Struct GrammarLoweringOptions 

pub struct GrammarLoweringOptions<'a> {
    pub emit: Option<GrammarEmitFn<'a>>,
    pub import: Option<GrammarImportFn<'a>>,
    pub accepts: &'a [String],
    pub rejects: &'a [String],
    pub edit_metadata: Option<&'a dyn Fn(&str) -> String>,
}

The emitter, importer, samples and metadata edit a lowering runs with.

Fields

emit: Option<GrammarEmitFn<'a>>

Replaces the target’s own emitter.

import: Option<GrammarImportFn<'a>>

Replaces the target’s own importer.

accepts: &'a [String]

Texts an exact lowering must accept.

rejects: &'a [String]

Texts an exact lowering must reject.

edit_metadata: Option<&'a dyn Fn(&str) -> String>

Rewrites the metadata before the reconstruction, for negative controls.

Trait Implementations

impl<'a> Clone for GrammarLoweringOptions<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for GrammarLoweringOptions<'a>

impl<'a> Default for GrammarLoweringOptions<'a>

fn default() -> GrammarLoweringOptions<'a>

Returns the “default value” for a type.