{ "crate": "rustc_ast", "module": "ast::Expr::precedence", "usages": [ { "symbol": "None", "kind": "enum_variant_usage", "usage_count": 1, "usage_type": "EnumVariant", "node_type": "Item", "user_def_id": "DefId(0:308 ~ rustc_ast[4394]::ast::{impl#30}::precedence::prefix_attrs_precedence)", "used_def_id": "DefId(2:49374 ~ core[4720]::option::Option::None)", "user_crate": "rustc_ast", "used_crate": "core" }, { "symbol": "Some", "kind": "enum_variant_usage", "usage_count": 1, "usage_type": "EnumVariant", "node_type": "Item", "user_def_id": "DefId(0:308 ~ rustc_ast[4394]::ast::{impl#30}::precedence::prefix_attrs_precedence)", "used_def_id": "DefId(2:49376 ~ core[4720]::option::Option::Some)", "user_crate": "rustc_ast", "used_crate": "core" }, { "symbol": "next", "kind": "method_call", "usage_count": 1, "usage_type": "MethodCall", "node_type": "Item", "user_def_id": "DefId(0:308 ~ rustc_ast[4394]::ast::{impl#30}::precedence::prefix_attrs_precedence)", "used_def_id": "DefId(2:9429 ~ core[4720]::iter::traits::iterator::Iterator::next)", "user_crate": "rustc_ast", "used_crate": "core" }, { "symbol": "into_iter", "kind": "method_call", "usage_count": 1, "usage_type": "MethodCall", "node_type": "Item", "user_def_id": "DefId(0:308 ~ rustc_ast[4394]::ast::{impl#30}::precedence::prefix_attrs_precedence)", "used_def_id": "DefId(2:9297 ~ core[4720]::iter::traits::collect::IntoIterator::into_iter)", "user_crate": "rustc_ast", "used_crate": "core" } ] }