Struct wasmparser::OperatorsReader

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pub struct OperatorsReader<'a> { /* private fields */ }
Expand description

A reader for a core WebAssembly function’s operators.

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impl<'a> OperatorsReader<'a>

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pub fn eof(&self) -> bool

Determines if the reader is at the end of the operators.

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pub fn original_position(&self) -> usize

Gets the original position of the reader.

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pub fn allow_memarg64(&mut self, allow: bool)

Whether or not to allow 64-bit memory arguments in the the operators being read.

This is intended to be true when support for the memory64 WebAssembly proposal is also enabled.

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pub fn ensure_end(&self) -> Result<()>

Ensures the reader is at the end.

This function returns an error if there is extra data after the operators.

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pub fn read(&mut self) -> Result<Operator<'a>>

Reads an operator from the reader.

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pub fn into_iter_with_offsets(self) -> OperatorsIteratorWithOffsets<'a>

Converts to an iterator of operators paired with offsets.

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pub fn read_with_offset(&mut self) -> Result<(Operator<'a>, usize)>

Reads an operator with its offset.

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pub fn visit_operator<T>( &mut self, visitor: &mut T, ) -> Result<<T as VisitOperator<'a>>::Output>
where T: VisitOperator<'a>,

Visit a single operator with the specified VisitOperator instance.

See BinaryReader::visit_operator for more information.

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pub fn get_binary_reader(&self) -> BinaryReader<'a>

Gets a binary reader from this operators reader.

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impl<'a> Clone for OperatorsReader<'a>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> IntoIterator for OperatorsReader<'a>

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fn into_iter(self) -> Self::IntoIter

Reads content of the code section.

§Examples
use wasmparser::{Operator, CodeSectionReader, Result};
let code_reader = CodeSectionReader::new(data, 0).unwrap();
for body in code_reader {
    let body = body.expect("function body");
    let mut op_reader = body.get_operators_reader().expect("op reader");
    let ops = op_reader.into_iter().collect::<Result<Vec<Operator>>>().expect("ops");
    assert!(
        if let [Operator::Nop, Operator::End] = ops.as_slice() { true } else { false },
        "found {:?}",
        ops
    );
}
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type Item = Result<Operator<'a>, BinaryReaderError>

The type of the elements being iterated over.
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type IntoIter = OperatorsIterator<'a>

Which kind of iterator are we turning this into?

Auto Trait Implementations§

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impl<'a> Freeze for OperatorsReader<'a>

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impl<'a> RefUnwindSafe for OperatorsReader<'a>

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impl<'a> Send for OperatorsReader<'a>

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impl<'a> Sync for OperatorsReader<'a>

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impl<'a> Unpin for OperatorsReader<'a>

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impl<'a> UnwindSafe for OperatorsReader<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.