Function rustc_expand::mbe::macro_check::check_ops_is_prefix

pub(in mbe::macro_check) fn check_ops_is_prefix(
    sess: &ParseSess, 
    node_id: NodeId, 
    macros: &Stack<'_, MacroState<'_>>, 
    binders: &FxHashMap<MacroRulesNormalizedIdent, BinderInfo>, 
    ops: &Stack<'_, KleeneToken>, 
    span: Span, 
    name: MacroRulesNormalizedIdent
)

Checks that a meta-variable occurrence is valid.

Arguments:

• sess is used to emit diagnostics and lints
• node_id is used to emit lints
• macros is the stack of possible outer macros
• binders contains the binders of the associated LHS
• ops is the stack of Kleene operators from the RHS
• span is the span of the meta-variable to check
• name is the name of the meta-variable to check