++[->+++>++>+++
++>+++++>++<<<<<]>>>++++++.<++++.>++++++
++.-----.>.<++.>----.>--.--.<---.<+.>+++
+.-----------.<-----.<..>.<---.++++++.>>
++.>+++.<<<<.----.<++++++++++.[[-]>]
]>]

<[-
# code_SUB
<<<<<++++++++++++++++++++++++++++++[->++
>+>+++>++++<<<<]>>>++++++++.>---.<++++.-
----------.>-----.<++.<++.<+.>.>+++++.>+
++++.<++++.-----------.>-----.<++.<+++++
+++++++++.>>+++++++.-----.<++++.>--..---
----.+++++.<++++++.--------.>+++++.++.<+
++.<------.<[[-]>]
]>]

<[-
# code_INPUT
<<<<<<+++++++++++++++++++++[->+++>++>+++
++>+++++>++<<<<<]>>>.<++++.>+++++++++.>-
---.----.+++.>--.--.<<-----.++++++++.-.>
>------.<--.<+.>++++.-----------.<-----.
<..>.<---.++++++.>>++.<<--------.<.----.
<++++++++++.[[-]>]
]>]

<[-
# code_ADD
<<<<<++++++++++++++++++++++++++++++[->++
++>+++>+>++<<<<]>>++++++++.<---.>++++.--
---------.<-----.>++.>++.>+.<.<+++++.<++
+++.>++++.-----------.<-----.>++.>++++++
++++++++.<<+++++++.-----.>++++.<--..----
---.+++++.-------.>--.++.+++..>------.<<
[[-]>]
]<<<<<<<

% (stuff) *0 9(0) (stuff)
24 changes: 24 additions & 0 deletions test/rust_test.py
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@@ -0,0 +1,24 @@
import subprocess
import os

import backend


class RustTest(backend.LangGenericTestCase):
BACKEND_INDEX = 3
MAX_NESTED_LOOPS = 95

def run_program(self, path, input):
os.rename(path, path + ".rs")
subprocess.call(["rustc", path + ".rs", "-o", path])
p = subprocess.Popen([path],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
stdout, stderr = p.communicate(input)
self.assertEqual(p.returncode, 0)
return stdout


if __name__ == "__main__":
import unittest
unittest.main()
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