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use crate::common::{DebugInfoOffset, SectionId};
use crate::endianity::Endianity;
use crate::read::lookup::{DebugLookup, LookupEntryIter, PubStuffEntry, PubStuffParser};
use crate::read::{EndianSlice, Reader, Result, Section, UnitOffset};
/// A single parsed pubname.
#[derive(Debug, Clone)]
pub struct PubNamesEntry<R: Reader> {
unit_header_offset: DebugInfoOffset<R::Offset>,
die_offset: UnitOffset<R::Offset>,
name: R,
}
impl<R: Reader> PubNamesEntry<R> {
/// Returns the name this entry refers to.
pub fn name(&self) -> &R {
&self.name
}
/// Returns the offset into the .debug_info section for the header of the compilation unit
/// which contains this name.
pub fn unit_header_offset(&self) -> DebugInfoOffset<R::Offset> {
self.unit_header_offset
}
/// Returns the offset into the compilation unit for the debugging information entry which
/// has this name.
pub fn die_offset(&self) -> UnitOffset<R::Offset> {
self.die_offset
}
}
impl<R: Reader> PubStuffEntry<R> for PubNamesEntry<R> {
fn new(
die_offset: UnitOffset<R::Offset>,
name: R,
unit_header_offset: DebugInfoOffset<R::Offset>,
) -> Self {
PubNamesEntry {
unit_header_offset,
die_offset,
name,
}
}
}
/// The `DebugPubNames` struct represents the DWARF public names information
/// found in the `.debug_pubnames` section.
#[derive(Debug, Clone)]
pub struct DebugPubNames<R: Reader>(DebugLookup<R, PubStuffParser<R, PubNamesEntry<R>>>);
impl<'input, Endian> DebugPubNames<EndianSlice<'input, Endian>>
where
Endian: Endianity,
{
/// Construct a new `DebugPubNames` instance from the data in the `.debug_pubnames`
/// section.
///
/// It is the caller's responsibility to read the `.debug_pubnames` section and
/// present it as a `&[u8]` slice. That means using some ELF loader on
/// Linux, a Mach-O loader on macOS, etc.
///
/// ```
/// use gimli::{DebugPubNames, LittleEndian};
///
/// # let buf = [];
/// # let read_debug_pubnames_section_somehow = || &buf;
/// let debug_pubnames =
/// DebugPubNames::new(read_debug_pubnames_section_somehow(), LittleEndian);
/// ```
pub fn new(debug_pubnames_section: &'input [u8], endian: Endian) -> Self {
Self::from(EndianSlice::new(debug_pubnames_section, endian))
}
}
impl<R: Reader> DebugPubNames<R> {
/// Iterate the pubnames in the `.debug_pubnames` section.
///
/// ```
/// use gimli::{DebugPubNames, EndianSlice, LittleEndian};
///
/// # let buf = [];
/// # let read_debug_pubnames_section_somehow = || &buf;
/// let debug_pubnames =
/// DebugPubNames::new(read_debug_pubnames_section_somehow(), LittleEndian);
///
/// let mut iter = debug_pubnames.items();
/// while let Some(pubname) = iter.next().unwrap() {
/// println!("pubname {} found!", pubname.name().to_string_lossy());
/// }
/// ```
pub fn items(&self) -> PubNamesEntryIter<R> {
PubNamesEntryIter(self.0.items())
}
}
impl<R: Reader> Section<R> for DebugPubNames<R> {
fn id() -> SectionId {
SectionId::DebugPubNames
}
fn reader(&self) -> &R {
self.0.reader()
}
}
impl<R: Reader> From<R> for DebugPubNames<R> {
fn from(debug_pubnames_section: R) -> Self {
DebugPubNames(DebugLookup::from(debug_pubnames_section))
}
}
/// An iterator over the pubnames from a `.debug_pubnames` section.
///
/// Can be [used with
/// `FallibleIterator`](./index.html#using-with-fallibleiterator).
#[derive(Debug, Clone)]
pub struct PubNamesEntryIter<R: Reader>(LookupEntryIter<R, PubStuffParser<R, PubNamesEntry<R>>>);
impl<R: Reader> PubNamesEntryIter<R> {
/// Advance the iterator and return the next pubname.
///
/// Returns the newly parsed pubname as `Ok(Some(pubname))`. Returns
/// `Ok(None)` when iteration is complete and all pubnames have already been
/// parsed and yielded. If an error occurs while parsing the next pubname,
/// then this error is returned as `Err(e)`, and all subsequent calls return
/// `Ok(None)`.
pub fn next(&mut self) -> Result<Option<PubNamesEntry<R>>> {
self.0.next()
}
}
#[cfg(feature = "fallible-iterator")]
impl<R: Reader> fallible_iterator::FallibleIterator for PubNamesEntryIter<R> {
type Item = PubNamesEntry<R>;
type Error = crate::read::Error;
fn next(&mut self) -> ::core::result::Result<Option<Self::Item>, Self::Error> {
self.0.next()
}
}
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