I’m too lazy to code write now, but the above link says that when the word “all” is in a context like, “Deal all the cards,” it is an adjective. But in the context of, “All of them have left,” it is a pronoun.
If it is in the “All of” form, but followed by a non-countable and non-object noun (“All of my love” for example), is it an adjective or a pronoun?
It’s still a pronoun, isn’t it?
I give all of my love to you.
I (subject)
give (verb)
all (object)
of my love (prep. phrase modifying “all”)
to you (prop. phrase modifying “give”)
I say it’s an adjective, because it describes the amount of love you’re giving.
It’s a pronoun. The word “all” replaces “seven quarts” or “ten cubic centimeters” or however much love there is to be given. “Of my love” is a prepositional phrase modifying this pronoun.
If the sentence were, “All love is good,” then “all” would be an adjective telling how much love.
Would the word “last” used in the same way (like Last of The Red Hot Lovers) also be a pronoun? What would it be replacing?
That’s why I said that all is an adjective in that case. It just so happens that what it modifies is implicit.
all of can mean either “every one of” [a countable set] or “the whole of” [a non-countable thing]. In either of these two cases, all is considered to be a pronoun.
In addition to being a pronun or adjective, all can be[ul]
[li]an adverb (“he is all confused”)[/li][li]a noun (“he gave it his all”)[/ul][/li]
Not a pronoun, but a noun. “The last person or thing of a category, series, etc.”
Not a pronoun, but a noun. “The last person or thing of a category, series, etc.” **
[/QUOTE]
FROM ENCARTA:
Last
-
adjective pron
only remaining: the final or only person, thing, or part remaining (adj) This machine just ate my last dollar! (pron) Here - finish up the last of the cake.
That’s what you get for using Encarta. 
The SOED, American Heritage Dictionary, and http://www.m-w.com all call it a noun, and not a pronoun.