Struct wasmtime_environ::wasmparser::GlobalSectionReader

pub struct GlobalSectionReader<'a> { /* private fields */ }

A reader for the global section of a WebAssembly module.

Implementations

impl<'a> GlobalSectionReader<'a>

pub fn new( data: &'a [u8], offset: usize ) -> Result<GlobalSectionReader<'a>, BinaryReaderError>

Constructs a new GlobalSectionReader for the given data and offset.

pub fn original_position(&self) -> usize

Gets the original position of the section reader.

pub fn get_count(&self) -> u32

Gets the count of items in the section.

pub fn read<'b>(&mut self) -> Result<Global<'b>, BinaryReaderError>where 'a: 'b,

Reads content of the global section.

Examples

use wasmparser::GlobalSectionReader;
let mut global_reader = GlobalSectionReader::new(data, 0).unwrap();
for _ in 0..global_reader.get_count() {
    let global = global_reader.read().expect("global");
    println!("Global: {:?}", global);
    let mut init_expr_reader = global.init_expr.get_binary_reader();
    let op = init_expr_reader.read_operator().expect("op");
    println!("Init const: {:?}", op);
}

Trait Implementations

impl<'a> Clone for GlobalSectionReader<'a>

fn clone(&self) -> GlobalSectionReader<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> IntoIterator for GlobalSectionReader<'a>

type Item = Result<Global<'a>, BinaryReaderError>

The type of the elements being iterated over.

type IntoIter = SectionIteratorLimited<GlobalSectionReader<'a>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <GlobalSectionReader<'a> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<'a> SectionReader for GlobalSectionReader<'a>

type Item = Global<'a>

The item returned by the reader.

fn read( &mut self ) -> Result<<GlobalSectionReader<'a> as SectionReader>::Item, BinaryReaderError>

Reads an item from the section.

fn eof(&self) -> bool

Determines if the reader is at end-of-section.

fn original_position(&self) -> usize

Gets the original position of the reader.

fn range(&self) -> Range<usize>

Gets the range of the reader.

fn ensure_end(&self) -> Result<(), BinaryReaderError>

Ensures the reader is at the end of the section.

impl<'a> SectionWithLimitedItems for GlobalSectionReader<'a>

fn get_count(&self) -> u32

Gets the count of the items in the section.