Module fidelity 

Per-format capability profiles for grammar round-trip fidelity.

Each supported grammar notation exposes a LanguageProfile over the grammar IR construct vocabulary. Constructs are classified as lossless or equivalent when the target notation represents them without a documented lossy fallback, and lossy when the emitter must degrade, synthesize helper productions, drop metadata, or reject the construct with an explicit unsupported-construct error.

Structs

GrammarFormatProfile

Capability profile for one grammar notation.

Enums

GrammarFidelityLevel

Round-trip fidelity level for one construct in one grammar format.

Constants

GRAMMAR_CONSTRUCTS

The grammar IR construct vocabulary classified by the fidelity matrix.

GRAMMAR_FORMATS

Grammar formats with a fidelity profile.

Functions

canonical_grammar_format

Canonicalizes a grammar format label to one of GRAMMAR_FORMATS.

grammar_format_profile

Returns the capability profile for a grammar format, or None when the format has no fidelity row yet.