diff options
Diffstat (limited to 'vendor/gimli/src/write/abbrev.rs')
| -rw-r--r-- | vendor/gimli/src/write/abbrev.rs | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/vendor/gimli/src/write/abbrev.rs b/vendor/gimli/src/write/abbrev.rs deleted file mode 100644 index 7cdfa96..0000000 --- a/vendor/gimli/src/write/abbrev.rs +++ /dev/null @@ -1,188 +0,0 @@ -use alloc::vec::Vec; -use indexmap::IndexSet; -use std::ops::{Deref, DerefMut}; - -use crate::common::{DebugAbbrevOffset, SectionId}; -use crate::constants; -use crate::write::{Result, Section, Writer}; - -/// A table of abbreviations that will be stored in a `.debug_abbrev` section. -// Requirements: -// - values are `Abbreviation` -// - insertion returns an abbreviation code for use in writing a DIE -// - inserting a duplicate returns the code of the existing value -#[derive(Debug, Default)] -pub(crate) struct AbbreviationTable { - abbrevs: IndexSet<Abbreviation>, -} - -impl AbbreviationTable { - /// Add an abbreviation to the table and return its code. - pub fn add(&mut self, abbrev: Abbreviation) -> u64 { - let (code, _) = self.abbrevs.insert_full(abbrev); - // Code must be non-zero - (code + 1) as u64 - } - - /// Write the abbreviation table to the `.debug_abbrev` section. - pub fn write<W: Writer>(&self, w: &mut DebugAbbrev<W>) -> Result<()> { - for (code, abbrev) in self.abbrevs.iter().enumerate() { - w.write_uleb128((code + 1) as u64)?; - abbrev.write(w)?; - } - // Null abbreviation code - w.write_u8(0) - } -} - -/// An abbreviation describes the shape of a `DebuggingInformationEntry`'s type: -/// its tag type, whether it has children, and its set of attributes. -#[derive(Debug, Clone, PartialEq, Eq, Hash)] -pub(crate) struct Abbreviation { - tag: constants::DwTag, - has_children: bool, - attributes: Vec<AttributeSpecification>, -} - -impl Abbreviation { - /// Construct a new `Abbreviation`. - #[inline] - pub fn new( - tag: constants::DwTag, - has_children: bool, - attributes: Vec<AttributeSpecification>, - ) -> Abbreviation { - Abbreviation { - tag, - has_children, - attributes, - } - } - - /// Write the abbreviation to the `.debug_abbrev` section. - pub fn write<W: Writer>(&self, w: &mut DebugAbbrev<W>) -> Result<()> { - w.write_uleb128(self.tag.0.into())?; - w.write_u8(if self.has_children { - constants::DW_CHILDREN_yes.0 - } else { - constants::DW_CHILDREN_no.0 - })?; - for attr in &self.attributes { - attr.write(w)?; - } - // Null name and form - w.write_u8(0)?; - w.write_u8(0) - } -} - -/// The description of an attribute in an abbreviated type. -// TODO: support implicit const -#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] -pub(crate) struct AttributeSpecification { - name: constants::DwAt, - form: constants::DwForm, -} - -impl AttributeSpecification { - /// Construct a new `AttributeSpecification`. - #[inline] - pub fn new(name: constants::DwAt, form: constants::DwForm) -> AttributeSpecification { - AttributeSpecification { name, form } - } - - /// Write the attribute specification to the `.debug_abbrev` section. - #[inline] - pub fn write<W: Writer>(&self, w: &mut DebugAbbrev<W>) -> Result<()> { - w.write_uleb128(self.name.0.into())?; - w.write_uleb128(self.form.0.into()) - } -} - -define_section!( - DebugAbbrev, - DebugAbbrevOffset, - "A writable `.debug_abbrev` section." -); - -#[cfg(test)] -#[cfg(feature = "read")] -mod tests { - use super::*; - use crate::constants; - use crate::read; - use crate::write::EndianVec; - use crate::LittleEndian; - - #[test] - fn test_abbreviation_table() { - let mut abbrevs = AbbreviationTable::default(); - let abbrev1 = Abbreviation::new( - constants::DW_TAG_subprogram, - false, - vec![AttributeSpecification::new( - constants::DW_AT_name, - constants::DW_FORM_string, - )], - ); - let abbrev2 = Abbreviation::new( - constants::DW_TAG_compile_unit, - true, - vec![ - AttributeSpecification::new(constants::DW_AT_producer, constants::DW_FORM_strp), - AttributeSpecification::new(constants::DW_AT_language, constants::DW_FORM_data2), - ], - ); - let code1 = abbrevs.add(abbrev1.clone()); - assert_eq!(code1, 1); - let code2 = abbrevs.add(abbrev2.clone()); - assert_eq!(code2, 2); - assert_eq!(abbrevs.add(abbrev1.clone()), code1); - assert_eq!(abbrevs.add(abbrev2.clone()), code2); - - let mut debug_abbrev = DebugAbbrev::from(EndianVec::new(LittleEndian)); - let debug_abbrev_offset = debug_abbrev.offset(); - assert_eq!(debug_abbrev_offset, DebugAbbrevOffset(0)); - abbrevs.write(&mut debug_abbrev).unwrap(); - assert_eq!(debug_abbrev.offset(), DebugAbbrevOffset(17)); - - let read_debug_abbrev = read::DebugAbbrev::new(debug_abbrev.slice(), LittleEndian); - let read_abbrevs = read_debug_abbrev - .abbreviations(debug_abbrev_offset) - .unwrap(); - - let read_abbrev1 = read_abbrevs.get(code1).unwrap(); - assert_eq!(abbrev1.tag, read_abbrev1.tag()); - assert_eq!(abbrev1.has_children, read_abbrev1.has_children()); - assert_eq!(abbrev1.attributes.len(), read_abbrev1.attributes().len()); - assert_eq!( - abbrev1.attributes[0].name, - read_abbrev1.attributes()[0].name() - ); - assert_eq!( - abbrev1.attributes[0].form, - read_abbrev1.attributes()[0].form() - ); - - let read_abbrev2 = read_abbrevs.get(code2).unwrap(); - assert_eq!(abbrev2.tag, read_abbrev2.tag()); - assert_eq!(abbrev2.has_children, read_abbrev2.has_children()); - assert_eq!(abbrev2.attributes.len(), read_abbrev2.attributes().len()); - assert_eq!( - abbrev2.attributes[0].name, - read_abbrev2.attributes()[0].name() - ); - assert_eq!( - abbrev2.attributes[0].form, - read_abbrev2.attributes()[0].form() - ); - assert_eq!( - abbrev2.attributes[1].name, - read_abbrev2.attributes()[1].name() - ); - assert_eq!( - abbrev2.attributes[1].form, - read_abbrev2.attributes()[1].form() - ); - } -} |