pub enum AssertExpression<'a> {
    I32(i32),
    I64(i64),
    F32(NanPattern<Float32>),
    F64(NanPattern<Float64>),
    V128(V128Pattern),
    RefNull(Option<HeapType<'a>>),
    RefExtern(u32),
    RefFunc(Option<Index<'a>>),
    LegacyArithmeticNaN,
    LegacyCanonicalNaN,
}
Expand description

An expression that is valid inside an assert_return directive.

As of https://github.com/WebAssembly/spec/pull/1104, spec tests may include assert_return directives that allow NaN patterns ("nan:canonical", "nan:arithmetic"). Parsing an AssertExpression means that:

  • only constant values (e.g. i32.const 4) are used in the assert_return directive
  • the NaN patterns are allowed (they are not allowed in regular Expressions).

Variants

I32(i32)

I64(i64)

F32(NanPattern<Float32>)

F64(NanPattern<Float64>)

V128(V128Pattern)

RefNull(Option<HeapType<'a>>)

RefExtern(u32)

RefFunc(Option<Index<'a>>)

LegacyArithmeticNaN

LegacyCanonicalNaN

Trait Implementations

Formats the value using the given formatter. Read more

Attempts to parse Self from parser, returning an error if it could not be parsed. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.