Struct ParserOptions 

#[non_exhaustive]
pub struct ParserOptions {
    pub validation: bool,
    pub optimize: bool,
    pub deduplicate_operands: bool,
    pub threads: Option<usize>,
}

Parser optimization and lowering options.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

validation: bool

Whether to validate modules while parsing. Enabled by default when the validate feature is enabled.

Requires the validate feature to have any effect.

Disable this only for trusted input. Parsing without validation may produce a module that violates runtime assumptions.

optimize: bool

Whether to enable some of the optimizations during lowering, such as bounded instruction selection.

deduplicate_operands: bool

Whether to deduplicate immutable function operands while parsing.

threads: Option<usize>

Number of threads to use for parallel parsing.

Requires the parallel feature. Ignored when the feature is disabled.

• None: auto-detect based on available parallelism
• Some(1): force single-threaded
• Some(n): use up to n workers

Implementations

impl ParserOptions

pub fn new() -> Self

Create parser options with default settings.

pub const fn with_validation(self, enabled: bool) -> Self

Enable or disable WebAssembly validation.

Requires the validate feature to have any effect.

Disable this only for trusted input. Parsing without validation may produce a module that violates runtime assumptions.

pub const fn validation(&self) -> bool

Returns whether WebAssembly validation is enabled.

pub const fn with_optimize(self, enabled: bool) -> Self

Enable or disable some of the optimizations during lowering, such as bounded instruction selection.

pub const fn optimize(&self) -> bool

Returns whether some of the optimizations during lowering, such as bounded instruction selection, are enabled.

pub const fn with_operand_deduplication(self, enabled: bool) -> Self

Enable or disable parse-time deduplication of immutable function operands.

pub const fn deduplicate_operands(&self) -> bool

Returns whether immutable function operands are deduplicated while parsing.

pub const fn with_threads(self, threads: usize) -> Self

Set the number of threads for parallel parsing.

Requires the parallel feature to have any effect.

pub const fn threads(&self) -> Option<usize>

Returns the configured parser thread count, or None for auto-detect.

Trait Implementations

impl Clone for ParserOptions

fn clone(&self) -> ParserOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParserOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ParserOptions

fn default() -> Self

Returns the “default value” for a type.