Trait CompileVisitor 

pub trait CompileVisitor {
    // Provided methods
    fn register_meta(&mut self, _meta: MetaRef<'_>) -> Result<(), MetaError> { ... }
    fn visit_meta(
        &mut self,
        _location: &dyn Located,
        _meta: MetaRef<'_>,
    ) -> Result<(), MetaError> { ... }
    fn visit_variable_use(
        &mut self,
        _source_id: SourceId,
        _var_span: &dyn Spanned,
        _span: &dyn Spanned,
    ) -> Result<(), MetaError> { ... }
    fn visit_mod(&mut self, _location: &dyn Located) -> Result<(), MetaError> { ... }
    fn visit_doc_comment(
        &mut self,
        _location: &dyn Located,
        _item: &Item,
        _hash: Hash,
        _docstr: &str,
    ) -> Result<(), MetaError> { ... }
    fn visit_field_doc_comment(
        &mut self,
        _location: &dyn Located,
        _item: &Item,
        _hash: Hash,
        _field: &str,
        _docstr: &str,
    ) -> Result<(), MetaError> { ... }
}

A visitor that will be called for every language item compiled.

Provided Methods

fn register_meta(&mut self, _meta: MetaRef<'_>) -> Result<(), MetaError>

Called when a meta item is registered.

fn visit_meta( &mut self, _location: &dyn Located, _meta: MetaRef<'_>, ) -> Result<(), MetaError>

Mark that we’ve resolved a specific compile meta at the given location.

fn visit_variable_use( &mut self, _source_id: SourceId, _var_span: &dyn Spanned, _span: &dyn Spanned, ) -> Result<(), MetaError>

Visit a variable use.

fn visit_mod(&mut self, _location: &dyn Located) -> Result<(), MetaError>

Visit something that is a module.

fn visit_doc_comment( &mut self, _location: &dyn Located, _item: &Item, _hash: Hash, _docstr: &str, ) -> Result<(), MetaError>

Visit anterior ///-style comments, and interior //!-style doc comments for an item.

This may be called several times for a single item. Each attribute should eventually be combined for the full doc string.

This can be called in any order, before or after CompileVisitor::visit_meta for any given item.

fn visit_field_doc_comment( &mut self, _location: &dyn Located, _item: &Item, _hash: Hash, _field: &str, _docstr: &str, ) -> Result<(), MetaError>

Visit anterior ///-style comments, and interior //!-style doc comments for a field contained in a struct / enum variant struct.

This may be called several times for a single field. Each attribute should eventually be combined for the full doc string.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors