Authors often use figurative language in poetry to connect words and emphasize meaning. Which type of figurative language is being used in the poem below?

edgar allen poe the raven:
once upon a midnight dreary, while I pondered, weak and weary,
over many a quaint and curious volume of forgotten lore, ---
while I nodded, nearly napping, suddenly there came a tapping

simile
metaphor
hyperbole
alliteration