protopreparsevalidation

func Compile ¶

func Compile(root protoreflect.MessageDescriptor, fieldLimits map[protoreflect.FullName]int) (*Validator, error)

The returned Validator is stateful and must not be used concurrently.

Assumptions and Limitations:

• No recursive schemas: the compiler rejects cyclic message descriptor graphs.
• No map fields: map fields are rejected at compile time because their wire representation (repeated synthetic entry messages) would require special handling, and we don't use them in our schemas.
• No repeated packable scalars (except bool): packed encoding merges multiple values into a single length-delimited record, making wire-level element counting inaccurate. Rather than adding complexity, we forbid these field types.
• No field numbers above maxAllowedFieldNumber to keep memory footprint small.
• See also the comment on Validator.