SourceFile Symbol Producing Incorrect Name on Linux

[mattt]

When running the swift-doc GitHub action on Sources/SwiftDoc, the resulting documentation for SourceFile has the name "Contextual.Symbol.Extension.CompilationCondition.SourceFile".

Contextual.Symbol.Extension.CompilationCondition.SourceFile

Running this locally on macOS, I'm unable to reproduce this behavior.

This long name is a consequence of the SourceFile declaration following declarations relating to the Contextual protocol.

swift-doc/Sources/SwiftDoc/SourceFile.swift

Lines 7 to 14 in da04436

	public protocol Contextual {}
	extension Symbol: Contextual {}
	extension Extension: Contextual {}
	extension CompilationCondition: Contextual {}
	// MARK: -
	public struct SourceFile: Hashable, Codable {

This should be handled by visitPost, which pops the stack of contexts after visiting a contextual node:

swift-doc/Sources/SwiftDoc/SourceFile.swift

Lines 188 to 190 in da04436

	mutating func visitPost(_ node: ExtensionDeclSyntax) {
	assert(pop() is Extension)
	}

However, these delegate methods don't appear to be called on Linux for some reason.

[mattt]

As we can see, this was fixed by #51.