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Fix formatting and example lint after shroud->noxis rename

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- cargo fmt --all: shorter crate identifiers reflowed `use {...}` lists
- noxis/examples/dbg.rs: allow unwrap_used/expect_used (scratch harness),
  add module doc
This commit is contained in:
Loki 2026-10-08 22:04:02 +02:00
parent a641e69455
commit 8b107cf1b3
5 changed files with 67 additions and 17 deletions
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76
crates/noxis/examples/dbg.rs
View file

@ -1,11 +1,38 @@
fn rd_u16(b: &[u8], p: &mut usize) -> u16 { let v = u16::from_be_bytes([b[*p], b[*p+1]]); *p += 2; v }
fn rd_u32(b: &[u8], p: &mut usize) -> u32 { let v = u32::from_be_bytes([b[*p], b[*p+1], b[*p+2], b[*p+3]]); *p += 4; v }
fn hex(b: &[u8]) -> String { b.iter().map(|x| format!("{x:02x}")).collect::<Vec<_>>().join(" ") }
//! Одноразовый отладочный обход байткода (scratch): ручной парсинг пула и
//! Code-атрибутов, вывод заголовков вложенных атрибутов.
#![allow(clippy::unwrap_used, clippy::expect_used)]
fn rd_u16(b: &[u8], p: &mut usize) -> u16 {
let v = u16::from_be_bytes([b[*p], b[*p + 1]]);
*p += 2;
v
}
fn rd_u32(b: &[u8], p: &mut usize) -> u32 {
let v = u32::from_be_bytes([b[*p], b[*p + 1], b[*p + 2], b[*p + 3]]);
*p += 4;
v
}
fn hex(b: &[u8]) -> String {
b.iter()
.map(|x| format!("{x:02x}"))
.collect::<Vec<_>>()
.join(" ")
}
fn main() {
let entries = noxis_jar::read_file(std::path::Path::new("/storage/project/jvm/LoReport/build/libs/lorep-1.1.0.jar")).unwrap();
let entries = noxis_jar::read_file(std::path::Path::new(
"/storage/project/jvm/LoReport/build/libs/lorep-1.1.0.jar",
))
.unwrap();
let program = noxis_jar::load(entries).unwrap();
let class = program.classes.iter().find(|c| c.this_class.ends_with("ReportStatsCommand")).unwrap();
let prog = noxis_classfile::Program { classes: vec![class.clone()], resources: vec![] };
let class = program
.classes
.iter()
.find(|c| c.this_class.ends_with("ReportStatsCommand"))
.unwrap();
let prog = noxis_classfile::Program {
classes: vec![class.clone()],
resources: vec![],
};
let out = noxis_jar::save(&prog).unwrap();
let entry = out.iter().find(|e| e.name.ends_with(".class")).unwrap();
let bytes = &entry.data;
@ -17,26 +44,45 @@ fn main() {
let mut utf8s: std::collections::BTreeMap<u16, String> = Default::default();
let mut idx = 1u16;
while idx < pool_count {
let tag = bytes[pos]; pos += 1;
let tag = bytes[pos];
pos += 1;
match tag {
1 => { let len = rd_u16(bytes, &mut pos) as usize; utf8s.insert(idx, String::from_utf8_lossy(&bytes[pos..pos+len]).into_owned()); pos += len; }
1 => {
let len = rd_u16(bytes, &mut pos) as usize;
utf8s.insert(
idx,
String::from_utf8_lossy(&bytes[pos..pos + len]).into_owned(),
);
pos += len;
}
3 | 4 => pos += 4,
5 | 6 => { pos += 8; idx += 1; }
5 | 6 => {
pos += 8;
idx += 1;
}
7 | 8 | 16 | 19 | 20 => pos += 2,
9 | 10 | 11 | 12 | 17 | 18 => pos += 4,
15 => pos += 3,
_ => { eprintln!("pool tag {tag}"); return; }
_ => {
eprintln!("pool tag {tag}");
return;
}
}
idx += 1;
}
let name_of = |i: u16| utf8s.get(&i).cloned().unwrap_or(format!("#{i}"));
pos += 6;
let ifaces = rd_u16(bytes, &mut pos); pos += 2 * ifaces as usize;
let ifaces = rd_u16(bytes, &mut pos);
pos += 2 * ifaces as usize;
let fields = rd_u16(bytes, &mut pos);
for _ in 0..fields {
pos += 6;
let n = rd_u16(bytes, &mut pos);
for _ in 0..n { pos += 2; let l = rd_u32(bytes, &mut pos); pos += l as usize; }
for _ in 0..n {
pos += 2;
let l = rd_u32(bytes, &mut pos);
pos += l as usize;
}
}
let methods = rd_u16(bytes, &mut pos);
for _ in 0..methods {
@ -60,7 +106,11 @@ fn main() {
for _ in 0..subn {
let sname = rd_u16(bytes, &mut pos);
let slen = rd_u32(bytes, &mut pos) as usize;
eprintln!("{mname}: sub={} len={slen} head=[{}]", name_of(sname), hex(&bytes[pos..pos+slen.min(24)]));
eprintln!(
"{mname}: sub={} len={slen} head=[{}]",
name_of(sname),
hex(&bytes[pos..pos + slen.min(24)])
);
pos += slen;
}
assert_eq!(pos, start + alen, "Code length mismatch in {mname}");