Function demangleSingleFunction

internal/symbolizer/symbolizer.go:284–316

(fn *profile.Function, opts []demangle.Option)

}

func demangleSingleFunction(fn *profile.Function, opts []demangle.Option) {
	if fn.Name != "" && fn.SystemName != fn.Name {
		return // Already demangled.
	}
	if demangled := demangle.Filter(fn.SystemName, opts...); demangled != fn.SystemName {
		fn.Name = demangled
		return
	}

	// OSX has all the symbols prefixed with extra '_' so lets try
	// once more without it
	if strings.HasPrefix(fn.SystemName, "_") {
		if demangled := demangle.Filter(fn.SystemName[1:], opts...); demangled != fn.SystemName[1:] {
			fn.Name = demangled
			return
		}
	}

	// Could not demangle. Apply heuristics in case the name is
	// already demangled.
	name := fn.SystemName
	if looksLikeDemangledCPlusPlus(name) {
		for _, o := range opts {
			switch o {
			case demangle.NoParams:
				name = removeMatching(name, '(', ')')
			case demangle.NoTemplateParams:
				name = removeMatching(name, '<', '>')
			}
		}
	}
	fn.Name = name
}

// looksLikeDemangledCPlusPlus is a heuristic to decide if a name is
// the result of demangling C++. If so, further heuristics will be