fn mangle_functions(
    opt: &Opt,
    bcfile: &Path,
    names: &[impl AsRef<str>],
) -> CVResult<Vec<(String, String)>> {
    let names: HashSet<&str> = names.iter().map(AsRef::as_ref).collect();

    info_at!(
        &opt,
        Verbosity::Trivial,
        "    Looking up {:?} in {}",
        names,
        bcfile.to_string_lossy()
    );

    let (stdout, _) = Command::new(format!("llvm-nm-{}", opt.llvm_version))
        .arg("--defined-only")
        .arg(bcfile)
        .output_info(&opt, Verbosity::Trivial)?;

    let rs: Vec<(String, String)> = stdout
        .lines()
        .map(|l| l.split(" ").collect::<Vec<&str>>())
        .filter_map(|l| {
            if l.len() == 3
                && l[1].to_lowercase() == "t"
                && (l[2].starts_with("__ZN") || l[2].starts_with("_ZN"))
            {
                let mangled = if l[2].starts_with("__ZN") {
                    // on OSX, llvm-nm shows a double underscore prefix
                    &l[2][1..]
                } else {
                    &l[2]
                };
                // The alternative format ({:#}) is without the hash at the end.
                let dname = format!("{:#}", demangle(mangled));
                if names.contains(dname.as_str()) {
                    Some((dname, mangled.into()))
                } else {
                    None
                }
            } else {
                None
            }
        })
        .collect();

    info_at!(&opt, Verbosity::Trivial, "      Found {:?}", rs);

    // TODO: this doesn't look right:
    // missing = set(paths) - paths.keys()
    let missing = names.len() - rs.len();
    if missing > 0 {
        Err(format!("Unable to find {} tests in bytecode file", missing))?
    }
    Ok(rs)
}
/// Find a function defined in LLVM bitcode file.
/// Demangle all the function names, and compare tham to `names`.
Find a function defined in LLVM bitcode file.
Demangle all the function names, and compare tham to `names`.
Find a function defined in LLVM bitcode file . Demangle all the function names and compare tham to ` names ` .
fn mangle_functions(
    opt: &Opt,
    bcfile: &Path,
    names: &[impl AsRef<str>],
) -> CVResult<Vec<(String, String)>> {
    let names: HashSet<&str> = names.iter().map(AsRef::as_ref).collect();
    info_at!(
        &opt,
        Verbosity::Trivial,
        "    Looking up {:?} in {}",
        names,
        bcfile.to_string_lossy()
    );
    let (stdout, _) = Command::new(format!("llvm-nm-{}", opt.llvm_version))
        .arg("--defined-only")
        .arg(bcfile)
        .output_info(&opt, Verbosity::Trivial)?;
    let rs: Vec<(String, String)> = stdout
        .lines()
        .map(|l| l.split(" ").collect::<Vec<&str>>())
        .filter_map(|l| {
            if l.len() == 3
                && l[1].to_lowercase() == "t"
                && (l[2].starts_with("__ZN") || l[2].starts_with("_ZN"))
            {
                let mangled = if l[2].starts_with("__ZN") {
                    // on OSX, llvm-nm shows a double underscore prefix
                    &l[2][1..]
                } else {
                    &l[2]
                };
                // The alternative format ({:#}) is without the hash at the end.
                let dname = format!("{:#}", demangle(mangled));
                if names.contains(dname.as_str()) {
                    Some((dname, mangled.into()))
                } else {
                    None
                }
            } else {
                None
            }
        })
        .collect();
    info_at!(&opt, Verbosity::Trivial, "      Found {:?}", rs);
    // TODO: this doesn't look right:
    // missing = set(paths) - paths.keys()
    let missing = names.len() - rs.len();
    if missing > 0 {
        Err(format!("Unable to find {} tests in bytecode file", missing))?
    }
    Ok(rs)
}
fn mangle_functions ( opt : & Opt , bcfile : & Path , names : & [ impl AsRef < str > ] , ) -> CVResult < Vec < ( String , String ) > > { let names : HashSet < & str > = names . iter ( ) . map ( AsRef :: as_ref ) . collect ( ) ; info_at ! ( opt Verbosity Trivial " " names bcfile to_string_lossy ( ) ) ; let ( stdout , _ ) = Command :: new ( format ! ( " " opt llvm_version ) ) . arg ( " " ) . arg ( bcfile ) . output_info ( & opt , Verbosity :: Trivial ) ? ; let rs : Vec < ( String , String ) > = stdout . lines ( ) . map ( | l | l . split ( " " ) . collect :: < Vec < & str > > ( ) ) . filter_map ( | l | { if l . len ( ) == 3 && l [ 1 ] . to_lowercase ( ) == " " && ( l [ 2 ] . starts_with ( " " ) || l [ 2 ] . starts_with ( " " ) ) { let mangled = if l [ 2 ] . starts_with ( " " ) { // on OSX, llvm-nm shows a double underscore prefix & l [ 2 ] [ 1 .. ] } else { & l [ 2 ] } ; // The alternative format ({:#}) is without the hash at the end. let dname = format ! ( " " demangle ( mangled ) ) ; if names . contains ( dname . as_str ( ) ) { Some ( ( dname , mangled . into ( ) ) ) } else { None } } else { None } } ) . collect ( ) ; info_at ! ( opt Verbosity Trivial " " rs ) ; // TODO: this doesn't look right: // missing = set(paths) - paths.keys() let missing = names . len ( ) - rs . len ( ) ; if missing > 0 { Err ( format ! ( " " missing ) ) ? } Ok ( rs ) }
Find a function defined in LLVM bitcode file.
Find a function defined in LLVM bitcode file .
opt
&Opt
bcfile
&Path
names
&[impl AsRef<str>]
opt
&Opt
bcfile
&Path
names
&[impl AsRef<str>]