Method MethodValue

types/methods.go:23–39

MethodValue returns the Function implementing method sel, building wrapper methods on demand. It returns nil if sel denotes an abstract (interface) method. Precondition: sel.Kind() == MethodVal. Thread-safe. EXCLUSIVE_LOCKS_ACQUIRED(prog.methodsMu)

(sel *Selection)

// EXCLUSIVE_LOCKS_ACQUIRED(prog.methodsMu)
//
func (prog *Program) MethodValue(sel *Selection) *Function {
	if sel.Kind() != MethodVal {
		panic(fmt.Sprintf("MethodValue(%s) kind != MethodVal", sel))
	}
	T := sel.Recv()
	if isInterface(T) {
		return nil // abstract method
	}
	if prog.mode&LogSource != 0 {
		defer logStack("MethodValue %s %v", T, sel)()
	}

	prog.methodsMu.Lock()
	defer prog.methodsMu.Unlock()

	return prog.addMethod(prog.createMethodSet(T), sel)
}

// LookupMethod returns the implementation of the method of type T
// identified by (pkg, name).  It returns nil if the method exists but