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#![allow(clippy::missing_errors_doc)]
use owo_colors::OwoColorize;
use regex::Regex;
pub use crate::asm::Item;
use crate::{
color,
demangle::{self, contents},
opts::Format,
};
use std::{
collections::BTreeMap,
fs::File,
io::{BufRead, BufReader},
path::Path,
};
#[derive(Debug)]
enum State {
Skipping,
Seeking,
Name,
Type,
Define,
}
pub fn dump_function(
goal: (&str, usize),
path: &Path,
fmt: &Format,
items: &mut Vec<Item>,
) -> anyhow::Result<bool> {
let mut seen = false;
let reader = BufReader::new(File::open(path)?);
let regex = Regex::new("@\"?(_?_[a-zA-Z0-9_$.]+)\"?\\(")?;
let mut state = State::Seeking;
let mut name = String::new();
let mut attrs = String::new();
let mut current_item = None::<Item>;
let mut names = BTreeMap::new();
for (ix, line) in reader.lines().enumerate() {
let line = line?;
println!("{line}");
match state {
State::Skipping => {
current_item = None;
if line.is_empty() {
state = State::Seeking;
}
}
State::Seeking => {
if let Some(name_str) = line.strip_prefix("; ") {
state = State::Name;
name = name_str.to_string();
} else {
state = State::Skipping;
}
}
State::Name => {
if line.starts_with("; Function Attrs: ") {
state = State::Type;
attrs = line;
} else {
state = State::Skipping;
}
}
State::Type => {
if line.starts_with("define ") {
state = State::Define;
if let Some(hashed) = regex
.captures(&line)
.and_then(|c| c.get(1))
.map(|c| c.as_str())
.and_then(demangle::demangled)
{
let hashed = format!("{hashed:?}");
let name_entry = names.entry(name.clone()).or_insert(0);
seen = (name.as_ref(), *name_entry) == goal || hashed == goal.0;
current_item = Some(Item {
name: name.clone(),
hashed,
index: *name_entry,
len: ix,
});
*name_entry += 1;
if seen {
println!("{}", color!(name, OwoColorize::cyan));
println!("{}", color!(attrs, OwoColorize::cyan));
println!("{}", contents(&line, fmt.full_name));
}
} else {
state = State::Skipping;
}
} else {
state = State::Skipping;
}
}
State::Define => {
if seen {
println!("{}", contents(&line, fmt.full_name));
}
if line == "}" {
if let Some(mut cur) = current_item.take() {
cur.len = ix - cur.len;
if goal.0.is_empty() || cur.name.contains(goal.0) {
items.push(cur);
}
}
if seen {
return Ok(true);
}
state = State::Skipping;
}
}
}
}
Ok(seen)
}
