Struct CppNamespaceForwardScan 

pub struct CppNamespaceForwardScan { /* private fields */ }

The namespace forward declarations one tree’s prefix holds, folded in as the walk asks about them.

scope_for_recovered_exported_class asks the same question once per recovered class, and the answer depends only on the part of the tree that starts before the asking node. Rescanning that prefix per question is quadratic in the file, and a generated header whose parse recovery leaves thousands of class-like declarations at file scope pays all of it: 1,904 questions over 1.13 billion node visits on one 7.25 MB Vulkan header (#2754). This carries the scan forward instead. Each question advances the traversal from wherever the last one stopped to the asking node’s start byte, so a whole walk pays at most one pass over the prefix its furthest question reaches, and each question then costs a name lookup.

Trait Implementations

impl Default for CppNamespaceForwardScan

fn default() -> CppNamespaceForwardScan

Returns the “default value” for a type.