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use super::{
BinaryReader, ExternalKind, Result, SectionIteratorLimited, SectionReader,
SectionWithLimitedItems,
};
#[derive(Debug, Copy, Clone)]
pub struct Export<'a> {
pub field: &'a str,
pub kind: ExternalKind,
pub index: u32,
}
pub struct ExportSectionReader<'a> {
reader: BinaryReader<'a>,
count: u32,
}
impl<'a> ExportSectionReader<'a> {
pub fn new(data: &'a [u8], offset: usize) -> Result<ExportSectionReader<'a>> {
let mut reader = BinaryReader::new_with_offset(data, offset);
let count = reader.read_var_u32()?;
Ok(ExportSectionReader { reader, count })
}
pub fn original_position(&self) -> usize {
self.reader.original_position()
}
pub fn get_count(&self) -> u32 {
self.count
}
pub fn read<'b>(&mut self) -> Result<Export<'b>>
where
'a: 'b,
{
let field = self.reader.read_string()?;
let kind = self.reader.read_external_kind()?;
let index = self.reader.read_var_u32()?;
Ok(Export { field, kind, index })
}
}
impl<'a> SectionReader for ExportSectionReader<'a> {
type Item = Export<'a>;
fn read(&mut self) -> Result<Self::Item> {
ExportSectionReader::read(self)
}
fn eof(&self) -> bool {
self.reader.eof()
}
fn original_position(&self) -> usize {
ExportSectionReader::original_position(self)
}
}
impl<'a> SectionWithLimitedItems for ExportSectionReader<'a> {
fn get_count(&self) -> u32 {
ExportSectionReader::get_count(self)
}
}
impl<'a> IntoIterator for ExportSectionReader<'a> {
type Item = Result<Export<'a>>;
type IntoIter = SectionIteratorLimited<ExportSectionReader<'a>>;
fn into_iter(self) -> Self::IntoIter {
SectionIteratorLimited::new(self)
}
}